PIMCO FUNDS MULTI MANAGER SERIES
497, 1999-04-05
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<PAGE>
 
                            PIMCO Funds Prospectus



Multi-Manager
Series
    
April 1, 1999      
Share Class

D
    
- -------------------------------
BLEND STOCK FUNDS
Capital Appreciation Fund
Mid-Cap Growth Fund

- -------------------------------
VALUE STOCK FUNDS
Equity Income Fund
Renaissance Fund
Value Fund

- -------------------------------
ENHANCED INDEX STOCK FUNDS
Tax-Efficient Equity Fund

- -------------------------------
SECTOR-RELATED STOCK FUNDS
Innovation Fund      


                                                            PIMCO Funds
                                                            -----------------
                                                                       FUNDS
<PAGE>

 

            PIMCO Funds: Multi-Manager Series
            Prospectus
               
            April 1, 1999     
 
            PIMCO Funds: Multi-Manager Series (the "Trust") is an open-end se-
            ries management investment company offering seven separate diver-
            sified investment portfolios (each a "Fund") in this Prospectus,
            each with different investment objectives and strategies. The ad-
            dress of PIMCO Funds: Multi-Manager Series is 840 Newport Center
            Drive, Suite 300, Newport Beach, CA 92660.
 
            Each Fund offers Class D shares in this Prospectus. Through sepa-
            rate prospectuses, certain Funds and other series of the Trust of-
            fer up to five additional classes of shares, Class A, Class B,
            Class C, Institutional Class and Administrative Class shares. See
            "Description of the Trust--Multiple Classes of Shares."
 
            This Prospectus concisely describes the information investors
            should know before investing in Class D shares of the Funds.
            Please read this Prospectus carefully and keep it for further ref-
            erence. Information about the investment objective of each Fund,
            along with a detailed description of the types of securities in
            which each Fund may invest, and of investment policies and re-
            strictions applicable to each Fund, are set forth in this Prospec-
            tus. There can be no assurance that the investment objective of
            any Fund will be achieved. Because the market value of each Fund's
            investments will change, the investment returns and net asset
            value per share of each Fund will vary.
 
            Class D shares are offered only through financial service firms,
            such as broker-dealers or registered investment advisers, with
            which the Funds' distributor has an agreement for the use of the
            Funds in particular investment products, programs or accounts for
            which a fee may be charged. See "How to Buy Shares." If you wish
            to purchase shares directly from the Trust or the Funds' distribu-
            tor, please consider one of the other classes of shares. See "De-
            scription of the Trust--Multiple Classes of Shares."
               
            A Statement of Additional Information, dated April 1, 1999, as
            amended or supplemented from time to time, is available free of
            charge by writing to PIMCO Funds Distributors LLC (the "Distribu-
            tor"), 2187 Atlantic Street, Stamford, Connecticut 06902, or by
            telephoning 1-888-87-PIMCO. The Statement of Additional Informa-
            tion, which contains more detailed information about the Trust,
            has been filed with the Securities and Exchange Commission and is
            incorporated by reference in this Prospectus. The Securities and
            Exchange Commission maintains an Internet World Wide Web site (at
            www.sec.gov) which contains the Statement of Additional Informa-
            tion, materials that are incorporated by reference into this Pro-
            spectus and the Statement of Additional Information, and other in-
            formation about the Funds.     
 
            These securities have not been approved or disapproved by the Se-
            curities and Exchange Commission or any state securities commis-
            sion, nor has the Securities and Exchange Commission or any state
            securities commission passed upon the accuracy or adequacy of this
            Prospectus. Any representation to the contrary is a criminal of-
            fense.
 
            Shares of the Funds are not deposits or obligations of, or guaran-
            teed or endorsed by, any financial institution, and the shares are
            not federally insured by the Federal Deposit Insurance Corpora-
            tion, the Federal Reserve Board or any other agency, and involve
            risk, including the possible loss of principal.
 
 
 
              TABLE OF CONTENTS
 
<TABLE>    
<S>                                                  <C> 
PIMCO Funds Overview..................................3
Schedule of Fees......................................4
Financial Highlights..................................6
Investment Objectives and Policies....................8
Characteristics and Risks of Securities
 and Investment Techniques...........................11
Performance Information..............................22
How to Buy Shares....................................23
Exchange Privilege...................................24
How to Redeem........................................25
Distributor..........................................25
How Net Asset Value Is Determined....................26
Distributions........................................26
Taxes................................................27
Management of the Trust..............................28
Description of the Trust.............................33
</TABLE>    
 
 
2    PIMCO Funds: Multi-Manager Series

<PAGE>
 

            PIMCO Funds Overview
 
            PIMCO Funds offers unique access to the investment expertise of
            PIMCO Advisors L.P. ("PIMCO Advisors" or the "Adviser"). As of De-
            cember 31, 1998, PIMCO Advisors managed over $240 billion in as-
            sets, including assets for 46 of the largest 100 U.S. corpora-
            tions. PIMCO Advisors' institutional heritage is reflected in the
            PIMCO Funds, each of which attempts to achieve its investment ob-
            jective using a specific investment style. The table below com-
            pares certain investment characteristics of the Funds. Other im-
            portant characteristics of the Funds are described under "Invest-
            ment Objectives and Policies."
 
 
<TABLE>   
<CAPTION>
                                                                                                 Individual
Fund                                        Investment                                            Portfolio
Profiles                  Fund Name        Objective             Primary Investments (/1/)       Manager(s) (/2/)
           ---------------------------------------------------------------------------------------------------------
<C>        <C>            <C>              <C>                   <S>                             <C>
           Blend Stock    Capital          Growth of capital     Common stocks of companies      David B. Breed,
           Funds          Appreciation                           with market                     William B. Bannick,
                                                                 capitalizations of at           Katherine A. Burdon
                                                                 least $1 billion that have      and
                                                                 improving fundamentals and      Peter B. McManus
                                                                 whose stock is reasonably      
                                                                 valued by the market           
                          ------------------------------------------------------------------------------------------
                          Mid-Cap          Growth of capital     Common stocks of companies      David B. Breed,
                          Growth                                 with market                     William B. Bannick,
                                                                 capitalizations in excess       Katherine A. Burdon
                                                                 of $500 million that have       and
                                                                 improving fundamentals and      Peter B. McManus
                                                                 whose stock is reasonably      
                                                                 valued by the market           
           ---------------------------------------------------------------------------------------------------------
           Value Stock    Equity           Current income as a   Common stocks with below-       Chris Najork and
           Funds          Income           primary objective;    average price to earnings       Benjamin Fischer
                                           long-term growth of   ratios and higher dividend     
                                           capital as a          yields relative to their       
                                           secondary objective   industry groups                
                          ------------------------------------------------------------------------------------------
                          Renaissance      Long-term growth of   Common stocks with below-       Clifford G.
                                           capital and income    average valuations that         Fox (/3/)
                                                                 have improving business        
                                                                 fundamentals                   
                          ------------------------------------------------------------------------------------------
                          Value            Long-term growth of   Common stocks with below-       Chris Najork,
                                           capital and income    average price to earnings       Benjamin Fischer
                                                                 ratios relative to their        and Paul A.
                                                                 industry groups                 Magnuson
           ---------------------------------------------------------------------------------------------------------
           Enhanced       Tax-Efficient    Maximum after-tax     A broadly diversified           David Stein, Tom
           Index Stock    Equity           growth of capital     portfolio of at least 200       Seto and
           Funds                                                 common stocks of companies      Cliff Quisenberry
                                                                 with larger                    
                                                                 market capitalizations         
           ---------------------------------------------------------------------------------------------------------
           Sector-        Innovation       Capital               Common Stocks of companies      Dennis P. McKechnie
           Related                         appreciation; no      with small, medium and         
           Stock Funds                     consideration given   large market                   
                                           to income             capitalizations                
                                                                 (technology-related            
                                                                 stocks)                        
</TABLE>    
 
            1. For specific information concerning the market capitalizations
            of companies in which each Fund may invest and each Fund's invest-
            ment style, see "Investment Objectives and Policies" in this Pro-
            spectus.
               
            2. This column lists the individual(s) who have or share primary
            responsibility for the day-to-day portfolio management of the
            noted Funds. PIMCO Advisors has retained a separate firm (each a
            "Sub-Adviser") to manage the investments of each Fund, except that
            the PIMCO Equity Advisors division ("PIMCO Equity Advisors") of
            PIMCO Advisors manages the investments of the Innovation Fund
            (acting in this capacity, PIMCO Equity Advisors is also referred
            to as a "Sub-Adviser"). The Individual Portfolio Managers are as-
            sociated with the following Sub-Advisers: Mr. McKechnie is with
            PIMCO Equity Advisors; Messrs. Breed, Bannick and McManus and Ms.
            Burdon are with Cadence Capital Management ("Cadence"); Mr. Fox is
            with Columbus Circle Investors ("Columbus Circle"); Messrs Najork,
            Fischer and Magnuson are with NFJ Investment Group ("NFJ"); and
            Messrs. Stein, Seto and Quisenberry are with Parametric Portfolio
            Associates ("Parametric").See "Management of the Trust."     
            3. On or about May 7, 1999, PIMCO Equity Advisors will assume full
            portfolio management responsibility for the Renaissance Fund. See
            "Management of the Trust--Sub-Advisers--Columbus Circle."

                                                                  Prospectus  3
<PAGE>
 

            Schedule of Fees
 
 
<TABLE>
<CAPTION>
             All Funds--Class D Shares
             -------------------------------------------------------------------
             <S>                                                        <C>
Shareholder  Maximum initial sales charge imposed on purchases
Transaction  (as a percentage of offering price at time of purchase)   None
Expenses     -------------------------------------------------------------------
             Maximum sales charge imposed on reinvested dividends
             (as a percentage of net asset value at time of purchase)  None
             -------------------------------------------------------------------
             Maximum deferred sales charge
             (as a percentage of original purchase price)              None
             -------------------------------------------------------------------
             Exchange Fee                                               None
</TABLE>
 
<TABLE>   
<CAPTION>
 
                                                                        Example: You would pay the
                                                                        following expenses on a $1,000
                                                                        investment assuming (1) 5%
                                 Annual Fund Operating Expenses         annual return and (2) with or
                                 (As a percentage of average net        without redemption at the end
                                 assets):                               of each time period:
                                                              Total
                                          Admini-   12b-1     Fund
                                 Advisory strative  (Service) Operating Year
           Fund                  Fees     Fees(/1/) Fees(/1/) Expenses  1        3       5       10
           ----------------------------------------------------------------------------------------------
           <S>                   <C>      <C>       <C>       <C>       <C>      <C>     <C>     <C>
           Capital Appreciation  .45%     .40%      .25%      1.10%         $11      $35     $61     $134
           ----------------------------------------------------------------------------------------------
           Mid-Cap Growth        .45      .40       .25       1.10           11       35      61      134
           ----------------------------------------------------------------------------------------------
           Equity Income         .45      .40       .25       1.10           11       35      61      134
           ----------------------------------------------------------------------------------------------
           Renaissance           .60      .40       .25       1.25           13       40      69      151
           ----------------------------------------------------------------------------------------------
           Value                 .45      .40       .25       1.10           11       35      61      134
           ----------------------------------------------------------------------------------------------
           Tax-Efficient Equity  .45      .40       .25       1.10           11       35      61      134
           ----------------------------------------------------------------------------------------------
           Innovation            .65      .40       .25       1.30           13       41      71      157
</TABLE>    
 
            1. The Funds' administration agreement includes a plan for Class D
            shares that has been adopted in conformity with the requirements
            set forth in Rule 12b-1 under the Investment Company Act of 1940.
            The plan provides that up to .25% per annum of the total fees paid
            under the administration agreement may represent reimbursement for
            expenses in respect of activities ("subject activities") that may
            be deemed to be primarily intended to result in the sale of Class
            D shares. Each Fund will pay a total of .65% per annum under the
            administration agreement regardless of whether a portion or none
            of the .25% authorized under the plan is paid for subject servic-
            es. To the extent that any payments are deemed to be made pursuant
            to the plan, the Funds intend to treat such payments as "service
            fees" for purposes of applicable rules of the National Association
            of Securities Dealers, Inc. (the "NASD"). See "Management of the
            Trust--Fund Administrator." To the extent that such payments for
            subject activities are deemed not to be "service fees," Class D
            shareholders may, depending on the length of time the shares are
            held, pay more than the economic equivalent of the maximum front-
            end sales charges permitted by relevant rules of the NASD.
 
            The purpose of the foregoing tables is to assist investors in un-
            derstanding the various costs and expenses of the Trust that are
            borne directly or indirectly by Class D shareholders of the Funds.
            The information is based upon each Fund's current fees and ex-
            penses.
 
            NOTE: The figures shown in the Example are entirely hypothetical.
            They are not representations of past or future performance or ex-
            penses; actual performance and/or expenses may be more or less
            than shown.
 

4     PIMCO Funds: Multi-Manager Series 
<PAGE>
 

 
 
 
                      (This page left blank intentionally)
 
 
 
                                                               
                                                            Prospectus         5
<PAGE>
 
Financial Highlights
   
The financial highlights set forth on the following pages present certain in-
formation and ratios as well as performance information for Class D shares of
the Funds that were operational during the periods listed. Certain information
provided below for periods through June 30, 1998 is included in the June 30,
1998 PIMCO Funds Annual Report (relating to Class D shares) and has been au-
dited by PricewaterhouseCoopers LLP, independent accountants, whose report
thereon is also included in such Annual Report. Information for the periods
ended December 31, 1998 is included in the December 31, 1998 PIMCO Funds Semi-
Annual Report (relating to Class D shares) and is unaudited. The Annual Report
and Semi-Annual Report are incorporated by reference in the Statement of Addi-
tional Information and may be obtained without charge from the Distributor. Fi-
nancial Statements and related notes are also incorporated by reference in the
Statement of Additional Information.     
 
<TABLE>   
<CAPTION>
                                                     Net Realized/                   Dividends  Dividends in  Distributions
Selected Per         Net Asset Value Net             Unrealized      Total Income    From Net   Excess of Net From Net
Class D Share        Beginning       Investment      Gain (Loss) on  From Investment Investment Investment    Realized Capital
Data for the         of Period       Income (Loss)   Investments     Operations      Income     Income        Gains
Period Ended:        --------------- -------------   --------------  --------------- ---------- ------------- ----------------
<S>                  <C>             <C>             <C>             <C>             <C>        <C>           <C>
Capital
 Appreciation
 Fund
 12/31/98 +             $  26.01       $   0.04 (a)     $   0.53 (a)    $   0.57      $  (0.13)   $   0.00        $  (1.65)
 04/08/98-
  06/30/98                 25.41           0.02 (a)         0.58 (a)        0.60          0.00        0.00            0.00
Mid-Cap Growth
 Fund
 12/31/98 +             $  23.99       $   0.01 (a)     $   0.13 (a)    $   0.14      $  (0.01)   $   0.00        $  (1.07)
 04/08/98-
  06/30/98                 23.97           0.00 (a)         0.02 (a)        0.02          0.00        0.00            0.00
Equity Income
 Fund
 12/31/98 +             $  16.04       $   0.18 (a)     $  (0.01)(a)    $   0.17      $  (0.18)   $   0.00        $  (1.76)
 04/08/98-
  06/30/98                 16.71           0.09 (a)        (0.66)(a)       (0.57)        (0.10)       0.00            0.00
Renaissance Fund
 12/31/98 +             $  19.10       $   0.01 (a)     $  (0.39)(a)    $  (0.38)     $   0.00    $   0.00        $  (2.33)
 04/08/98-
  06/30/98                 18.99           0.01 (a)         0.10 (a)        0.11          0.00        0.00            0.00
Value Fund
 12/31/98 +             $  15.64       $   0.11 (a)     $   0.06 (a)    $   0.17      $  (0.10)   $   0.00        $  (1.72)
 04/08/98-
  06/30/98                 15.99           0.04 (a)        (0.34)(a)       (0.30)        (0.05)       0.00            0.00
Tax-Efficient
 Equity Fund
 09/30/98-12/31/98 +    $  10.00       $   0.02 (a)     $   0.51 (a)    $   0.53      $   0.00    $   0.00        $   0.00
Innovation Fund
 12/31/98 +             $  24.28       $  (0.12)(a)     $   7.52 (a)    $   7.40      $   0.00    $   0.00        $  (1.26)
 04/08/98-
  06/30/98                 21.50          (0.05)(a)         2.83 (a)        2.78          0.00        0.00            0.00
<CAPTION>
                     Distributions
Selected Per         in Excess of
Class D Share        Net Realized
Data for the         Capital Gains
Period Ended:        -------------
<S>                  <C>
Capital
 Appreciation
 Fund
 12/31/98 +            $   0.00
 04/08/98-
  06/30/98                 0.00
Mid-Cap Growth
 Fund
 12/31/98 +            $   0.00
 04/08/98-
  06/30/98                 0.00
Equity Income
 Fund
 12/31/98 +            $   0.00
 04/08/98-
  06/30/98                 0.00
Renaissance Fund
 12/31/98 +            $   0.00
 04/08/98-
  06/30/98                 0.00
Value Fund
 12/31/98 +            $   0.00
 04/08/98-
  06/30/98                 0.00
Tax-Efficient
 Equity Fund
 09/30/98-12/31/98 +   $   0.00
Innovation Fund
 12/31/98 +            $   0.00
 04/08/98-
  06/30/98                 0.00
</TABLE>    
   
+ Unaudited     
* Annualized
(a)Per share amounts based upon average number of shares outstanding during the
period.
 
6    PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
 
<TABLE>   
<CAPTION>
                                                                                             Ratio of Net
                                                                                 Ratio of    Investment
Distribution  Tax Basis               Net Asset                                  Expenses to Income (Loss) to
from          Return of Total         Value End of              Net Assets End   Average Net Average Net      Portfolio
Equalization  Capital   Distributions Period       Total Return of Period (000s) Assets      Assets           Turnover Rate
- ------------  --------- ------------- ------------ ------------ ---------------- ----------- ---------------- -------------
<S>           <C>       <C>           <C>          <C>          <C>              <C>         <C>              <C>
  $   0.00    $   0.00    $  (1.78)     $  24.80       2.60%        $    208        1.10%*         0.35%*           62%
      0.00        0.00        0.00         26.01       2.36              118        1.10*          0.27*            75
  $   0.00    $   0.00    $  (1.08)     $  23.05       0.91%        $    252        1.11%*         0.09%*           45%
      0.00        0.00        0.00         23.99       0.08              142        1.10*          0.03*            66
  $   0.00    $   0.00    $  (1.94)     $  14.27       1.41%        $    106        1.11%*         2.45%*           38%
      0.00        0.00       (0.10)        16.04      (3.43)             104        1.10*          2.23*            45
  $   0.00    $   0.00    $  (2.33)     $  16.39      (1.04)%       $    108        1.26%*         0.08%*          104%
      0.00        0.00        0.00         19.10       0.58              126        1.25*          0.21*           192
  $   0.00    $   0.00    $  (1.82)     $  13.99       1.59%        $    108        1.11%*         1.45%*           47%
      0.00        0.00       (0.05)        15.64      (1.85)              98        1.10*          1.23*            77
  $   0.00    $   0.00    $   0.00      $  10.53       5.30%        $    790        1.10%*         0.43%*            8%
  $   0.00    $   0.00    $  (1.26)     $  30.42      31.03%        $  5,239        1.30%*        (0.96)%*          60%
      0.00        0.00        0.00         24.28      12.93              139        1.30*         (0.99)*          100
</TABLE>    
 
                                                               
                                                            Prospectus         7
<PAGE>
 
              Investment Objectives and Policies
           
              The investment objective and general investment policies of each
              Fund are described below. There can be no assurance that the in-
              vestment objective of any Fund will be achieved. Because the mar-
              ket value of each Fund's investments will change, the net asset
              value per share of each Fund will also vary. Specific portfolio
              securities eligible for purchase by the Funds, investment tech-
              niques that may be used by the Funds, and the risks associated
              with these securities and techniques are described more fully un-
              der "Characteristics and Risks of Securities and Investment Tech-
              niques" in this Prospectus and "Investment Objectives and Poli-
              cies" in the Statement of Additional Information.
 
     

Fund          Capital Appreciation Fund seeks growth of capital. The Fund in-
Descriptions  vests primarily in common stocks of companies that have improving
              fundamentals (such as growth of earnings and dividends) and whose
              stock is reasonably valued by the market. Stocks for the Fund are
              selected from a universe of the approximately 1,000 largest market
              capitalization stocks, all of which are those of companies with
              market capitalizations of at least $1 billion at the time of in-
              vestment. The Fund usually invests in approximately 60 to 100 com-
              mon stocks. Each issue is screened and ranked using five distinct
              computerized models, including: (i) a dividend growth screen, (ii)
              an equity growth screen, (iii) an earnings growth screen, (iv) an
              earnings momentum screen and (v) an earnings surprise screen. The
              Sub-Adviser believes that the models identify the stocks in the
              universe exhibiting growth characteristics with reasonable valua-
              tions. Stocks are replaced when they score worse-than-median
              screen ranks, have negative earnings surprises, or show poor rela-
              tive price performance. The universe is rescreened frequently to
              obtain a favorable composition of growth and value characteristics
              for the entire Fund. The Portfolio Managers for the Capital Appre-
              ciation Fund are David B. Breed, William B. Bannick, Katherine A.
              Burdon and Peter B. McManus of PIMCO Advisors' subsidiary Cadence.
    
   
              Mid-Cap Growth Fund seeks growth of capital. The Fund invests pri-
              marily in common stocks of middle capitalization companies that
              have improving fundamentals (such as growth of earnings and divi-
              dends) and whose stock is reasonably valued by the market. Stocks
              for the Fund are selected from a universe of companies with market
              capitalizations in excess of $500 million at the time of invest-
              ment, excluding the 200 companies with the highest market capital-
              ization. The Fund usually invests in approximately 60 to 100 com-
              mon stocks. Each issue is screened and ranked using five distinct
              computerized models, including: (i) a dividend growth screen, (ii)
              an equity growth screen, (iii) an earnings growth screen, (iv) an
              earnings momentum screen and (v) an earnings surprise screen. The
              Sub-Adviser believes that the models identify the stocks in the
              universe exhibiting growth characteristics with reasonable valua-
              tions. Stocks are replaced when they score worse-than-median
              screen ranks, have negative earnings surprises, or show poor rela-
              tive price performance. The universe is rescreened frequently to
              obtain a favorable composition of growth and value characteristics
              for the entire Fund. The Portfolio Managers for the Mid-Cap Growth
              Fund are David B. Breed, William B. Bannick, Katherine A. Burdon
              and Peter B. McManus of PIMCO Advisors' subsidiary Cadence.     
   
              Equity Income Fund seeks current income as a primary investment
              objective, and long-term growth of capital as a secondary objec-
              tive. The Fund invests primarily in common stocks characterized by
              having below-average price to earnings ("P/E") ratios and higher
              dividend yields relative to their industry groups. In selecting
              securities, the Sub-Adviser classifies a universe of approximately
              2,000 stocks by industry, each of which has a minimum market capi-
              talization of $200 million at the time of investment. The universe
              is then screened to find the lowest P/E ratios in each industry,
              subject to application of quality and price momentum screens. From
              this group, approximately 25 stocks with the highest yields are
              chosen for the Fund. The universe is then rescreened to find the
              highest yielding stock in each industry, subject to application of
              quality and price momentum screens. From this group, approximately
              25 stocks with the lowest P/E ratios are added to the Fund. Al-
              though quarterly rebalancing is a general rule, replacements are
              made whenever an alternative stock within the same industry has a
              significantly lower P/E ratio or higher dividend yield than the
              current Fund holding. The Portfolio Managers for the Equity Income
              Fund are Chris Najork and Benjamin Fischer of PIMCO Advisors' sub-
              sidiary NFJ.     
 
8    PIMCO Funds: Multi-Manager Series
<PAGE>
 

               
            Renaissance Fund seeks long-term growth of capital and income. The
            Fund invests primarily in common stocks having below-average valu-
            ations whose issuers are experiencing improvements in their busi-
            ness fundamentals. Relative valuation is determined using a multi-
            factor approach that examines characteristics such as price to
            book, price to earnings and price to cash flow ratios. Stocks
            which pass the valuation screen are further analyzed to identify
            the key drivers of financial results and catalysts for change
            which indicate that a company may demonstrate improving fundamen-
            tals in the future. Stocks which appear likely to exceed consensus
            expectations are candidates for addition to the Fund's portfolio.
            Stocks are sold from the Fund's portfolio when the Sub-Adviser be-
            lieves that their ability to exceed investor expectations has di-
            minished or when their valuations have become excessive.     
               
               The Fund may invest a portion of its assets in securities of
            foreign issuers traded in foreign securities markets (not includ-
            ing Eurodollar certificates of deposit), which will not exceed 15%
            of the Fund's assets at the time of investment. Investing in the
            securities of foreign issuers involves special risks and consider-
            ations not typically associated with investing in U.S. securities.
            For a discussion of such risks, see "Characteristics and Risks of
            Securities and Investment Techniques--Foreign Securities." The
            Fund may also purchase and write call and put options on securi-
            ties and securities indexes; enter into futures contracts and use
            options on futures contracts; buy or sell foreign currencies; and
            enter into forward foreign currency contracts. Currently, the
            Portfolio Manager for the Renaissance Fund is Clifford G. Fox of
            PIMCO Advisors' subsidiary Columbus Circle. On or about May 7,
            1999, PIMCO Equity Advisors will assume full portfolio management
            responsibility for the Renaissance Fund. John K. Schneider of
            PIMCO Equity Advisors is expected to become the Portfolio Manager
            of the Fund at that time. See "Management of the Trust--Sub-Advis-
            ers--Columbus Circle."     
               
            Value Fund seeks long-term growth of capital and income. The Fund
            invests primarily in common stocks characterized by having below-
            average P/E ratios relative to their industry groups. In selecting
            securities, the Sub-Adviser classifies a universe of approximately
            2,000 stocks by industry, each of which has a minimum market capi-
            talization of $200 million at the time of investment. The universe
            is then screened to find the stocks with the lowest P/E ratios in
            each industry, subject to application of quality and price momen-
            tum screens. The stocks in each industry with the lowest P/E ra-
            tios that pass the quality and price momentum screens are then se-
            lected for the Fund. The Fund usually invests in approximately 50
            stocks, although the Fund may reduce its holdings below this num-
            ber (normally not below 30 stocks) if the Sub-Adviser believes
            that this would help the Fund to achieve its investment objective.
            Although quarterly rebalancing is a general rule, replacements are
            made whenever an alternative stock within the same industry has a
            significantly lower P/E ratio than the current Fund holdings. The
            Portfolio Managers for the Value Fund are Chris Najork, Benjamin
            Fischer and Paul A. Magnuson of PIMCO Advisors' subsidiary NFJ.
                
            Tax-Efficient Equity Fund seeks maximum after-tax growth of capi-
            tal. The Fund attempts to provide a total return which exceeds the
            return of the Standard & Poor's 500 Composite Stock Price Index
            (the "S&P 500"). In addition, the Fund seeks to achieve superior
            after-tax returns for its shareholders in part by minimizing the
            taxes they incur in connection with the Fund's investment income
            and realized capital gains by using the strategies described be-
            low. Notwithstanding these strategies, the Fund may have taxable
            investment income and may realize taxable gains from time to time.
               
               The Fund invests primarily in a broadly diversified portfolio
            of at least 200 common stocks. Normally, at least 95% of the
            Fund's assets will be invested in stocks represented in the S&P
            500 and the Fund's portfolio is designed to have certain charac-
            teristics that are similar to those of the index. These character-
            istics include such measures as dividend yield, P/E ratio, rela-
            tive volatility, economic sector exposure, return on equity and
            market price-to-book value ratio. However, the Sub-Adviser at-
            tempts to construct a portfolio that produces a higher total re-
            turn than the S&P 500 by using the quantitative security selection
            techniques described below. Of course, there can be no assurance
            that the Fund's investment performance will equal or exceed that
            of the S&P 500.     
 

                                                                 
                                                              Prospectus       9
<PAGE>
 
               
               In selecting specific securities, the Sub-Adviser uses a pro-
            prietary quantitative model that ranks companies based on long-
            term (5-10 years) price appreciation potential through analysis of
            such factors as growth of sustainable earnings and dividend behav-
            ior. Securities in the top 50% of the model's ranking are consid-
            ered for purchase. The Sub-Adviser's sell discipline incorporates
            a focus on reducing the realization of capital gains. Each sell
            candidate is evaluated based on its cost, current market value,
            and anticipated benefit of replacement. Securities in the bottom
            20% of the model's ranking are considered for sale. The Fund may
            engage in the purchase and writing of options on securities in-
            dexes and may also invest in stock index futures contracts and op-
            tions thereon.     
               
               The Sub-Adviser utilizes a range of active tax management tech-
            niques to minimize taxable distributions, including: low portfolio
            turnover; emphasis towards low-dividend, growth-oriented compa-
            nies; tax lot accounting (identification of specific shares of se-
            curities being sold that have the lowest tax cost); and regular
            rebalancing to capture available tax credits. The Fund will gener-
            ally seek to avoid realizing net short-term capital gains and,
            when realizing gains, will attempt to realize long-term gains
            (i.e., gains on securities held for more than 12 months). The Fund
            intends to notify each shareholder as to that portion of his or
            her capital gain dividends which qualifies for a long-term tax
            rate, generally taxed at a maximum tax rate of 20% in the hands of
            a shareholder who is an individual. Net short-term capital gains,
            when distributed, will be taxed as ordinary income, generally sub-
            ject to graduated tax rates of up to 39.6% for shareholders who
            are individuals. When the Fund decides to sell a particular appre-
            ciated security, it will normally select for sale first those
            share lots with holding periods exceeding 12 months and among
            those, the share lots with the highest cost basis. The Fund may,
            when prudent, sell securities to realize capital losses that can
            be used to offset realized capital gains.     
               To protect against price declines in securities holdings with
            large accumulated capital gains, the Fund may, to the extent per-
            mitted by law, use hedging techniques such as the purchase of put
            options, the sale of stock index futures contracts and equity
            swaps. By using these techniques rather than selling such securi-
            ties, the Fund can reduce its exposure to price declines in the
            securities without realizing substantial capital gains. In limited
            circumstances, the Fund may follow the practice of distributing
            selected appreciated securities to meet redemptions of certain in-
            vestors and may, within certain limits, use the selection of secu-
            rities distributed to meet such redemptions as a management tool.
            By distributing appreciated securities the Fund can reduce its po-
            sition in such securities without realizing capital gains. During
            periods of net withdrawals by investors, using distributions of
            securities could enable the Fund to avoid the forced sale of secu-
            rities to raise cash for meeting redemptions.
               
               It is expected that by employing the various tax-efficient man-
            agement strategies described above, the Fund can minimize the ex-
            tent to which shareholders incur taxes as a result of realized
            capital gains. The Fund may nevertheless realize gains and share-
            holders will incur tax liability from time to time. The Portfolio
            Managers for the Tax-Efficient Equity Fund are David Stein, Tom
            Seto and Cliff Quisenberry of PIMCO Advisors' subsidiary Paramet-
            ric.     
 
            Innovation Fund seeks capital appreciation. No consideration is
            given to income. The Fund invests primarily (i.e., at least 65% of
            its assets) in common stocks of companies which utilize innovative
            technologies to gain a strategic competitive advantage in their
            industry as well as companies that provide and service those tech-
            nologies. Although the Fund emphasizes the utilization of technol-
            ogies, it is not restricted to investment in companies in a par-
            ticular business sector or industry.
               
               The Fund may invest a portion of its assets in securities of
            foreign issuers traded in foreign securities markets (not includ-
            ing Eurodollar certificates of deposit), which will not exceed 15%
            of the Fund's assets at the time of investment. Investing in the
            securities of foreign issuers involves special risks and consider-
            ations not typically associated with investing in U.S. companies.
            For a discussion of such risks, see "Characteristics and Risks of
            Securities and Investment Techniques--Foreign Securities." The
            Fund may also purchase and write call and put options on securi-
            ties and securities indexes; enter into futures contracts and use
            options on futures contracts; buy or sell foreign currencies; and
            enter into forward foreign currency contracts. The Portfolio Man-
            ager for the Innovation Fund is Dennis P. McKechnie of PIMCO Eq-
            uity Advisors.     

 
10    PIMCO Funds: Multi-Manager Series
<PAGE>
 
                                                                 
                                                              Prospectus     
 
 
Stock          
Investments The Capital Appreciation, Mid-Cap Growth, Equity Income, Value and
            Tax-Efficient Equity Funds will each invest primarily (normally at
            least 65% of its assets) in common stock. Each of these Funds may
            maintain a portion of its assets, which will usually not exceed
            10%, in U.S. Government securities, high quality debt securities
            (whose maturity or remaining maturity will not exceed five years),
            money market obligations, and in cash to provide for payment of
            the Fund's expenses and to meet redemption requests. It is the
            policy of these Funds to be as fully invested in common stocks as
            practicable at all times. This policy precludes these Funds from
            investing in debt securities as a defensive investment posture
            (although these Funds may invest in such securities to provide for
            payment of expenses and to meet redemption requests). Accordingly,
            investors in these Funds bear the risk of general declines in
            stock prices and the risk that a Fund's exposure to such declines
            cannot be lessened by investment in debt securities. These Funds
            may also invest in convertible securities, preferred stocks, and
            warrants, subject to certain limitations.     
               The Renaissance and Innovation Funds will invest primarily
            (normally at least 65% of its assets) in common stocks, and may
            also invest in other equity securities, including preferred stocks
            and securities (including debt securities and warrants) convert-
            ible into or exercisable for common stocks. Each of these Funds
            may invest a portion of its assets in debt securities and, for
            temporary defensive purposes, up to 100% of its assets in short-
            term U.S. Government securities and other money market instru-
            ments.
               
               One or more of the Funds may temporarily not be invested pri-
            marily in equity securities immediately following the commencement
            of operations or after receipt of significant new monies. While
            attempting to identify suitable investments, the Funds may hold
            assets in cash, short-term U.S. Government Securities and other
            money market instruments. Any of the Funds may temporarily not
            contain the number of securities in which it normally invests if
            the Fund does not have sufficient assets to be fully invested, or
            pending the Sub-Adviser's ability to prudently invest new monies.
                   
               The Funds may also lend portfolio securities; enter into repur-
            chase agreements and reverse repurchase agreements (subject to the
            Funds' investment limitations described below); purchase and sell
            securities on a when-issued or delayed delivery basis; and enter
            into forward commitments to purchase securities. Each of the Funds
            may invest in American Depository Receipts ("ADRs"), and the Re-
            naissance and Innovation Funds may also invest in European Deposi-
            tory Receipts ("EDRs") and Global Depository Receipts ("GDRs").
            Each Fund may invest up to 5% of its assets in securities of other
            investment companies, and thus may indirectly bear service and
            other fees which are in addition to the fees the Funds pay their
            service providers. For more information on these investment prac-
            tices, see "Characteristics and Risks of Securities and Investment
            Techniques" in this Prospectus and "Investment Objectives and Pol-
            icies" in the Statement of Additional Information.     
 
            Characteristics and Risks of
            Securities and Investment Techniques
 
            The different types of securities and investment techniques used
            by the individual Funds all have attendant risks of varying de-
            grees. For example, with respect to common stock, there can be no
            assurance of capital appreciation, and there is a risk of market
            decline. With respect to debt securities, including money market
            instruments, there is the risk that the issuer of a security may
            not be able to meet its obligation to make scheduled interest or
            principal payments. Because each Fund seeks a different investment
            objective and has different investment policies, each is subject
            to varying degrees of financial, market and credit risks. There-
            fore, investors should carefully consider the investment objec-
            tive, investment policies and potential risks of any Fund or Funds
            before investing.
               The following describes potential risks associated with differ-
            ent types of investment techniques that may be used by the indi-
            vidual Funds. For more detailed information on these investment
            techniques, as well as information on the types of securities in
            which some or all of the Funds may invest, see the Statement of
            Additional Information.
 
 
                                                                              11
<PAGE>
 
 
Investments       Certain of the Funds may invest in common stock of companies
In                with market capitalizations that are small compared to other
Companies         publicly traded companies. Generally, small market
With Small        capitalization is considered to be less than $1.5 billion and
and Medium        large market capitalization is considered to be more than $5
Market            billion. Investments in larger companies present certain
Capitalizations   advantages in that such companies generally have greater
                  financial resources, more extensive research and development,
                  manufacturing, marketing and service capabilities, and more
                  stability and greater depth of management and personnel.
                  Investments in smaller, less seasoned companies may present
                  greater opportunities for growth but also may involve greater
                  risks than customarily are associated with more established
                  companies. The securities of smaller companies may be subject
                  to more abrupt or erratic market movements than larger, more
                  established companies. These companies may have limited
                  product lines, markets or financial resources, or they may be
                  dependent upon a limited management group. Their securities
                  may be traded in the over-the-counter market or on a regional
                  exchange, or may otherwise have limited liquidity. As a
                  result of owning large positions in this type of security, a
                  Fund is subject to the additional risk of possibly having to
                  sell portfolio securities at disadvantageous times and prices
                  if redemptions require the Fund to liquidate its securities
                  positions. In addition, it may be prudent for a Fund with a
                  relatively large asset size to limit the number of relatively
                  small positions it holds in securities having limited
                  liquidity in order to minimize its exposure to such risks, to
                  minimize transaction costs, and to maximize the benefits of
                  research. As a consequence, as a Fund's asset size increases,
                  the Fund may reduce its exposure to illiquid small
                  capitalization securities, which could adversely affect
                  performance.

                  Many of the Funds may also invest in stocks of companies with
                  medium market capitalizations. Whether a U.S. issuer's market
                  capitalization is medium is determined by reference to the
                  capitalization for all issuers whose equity securities are
                  listed on a United States national securities exchange or
                  which are reported on NASDAQ. Issuers with market
                  capitalizations within the range of capitalization of
                  companies included in the S&P Mid Cap 400 Index may be
                  regarded as being issuers with medium market capitalizations.
                  Such investments share some of the risk characteristics of
                  investments in stocks of companies with small market
                  capitalizations described above, although such companies tend
                  to have longer operating histories, broader product lines and
                  greater financial resources and their stocks tend to be more
                  liquid and less volatile than those of smaller capitalization
                  issuers.

Foreign           The Renaissance and Innovation Funds may invest up to 15% of
Securities        their respective assets in securities which are traded
                  principally in securities markets outside the United States
                  (Eurodollar certificates of deposit are excluded for purposes
                  of these limitations), and may invest without limit in
                  securities of foreign issuers that are traded in U.S.
                  markets. All of the Funds may invest in ADRs. In addition,
                  the Renaissance and Innovation Funds may invest in EDRs and
                  GDRs. ADRs are dollar denominated receipts issued generally
                  by domestic banks and representing the deposit with the bank
                  of a security of a foreign issuer, and are publicly traded on
                  exchanges or over-the-counter in the United States. EDRs are
                  receipts similar to ADRs and are issued and traded in Europe.
                  GDRs may be offered privately in the United States and also
                  trade in public or private markets in other countries.

                  Investing in the securities of issuers in any foreign country
                  involves special risks and considerations not typically
                  associated with investing in U.S. companies. Shareholders
                  should consider carefully the substantial risks involved in
                  investing in securities issued by companies and governments
                  of foreign nations. These risks include: differences in
                  accounting, auditing and financial reporting standards;
                  generally higher commission rates on foreign portfolio
                  transactions; the possibility of nationalization,
                  expropriation or confiscatory taxation; adverse changes in
                  investment or exchange control regulations (which may include
                  suspension of the ability to transfer currency from a
                  country); and political instability which could affect U.S.
                  investments in foreign countries. Individual foreign
                  economies may differ favorably or unfavorably from the U.S.
                  economy in such respects as growth of gross domestic product,
                  rate of inflation, capital reinvestment, resources, self-
                  sufficiency, and balance of payments position. The securities
                  markets, values of securities, yields, and risks associated
                  with securities markets may change independently of each
                  other. Additionally, foreign securities and dividends and
                  interest payable on those securities may be subject to
                  foreign taxes, including taxes withheld from payments on
                  those securities. Foreign securities often trade with less
                  frequency and volume than domes-
 

12   PIMCO Funds: Multi-Manager Series
<PAGE>
 

             tic securities and therefore may exhibit greater price volatility.
             Additional costs associated with an investment in foreign securi-
             ties may include higher custodial fees than apply to domestic cus-
             todial arrangements and transaction costs of foreign currency con-
             versions. Changes in foreign exchange rates also will affect the
             value of securities denominated or quoted in currencies other than
             the U.S. dollar.
               A Fund's investments in foreign currency denominated debt obli-
             gations and hedging activities will likely produce a difference
             between its book income and its taxable income. This difference
             may cause a portion of the Fund's income distributions to consti-
             tute returns of capital for tax purposes or require the Fund to
             make distributions exceeding book income to qualify as a regulated
             investment company for federal tax purposes.
               To the extent that the Renaissance and Innovation Funds invest
             in foreign securities, these Funds may invest in the securities of
             issuers based in countries with developing economies. Investing in
             developing (or "emerging market") countries involves certain risks
             not typically associated with investing in U.S. securities, and
             imposes risks greater than, or in addition to, risks of investing
             in foreign, developed countries. A number of emerging market coun-
             tries restrict, to varying degrees, foreign investment in securi-
             ties. Repatriation of investment income, capital, and the proceeds
             of sales by foreign investors may require governmental registra-
             tion and/or approval in some emerging market countries. A number
             of the currencies of emerging market countries have experienced
             significant declines against the U.S. dollar in recent years, and
             devaluation may occur subsequent to investments in these curren-
             cies by a Fund. Inflation and rapid fluctuations in inflation
             rates have had, and may continue to have, negative effects on the
             economies and securities markets of certain emerging market coun-
             tries. Many of the emerging securities markets are relatively
             small, have low trading volumes, suffer periods of relative illi-
             quidity, and are characterized by significant price volatility.
             There is a risk in emerging market countries that a future eco-
             nomic or political crisis could lead to price controls, forced
             mergers of companies, expropriation or confiscatory taxation, sei-
             zure, nationalization, or creation of government monopolies, any
             of which may have a detrimental effect on a Fund's investment.
               Additional risks of investing in emerging market countries may
             include: currency exchange rate fluctuations; greater social, eco-
             nomic and political uncertainty and instability (including the
             risk of war); more substantial governmental involvement in the
             economy; less governmental supervision and regulation of the secu-
             rities markets and participants in those markets; unavailability
             of currency hedging techniques in certain emerging market coun-
             tries; the fact that companies in emerging market countries may be
             newly organized and may be smaller and less seasoned companies;
             the difference in, or lack of, auditing and financial reporting
             standards, which may result in unavailability of material informa-
             tion about issuers; the risk that it may be more difficult to ob-
             tain and/or enforce a judgment in a court outside the United
             States; and significantly smaller market capitalization of securi-
             ties markets. Also, any change in the leadership or policies of
             emerging market countries, or the countries that exercise a sig-
             nificant influence over those countries, may halt the expansion of
             or reverse the liberalization of foreign investment policies now
             occurring and adversely affect existing investment opportunities.
               In addition, emerging securities markets may have different
             clearance and settlement procedures, which may be unable to keep
             pace with the volume of securities transactions or otherwise make
             it difficult to engage in such transactions. Settlement problems
             may cause a Fund to miss attractive investment opportunities, hold
             a portion of its assets in cash pending investment, or delay in
             disposing of a portfolio security. Such a delay could result in
             possible liability to a purchaser of the security.
 
   
Foreign      Foreign currency exchange rates may fluctuate significantly over
Currency     short periods of time. They generally are determined by the forces
Transactions of supply and demand in the foreign exchange markets and the rela-
             tive merits of investments in different countries, actual or per-
             ceived changes in interest rates and other complex factors, as
             seen from an international perspective. Currency exchange rates
             also can be affected unpredictably by intervention (or the failure
             to intervene) by U.S. or foreign governments or central banks, or
             by currency controls or political developments in the U.S. or
             abroad. For example, significant uncertainty surrounds the recent
             introduction of the euro (a common currency unit for the European
             Union) in January 1999 and its effect on the value of securities
             denominated in local European     
 

                                                               
                                                            Prospectus        13
<PAGE>
 

            currencies. These and other currencies in which the Funds' assets
            are denominated may be devalued against the U.S. dollar, resulting
            in a loss to the Funds. For a more complete discussion of foreign
            currency risks (including those associated with the euro), please
            see "Investment Objectives and Policies--Foreign Currencies" in
            the Statement of Additional Information.
               The Renaissance and Innovation Funds may enter into forward
            foreign currency exchange contracts to reduce the risks of adverse
            changes in foreign exchange rates. A forward foreign currency ex-
            change contract involves an obligation to purchase or sell a spe-
            cific currency at a future date, which may be any fixed number of
            days from the date of the contract agreed upon by the parties, at
            a price set at the time of the contract. By entering into a for-
            ward foreign currency exchange contract, the Fund "locks in" the
            exchange rate between the currency it will deliver and the cur-
            rency it will receive for the duration of the contract. As a re-
            sult, a Fund reduces its exposure to changes in the value of the
            currency it will deliver and increases its exposure to changes in
            the value of the currency it will exchange into. The effect on the
            value of a Fund is similar to selling securities denominated in
            one currency and purchasing securities denominated in another cur-
            rency. Contracts to sell foreign currency would limit any poten-
            tial gain which might be realized by a Fund if the value of the
            hedged currency increases. A Fund may enter into these contracts
            for the purpose of hedging against foreign exchange risk arising
            from the Fund's investment or anticipated investment in securities
            denominated in foreign currencies. Suitable hedging transactions
            may not be available in all circumstances and there can be no as-
            surance that a Fund will engage in such transactions at any given
            time or from time to time. Also, such transactions may not be suc-
            cessful and may eliminate any chance for a Fund to benefit from
            favorable fluctuations in relevant foreign currencies.
 
Money       Each of the Funds may invest at least a portion of its assets in
Market      the following kinds of money market instruments:
Instruments    (1)short-term U.S. Government securities;
                  
               (2) certificates of deposit, bankers' acceptances and other
                   bank obligations rated in the two highest rating categories
                   by at least two NRSROs, or, if rated by only one NRSRO, in
                   such agency's two highest grades, or, if unrated,
                   determined to be of comparable quality by the Adviser or a
                   Sub-Adviser. Bank obligations must be those of a bank that
                   has deposits in excess of $2 billion or that is a member of
                   the Federal Deposit Insurance Corporation. A Fund may
                   invest in obligations of U.S. branches or subsidiaries of
                   foreign banks ("Yankee dollar obligations") or foreign
                   branches of U.S. banks ("Eurodollar obligations");     
                  
               (3) commercial paper rated in the two highest rating categories
                   by at least two NRSROs, or, if rated by only one NRSRO, in
                   such agency's two highest grades, or, if unrated, deter-
                   mined to be of comparable quality by the Adviser or a Sub-
                   Adviser;     
                  
               (4) corporate obligations with a remaining maturity of 397 days
                   or less whose issuers have outstanding short-term debt ob-
                   ligations rated in the highest rating category by at least
                   two NRSROs, or, if rated by only one NRSRO, in such
                   agency's highest grade, or, if unrated, determined to be of
                   comparable quality by the Adviser or a Sub-Adviser; and
                       
               (5)repurchase agreements with domestic commercial banks or reg-
               istered broker-dealers.
            
               
Mortgage-   The Renaissance and Innovation Funds may invest in mortgage-re-
RelatedAnd  lated securities, and in other asset-backed securities (unrelated
OtherAsset- to mortgage loans) that are offered to investors currently or in
Backed      the future. The value of some mortgage-related or asset-backed se-
Securities  curities in which the Funds invest may be particularly sensitive
            to changes in prevailing interest rates, and, like other fixed in-
            come investments, the ability of a Fund to successfully utilize
            these instruments may depend in part upon the ability of the Sub-
            Adviser to forecast interest rates and other economic factors cor-
            rectly.     
 
            Mortgage Pass-Through Securities are securities representing in-
            terests in "pools" of mortgage loans secured by residential or
            commercial real property in which payments of both interest and
            principal on the securities are generally made monthly, in effect
            "passing through" monthly payments made by the individual borrow-
            ers on the mortgage loans
 
14   PIMCO Funds: Multi-Manager Series
<PAGE>
 

            which underlie the securities (net of fees paid to the issuer or
            guarantor of the securities). Early repayment of principal on some
            mortgage-related securities (arising from prepayments of principal
            due to sale of the underlying property, refinancing, or foreclo-
            sure, net of fees and costs which may be incurred) may expose a
            Fund to a lower rate of return upon reinvestment of principal. Al-
            so, if a security subject to prepayment has been purchased at a
            premium, the value of the premium would be lost in the event of
            prepayment. Like other fixed income securities, when interest
            rates rise, the value of a mortgage-related security generally
            will decline; however, when interest rates are declining, the
            value of mortgage-related securities with prepayment features may
            not increase as much as other fixed income securities. The rate of
            prepayments on underlying mortgages will affect the price and vol-
            atility of a mortgage-related security, and may have the effect of
            shortening or extending the effective maturity of the security be-
            yond what was anticipated at the time of purchase. To the extent
            that unanticipated rates of prepayment on underlying mortgages in-
            crease the effective maturity of a mortgage-related security, the
            volatility of such security can be expected to increase.
               Payment of principal and interest on some mortgage pass-through
            securities (but not the market value of the securities themselves)
            may be guaranteed by the full faith and credit of the U.S. Govern-
            ment (in the case of securities guaranteed by the Government Na-
            tional Mortgage Association ("GNMA")); or guaranteed by agencies
            or instrumentalities of the U.S. Government (in the case of secu-
            rities guaranteed by the Federal National Mortgage Association
            ("FNMA") or the Federal Home Loan Mortgage Corporation ("FHLMC"),
            which are supported only by the discretionary authority of the
            U.S. Government to purchase the agency's obligations). Mortgage-
            related securities created by non-governmental issuers (such as
            commercial banks, savings and loan institutions, private mortgage
            insurance companies, mortgage bankers and other secondary market
            issuers) may be supported by various forms of insurance or guaran-
            tees, including individual loan, title, pool and hazard insurance
            and letters of credit, which may be issued by governmental enti-
            ties, private insurers or the mortgage poolers.
 
            Collateralized Mortgage Obligations ("CMOs") are hybrid mortgage-
            related instruments. Similar to a bond, interest and pre-paid
            principal on a CMO are paid, in most cases, on a monthly basis.
            CMOs may be collateralized by whole mortgage loans but are more
            typically collateralized by portfolios of mortgage pass-through
            securities guaranteed by GNMA, FHLMC, or FNMA. CMOs are structured
            into multiple classes, with each class bearing a different stated
            maturity. Monthly payments of principal, including prepayments,
            are first returned to investors holding the shortest maturity
            class; investors holding the longer maturity classes receive prin-
            cipal only after the first class has been retired. CMOs that are
            issued or guaranteed by the U.S. Government or by any of its agen-
            cies or instrumentalities will be considered U.S. Government secu-
            rities by a Fund, while other CMOs, even if collateralized by U.S.
            Government securities, will have the same status as other pri-
            vately issued securities for purposes of applying a Fund's diver-
            sification tests.
 
            Commercial Mortgage-Backed Securities include securities that re-
            flect an interest in, and are secured by, mortgage loans on com-
            mercial real property. The market for commercial mortgage-backed
            securities developed more recently and in terms of total outstand-
            ing principal amount of issues is relatively small compared to the
            market for residential single-family mortgage-backed securities.
            Many of the risks of investing in commercial mortgage-backed secu-
            rities reflect the risks of investing in the real estate securing
            the underlying mortgage loans. These risks reflect the effects of
            local and other economic conditions on real estate markets, the
            ability of tenants to make loan payments, and the ability of a
            property to attract and retain tenants. Commercial mortgage-backed
            securities may be less liquid and exhibit greater price volatility
            than other types of mortgage-related or asset-backed securities.
 
            Mortgage-Related Securities include securities other than those
            described above that directly or indirectly represent a participa-
            tion in, or are secured by and payable from, mortgage loans on
            real property, such as CMO residuals or stripped mortgage-backed
            securities ("SMBS"), and may be structured in classes with rights
            to receive varying proportions of principal and interest.
 

                                                               
                                                            Prospectus        15
<PAGE>
 

               A common type of SMBS will have one class receiving some of the
            interest and most of the principal from the mortgage assets, while
            the other class will receive most of the interest and the remain-
            der of the principal. In the most extreme case, one class will re-
            ceive all of the interest (the interest-only, or "IO" class),
            while the other class will receive all of the principal (the prin-
            cipal-only, or "PO" class). The yield to maturity on an IO class
            is extremely sensitive to the rate of principal payments (includ-
            ing prepayments) on the related underlying mortgage assets, and a
            rapid rate of principal payments may have a material adverse ef-
            fect on a Fund's yield to maturity from these securities. For a
            discussion of the characteristics of some of these instruments,
            see the Statement of Additional Information.
 
 
Convertible Many of the Funds may invest in convertible securities. Convert-
Securities  ible securities are generally preferred stocks or fixed income se-
            curities that are convertible into common stock at either a stated
            price or a stated rate. The price of the convertible security will
            normally vary in some proportion to changes in the price of the
            underlying common stock because of this conversion feature. A con-
            vertible security will normally also provide a fixed income
            stream. For this reason, the convertible security may not decline
            in price as rapidly as the underlying common stock.
               
               A Fund's Sub-Adviser will select convertible securities to be
            purchased by the Fund based primarily upon its evaluation of the
            fundamental investment characteristics and growth prospects of the
            issuer of the security. As a fixed income security, a convertible
            security tends to increase in market value when interest rates de-
            cline and to decrease in value when interest rates rise. While
            convertible securities generally offer lower interest or dividend
            yields than non-convertible fixed income securities of similar
            quality, their value tends to increase as the market value of the
            underlying stock increases and to decrease when the value of the
            underlying stock decreases.     
               The Renaissance Fund may invest in so-called "synthetic con-
            vertible securities," which are composed of two or more different
            securities whose investment characteristics, taken together, re-
            semble those of convertible securities. For example, the Renais-
            sance Fund may purchase a non-convertible debt security and a war-
            rant or option. The synthetic convertible differs from the true
            convertible security in several respects. Unlike a true convert-
            ible security, which is a single security having a unitary market
            value, a synthetic convertible comprises two or more separate se-
            curities, each with its own market value. Therefore, the "market
            value" of a synthetic convertible is the sum of the values of its
            fixed income component and its convertible component. For this
            reason, the values of a synthetic convertible and a true convert-
            ible security may respond differently to market fluctuations.
 
 
   
Risks of    The Renaissance Fund may invest a portion of its assets in fixed
High Yield  income securities rated lower than Baa by Moody's or lower than
Securities  BBB by S&P but rated at least B by Moody's or S&P or, if not rat-
("Junk      ed, determined by the Sub-Adviser to be of comparable quality. In
Bonds")     addition, the Renaissance Fund may invest in convertible securi-
            ties rated below B by Moody's or S&P (or, if unrated, considered
            by the Sub-Adviser to be of comparable quality). Securities rated
            lower than Baa by Moody's or lower than BBB by S&P are sometimes
            referred to as "high yield" or "junk" bonds. Investors should con-
            sider the risks associated with high yield securities before in-
            vesting in this Fund. Although the Renaissance Fund reserves the
            right to do so at any time, as of the date of this Prospectus, it
            does not invest or have the present intention to invest more than
            5% of its assets in high yield securities or junk bonds.     
               
               Investing in high yield securities involves special risks in
            addition to the risks associated with investments in higher rated
            fixed income securities. While offering a greater potential oppor-
            tunity for capital appreciation and higher yields than investments
            in higher rated debt securities, high yield securities typically
            entail greater potential price volatility and may be less liquid
            than investment grade debt. High yield securities may be regarded
            as predominately speculative with respect to the issuer's continu-
            ing ability to meet principal and interest payments. Analysis of
            the creditworthiness of issuers of high yield securities may be
            more complex than for issuers of higher quality debt securities,
            and achievement of a Fund's investment objective may, to the ex-
            tent of its investments in high yield securities, depend more
            heavily on the Sub-Adviser's creditworthiness analysis than would
            be the case if the Fund were investing in higher quality securi-
            ties. High yield securities may be more susceptible to real or
            perceived adverse economic and competitive industry conditions
            than higher grade securities.     
 

16   PIMCO Funds: Multi-Manager Series
<PAGE>
 

               For additional discussion of the characteristics of lower rated
            fixed income securities, see the Statement of Additional Informa-
            tion. Ratings assigned to fixed income securities are described in
            the Appendix to the Statement of Additional Information.
 
 
   
Derivative  To the extent permitted by the investment objective and policies
Instruments of each Fund, a Fund may purchase and write call and put options
            on securities, securities indexes and foreign currencies, and en-
            ter into futures contracts and use options on futures contracts as
            further described below. In pursuit of their investment objec-
            tives, the Renaissance, Tax-Efficient Equity and Innovation Funds
            may engage in the purchase and writing of call and put options on
            securities and securities indexes and enter into futures contracts
            and options thereon, including securities index futures contracts
            and options thereon. The Funds that may invest in foreign-currency
            denominated securities may engage in the purchase and writing of
            call and put options on foreign currencies. The Funds may (but are
            not required to) use these techniques to hedge against changes in
            interest rates, foreign currency exchange rates or securities
            prices. Each Fund will segregate assets determined to be liquid by
            the Adviser or a Sub-Adviser in accordance with procedures estab-
            lished by the Board of Trustees (or, as permitted by applicable
            regulation, enter into certain offsetting positions) to cover its
            obligations under options and futures to limit leveraging of the
            Fund.     
               
               Derivative instruments are considered for these purposes to
            consist of securities or other instruments whose value is derived
            from or related to the value of some other instrument or asset,
            and not to include those securities whose payment of principal
            and/or interest depend upon cash flows from underlying assets,
            such as mortgage-related or asset-backed securities. See "Mort-
            gage-Related and Other Asset-Backed Securities." The value of some
            derivative instruments in which the Funds may invest may be par-
            ticularly sensitive to changes in prevailing interest rates, and,
            like the other investments of the Funds, the ability of a Fund to
            successfully utilize these instruments may depend in part upon the
            ability of the Sub-Adviser to forecast interest rates and other
            economic factors correctly. If the Sub-Adviser incorrectly fore-
            casts such factors and has taken positions in derivative instru-
            ments contrary to prevailing market trends, the Funds could be ex-
            posed to the risk of loss.     
               
               The Funds might not employ any of the strategies described be-
            low, and no assurance can be given that any strategy used will
            succeed. If the Sub-Adviser incorrectly forecasts interest rates,
            market values or other economic factors in utilizing a derivatives
            strategy for a Fund, the Fund might have been in a better position
            if it had not entered into the transaction at all. Also, suitable
            derivative transactions may not be available in all circumstances.
            The use of these strategies involves certain special risks, in-
            cluding a possible imperfect correlation, or even no correlation,
            between price movements of derivative instruments and price move-
            ments of related investments. While some strategies involving de-
            rivative instruments can reduce the risk of loss, they can also
            reduce the opportunity for gain or even result in losses by off-
            setting favorable price movements in related investments or other-
            wise, due to the possible inability of a Fund to purchase or sell
            a portfolio security at a time that would be favorable or the pos-
            sible need to sell a portfolio security at a disadvantageous time
            because the Fund is required to maintain asset coverage or offset-
            ting positions in connection with transactions in derivative in-
            struments, and the possible inability of a Fund to close out or to
            liquidate its derivatives positions. In addition, a Fund's use of
            such instruments may cause the Fund to realize higher amounts of
            short-term capital gains (generally taxed to shareholders at ordi-
            nary income tax rates) than if it had not used such instruments.
                
            Options on Securities, Securities Indexes and Currencies Certain
            Funds may purchase put options on securities. One purpose of pur-
            chasing put options is to protect holdings in an underlying or re-
            lated security against a substantial decline in market value.
            These Funds may also purchase call options on securities. One pur-
            pose of purchasing call options is to protect against substantial
            increases in prices of securities the Fund intends to purchase
            pending its ability to invest in such securities in an orderly
            manner. A Fund may sell put or call options it has previously pur-
            chased, which could result in a net gain or loss depending on
            whether the amount realized on the sale is more or less than the
            premium and other transaction costs paid on the put or call option
            which is sold. A Fund may write a
 
                                                               
                                                            Prospectus        17
<PAGE>
 

            call or put option only if the option is "covered" by the Fund
            holding a position in the underlying securities or by other means
            which would permit immediate satisfaction of the Fund's obligation
            as writer of the option. Prior to exercise or expiration, an op-
            tion may be closed out by an offsetting purchase or sale of an op-
            tion of the same series.
               The purchase and writing of options involves certain risks.
            During the option period, the covered call writer has, in return
            for the premium on the option, given up the opportunity to profit
            from a price increase in the underlying security above the exer-
            cise price, but, as long as its obligation as a writer continues,
            has retained the risk of loss should the price of the underlying
            security decline. The writer of an option has no control over the
            time when it may be required to fulfill its obligation as a writer
            of the option. Once an option writer has received an exercise no-
            tice, it cannot effect a closing purchase transaction in order to
            terminate its obligation under the option and must deliver the un-
            derlying security at the exercise price. If a put or call option
            purchased by the Fund is not sold when it has remaining value, and
            if the market price of the underlying security remains equal to or
            greater than the exercise price (in the case of a put), or remains
            less than or equal to the exercise price (in the case of a call),
            the Fund will lose its entire investment in the option. Also,
            where a put or call option on a particular security is purchased
            to hedge against price movements in a related security, the price
            of the put or call option may move more or less than the price of
            the related security. There can be no assurance that a liquid mar-
            ket will exist when a Fund seeks to close out an option position.
            Furthermore, if trading restrictions or suspensions are imposed on
            the options markets, a Fund may be unable to close out a position.
               For each of the Renaissance and Innovation Funds, in the case
            of a written call option on a securities index, the Fund will own
            corresponding securities whose historic volatility correlates with
            that of the index.
               Over-the-counter options in which certain Funds may invest dif-
            fer from traded options in that they are two-party contracts, with
            price and other terms negotiated between buyer and seller, and
            generally do not have as much market liquidity as exchange-traded
            options. The Funds may be required to treat as illiquid over-the-
            counter options purchased and securities being used to cover cer-
            tain written over-the-counter options.
 
            Swap Agreements The Tax-Efficient Equity Fund may enter into eq-
            uity index swap agreements for purposes of gaining exposure to the
            stocks making up an index of securities without actually purchas-
            ing those stocks. Swap agreements are two-party contracts entered
            into primarily by institutional investors for periods ranging from
            a few weeks to more than one year. In a standard swap transaction,
            two parties agree to exchange the returns (or differentials in
            rates of return) earned or realized on particular predetermined
            investments or instruments, which may be adjusted for an interest
            factor. The gross returns to be exchanged or "swapped" between the
            parties are generally calculated with respect to a "notional
            amount," i.e., the return on or increase in value of a particular
            dollar amount invested at a particular interest rate, or in a
            "basket" of securities representing a particular index.
               
               Most swap agreements entered into by the Fund calculate the ob-
            ligations of the parties to the agreement on a "net basis." Conse-
            quently, the Fund's current obligations (or rights) under a swap
            agreement will generally be equal only to the net amount to be
            paid or received under the agreement based on the relative values
            of the positions held by each party to the agreement (the "net
            amount"). The Fund's current obligations under a swap agreement
            will be accrued daily (offset against amounts owed to the Fund),
            and any accrued but unpaid net amounts owed to a swap counterparty
            will be covered by the segregation of assets determined to be liq-
            uid by the Sub-Adviser in accordance with procedures established
            by the Board of Trustees to limit any potential leveraging of the
            Fund's portfolio. Obligations under swap agreements so covered
            will not be construed to be "senior securities" for purposes of
            the Fund's investment restriction concerning senior securities.
            The Fund will not enter into a swap agreement with any single
            party if the net amount owed or to be received under existing con-
            tracts with that party would exceed 5% of the Fund's assets.     
               
               Whether the Fund's use of swap agreements will be successful in
            furthering its investment objective will depend on the Sub-Advis-
            er's ability to predict correctly whether certain types of invest-
            ments are likely to produce greater returns than other invest-
            ments. Because they are two-party contracts and because they may
            have terms of greater than     
 
18    PIMCO Funds: Multi-Manager Series
<PAGE>
 

            seven days, swap agreements may be considered to be illiquid in-
            vestments. Moreover, the Fund bears the risk of loss of the amount
            expected to be received under a swap agreement in the event of the
            default or bankruptcy of a swap agreement counterparty. The Fund
            will enter into swap agreements only with counterparties that meet
            certain standards for creditworthiness (generally, such
            counterparties would have to be eligible counterparties under the
            terms of the Fund's repurchase agreement guidelines). The swaps
            market is a relatively new market and is largely unregulated. It
            is possible that developments in the swaps market, including po-
            tential government regulation, could adversely affect the Fund's
            ability to terminate existing swap agreements or to realize
            amounts to be received under such agreements.
 
            Futures Contracts and Options on Futures Contracts Certain Funds
            may enter into futures contracts and options thereon. These Funds
            may engage in such futures transactions as an adjunct to their se-
            curities activities.
               There are several risks associated with the use of futures and
            futures options for hedging purposes. There can be no guarantee
            that there will be a correlation between price movements in the
            hedging vehicle and in the portfolio securities being hedged. An
            incorrect correlation could result in a loss on both the hedged
            securities in a Fund and the hedging vehicle, so that the portfo-
            lio return might have been greater had hedging not been attempted.
            There can be no assurance that a liquid market will exist at a
            time when a Fund seeks to close out a futures contract or a
            futures option position. Most futures exchanges and boards of
            trade limit the amount of fluctuation permitted in futures con-
            tract prices during a single day; once the daily limit has been
            reached on a particular contract, no trades may be made that day
            at a price beyond that limit. In addition, certain of these in-
            struments are relatively new and without a significant trading
            history. As a result, there is no assurance that an active second-
            ary market will develop or continue to exist. Lack of a liquid
            market for any reason may prevent a Fund from liquidating an unfa-
            vorable position, and the Fund would remain obligated to meet mar-
            gin requirements until the position is closed.
 
            Index Futures The Renaissance, Tax-Efficient Equity and Innovation
            Funds may purchase and sell futures contracts on various securi-
            ties indexes ("Index Futures") and related options for hedging
            purposes and for investment purposes. A Fund's purchase and sale
            of Index Futures is limited to contracts and exchanges which have
            been approved by the Commodity Futures Trading Commission
            ("CFTC").
               A Fund may close open positions on the futures exchanges on
            which Index Futures are traded at any time up to and including the
            expiration day. All positions which remain open at the close of
            the last business day of the contract's life are required to set-
            tle on the next business day (based upon the value of the relevant
            index on the expiration day), with settlement made with the appro-
            priate clearing house. Because the specific procedures for trading
            foreign stock Index Futures on futures exchanges are still under
            development, additional or different margin requirements as well
            as settlement procedures may be applicable to foreign stock Index
            Futures at the time a Fund purchases such instruments.
               Positions in Index Futures may be closed out by a Fund only on
            the futures exchange upon which the Index Futures are then traded.
            There can be no assurance that a liquid market will exist for any
            particular contract at any particular time. Also, the price of In-
            dex Futures may not correlate perfectly with movement in the rele-
            vant index due to certain market distortions. First, all partici-
            pants in the futures market are subject to margin deposit and
            maintenance requirements. Rather than meeting additional margin
            deposit requirements, investors may close futures contracts
            through offsetting transactions which could distort the normal re-
            lationship between the index and futures markets. Second, the de-
            posit requirements in the futures market are less onerous than
            margin requirements in the securities market, and as a result, the
            futures market may attract more speculators than does the securi-
            ties market. Increased participation by speculators in the futures
            market may also cause temporary price distortions. In addition,
            trading hours for foreign stock Index Futures may not correspond
            perfectly to hours of trading on the foreign exchange to which a
            particular foreign stock Index Future relates. This may result in
            a disparity between the price of Index Futures and the value of
            the relevant index due to the lack of continuous arbitrage between
            the Index Futures price and the value of the underlying index.
               The Funds may only enter into futures contracts or futures op-
            tions which are standardized and traded on a U.S. or foreign ex-
            change or board of trade, or similar entity, or quoted on an auto-
            mated quotation system. Each Fund may
 

                                                               
                                                            Prospectus        19
<PAGE>
 

             use financial futures contracts and related options only for "bona
             fide hedging" purposes, as such term is defined in applicable reg-
             ulations of the CFTC, or, with respect to positions in financial
             futures and related options that do not qualify as "bona fide
             hedging" positions, may enter such positions only to the extent
             that aggregate initial margin deposits plus premiums paid by it
             for open futures option positions, less the amount by which any
             such positions are "in-the-money," would not exceed 5% of the
             Fund's net assets.
 
 
Loans of     For the purpose of achieving income, each Fund may lend its port-
Portfolio    folio securities to brokers, dealers, and other financial institu-
Securities   tions, provided:
                (i) the loan is secured continuously by collateral consisting
                    of U.S. Government securities, cash or cash equivalents
                    (negotiable certificates of deposit, bankers' acceptances
                    or letters of credit) maintained on a daily mark-to-market
                    basis in an amount at least equal to the current market
                    value of the securities loaned;
                (ii) the Fund may at any time call the loan and obtain the
                     return of the securities loaned;
                (iii) the Fund will receive any interest or dividends paid on
                      the loaned securities; and
                (iv) the aggregate market value of securities loaned will not
                     at any time exceed the Fund's limitation on lending its
                     portfolio securities.
             Each Fund's performance will continue to reflect changes in the
             value of the securities loaned and will also reflect the receipt
             of either interest, through investment of cash collateral by the
             Fund in permissible investments, or a fee, if the collateral is
             U.S. Government securities. Securities lending involves the risk
             of loss of rights in the collateral or delay in recovery of the
             collateral should the borrower fail to return the security loaned
             or become insolvent. The Funds may pay lending fees to the party
             arranging the loan.
 
 
Short Sales  Each Fund may from time to time make short sales involving securi-
             ties held in the Fund's portfolio or which the Fund has the right
             to acquire without the payment of further consideration. For these
             purposes, a Fund may also hold or have the right to acquire secu-
             rities which, without the payment of any further consideration,
             are convertible into or exchangeable for the securities sold
             short. Short sales expose the Fund to the risk that it will be re-
             quired to acquire, convert or exchange securities to cover its
             short position at a time when the securities sold short have ap-
             preciated in value, thus resulting in a loss to the Fund.
 
 
When-        Each Fund may purchase securities which it is eligible to purchase
Issued,      on a when-issued basis, may purchase and sell such securities for
Delayed      delayed delivery and may make contracts to purchase such securi-
Delivery     ties for a fixed price at a future date beyond normal settlement
And          time (forward commitments). When-issued transactions, delayed de-
Forward      livery purchases and forward commitments involve a risk of loss if
Commitment   the value of the securities declines prior to the settlement date,
Transactions which risk is in addition to the risk of decline in the value of
             the Fund's other assets. Typically, no income accrues on securi-
             ties a Fund has committed to purchase prior to the time delivery
             of the securities is made, although a Fund may earn income on se-
             curities it has segregated.
 
 
Repurchase   For the purposes of maintaining liquidity and achieving income,
Agreements   each Fund may enter into repurchase agreements, which entail the
             purchase of a portfolio-eligible security from a bank or broker-
             dealer that agrees to repurchase the security at the Fund's cost
             plus interest within a specified time (normally one day). If the
             party agreeing to repurchase should default, as a result of bank-
             ruptcy or otherwise, the Fund will seek to sell the securities
             which it holds, which action could involve procedural costs or de-
             lays in addition to a loss on the securities if their value should
             fall below their repurchase price. Those Funds whose investment
             objectives do not include the earning of income will invest in re-
             purchase agreements only as a cash management technique with re-
             spect to that portion of the portfolio maintained in cash. Each
             Fund will limit its investment in repurchase agreements maturing
             in more than seven days consistent with the Fund's policy on in-
             vestment in illiquid securities.
   
20    PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
 
   
Reverse     A reverse repurchase agreement may for some purposes be considered
Repurchase  borrowing that involves the sale of a security by a Fund and its
Agreements  agreement to repurchase the instrument at a specified time and
and Other   price. The Fund will segregate assets determined to be liquid by
Borrowings  the Adviser or Sub-Adviser in accordance with procedures estab-
            lished by the Board of Trustees to cover its obligations under re-
            verse repurchase agreements. Reverse repurchase agreements will be
            subject to the Funds' limitations on borrowings. A Fund also may
            borrow money for investment purposes subject to any policies of
            the Fund currently described in this Prospectus or in the State-
            ment of Additional Information. Such a practice will result in
            leveraging of a Fund's assets. Leverage will tend to exaggerate
            the effect on net asset value of any increase or decrease in the
            value of a Fund's portfolio and may cause a Fund to liquidate
            portfolio positions when it would not be advantageous to do so.
    
Portfolio   The length of time a Fund has held a particular security is not
Turnover    generally a consideration in investment decisions. The investment
            policies of a Fund may lead to frequent changes in the Fund's in-
            vestments, particularly in periods of volatile market movements. A
            change in the securities held by a Fund is known as "portfolio
            turnover." High portfolio turnover (e.g., over 100%) involves cor-
            respondingly greater expenses to a Fund, including brokerage com-
            missions or dealer mark-ups and other transaction costs on the
            sale of securities and reinvestments in other securities. See "Man-
               
            agement of the Trust--Portfolio Transactions." Such sales may re-
            sult in realization of taxable capital gains (including short-term
            capital gains which generally are taxed to shareholders at ordi-
            nary income tax rates). See "Taxes." The portfolio turnover rates
            for the Funds (with the exception of the Tax-Efficient Equity
            Fund) were as follows for fiscal 1998 and 1997, respectively: Cap-
            ital Appreciation--75% and 87%; Mid-Cap Growth--66% and 82%; Eq-
            uity Income--45% and 45%; Renaissance--192% and 131%; Value--77%
            and 71%; and Innovation--100% and 80%. The annual portfolio turn-
            over rate for the Tax-Efficient Equity Fund is expected to be less
            than 40%. In connection with the change in Sub-Advisers of the Re-
            naissance and Innovation Funds from Columbus Circle to PIMCO Eq-
            uity Advisors, these Funds may experience increased turnover due
            to the differences, if any, between the portfolio management
            strategies of Columbus Circle and PIMCO Equity Advisors. See "Man-
            agement of the Trust--Sub-Advisers."     
 
 
   
Illiquid    Each Fund may invest in securities that are illiquid so long as no
Securities  more than 15% of the value of the Fund's net assets (taken at mar-
            ket value at the time of investment) would be invested in such se-
            curities. Certain illiquid securities may require pricing at fair
            value as determined in good faith under the supervision of the
            Board of Trustees. A Sub-Adviser may be subject to significant de-
            lays in disposing of illiquid securities, and transactions in il-
            liquid securities may entail registration expenses and other
            transaction costs that are higher than those for transactions in
            liquid securities.     
               
               The term "illiquid securities" for this purpose means securi-
            ties that cannot be disposed of within seven days in the ordinary
            course of business at approximately the amount at which a Fund has
            valued the securities. Illiquid securities are considered to in-
            clude, among other things, written over-the-counter options, secu-
            rities or other liquid assets being used as cover for such op-
            tions, repurchase agreements with maturities in excess of seven
            days, certain loan participation interests, fixed time deposits
            which are not subject to prepayment or provide for withdrawal pen-
            alties upon prepayment (other than overnight deposits), securities
            that are subject to legal or contractual restrictions on resale
            (such as privately placed debt securities), and other securities
            which legally or in the Adviser's or a Sub-Adviser's opinion may
            be deemed illiquid (not including securities issued pursuant to
            Rule 144A under the Securities Act of 1933 and certain commercial
            paper that the Adviser or a Sub-Adviser has determined to be liq-
            uid under procedures approved by the Board of Trustees).     
 
 
            
Credit and  All fixed income securities are subject to market risk and credit
Market Risk risk. Market risk relates to market-induced changes in a
of          security's value, usually as a result of changes in interest
FixedIncome rates. The value of a Fund's investments in fixed income securi-
Securities  ties will change as the general level of interest rates fluctuate.
            During periods of falling interest rates, the value of a Fund's
            fixed income securities generally rise. Conversely, during periods
            of rising interest rates, the value of a Fund's
 

                                                                
                                                             Prospectus       21
<PAGE>
 

            fixed income securities generally decline. Credit risk relates to
            the ability of the issuer to make payments of principal and inter-
            est.
 
 
Service     Many of the services provided to the Funds depend on the smooth
Systems --  functioning of computer systems. Many systems in use today cannot
Year 2000   distinguish between the year 1900 and the year 2000. Should any of
Problem     the service systems fail to process information properly, that
            could have an adverse impact on the Funds' operations and services
            provided to shareholders. The Adviser, Distributor, Shareholder
            Servicing and Transfer Agent, Custodian, and certain other service
            providers to the Funds have reported that each is working toward
            mitigating the risks associated with the so-called "year 2000
            problem." However, there can be no assurance that the problem will
            be corrected in all respects and that the Funds' operations and
            services provided to shareholders will not be adversely affected
            nor can there be any assurance that the year 2000 problem will not
            have an adverse effect on the entities whose securities are held
            by the Funds or on domestic or global equity markets or economies,
            generally.
 
"Funda-     The investment objective of each of the Renaissance, Tax-Efficient
mental"     Equity and Innovation Funds described in this Prospectus may be
Policies    changed by the Board of Trustees without shareholder approval. The
            investment objective of each other Fund is fundamental and may not
            be changed without shareholder approval by vote of a majority of
            the outstanding shares of that Fund. If there is a change in a
            Fund's investment objective, including a change approved by share-
            holder vote, shareholders should consider whether the Fund remains
            an appropriate investment in light of their then current financial
            position and needs.
 
            Performance Information
 
            From time to time the Trust may make available certain information
            about the performance of the Class D shares of some or all of the
            Funds. Information about a Fund's performance is based on that
            Fund's (or its predecessor's) record to a recent date and is not
            intended to indicate future performance.
               The total return of Class D shares of all Funds may be included
            in advertisements or other written material. When a Fund's total
            return is advertised with respect to its Class D shares, it will
            be calculated for the past year, the past five years, and the past
            ten years (or if the Fund has been offered for a period shorter
            than one, five or ten years, that period will be substituted)
            since the establishment of the Fund or its predecessor series of
            PIMCO Advisors Funds, as more fully described in the Statement of
            Additional Information. For periods prior to the initial offering
            date of Class D shares, total return presentations for the class
            will be based on the historical performance of an older class of
            the Fund (if any) restated, as necessary, to reflect that there
            are no sales charges associated with Class D shares. The older
            class to be used in each case is set forth in the Statement of Ad-
            ditional Information. For these purposes, the performance of the
            older class will also be restated to reflect any different operat-
            ing expenses (such as different administrative fees and/or 12b-
            1/servicing fee charges) associated with Class D shares. In cer-
            tain cases, such a restatement will result in Class D performance
            which is higher than if the performance of the older class were
            not restated to reflect the different Class D operating expenses.
            In such cases, the Trust's advertisements will also, to the extent
            appropriate, show the lower performance figure reflecting the ac-
            tual operating expenses incurred by the older class for periods
            prior to the initial offering date of Class D shares. Total return
            is measured by comparing the value of an investment in Class D
            shares of the Fund at the beginning of the relevant period to the
            redemption value of the investment in Class D shares of the Fund
            at the end of the period (assuming immediate reinvestment of any
            dividends or capital gains distributions at net asset value). To-
            tal return may be advertised using alternative methods that re-
            flect all elements of return, but that may be adjusted to reflect
            the cumulative impact of alternative fee and expense structures,
            such as the currently effective advisory and administrative fees
            for Class D shares of the Funds.
 

22   PIMCO Funds: Multi-Manager Series 
<PAGE>
 

               Quotations of yield for Class D shares of a Fund will be based
            on the investment income per share (as defined by the Securities
            and Exchange Commission) during a particular 30-day (or one-month)
            period (including dividends and interest), less expenses accrued
            during the period ("net investment income"), and will be computed
            by dividing net investment income by the maximum public offering
            price per Class D share on the last day of the period.
               The Funds may also provide current distribution information to
            its shareholders in shareholder reports or other shareholder com-
            munications, or in certain types of sales literature provided to
            prospective investors. Current distribution information for Class
            D shares of a Fund will be based on distributions for a specified
            period (i.e., total dividends from net investment income), divided
            by the net asset value per Class D share on the last day of the
            period and annualized. The rate of current distributions does not
            reflect deductions for unrealized losses from transactions in de-
            rivative instruments such as options and futures, which may reduce
            total return. Current distribution rates differ from standardized
            yield rates in that they represent what Class D shares of a Fund
            have declared and paid to shareholders as of the end of a speci-
            fied period rather than the Fund's actual net investment income
            for that period.
               
               The Adviser and each Sub-Adviser may also report to sharehold-
            ers or to the public in advertisements concerning its performance
            as adviser to clients other than the Funds, and on its comparative
            performance or standing in relation to other money managers. Such
            comparative information may be compiled or provided by independent
            ratings services or by news organizations. Any performance infor-
            mation, whether related to the Funds, the Adviser or the Sub-Ad-
            visers, should be considered in light of the Funds' investment ob-
            jectives and policies, characteristics and quality of the Funds,
            and the market conditions during the time period indicated, and
            should not be considered to be representative of what may be
            achieved in the future.     
               Investment results of the Funds will fluctuate over time, and
            any representation of the Funds' total return or yield for any
            prior period should not be considered as a representation of what
            an investor's total return or yield may be in any future period.
 
            How to Buy Shares
 
            Class D shares of each Fund are continuously offered through fi-
            nancial service firms, such as broker-dealers or registered in-
            vestment advisers, with which the Trust's principal underwriter,
            PIMCO Funds Distributors LLC (the "Distributor"), has an agreement
            for the use of the Funds in particular investment products, pro-
            grams or accounts for which a fee may be charged. See "Financial
            Service Firms" below.
               You may purchase Class D shares only through your financial
            service firm. In connection with purchases, your financial service
            firm is responsible for forwarding all necessary documentation to
            the Distributor, and may charge you for such services. Investors
            who wish to purchase shares of the Funds directly from the Trust
            or the Distributor should inquire as to the other classes of
            shares. See "Description of the Trust--Multiple Classes of
            Shares."
               
               Class D shares may be purchased at a price equal to their net
            asset value per share next determined after receipt of an order.
            Purchase payments for Class D shares are fully invested at the net
            asset value next determined after acceptance of the trade. All
            purchase orders received by the Distributor from your financial
            service firm prior to the close of regular trading (normally 4:00
            p.m., Eastern time) on the New York Stock Exchange (the "Ex-
            change"), on a regular business day, are processed at that day's
            offering price. In addition, orders received by the Distributor
            from financial service firms after the offering price is deter-
            mined that day will receive such offering price if the orders were
            received by the firm from its customer prior to such determination
            and were transmitted to and received by the Distributor prior to
            its close of business that day (normally 7:00 p.m., Eastern time).
            Purchase orders received on other than a regular business day will
            be executed on the next succeeding regular business day.     
               The Distributor, in its sole discretion, may accept or reject
            any order for purchase of Fund shares. The sale of shares will be
            suspended during any period in which the Exchange is closed for
            other than weekends or holidays, or if permitted by the rules of
            the Securities and Exchange Commission, when trading on the Ex-
            change is restricted or
 

                                                               
                                                            Prospectus       23
<PAGE>
 

            during an emergency which makes it impracticable for the Funds to
            dispose of their securities or to determine fairly the value of
            their net assets, or during any other period as permitted by the
            Securities and Exchange Commission for the protection of invest-
            ors.
               Class D shares of the Funds will be held in your account with
            your financial service firm and, generally, your firm will hold
            your Class D shares in nominee or street name as your agent. Ac-
            cordingly, in most cases, the Trust's transfer agent will have no
            information with respect to or control over accounts of specific
            Class D shareholders and you may obtain information about your ac-
            counts only through your financial service firm. In certain cir-
            cumstances, your firm may arrange to have your shares held in your
            own name or you may subsequently become a holder of record for
            some other reason (for instance, if you terminate your relation-
            ship with your firm). In such circumstances, please contact the
            Distributor at 1-888-87-PIMCO for information about your account.
            If you wish to invest in the Funds through your own account with
            the Trust or the Distributor, please inquire as to the other clas-
            ses of shares of the Funds. See "Description of the Trust--Multi-
            ple Classes of Shares." In the interest of economy and conve-
            nience, certificates for Class D shares will not be issued.
 
 
Financial   Broker-dealers, registered investment advisers and other financial
Service     service firms provide varying investment products, programs or ac-
Firms       counts, pursuant to arrangements with the Distributor, through
            which their clients may purchase and redeem Class D shares of the
            Funds. Firms will generally provide or arrange for the provision
            of some or all of the shareholder servicing and account mainte-
            nance services required by your account, including, without limi-
            tation, transfers of registration and dividend payee changes; and
            may perform functions such as generation of confirmation state-
            ments and disbursement of cash dividends. Firms may also arrange
            with their clients for other investment or administrative servic-
            es. Your firm may independently establish and charge you transac-
            tion fees and/or other additional amounts for such services, which
            charges could reduce your investment returns on Class D shares of
            the Funds.
               Your financial service firm may have omnibus accounts and simi-
            lar arrangements with the Trust and may be paid for providing sub-
            transfer agency and other services. A firm may be paid for its
            services directly or indirectly by the Funds, the Adviser or an
            affiliate (normally not to exceed an annual rate of 0.35% of a
            Fund's average daily net assets attributable to its Class D shares
            and purchased through such firm for its clients). Your firm may
            establish various minimum investment requirements for Class D
            shares of the Funds and may also establish certain privileges with
            respect to purchases, redemptions and exchanges of Class D shares
            or the reinvestment of dividends.
               This Prospectus should be read in connection with your firm's
            materials regarding its fees and services.
 
            Exchange Privilege
 
            A shareholder may exchange Class D shares of any Fund for Class D
            shares of any other Fund in an account with identical registration
            on the basis of their respective net asset values. Class D shares
            of each Fund may also be exchanged for Class D shares of certain
            series of PIMCO Funds: Pacific Investment Management Series, an
            affiliated mutual fund family composed primarily of fixed income
            portfolios managed by Pacific Investment Management Company, an
            affiliate of the Adviser. There are currently no exchange fees or
            charges imposed by the Trust, although your financial service firm
            may impose various fees and charges, investment minimums and other
            requirements with respect to exchanges. Please contact your finan-
            cial service firm for details. An exchange will constitute a tax-
            able sale for federal income tax purposes.
               The Trust reserves the right to refuse exchange purchases if,
            in the judgment of the Adviser, the purchase would adversely af-
            fect a Fund and its shareholders. In particular, a pattern of ex-
            changes characteristic of "market-timing" strategies may be deemed
            by the Adviser to be detrimental to the Trust or a particular
            Fund. Currently, the Trust limits the number of "round trip" ex-
            changes an investor may make. An investor makes a "round trip" ex-
            change when the investor purchases shares of a particular Fund,
            subsequently exchanges those shares for shares of a different Fund
 

24   PIMCO Funds: Multi-Manager Series
<PAGE>
 
            and then exchanges back into the originally purchased Fund. The
            Trust has the right to refuse any exchange for any investor who
            completes (by making the exchange back into the shares of the
            originally purchased Fund) more than six round trip exchanges in
            any twelve-month period. Although the Trust has no current inten-
            tion of terminating or modifying the exchange privilege other than
            as set forth in the preceding sentence, it reserves the right to
            do so at any time. Except as otherwise permitted by Securities and
            Exchange Commission regulations, the Trust will give 60 days' ad-
            vance notice to your financial service firm of any termination or
            material modification of the exchange privilege. For further in-
            formation about exchange privileges, please contact your financial
            service firm.
 
            How to Redeem
 
            Class D shares may be redeemed through your financial service firm
            on any day the Exchange is open. Shares are redeemed at their net
            asset value next determined after a proper redemption request has
            been received from your firm. There is no charge by the Trust or
            the Distributor with respect to a redemption, although your finan-
            cial service firm may charge you for its services in processing
            your redemption request. Please contact your firm for details. If
            you are the holder of record of your Class D shares, you may con-
            tact the Distributor at 1-888-87-PIMCO for information regarding
            how to redeem your shares directly from the Trust.
               Your financial service firm is obligated to transmit your re-
            demption orders to the Distributor promptly and is responsible for
            ensuring that your redemption request is in proper form. Requests
            for redemption received by financial service firms prior to the
            close of regular trading (normally 4:00 p.m., Eastern time) on the
            Exchange on a regular business day and received by the Distributor
            prior to the close of the Distributor's business day will be con-
            firmed at the net asset value effective as of the closing of the
            Exchange on that day. Your financial service firm will be respon-
            sible for furnishing all necessary documentation to the Distribu-
            tor or the Trust's transfer agent and may charge you for its serv-
            ices. Redemption proceeds will be forwarded to your financial
            service firm as promptly as possible and in any event within seven
            days after the redemption request is received by the Distributor
            in good order. Under unusual circumstances, the Trust may suspend
            redemptions or postpone payment for more than seven days, as per-
            mitted by federal securities law.
 
 
Redemptions The Trust agrees to redeem shares of each Fund solely in cash up
In Kind     to the lesser of $250,000 or 1% of the Fund's net assets during
            any 90-day period for any one shareholder. In consideration of the
            best interests of the remaining shareholders, the Trust reserves
            the right to pay any redemption proceeds exceeding this amount in
            whole or in part
            by a distribution in kind of securities held by a Fund in lieu of
            cash. Except for Funds with a tax-efficient management strategy,
            it is highly unlikely that shares would ever be redeemed in kind.
            When shares are redeemed in kind, the redeeming shareholder should
            expect to incur transaction costs upon the disposition of the se-
            curities received in the distribution.
 
            Distributor
 
            PIMCO Funds Distributors LLC (the "Distributor"), a wholly owned
            subsidiary of the Adviser, is the principal underwriter of the
            Trust's shares. Pursuant to a Distribution Agreement with the
            Trust, with respect to each Fund's Class D shares, the Distributor
            may bear various expenses, including the cost of printing and
            mailing prospectuses to persons other than current shareholders.
            The Distributor, located at 2187 Atlantic Street, Stamford, Con-
            necticut 06902, is a broker-dealer registered with the SEC.
 
                                                                
                                                             Prospectus  25     
                                                                           
<PAGE>
 
 
            How Net Asset Value Is Determined
 
            The net asset value of Class D shares of each Fund of the Trust
            will be determined once on each day on which the Exchange is open
            (a "Business Day"), as of the close of regular trading (normally
            4:00 p.m., Eastern time) on the Exchange. Net asset value will not
            be determined on days on which the Exchange is closed.
               Portfolio securities and other assets for which market quota-
            tions are readily available are stated at market value. Fixed in-
            come securities are normally valued on the basis of quotations ob-
            tained from brokers and dealers or pricing services, which take
            into account appropriate factors such as institutional-sized trad-
            ing in similar groups of securities, yield, quality, coupon rate,
            maturity, type of issue, trading characteristics, and other market
            data. Certain fixed income securities for which daily market quo-
            tations are not readily available may be valued, pursuant to
            guidelines established by the Board of Trustees, with reference to
            fixed income securities whose prices are more readily obtainable
            and whose durations are comparable to the securities being valued.
            Short-term investments having a maturity of 60 days or less are
            valued at amortized cost, when the Board of Trustees determines
            that amortized cost is their fair value. Exchange- traded options,
            futures and options on futures are valued at the settlement price
            as determined by the appropriate clearing corporation. All other
            securities and assets are valued at their fair value as determined
            in good faith by the Trustees or by persons acting at their direc-
            tion.
               
               Quotations of foreign securities in foreign currency are con-
            verted to U.S. dollar equivalents using foreign exchange quota-
            tions received from independent dealers. Under the Trust's proce-
            dures, the prices of foreign securities are determined using in-
            formation derived from pricing services and other sources. Infor-
            mation that becomes known to the Trust or its agents after the
            time that net asset value is calculated on any Business Day may be
            assessed in determining net asset value per share after the time
            of receipt of the information, but will not be used to retroac-
            tively adjust the price of the security so determined earlier or
            on a prior day. Events affecting the values of portfolio securi-
            ties that occur between the time their prices are determined and
            the close of regular trading on the Exchange (normally 4:00 p.m.,
            Eastern time) may not be reflected in the calculation of net asset
            value. If events materially affecting the value of such securities
            occur during such period, then these securities may be valued at
            fair value as determined by the Adviser or a Sub-Adviser and ap-
            proved in good faith by the Board of Trustees.     
               Each Fund's liabilities are allocated among its classes. The
            total of such liabilities allocated to a class plus that class's
            distribution and/or servicing fees and any other expenses spe-
            cially allocated to that class are then deducted from the class's
            proportionate interest in the Fund's assets, and the resulting
            amount for each class is divided by the number of shares of that
            class outstanding to produce the class's "net asset value" per
            share. Generally, for Funds that pay income dividends, those divi-
            dends are expected to differ over time by approximately the amount
            of the expense accrual differential between a particular Fund's
            classes.
 
            Distributions
               
            Shares begin earning dividends on the day after the date that
            funds are received by the Trust for the purchase of Class D
            shares. Net investment income from interest and dividends, if any,
            will be declared and paid quarterly to shareholders of record by
            the Equity Income, Renaissance and Value Funds. Net investment
            income from interest and dividends, if any, will be declared and
            paid at least annually to shareholders of record by the Capital
            Appreciation, Mid-Cap Growth, Tax-Efficient Equity and Innovation
            Funds. Any net capital gains from the sale of portfolio securities
            will be distributed no less frequently than once annually. Net
            short-term capital gains may be paid more frequently.     
               All dividends and/or distributions will be paid in the form of
            additional Class D shares of the Fund to which the dividends
            and/or distributions relate or, at the election of the sharehold-
            er, of another Fund or other series of the Trust or of PIMCO
            Funds: Pacific Investment Management Series as described below, at
            net asset value, unless the share-
 
26 PIMCO Funds: Multi-Manager Series
<PAGE>
 
                                                          
                                                          
 
            holder elects to receive cash (either paid to shareholders di-
            rectly or credited to their account with their financial services
            firm). If a shareholder has elected to receive dividends and/or
            capital gain distributions in cash and the postal or other deliv-
            ery service is unable to deliver checks to the shareholder's ad-
            dress of record, such shareholder's distributions will automati-
            cally be invested in the Money Market Fund of PIMCO Funds: Pacific
            Investment Management Series, until such shareholder is located.
            Dividends paid by each Fund with respect to each class of shares
            are calculated in the same manner and at the same time.

               Your financial service firm may offer a program pursuant to
            which you may elect to invest dividends and/or distributions paid
            by any Fund in Class D shares of any other Fund or series of PIMCO
            Funds: Pacific Investment Management Series which offers Class D
            shares. Please contact your financial service firm for details.
 
            Taxes
 
            Each Fund intends to qualify as a regulated investment company an-
            nually and to elect to be treated as a regulated investment com-
            pany under the Internal Revenue Code of 1986, as amended (the
            "Code"). As such, a Fund generally will not pay federal income tax
            on the income and gains it pays as dividends to its shareholders.
            In order to avoid a 4% federal excise tax, each Fund intends to
            distribute each year substantially all of its net income and
            gains.
               
               Shareholders subject to U.S. federal income tax will be subject
            to tax on dividends received from a Fund, regardless of whether
            received in cash or reinvested in additional shares. Distributions
            received by tax-exempt shareholders generally will not be subject
            to federal income tax to the extent permitted under applicable tax
            law. All shareholders must treat dividends, other than capital
            gain dividends, exempt-interest dividends, if any, and dividends
            that represent a return of capital to shareholders, as ordinary
            income. In particular, distributions derived from short-term gains
            will be treated as ordinary income. Dividends designated by a Fund
            as capital gain dividends derived from the Fund's net capital
            gains (that is, the excess of its net long-term capital gains over
            its net short-term capital losses) are taxable to shareholders as
            long-term capital gain (generally subject to a 20% tax rate for
            shareholders who are individuals) except as provided by an appli-
            cable tax exemption. Any distributions that are not from a Fund's
            net investment income or net capital gain generally may be charac-
            terized as a return of capital to shareholders or, in some cases,
            as capital gain. Certain dividends declared in October, November
            or December of a calendar year are taxable to shareholders (who
            otherwise are subject to tax on dividends) as though received on
            December 31 of that year if paid to shareholders during January of
            the following calendar year. Each Fund will advise shareholders
            annually of the amount and nature of the dividends paid to them.
            Dividends, if any, derived from interest on certain U.S. Govern-
            ment securities may be exempt from state and local taxes, although
            interest on mortgage-backed U.S. Government securities is gener-
            ally not so exempt. While the Tax-Efficient Equity Fund seeks to
            minimize taxable distributions, the Fund may be expected to earn
            and distribute taxable income and may also be expected to realize
            and distribute capital gains from time to time.     

               Current federal tax law requires the holder of a U.S. Treasury
            or other fixed income zero-coupon security to accrue as income
            each year a portion of the discount at which the security was pur-
            chased, even though the holder receives no interest payment in
            cash on the security during the year. In addition, pay-in-kind se-
            curities will give rise to income which is required to be distrib-
            uted and is taxable even though the Fund holding the security re-
            ceives no interest payment in cash on the security during the
            year. Also, a portion of the yield on certain high yield securi-
            ties (including certain pay-in-kind securities) issued after July
            10, 1989 may be treated as dividends. Accordingly, each Fund that
            holds the foregoing kinds of securities may be required to pay out
            as an income distribution each year an amount which is greater
            than the total amount of cash interest the Fund actually received.
            Such distributions may be made from the cash assets of the Fund or
            by liquidation of portfolio securities, if necessary. The Fund may
            realize gains or losses from such liquidations. In the event the
            Fund realizes net capital gains from such transactions, its share-
            holders may receive a larger capital gain distribution, if any,
            than they would in the absence of such transactions.
 
                                                                
                                                             Prospectus  27     
<PAGE>
 

               
               Taxable shareholders should note that the timing of their in-
            vestment or redemptions could have undesirable tax consequences.
            Dividends and distributions on a Fund's shares are generally sub-
            ject to federal income tax as described herein to the extent they
            do not exceed the Fund's realized income and gains, even though
            such dividends and distributions may economically represent a re-
            turn of a particular shareholder's investment. Such distributions
            are likely to occur in respect of shares purchased at a time when
            the Fund's net asset value reflects gains that are either
            unrealized or realized but not distributed. Such realized gains
            may be required to be distributed even when a Fund's net asset
            value also reflects unrealized losses.     

               The preceding discussion relates only to federal income tax;
            the consequences under other tax laws may differ. Shareholders
            should consult their tax advisers as to the possible application
            of foreign, state and local income tax laws to Trust dividends and
            capital gain distributions. For additional information relating to
            the tax aspects of investing in a Fund, see the Statement of Addi-
            tional Information.
 
            Management of the Trust
 
            The business affairs of the Trust are managed under the direction
            of the Board of Trustees. Information about the Trustees and the
            Trust's executive officers may be found in the Statement of Addi-
            tional Information under the heading "Management of the Trust."
 
Investment  PIMCO Advisors serves as investment adviser to the Funds pursuant
Adviser     to an investment advisory agreement with the Trust. PIMCO Advisors
            is a Delaware limited partnership organized in 1987. PIMCO Advi-
            sors provides investment management and advisory services to pri-
            vate accounts of institutional and individual clients and to mu-
            tual funds. Total assets under management by PIMCO Advisors and
            its subsidiary partnerships as of December 31, 1998 were approxi-
            mately $244.2 billion. The general partners of PIMCO Advisors are
            PIMCO Partners, G.P. and PIMCO Advisors Holdings L.P. ("PAH").
            PIMCO Partners, G.P. is a general partnership between PIMCO Hold-
            ing LLC, a Delaware limited liability company and an indirect
            wholly-owned subsidiary of Pacific Life Insurance Company, and
            PIMCO Partners LLC, a California limited liability company con-
            trolled by the current Managing Directors and two former Managing
            Directors of Pacific Investment Management Company. PIMCO Part-
            ners, G.P. is the sole general partner of PAH. PIMCO Advisors is
            governed by a Management Board, which exercises substantially all
            of the governance powers of the general partner and serves as the
            functional equivalent of a board of directors. PIMCO Advisors' ad-
            dress is 800 Newport Center Drive, Newport Beach, California
            92660. PIMCO Advisors is registered as an investment adviser with
            the Securities and Exchange Commission. PIMCO Advisors currently
            has seven subsidiary investment adviser partnerships, the follow-
            ing four of which manage one or more of the Funds: Cadence, Colum-
            bus Circle, NFJ and Parametric.

               Under the investment advisory agreement, PIMCO Advisors, sub-
            ject to the supervision of the Board of Trustees, is responsible
            for providing advice and guidance with respect to the Funds and
            for managing, either directly or through others selected by the
            Adviser, the investment of the Funds. PIMCO Advisors also fur-
            nishes to the Board of Trustees periodic reports on the investment
            performance of each Fund.
   
Sub-
Advisers
               
            Pursuant to portfolio management agreements, PIMCO Advisors em-
            ploys separate firms to serve as Sub-Advisers for the Funds, ex-
            cept that PIMCO Equity Advisors manages the Innovation Fund. Each
            such firm is an affiliate of PIMCO Advisors. PIMCO Advisors (and
            not the Funds or the Trust) compensates the Sub-Advisers it re-
            tains from its advisory fee. Each Sub-Adviser has full investment
            discretion and makes all determinations with respect to the
            investment of a Fund's assets and makes all determinations re-
            specting the purchase and sale of a Fund's securities and other
            investments. If a separate firm ceases to serve as Sub-Adviser for
            a Fund, PIMCO Advisors will either assume     
 
28  PIMCO Funds: Multi-Manager Series
<PAGE>
 
                                                            
                                                            
               
            full responsibility for the management of that Fund, or retain a
            new sub-adviser subject to the approval of the Trustees and, if
            required, the Fund's shareholders.     
               
            PIMCO Equity Advisors manages the Innovation Fund. PIMCO Equity
            Advisors is a division of PIMCO Advisors and provides investment
            management and advisory services primarily to equity-oriented mu-
            tual funds and other institutional clients. Information about
            PIMCO Advisors is provided above under "Investment Adviser." Prior
            to March 5, 1999, Columbus Circle served as Sub-Adviser for the
            Innovation Fund.     
               
               PIMCO Equity Advisors specializes in fundamental research that
            identifies characteristics of wealth creating businesses. The pri-
            mary investment style is quality growth within various market cap-
            italization ranges--small-cap, mid-cap and large-cap. PIMCO Equity
            Advisors seeks to identify quality growth companies using proprie-
            tary research and the execution of a disciplined investment proc-
            ess.     
               
               Dennis P. McKechnie, a Portfolio Manager at PIMCO Equity Advi-
            sors, has primary responsibility for the day-to-day portfolio man-
            agement of the Innovation Fund. He previously shared responsibil-
            ity for the Fund as a Portfolio Manager at Columbus Circle. Mr.
            McKechnie has 8 years' investment management experience. He re-
            ceived his bachelor's degree from Purdue University and his MBA
            from Columbia University. As discussed below under "Columbus Cir-
            cle," John K. Schneider is expected to assume primary responsibil-
            ity for the day-to-day portfolio management of the Renaissance
            Fund on or about May 7, 1999. Mr. Schneider previously served as a
            partner and Portfolio Manager of Schneider Capital Management. He
            has 13 years' investment management experience. He graduated from
            Lehigh University and is a Chartered Financial Analyst.     
 
            Cadence manages the Capital Appreciation and Mid-Cap Growth Funds
            (the "Cadence Funds"). Cadence is an investment management firm
            organized as a general partnership. Cadence has two partners:
            PIMCO Advisors as the supervisory partner, and Cadence Capital
            Management Inc. as the managing partner. Cadence Capital Manage-
            ment Corporation, the predecessor investment adviser to Cadence,
            commenced operations in 1988. Accounts managed by Cadence had com-
            bined assets as of December 31, 1998 of approximately $7.4 bil-
            lion. Cadence's address is Exchange Place, 53 State Street, Bos-
            ton, Massachusetts 02109. Cadence is registered as an investment
            adviser with the Securities and Exchange Commission.

               David B. Breed, William B. Bannick, Katherine A. Burdon and Pe-
            ter B. McManus are primarily responsible for the day-to-day man-
            agement of the Cadence Funds. Mr. Breed is a Managing Director,
            the Chief Executive Officer, and a founding partner of Cadence,
            and has 25 years' investment management experience. He has been
            the driving force in developing the firm's growth-oriented stock
            screening and selection process and has been with Cadence or its
            predecessor since its inception. Mr. Breed graduated from the Uni-
            versity of Massachusetts and received his MBA from the Wharton
            School of Business. He is a Chartered Financial Analyst. Mr.
            Bannick is a Managing Director and Executive Vice President of Ca-
            dence and has 13 years' investment management experience. He pre-
            viously served as Executive Vice President of George D. Bjurman &
            Associates and as Supervising Portfolio Manager of Trinity Invest-
            ment Management Corporation. Mr. Bannick joined the predecessor of
            Cadence in 1992. He graduated from the University of Massachusetts
            and received his MBA from Boston University. Mr. Bannick is
            a Chartered Financial Analyst. Ms. Burdon is a Managing Director
            and Portfolio Manager of Cadence and has 10 years' investment man-
            agement experience. She previously served as a Vice President and
            Portfolio Manager of The Boston Company. Ms. Burdon joined the
            predecessor of Cadence in 1993. She graduated from Stanford Uni-
            versity and received a Master of Science degree from Northeastern
            University. Ms. Burdon is a Chartered Financial Analyst and Certi-
            fied Public Accountant. Mr. McManus is Director of Fund Management
            of Cadence and has 21 years' investment management experience. He
            previously served as a Vice President of Bank of Boston. Mr. Mc-
            Manus joined Cadence in 1994. He graduated from the University of
            Massachusetts, and he is certified as a Financial Planner.
 
                                                                
                                                             Prospectus  29     
<PAGE>
 

               
            Columbus Circle manages the Renaissance Fund.* Columbus Circle is
            an investment management firm organized as a general partnership.
            Columbus Circle has two partners: PIMCO Advisors as the supervi-
            sory partner, and Columbus Circle Investors Management Inc. as the
            managing partner. The predecessors of Columbus Circle, including
            the Columbus Circle Investors Division of Thomson Advisory Group
            L.P. ("TAG"), commenced operations in 1975. Accounts managed by
            Columbus Circle had combined assets as of December 31, 1998 of ap-
            proximately $9.6 billion. Columbus Circle's address is Metro Cen-
            ter, One Station Place, 8th Floor, Stamford, Connecticut 06902.
            Columbus Circle is registered as an investment adviser with the
            Securities and Exchange Commission.     
               
               At the center of Columbus Circle's equity investment strategy
            is its theory of Positive Momentum & Positive Surprise. This the-
            ory asserts that a good company doing better than generally ex-
            pected will experience a rise in its stock price, and conversely,
            a company falling short of expectations will experience a drop in
            its stock price. Based on this theory, Columbus Circle attempts to
            manage the Renaissance Fund with a view to investing in growing
            companies that are surprising the market with business results
            that are better than anticipated.     
               
               Investment decisions made by Columbus Circle are generally made
            by one or more committees, although Clifford G. Fox has primary
            responsibility for the day-to-day management of the Renaissance
            Fund. Mr. Fox, a Managing Director of Columbus Circle, has 17
            years of investment management experience. He received his bache-
            lor's degree from the University of Pennsylvania and his MBA from
            New York University, and he is a Chartered Financial Analyst.     
 
            NFJ manages the Equity Income and Value Funds. NFJ is an invest-
            ment management firm organized as a general partnership. NFJ has
            two partners: PIMCO Advisors as the supervisory partner, and NFJ
            Management Inc. as the managing partner. NFJ Investment Group,
            Inc., the predecessor investment adviser to NFJ, commenced opera-
            tions in 1989. Accounts managed by NFJ had combined assets as of
            December 31, 1998 of approximately $2.4 billion. NFJ's address is
            2121 San Jacinto, Suite 1840, Dallas, Texas 75201. NFJ is regis-
            tered as an investment adviser with the Securities and Exchange
            Commission.

               Chris Najork and Benjamin Fischer are responsible for the day-
            to-day management of the Equity Income Fund. Mr. Najork is a Man-
            aging Director and a founding partner of NFJ and has 30 years' ex-
            perience encompassing equity research and portfolio management. He
            received his bachelor's degree and MBA from Southern Methodist
            University, and he is a Chartered Financial Analyst. Mr. Fischer
            is a Managing Director and a founding partner of NFJ and has 32
            years' experience encompassing equity research and portfolio man-
            agement. He received his bachelor's degree and JD from Oklahoma
            University and his MBA from New York University Graduate School of
            Business. He is a Chartered Financial Analyst. Messrs. Najork and
            Fischer and Paul A. Magnuson are primarily responsible for the
            day-to-day management of the Value Fund. Mr. Magnuson, a research
            analyst at NFJ, has 13 years' experience in equity research and
            portfolio management. He received his bachelor's degree in Finance
            from the University of Nebraska-Lincoln.
       
            Parametric manages the Tax-Efficient Equity Fund. Parametric is an
            investment management firm organized as a general partnership.
            Parametric has two partners: PIMCO Advisors as the supervisory
            partner, and Parametric Management Inc. as the managing partner.
            Parametric Portfolio Associates, Inc., the predecessor investment
            adviser to Parametric, commenced operations in 1987. Accounts man-
            aged by Parametric had combined assets as of December 31, 1998 of
            approximately $3.4 billion. Parametric's address is 7310 Columbia
            Center, 701 Fifth Avenue, Seattle, Washington 98104-7090. Paramet-
            ric is registered as an investment adviser with the Securities and
            Exchange Commission and as a commodity trading adviser with the
            CFTC.
               David Stein, Tom Seto and Cliff Quisenberry are primarily re-
            sponsible for the day-to-day management of the Tax-Efficient Eq-
            uity Fund. Mr. Stein is a Managing Director of Parametric and has
            been associated with Parametric since June 1996. He also directs
            research and product development for Parametric. Mr. Stein gradu-
            ated with bache-
            ------
               
            * On or about May 7, 1999, PIMCO Equity Advisors will assume full
              portfolio management responsibility for the Renaissance Fund
              under the terms of the Trust's investment advisory agreement
              with PIMCO Advisors. John K. Schneider is expected to assume
              responsibility for the day-to-day management of the Fund.
              Information about PIMCO Equity Advisors and Mr. Schneider is
              provided above under "PIMCO Equity Advisors."     
 
30  PIMCO Funds: Multi-Manager Series
<PAGE>
 
                                                              
                                                              
                  lor's and master's degrees in Applied Mathematics from the
              Univer-sity of Witwatersrand, South Africa, and received a Ph.D.
              in Ap-plied Mathematics from Harvard University. Prior to joining
              Para-metric, Mr. Stein served as the Director of Investment
              Research at GTE Investment Management, Director of Active Equity
              Strategies at the Vanguard Group, and Director of Quantitative
              Portfolio Manage-ment and Research at IBM. Mr. Seto is a Vice
              President of Paramet-ric and has 7 years of experience in managing
              structured equity portfolios. Prior to joining Parametric, he
              served as the Head of U.S. Equity Index Investments at Barclays
              Global Investors. Mr. Seto graduated from the University of
              Washington with a bachelor's degree in Electrical Engineering, and
              from the University of Chicago with an MBA in Finance. Mr.
              Quisenberry, a Vice President of Parametric, has 9 years'
              experience as a Portfolio Manager and has been with Parametric
              since 1994. He previously served as a Vice President and Portfolio
              Manager at Cutler & Co., and as a Security Analyst and Portfolio
              Manager at Fred Alger Management. Mr. Quisenberry graduated from
              Yale University with a bachelor's degree in Economics. He is a
              Chartered Financial Analyst.      

              Registration as an investment adviser with the Securities and Ex-
              change Commission does not involve supervision by the Securities
              and Exchange Commission over investment advice, and registration
              with the CFTC as a commodity trading adviser does not involve su-
              pervision by the CFTC over commodities trading. The portfolio man-
              agement agreements are not exclusive, and Columbus Circle, Ca-
              dence, NFJ and Parametric may provide, and currently are provid-
              ing, investment management services to other clients, including
              other investment companies. 
Fund
Administrator
              PIMCO Advisors also serves as administrator (the "Administrator")
              for the Funds' Class D shares pursuant to an administration agree-
              ment with the Trust. The Administrator provides or procures admin-
              istrative services for Class D shareholders of the Funds, which
              include clerical help and accounting, bookkeeping, internal audit
              services and certain other services required by the Funds, and
              preparation of reports to the Funds' shareholders and regulatory
              filings. The Administrator has retained Pacific Investment Manage-
              ment Company, its affiliate, to provide such services as sub-ad-
              ministrator. The Administrator and/or the sub-administrator may
              also retain other affiliates to provide certain of these services.
              In addition, the Administrator, at its own expense, arranges for
              the provision of legal, audit, custody, transfer agency (including
              sub-transfer agency and other administrative services) and other
              services necessary for the ordinary operation of the Funds, and is
              responsible for the costs of registration of the Trust's shares
              and the printing of prospectuses and shareholder reports for cur-
              rent shareholders.               

              PIMCO Advisors or an affiliate may pay financial service firms a
              portion of the Class D administration fees in return for the
              firms' services (normally not to exceed an annual rate of .35% of
              a Fund's average daily net assets attributable to Class D shares
              purchased through such firms). The Funds' administration agreement
              includes a plan for Class D shares that has been adopted in con-
              formity with the requirements set forth in Rule 12b-1 under the
              1940 Act. The plan provides that up to .25% per annum of the Class
              D administrative fees paid under the administration agreement may
              represent reimbursement for expenses in respect of activities that
              may be deemed to be primarily intended to result in the sale of
              Class D shares. The principal types of activities for which such
              payments may be made are services in connection with the distribu-
              tion of Class D shares and/or the provision of shareholder servic-
              es.                   

              The Funds (and not the Administrator) are responsible for the
              following expenses: (i) salaries and other compensation of any of
              the Trust's executive officers and employees who are not officers,
              directors, stockholders, or employees of PIMCO Advisors, Pacific
              Investment Management Company, or their subsidiaries or affili-
              ates; (ii) taxes and governmental fees; (iii) brokerage fees and
              commissions and other portfolio transaction expenses; (iv) the
              costs of borrowing money, including interest expenses; (v) fees
              and expenses of the Trustees who are not "interested persons" of
              the Adviser, any Sub-Adviser, or the Trust, and any counsel re-
              tained exclusively for their benefit; (vi) extraordinary expenses,
              including costs of litigation and indemnification expenses; (vii)
              expenses which are capitalized in accordance with generally ac-
              cepted accounting principles; and (viii) any expenses allocated or
              allocable to a specific class of shares, and may include certain
              other expenses as permitted by the Trust's Multiple Class Plan
              adopted pursuant to Rule 18f-3 under the 1940 Act, subject to re-
             view and approval by the Trustees.     
 
                                                                
                                                             Prospectus  31     
<PAGE>
 

 
 
               The Funds feature fixed advisory and administrative fees. For 
               providing or arranging for the provision of investment advisory 
               services to the Funds as described above, PIMCO Advisors receives
               monthly fees from each Fund at an annual rate based on the
               average daily net assets of the Fund as follows:
Advisory
and
Administrative
Fees
 
 
<TABLE>   
<CAPTION>
                                      Advisory
              Fund                    Fee Rate
              -----------------------------
              <S>                     <C>
              Capital Appreciation,
               Mid-Cap Growth,
               Equity Income, Value
               and Tax-Efficient
               Equity Funds           .45%
               -----------------------------
              Renaissance Fund        .60%
              -----------------------------
              Innovation Fund         .65%
</TABLE>    
 
 
                  For providing or procuring administrative services to the
               Funds as described above, the Administrator receives monthly fees
               from each Fund at an annual rate based on the average daily net
               assets attributable to the Fund's Class D shares as follows:
 
 
<TABLE>
<CAPTION>
                         Administrative
                         Fee Rate*
                 ----------------------
              <S>        <C>
              All Funds  .65%
</TABLE>
 
               * As described under "Fund Administrator," the administration
               agreement includes a plan adopted in conformity with Rule 12b-1
               which provides for the payment of up to .25% of the .65% Adminis-
               trative Fee Rate as reimbursement for expenses in respect of ac-
               tivities that may be deemed to be primarily intended to result in
               the sale of Class D shares. The "Annual Fund Operating Expenses"
               table on page 4 of this Prospectus shows the .65% Administrative
               Fee Rate under two separate columns entitled "Administrative
               Fees" (.40%) and "12b-1 (Service) Fees" (.25%).
 
                  The investment advisory, administration and sub-administration
               agreements for the Funds may be terminated by the Trustees, or by
               PIMCO Advisors or Pacific Investment Management Company (as the
               case may be) on 60 days' written notice. In addition, the invest-
               ment advisory agreement may be terminated with regard to the Re-
               naissance and Innovation Funds by a majority of the Trustees that
               are not interested persons of the Trust, PIMCO Advisors or
               Pacific Investment Management Company (as the case may be) on 60
               days' written notice. Following their initial terms, the
               agreements will continue from year-to-year if approved by the
               Trustees.    

                  Pursuant to the portfolio management agreements between the
               Adviser and the Sub-Advisers listed below, PIMCO Advisors (and
               not the Funds or the Trust) pays each Sub-Adviser a fee based on
               a a percentage of the average daily net assets of the noted Funds
               as follows: Cadence--.35% for the Capital Appreciation Fund and
               .35% for the Mid-Cap Growth Fund; Columbus Circle--.38% for the
               Renais-sance Fund; NFJ--.35% for the Equity Income Fund and .35%
               for the Value Fund; and Parametric--.35% for the Tax-Efficient
               Equity Fund. PIMCO Advisors does not retain a separate firm to
               serve as Sub-Adviser for the Innovation Fund, and retains all of
               the advi-sory fees it earns from that Fund.     
 
Portfolio     
Transactions   The Adviser or, pursuant to the portfolio management agreements,
               a Sub-Adviser, places orders for the purchase and sale of
               portfolio investments for a Fund's accounts with brokers or
               dealers selected by it in its discretion. In effecting purchases
               and sales of port-folio securities for the accounts of the Funds,
               the Adviser and the Sub-Advisers will seek the best price and
               execution of the Fund's orders. In doing so, a Fund may pay
               higher commission rates than the lowest available when the
               Adviser or Sub-Adviser believes it is reasonable to do so in
               light of the value of the brokerage and research services
               provided by the broker effecting the trans-action. The Adviser
               and Sub-Advisers also may consider sales of shares of the Trust
               as a factor in the selection of broker-dealers to execute
               portfolio transactions for the Trust.     
 
32  PIMCO Funds: Multi-Manager Series
<PAGE>
 
                                                              
                                                              
                  
                  Some securities considered for investment by the Funds may
               also be appropriate for other clients served by the Adviser or
               the Sub-Advisers. If a purchase or sale of securities consistent
               with the investment policies of a Fund and one or more of these
               clients is considered at or about the same time, transactions in
               such securities will be allocated among the Fund and clients in
               a manner deemed fair and reasonable by the Adviser or Sub-
               Adviser. Particularly when investing in less liquid or illiquid
               securities of smaller capitalization companies, such allocation
               may take into account the asset size of a Fund in determining
               whether the allocation of an investment is suitable. As a
               result, larger Funds may become more concentrated in more liquid
               securities than smaller Funds or private accounts of the Adviser
               or a Sub-Adviser pursuing a small capitalization investment
               strategy, which could adversely affect performance. The Adviser
               or a Sub-Adviser may aggregate orders for the Funds with
               simultaneous transactions entered into on behalf of its other
               clients so long as price and transaction expense are averaged
               either for the particular transaction or for that day.     
 
               Description of the Trust
 
Capitalization
               The Trust was organized as a Massachusetts business trust on Au-
               gust 24, 1990, and currently consists of twenty-eight portfolios
               that are operational, seven of which are described in this Pro-
               spectus. Other portfolios may be offered by means of a separate
               prospectus. The Board of Trustees may establish additional
               portfolios in the future. The capitalization of the Trust
               consists of an unlimited number of shares of beneficial interest.
               When issued, shares of the Trust are fully paid, non-assessable
               and freely transferable.

                     Under Massachusetts law, shareholders could, under certain
               circumstances, be held liable for the obligations of the Trust.
               However, the Second Amended and Restated Agreement and
               Declaration of Trust (the "Declaration of Trust") of the Trust
               disclaims share-holder liability for acts or obligations of the
               Trust and requires that notice of such disclaimer be given in
               each agreement, obligation or instrument entered into or
               executed by the Trust or the Trustees. The Declaration of Trust
               also provides for indemnification out of a Fund's property for
               all loss and expense of any shareholder of that Fund held liable
               on account of being or having been a shareholder. Thus, the risk
               of a shareholder incurring financial loss on account of
               shareholder liability is limited to circumstances in which such
               disclaimer is inoperative or the Fund of which he or she is or
               was a shareholder is unable to meet its obligations, and thus
               should be considered remote.
 
Multiple
Classes of     In addition to Class D shares, certain Funds also offer up to 
Shares         five additional classes of shares, Class A, Class B, Class C, 
               Instutional Class and Administrative Class shares, through
               separate prospectuses. This Prospectus relates only to Class D
               shares of the Funds. Unlike Class D shares, which may be
               purchased only through financial service firms, the other classes
               may be purchased directly from the Trust and/or the Distributor.
               The other classes may be subject to sales charges and different
               levels of operating expenses than Class D shares. As a result of
               different charges and expense levels, the other five classes are
               expected to achieve different investment returns than Class D
               shares. Share-holders of a particular class may also receive
               additional services or services different from those received by
               the other classes. To obtain more information about Class A,
               Class B and Class C shares, please call the Distributor at 1-800-
               426-0107. To obtain more information about Institutional Class
               and Administrative Class shares, please call 1-800-927-4648.

                  Each class of shares of each Fund represents interests in the
               assets of that Fund, and each class has identical dividend,
               liquidation and other rights and the same terms and conditions,
               except that expenses related to the distribution and shareholder
               servicing of a particular class of shares are borne solely by
               such class and each class may, at the Trustees' discretion, also
               pay a different share of other expenses, not including advisory
               or custodial fees or other expenses related to the management of
               the Trust's assets, if these expenses are actually incurred in a
               different amount by that class, or if the class receives
               services of a different kind or to a different degree than the
               other classes. All other expenses are allocated to each class on
               the basis of the net asset value of that class in relation to the
               net asset value of the particular Fund.
 
                                                                
                                                             Prospectus  33     
<PAGE>
 

 
Voting      Each class of shares of each Fund has identical voting rights, ex-
            cept that each class of shares has exclusive voting rights on any
            matter submitted to shareholders that relates solely to that
            class, and has separate voting rights on any matter submitted to
            shareholders in which the interests of one class differ from the
            interests of any other class. Each class of shares has exclusive
            voting rights with respect to matters pertaining to any distribu-
            tion and servicing plan or agreement applicable only to that
            class. These shares are entitled to vote at meetings of sharehold-
            ers. Matters submitted to shareholder vote must be approved by
            each Fund separately except (i) when required by the 1940 Act
            shares shall be voted together and (ii) when the Trustees have de-
            termined that the matter does not affect all Funds, then only
            shareholders of the Fund or Funds affected shall be entitled to
            vote on the matter. All classes of shares of a Fund will vote to-
            gether, except with respect to a distribution and servicing plan
            or agreement applicable to a class of shares or when a class vote
            is required as specified above or otherwise by the 1940 Act.
            Shares are freely transferable, are entitled to dividends as de-
            clared by the Trustees and, in liquidation of the Trust, are enti-
            tled to receive the net assets of their Fund, but not of the other
            Funds. The Trust does not generally hold annual meetings of share-
            holders and will do so only when required by law. Shareholders may
            remove Trustees from office by votes cast in person or by proxy at
            a meeting of shareholders or by written consent. Such a meeting
            will be called at the written request of the holders of 10% of the
            Trust's outstanding shares.
               
               Shares entitle their holders to one vote per share (with
            proportionate voting for fractional shares). As of March 10, 1999,
            the Trust believes that there were no shareholders of record of
            25% or more of the outstanding voting securities of any Fund.
            PIMCO Advisors L.P. (Newport Beach, California), the Trust's
            investment adviser and administrator, with respect to the Tax-
            Efficient Equity Fund. As used in this Prospectus, the phrase
            "vote of a majority of the outstanding shares" of a Fund (or the
            Trust) means the vote of the lesser of: (1) 67% of the shares of
            the Fund (or the Trust) present at a meeting, if the holders of
            more than 50% of the outstanding shares are present in person or
            by proxy; or (2) more than 50% of the outstanding shares of the
            Fund (or the Trust).     
 
34  PIMCO Funds: Multi-Manager Series 
<PAGE>
 
            --------------------------------------------------------------------
PIMCO       INVESTMENT ADVISER AND ADMINISTRATOR
Funds: 
Multi-      PIMCO Advisors L.P., 800 Newport Center Drive, Newport Beach, CA
Manager     92660
Series      --------------------------------------------------------------------
               
            SUB-ADVISERS     
               
            PIMCO Equity Advisors division of PIMCO Advisors L.P., Cadence
            Capital Management, Columbus Circle Investors, NFJ Investment
            Group, Parametric Portfolio Associates     
            --------------------------------------------------------------------
            DISTRIBUTOR
 
            PIMCO Funds Distributors LLC, 2187 Atlantic Street, Stamford, CT
            06902
            --------------------------------------------------------------------
            CUSTODIAN
 
            Investors Fiduciary Trust Company, 801 Pennsylvania, Kansas City,
            MO 64105
            --------------------------------------------------------------------
            SHAREHOLDER SERVICING AGENT AND TRANSFER AGENT
 
            First Data Investor Services Group, Inc., P.O. Box 9688,
            Providence, RI 02940
            --------------------------------------------------------------------
            INDEPENDENT ACCOUNTANTS
 
            PricewaterhouseCoopers LLP, 1055 Broadway, Kansas City, MO 64105
            --------------------------------------------------------------------
            LEGAL COUNSEL
 
            Ropes & Gray, One International Place, Boston, MA 02110
            --------------------------------------------------------------------
            For further information about the PIMCO Funds, call 1-888-87-PIMCO
            or visit our Web site at www.pimcofunds.com.

<PAGE>
 
                           PIMCO Funds is on the Web

                              www.pimcofunds.com

A Partial List of What's Available:

Daily Manager Commentary

Fund Manager Bios

Current and Historical Fund Performance

Lipper Rankings

Morningstar Ratings

Listing of Fund Portfolio Holdings

Risk Analysis

Daily Share Prices

Resources for Investment Professionals

[GRAPHIC APPEARS HERE]

PIMCO Funds Distributors LLC is pleased to announce the launch of its Web site.
We can be found on the Worldwide Web at www.pimcofunds.com. 

You now have around-the-clock access to the most timely and comprehensive
information available on all of the PIMCO Funds. In addition, the site includes
daily commentary from our fund managers, with insights on the economy and other
factors affecting the stock and bond markets.

[GRAPHIC APPEARS HERE]

You'll find the site to be informative and easy-to-use. There are several
functions that can help you navigate your way around the site. Among the major
sections are Investment Insight and Fund Information.

[GRAPHIC APPEARS HERE]

Investment Insight

The Investment Insight section provides an overview of six of the investment
management firms which are part of PIMCO Advisors L.P. You'll find an
explanation of each firm's investment process, biographies of the investment
team, manager updates and more.

[GRAPHIC APPEARS HERE]

Fund Information

In the Fund Information section you'll access profiles of all the PIMCO Funds.
Some include a summary of each fund's portfolio, risk analysis data, Lipper
rankings and Morningstar ratings. You can also obtain daily fund share prices.
And now we provide current and historical performance for Class D shares.

Questions? 

We're sure you will find the PIMCO Funds Web site to be an invaluable tool. If
you have any comments or questions about the site, please call us today at
1-888-87-PIMCO. Or, use the e-mail feature of the site to contact us.

Please read the relevant prospectus carefully before you invest in any PIMCO
Fund.

PZ010.11/98
<PAGE>
 
[GRAPHIC APPEARS HERE]      PIMCO Funds Prospectus

    
Multi-Manager         GROWTH STOCK FUNDS          ENHANCED INDEX STOCK FUNDS  
Series                Growth Fund                 Tax-Efficient Equity Fund   
                      Target Fund                                             
April 1, 1999         Opportunity Fund            INTERNATIONAL STOCK FUNDS   
                                                  International Fund          
Share Classes         BLEND STOCK FUNDS                                       
(A) (B) (C)           Capital Appreciation Fund   SECTOR-RELATED STOCK FUNDS  
                      Mid-Cap Growth Fund         Innovation Fund             
                                                  Precious Metals Fund        
                      VALUE STOCK FUNDS                                       
                      Equity Income Fund          STOCK AND BONDS FUNDS       
                      Renaissance Fund            Balanced Fund                
                      Value Fund                 
                      Value 25 Fund              
                      Small-Cap Value Fund 
                                 
                            
                            
                            
                            
                            
                            
                            

                                                                     P I M C O
                                                                     ---------
                                                                         FUNDS
<PAGE>
 
            PIMCO Funds: Multi-Manager Series
            Prospectus
               
            April 1, 1999     
 
            PIMCO Funds: Multi-Manager Series (the "Trust") is an open-end se-
            ries management investment company offering fifteen separate di-
            versified investment portfolios (each a "Fund") in this Prospec-
            tus, each with different investment objectives and strategies. The
            address of PIMCO Funds: Multi-Manager Series is 840 Newport Center
            Drive, Suite 300, Newport Beach, CA 92660.
 
            Each Fund offers three classes of shares in this Prospectus: Class
            A shares (generally sold subject to an initial sales charge),
            Class B shares (sold subject to a contingent deferred sales
            charge) and Class C shares (sold subject to an asset based sales
            charge). Through separate prospectuses, certain Funds may offer up
            to three additional classes of shares, Class D, Institutional
            Class and Administrative Class shares. See "Alternative Purchase
            Arrangements."
 
            This Prospectus concisely describes the information investors
            should know before investing in Class A, Class B and Class C
            shares of the Funds. Please read this Prospectus carefully and
            keep it for further reference.
 
            Information about the investment objective of each Fund, along
            with a detailed description of the types of securities in which
            each Fund may invest, and of investment policies and restrictions
            applicable to each Fund, are set forth in this Prospectus. There
            can be no assurance that the investment objective of any Fund will
            be achieved. Because the market value of each Fund's investments
            will change, the investment returns and net asset value per share
            of each Fund will vary.
               
            A Statement of Additional Information, dated April 1, 1999, as
            amended or supplemented from time to time, is available free of
            charge by writing to PIMCO Funds Distributors LLC (the "Distribu-
            tor"), 2187 Atlantic Street, Stamford, Connecticut 06902, or by
            telephoning 1-800-426-0107. The Statement of Additional Informa-
            tion, which contains more detailed information about the Trust,
            has been filed with the Securities and Exchange Commission and is
            incorporated by reference in this Prospectus. The Securities and
            Exchange Commission maintains an Internet World Wide Web site (at
            www.sec.gov) which contains the Statement of Additional Informa-
            tion, materials that are incorporated by reference into this Pro-
            spectus and the Statement of Additional Information, and other in-
            formation about the Funds.     
 
            These securities have not been approved or disapproved by the Se-
            curities and Exchange Commission or any state securities commis-
            sion, nor has the Securities and Exchange Commission or any state
            securities commission passed upon the accuracy or adequacy of this
            Prospectus. Any representation to the contrary is a criminal of-
            fense.
 
            Shares of the Funds are not deposits or obligations of, or guaran-
            teed or endorsed by, any financial institution, and the shares are
            not federally insured by the Federal Deposit Insurance Corpora-
            tion, the Federal Reserve Board or any other agency, and involve
            risk, including the possible loss of principal.
 
              TABLE OF CONTENTS
 
<TABLE>   
<S>                                  <C> 
PIMCO Funds Overview..................3
Schedule of Fees......................4
Financial Highlights..................8
Investment Objectives and Policies...18
Characteristics and Risks of Securities
 and Investment Techniques...........26
Performance Information..............38
How to Buy Shares....................40
Alternative Purchase Arrangements ...43
Exchange Privilege...................51
How to Redeem........................52
Distributor and Distribution and
Servicing Plans......................56
How Net Asset Value Is Determined....58
Distributions........................59
Taxes................................60
Management of the Trust..............61
Description of the Trust.............67
Mailings to Shareholders.............69
</TABLE>    
 
                                       2
<PAGE>
 
            PIMCO Funds Overview
               
            PIMCO Funds offers unique access to the investment expertise of
            PIMCO Advisors L.P. ("PIMCO Advisors" or the "Adviser"). As of De-
            cember 31, 1998, PIMCO Advisors managed over $240 billion in as-
            sets, including assets for 46 of the largest 100 U.S. corpora-
            tions. PIMCO Advisors' institutional heritage is reflected in the
            PIMCO Funds, each of which attempts to achieve its investment ob-
            jective using a specific investment style. The table below com-
            pares certain investment characteristics of the Funds. Other im-
            portant characteristics of the Funds are described under "Invest-
            ment Objectives and Policies."     
                   
Fund     <TABLE>   
Profiles <CAPTION>
                                                                                        Individual
                                       Investment                                       Portfolio
                         Fund Name     Objective           Primary Investments (/1/)    Manager(s) (/2/)
              ---------------------------------------------------------------------------------------------
           <C>           <C>           <C>                 <S>                          <C>
           Growth        Growth        Long-term growth of Common stocks of companies   Kenneth W. Corba
           Stock Funds                 capital; income is  with market
                                       incidental          capitalizations of at
                                                           least $5 billion
                     --------------------------------------------------------------------------------------
                         Target        Capital             Common stocks of companies   Kenneth W. Corba
                                       appreciation; no    with between $1 billion
                                       consideration given and $10 billion of market
                                       to income           capitalizations
                     --------------------------------------------------------------------------------------
                         Opportunity   Capital             Common stocks of companies   Michael F. Gaffney
                                       appreciation; no    with market
                                       consideration given capitalizations of less
                                       to income           than $2 billion
              ---------------------------------------------------------------------------------------------
           Blend Stock   Capital       Growth of capital   Common stocks of companies   David B. Breed,
           Funds         Appreciation                      with market                  William B. Bannick,
                                                           capitalizations of at        Katherine A. Burdon
                                                           least $1 billion that have   and
                                                           improving fundamentals and   Peter B. McManus
                                                           whose stock is reasonably
                                                           valued by the market
                     --------------------------------------------------------------------------------------
                         Mid-Cap       Growth of capital   Common stocks of companies   David B. Breed,
                         Growth                            with market                  William B. Bannick,
                                                           capitalizations in excess    Katherine A. Burdon
                                                           of $500 million that have    and
                                                           improving fundamentals and   Peter B. McManus
                                                           whose stock is reasonably
                                                           valued by the market
              ---------------------------------------------------------------------------------------------
           Value Stock   Equity        Current income as a Common stocks with below-    Chris Najork and
           Funds         Income        primary objective;  average price to earnings    Benjamin Fischer
                                       long-term growth of ratios and higher dividend
                                       capital as a        yields relative to their
                                       secondary objective industry groups
                     --------------------------------------------------------------------------------------
                         Renaissance   Long-term growth of Common stocks with below-    Clifford G.
                                       capital and income  average valuations that      Fox (/3/)
                                                           have improving business
                                                           fundamentals
                     --------------------------------------------------------------------------------------
                         Value         Long-term growth of Common stocks with below-    Chris Najork,
                                       capital and income  average price to earnings    Benjamin Fischer
                                                           ratios relative to their     and Paul A.
                                                           industry groups              Magnuson
                     --------------------------------------------------------------------------------------
                         Value 25      Long-term growth of Approximately 25 common      Chris Najork,
                                       capital and income  stocks of companies with     Benjamin Fischer
                                                           medium market                and Cliff Hoover
                                                           capitalizations that have
                                                           below-average price to
                                                           earnings ratios relative
                                                           to their industry groups
                     --------------------------------------------------------------------------------------
                         Small-Cap     Long-term growth of Common stocks of companies   Chris Najork,
                         Value         capital and income  with market                  Benjamin Fischer
                                                           capitalizations between      and Paul A.
                                                           $50 million and $1 billion   Magnuson
                                                           and below-average price to
                                                           earnings ratios relative
                                                           to their industry groups
              ---------------------------------------------------------------------------------------------
           Enhanced      Tax-Efficient Maximum after-tax   A broadly diversified        David Stein, Tom
           Index Stock   Equity        growth of capital   portfolio of at least 200    Seto and
           Funds                                           common stocks of companies   Cliff Quisenberry
                                                           with larger
                                                           market capitalizations
              ---------------------------------------------------------------------------------------------
           International International Capital             Non-U.S. stocks of           James Smith
           Stock Funds                 appreciation;       companies with small,
                                       income is           medium and large market
                                       incidental          capitalizations (developed
                                                           and emerging markets)
              ---------------------------------------------------------------------------------------------
           Sector-       Innovation    Capital             Common Stocks of companies   Dennis P. McKechnie
           Related                     appreciation; no    with small, medium and
           Stock Funds                 consideration given large market
                                       to income           capitalizations
                                                           (technology-related
                                                           stocks)
                     --------------------------------------------------------------------------------------
                         Precious      Capital             U.S. and non-U.S. stocks     Henry J. Bingham
                         Metals        appreciation; no    of companies with medium
                                       consideration given and large market
                                       to income           capitalizations (precious
                                                           metals-related stocks)
              ---------------------------------------------------------------------------------------------
           Stock and     Balanced      Total return        Common stocks, fixed         David B. Breed,
           Bond Funds                  consistent with     income securities and        William B. Bannick,
                                       prudent investment  money market instruments     Katherine A.
                                       management                                       Burdon,
                                                                                        Peter B. McManus,
                                                                                        Chris Najork,
                                                                                        Benjamin Fischer,
                                                                                        Paul A. Magnuson
                                                                                        and William H.
                                                                                        Gross
         </TABLE>    
               
            1. For specific information concerning the market capitalizations
            of companies in which each Fund may invest and each Fund's invest-
            ment style, see "Investment Objectives and Policies" in this Pro-
            spectus.     
               
            2. This column lists the individual(s) who have or share primary
            responsibility for the day-to-day portfolio management of the
            noted Funds. PIMCO Advisors has retained a separate firm (each a
            "Sub-Adviser") to manage the investments of each Fund, except that
            the PIMCO Equity Advisors division ("PIMCO Equity Advisors") of
            PIMCO Advisors manages the investments of the Growth, Target, Op-
            portunity and Innovation Funds (acting in this capacity, PIMCO Eq-
            uity Advisors is also referred to as a "Sub-Adviser"). The Indi-
            vidual Portfolio Managers are associated with the following Sub-
            Advisers: Messrs. Corba, Gaffney and McKechnie are with PIMCO Eq-
            uity Advisors; Mr. Smith is with Blairlogie Capital Management
            ("Blairlogie"); Messrs. Breed, Bannick and McManus and Ms. Burdon
            are with Cadence Capital Management ("Cadence"); Mr. Fox is with
            Columbus Circle Investors ("Columbus Circle"); Messrs Najork,
            Fischer, Magnuson and Hoover are with NFJ Investment Group
            ("NFJ"); Mr. Gross is with Pacific Investment Management Company
            ("Pacific Investment Management"); Messrs. Stein, Seto and
            Quisenberry are with Parametric Portfolio Associates ("Paramet-
            ric"); and Mr. Bingham is with Van Eck Associates Corporation
            ("Van Eck"). See "Management of the Trust."     
               
            3. On or about May 7, 1999, PIMCO Equity Advisors will assume full
            portfolio management responsibility for the Renaissance Fund. See
            "Management of the Trust--Sub-Advisers--Columbus Circle."     
                   
       
                                                                  
                                                             Prospectus       3
<PAGE>
 

             Schedule of Fees
 
 
<TABLE>
<CAPTION>
                                             Class A     Class B     Class C
                                             Shares      Shares      Shares
            -------------------------------------------------------------------
            <S>                              <C>         <C>         <C>
Shareholder Maximum initial sales charge im-
Transaction posed on purchases
Expenses    (as a percentage of offering
            price at time of purchase)        5.50%       None        None
           --------------------------------------------------------------------
           Maximum sales charge imposed on
            reinvested dividends
            (as a percentage of net asset
            value at time of purchase)         None       None        None
           --------------------------------------------------------------------
           Maximum contingent deferred
            sales charge ("CDSC")
            (as a percentage of original
            purchase price)                      1%(/1/)    5%(/2/)     1%(/3/)
           --------------------------------------------------------------------
           Exchange Fee                        None       None        None
</TABLE>
 
            1. Imposed only in certain circumstances where Class A shares are
            purchased without a front-end sales charge at the time of pur-
            chase. See "Alternative Purchase Arrangements" in this Prospectus.
            2. The maximum CDSC is imposed on shares redeemed in the first
            year. For shares held longer than one year, the CDSC declines ac-
            cording to the schedule set forth under "Alternative Purchase Ar-
            rangements -- Deferred Sales Charge Alternative -- Class B Shares"
            in this Prospectus.
            3. The CDSC on Class C shares is imposed only on shares redeemed
            in the first year.
 
<TABLE>   
<CAPTION>
Class A Shares

                                                                 Example: You would pay the        Example: You would pay the
                                                                 following expenses on a $1,000    following expenses on a $1,000
                                                                 investment assuming (1) 5%        investment assuming (1) 5%
                                                                 annual return and (2)             annual return and (2) no
                    Annual Fund Operating Expenses               redemption at the end             redemption:
                    (As a percentage of average net assets):     of each time period:
                                                     Total
                               Admini-               Fund
                    Advisory   strative   12b-1      Operating   Year                              Year
   Fund             Fees       Fees(/1/)  Fees(/2/)  Expenses    1       3       5        10       1       3       5        10
   ---------------------------------------------------------------------------------------------------------------------------------
   <S>              <C>        <C>        <C>        <C>         <C>     <C>     <C>      <C>      <C>     <C>     <C>      <C>
   Growth                 .50%       .40%       .25%       1.15%     $66     $90     $115     $187     $66     $90     $115     $187
   ---------------------------------------------------------------------------------------------------------------------------------
   Target                 .55        .40        .25        1.20       67      91      117      192      67      91      117      192
   ---------------------------------------------------------------------------------------------------------------------------------
   Opportunity            .65        .40        .25        1.30       68      94      122      203      68      94      122      203
   ---------------------------------------------------------------------------------------------------------------------------------
   Capital
    Appreciation          .45        .40        .25        1.10       66      88      112      182      66      88      112      182
   ---------------------------------------------------------------------------------------------------------------------------------
   Mid-Cap Growth         .45        .40        .25        1.10       66      88      112      182      66      88      112      182
   ---------------------------------------------------------------------------------------------------------------------------------
   Equity Income          .45        .40        .25        1.10       66      88      112      182      66      88      112      182
   ---------------------------------------------------------------------------------------------------------------------------------
   Renaissance            .60        .40        .25        1.25       67      92      120      198      67      92      120      198
   ---------------------------------------------------------------------------------------------------------------------------------
   Value                  .45        .40        .25        1.10       66      88      112      182      66      88      112      182
   ---------------------------------------------------------------------------------------------------------------------------------
   Value 25               .50        .40        .25        1.15       66      90      115      187      66      90      115      187
   ---------------------------------------------------------------------------------------------------------------------------------
   Small-Cap Value        .60        .40        .25        1.25       67      92      120      198      67      92      120      198
   ---------------------------------------------------------------------------------------------------------------------------------
   Tax-Efficient
    Equity                .45        .40        .25        1.10       66      88      112      182      66      88      112      182
   ---------------------------------------------------------------------------------------------------------------------------------
   International          .55        .65        .25        1.45       69      98      130      219      69      98      130      219
   ---------------------------------------------------------------------------------------------------------------------------------
   Innovation             .65        .40        .25        1.30       68      94      122      203      68      94      122      203
   ---------------------------------------------------------------------------------------------------------------------------------
   Precious Metals        .60        .45        .25        1.30       68      94      122      203      68      94      122      203
   ---------------------------------------------------------------------------------------------------------------------------------
   Balanced               .45        .40        .25        1.10       66      88      112      182      66      88      112      182

</TABLE>    
 
            1. The Administrative Fees for each Fund are subject to reduction
            to the extent that the average net assets attributable in the ag-
            gregate to the Fund's Class A, Class B and Class C shares exceed
            $2.5 billion. See "Management of the Trust -- Advisory and Admin-
            istrative Fees."
            2. 12b-1 fees represent servicing fees which are paid annually to
            the Distributor and repaid to participating brokers, certain banks
            and other financial intermediaries. See "Distributor and Distribu-
            tion and Servicing Plans."
4  PIMCO Funds: Multi-Manager Series 
<PAGE>
 
 
<TABLE>   
<CAPTION>

Class B Shares
                                                                    Example: You would pay the
                                                                    following expenses on a $1,000
                                                                    investment assuming (1) 5%
                      Annual Fund Operating Expenses                annual return and (2) redemption
                      (As a percentage of average net assets):      at the end of each time period:
                                                        Total
                                 Admini-                Fund
                      Advisory   strative   12b-1       Operating   Year
Fund                  Fees       Fees(/1/)  Fees(/2/)   Expenses    1        3       5        10
              ----------------------------------------------------------------------------------------
<S>                   <C>        <C>        <C>         <C>         <C>      <C>     <C>      <C>
Growth                      .50%       .40%       1.00%       1.90% $    69  $    90 $    123 $    193
              ----------------------------------------------------------------------------------------
Target                      .55        .40        1.00        1.95       70       91      125      198
              ----------------------------------------------------------------------------------------
Opportunity                 .65        .40        1.00        2.05       71       94      130      209
              ----------------------------------------------------------------------------------------
Capital Appreciation        .45        .40        1.00        1.85       69       88      120      188
              ----------------------------------------------------------------------------------------
Mid-Cap Growth              .45        .40        1.00        1.85       69       88      120      188
              ----------------------------------------------------------------------------------------
Equity Income               .45        .40        1.00        1.85       69       88      120      188
              ----------------------------------------------------------------------------------------
Renaissance                 .60        .40        1.00        2.00       70       93      128      204
              ----------------------------------------------------------------------------------------
Value                       .45        .40        1.00        1.85       69       88      120      188
              ----------------------------------------------------------------------------------------
Value 25                    .50        .40        1.00        1.90       69       90      123      193
              ----------------------------------------------------------------------------------------
Small-Cap Value             .60        .40        1.00        2.00       70       93      128      204
              ----------------------------------------------------------------------------------------
Tax-Efficient
 Equity                     .45        .40        1.00        1.85       69       88      120      188
              ----------------------------------------------------------------------------------------
International               .55        .65        1.00        2.20       72       99      138      225
              ----------------------------------------------------------------------------------------
Innovation                  .65        .40        1.00        2.05       71       94      130      209
              ----------------------------------------------------------------------------------------
Precious Metals             .60        .45        1.00        2.05       71       94      130      209
              ----------------------------------------------------------------------------------------
Balanced                    .45        .40        1.00        1.85       69       88      120      188
<CAPTION>
                      Example: You would pay the
                      following expenses on a $1,000
                      investment assuming (1) 5%
                      annual return and (2) no
                      redemption:
                      Year
Fund                  1       3       5        10
              ----------------------------------------------------------------------------------------
<S>                   <C>     <C>     <C>      <C>
Growth                $    19 $    60 $    103 $    193
              ----------------------------------------------------------------------------------------
Target                     20      61      105      198
              ----------------------------------------------------------------------------------------
Opportunity                21      64      110      209
              ----------------------------------------------------------------------------------------
Capital Appreciation       19      58      100      188
              ----------------------------------------------------------------------------------------
Mid-Cap Growth             19      58      100      188
              ----------------------------------------------------------------------------------------
Equity Income              19      58      100      188
              ----------------------------------------------------------------------------------------
Renaissance                20      63      108      204
              ----------------------------------------------------------------------------------------
Value                      19      58      100      188
              ----------------------------------------------------------------------------------------
Value 25                   19      60      103      193
              ----------------------------------------------------------------------------------------
Small-Cap Value            20      63      108      204
              ----------------------------------------------------------------------------------------
Tax-Efficient
 Equity                    19      58      100      188
              ----------------------------------------------------------------------------------------
International              22      69      118      225
              ----------------------------------------------------------------------------------------
Innovation                 21      64      110      209
              ----------------------------------------------------------------------------------------
Precious Metals            21      64      110      209
              ----------------------------------------------------------------------------------------
Balanced                   19      58      100      188
</TABLE>    
 
            1. The Administrative Fees for each Fund are subject to reduction
            to the extent that the average net assets attributable in the ag-
            gregate to the Fund's Class A, Class B and Class C shares exceed
            $2.5 billion. See "Management of the Trust--Advisory and Adminis-
            trative Fees."
            2. 12b-1 fees which are equal to .25% represent servicing fees
            which are paid annually to the Distributor and repaid to partici-
            pating brokers, certain banks and other financial intermediaries.
            12b-1 fees which exceed .25% represent aggregate distribution and
            servicing fees. See "Distributor and Distribution and Servicing
            Plans."
    
                                                              Prospectus   5    

<PAGE>
 

 
 
 
<TABLE>   
<CAPTION>

Class C Shares
                                                                 Example: You would pay the
                                                                 following expenses on a $1,000
                                                                 investment assuming (1) 5%
                      Annual Fund Operating Expenses             annual return and (2) redemption
                      (As a percentage of average net assets):   at the end of each time period:
                                                      Total
                                Admini-               Fund
                      Advisory  strative   12b-1      Operating  Year
Fund                  Fees      Fees(/1/)  Fees(/2/)  Expenses   1        3       5        10
              -------------------------------------------------------------------------------------
<S>                   <C>       <C>        <C>        <C>        <C>      <C>     <C>      <C>
Growth                .50%      .40%       1.00%      1.90%          $29      $60     $103     $222
              -------------------------------------------------------------------------------------
Target                .55       .40        1.00       1.95            30       61      105      227
              -------------------------------------------------------------------------------------
Opportunity           .65       .40        1.00       2.05            31       64      110      238
              -------------------------------------------------------------------------------------
Capital Appreciation  .45       .40        1.00       1.85            29       58      100      217
              -------------------------------------------------------------------------------------
Mid-Cap Growth        .45       .40        1.00       1.85            29       58      100      217
              -------------------------------------------------------------------------------------
Equity Income         .45       .40        1.00       1.85            29       58      100      217
              -------------------------------------------------------------------------------------
Renaissance           .60       .40        1.00       2.00            30       63      108      233
              -------------------------------------------------------------------------------------
Value                 .45       .40        1.00       1.85            29       58      100      217
              -------------------------------------------------------------------------------------
Value 25              .50       .40        1.00       1.90            29       60      103      222
              -------------------------------------------------------------------------------------
Small-Cap Value       .60       .40        1.00       2.00            30       63      108      233
              -------------------------------------------------------------------------------------
Tax-Efficient
 Equity               .45       .40        1.00       1.85            29       58      100      217
              -------------------------------------------------------------------------------------
International         .55       .65        1.00       2.20            32       69      118      253
              -------------------------------------------------------------------------------------
Innovation            .65       .40        1.00       2.05            31       64      110      238
              -------------------------------------------------------------------------------------
Precious Metals       .60       .45        1.00       2.05            31       64      110      238
              -------------------------------------------------------------------------------------
Balanced              .45       .40        1.00       1.85            29       58      100      217
<CAPTION>
                      Example: You would pay the
                      following expenses on a $1,000
                      investment assuming (1) 5%
                      annual return and (2) no
                      redemption:
                      Year
Fund                  1       3       5        10
              -------------------------------------------------------------------------------------
<S>                   <C>     <C>     <C>      <C>
Growth                    $19     $60     $103     $222
              -------------------------------------------------------------------------------------
Target                     20      61      105      227
              -------------------------------------------------------------------------------------
Opportunity                21      64      110      238
              -------------------------------------------------------------------------------------
Capital Appreciation       19      58      100      217
              -------------------------------------------------------------------------------------
Mid-Cap Growth             19      58      100      217
              -------------------------------------------------------------------------------------
Equity Income              19      58      100      217
              -------------------------------------------------------------------------------------
Renaissance                20      63      108      233
              -------------------------------------------------------------------------------------
Value                      19      58      100      217
              -------------------------------------------------------------------------------------
Value 25                   19      60      103      222
              -------------------------------------------------------------------------------------
Small-Cap Value            20      63      108      233
              -------------------------------------------------------------------------------------
Tax-Efficient
 Equity                    19      58      100      217
              -------------------------------------------------------------------------------------
International              22      69      118      253
              -------------------------------------------------------------------------------------
Innovation                 21      64      110      238
              -------------------------------------------------------------------------------------
Precious Metals            21      64      110      238
              -------------------------------------------------------------------------------------
Balanced                   19      58      100      217
</TABLE>    
 
Class C
Shares
            1. The Administrative Fees for each Fund are subject to reduction
            to the extent that the average net assets attributable in the ag-
            gregate to the Fund's Class A, Class B and Class C shares exceed
            $2.5 billion. See "Management of the Trust--Advisory and Adminis-
            trative Fees."
            2. 12b-1 fees which are equal to .25% represent servicing fees
            which are paid annually to the Distributor and repaid to partici-
            pating brokers, certain banks and other financial intermediaries.
            12b-1 fees which exceed .25% represent aggregate distribution and
            servicing fees. See "Distributor and Distribution and Servicing
            Plans."
 
            The purpose of the foregoing tables is to assist investors in un-
            derstanding the various costs and expenses of the Trust that are
            borne directly or indirectly by Class A, Class B and Class C
            shareholders of the Funds. The information is based upon each
            Fund's current fees and expenses. The Examples for Class A shares
            assume payment of the current maximum applicable sales load. Due
            to the 12b-1 distribution fee imposed on Class B and Class C
            shares, a Class B or Class C shareholder of the Trust may, depend-
            ing on the length of time the shares are held, pay more than the
            economic equivalent of the maximum front-end sales charges permit-
            ted by relevant rules of the National Association of Securities
            Dealers, Inc.
 
            NOTE: The figures shown in the Examples are entirely hypothetical.
            They are not representations of past or future performance or ex-
            penses; actual performance and/or expenses may be more or less
            than shown.
 
6  PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
 
                      (This page left blank intentionally)
 
 
 
 
                                                                
                                                              Prospectus  7    
<PAGE>
 
PIMCO Funds: Multi-Manager Series
Financial Highlights
   
The financial highlights set forth on the following pages present certain in-
formation and ratios as well as performance information for the Funds that
were operational during the periods listed. Certain information provided below
for periods through June 30, 1998 is included in the June 30, 1998 PIMCO Funds
Annual Report (relating to Class A, B and C shares) and has been audited by
PricewaterhouseCoopers LLP, independent accountants, whose report thereon is
also included in such Annual Report. Information for the periods ended Decem-
ber 31, 1998 is included in the December 31, 1998 PIMCO Funds Semi-Annual Re-
port (relating to Class A, B and C shares) and is unaudited. The Annual Report
and Semi-Annual Report are incorporated by reference in the Statement of Addi-
tional Information and may be obtained without charge from the Distributor.
    
<TABLE>   
<CAPTION>
Selected Per Share Data                                 Net Realized/                  Dividends  Dividends in  Distributions
for the Period Ended:    Net Asset Value Net            Unrealized     Total Income    From Net   Excess of Net From Net
                         Beginning       Investment     Gain (Loss) on From Investment Investment Investment    Realized Capital
                         of Period       Income (Loss)  Investments    Operations      Income     Income        Gains
                         --------------- -------------  -------------- --------------- ---------- ------------- ----------------
<S>                      <C>             <C>            <C>            <C>             <C>        <C>           <C>
Growth Fund
 Class A
 12/31/98 +                 $  32.62        $(0.06)(a)      $ 2.94 (a)    $   2.88      $  0.00     $   0.00        $  (3.92)
 06/30/98                      27.03         (0.08)(a)        9.99 (a)        9.91         0.00         0.00           (4.32)
 10/01/96-
  06/30/97                     26.58          0.69            3.27            3.96         0.00         0.00           (3.51)
 09/30/96                      25.73          0.06            3.72            3.78         0.00         0.00           (2.93)
 09/30/95                      22.01          0.12            4.79            4.91         0.00         0.00           (1.19)
 09/30/94                      23.64          0.12            0.12            0.24         0.00         0.00           (1.87)
 09/30/93                      20.76          0.09            3.53            3.62         0.00         0.00           (0.74)
 09/30/92                      20.63          0.14            1.38            1.52        (0.14)        0.00           (1.25)
 10/26/90-
  09/30/91                     16.99          0.21            5.28            5.49        (0.19)        0.00           (1.66)
 Class B
 12/31/98 +                    30.34         (0.16)(a)        2.69 (a)        2.53         0.00         0.00           (3.92)
 06/30/98                      25.59         (0.28)(a)        9.35 (a)        9.07         0.00         0.00           (4.32)
 10/01/96-
  06/30/97                     25.46          0.35            3.29            3.64         0.00         0.00           (3.51)
 09/30/96                      24.94         (0.07)           3.52            3.45         0.00         0.00           (2.93)
 05/23/95-
  09/30/95                     22.63         (0.03)           2.34            2.31         0.00         0.00            0.00
 Class C
 12/31/98 +                    30.33         (0.16)(a)        2.69 (a)        2.53         0.00         0.00           (3.92)
 06/30/98                      25.58         (0.28)(a)        9.35 (a)        9.07         0.00         0.00           (4.32)
 10/01/96-
  06/30/97                     25.46          0.45            3.18            3.63         0.00         0.00           (3.51)
 09/30/96                      24.94         (0.12)           3.57            3.45         0.00         0.00           (2.93)
 09/30/95                      21.52         (0.04)           4.65            4.61         0.00         0.00           (1.19)
 09/30/94                      23.32         (0.04)           0.11            0.07         0.00         0.00           (1.87)
 09/30/93                      20.64         (0.07)           3.49            3.42         0.00         0.00           (0.74)
 09/30/92                      20.54         (0.01)           1.37            1.36        (0.01)        0.00           (1.25)
 09/30/91                      16.93          0.12            5.32            5.44        (0.17)        0.00           (1.66)
 09/30/90                      19.71          0.19           (1.67)          (1.48)       (0.18)        0.00           (1.12)
 09/30/89                      13.93          0.11            5.77            5.88        (0.10)        0.00            0.00
Target Fund
 Class A
 12/31/98 +                 $  16.35        $(0.03)(a)      $ 0.78 (a)    $   0.75      $  0.00     $   0.00        $  (0.98)
 6/30/98                       16.82         (0.08)(a)        4.06 (a)        3.98         0.00         0.00           (4.45)
 10/01/96-
  06/30/97                     17.11         (0.04)(a)        1.82 (a)        1.78         0.00         0.00           (2.07)
 09/30/96                      16.40         (0.05)           2.54            2.49         0.00         0.00           (1.78)
 09/30/95                      13.13         (0.02)           3.45            3.43         0.00         0.00           (0.16)
 09/30/94                      12.72         (0.04)           0.57            0.53         0.00         0.00           (0.12)
 12/17/92-
  09/30/93                     10.00         (0.02)           2.74            2.72         0.00         0.00            0.00
 Class B
 12/31/98 +                    15.34         (0.08)(a)        0.72 (a)        0.64         0.00         0.00           (0.98)
 6/30/98                       16.14         (0.19)(a)        3.84 (a)        3.65         0.00         0.00           (4.45)
 10/01/96-
  06/30/97                     16.58         (0.12)(a)        1.75 (a)        1.63         0.00         0.00           (2.07)
 09/30/96                      16.06         (0.09)           2.39            2.30         0.00         0.00           (1.78)
 05/22/95-
  09/30/95                     13.93         (0.05)           2.18            2.13         0.00         0.00            0.00
 Class C
 12/31/98 +                    15.34         (0.08)(a)        0.72 (a)        0.64         0.00         0.00           (0.98)
 06/30/98                      16.13         (0.19)(a)        3.85 (a)        3.66         0.00         0.00           (4.45)
 10/01/96-
  06/30/97                     16.58         (0.12)(a)        1.74 (a)        1.62         0.00         0.00           (2.07)
 09/30/96                      16.05         (0.16)           2.47            2.31         0.00         0.00           (1.78)
 09/30/95                      12.95         (0.12)           3.38            3.26         0.00         0.00           (0.16)
 09/30/94                      12.65         (0.14)           0.56            0.42         0.00         0.00           (0.12)
 12/17/92-
  9/30/93                      10.00         (0.09)           2.74            2.65         0.00         0.00            0.00
<CAPTION>
Selected Per Share Data  Distributions
for the Period Ended:    in Excess of
                         Net Realized
                         Capital Gains
                         -------------
<S>                      <C>
Growth Fund
 Class A
 12/31/98 +                $   0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 09/30/95                      0.00
 09/30/94                      0.00
 09/30/93                      0.00
 09/30/92                      0.00
 10/26/90-
  09/30/91                     0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 05/23/95-
  09/30/95                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 09/30/95                      0.00
 09/30/94                      0.00
 09/30/93                      0.00
 09/30/92                      0.00
 09/30/91                      0.00
 09/30/90                      0.00
 09/30/89                      0.00
Target Fund
 Class A
 12/31/98 +                $   0.00
 6/30/98                       0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 09/30/95                      0.00
 09/30/94                      0.00
 12/17/92-
  09/30/93                     0.00
 Class B
 12/31/98 +                    0.00
 6/30/98                       0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 05/22/95-
  09/30/95                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 09/30/95                      0.00
 09/30/94                      0.00
 12/17/92-
  9/30/93                      0.00
</TABLE>    
   
+Unaudited     
   
*Annualized     
 (a)Per share amounts based upon average number of shares outstanding during
the period.
       
                                       8
<PAGE>
 
                                                                    
                                                                 Prospectus     
   
Financial Statements and related notes are also incorporated by reference in
the Statement of Additional Information.     
   
The information provided for each of the Growth, Target, Opportunity, Renais-
sance, International, Innovation and Precious Metals Funds reflects the opera-
tional history of a corresponding series of PIMCO Advisors Funds which reorga-
nized as a series of the Trust on January 17, 1997. In connection with the re-
organizations, these Funds changed their fiscal year ends from September 30 to
June 30. The expense ratios provided for these Funds reflect fee arrangements
of PIMCO Advisors Funds in effect prior to January 17, 1997 which differ from
the current fee arrangements of the Trust.     
 
<TABLE>   
<CAPTION>
                                                                                              Ratio of Net
                                                                                  Ratio of    Investment
Distributions  Tax Basis               Net Asset                                  Expenses to Income (Loss) to
from           Return of Total         Value End of              Net Assets End   Average Net Average Net      Portfolio
Equalization   Capital   Distributions Period       Total Return of Period (000s) Assets      Assets           Turnover Rate
- -------------  --------- ------------- ------------ ------------ ---------------- ----------- ---------------- ------------- 
<S>            <C>       <C>           <C>          <C>          <C>              <C>         <C>              <C>
  $   0.00     $   0.00    $  (3.92)     $  31.58        9.82%       $ 202,520        1.16%*        (0.41)%*           53%
      0.00         0.00       (4.32)        32.62       41.03          180,119        1.16          (0.27)            123
      0.00         0.00       (3.51)        27.03       15.93          147,276        1.11*          0.13*             94
      0.00         0.00       (2.93)        26.58       16.11          151,103        1.11           0.24             104
      0.00         0.00       (1.19)        25.73       23.70          134,819        1.10           0.50             111
      0.00         0.00       (1.87)        22.01        1.30          107,269        1.10           0.60             115
      0.00         0.00       (0.74)        23.64       17.70           97,509        1.10           0.40             110
      0.00         0.00       (1.39)        20.76        7.70           71,209        1.10           0.70              92
      0.00         0.00       (1.85)        20.63       38.60           17,064        1.20*          0.90*             95
 
      0.00         0.00       (3.92)        28.95        9.40          100,937        1.90*         (1.16)*            53
      0.00         0.00       (4.32)        30.34       39.97           80,719        1.91          (1.02)            123
      0.00         0.00       (3.51)        25.59       15.32           55,626        1.86*         (0.62)*            94
      0.00         0.00       (2.93)        25.46       15.22           37,256        1.86          (0.51)            104
      0.00         0.00        0.00         24.94       10.20            7,671        1.90*         (0.40)*           111
 
      0.00         0.00       (3.92)        28.94        9.40        1,936,842        1.91*         (1.16)*            53
      0.00         0.00       (4.32)        30.33       39.99        1,853,002        1.91          (1.02)            123
      0.00         0.00       (3.51)        25.58       15.27        1,514,432        1.86*         (0.61)*            94
      0.00         0.00       (2.93)        25.46       15.22        1,450,216        1.86          (0.51)            104
      0.00         0.00       (1.19)        24.94       22.80        1,290,152        1.90          (0.20)            111
      0.00         0.00       (1.87)        21.52        0.50        1,085,427        1.90          (0.20)            115
      0.00         0.00       (0.74)        23.32       16.90        1,077,490        1.90          (0.30)            110
      0.00         0.00       (1.26)        20.64        6.90          853,121        1.90          (0.10)             92
      0.00         0.00       (1.83)        20.54       35.10          564,398        1.80           0.60              95
      0.00         0.00       (1.30)        16.93       (8.00)         314,075        1.70           1.00              89
      0.00         0.00       (0.10)        19.71       42.40          373,490        1.70           0.70              83
 
 
 
  $   0.00     $   0.00    $  (0.98)     $  16.12        5.24%       $ 144,643        1.21%*        (0.44)%*          128%
      0.00         0.00       (4.45)        16.35       27.49          157,277        1.22          (0.49)            226
      0.00         0.00       (2.07)        16.82       11.19          150,689        1.20*         (0.31)*           145
      0.00         0.00       (1.78)        17.11       16.50          156,027        1.18          (0.34)            141
      0.00         0.00       (0.16)        16.40       26.50          121,915        1.20          (0.10)            128
      0.00         0.00       (0.12)        13.13        4.20           90,527        1.20          (0.30)            104
      0.00         0.00        0.00         12.72       27.20           48,787        1.30*         (0.30)*            76
 
      0.00         0.00       (0.98)        15.00        4.87           73,872        1.95*         (1.18)*           128
      0.00         0.00       (4.45)        15.34       26.45           76,194        1.96          (1.24)            226
      0.00         0.00       (2.07)        16.14       10.58           67,531        1.94*         (1.05)*           145
      0.00         0.00       (1.78)        16.58       15.58           49,851        1.93          (1.09)            141
      0.00         0.00        0.00         16.06       15.30            7,554        2.00*         (0.90)*           128
 
      0.00         0.00       (0.98)        15.00        4.87          904,355        1.95*         (1.18)*           128
      0.00         0.00       (4.45)        15.34       26.53          952,728        1.96          (1.24)            226
      0.00         0.00       (2.07)        16.13       10.52          969,317        1.94*         (1.06)*           145
      0.00         0.00       (1.78)        16.58       15.66          974,948        1.93          (1.09)            141
      0.00         0.00       (0.16)        16.05       25.60          780,355        2.00          (0.90)            128
      0.00         0.00       (0.12)        12.95        3.40          556,043        2.00          (1.10)            104
      0.00         0.00        0.00         12.65       26.50          298,238        2.00*         (1.00)*            76
</TABLE>    
                                       9
<PAGE>
 

Financial Highlights (continued)
 
<TABLE>   
<CAPTION>
 
Selected Per Share Data                                 Net Realized/                  Dividends  Dividends in  Distributions
for the Period Ended:    Net Asset Value Net            Unrealized     Total Income    From Net   Excess of Net From Net
                         Beginning       Investment     Gain (Loss) on From Investment Investment Investment    Realized Capital
                         of Period       Income (Loss)  Investments    Operations      Income     Income        Gains
                         --------------- -------------  -------------- --------------- ---------- ------------- ----------------
<S>                      <C>             <C>            <C>            <C>             <C>        <C>           <C>
Opportunity
 Fund
 Class A
 12/31/98 +                 $  31.33        $(0.12)(a)      $(2.55)(a)    $  (2.67)     $  0.00     $   0.00        $  (4.62)
 06/30/98                      29.35         (0.27)(a)        4.19 (a)        3.92         0.00         0.00           (1.94)
 10/01/96-
  06/30/97                     37.36          0.00           (3.10)          (3.10)        0.00         0.00           (4.91)
 09/30/96                      39.08         (0.11)           6.12            6.01         0.00         0.00           (7.73)
 09/30/95                      28.87         (0.11)          11.19           11.08         0.00         0.00           (0.87)
 09/30/94                      33.43         (0.17)          (2.02)          (2.19)        0.00         0.00           (2.26)
 09/30/93                      19.84         (0.15)          14.00           13.85         0.00         0.00           (0.26)
 09/30/92                      17.95         (0.04)           3.61            3.57         0.00         0.00           (1.68)
 12/17/90-
  09/30/91                     11.78         (0.03)           6.20            6.17         0.00         0.00            0.00
 Class C
 12/31/98 +                    28.86         (0.20)(a)       (2.37)(a)       (2.57)        0.00         0.00           (4.62)
 06/30/98                      27.38         (0.46)(a)        3.88 (a)        3.42         0.00         0.00           (1.94)
 10/01/96-
  06/30/97                     35.38         (0.04)          (3.05)          (3.09)        0.00         0.00           (4.91)
 09/30/96                      37.64         (0.35)           5.82            5.47         0.00         0.00           (7.73)
 09/30/95                      28.04         (0.34)          10.81           10.47         0.00         0.00           (0.87)
 09/30/94                      32.77         (0.38)          (1.98)          (2.36)        0.00         0.00           (2.26)
 09/30/93                      19.60         (0.34)          13.77           13.43         0.00         0.00           (0.26)
 09/30/92                      17.87         (0.18)           3.59            3.41         0.00         0.00           (1.68)
 09/30/91                      11.93         (0.11)           6.42            6.31         0.00         0.00           (0.37)
 09/30/90                      15.78         (0.01)          (2.13)          (2.14)        0.00         0.00           (1.71)
 09/30/89                      11.84         (0.03)           3.97            3.94         0.00         0.00            0.00
<CAPTION>
 
Selected Per Share Data  Distributions
for the Period Ended:    in Excess of
                         Net Realized
                         Capital Gains
                         -------------
<S>                      <C>
Opportunity
 Fund
 Class A
 12/31/98 +                $   0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 09/30/95                      0.00
 09/30/94                      0.00
 09/30/93                      0.00
 09/30/92                      0.00
 12/17/90-
  09/30/91                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 09/30/95                      0.00
 09/30/94                      0.00
 09/30/93                      0.00
 09/30/92                      0.00
 09/30/91                      0.00
 09/30/90                      0.00
 09/30/89                      0.00
 
Capital Ap-
 preciation
 Fund
 Class A
 012/31/98 +                $  26.01        $ 0.04 (a)      $ 0.52 (a)    $   0.56      $ (0.10)    $   0.00        $  (1.65)
 6/30/98                       21.16          0.07 (a)        6.55 (a)        6.62        (0.09)        0.00           (1.68)
 01/20/97-
  06/30/97                     19.31          0.09            1.76            1.85         0.00         0.00            0.00
 Class B
 12/31/98 +                    25.75         (0.05)(a)        0.52 (a)        0.47         0.00         0.00           (1.65)
 06/30/98                      21.10         (0.11)(a)        6.51 (a)        6.40        (0.07)        0.00           (1.68)
 01/20/97-
  06/30/97                     19.31          0.01            1.78            1.79         0.00         0.00            0.00
 Class C
 12/31/98 +                    25.78         (0.05)(a)        0.51 (a)        0.46         0.00         0.00           (1.65)
 06/30/98                      21.10         (0.12)(a)        6.53 (a)        6.41        (0.05)        0.00           (1.68)
 01/20/97-
  06/30/97                     19.31          0.02            1.77            1.79         0.00         0.00            0.00
Capital Ap-
 preciation
 Fund
 Class A
 012/31/98 +               $   0.00
 6/30/98                       0.00
 01/20/97-
  06/30/97                     0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
 
Mid-Cap
 Growth Fund
 Class A
 12/31/98 +                 $  24.00        $ 0.01 (a)      $ 0.04 (a)    $   0.05      $ (0.01)    $   0.00        $  (1.07)
 06/30/98                      20.24          0.02 (a)        5.11 (a)        5.13        (0.04)        0.00           (1.33)
 01/13/97-
  06/30/97                     18.14         (0.04)           2.14            2.10         0.00         0.00            0.00
 Class B
 12/31/98 +                    23.77         (0.07)(a)        0.04 (a)       (0.03)        0.00         0.00           (1.07)
 06/30/98                      20.17         (0.16)(a)        5.09 (a)        4.93         0.00         0.00           (1.33)
 01/13/97-
  06/30/97                     18.14         (0.11)           2.14            2.03         0.00         0.00            0.00
 Class C
 12/31/98 +                    23.77         (0.07)(a)        0.04 (a)       (0.03)        0.00         0.00           (1.07)
 06/30/98                      20.18         (0.16)(a)        5.08 (a)        4.92         0.00         0.00           (1.33)
 01/13/97-
  06/30/97                     18.14         (0.10)           2.14            2.04         0.00         0.00            0.00
Mid-Cap
 Growth Fund
 Class A
 12/31/98 +                $   0.00
 06/30/98                      0.00
 01/13/97-
  06/30/97                     0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/13/97-
  06/30/97                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/13/97-
  06/30/97                     0.00
 
Equity Income
 Fund
 Class A
 12/31/98 +                 $  16.04        $ 0.19 (a)      $(0.02)(a)    $   0.17      $ (0.18)    $   0.00        $  (1.76)
 06/30/98                      15.39          0.39 (a)        2.73 (a)        3.12        (0.38)        0.00           (2.09)
 01/20/97-
  06/30/97                     13.94          0.15            1.48            1.63        (0.18)        0.00            0.00
 Class B
 12/31/98 +                    15.99          0.13 (a)       (0.03)(a)        0.10        (0.13)        0.00           (1.76)
 06/30/98                      15.37          0.26 (a)        2.73 (a)        2.99        (0.28)        0.00           (2.09)
 01/20/97-
  06/30/97                     13.94          0.11            1.48            1.59        (0.16)        0.00            0.00
 Class C
 12/31/98 +                    16.01          0.13 (a)       (0.02)(a)        0.11        (0.13)        0.00           (1.76)
 06/30/98                      15.37          0.26 (a)        2.74 (a)        3.00        (0.27)        0.00           (2.09)
 01/20/97-
  06/30/97                     13.94          0.11            1.48            1.59        (0.16)        0.00            0.00
Equity Income
 Fund
 Class A
 12/31/98 +                $   0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
</TABLE>    
   
+ Unaudited     
*Annualized
 (a)Per share amounts based upon average number of shares outstanding during
the period.
       
10  PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
<TABLE>   
<CAPTION>
                                                                                               Ratio of Net
                                                                                   Ratio of    Investment
Distributions  Tax Basis                Net Asset                                  Expenses to Income (Loss) to
from           Return of  Total         Value End of              Net Assets End   Average Net Average Net      Portfolio
Equalization   Capital    Distributions Period       Total Return of Period (000s) Assets      Assets           Turnover Rate
- -------------  ---------  ------------- ------------ ------------ ---------------- ----------- ---------------- -------------
<S>            <C>        <C>           <C>          <C>          <C>              <C>         <C>              <C>
 
 
  $   0.00     $   0.00     $  (4.62)     $  24.04       (7.28)%      $144,001         1.31%*        (0.91)%*           41%
      0.00         0.00        (1.94)        31.33       13.87         200,935         1.31          (0.88)             86
      0.00         0.00        (4.91)        29.35       (8.87)        213,484         1.25*         (0.12)*            69
      0.00         0.00        (7.73)        37.36       18.35         134,859         1.13          (0.32)             91
      0.00         0.00        (0.87)        39.08       39.70         120,830         1.20          (0.40)            102
      0.00        (0.11)       (2.37)        28.87       (6.70)         95,261         1.10          (0.60)             78
      0.00         0.00        (0.26)        33.43       70.40         106,666         1.20          (0.60)            105
      0.00         0.00        (1.68)        19.84       21.60          22,454         1.30          (0.20)             94
      0.00         0.00         0.00         17.95       70.90           1,623         1.40*         (0.50)*           145
 
      0.00         0.00        (4.62)        21.67       (7.55)        372,652         2.06*         (1.69)*            41
      0.00         0.00        (1.94)        28.86       13.01         500,011         2.06          (1.63)             86
      0.00         0.00        (4.91)        27.38       (9.40)        629,446         1.97*         (0.95)*            69
      0.00         0.00        (7.73)        35.38       17.47         800,250         1.88          (1.07)             91
      0.00         0.00        (0.87)        37.64       38.60         715,191         1.90          (1.10)            102
      0.00        (0.11)       (2.37)        28.04       (7.40)        553,460         1.90          (1.40)             78
      0.00         0.00        (0.26)        32.77       69.10         618,193         2.00          (1.30)            105
      0.00         0.00        (1.68)        19.60       20.80         179,081         2.00          (1.00)             94
      0.00         0.00        (0.37)        17.87       54.40          58,656         2.00          (0.80)            145
      0.00         0.00        (1.71)        11.93      (14.80)         33,472         1.90          (0.10)            106
      0.00         0.00         0.00         15.78       33.30          51,680         1.90          (0.20)            153
 
 
  $   0.00     $   0.00     $  (1.75)     $  24.82        2.58%       $ 96,706         1.11%*         0.35%*            62%
      0.00         0.00        (1.77)        26.01       32.39          72,803         1.10           0.27              75
      0.00         0.00         0.00         21.16        9.58           6,534         1.11*          0.59*             87
      0.00         0.00        (1.65)        24.57        2.24          50,845         1.86*         (0.42)*            62
      0.00         0.00        (1.75)        25.75       31.39          40,901         1.85          (0.47)             75
      0.00         0.00         0.00         21.10        9.27           3,022         1.85*         (0.26)*            87
 
      0.00         0.00        (1.65)        24.59        2.19          80,709         1.86*         (0.42)*            62
      0.00         0.00        (1.73)        25.78       31.40          71,481         1.85          (0.49)             75
      0.00         0.00         0.00         21.10        9.27          13,093         1.86*         (0.23)*            87
 
 
  $   0.00     $   0.00     $  (1.08)     $  22.97        0.52%       $110,426         1.10%*         0.09%*            45%
      0.00         0.00        (1.37)        24.00       25.71          57,164         1.11           0.07              66
      0.00         0.00         0.00         20.24       11.58          12,184         1.11*          0.17*             82
 
      0.00         0.00        (1.07)        22.67        0.20          93,857         1.86*         (0.68)*            45
      0.00         0.00        (1.33)        23.77       24.76          84,535         1.86          (0.68)             66
      0.00         0.00         0.00         20.17       11.19          28,259         1.85*         (0.58)*            82
 
      0.00         0.00        (1.07)        22.67        0.20         138,504         1.86*         (0.69)*            45
      0.00         0.00        (1.33)        23.77       24.70         140,438         1.86          (0.68)             66
      0.00         0.00         0.00         20.18       11.25          53,686         1.86*         (0.58)*            82
 
 
 
  $   0.00     $   0.00     $  (1.94)     $  14.27        1.41%       $ 15,361         1.11%*         2.48%*            38%
      0.00         0.00        (2.47)        16.04       21.35          12,954         1.11           2.39              45
      0.00         0.00        (0.18)        15.39       11.77           1,756         1.13*          2.85*             45
 
      0.00         0.00        (1.89)        14.20        0.97          18,417         1.85*          1.71*             38
      0.00         0.00        (2.37)        15.99       20.47          15,178         1.85           1.63              45
      0.00         0.00        (0.16)        15.37       11.45           2,561         1.87*          2.11*             45
 
      0.00         0.00        (1.89)        14.23        1.02          24,222         1.86*          1.69*             38
      0.00         0.00        (2.36)        16.01       20.51          23,122         1.85           1.60              45
      0.00         0.00        (0.16)        15.37       11.42           6,624         1.87*          2.15*             45
</TABLE>    

                                                                 
                                                              Prospectus  11    
<PAGE>
 

Financial Highlights (continued)
   
    
<TABLE>   
<CAPTION>
Selected Per Share Data                                 Net Realized/                  Dividends  Dividends in  Distributions
for the Period Ended:    Net Asset Value Net            Unrealized     Total Income    From Net   Excess of Net From Net
                         Beginning       Investment     Gain (Loss) on From Investment Investment Investment    Realized Capital
                         of Period       Income (Loss)  Investments    Operations      Income     Income        Gains
                         --------------- -------------  -------------- --------------- ---------- ------------- ----------------
<S>                      <C>             <C>            <C>            <C>             <C>        <C>           <C>
Renaissance
 Fund (i)
 Class A
 12/31/98 +                 $  19.10        $ 0.01 (a)      $(0.40)(a)    $  (0.39)     $  0.00     $   0.00        $  (2.33)
 06/30/98                      17.73          0.07 (a)        4.91 (a)        4.98        (0.08)        0.00           (3.53)
 10/01/96-
  06/30/97                     16.08          0.12 (a)        3.90 (a)        4.02        (0.12)        0.00           (2.25)
 09/30/96                      14.14          0.23            2.79            3.02        (0.23)       (0.07)          (0.78)
 09/30/95                      12.50          0.36            1.61            1.97        (0.33)        0.00            0.00
 09/30/94                      12.88          0.34           (0.17)           0.17        (0.33)        0.00           (0.22)
 09/30/93                      10.57          0.33            2.30            2.63        (0.32)        0.00            0.00
 09/30/92                       9.92          0.34            0.71            1.05        (0.40)        0.00            0.00
 02/1/91-
  09/30/91                      8.38          0.28            1.54            1.82        (0.28)        0.00            0.00
 Class B
 12/31/98 +                    19.06         (0.06)(a)        0.43 (a)       (0.49)        0.00         0.00           (2.33)
 06/30/98                      17.77         (0.07)(a)        4.91 (a)        4.84        (0.02)        0.00           (3.53)
 10/01/96-
  06/30/97                     16.12          0.03 (a)        3.92 (a)        3.95        (0.05)        0.00           (2.25)
 09/30/96                      14.13          0.09            2.83            2.92        (0.11)       (0.04)          (0.78)
 05/22/95-
  09/30/95                     12.55          0.11            1.55            1.66        (0.08)        0.00            0.00
 Class C
 12/31/98 +                    18.96         (0.06)(a)       (0.40)(a)       (0.46)        0.00         0.00           (2.33)
 06/30/98                      17.69         (0.07)(a)        4.88 (a)        4.81        (0.01)        0.00           (3.53)
 10/01/96-
  06/30/97                     16.05          0.03 (a)        3.90 (a)        3.93        (0.04)        0.00           (2.25)
 09/30/96                      14.09          0.12            2.78            2.90        (0.13)       (0.03)          (0.78)
 09/30/95                      12.47          0.27            1.59            1.86        (0.24)        0.00            0.00
 09/30/94                      12.85          0.24           (0.16)           0.08        (0.24)        0.00           (0.22)
 09/30/93                      10.56          0.25            2.29            2.54        (0.25)        0.00            0.00
 09/30/92                       9.91          0.29            0.68            0.97        (0.32)        0.00            0.00
 09/30/91                       8.16          0.36            1.75            2.11        (0.36)        0.00            0.00
 09/30/90                      11.17          0.49           (2.32)          (1.83)       (0.49)        0.00           (0.69)
 09/30/89                      10.05          0.55            1.19            1.74        (0.62)        0.00            0.00
<CAPTION>
Selected Per Share Data  Distributions
for the Period Ended:    in Excess of
                         Net Realized
                         Capital Gains
                         -------------
<S>                      <C>
Renaissance
 Fund (i)
 Class A
 12/31/98 +                $   0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 09/30/95                      0.00
 09/30/94                      0.00
 09/30/93                      0.00
 09/30/92                      0.00
 02/1/91-
  09/30/91                     0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 05/22/95-
  09/30/95                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                     0.00
 09/30/96                      0.00
 09/30/95                      0.00
 09/30/94                      0.00
 09/30/93                      0.00
 09/30/92                      0.00
 09/30/91                      0.00
 09/30/90                      0.00
 09/30/89                      0.00
 
Value Fund
 Class A
 12/31/98 +                 $  15.64        $ 0.10 (a)      $ 0.07 (a)    $   0.17      $ (0.10)    $   0.00        $  (1.72)
 06/30/98                      14.80          0.19 (a)        2.46 (a)        2.65        (0.18)        0.00           (1.63)
 01/13/97-
  06/30/97                     13.17          0.47            1.26            1.73        (0.10)        0.00            0.00
 Class B
 12/31/98 +                    15.63          0.05 (a)        0.06 (a)        0.11        (0.05)        0.00           (1.72)
 06/30/98                      14.80          0.07 (a)        2.46 (a)        2.53        (0.07)        0.00           (1.63)
 01/13/97-
  06/30/97                     13.16          0.44            1.26            1.70        (0.06)        0.00            0.00
 Class C
 12/31/98 +                    15.63          0.05 (a)        0.06 (a)        0.11        (0.05)        0.00           (1.72)
 06/30/98                      14.80          0.07 (a)        2.46 (a)        2.53        (0.07)        0.00           (1.63)
 01/13/97-
  06/30/97                     13.15          0.43            1.28            1.71        (0.06)        0.00            0.00
Value Fund
 Class A
 12/31/98 +                $   0.00
 06/30/98                      0.00
 01/13/97-
  06/30/97                     0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/13/97-
  06/30/97                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/13/97-
  06/30/97                     0.00
 
Value 25 Fund
 Class A
 07/10/98-
  12/31/98 +                $  10.00        $ 0.12 (a)      $(1.64)(a)    $  (1.52)     $  0.00     $   0.00        $   0.00
 Class B
 07/10/98-
  12/31/98 +                   10.00          0.09 (a)       (1.62)(a)       (1.53)        0.00         0.00            0.00
 Class C
 07/10/98-
  12/31/98 +                   10.00          0.08 (a)       (1.59)(a)       (1.51)        0.00         0.00            0.00
Value 25 Fund
 Class A
 07/10/98-
  12/31/98 +               $   0.00
 Class B
 07/10/98-
  12/31/98 +                   0.00
 Class C
 07/10/98-
  12/31/98 +                   0.00
 
Small-Cap
 Value Fund
 Class A
 12/31/98 +                 $  17.58        $ 0.12 (a)      $(1.82)(a)    $  (1.70)     $ (0.17)    $   0.00        $  (0.45)
 6/30/98                       15.75          0.23 (a)        2.49 (a)        2.72        (0.13)        0.00           (0.76)
 01/20/97-
  06/30/97                     14.02          0.10            1.63            1.73         0.00         0.00            0.00
 Class B
 12/31/98 +                    17.43          0.06 (a)        1.80 (a)        1.74        (0.06)        0.00           (0.45)
 06/30/98                      15.71          0.09 (a)        2.48 (a)        2.57        (0.09)        0.00           (0.76)
 01/20/97-
  06/30/97                     14.02          0.08            1.61            1.69         0.00         0.00            0.00
Small-Cap
 Value Fund
 Class A
 12/31/98 +                $   0.00
 6/30/98                       0.00
 01/20/97-
  06/30/97                     0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
</TABLE>    
   
+ Unaudited     
*Annualized
 (a) Per share amounts based upon average number of shares outstanding during
     the period.
   
 (i) Formerly, the PIMCO Advisors Equity Income Fund. The information provided
     reflects results of operations under the Fund's former investment
     objective and policies through January 31, 1992; such results would not
     necessarily have been achieved had the Fund's current objective and
     policies then been in effect.     
       
12  PIMCO Funds: Multi-Manager Series
<PAGE>
   
    
<TABLE>   
<CAPTION>
                                                                                              Ratio of Net
                                                                                  Ratio of    Investment
Distributions  Tax Basis               Net Asset                                  Expenses to Income (Loss) to
from           Return of Total         Value End of              Net Assets End   Average Net Average Net      Portfolio
Equalization   Capital   Distributions Period       Total Return of Period (000s) Assets      Assets           Turnover Rate
- -------------  --------- ------------- ------------ ------------ ---------------- ----------- ---------------- -------------
<S>            <C>       <C>           <C>          <C>          <C>              <C>         <C>              <C>
  $   0.00     $   0.00    $  (2.33)     $  16.38       (1.10)%      $ 85,787         1.26%*         0.10%*           104%
      0.00         0.00       (3.61)        19.10       30.98          85,562         1.26           0.35             192
      0.00         0.00       (2.37)        17.73       27.53          33,606         1.23*          0.95*            131
      0.00         0.00       (1.08)        16.08       22.37          20,631         1.25           1.60             203
      0.00         0.00       (0.33)        14.14       16.10          12,933         1.30           2.90             177
      0.00         0.00       (0.55)        12.50        1.40          14,942         1.30           2.70             175
      0.00         0.00       (0.32)        12.88       25.30           6,328         1.30           2.90             168
      0.00         0.00       (0.40)        10.57       10.70           2,593         1.40           3.30             149
      0.00         0.00       (0.28)         9.92       34.80              15         1.60*          4.40*            143
 
      0.00         0.00       (2.33)        16.24       (1.66)        116,449         2.01*         (0.64)*           104
      0.00         0.00       (3.55)        19.06       29.99         100,688         2.01          (0.39)            192
      0.00         0.00       (2.30)        17.77       26.88          37,253         1.97*          0.20*            131
      0.00         0.00       (0.93)        16.12       21.54          15,693         2.00           0.85             203
      0.00         0.00       (0.08)        14.13       13.30           1,760         2.10*          2.20*            177
 
      0.00         0.00       (2.33)        16.17       (1.48)        432,876         2.01*         (0.67)*           104
      0.00         0.00       (3.54)        18.96       29.98         469,797         2.01          (0.37)            192
      0.00         0.00       (2.29)        17.69       26.86         313,226         1.97*          0.21*            131
      0.00         0.00       (0.94)        16.05       21.52         230,058         2.00           0.85             203
      0.00         0.00       (0.24)        14.09       15.20         174,316         2.10           2.10             177
      0.00         0.00       (0.46)        12.47        0.70         178,892         2.00           2.00             175
      0.00         0.00       (0.25)        12.85       24.40          94,247         2.10           2.20             168
      0.00         0.00       (0.32)        10.56        9.90          45,101         2.10           2.70             149
      0.00         0.00       (0.36)         9.91       26.50          22,651         2.20           4.20             143
      0.00         0.00       (1.18)         8.16      (18.00)         25,758         2.00           5.10              70
      0.00         0.00       (0.62)        11.17       17.90          45,168         1.90           5.20              85
 
 
 
  $   0.00     $   0.00    $  (1.82)     $  13.99        1.56 %      $ 19,868         1.11%*         1.39 %*           47%
      0.00         0.00       (1.81)        15.64       18.86          21,742         1.11           1.19              77
      0.00         0.00       (0.10)        14.80       13.19          15,648         1.11*          1.71*             71
 
      0.00         0.00       (1.77)        13.97        1.17          34,705         1.86*          0.69*             47
      0.00         0.00       (1.70)        15.63       17.98          35,716         1.86           0.45              77
      0.00         0.00       (0.06)        14.80       12.93          25,433         1.86*          0.96*             71
 
      0.00         0.00       (1.77)        13.97        1.16          82,845         1.86*          0.68*             47
      0.00         0.00       (1.70)        15.63       17.98          88,235         1.86           0.45              77
      0.00         0.00       (0.06)        14.80       13.02          64,110         1.86*          0.97*             71
 
 
 
  $   0.00     $   0.00    $   0.00      $   8.48      (14.68)%      $    500         1.15%*         2.95 %*           35%
 
      0.00         0.00        0.00          8.47      (14.98)            701         1.90           2.17              35
 
      0.00         0.00        0.00          8.49      (14.91)            649         1.90           1.98              35
 
  $   0.00     $   0.00    $  (0.62)     $  15.26       (9.48)%      $ 94,203         1.26%*         1.59 %*           24%
      0.00         0.00       (0.89)        17.58       17.33          75,070         1.25           1.27              41
      0.00         0.00        0.00         15.75       12.34           6,563         1.30*          1.94*             48
 
      0.00         0.00       (0.51)        15.18       (9.85)        107,758         2.01*          0.80*             24
      0.00         0.00       (0.85)        17.43       16.40         110,833         2.00           0.53              41
      0.00         0.00        0.00         15.71       12.05          11,077         2.04*          1.23*             48
</TABLE>    
 
                                                                  
                                                               Prospectus 13    
                                       
<PAGE>
 
Financial Highlights (continued)
 
<TABLE>   
<CAPTION>
Selected Per Share Data                                 Net Realized/                  Dividends  Dividends in  Distributions
for the Period Ended:    Net Asset Value Net            Unrealized     Total Income    From Net   Excess of Net From Net
                         Beginning       Investment     Gain (Loss) on From Investment Investment Investment    Realized Capital
                         of Period       Income (Loss)  Investments    Operations      Income     Income        Gains
                         --------------- -------------  -------------- --------------- ---------- ------------- ----------------
<S>                      <C>             <C>            <C>            <C>             <C>        <C>           <C>
Small-Cap Value
 Fund (Cont.)
 Class C
 12/31/98 +                 $  17.44        $ 0.06 (a)      $(1.81)(a)    $  (1.75)     $ (0.04)    $   0.00        $  (0.45)
 06/30/98                      15.71          0.09 (a)        2.49 (a)        2.58        (0.09)        0.00           (0.76)
 01/20/97-
  06/30/97                     14.02          0.08            1.61            1.69         0.00         0.00            0.00
<CAPTION>
Selected Per Share Data  Distributions
for the Period Ended:    in Excess of
                         Net Realized
                         Capital Gains
                         -------------
<S>                      <C>
Small-Cap Value
 Fund (Cont.)
 Class C
 12/31/98 +                $   0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
 
Tax-Efficient
 Equity Fund
 Class A
 09/30/98-
  12/31/98 +                $  10.00        $ 0.01 (a)      $ 0.52 (a)    $   0.53      $  0.00     $   0.00        $   0.00
 Class B
 09/30/98-
  12/31/98 +                   10.00         (0.02)(a)        0.51 (a)        0.49         0.00         0.00            0.00
 Class C
 09/30/98-
  12/31/98 +                   10.00         (0.02)(a)        0.51 (a)        0.49         0.00         0.00            0.00
Tax-Efficient
 Equity Fund
 Class A
 09/30/98-
  12/31/98 +               $   0.00
 Class B
 09/30/98-
  12/31/98 +                   0.00
 Class C
 09/30/98-
  12/31/98 +                   0.00
 
International
 Fund (ii)
 Class A
 12/31/98 +                 $  14.33        $(0.04)(a)      $ 1.27 (a)    $  (1.31)     $  0.00     $   0.00        $  (1.15)
 06/30/98                      14.26          0.06 (a)        1.13 (a)        1.19         0.00         0.00           (0.82)
 10/01/96-
  06/30/97                     13.03          0.29            1.33            1.62         0.00         0.00           (0.39)
 9/30/96                       12.19          0.07            0.77            0.84         0.00         0.00            0.00
 9/30/95                       12.92          0.07           (0.56)          (0.49)        0.00         0.00           (0.24)
 9/30/94                       12.17          0.04            0.94            0.98         0.00         0.00           (0.23)
 9/30/93                       10.04          0.07            2.80            2.87         0.00         0.00           (0.74)
 9/30/92                       10.54          0.05           (0.37)          (0.32)        0.00         0.00           (0.18)
 2/1/91-9/30/91                 9.48          0.02            1.04            1.06         0.00         0.00            0.00
 Class B
 12/31/98 +                    13.46         (0.09)(a)       (1.22)(a)       (1.31)        0.00         0.00           (1.15)
 06/30/98                      13.56         (0.05)(a)        1.07 (a)        1.02         0.00         0.00           (0.82)
 10/01/96-
  06/30/97                     12.48          0.16            1.31            1.47         0.00         0.00           (0.39)
 9/30/96                       11.75          0.00 (a)        0.73 (a)        0.73         0.00         0.00            0.00
 5/22/95-
  9/30/95                      11.30          0.00            0.45            0.45         0.00         0.00            0.00
 Class C
 12/31/98 +                    13.45         (0.09)(a)       (1.22)(a)       (1.31)        0.00         0.00           (1.15)
 06/30/98                      13.55         (0.06)(a)        1.08 (a)        1.02         0.00         0.00           (0.82)
 10/01/96-
  06/30/97                     12.47          0.18            1.29            1.47         0.00         0.00           (0.39)
 9/30/96                       11.75         (0.05)           0.77            0.72         0.00         0.00            0.00
 9/30/95                       12.56         (0.02)          (0.55)          (0.57)        0.00         0.00           (0.24)
 9/30/94                       11.92         (0.06)           0.93            0.87         0.00         0.00           (0.23)
 9/30/93                        9.92         (0.01)           2.75            2.74         0.00         0.00           (0.74)
 9/30/92                       10.49         (0.06)          (0.33)          (0.39)        0.00         0.00           (0.18)
 9/30/91                       10.04         (0.08)           1.76            1.68         0.00         0.00           (1.23)
 9/30/90                       13.33         (0.10)          (2.02)          (2.12)        0.00         0.00           (1.17)
 9/30/89                       10.07         (0.18)           3.44            3.26         0.00         0.00            0.00
International
 Fund (ii)
 Class A
 12/31/98 +                $   0.00
 06/30/98                     (0.30)
 10/01/96-
  06/30/97                     0.00
 9/30/96                       0.00
 9/30/95                       0.00
 9/30/94                       0.00
 9/30/93                       0.00
 9/30/92                       0.00
 2/1/91-9/30/91                0.00
 Class B
 12/31/98 +                   (0.00)
 06/30/98                     (0.30)
 10/01/96-
  06/30/97                     0.00
 9/30/96                       0.00
 5/22/95-
  9/30/95                      0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                     (0.30)
 10/01/96-
  06/30/97                     0.00
 9/30/96                       0.00
 9/30/95                       0.00
 9/30/94                       0.00
 9/30/93                       0.00
 9/30/92                       0.00
 9/30/91                       0.00
 9/30/90                       0.00
 9/30/89                       0.00
 
Innovation Fund
 Class A
 12/31/98 +                 $  24.28        $(0.12)(a)      $ 7.48 (a)    $   7.36      $  0.00     $   0.00        $  (1.08)
 06/30/98                      17.43         (0.19)(a)        8.21 (a)        8.02         0.00         0.00           (0.99)
 10/01/96-
  06/30/97                     17.26          0.07            0.36            0.43         0.00         0.00           (0.26)
 9/30/96                       14.74         (0.07)           2.94            2.87         0.00         0.00           (0.35)
 12/22/94-
  9/30/95                      10.00         (0.06)(b)        4.80            4.74         0.00         0.00            0.00
 Class B
 012/31/98 +                   23.60         (0.20)(a)        7.23 (a)        7.03         0.00         0.00           (1.08)
 06/30/98                      17.10         (0.33)(a)        8.00 (a)        7.67         0.00         0.00           (0.99)
 10/01/96-
  06/30/97                     17.04         (0.03)           0.35            0.32         0.00         0.00           (0.26)
 9/30/96                       14.66         (0.11)           2.84            2.73         0.00         0.00           (0.35)
 5/22/95-
  9/30/95                      11.81         (0.08)           2.93            2.85         0.00         0.00            0.00
Innovation Fund
 Class A
 12/31/98 +                $  (0.18)
 06/30/98                     (0.18)
 10/01/96-
  06/30/97                     0.00
 9/30/96                       0.00
 12/22/94-
  9/30/95                      0.00
 Class B
 012/31/98 +                  (0.18)
 06/30/98                     (0.18)
 10/01/96-
  06/30/97                     0.00
 9/30/96                       0.00
 5/22/95-
  9/30/95                      0.00
</TABLE>    
   
+Unaudited     
*Annualized
 (a) Per share amounts based upon average number of shares outstanding during
     the period.
   
 (b) Reflecting voluntary waiver of investment advisory fee of $4,666 (0.00
     per share) by the Adviser.     
       
       
          
 (ii) The information provided for the International Fund reflects results of
      operations under the Fund's former investment objective and policies
      through August 31, 1992; such results would not necessarily have been
      achieved had the Fund's current objective and policies then been in
      effect. On November 15, 1994, Blairlogie became the Sub-Adviser of the
      Fund.     
       
14  PIMCO Funds: Multi-Manager Series
<PAGE>
 
<TABLE>   
<CAPTION>
                                                                                              Ratio of Net
                                                                                  Ratio of    Investment
Distributions  Tax Basis               Net Asset                                  Expenses to Income (Loss) to
from           Return of Total         Value End of              Net Assets End   Average Net Average Net      Portfolio
Equalization   Capital   Distributions Period       Total Return of Period (000s) Assets      Assets           Turnover Rate
- -------------  --------- ------------- ------------ ------------ ---------------- ----------- ---------------- -------------
<S>            <C>       <C>           <C>          <C>          <C>              <C>         <C>              <C>
 
 
  $   0.00     $   0.00    $  (0.49)     $  15.20       (9.89)%      $119,567         2.01%*         0.80%*           24%
      0.00         0.00       (0.85)        17.44       16.42         130,466         2.00           0.52              41
      0.00         0.00        0.00         15.71       12.05          20,637         2.05*          1.13*             48
 
 
 
      0.00         0.00        0.00         10.53        5.32           3,612         1.11*          0.32               8
      0.00         0.00        0.00         10.49        4.90           2,728         1.86          (0.35)              8
      0.00         0.00        0.00         10.49        4.90           5,733         1.86          (0.41)              8
 
 
  $   0.00     $   0.00    $  (1.15)     $  11.87       (8.76)%      $  8,659         1.62%*        (0.65)%*           17%
      0.00         0.00       (1.12)        14.33        9.95          12,510         1.48           0.41              60
      0.00         0.00       (0.39)        14.26       12.82          18,287         1.51*          0.58*             59
      0.00         0.00        0.00         13.03        6.89          20,056         1.41           0.49             110
      0.00         0.00       (0.24)        12.19       (3.70)         17,951         1.50           0.60             170
      0.00         0.00       (0.23)        12.92        8.20          23,289         1.40           0.30              55
      0.00         0.00       (0.74)        12.17       30.40          11,992         1.40           0.60              68
      0.00         0.00       (0.18)        10.04       (3.10)            471         1.90           0.50             160
      0.00         0.00        0.00         10.54       17.30              22         1.90*          0.70*            107
 
      0.00         0.00       (1.15)        11.00       (9.35)          8,393         2.34*         (1.47)*            17
      0.00         0.00       (1.12)        13.46        9.17           8,956         2.22          (0.37)             60
      0.00         0.00       (0.39)        13.56       12.17           8,676         2.26*          0.18*             59
      0.00         0.00        0.00         12.48        6.21           5,893         2.16          (0.26)            110
      0.00         0.00        0.00         11.75        4.00             503         2.30*         (0.10)*           170
 
  $   0.00     $   0.00    $  (1.15)     $  10.99       (9.36)%      $110,172         2.34%*        (1.45)%*           17%
      0.00         0.00       (1.12)        13.45        9.18         132,986         2.22          (0.43)             60
      0.00         0.00       (0.39)        13.55       12.18         168,446         2.25*         (0.25)*            59
      0.00         0.00        0.00         12.47        6.13         203,544         2.16          (0.26)            110
      0.00         0.00       (0.24)        11.75       (4.50)        215,349         2.20          (0.20)            170
      0.00         0.00       (0.23)        12.56        7.40         294,492         2.20          (0.50)             55
      0.00         0.00       (0.74)        11.92       29.40         147,194         2.20          (0.10)             68
      0.00         0.00       (0.18)         9.92       (3.80)         28,299         2.60          (0.60)            160
      0.00         0.00       (1.23)        10.49       18.30          33,594         2.60          (0.20)            107
      0.00         0.00       (1.17)        10.04      (17.40)         36,282         2.30          (0.30)             93
      0.00         0.00        0.00         13.33       32.40          56,150         2.30          (0.70)             84
 
 
 
  $   0.00     $   0.00    $  (1.26)     $  30.38       30.86 %      $140,497         1.31%*        (0.93)%*           60%
      0.00         0.00       (1.17)        24.28       48.10          85,800         1.31          (0.94)            100
      0.00         0.00       (0.26)        17.43        2.41          56,215         1.28*         (0.68)*            80
      0.00         0.00       (0.35)        17.26       19.86          50,067         1.31          (0.61)            123
      0.00         0.00        0.00         14.74       47.40          28,239         1.40*         (0.60)*            86
 
      0.00         0.00       (1.26)        29.37       30.35         147,112         2.05*         (1.69)*            60
      0.00         0.00       (1.17)        23.60       46.95          81,130         2.06          (1.69)            100
      0.00         0.00       (0.26)        17.10        1.79          51,472         2.03*         (1.43)*            80
      0.00         0.00       (0.35)        17.04       18.99          33,778         2.06          (1.36)            123
      0.00         0.00        0.00         14.66       24.10           6,509         2.30*         (1.70)*            86
</TABLE>    

 
                                                                 
                                                              Prospectus  15    

<PAGE>
 

Financial Highlights (continued)
 
<TABLE>   
<CAPTION>
Selected Per Share Data                                 Net Realized/                  Dividends  Dividends in  Distributions
for the Period Ended:    Net Asset Value Net            Unrealized     Total Income    From Net   Excess of Net From Net
                         Beginning       Investment     Gain (Loss) on From Investment Investment Investment    Realized Capital
                         of Period       Income (Loss)  Investments    Operations      Income     Income        Gains
                         --------------- -------------  -------------- --------------- ---------- ------------- ----------------
<S>                      <C>             <C>            <C>            <C>             <C>        <C>           <C>
Innovation Fund
 (Cont.)
 Class C
 12/31/98 +                 $  23.59        $(0.20)(a)      $ 7.24 (a)    $   7.04      $  0.00     $   0.00        $  (1.08)
 06/30/98                      17.09         (0.33)(a)        8.00 (a)        7.67         0.00         0.00           (0.99)
 10/01/96-
  06/30/97                     17.04         (0.02)           0.33            0.31         0.00         0.00           (0.26)
 9/30/96                       14.65         (0.15)           2.89            2.74         0.00         0.00           (0.35)
 12/22/94-
  9/30/95                      10.00         (0.13)(b)        4.78            4.65         0.00         0.00            0.00
<CAPTION>
Selected Per Share Data  Distributions
for the Period Ended:    in Excess of
                         Net Realized
                         Capital Gains
                         -------------
<S>                      <C>
Innovation Fund
 (Cont.)
 Class C
 12/31/98 +                $  (0.18)
 06/30/98                     (0.18)
 10/01/96-
  06/30/97                     0.00
 9/30/96                       0.00
 12/22/94-
  9/30/95                      0.00
 
Precious Metals
 Fund (iii)
 Class A
 12/31/98 +                 $   5.33        $ 0.10 (a)      $(0.01)(a)    $   0.09      $ (0.11)    $   0.00        $   0.00
 06/30/98                       8.83          0.04 (a)       (3.54)(a)       (3.50)        0.00         0.00            0.00
 10/01/96-
  06/30/97                     12.12          0.17           (3.29)          (3.12)        0.00         0.00            0.00
 9/30/96                       12.33          0.03           (0.24)          (0.21)        0.00         0.00            0.00
 9/30/95                       14.14          0.07           (1.88)          (1.81)        0.00         0.00            0.00
 9/30/94                       10.32          0.08            3.74            3.82         0.00         0.00            0.00
 9/30/93                        7.54          0.06            2.72            2.78         0.00         0.00            0.00
 9/30/92                        7.51         (0.01)           0.04            0.03         0.00         0.00            0.00
 2/1/91-9/30/91                 7.19         (0.07)           0.39            0.32         0.00         0.00            0.00
 Class B
 12/31/98 +                     5.01          0.09 (a)       (0.02)(a)        0.07        (0.12)        0.00            0.00
 06/30/98                       8.42         (0.01)(a)       (3.40)(a)       (3.41)        0.00         0.00            0.00
 10/01/96-
  06/30/97                     11.62          0.00           (3.03)          (3.03)        0.00         0.00            0.00
 9/30/96                       11.90         (0.03)          (0.25)          (0.28)        0.00         0.00            0.00
 6/15/95-
  9/30/95                      11.61         (0.01)           0.30            0.29         0.00         0.00            0.00
 Class C
 12/31/98 +                     5.00          0.09 (a)       (0.02)(a)        0.07        (0.14)        0.00            0.00
 06/30/98                       8.43          0.00 (a)       (3.43)(a)       (3.43)        0.00         0.00            0.00
 10/01/96-
  06/30/97                     11.62         (0.03)          (2.99)          (3.02)        0.00         0.00            0.00
 9/30/96                       11.90         (0.07)          (0.21)          (0.28)        0.00         0.00            0.00
 9/30/95                       13.75         (0.02)          (1.83)          (1.85)        0.00         0.00            0.00
 9/30/94                       10.11         (0.02)           3.66            3.64         0.00         0.00            0.00
 9/30/93                        7.44         (0.02)           2.69            2.67         0.00         0.00            0.00
 9/30/92                        7.46         (0.06)           0.04           (0.02)        0.00         0.00            0.00
 9/30/91                        9.40         (0.05)          (1.89)          (1.94)        0.00         0.00            0.00
 9/30/90                        9.86         (0.05)          (0.41)          (0.46)        0.00         0.00            0.00
 10/10/88-
  9/30/89                      10.00         (0.05)          (0.08)          (0.13)       (0.01)        0.00            0.00
Precious Metals
 Fund (iii)
 Class A
 12/31/98 +                $   0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                    (0.17)
 9/30/96                       0.00
 9/30/95                       0.00
 9/30/94                       0.00
 9/30/93                       0.00
 9/30/92                       0.00
 2/1/91-9/30/91                0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                    (0.17)
 9/30/96                       0.00
 6/15/95-
  9/30/95                      0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 10/01/96-
  06/30/97                    (0.17)
 9/30/96                       0.00
 9/30/95                       0.00
 9/30/94                       0.00
 9/30/93                       0.00
 9/30/92                       0.00
 9/30/91                       0.00
 9/30/90                       0.00
 10/10/88-
  9/30/89                      0.00
 
Balanced Fund
 Class A
 12/31/98 +                 $  12.11        $ 0.15 (a)      $ 0.14 (a)    $   0.29      $ (0.14)    $   0.00        $  (1.64)
 06/30/98                      11.40          0.29 (a)        1.81 (a)        2.10        (0.30)        0.00           (1.09)
 01/20/97-
  06/30/97                     10.77          0.21            0.58            0.79        (0.16)        0.00            0.00
 Class B
 12/31/98 +                    12.07          0.10 (a)        0.14 (a)        0.24        (0.12)        0.00           (1.64)
 06/30/98                      11.39          0.20 (a)        1.82 (a)        2.02        (0.25)        0.00           (1.09)
 01/20/97-
  06/30/97                     10.77          0.19            0.58            0.77        (0.15)        0.00            0.00
 Class C
 12/31/98 +                    12.07          0.10 (a)        0.15 (a)        0.25        (0.12)        0.00           (1.64)
 06/30/98                      11.39          0.20 (a)        1.82 (a)        2.02        (0.25)        0.00           (1.09)
 01/20/97-
  06/30/97                     10.77          0.18            0.58            0.76        (0.14)        0.00            0.00
Balanced Fund
 Class A
 12/31/98 +                $   0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
 Class B
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
 Class C
 12/31/98 +                    0.00
 06/30/98                      0.00
 01/20/97-
  06/30/97                     0.00
</TABLE>    
   
+ Unaudited     
   
*Annualized     
   
 (a) Per share amounts based upon average number of shares outstanding during
     the period.     
          
 (b) Reflects voluntary waiver of investment advisory fee of $4,666 (0.00 per
     share) by the Adviser.     
   
 (c) Ratio of expenses to average net assets excluding overdraft expense is
     1.26%.     
   
 (d) Ratio of expenses to average net assets excluding overdraft expense is
     2.06%.     
   
 (e) Ratio of expenses to average net assets excluding overdraft expense is
     2.06%.     
   
 (iii) The information provided for the Precious Metals Fund reflects results
       of operations under the Fund's former investment objective and policies
       through November 14, 1994; such results would not necessarily have been
       achieved had the Fund's current objective and policies then been in
       effect.     

16  PIMCO Funds: Multi-Manager Series
<PAGE>
 
<TABLE>   
<CAPTION>
                                                                                                 Ratio of Net
                                                                                  Ratio of       Investment
Distributions  Tax Basis               Net Asset                                  Expenses to    Income to
from           Return of Total         Value End of              Net Assets End   Average Net    Average Net  Portfolio
Equalization   Capital   Distributions Period       Total Return of Period (000s) Assets         Assets       Turnover Rate
- -------------  --------- ------------- ------------ ------------ ---------------- -----------    ------------ -------------
<S>            <C>       <C>           <C>          <C>          <C>              <C>            <C>          <C>
 
 
  $   0.00     $   0.00    $  (1.26)     $  29.37       30.41%       $331,705         2.06%*         (1.69)%*         60%
      0.00         0.00       (1.17)        23.59       46.97         219,258         2.06           (1.69)          100
      0.00         0.00       (0.26)        17.09        1.73         162,889         2.03*          (1.43)*          80
      0.00         0.00       (0.35)        17.04       19.08         137,752         2.06           (1.36)          123
      0.00         0.00        0.00         14.65       46.50          63,952         2.20*          (1.40)*          86
 
 
  $   0.00     $   0.00    $  (0.11)     $   5.31        1.80 %      $  3,576         1.45%*(c)       3.77 %*         35%
      0.00         0.00        0.00          5.33      (39.64)          4,709         1.31(c)         0.70            56
      0.00         0.00       (0.17)         8.83      (26.05)          4,016         1.37*           0.33*           46
      0.00         0.00        0.00         12.12       (1.70)          6,245         1.32            0.19            35
      0.00         0.00        0.00         12.33      (12.80)          7,670         1.40            0.60             9
      0.00         0.00        0.00         14.14       37.00          11,229         1.30            0.60            11
      0.00         0.00        0.00         10.32       36.90           3,425         1.40            0.60            10
      0.00         0.00        0.00          7.54        0.40             668         1.90           (0.10)           30
      0.00         0.00        0.00          7.51        6.80             514         2.10*          (1.40)*          19
 
      0.00         0.00       (0.12)         4.96        1.50           3,974         2.13*(d)        3.33*           35
      0.00         0.00        0.00          5.01      (40.50)          3,889         2.11 (d)       (0.07)           56
      0.00         0.00       (0.17)         8.42      (26.40)          4,248         2.13*          (0.33)*          46
      0.00         0.00        0.00         11.62       (2.35)          2,218         2.07           (0.56)           35
      0.00         0.00        0.00         11.90        2.50             251         2.20*          (0.20)*           9
 
      0.00         0.00       (0.14)         4.93        1.50          15,167         2.15*(e)        3.50*           35
      0.00         0.00        0.00          5.00      (40.69)         16,943         2.11 (e)       (0.07)           56
      0.00         0.00       (0.17)         8.43      (26.31)         25,113         2.15*          (0.41)*          46
      0.00         0.00        0.00         11.62       (2.35)         37,609         2.07           (0.56)           35
      0.00         0.00        0.00         11.90      (13.50)         42,341         2.20           (0.20)            9
      0.00         0.00        0.00         13.75       36.00          62,825         2.10           (0.20)           11
      0.00         0.00        0.00         10.11       35.90          23,884         2.20           (0.20)           10
      0.00         0.00        0.00          7.44       (0.30)          6,633         2.60           (0.80)           30
      0.00         0.00        0.00          7.46      (20.60)          6,995         2.40           (0.80)           19
      0.00         0.00        0.00          9.40       (4.70)          9,918         2.40           (0.80)           23
      0.00         0.00       (0.01)         9.86       (1.30)          6,630         2.50           (0.60)            9
 
 
 
  $   0.00     $   0.00    $  (1.78)     $  10.62        2.93%       $  9,161         1.11%*          2.57%*         100%
      0.00         0.00       (1.39)        12.11       19.40           9,586         1.12            2.47           186
      0.00         0.00       (0.16)        11.40        7.42             366         1.15*           3.01*          199
 
      0.00         0.00       (1.76)        10.55        2.48          11,901         1.85*           1.82*          100
      0.00         0.00       (1.34)        12.07       18.59           8,977         1.86            1.71           186
      0.00         0.00       (0.15)        11.39        7.15           1,124         1.90*           2.28*          199
 
      0.00         0.00       (1.76)        10.56        2.59          11,763         1.86*           1.83*          100
      0.00         0.00       (1.34)        12.07       18.59           8,469         1.86            1.71           186
      0.00         0.00       (0.14)        11.39        7.12             921         1.90*           2.26*          199
</TABLE>    

 
                                                                 
                                                              Prospectus  17    

<PAGE>
 
            Investment Objectives and Policies

               
            The investment objective and general investment policies of each
            Fund are described below. There can be no assurance that the in-
            vestment objective of any Fund will be achieved. Because the mar-
            ket value of each Fund's investments will change, the net asset
            value per share of each Fund will also vary. Specific portfolio
            securities eligible for purchase by the Funds, investment tech-
            niques that may be used by the Funds, and the risks associated
            with these securities and techniques are described more fully un-
            der "Characteristics and Risks of Securities and Investment Tech-
            niques" in this Prospectus and "Investment Objectives and Poli-
            cies" in the Statement of Additional Information. For information
            on other investment policies of the Growth, Target, Opportunity,
            Capital Appreciation, Mid-Cap Growth, Equity Income, Renaissance,
            Value, Value 25, Small-Cap Value, Tax-Efficient Equity, Interna-
            tional, Innovation and Precious Metals Funds (together, the "Stock
            Funds"), see "Investment Objectives and Policies--Stock Funds" be-
            low. This information is also relevant to an investment in the
            Balanced Fund because the Common Stock Segment (as described below
            under "Balanced Fund") of that Fund is managed in accordance with
            the investment policies of the Capital Appreciation and Value
            Funds. For information regarding the average portfolio duration of
            the Fixed Income Securities Segment (as described below under
            "Balanced Fund") of the Balanced Fund, see "Balanced Fund--
            Duration" below.     
 
 
Fund           
DescriptionsGrowth Fund seeks long-term growth of capital. Income is an inci-
            dental consideration. The Fund invests primarily in common stocks
            of companies with market capitalizations of at least $5 billion at
            the time of investment. The Fund may invest a portion of its as-
            sets in securities of foreign issuers traded in foreign securities
            markets (not including Eurodollar certificates of deposit), which
            will not exceed 15% of the Fund's assets at the time of invest-
            ment. Investing in the securities of foreign issuers involves spe-
            cial risks and considerations not typically associated with in-
            vesting in U.S. companies. For a discussion of such risks, see
            "Characteristics and Risks of Securities and Investment Tech-
            niques--Foreign Securities." The Fund may also purchase and write
            call and put options on securities and securities indexes; enter
            into futures contracts and use options on futures contracts; buy
            or sell foreign currencies; and enter into forward foreign cur-
            rency contracts. The Portfolio Manager for the Growth Fund is Ken-
            neth W. Corba of PIMCO Equity Advisors.     
               
            Target Fund seeks capital appreciation. No consideration is given
            to income. The Fund invests primarily in common stocks of
            companies with market capitalizations of between $1 billion and
            $10 billion at the time of investment. The Fund may invest a
            portion of its assets in securities of foreign issuers traded in
            foreign securities markets (not including Eurodollar certificates
            of deposit), which will not exceed 15% of the Fund's assets at the
            time of investment. Investing in the securities of foreign issuers
            involves special risks and considerations not typically associated
            with investing in U.S. companies. For a discussion of such risks,
            see "Characteristics and Risks of Securities and Investment
            Techniques--Foreign Securities." The Fund may also purchase and
            write call and put options on securities and securities indexes;
            enter into futures contracts and use options on futures contracts;
            buy or sell foreign currencies; and enter into forward foreign
            currency contracts. The Portfolio Manager for the Target Fund is
            Kenneth W. Corba of PIMCO Equity Advisors.     
               
            Opportunity Fund seeks capital appreciation. No consideration is
            given to income. The Fund invests primarily in common stocks of
            companies with market capitalizations of less than $2 billion at
            the time of investment. The Fund is intended for aggressive in-
            vestors seeking above-average gains and willing to accept the
            greater risks associated therewith.     
               
               The Fund may invest a portion of its assets in securities of
            foreign issuers traded in foreign securities markets (not includ-
            ing Eurodollar certificates of deposit), which will not exceed 15%
            of the Fund's assets at the time of investment. Investing in the
            securities of foreign issuers involves special risks and consider-
            ations not typically associated with investing in U.S. companies.
            For a discussion of such risks, see "Characteristics and Risks of
            Securities and Investment Techniques--Foreign Securities." The
            Fund may also purchase and write call and put options on securi-
            ties and securi     -

18  PIMCO Funds: Multi-Manager Series

<PAGE>
 
               
            ties indexes; enter into futures contracts and use options on
            futures contracts; buy or sell foreign currencies; and enter into
            forward foreign currency contracts. The Portfolio Manager for the
            Opportunity Fund is Michael F. Gaffney of PIMCO Equity Advisors.
                   
            Capital Appreciation Fund seeks growth of capital. The Fund in-
            vests primarily in common stocks of companies that have improving
            fundamentals (such as growth of earnings and dividends) and whose
            stock is reasonably valued by the market. Stocks for the Fund are
            selected from a universe of the approximately 1,000 largest market
            capitalization stocks, all of which are those of companies with
            market capitalizations of at least $1 billion at the time of in-
            vestment. The Fund usually invests in approximately 60 to 100 com-
            mon stocks. Each issue is screened and ranked using five distinct
            computerized models, including: (i) a dividend growth screen, (ii)
            an equity growth screen, (iii) an earnings growth screen, (iv) an
            earnings momentum screen and (v) an earnings surprise screen. The
            Sub-Adviser believes that the models identify the stocks in the
            universe exhibiting growth characteristics with reasonable valua-
            tions. Stocks are replaced when they score worse-than-median
            screen ranks, have negative earnings surprises, or show poor rela-
            tive price performance. The universe is rescreened frequently to
            obtain a favorable composition of growth and value characteristics
            for the entire Fund. The Portfolio Managers for the Capital Appre-
            ciation Fund are David B. Breed, William B. Bannick, Katherine A.
            Burdon and Peter B. McManus of PIMCO Advisors' subsidiary Cadence.
                   
            Mid-Cap Growth Fund seeks growth of capital. The Fund invests
            primarily in common stocks of middle capitalization companies that
            have improving fundamentals (such as growth of earnings and
            dividends) and whose stock is reasonably valued by the market.
            Stocks for the Fund are selected from a universe of companies with
            market capitalizations in excess of $500 million at the time of
            investment, excluding the 200 companies with the highest market
            capitalization. The Fund usually invests in approximately 60 to
            100 common stocks. Each issue is screened and ranked using five
            distinct computerized models, including: (i) a dividend growth
            screen, (ii) an equity growth screen, (iii) an earnings growth
            screen, (iv) an earnings momentum screen and (v) an earnings
            surprise screen. The Sub-Adviser believes that the models identify
            the stocks in the universe exhibiting growth characteristics with
            reasonable valuations. Stocks are replaced when they score worse-
            than-median screen ranks, have negative earnings surprises, or
            show poor relative price performance. The universe is rescreened
            frequently to obtain a favorable composition of growth and value
            characteristics for the entire Fund. The Portfolio Managers for
            the Mid-Cap Growth Fund are David B. Breed, William B. Bannick,
            Katherine A. Burdon and Peter B. McManus of PIMCO Advisors'
            subsidiary Cadence.     
               
            Equity Income Fund seeks current income as a primary investment
            objective, and long-term growth of capital as a secondary objec-
            tive. The Fund invests primarily in common stocks characterized by
            having below-average price to earnings ("P/E") ratios and higher
            dividend yields relative to their industry groups. In selecting
            securities, the Sub-Adviser classifies a universe of approximately
            2,000 stocks by industry, each of which has a minimum market capi-
            talization of $200 million at the time of investment. The universe
            is then screened to find the lowest P/E ratios in each industry,
            subject to application of quality and price momentum screens. From
            this group, approximately 25 stocks with the highest yields are
            chosen for the Fund. The universe is then rescreened to find the
            highest yielding stock in each industry, subject to application of
            quality and price momentum screens. From this group, approximately
            25 stocks with the lowest P/E ratios are added to the Fund. Al-
            though quarterly rebalancing is a general rule, replacements are
            made whenever an alternative stock within the same industry has a
            significantly lower P/E ratio or higher dividend yield than the
            current Fund holding. The Portfolio Managers for the Equity Income
            Fund are Chris Najork and Benjamin Fischer of PIMCO Advisors' sub-
            sidiary NFJ.     


                                                                
                                                             Prospectus  19    

<PAGE>
 
               
            Renaissance Fund seeks long-term growth of capital and income. The
            Fund invests primarily in common stocks having below-average valu-
            ations whose issuers are experiencing improvements in their busi-
            ness fundamentals. Relative valuation is determined using a multi-
            factor approach that examines characteristics such as price to
            book, price to earnings and price to cash flow ratios. Stocks
            which pass the valuation screen are further analyzed to identify
            the key drivers of financial results and catalysts for change
            which indicate that a company may demonstrate improving fundamen-
            tals in the future. Stocks which appear likely to exceed consensus
            expectations are candidates for addition to the Fund's portfolio.
            Stocks are sold from the Fund's portfolio when the Sub-Adviser be-
            lieves that their ability to exceed investor expectations has di-
            minished or when their valuations have become excessive.     
               
               The Fund may invest a portion of its assets in securities of
            foreign issuers traded in foreign securities markets (not includ-
            ing Eurodollar certificates of deposit), which will not exceed 15%
            of the Fund's assets at the time of investment. Investing in the
            securities of foreign issuers involves special risks and consider-
            ations not typically associated with investing in U.S. securities.
            For a discussion of such risks, see "Characteristics and Risks of
            Securities and Investment Techniques--Foreign Securities." The
            Fund may also purchase and write call and put options on securi-
            ties and securities indexes; enter into futures contracts and use
            options on futures contracts; buy or sell foreign currencies; and
            enter into forward foreign currency contracts. Currently, the
            Portfolio Manager for the Renaissance Fund is Clifford G. Fox of
            PIMCO Advisors' subsidiary Columbus Circle. On or about May 7,
            1999, PIMCO Equity Advisors will assume full portfolio management
            responsibility for the Renaissance Fund. John K. Schneider of
            PIMCO Equity Advisors is expected to become the Portfolio Manager
            of the Fund at that time. See "Management of the Trust--Sub-Advis-
            ers--Columbus Circle."     
               
            Value Fund seeks long-term growth of capital and income. The Fund
            invests primarily in common stocks characterized by having below-
            average P/E ratios relative to their industry groups. In selecting
            securities, the Sub-Adviser classifies a universe of approximately
            2,000 stocks by industry, each of which has a minimum market capi-
            talization of $200 million at the time of investment. The universe
            is then screened to find the stocks with the lowest P/E ratios in
            each industry, subject to application of quality and price momen-
            tum screens. The stocks in each industry with the lowest P/E ra-
            tios that pass the quality and price momentum screens are then se-
            lected for the Fund. The Fund usually invests in approximately 50
            stocks, although the Fund may reduce its holdings below this num-
            ber (normally not below 30 stocks) if the Sub-Adviser believes
            that this would help the Fund to achieve its investment objective.
            Although quarterly rebalancing is a general rule, replacements are
            made whenever an alternative stock within the same industry has a
            significantly lower P/E ratio than the current Fund holdings. The
            Portfolio Managers for the Value Fund are Chris Najork, Benjamin
            Fischer and Paul A. Magnuson of PIMCO Advisors' subsidiary NFJ.
                
               
            Value 25 Fund seeks long-term growth of capital and income. The
            Fund invests primarily in a portfolio of approximately 25 common
            stocks of companies with medium market capitalizations and below-
            average P/E ratios relative to their industry groups. In selecting
            securities, the Sub-Adviser classifies a universe of more than
            2,000 stocks by industry, each of which has a minimum market capi-
            talization of $200 million. The universe is then screened to find
            stocks with the lowest P/E ratios in each industry, subject to ap-
            plication of quality, earnings momentum and price momentum
            screens. Those stocks which pass the screenings and satisfy the
            medium-cap size criteria are further analyzed. Fundamental re-
            search is performed on the companies determined by such process to
            be the most undervalued. Approximately 25 stocks, diversified
            across industries, are selected on an equal-weighted basis for the
            Fund's portfolio. Although quarterly rebalancing is a general
            rule, replacements are made whenever an alternative stock has a
            significantly lower P/E ratio than the current Fund holdings. Be-
            cause the Fund concentrates on approximately 25 stocks at any one
            time (and is not as diversified as many stock funds), it is in-
            tended for aggressive investors seeking above-average     


20  PIMCO Funds: Multi-Manager Series
<PAGE>
 
               
            capital gains and willing to accept the greater risks associated
            therewith. The Portfolio Managers for the Value 25 Fund are Chris
            Najork, Benjamin Fischer and Cliff Hoover of PIMCO Advisors' sub-
            sidiary NFJ.     
               
            Small-Cap Value Fund seeks long-term growth of capital and income.
            The Fund invests primarily in common stocks of companies with mar-
            ket capitalizations between $50 million and $1 billion at the time
            of investment. In selecting securities, the Sub-Adviser divides a
            universe of up to approximately 2,000 stocks into quartiles based
            upon P/E ratio. The lowest quartile in P/E ratio is screened for
            market capitalizations between $50 million and $1 billion, subject
            to application of quality and price momentum screens. Approxi-
            mately 100 stocks with the lowest P/E ratios are combined in the
            Fund, subject to limits on the weighting for any one industry. Al-
            though quarterly rebalancing is a general rule, replacements are
            made whenever a holding achieves a higher P/E ratio than the P/E
            ratio of the Standard & Poor's 500 Composite Stock Price Index
            (the "S&P 500") or its industry average P/E ratio, or when an al-
            ternative stock within the same industry has a significantly lower
            P/E ratio than the current Fund holding. The Fund is intended for
            aggressive investors seeking above-average gains and willing to
            accept the greater risks associated therewith. The Portfolio Man-
            agers for the Small-Cap Value Fund are Chris Najork, Benjamin
            Fischer and Paul A. Magnuson of PIMCO Advisors' subsidiary NFJ.
                   
            Tax-Efficient Equity Fund seeks maximum after-tax growth of capi-
            tal. The Fund attempts to provide a total return which exceeds the
            return of the S&P 500. In addition, the Fund seeks to achieve su-
            perior after-tax returns for its shareholders in part by minimiz-
            ing the taxes they incur in connection with the Fund's investment
            income and realized capital gains by using the strategies de-
            scribed below. Notwithstanding these strategies, the Fund may have
            taxable investment income and may realize taxable gains from time
            to time.     
               
               The Fund invests primarily in a broadly diversified portfolio
            of at least 200 common stocks. Normally, at least 95% of the
            Fund's assets will be invested in stocks represented in the S&P
            500 and the Fund's portfolio is designed to have certain charac-
            teristics that are similar to those of the index. These character-
            istics include such measures as dividend yield, P/E ratio, rela-
            tive volatility, economic sector exposure, return on equity and
            market price-to-book value ratio. However, the Sub-Adviser at-
            tempts to construct a portfolio that produces a higher total re-
            turn than the S&P 500 by using the quantitative security selection
            techniques described below. Of course, there can be no assurance
            that the Fund's investment performance will equal or exceed that
            of the S&P 500.     
               
               In selecting specific securities, the Sub-Adviser uses a pro-
            prietary quantitative model that ranks companies based on long-
            term (5-10 years) price appreciation potential through analysis of
            such factors as growth of sustainable earnings and dividend behav-
            ior. Securities in the top 50% of the model's ranking are consid-
            ered for purchase. The Sub-Adviser's sell discipline incorporates
            a focus on reducing the realization of capital gains. Each sell
            candidate is evaluated based on its cost, current market value,
            and anticipated benefit of replacement. Securities in the bottom
            20% of the model's ranking are considered for sale. The Fund may
            engage in the purchase and writing of options on securities in-
            dexes and may also invest in stock index futures contracts and op-
            tions thereon.     
               
               The Sub-Adviser utilizes a range of active tax management tech-
            niques to minimize taxable distributions, including: low portfolio
            turnover; emphasis towards low-dividend, growth-oriented compa-
            nies; tax lot accounting (identification of specific shares of se-
            curities being sold that have the lowest tax cost); and regular
            rebalancing to capture available tax credits. The Fund will gener-
            ally seek to avoid realizing net short-term capital gains and,
            when realizing gains, will attempt to realize long-term gains
            (i.e., gains on securities held for more than 12 months). The Fund
            intends to notify each shareholder as to that portion of his or
            her capital gain dividends which qualifies for a long-term tax
            rate, generally taxed at a maximum tax rate of 20% in the hands of
            a shareholder who is an individual. Net short-term capital gains,
            when distributed, will be taxed as ordinary income, generally sub-
            ject to graduated tax rates of up to 39.6% for shareholders who
            are individuals. When the Fund decides to sell a particular appre-
            ciated security, it will normally select for sale first those
            share lots with holding periods exceeding 12 months and among
            those, the share lots with the highest cost basis. The Fund may,
            when prudent, sell securities to realize capital losses that can
            be used to offset realized capital gains.     


                                                               
                                                            Prospectus   21    
<PAGE>
 

               
               To protect against price declines in securities holdings with
            large accumulated capital gains, the Fund may, to the extent per-
            mitted by law, use hedging techniques such as the purchase of put
            options, the sale of stock index futures contracts and equity
            swaps. By using these techniques rather than selling such securi-
            ties, the Fund can reduce its exposure to price declines in the
            securities without realizing substantial capital gains. In limited
            circumstances, the Fund may follow the practice of distributing
            selected appreciated securities to meet redemptions of certain in-
            vestors and may, within certain limits, use the selection of secu-
            rities distributed to meet such redemptions as a management tool.
            By distributing appreciated securities the Fund can reduce its po-
            sition in such securities without realizing capital gains. During
            periods of net withdrawals by investors, using distributions of
            securities could enable the Fund to avoid the forced sale of secu-
            rities to raise cash for meeting redemptions.     
               
               It is expected that by employing the various tax-efficient man-
            agement strategies described above, the Fund can minimize the ex-
            tent to which shareholders incur taxes as a result of realized
            capital gains. The Fund may nevertheless realize gains and share-
            holders will incur tax liability from time to time. The Portfolio
            Managers for the Tax-Efficient Equity Fund are David Stein, Tom
            Seto and Cliff Quisenberry of PIMCO Advisors' subsidiary Paramet-
            ric.     
       
               
            International Fund seeks capital appreciation through investments
            in an international portfolio. Income is an incidental considera-
            tion. Under normal market conditions, at least 65% of the Fund's
            total assets will be invested in common stocks, which may or may
            not pay dividends, as well as convertible bonds, convertible pre-
            ferred stocks, warrants, rights or other equity securities, for a
            combination of capital appreciation and income. Convertible secu-
            rities may include securities convertible only by certain classes
            of investors (which may not include the Fund). The Fund may not
            invest in convertible securities which are of less than investment
            grade quality at the time of purchase.     
               
               The Fund will normally invest in securities traded in developed
            foreign securities markets. Particular consideration is given to
            investments principally traded in developed North American (other
            than United States), Japanese, European, Pacific and Australian
            securities markets, and in securities of foreign issuers traded on
            U.S. securities markets. The Fund will also invest in emerging
            markets, where markets may not yet fully reflect the potential of
            the developing economy. There are no prescribed limits on geo-
            graphic asset distribution and the Fund has the authority to in-
            vest in securities traded in securities markets of any country in
            the world. In allocating the Fund's assets among the
                
                      
            various securities markets of any country of the world, the Sub-
            Adviser will consider such factors as the condition and growth po-
            tential of the various economies and securities markets, currency
            and taxation considerations and other pertinent financial, social,
            national and political factors. Under certain adverse investment
            conditions, the Fund may restrict the number of securities markets
            in which its assets will be invested, although under normal market
            circumstances the Fund's investments will include securities prin-
            cipally traded in at least three different countries. The Fund
            will not limit its investments to any particular type or size of
            company.     
               
               The Fund may invest up to 10% of its assets in securities of
            other investment companies, such as closed-end management invest-
            ment companies which invest in foreign markets. The Fund may also
            purchase and write call and put options on securities, securities
            indexes, and on foreign currencies; enter into futures contracts
            and use options on futures contracts, including futures contracts
            on foreign currencies; buy or sell foreign currencies; and enter
            into forward foreign currency contracts. The Fund may utilize
            stock index futures contracts and options thereon for hedging pur-
            poses and also for investment purposes. For instance, the Fund may
            invest in stock index futures contracts and related options as an
            alternative to purchasing individual stocks to adjust its exposure
            to a particular foreign market. See "Characteristics and Risks of
            Securities and Investment Techniques--Derivative Instruments--In-
            dex Futures."     
               
               The Fund will not normally invest in securities of U.S. issuers
            traded on U.S. securities markets. However, when the Sub-Adviser
            believes that conditions in international securities markets war-
            rant a defensive investment strategy, the Fund may invest up to
            100% of its assets in domestic debt, foreign debt and equity secu-
            rities principally traded in the U.S., including money market in-
            struments, obligations issued or guaranteed by the U.S. or a for-
            eign government or their respective agencies, authorities or in-
            strumentalities, or corporate bonds and sponsored American Deposi-
            tory Receipts.     


22  PIMCO Funds: Multi-Manager Series
<PAGE>
 
               
               Investing in the securities of foreign issuers, and particu-
            larly emerging market issuers, involves special risks and consid-
            erations not typically associated with investing in U.S. compa-
            nies. For a discussion of such risks, see "Characteristics and
            Risks of Securities and Investment Techniques--Foreign Securi-
            ties." The Portfolio Manager for the International Fund is James
            Smith of Blairlogie. On or about April 30, 1999, it is anticipated
            that PIMCO Advisors will sell substantially all of its ownership
            interest in Blairlogie (the "Blairlogie Transaction"). The consum-
            mation of the Blairlogie Transaction is subject to a number of
            conditions. PIMCO Advisors has determined to continue to retain
            Blairlogie as Sub-Adviser of the Fund following the Blairlogie
            Transaction. See "Management of the Trust--Sub-Advisers--
            Blairlogie."     
               
            Innovation Fund seeks capital appreciation. No consideration is
            given to income. The Fund invests primarily (i.e., at least 65% of
            its assets) in common stocks of companies which utilize innovative
            technologies to gain a strategic competitive advantage in their
            industry as well as companies that provide and service those tech-
            nologies. Although the Fund emphasizes the utilization of technol-
            ogies, it is not restricted to investment in companies in a par-
            ticular business sector or industry.     
               
               The Fund may invest a portion of its assets in securities of
            foreign issuers traded in foreign securities markets (not includ-
            ing Eurodollar certificates of deposit), which will not exceed 15%
            of the Fund's assets at the time of investment. Investing in the
            securities of foreign issuers involves special risks and consider-
            ations not typically associated with investing in U.S. companies.
            For a discussion of such risks, see "Characteristics and Risks of
            Securities and Investment Techniques--Foreign Securities." The
            Fund may also purchase and write call and put options on securi-
            ties and securities indexes; enter into futures contracts and use
            options on futures contracts; buy or sell foreign currencies; and
            enter into forward foreign currency contracts. The Portfolio Man-
            ager for the Innovation Fund is Dennis P. McKechnie of PIMCO Eq-
            uity Advisors.     
               
            Precious Metals Fund seeks capital appreciation. No consideration
            is given to income. The Fund concentrates investments in a global
            portfolio of common stocks of companies principally engaged in
            precious metals-related activities, which include companies prin-
            cipally engaged in the extraction, processing, distribution or
            marketing of precious metals (the "precious metals industry"). A
            particular company is deemed to be "principally engaged" in the
            precious metals industry if at the time of investment the Sub-Ad-
            viser considers that at least 50% of the company's assets, reve-
            nues or profits are derived from the precious metals industry.
            Normally, at least 65% of the assets of the Fund will be invested
            in the precious metals industry and in securities the value of
            which is linked to the price of a precious metal. See "Character-
            istics and Risks of Securities and Investment Techniques--Precious
            Metals."     
               
               The Fund will seek to identify securities of companies which,
            based upon the Sub-Adviser's evaluation of their fundamental in-
            vestment characteristics, are undervalued in comparison to the
            present or anticipated value of the precious metals relevant to
            them. Examples of precious metals include gold, silver and plati-
            num. To the extent permitted by federal tax law, the Fund may in-
            vest directly in gold bullion and other precious metals. Although
            the Fund reserves the right to do so at any time, as of the date
            of this Prospectus, it does not have the present intention to in-
            vest directly in any precious metals other than gold.     
               
               Although the Fund reserves the right to do so at any time, as
            of the date of this Prospectus, it does not have the present in-
            tention to invest more than 10% of its assets in either precious
            metals, such as gold bullion, or in futures on precious metals,
            such as gold futures, and options thereon, or to invest more than
            5% of its assets in securities the value of which is linked to the
            price of a single precious metal. The Fund may invest up to 100%
            of its assets in securities of companies whose assets, revenues or
            profits are derived from a single precious metal.     
               
               The Fund may invest up to 100% of its assets in securities
            principally traded on foreign securities markets and in securities
            of foreign issuers that are traded on U.S. securities markets or
            on foreign securities markets. Investing in the securities of for-
            eign issuers involves special risks and considerations not typi-
            cally associated with investing in U.S. companies. For a discus-
            sion of such risks, see "Characteristics and Risks of Securities
            and Investment Techniques--Foreign     
 

                                                               
                                                            Prospectus   23    

<PAGE>
 

               
            Securities." The Fund may also purchase and write call and put op-
            tions on securities, securities indexes, commodity indexes, and on
            foreign currencies; enter into futures contracts and use options
            on futures contracts, including futures contracts on stock index-
            es, foreign currencies, and precious metals; buy or sell foreign
            currencies; and enter into forward foreign currency contracts.
                   
               The Fund, because of its emphasis on one industrial sector,
            should be considered as one aspect of a diversified portfolio and
            may not be suitable by itself as a balanced investment program.
            The Portfolio Manager for the Precious Metals Fund is Henry J.
            Bingham of Van Eck.     
                   
               
            Balanced Fund seeks total return consistent with prudent invest-
            ment management. The Fund attempts to achieve this objective
            through a management policy of investing in the following asset
            classes: common stock, fixed income securities, and money market
            instruments. The proportion of the Fund's total assets allocated
            among common stocks, fixed income securities, and money market in-
            struments will vary from time to time and will be determined by
            the Adviser. In determining the allocation of the Fund's assets
            among the three asset classes, the Adviser will employ asset allo-
            cation principles which take into account certain economic fac-
            tors, market conditions, and the expected relative total return
            and risk of the various asset classes. Under normal circumstances,
            it is anticipated that the Fund will generally maintain a balance
            among the types of securities in which it invests. Thus, the Fund
            will normally maintain 40% to 65% of its assets in common stock,
            at least 25% of its assets in fixed income securities, and less
            than 10% of its assets in money market instruments. However, in no
            event would the Fund invest in any common stock if, at the time of
            investment, more than 80% of the Fund's assets would be invested
            in common stock; in no event would the Fund invest in a fixed in-
            come security (other than a short-term instrument) if, at the time
            of investment, more than 80% of the Fund's assets would be in-
            vested in fixed income securities; nor would the Fund invest in a
            money market instrument if, at the time of investment, more than
            60% of its assets would be invested in money market instruments.
                   
               In managing the Fund, the Adviser uses a specialist approach
            and has engaged three of the Trust's Sub-Advisers to manage cer-
            tain portions of the Fund's assets. The portion of the assets of
            the Fund allocated by the Adviser for investment in common stock
            (the "Common Stock Segment") will be further allocated by the Ad-
            viser for investment by NFJ and Cadence. The portion of the Common
            Stock Segment allocated to NFJ will be managed in accordance with
            the investment policies of, and by the same Portfolio Managers as,
            the Value Fund; the portion allocated to Cadence will be managed
            in accordance with the investment policies of, and by the same
            Portfolio Managers as, the Capital Appreciation Fund. Allocations
            of the Common Stock Segment to NFJ and Cadence will vary from time
            to time as determined by the Adviser.     
               
               The portion of the assets of the Fund allocated by the Adviser
            for investment in fixed income securities (the "Fixed Income Secu-
            rities Segment") will be managed by William H. Gross of PIMCO Ad-
            visors' affiliate Pacific Investment Management. The Fund may in-
            vest the Fixed Income Securities Segment in the following types of
            securities: securities issued or guaranteed by the U.S. Govern-
            ment, its agencies or instrumentalities; corporate debt securi-
            ties, including convertible securities and corporate commercial
            paper; mortgage-related and other asset-backed securities; infla-
            tion-indexed bonds issued by both governments and corporations;
            structured notes, including hybrid or "indexed" securities, catas-
            trophe bonds and loan participations; delayed funding loans and
            revolving credit facilities; bank certificates of deposit, fixed
            time deposits and bankers' acceptances; repurchase agreements and
            reverse repurchase agreements; obligations of foreign governments
            or their subdivisions, agencies and instrumentalities; and obliga-
            tions of international agencies or supranational entities. Fixed
            income securities may have fixed, variable, or floating rates of
            interest.     
               
               The Fund invests the Fixed Income Securities Segment in fixed
            income securities of varying maturities. Portfolio holdings will
            be concentrated in areas of the bond market (based on quality,
            sector, coupon or maturity) that Pacific Investment Management be-
            lieves to be relatively undervalued. Fixed income securities in
            which the Fund may invest will, at the time of investment, be
            rated Baa or better by Moody's Investors Service, Inc.
            ("Moody's"), BBB or better by Standard & Poor's Ratings Services
            ("S&P") or, if not rated by Moody's or S&P, will be of comparable
            quality as     
 
24  PIMCO Funds: Multi-Manager Series
<PAGE>
 
               
            determined by Pacific Investment Management, except that up to 10%
            of the Fixed Income Securities Segment may be invested in lower
            rated securities that are rated B or higher by Moody's or S&P or,
            if not rated by Moody's or S&P, determined by Pacific Investment
            Management to be of comparable quality. High yield fixed income
            securities rated lower than Baa by Moody's or BBB by S&P, or of
            equivalent quality, are not considered to be investment grade, and
            are commonly referred to as "junk bonds." Securities rated below
            investment grade and comparable unrated securities are subject to
            greater risks than higher quality fixed income securities. See
            "Characteristics and Risks of Securities and Investment Tech-
            niques--Risks of High Yield Securities ("Junk Bonds")." The Fund
            also may invest up to 20% of the Fixed Income Securities Segment
            in securities denominated in foreign currencies, and may invest
            beyond this limit in U.S. dollar-denominated securities of foreign
            issuers. Investing in securities denominated in foreign currencies
            and securities of foreign issuers involves special risks and con-
            siderations not typically associated with investing in U.S. secu-
            rities. For a discussion of such risks, see "Characteristics and
            Risks of Securities and Investment Techniques--Foreign Securi-
            ties."     
               
               Each Sub-Adviser generally invests a portion of its allocation
            in liquid securities to facilitate redemptions. In addition, PIMCO
            Advisors reserves the right to allocate a portion of the Fund's
            assets (the "Money Market Segment") for investment in money market
            instruments and reserves the right to manage the investment of
            such assets. Because of the Fund's flexible investment policy,
            portfolio turnover may be greater than for a fund that does not
            allocate assets among various types of securities. See "Character-
            istics and Risks of Securities and Investment Techniques--Portfo-
            lio Turnover."     
               
               The Fund may engage in the purchase and writing of put and call
            options on debt securities and securities indexes and may also
            purchase or sell interest rate futures contracts, stock index
            futures contracts, and options thereon. The Fund also may enter
            into swap agreements with respect to foreign currencies, interest
            rates, and securities indexes. With respect to securities of the
            Fixed Income Securities Segment denominated in foreign currencies,
            the Fund may engage in foreign currency exchange transactions by
            means of buying or selling foreign currencies on a spot basis, en-
            tering into forward foreign currency contracts, and buying and
            selling foreign currency options, foreign currency futures, and
            options on foreign currency futures. Foreign currency exchange
            transactions may be entered into for the purpose of hedging
            against foreign currency exchange risk arising from the Fund's in-
            vestment or anticipated investment in securities denominated in
            foreign currencies and for purposes of increasing exposure to a
            particular foreign currency or to shift exposure to foreign cur-
            rency fluctuations from one country to another.     
               
               Duration. Under normal circumstances, the average portfolio du-
            ration of the Fixed Income Securities Segment of the Balanced Fund
            will vary within a three- to six-year time frame based on Pacific
            Investment Management's forecast for interest rates. Duration is a
            measure of the expected life of a fixed income security that was
            developed as a more precise alternative to the concept of "term to
            maturity." Traditionally, a fixed income security's "term to matu-
            rity" has been used as proxy for the sensitivity of the security's
            price to changes in interest rates (which is the "interest rate
            risk" or "volatility" of the security). However, "term to maturi-
            ty" measures only the time until a fixed income security provides
            its final payment, taking no account of the pattern of the
            security's payments prior to maturity. In contrast, duration in-
            corporates a bond's yield, coupon interest payments, final matu-
            rity and call features into one measure of the average life of a
            fixed income security on a present value basis. Duration manage-
            ment is one of the fundamental tools used by Pacific Investment
            Management for the Fixed Income Securities Segment of the Balanced
            Fund. For more information on investments in fixed income securi-
            ties, see "Characteristics and Risks of Securities and Investment
            Techniques" in this Prospectus and "Investment Objectives and Pol-
            icies" in the Statement of Additional Information.     
 
Stock Funds    
            The Capital Appreciation, Mid-Cap Growth, Equity Income, Value,
            Value 25, Small-Cap Value and Tax-Efficient Equity Funds will each
            invest primarily (normally at least 65% of its assets) in common
            stock. Each of these Funds may maintain a portion of its assets,
            which will usually not exceed 10%, in U.S. Government securities,
            high quality debt securities (whose maturity or remaining maturity
            will not exceed five years), money market obligations, and in cash
            to provide for payment of the Fund's expenses and to meet redemp-
            tion requests. It is the policy of these Funds to be as fully in-
            vested in common stocks as practicable at all times. This policy
            precludes these Funds from investing in debt securities     
 

                                                                
                                                             Prospectus  25    

<PAGE>
 

            as a defensive investment posture (although these Funds may invest
            in such securities to provide for payment of expenses and to meet
            redemption requests). Accordingly, investors in these Funds bear
            the risk of general declines in stock prices and the risk that a
            Fund's exposure to such declines cannot be lessened by investment
            in debt securities. These Funds may also invest in convertible se-
            curities, preferred stocks, and warrants, subject to certain
            limitations.
               
               The Growth, Target, Opportunity, Renaissance, International,
            Innovation and Precious Metals Funds will each invest primarily
            (normally at least 65% of its assets) in common stocks, and may
            also invest in other equity securities, including preferred stocks
            and securities (including debt securities and warrants) convert-
            ible into or exercisable for common stocks. Each of these Funds
            may invest a portion of its assets in debt securities and, for
            temporary defensive purposes, up to 100% of its assets in short-
            term U.S. Government securities and other money market instru-
            ments.     
               
               One or more of the Stock Funds may temporarily not be invested
            primarily in equity securities immediately following the commence-
            ment of operations or after receipt of significant new monies.
            While attempting to identify suitable investments, the Funds may
            hold assets in cash, short-term U.S. Government securities and
            other money market instruments. Any of the Stock Funds may tempo-
            rarily not contain the number of securities in which the Fund nor-
            mally invests if the Fund does not have sufficient assets to be
            fully invested, or pending the Sub-Adviser's ability to prudently
            invest new monies.     
               
               The Stock Funds may also lend portfolio securities; enter into
            repurchase agreements and reverse repurchase agreements (subject
            to the Funds' investment limitations described below); purchase
            and sell securities on a when-issued or delayed delivery basis;
            and enter into forward commitments to purchase securities. Each of
            the Stock Funds may invest in American Depository Receipts
            ("ADRs"). In addition, the Growth, Target, Opportunity, Renais-
            sance, International, Innovation and Precious Metals Funds may in-
            vest in European Depository Receipts ("EDRs") and Global Deposi-
            tory Receipts ("GDRs"). The Stock Funds that invest primarily in
            securities of foreign issuers may invest a portion of their assets
            in debt securities and money market obligations issued by U.S. and
            foreign issuers that are either U.S. dollar-denominated or denomi-
            nated in foreign currency. For more information on these and other
            investment practices, see "Characteristics and Risks of Securities
            and Investment Techniques" in this Prospectus and "Investment Ob-
            jectives and Policies" in the Statement of Additional Information.
                
            Characteristics and Risks of
            Securities and Investment Techniques
 
            The different types of securities and investment techniques used
            by the individual Funds all have attendant risks of varying de-
            grees. For example, with respect to common stock, there can be no
            assurance of capital appreciation, and there is a risk of market
            decline. With respect to debt securities, including money market
            instruments, there is the risk that the issuer of a security may
            not be able to meet its obligation to make scheduled interest or
            principal payments. Because each Fund seeks a different investment
            objective and has different investment policies, each is subject
            to varying degrees of financial, market and credit risks. There-
            fore, investors should carefully consider the investment objec-
            tive, investment policies and potential risks of any Fund or Funds
            before investing.
               The following describes potential risks associated with differ-
            ent types of investment techniques that may be used by the indi-
            vidual Funds. For more detailed information on these investment
            techniques, as well as information on the types of securities in
            which some or all of the Funds may invest, see the Statement of
            Additional Information.
               
            Certain of the Funds may invest in common stock of companies with
            market capitalizations that are small compared to other publicly
            traded companies. Generally, small market capitalization is con-
            sidered to be less than $1.5 billion and large market capitaliza-
            tion is considered to be more than $5 billion. Under normal market
            conditions, the Opportunity Fund will invest primarily in compa-
            nies with market capitalizations of less than $2 billion and the
            Small-Cap Value Fund will invest primarily in companies with mar-
            ket capitalizations of between $50 million and $1 billion. Invest-
            ments in larger companies present certain advantages in that such
            companies generally have greater financial     
InvestmentsIn
Companies
With Small
and Medium
Market
Capitalizations
 
26  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            resources, more extensive research and development, manufacturing,
            marketing and service capabilities, and more stability and greater
            depth of management and technical personnel. Investments in small-
            er, less seasoned companies may present greater opportunities for
            growth but also may involve greater risks than customarily are as-
            sociated with more established companies. The securities of
            smaller companies may be subject to more abrupt or erratic market
            movements than larger, more established companies. These companies
            may have limited product lines, markets or financial resources, or
            they may be dependent upon a limited management group. Their secu-
            rities may be traded in the over-the-counter market or on a re-
            gional exchange, or may otherwise have limited liquidity. As a re-
            sult of owning large positions in this type of security, a Fund is
            subject to the additional risk of possibly having to sell portfo-
            lio securities at disadvantageous times and prices if redemptions
            require the Fund to liquidate its securities positions. In addi-
            tion, it may be prudent for a Fund with a relatively large asset
            size to limit the number of relatively small positions it holds in
            securities having limited liquidity in order to minimize its expo-
            sure to such risks, to minimize transaction costs, and to maximize
            the benefits of research. As a consequence, as a Fund's asset size
            increases, the Fund may reduce its exposure to illiquid small cap-
            italization securities, which could adversely affect performance.
               Many of the Funds may also invest in stocks of companies with
            medium market capitalizations. Whether a U.S. issuer's market cap-
            italization is medium is determined by reference to the capital-
            ization for all issuers whose equity securities are listed on a
            United States national securities exchange or which are reported
            on NASDAQ. Issuers with market capitalizations within the range of
            capitalization of companies included in the S&P Mid Cap 400 Index
            may be regarded as being issuers with medium market capitaliza-
            tions. Such investments share some of the risk characteristics of
            investments in stocks of companies with small market capitaliza-
            tions described above, although such companies tend to have longer
            operating histories, broader product lines and greater financial
            resources and their stocks tend to be more liquid and less vola-
            tile than those of smaller capitalization issuers.
 
ForeignSecurities
               
            The International Fund may invest directly in foreign equity secu-
            rities; U.S. dollar- or foreign currency-denominated foreign cor-
            porate debt securities; foreign preferred securities; certificates
            of deposit, fixed time deposits and bankers' acceptances issued by
            foreign banks; and obligations of foreign governments or their
            subdivisions, agencies and instrumentalities, international agen-
            cies and supranational entities. The Precious Metals Fund may in-
            vest primarily in securities of foreign issuers, securities denom-
            inated in foreign currencies, securities principally traded on se-
            curities markets outside of the United States and in securities of
            foreign issuers that are traded on U.S. securities markets. The
            Balanced Fund may invest up to 20% of its Fixed Income Securities
            Segment in securities denominated in foreign currencies, and may
            invest beyond this limit in U.S. dollar-denominated securities of
            foreign issuers. The Growth, Target, Opportunity, Renaissance and
            Innovation Funds may invest up to 15% of their respective assets
            in securities which are traded principally in securities markets
            outside the United States (Eurodollar certificates of deposit are
            excluded for purposes of these limitations), and may invest with-
            out limit in securities of foreign issuers that are traded in U.S.
            markets.     
               
               All of the Funds may invest in ADRs. In addition, the Growth,
            Target, Opportunity, Renaissance, International, Innovation and
            Precious Metals Funds may invest in EDRs and GDRs. ADRs are dol-
            lar-denominated receipts issued generally by domestic banks and
            representing the deposit with the bank of a security of a foreign
            issuer, and are publicly traded on exchanges or over-the-counter
            in the United States. EDRs are receipts similar to ADRs and are
            issued and traded in Europe. GDRs may be offered privately in the
            United States and also trade in public or private markets in other
            countries.     
               Investing in the securities of issuers in any foreign country
            involves special risks and considerations not typically associated
            with investing in U.S. companies. Shareholders should consider
            carefully the substantial risks involved in investing in securi-
            ties issued by companies and governments of foreign nations. These
            risks include: differences in accounting, auditing and financial
            reporting standards; generally higher commission rates on foreign
            portfolio transactions; the possibility of nationalization, expro-
            priation or confiscatory taxation; adverse changes in investment
            or exchange control regulations (which may include suspension of
            the ability to transfer currency from a country); and political
            instability which could affect U.S. investments in foreign coun-
            tries. Individual foreign economies may differ
 

                                                               
                                                            Prospectus   27    

<PAGE>
 

            favorably or unfavorably from the U.S. economy in such respects as
            growth of gross domestic product, rate of inflation, capital rein-
            vestment, resources, self-sufficiency, and balance of payments po-
            sition. The securities markets, values of securities, yields, and
            risks associated with securities markets may change independently
            of each other. Additionally, foreign securities and dividends and
            interest payable on those securities may be subject to foreign
            taxes, including taxes withheld from payments on those securities.
            Foreign securities often trade with less frequency and volume than
            domestic securities and therefore may exhibit greater price vola-
            tility. Additional costs associated with an investment in foreign
            securities may include higher custodial fees than apply to domes-
            tic custodial arrangements and transaction costs of foreign cur-
            rency conversions. Changes in foreign exchange rates also will af-
            fect the value of securities denominated or quoted in currencies
            other than the U.S. dollar.
               A Fund's investments in foreign currency denominated debt obli-
            gations and hedging activities will likely produce a difference
            between its book income and its taxable income. This difference
            may cause a portion of the Fund's income distributions to consti-
            tute returns of capital for tax purposes or require the Fund to
            make distributions exceeding book income to qualify as a regulated
            investment company for federal tax purposes.
               Certain of the Funds may invest in the securities of issuers
            based in countries with developing economies. Investing in devel-
            oping (or "emerging market") countries involves certain risks not
            typically associated with investing in U.S. securities, and im-
            poses risks greater than, or in addition to, risks of investing in
            foreign, developed countries. A number of emerging market coun-
            tries restrict, to varying degrees, foreign investment in securi-
            ties. Repatriation of investment income, capital, and the proceeds
            of sales by foreign investors may require governmental registra-
            tion and/or approval in some emerging market countries. A number
            of the currencies of emerging market countries have experienced
            significant declines against the U.S. dollar in recent years, and
            devaluation may occur subsequent to investments in these curren-
            cies by a Fund. Inflation and rapid fluctuations in inflation
            rates have had, and may continue to have, negative effects on the
            economies and securities markets of certain emerging market coun-
            tries. Many of the emerging securities markets are relatively
            small, have low trading volumes, suffer periods of relative illi-
            quidity, and are characterized by significant price volatility.
            There is a risk in emerging market countries that a future eco-
            nomic or political crisis could lead to price controls, forced
            mergers of companies, expropriation or confiscatory taxation, sei-
            zure, nationalization, or creation of government monopolies, any
            of which may have a detrimental effect on a Fund's investment.
               Additional risks of investing in emerging market countries may
            include: currency exchange rate fluctuations; greater social, eco-
            nomic and political uncertainty and instability (including the
            risk of war); more substantial governmental involvement in the
            economy; less governmental supervision and regulation of the secu-
            rities markets and participants in those markets; unavailability
            of currency hedging techniques in certain emerging market coun-
            tries; the fact that companies in emerging market countries may be
            newly organized and may be smaller and less seasoned companies;
            the difference in, or lack of, auditing and financial reporting
            standards, which may result in unavailability of material informa-
            tion about issuers; the risk that it may be more difficult to ob-
            tain and/or enforce a judgment in a court outside the United
            States; and significantly smaller market capitalization of securi-
            ties markets. Also, any change in the leadership or policies of
            emerging market countries, or the countries that exercise a sig-
            nificant influence over those countries, may halt the expansion of
            or reverse the liberalization of foreign investment policies now
            occurring and adversely affect existing investment opportunities.
               In addition, emerging securities markets may have different
            clearance and settlement procedures, which may be unable to keep
            pace with the volume of securities transactions or otherwise make
            it difficult to engage in such transactions. Settlement problems
            may cause a Fund to miss attractive investment opportunities, hold
            a portion of its assets in cash pending investment, or delay in
            disposing of a portfolio security. Such a delay could result in
            possible liability to a purchaser of the security.
 
28  PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
            Special Risks of Investing in Russian and Other Eastern European
            Securities  The International Fund may invest a portion of its as-
            sets in securities of issuers located in Russia and in other East-
            ern European countries. While investments in securities of such
            issuers are subject generally to the same risks associated with
            investments in other emerging market countries described above,
            the political, legal and operational risks of investing in Russian
            and other Eastern European issuers, and of having assets custodied
            within these countries, may be particularly acute. A risk of par-
            ticular note with respect to direct investment in Russian securi-
            ties is the way in which ownership of shares of companies is nor-
            mally recorded. When a Fund invests in a Russian issuer, it will
            normally receive a "share extract," but that extract is not le-
            gally determinative of ownership. The official record of ownership
            of a company's share is maintained by the company's share regis-
            trar. Such share registrars are completely under the control of
            the issuer, and investors are provided with few legal rights
            against such registrars. Please refer to "Investment Objectives
            and Policies-Foreign Securities" in the Statement of Additional
            Information for a more complete description of these and other
            risks associated with investments in securities of Russian and
            other Eastern European issuers.
 
Foreign        
Currency    Foreign currency exchange rates may fluctuate significantly over
Transactionsshort periods of time. They generally are determined by the forces
            of supply and demand in the foreign exchange markets and the rela-
            tive merits of investments in different countries, actual or per-
            ceived changes in interest rates and other complex factors, as
            seen from an international perspective. Currency exchange rates
            also can be affected unpredictably by intervention (or the failure
            to intervene) by U.S. or foreign governments or central banks, or
            by currency controls or political developments in the U.S. or
            abroad. For example, significant uncertainty surrounds the recent
            introduction of the euro (a common currency unit for the European
            Union) in January 1999 and its effect on the value of securities
            denominated in local European currencies. These and other curren-
            cies in which the Funds' assets are denominated may be devalued
            against the U.S. dollar, resulting in a loss to the Funds. For a
            more complete discussion of foreign currency risks (including
            those associated with the euro), please see "Investment Objectives
            and Policies--Foreign Currencies" in the Statement of Additional
            Information.     
               
               The Growth, Target, Opportunity, Renaissance, International,
            Innovation, Precious Metals and Balanced Funds may enter into for-
            ward foreign currency exchange contracts to reduce the risks of
            adverse changes in foreign exchange rates. In addition, the Inter-
            national, Precious Metals and Balanced Funds may buy and sell for-
            eign currency futures contracts and options on foreign currencies
            and foreign currency futures. A forward foreign currency exchange
            contract involves an obligation to purchase or sell a specific
            currency at a future date, which may be any fixed number of days
            from the date of the contract agreed upon by the parties, at a
            price set at the time of the contract. By entering into a forward
            foreign currency exchange contract, the Fund "locks in" the ex-
            change rate between the currency it will deliver and the currency
            it will receive for the duration of the contract. As a result, a
            Fund reduces its exposure to changes in the value of the currency
            it will deliver and increases its exposure to changes in the value
            of the currency it will exchange into. The effect on the value of
            a Fund is similar to selling securities denominated in one cur-
            rency and purchasing securities denominated in another currency.
            Contracts to sell foreign currency would limit any potential gain
            which might be realized by a Fund if the value of the hedged cur-
            rency increases. A Fund may enter into these contracts for the
            purpose of hedging against foreign exchange risk arising from the
            Fund's investment or anticipated investment in securities denomi-
            nated in foreign currencies. Suitable hedging transactions may not
            be available in all circumstances and there can be no assurance
            that a Fund will engage in such transactions at any given time or
            from time to time. Also, such transactions may not be successful
            and may eliminate any chance for a Fund to benefit from favorable
            fluctuations in relevant foreign currencies. The International
            Fund may also enter into hedging contracts for purposes of in-
            creasing exposure to a foreign currency or to shift exposure to
            foreign currency fluctuations from one currency to another. To the
            extent that it does so, the International Fund will be subject to
            the additional risk that the relative value of currencies will be
            different than anticipated by the Fund's Sub-Adviser. The Interna-
            tional may use one currency (or a basket of currencies) to hedge
            against adverse changes in the value of another currency (or a
            basket of currencies) when exchange rates between the two curren-
            cies are positively correlated. The Fund will segregate assets de-
            termined to be liquid by the     
 

                                                                
                                                             Prospectus   29    

<PAGE>
 

               
            Adviser or a Sub-Adviser in accordance with procedures established
            by the Board of Trustees to cover its obligations under forward
            foreign currency exchange contracts entered into for non-hedging
            purposes.     
 
Money       Each of the Funds may invest at least a portion of its assets in
Market      the following kinds of money market instruments:
Instruments    (1)short-term U.S. Government securities;
                  
               (2) certificates of deposit, bankers' acceptances and other
                   bank obligations rated in the two highest rating categories
                   by at least two NRSROs, or, if rated by only one NRSRO, in
                   such agency's two highest grades, or, if unrated,
                   determined to be of comparable quality by the Adviser or a
                   Sub-Adviser. Bank obligations must be those of a bank that
                   has deposits in excess of $2 billion or that is a member of
                   the Federal Deposit Insurance Corporation. A Fund may
                   invest in obligations of U.S. branches or subsidiaries of
                   foreign banks ("Yankee dollar obligations") or foreign
                   branches of U.S. banks ("Eurodollar obligations");     
                  
               (3) commercial paper rated in the two highest rating categories
                   by at least two NRSROs, or, if rated by only one NRSRO, in
                   such agency's two highest grades, or, if unrated, deter-
                   mined to be of comparable quality by the Adviser or a Sub-
                   Adviser;     
                  
               (4) corporate obligations with a remaining maturity of 397 days
                   or less whose issuers have outstanding short-term debt ob-
                   ligations rated in the highest rating category by at least
                   two NRSROs, or, if rated by only one NRSRO, in such
                   agency's highest grade, or, if unrated, determined to be of
                   comparable quality by the Adviser or a Sub-Adviser; and
                       
               (5)repurchase agreements with domestic commercial banks or reg-
               istered broker-dealers.
 
Mortgage-      
RelatedAnd  All Funds that may purchase debt securities for investment pur-
OtherAsset- poses (and in particular, the Balanced Fund) may invest in mort-
Backed      gage-related securities, and in other asset-backed securities (un-
Securities  related to mortgage loans) that are offered to investors currently
            or in the future. The value of some mortgage-related or asset-
            backed securities in which the Funds invest may be particularly
            sensitive to changes in prevailing interest rates, and, like other
            fixed income investments, the ability of a Fund to successfully
            utilize these instruments may depend in part upon the ability of
            the Sub-Adviser to forecast interest rates and other economic fac-
            tors correctly.     
 
            Mortgage Pass-Through Securities are securities representing in-
            terests in "pools" of mortgage loans secured by residential or
            commercial real property in which payments of both interest and
            principal on the securities are generally made monthly, in effect
            "passing through" monthly payments made by the individual borrow-
            ers on the mortgage loans which underlie the securities (net of
            fees paid to the issuer or guarantor of the securities). Early re-
            payment of principal on some mortgage-related securities (arising
            from prepayments of principal due to sale of the underlying prop-
            erty, refinancing, or foreclosure, net of fees and costs which may
            be incurred) may expose a Fund to a lower rate of return upon re-
            investment of principal. Also, if a security subject to prepayment
            has been purchased at a premium, the value of the premium would be
            lost in the event of prepayment. Like other fixed income securi-
            ties, when interest rates rise, the value of a mortgage-related
            security generally will decline; however, when interest rates are
            declining, the value of mortgage-related securities with prepay-
            ment features may not increase as much as other fixed income secu-
            rities. The rate of prepayments on underlying mortgages will af-
            fect the price and volatility of a mortgage-related security, and
            may have the effect of shortening or extending the effective matu-
            rity of the security beyond what was anticipated at the time of
            purchase. To the extent that unanticipated rates of prepayment on
            underlying mortgages increase the effective maturity of a mort-
            gage-related security, the volatility of such security can be ex-
            pected to increase.
               Payment of principal and interest on some mortgage pass-through
            securities (but not the market value of the securities themselves)
            may be guaranteed by the full faith and credit of the U.S. Govern-
            ment (in the case of securities guaranteed by the Government Na-
            tional Mortgage Association ("GNMA")); or guaranteed by agencies
            or instrumentalities of the U.S. Government (in the case of secu-
            rities guaranteed by the Federal National Mortgage Association
            ("FNMA") or the Federal Home Loan Mortgage Corporation ("FHLMC"),
            which are supported only by the discretionary authority of the
            U.S. Government to purchase the agency's obligations). Mortgage-
            related securities created by
 
30  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            non-governmental issuers (such as commercial banks, savings and
            loan institutions, private mortgage insurance companies, mortgage
            bankers and other secondary market issuers) may be supported by
            various forms of insurance or guarantees, including individual
            loan, title, pool and hazard insurance and letters of credit,
            which may be issued by governmental entities, private insurers or
            the mortgage poolers.
 
            Collateralized Mortgage Obligations ("CMOs") are hybrid mortgage-
            related instruments. Similar to a bond, interest and pre-paid
            principal on a CMO are paid, in most cases, on a monthly basis.
            CMOs may be collateralized by whole mortgage loans but are more
            typically collateralized by portfolios of mortgage pass-through
            securities guaranteed by GNMA, FHLMC, or FNMA. CMOs are structured
            into multiple classes, with each class bearing a different stated
            maturity. Monthly payments of principal, including prepayments,
            are first returned to investors holding the shortest maturity
            class; investors holding the longer maturity classes receive prin-
            cipal only after the first class has been retired. CMOs that are
            issued or guaranteed by the U.S. Government or by any of its agen-
            cies or instrumentalities will be considered U.S. Government secu-
            rities by a Fund, while other CMOs, even if collateralized by U.S.
            Government securities, will have the same status as other pri-
            vately issued securities for purposes of applying a Fund's diver-
            sification tests.
 
            Commercial Mortgage-Backed Securities include securities that re-
            flect an interest in, and are secured by, mortgage loans on com-
            mercial real property. The market for commercial mortgage-backed
            securities developed more recently and in terms of total outstand-
            ing principal amount of issues is relatively small compared to the
            market for residential single-family mortgage-backed securities.
            Many of the risks of investing in commercial mortgage-backed secu-
            rities reflect the risks of investing in the real estate securing
            the underlying mortgage loans. These risks reflect the effects of
            local and other economic conditions on real estate markets, the
            ability of tenants to make loan payments, and the ability of a
            property to attract and retain tenants. Commercial mortgage-backed
            securities may be less liquid and exhibit greater price volatility
            than other types of mortgage-related or asset-backed securities.
 
            Mortgage-Related Securities include securities other than those
            described above that directly or indirectly represent a participa-
            tion in, or are secured by and payable from, mortgage loans on
            real property, such as CMO residuals or stripped mortgage-backed
            securities ("SMBS"), and may be structured in classes with rights
            to receive varying proportions of principal and interest.
               A common type of SMBS will have one class receiving some of the
            interest and most of the principal from the mortgage assets, while
            the other class will receive most of the interest and the remain-
            der of the principal. In the most extreme case, one class will re-
            ceive all of the interest (the interest-only, or "IO" class),
            while the other class will receive all of the principal (the prin-
            cipal-only, or "PO" class). The yield to maturity on an IO class
            is extremely sensitive to the rate of principal payments (includ-
            ing prepayments) on the related underlying mortgage assets, and a
            rapid rate of principal payments may have a material adverse ef-
            fect on a Fund's yield to maturity from these securities. For a
            discussion of the characteristics of some of these instruments,
            see the Statement of Additional Information.
 
Convertible Many of the Funds may invest in convertible securities. Convert-
Securities  ible securities are generally preferred stocks or fixed income se-
            curities that are convertible into common stock at either a stated
            price or a stated rate. The price of the convertible security will
            normally vary in some proportion to changes in the price of the
            underlying common stock because of this conversion feature. A con-
            vertible security will normally also provide a fixed income
            stream. For this reason, the convertible security may not decline
            in price as rapidly as the underlying common stock.
               
               A Fund's Sub-Adviser will select convertible securities to be
            purchased by the Fund based primarily upon its evaluation of the
            fundamental investment characteristics and growth prospects of the
            issuer of the security. As a fixed income security, a convertible
            security tends to increase in market value when interest rates de-
            cline and to decrease in value when interest rates rise. While
            convertible securities generally offer lower interest or dividend
            yields than non-convertible fixed income securities of similar
            quality, their value tends to increase as the market value of the
            underlying stock increases and to decrease when the value of the
            underlying stock decreases.     
 

                                                               
                                                            Prospectus   31    

<PAGE>
 

               The Renaissance Fund may invest in so-called "synthetic con-
            vertible securities," which are composed of two or more different
            securities whose investment characteristics, taken together, re-
            semble those of convertible securities. For example, the Renais-
            sance Fund may purchase a non-convertible debt security and a war-
            rant or option. The synthetic convertible differs from the true
            convertible security in several respects. Unlike a true convert-
            ible security, which is a single security having a unitary market
            value, a synthetic convertible comprises two or more separate se-
            curities, each with its own market value. Therefore, the "market
            value" of a synthetic convertible is the sum of the values of its
            fixed income component and its convertible component. For this
            reason, the values of a synthetic convertible and a true convert-
            ible security may respond differently to market fluctuations.
 
Risks of       
High Yield  The Growth, Renaissance and Balanced Funds may invest a portion of
Securities  their assets in fixed income securities rated lower than Baa by
("Junk      Moody's or lower than BBB by S&P but rated at least B by Moody's
Bonds")     or S&P or, if not rated, determined by the Sub-Adviser to be of
            comparable quality. In addition, the Renaissance Fund may invest
            in convertible securities rated below B by Moody's or S&P (or, if
            unrated, considered by the Sub-Adviser to be of comparable quali-
            ty). Securities rated lower than Baa by Moody's or lower than BBB
            by S&P are sometimes referred to as "high yield" or "junk" bonds.
            Investors should consider the risks associated with high yield se-
            curities before investing in these Funds. Although each of the
            Growth and Renaissance Funds reserves the right to do so at any
            time, as of the date of this Prospectus, neither Fund invests nor
            has the present intention to invest more than 5% of its assets in
            high yield securities or junk bonds.     
               
               Investing in high yield securities involves special risks in
            addition to the risks associated with investments in higher rated
            fixed income securities. While offering a greater potential oppor-
            tunity for capital appreciation and higher yields than investments
            in higher rated debt securities, high yield securities typically
            entail greater potential price volatility and may be less liquid
            than investment grade debt. High yield securities may be regarded
            as predominately speculative with respect to the issuer's continu-
            ing ability to meet principal and interest payments. Analysis of
            the creditworthiness of issuers of high yield securities may be
            more complex than for issuers of higher quality debt securities,
            and achievement of a Fund's investment objective may, to the ex-
            tent of its investments in high yield securities, depend more
            heavily on the Sub-Adviser's creditworthiness analysis than would
            be the case if the Fund were investing in higher quality securi-
            ties. High yield securities may be more susceptible to real or
            perceived adverse economic and competitive industry conditions
            than higher grade securities.     
               For additional discussion of the characteristics of lower rated
            fixed income securities, see the Statement of Additional Informa-
            tion. Ratings assigned to fixed income securities are described in
            the Appendix to the Statement of Additional Information.
 
Derivative     
Instruments To the extent permitted by the investment objective and policies
            of each Fund, a Fund may purchase and write call and put options
            on securities, securities indexes and foreign currencies, and en-
            ter into futures contracts and use options on futures contracts as
            further described below. In pursuit of their investment objec-
            tives, the Growth, Target, Opportunity, Renaissance, Tax-Efficient
            Equity, International, Innovation, Precious Metals and Balanced
            Funds may engage in the purchase and writing of call and put op-
            tions on securities and securities indexes and enter into futures
            contracts and options thereon, including securities index futures
            contracts and options thereon. The Precious Metals Fund may pur-
            chase and write options on commodities indexes. The Funds that may
            invest in foreign-currency denominated securities may engage in
            the purchase and writing of call and put options on foreign cur-
            rencies. The Tax-Efficient Equity and Balanced Funds may also en-
            ter into swap agreements with respect to securities indexes. The
            Balanced Fund may also enter into swap agreements with respect to
            foreign currencies and interest rates. The Funds may (but are not
            required to) use these techniques to hedge against changes in in-
            terest rates, foreign currency exchange rates or securities pric-
            es; and for the International Fund, to increase exposure to a for-
            eign currency, to shift exposure to foreign currency fluctuations
            from one country to another, or as part of its overall investment
            strategy. Each Fund will segregate assets determined to be liquid
            by the Adviser or a Sub-Adviser in accordance with procedures es-
            tablished by the Board of Trustees (or, as permitted by applicable
            regulation, enter into certain offsetting positions) to cover its
            obligations under options, futures, and swaps to limit leveraging
            of the Fund.     
 
32  PIMCO Funds: Multi-Manager Series
<PAGE>
 
               
               Derivative instruments are considered for these purposes to
            consist of securities or other instruments whose value is derived
            from or related to the value of some other instrument or asset,
            and not to include those securities whose payment of principal
            and/or interest depend upon cash flows from underlying assets,
            such as mortgage-related or asset-backed securities. See "Mort-
            gage-Related and Other Asset-Backed Securities." The value of some
            derivative instruments in which the Funds may invest may be par-
            ticularly sensitive to changes in prevailing interest rates, and,
            like the other investments of the Funds, the ability of a Fund to
            successfully utilize these instruments may depend in part upon the
            ability of the Sub-Adviser to forecast interest rates and other
            economic factors correctly. If the Sub-Adviser incorrectly fore-
            casts such factors and has taken positions in derivative instru-
            ments contrary to prevailing market trends, the Funds could be ex-
            posed to the risk of loss.     
               
               The Funds might not employ any of the strategies described be-
            low, and no assurance can be given that any strategy used will
            succeed. If the Sub-Adviser incorrectly forecasts interest rates,
            market values or other economic factors in utilizing a derivatives
            strategy for a Fund, the Fund might have been in a better position
            if it had not entered into the transaction at all. Also, suitable
            derivative transactions may not be available in all circumstances.
            The use of these strategies involves certain special risks, in-
            cluding a possible imperfect correlation, or even no correlation,
            between price movements of derivative instruments and price move-
            ments of related investments. While some strategies involving de-
            rivative instruments can reduce the risk of loss, they can also
            reduce the opportunity for gain or even result in losses by off-
            setting favorable price movements in related investments or other-
            wise, due to the possible inability of a Fund to purchase or sell
            a portfolio security at a time that would be favorable or the pos-
            sible need to sell a portfolio security at a disadvantageous time
            because the Fund is required to maintain asset coverage or offset-
            ting positions in connection with transactions in derivative in-
            struments, and the possible inability of a Fund to close out or to
            liquidate its derivatives positions. In addition, a Fund's use of
            such instruments may cause the Fund to realize higher amounts of
            short-term capital gains (generally taxed to shareholders at ordi-
            nary income tax rates) than if it had not used such instruments.
                
            Options on Securities, Securities Indexes, and Currencies Certain
            Funds may purchase put options on securities. One purpose of pur-
            chasing put options is to protect holdings in an underlying or re-
            lated security against a substantial decline in market value.
            These Funds may also purchase call options on securities. One pur-
            pose of purchasing call options is to protect against substantial
            increases in prices of securities the Fund intends to purchase
            pending its ability to invest in such securities in an orderly
            manner. A Fund may sell put or call options it has previously pur-
            chased, which could result in a net gain or loss depending on
            whether the amount realized on the sale is more or less than the
            premium and other transaction costs paid on the put or call option
            which is sold. A Fund may write a call or put option only if the
            option is "covered" by the Fund holding a position in the under-
            lying securities or by other means which would permit immediate
            satisfaction of the Fund's obligation as writer of the option.
            Prior to exercise or expiration, an option may be closed out by an
            offsetting purchase or sale of an option of the same series.
               The purchase and writing of options involves certain risks.
            During the option period, the covered call writer has, in return
            for the premium on the option, given up the opportunity to profit
            from a price increase in the underlying security above the exer-
            cise price, but, as long as its obligation as a writer continues,
            has retained the risk of loss should the price of the underlying
            security decline. The writer of an option has no control over the
            time when it may be required to fulfill its obligation as a writer
            of the option. Once an option writer has received an exercise no-
            tice, it cannot effect a closing purchase transaction in order to
            terminate its obligation under the option and must deliver the un-
            derlying security at the exercise price. If a put or call option
            purchased by the Fund is not sold when it has remaining value, and
            if the market price of the underlying security remains equal to or
            greater than the exercise price (in the case of a put), or remains
            less than or equal to the exercise price (in the case of a call),
            the Fund will lose its entire investment in the option. Also,
            where a put or call option on a particular security is purchased
            to hedge against price movements in a related security, the price
            of the put or call option may move more or less than the price of
            the related security. There can be no assurance that a liquid mar-
            ket will exist when a Fund seeks to close out an option position.
            Furthermore, if trading restrictions or suspensions are imposed on
            the options markets, a Fund may be unable to close out a position.
 

                                                               
                                                            Prospectus   33    
<PAGE>
 

               
               For each of the Growth, Target, Opportunity, Renaissance, In-
            ternational, Innovation and Precious Metals Funds, in the case of
            a written call option on a securities index, the Fund will own
            corresponding securities whose historic volatility correlates with
            that of the index.     
               
               The International, Precious Metals and Balanced Funds may buy
            or sell put and call options on foreign currencies as a hedge
            against changes in the value of the U.S. dollar (or another cur-
            rency) in relation to a foreign currency in which a Fund's securi-
            ties may be denominated. Currency options traded on U.S. or other
            exchanges may be subject to position limits which may limit the
            ability of a Fund to reduce foreign currency risk using such op-
            tions.     
               Over-the-counter options in which certain Funds may invest dif-
            fer from traded options in that they are two-party contracts, with
            price and other terms negotiated between buyer and seller, and
            generally do not have as much market liquidity as exchange-traded
            options. The Funds may be required to treat as illiquid over-the-
            counter options purchased and securities being used to cover cer-
            tain written over-the-counter options.
               
            Swap Agreements The Tax-Efficient Equity Fund may enter into eq-
            uity index swap agreements for purposes of gaining exposure to the
            stocks making up an index of securities without actually purchas-
            ing those stocks. The Balanced Fund may enter into swap agreements
            to hedge against changes in interest rates, foreign currency ex-
            change rates or securities prices. Swap agreements are two-party
            contracts entered into primarily by institutional investors for
            periods ranging from a few weeks to more than one year. In a stan-
            dard swap transaction, two parties agree to exchange the returns
            (or differentials in rates of return) earned or realized on par-
            ticular predetermined investments or instruments, which may be ad-
            justed for an interest factor. The gross returns to be exchanged
            or "swapped" between the parties are generally calculated with re-
            spect to a "notional amount," i.e., the return on or increase in
            value of a particular dollar amount invested at a particular in-
            terest rate, or in a "basket" of securities representing a partic-
            ular index.     
               
               Most swap agreements entered into by the Funds calculate the
            obligations of the parties to the agreement on a "net basis." Con-
            sequently, a Fund's current obligations (or rights) under a swap
            agreement will generally be equal only to the net amount to be
            paid or received under the agreement based on the relative values
            of the positions held by each party to the agreement (the "net
            amount"). A Fund's current obligations under a swap agreement will
            be accrued daily (offset against amounts owed to the Fund), and
            any accrued but unpaid net amounts owed to a swap counterparty
            will be covered by the segregation of assets determined to be liq-
            uid by the Sub-Adviser in accordance with procedures established
            by the Board of Trustees to limit any potential leveraging of the
            Fund's portfolio. Obligations under swap agreements so covered
            will not be construed to be "senior securities" for purposes of a
            Fund's investment restriction concerning senior securities. A Fund
            will not enter into a swap agreement with any single party if the
            net amount owed or to be received under existing contracts with
            that party would exceed 5% of the Fund's assets.     
               
               Whether a Fund's use of swap agreements will be successful in
            furthering its investment objective will depend on the Sub-Advis-
            er's ability to predict correctly whether certain types of invest-
            ments are likely to produce greater returns than other invest-
            ments. Because they are two-party contracts and because they may
            have terms of greater than seven days, swap agreements may be con-
            sidered to be illiquid investments. Moreover, a Fund bears the
            risk of loss of the amount expected to be received under a swap
            agreement in the event of the default or bankruptcy of a swap
            agreement counterparty. The Funds will enter into swap agreements
            only with counterparties that meet certain standards for credit-
            worthiness (generally, such counterparties would have to be eligi-
            ble counterparties under the terms of the Funds' repurchase agree-
            ment guidelines). The swaps market is a relatively new market and
            is largely unregulated. It is possible that developments in the
            swaps market, including potential government regulation, could ad-
            versely affect a Fund's ability to terminate existing swap agree-
            ments or to realize amounts to be received under such agreements.
                   
            Futures Contracts and Options on Futures Contracts Certain Funds
            may enter into futures contracts and options thereon. The Precious
            Metals Fund may purchase and sell futures contracts on precious
            metals (such as gold), and purchase and write options on precious
            metals futures contracts. The Balanced Fund may invest in interest
            rate futures contracts and options thereon. The International,
            Precious Metals and Balanced Funds may invest in foreign exchange
            futures con     -
 
34  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            tracts and options thereon ("futures options") that are traded on
            a U.S. or foreign exchange or board of trade, or similar entity,
            or quoted on an automated quotation system. These Funds may engage
            in such futures transactions as an adjunct to their securities ac-
            tivities.
               There are several risks associated with the use of futures and
            futures options for hedging purposes. There can be no guarantee
            that there will be a correlation between price movements in the
            hedging vehicle and in the portfolio securities being hedged. An
            incorrect correlation could result in a loss on both the hedged
            securities in a Fund and the hedging vehicle, so that the portfo-
            lio return might have been greater had hedging not been attempted.
            There can be no assurance that a liquid market will exist at a
            time when a Fund seeks to close out a futures contract or a
            futures option position. Most futures exchanges and boards of
            trade limit the amount of fluctuation permitted in futures con-
            tract prices during a single day; once the daily limit has been
            reached on a particular contract, no trades may be made that day
            at a price beyond that limit. In addition, certain of these in-
            struments are relatively new and without a significant trading
            history. As a result, there is no assurance that an active second-
            ary market will develop or continue to exist. Lack of a liquid
            market for any reason may prevent a Fund from liquidating an unfa-
            vorable position, and the Fund would remain obligated to meet mar-
            gin requirements until the position is closed.
               
            Index Futures The Growth, Target, Opportunity, Renaissance, Tax-
            Efficient Equity, International, Innovation, Precious Metals and
            Balanced Funds may purchase and sell futures contracts on various
            securities indexes ("Index Futures") and related options for hedg-
            ing purposes and for investment purposes. A Fund's purchase and
            sale of Index Futures is limited to contracts and exchanges which
            have been approved by the Commodity Futures Trading Commission
            ("CFTC").     
               
               The International Fund may invest to a significant degree in
            Index Futures on stock indexes and related options (including
            those which may trade outside of the United States) as an alterna-
            tive to purchasing individual stocks in order to adjust the Fund's
            exposure to a particular market. The Fund may invest in Index
            Futures and related options when the Sub-Adviser believes that
            there are not enough attractive securities available to maintain
            the standards of diversification and liquidity set for the Fund
            pending investment in such securities if or when they do become
            available. Through the use of Index Futures and related options,
            the International Fund may diversify risk in its portfolio without
            incurring the substantial brokerage costs which may be associated
            with investment in the securities of multiple issuers. The Fund
            may also avoid potential market and liquidity problems which may
            result from increases in positions already held by it.     
               A Fund may close open positions on the futures exchanges on
            which Index Futures are traded at any time up to and including the
            expiration day. All positions which remain open at the close of
            the last business day of the contract's life are required to set-
            tle on the next business day (based upon the value of the relevant
            index on the expiration day), with settlement made with the appro-
            priate clearing house. Because the specific procedures for trading
            foreign stock Index Futures on futures exchanges are still under
            development, additional or different margin requirements as well
            as settlement procedures may be applicable to foreign stock Index
            Futures at the time a Fund purchases such instruments.
               Positions in Index Futures may be closed out by a Fund only on
            the futures exchange upon which the Index Futures are then traded.
            There can be no assurance that a liquid market will exist for any
            particular contract at any particular time. Also, the price of In-
            dex Futures may not correlate perfectly with movement in the rele-
            vant index due to certain market distortions. First, all partici-
            pants in the futures market are subject to margin deposit and
            maintenance requirements. Rather than meeting additional margin
            deposit requirements, investors may close futures contracts
            through offsetting transactions which could distort the normal re-
            lationship between the index and futures markets. Second, the de-
            posit requirements in the futures market are less onerous than
            margin requirements in the securities market, and as a result, the
            futures market may attract more speculators than does the securi-
            ties market. Increased participation by speculators in the futures
            market may also cause temporary price distortions. In addition,
            trading hours for foreign stock Index Futures may not correspond
            perfectly to hours of trading on the foreign exchange to which a
            particular foreign stock Index Future relates. This may result in
            a disparity between the price of Index
 

                                                                
                                                             Prospectus  35    

<PAGE>
 

            Futures and the value of the relevant index due to the lack of
            continuous arbitrage between the Index Futures price and the value
            of the underlying index.
               The Funds may only enter into futures contracts or futures op-
            tions which are standardized and traded on a U.S. or foreign ex-
            change or board of trade, or similar entity, or quoted on an auto-
            mated quotation system. Each Fund may use futures contracts and
            related options for "bona fide hedging" purposes, as such term is
            defined in applicable regulations of the CFTC, or, with respect to
            positions in futures and related options that do not qualify as
            "bona fide hedging" positions, may enter such positions only to
            the extent that aggregate initial margin deposits plus premiums
            paid by it for open futures option positions, less the amount by
            which any such positions are "in-the-money," would not exceed 5%
            of the Fund's net assets.
 
Precious    The Precious Metals Fund will concentrate its investments in the
Metals      precious metals industry. Prices of precious metals can be ex-
            pected to respond to changes in rates of inflation and to percep-
            tions of economic and political instability. The values of compa-
            nies engaged in precious metal-related activities whose securities
            are principally traded on foreign securities exchanges may also be
            affected by changes in the exchange rate between the relevant for-
            eign currency and the U.S. dollar. Based on historical experience,
            the prices of precious metals and of securities of companies en-
            gaged in precious metal-related activities may be subject to ex-
            treme fluctuations, reflecting wider economic or political insta-
            bility or for other reasons.
 
Loans of    For the purpose of achieving income, each Fund may lend its port-
Portfolio   folio securities to brokers, dealers, and other financial institu-
Securities  tions, provided:
               (i)  the loan is secured continuously by collateral consisting
                    of U.S. Government securities, cash or cash equivalents
                    (negotiable certificates of deposit, bankers' acceptances
                    or letters of credit) maintained on a daily mark-to-market
                    basis in an amount at least equal to the current market
                    value of the securities loaned;
               (ii) the Fund may at any time call the loan and obtain the re-
                    turn of the securities loaned;
               (iii) the Fund will receive any interest or dividends paid on
                     the loaned securities; and
               (iv) the aggregate market value of securities loaned will not
                    at any time exceed the Fund's limitation on lending its
                    portfolio securities.
              Each Fund's performance will continue to reflect changes in the
            value of the securities loaned and will also reflect the receipt
            of either interest, through investment of cash collateral by the
            Fund in permissible investments, or a fee, if the collateral is
            U.S. Government securities. Securities lending involves the risk
            of loss of rights in the collateral or delay in recovery of the
            collateral should the borrower fail to return the security loaned
            or become insolvent. The Funds may pay lending fees to the party
            arranging the loan.
 
Short Sales Each Fund may from time to time make short sales involving securi-
            ties held in the Fund's portfolio or which the Fund has the right
            to acquire without the payment of further consideration. For these
            purposes, a Fund may also hold or have the right to acquire secu-
            rities which, without the payment of any further consideration,
            are convertible into or exchangeable for the securities sold
            short. Short sales expose the Fund to the risk that it will be re-
            quired to acquire, convert or exchange securities to cover its
            short position at a time when the securities sold short have ap-
            preciated in value, thus resulting in a loss to the Fund.
 
When-       Each Fund may purchase securities which it is eligible to purchase
Issued,     on a when-issued basis, may purchase and sell such securities for
Delayed     delayed delivery and may make contracts to purchase such securi-
Delivery    ties for a fixed price at a future date beyond normal settlement
And         time (forward commitments). When-issued transactions, delayed de-
Forward     livery purchases and forward commitments involve a risk of loss if
Commitment  the value of the securities declines prior to the settlement date,
Transactionswhich risk is in addition to the risk of decline in the value of
            the Fund's other assets. Typically, no income accrues on securi-
            ties a Fund has committed to purchase prior to the time delivery
            of the securities is made, although a Fund may earn income on se-
            curities it has segregated.
 
36  PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
Repurchase  For the purposes of maintaining liquidity and achieving income,
Agreements  each Fund may enter into repurchase agreements, which entail the
            purchase of a portfolio-eligible security from a bank or broker-
            dealer that agrees to repurchase the security at the Fund's cost
            plus interest within a specified time (normally one day). If the
            party agreeing to repurchase should default, as a result of bank-
            ruptcy or otherwise, the Fund will seek to sell the securities
            which it holds, which action could involve procedural costs or de-
            lays in addition to a loss on the securities if their value should
            fall below their repurchase price. Those Funds whose investment
            objectives do not include the earning of income will invest in re-
            purchase agreements only as a cash management technique with re-
            spect to that portion of the portfolio maintained in cash. Each
            Fund will limit its investment in repurchase agreements maturing
            in more than seven days consistent with the Fund's policy on in-
            vestment in illiquid securities.
 
Reverse        
Repurchase  A reverse repurchase agreement may for some purposes be considered
Agreements  borrowing that involves the sale of a security by a Fund and its
And Other   agreement to repurchase the instrument at a specified time and
Borrowings  price. The Fund will segregate assets determined to be liquid by
            the Adviser or Sub-Adviser in accordance with procedures estab-
            lished by the Board of Trustees to cover its obligations under re-
            verse repurchase agreements. Reverse repurchase agreements will be
            subject to the Funds' limitations on borrowings. A Fund also may
            borrow money for investment purposes subject to any policies of
            the Fund currently described in this Prospectus or in the State-
            ment of Additional Information. Such a practice will result in
            leveraging of a Fund's assets. Leverage will tend to exaggerate
            the effect on net asset value of any increase or decrease in the
            value of a Fund's portfolio and may cause a Fund to liquidate
            portfolio positions when it would not be advantageous to do so.
                
Portfolio      
Turnover    The length of time a Fund has held a particular security is not
            generally a consideration in investment decisions. The investment
            policies of a Fund may lead to frequent changes in the Fund's in-
            vestments, particularly in periods of volatile market movements. A
            change in the securities held by a Fund is known as "portfolio
            turnover." High portfolio turnover (e.g., over 100%) involves cor-
            respondingly greater expenses to a Fund, including brokerage com-
            missions or dealer mark-ups and other transaction costs on the
            sale of securities and reinvestments in other securities. See
            "Management of the Trust--Portfolio Transactions." Such sales may
            result in realization of taxable capital gains (including short-
            term capital gains which are generally taxed to shareholders at
            ordinary income tax rates). See "Taxes." Portfolio turnover rates
            for fiscal 1998 and 1997 for the Growth, Target, Opportunity, Re-
            naissance, International, Innovation and Precious Metals Funds and
            for fiscal 1998 for the remaining Funds (other than the Tax-Effi-
            cient Equity and Value 25 Funds) are set forth under "Financial
            Highlights." Portfolio turnover rates for the remaining Funds for
            fiscal 1997 were as follows: Balanced--199%; Equity Income--45%;
            Value--71%; Capital Appreciation--87%; Mid-Cap Growth--82%; and
            Small-Cap Value--48%.  The annual portfolio turnover rate for the
            Tax-Efficient Equity Fund is expected to be less than 40%. The an-
            nual portfolio turnover rate for the Value 25 Fund is expected to
            be less than 150%. In connection with the change in Sub-Advisers
            of the Growth, Target, Opportunity, Renaissance and Innovation
            Funds from Columbus Circle to PIMCO Equity Advisors, these Funds
            may experience increased turnover due to the differences, if any,
            between the portfolio management strategies of Columbus Circle and
            PIMCO Equity Advisors. See "Management of the Trust--Sub-Advis-
            ers."     
 
Illiquid       
Securities  Each Fund may invest in securities that are illiquid so long as no
            more than 15% of the value of the Fund's net assets (taken at mar-
            ket value at the time of investment) would be invested in such se-
            curities. Certain illiquid securities may require pricing at fair
            value as determined in good faith under the supervision of the
            Board of Trustees. A Sub-Adviser may be subject to significant de-
            lays in disposing of illiquid securities, and transactions in il-
            liquid securities may entail registration expenses and other
            transaction costs that are higher than those for transactions in
            liquid securities.     
               The term "illiquid securities" for this purpose means securi-
            ties that cannot be disposed of within seven days in the ordinary
            course of business at approximately the amount at which a Fund has
            valued the securities. Illiquid securities are considered to in-
            clude, among other things, written over-the-counter options, secu-
            rities or other liquid assets being used as cover for such op-
            tions, repurchase agreements with maturities in excess of seven
            days, certain loan
 

                                                                
                                                             Prospectus  37    

<PAGE>
 
PIMCO Funds: Multi-Manager Series
               
            participation interests, fixed time deposits which are not subject
            to prepayment or provide for withdrawal penalties upon prepayment
            (other than overnight deposits), securities that are subject to
            legal or contractual restrictions on resale (such as privately
            placed debt securities), and other securities which legally or in
            the Adviser's or a Sub-Adviser's opinion may be deemed illiquid
            (not including securities issued pursuant to Rule 144A under the
            Securities Act of 1933 and certain commercial paper that the Ad-
            viser or a Sub-Adviser has determined to be liquid under proce-
            dures approved by the Board of Trustees).     
 
Investment
in
InvestmentCompanies
               
            The International Fund may invest up to 10% of its assets in secu-
            rities of other investment companies, such as closed-end manage-
            ment investment companies, or in pooled accounts or other invest-
            ment vehicles which invest in foreign markets. Each of the other
            Funds may invest up to 5% of its assets in other investment compa-
            nies. As a shareholder of an investment company, these Funds may
            indirectly bear service and other fees which are in addition to
            the fees the Funds pay their service providers.     
 
Credit and  All fixed income securities are subject to market risk and credit
Market Risk risk. Market risk relates to market-induced changes in a
of          security's value, usually as a result of changes in interest
FixedIncome rates. The value of a Fund's investments in fixed income securi-
Securities  ties will change as the general level of interest rates fluctuate.
            During periods of falling interest rates, the value of a Fund's
            fixed income securities generally rise. Conversely, during periods
            of rising interest rates, the value of a Fund's fixed income secu-
            rities generally decline. Credit risk relates to the ability of
            the issuer to make payments of principal and interest.
 
Service     Many of the services provided to the Funds depend on the smooth
Systems --  functioning of computer systems. Many systems in use today cannot
Year 2000   distinguish between the year 1900 and the year 2000. Should any of
Problem     the service systems fail to process information properly, that
            could have an adverse impact on the Funds' operations and services
            provided to shareholders. The Adviser, Distributor, Shareholder
            Servicing and Transfer Agent, Custodian, and certain other service
            providers to the Funds have reported that each is working toward
            mitigating the risks associated with the so-called "year 2000
            problem." However, there can be no assurance that the problem will
            be corrected in all respects and that the Funds' operations and
            services provided to shareholders will not be adversely affected,
            nor can there be any assurance that the year 2000 problem will not
            have an adverse effect on the entities whose securities are held
            by the Funds or on domestic or global equity markets or economies,
            generally.
 
"Fundamental"
Policies
               
            The investment objective of each of the Growth, Target, Opportuni-
            ty, Value 25, Renaissance, Tax-Efficient Equity, International,
            Innovation and Precious Metals Funds described in this Prospectus
            may be changed by the Board of Trustees without shareholder ap-
            proval. The investment objective of each other Fund is fundamental
            and may not be changed without shareholder approval by vote of a
            majority of the outstanding shares of that Fund. If there is a
            change in a Fund's investment objective, including a change ap-
            proved by shareholder vote, shareholders should consider whether
            the Fund remains an appropriate investment in light of their then
            current financial position and needs.     
 
            Performance Information
 
            From time to time the Trust may make available certain information
            about the performance of the Class A, Class B and Class C shares
            of some or all of the Funds. Information about a Fund's perfor-
            mance is based on that Fund's (or its predecessor's) record to a
            recent date and is not intended to indicate future performance.
            Performance information is computed separately for each Fund's
            Class A, Class B and Class C shares in accordance with the formu-
            las described below. Because Class B and Class C shares bear the
            expense of the distribution fee attending the deferred sales
            charge (Class B) and asset based sales charge (Class C) alterna-
            tives and certain other expenses, it is expected that, under nor-
            mal circumstances, the level of performance of a Fund's Class B
            and Class C shares will be lower than that of the
 
                                      38
<PAGE>
 
            Fund's Class A shares, although an investment in Class B or Class
            C shares is not reduced by the front-end sales charge generally
            applicable to an investment in Class A shares.
               The total return of Class A, Class B and/or Class C shares of
            all Funds may be included in advertisements or other written mate-
            rial. When a Fund's total return is advertised with respect to its
            Class A, Class B and/or Class C shares, it will be calculated for
            the past year, the past five years, and the past ten years (or if
            the Fund has been offered for a period shorter than one, five or
            ten years, that period will be substituted) since the establish-
            ment of the Fund or its predecessor series of PIMCO Advisors
            Funds, as more fully described in the Statement of Additional In-
            formation. For periods prior to the initial offering date of a
            particular class of shares, total return presentations for the
            class will be based on the historical performance of an older
            class of the Fund (if any) restated, as necessary, to reflect the
            current sales charges (if any) associated with the newer class.
            The older class to be used in each case is set forth in the State-
            ment of Additional Information. For these purposes, the perfor-
            mance of the older class will also be restated to reflect any dif-
            ferent operating expenses (such as different administrative fees
            and/or 12b-1/servicing fee charges) associated with the newer
            class. In certain cases, such a restatement will result in perfor-
            mance of the newer class which is higher than if the performance
            of the older class were not restated to reflect the different op-
            erating expenses of the newer class. In such cases, the Trust's
            advertisements will also, to the extent appropriate, show the
            lower performance figure reflecting the actual operating expenses
            incurred by the older class for periods prior to the initial of-
            fering date of the newer class. Total return for each class is
            measured by comparing the value of an investment in the Fund at
            the beginning of the relevant period (in the case of Class A
            shares, giving effect to the maximum initial sales charge) to the
            redemption value of the investment in the Fund at the end of the
            period (assuming immediate reinvestment of any dividends or capi-
            tal gains distributions at net asset value and giving effect to
            the deduction of the maximum CDSC which would be payable). Total
            return may be advertised using alternative methods that reflect
            all elements of return, but that may be adjusted to reflect the
            cumulative impact of alternative fee and expense structures, such
            as the currently effective advisory and administrative fees for
            the Funds.
               Quotations of yield for a Fund or class will be based on the
            investment income per share (as defined by the Securities and Ex-
            change Commission) during a particular 30-day (or one-month) pe-
            riod (including dividends and interest), less expenses accrued
            during the period ("net investment income"), and will be computed
            by dividing net investment income by the maximum public offering
            price per share on the last day of the period.
               The Funds may also provide current distribution information to
            their shareholders in shareholder reports or other shareholder
            communications, or in certain types of sales literature provided
            to prospective investors. Current distribution information for a
            particular class of a Fund will be based on distributions for a
            specified period (i.e., total dividends from net investment in-
            come), divided by the relevant class net asset value per share on
            the last day of the period and annualized. The rate of current
            distributions does not reflect deductions for unrealized losses
            from transactions in derivative instruments such as options and
            futures, which may reduce total return. Current distribution rates
            differ from standardized yield rates in that they represent what a
            class of a Fund has declared and paid to shareholders as of the
            end of a specified period rather than the Fund's actual net in-
            vestment income for that period.
               
               The Adviser and each Sub-Adviser may also report to sharehold-
            ers or to the public in advertisements concerning its performance
            as adviser to clients other than the Funds, and on its comparative
            performance or standing in relation to other money managers. Such
            comparative information may be compiled or provided by independent
            ratings services or by news organizations. Any performance infor-
            mation, whether related to the Funds, the Adviser or the Sub-Ad-
            visers, should be considered in light of the Funds' investment ob-
            jectives and policies, characteristics and quality of the Funds'
            portfolios, and the market conditions during the time period indi-
            cated, and should not be considered to be representative of what
            may be achieved in the future.     
               Investment results of the Funds will fluctuate over time, and
            any representation of the Funds' total return or yield for any
            prior period should not be considered as a representation of what
            an investor's total return or yield may be in any future period.
 

                                                                
                                                             Prospectus  39    
<PAGE>
 

 
            How to Buy Shares
               
            Class A, Class B and Class C shares of each Fund of the Trust are
            continuously offered through the Trust's principal underwriter,
            PIMCO Funds Distributors LLC (the "Distributor"), and through
            other firms which have dealer agreements with the Distributor
            ("participating brokers") or which have agreed to act as introduc-
            ing brokers for the Distributor ("introducing brokers").     
               There are two ways to purchase Class A, Class B or Class C
            shares: either 1) through your dealer or broker which has a dealer
            agreement with the Distributor; or 2) directly by mailing a PIMCO
            Funds account application (an "account application") with payment,
            as described below under the heading Direct Investment, to the
            Distributor (if no dealer is named in the account application, the
            Distributor may act as dealer).
               Each Fund currently offers and sells three classes of shares in
            this Prospectus (Class A, Class B and Class C). Shares may be pur-
            chased at a price equal to their net asset value per share next
            determined after receipt of an order, plus a sales charge which,
            at the election of the purchaser, may be imposed either (i) at the
            time of the purchase in the case of Class A shares (the "initial
            sales charge alternative"), (ii) on a contingent deferred basis in
            the case of Class B shares (the "deferred sales charge alterna-
            tive"), or (iii) by the deduction of an ongoing asset based sales
            charge in the case of Class C shares (the "asset based sales
            charge alternative"). In certain circumstances, Class A and Class
            C shares are also subject to a CDSC. See "Alternative Purchase Ar-
            rangements." Purchase payments for Class B and Class C shares are
            fully invested at the net asset value next determined after ac-
            ceptance of the trade. Purchase payments for Class A shares, less
            the applicable sales charge, are invested at the net asset value
            next determined after acceptance of the trade.
               All purchase orders received by the Distributor prior to the
            close of regular trading (normally 4:00 p.m., Eastern time) on the
            New York Stock Exchange (the "Exchange"), on a regular business
            day, are processed at that day's offering price. However, orders
            received by the Distributor from dealers or brokers after the of-
            fering price is determined that day will receive such offering
            price if the orders were received by the dealer or broker from its
            customer prior to such determination and were transmitted to and
            received by the Distributor prior to its close of business that
            day (normally 5:00 p.m., Eastern time) or, in the case of certain
            retirement plans, received by the Distributor prior to 9:30 a.m.,
            Eastern time on the next business day. Purchase orders received on
            other than a regular business day will be executed on the next
            succeeding regular business day. The Distributor, in its sole dis-
            cretion, may accept or reject any order for purchase of Fund
            shares. The sale of shares will be suspended during any period in
            which the Exchange is closed for other than weekends or holidays,
            or if permitted by the rules of the Securities and Exchange Com-
            mission, when trading on the Exchange is restricted or during an
            emergency which makes it impracticable for the Funds to dispose of
            their securities or to determine fairly the value of their net as-
            sets, or during any other period as permitted by the Securities
            and Exchange Commission for the protection of investors.
               Except for purchases through the PIMCO Funds Auto-Invest plan,
            the PIMCO Funds Auto-Exchange plan, investments pursuant to the
            Uniform Gifts to Minors Act, and tax-qualified and wrap programs
            referred to below under "Tax-Qualified Retirement Plans" and
            "Sales at Net Asset Value," the minimum initial investment in
            Class A, Class B or Class C shares of any Fund of the Trust or any
            series of PIMCO Funds: Pacific Investment Management Series is
            $2,500, and the minimum additional investment is $100 per Fund.
            For information about dealer commissions, see "Alternative Pur-
            chase Arrangements" below. Persons selling Fund shares may receive
            different compensation for selling Class A, Class B or Class C
            shares. Normally, Fund shares purchased through participating bro-
            kers are held in the investor's account with that broker. No share
            certificates will be issued unless specifically requested in writ-
            ing by an investor or broker-dealer.
 
40  PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
Direct      Investors who wish to invest in Class A, Class B or Class C shares
Investment  of the Trust directly, rather than through a participating broker,
            may do so by opening an account with the Distributor. To open an
            account, an investor should complete the account application. All
            shareholders who open direct accounts with the Distributor will
            receive from the Distributor individual confirmations of each pur-
            chase, redemption, dividend reinvestment, exchange or transfer of
            Trust shares, including the total number of Trust shares owned as
            of the confirmation date, except that purchases which result from
            the reinvestment of daily-accrued dividends and/or distributions
            will be confirmed once each calendar quarter. See "Distributions"
            below. Information regarding direct investment or any other fea-
            tures or plans offered by the Trust may be obtained by calling the
            Distributor at 1-800-426-0107 or by calling your broker.
 
Purchase by Investors who wish to invest directly may send a check payable to
Mail        PIMCO Funds Distributors LLC, along with a completed application
            form to:
 
                PIMCO Funds Distributors LLC
                P.O. Box 9688
                Providence, RI 02940-0926
 
               Purchases are accepted subject to collection of checks at full
            value and conversion into federal funds. Payment by a check drawn
            on any member of the Federal Reserve System can normally be con-
            verted into federal funds within two business days after receipt
            of the check. Checks drawn on a non-member bank may take up to 15
            days to convert into federal funds. In all cases, the purchase
            price is based on the net asset value next determined after the
            purchase order and check are accepted, even though the check may
            not yet have been converted into federal funds.
 
Subsequent  Subsequent purchases of Class A, Class B or Class C shares can be
Purchases   made as indicated above by mailing a check with a letter describ-
of Shares   ing the investment or with the additional investment portion of a
            confirmation statement. Except for subsequent purchases through
            the PIMCO Funds Auto-Invest plan, the PIMCO Funds Auto-Exchange
            plan, tax-qualified programs and PIMCO Funds Fund Link referred to
            below, and except during periods when an Automatic Withdrawal Plan
            is in effect, the minimum subsequent purchase is $100 in any Fund.
            All payments should be made payable to PIMCO Funds Distributors
            LLC and should clearly indicate the shareholder's account number.
            Checks should be mailed to the address above under "Purchase by
            Mail."
 
Tax-        The Distributor makes available retirement plan services and docu-
Qualified   ments for Individual Retirement Accounts (IRAs), including Roth
Retirement  IRAs, for which Boston Safe Deposit & Trust Company serves as
Plans       trustee and for IRA Accounts established with Form 5305-SIMPLE un-
            der the Internal Revenue Code of 1986, as amended (the "Code").
            These accounts include Simplified Employee Pension Plan (SEP) and
            Salary Reduction Simplified Employee Pension Plan (SAR/SEP) IRA
            accounts and prototype documents. In addition, prototype documents
            are available for establishing 403(b)(7) custodial accounts with
            Boston Safe Deposit & Trust Company as custodian. This type of
            plan is available to employees of certain non-profit organiza-
            tions.
               The Distributor also makes available prototype documents for
            establishing Money Purchase and/or Profit Sharing Plans and 401(k)
            Retirement Savings Plans. These prototype plans require certain
            minimum per participant account sizes and certain minimum aggre-
            gate investments in the Trust, but are not subject to the small
            account fees described below that will apply to other plans. In-
            vestors should call the Distributor at 1-800-426-0107 for further
            information about these plans and should consult with their own
            tax advisers before establishing any retirement plan. Investors
            who maintain their accounts with participating brokers should con-
            sult their broker about similar types of accounts that may be of-
            fered through the broker. The minimum initial investment for all
            tax-qualified plans (except for employer-sponsored plans, SIMPLE
            IRAs, SEPs and SAR/SEPs) is $1,000 per Fund and the minimum subse-
            quent investment is $100. The minimum initial investment for em-
            ployer-sponsored plans, SIMPLE IRAs, SEPs and SAR/SEPs and the
            minimum subsequent investment per Fund for all such plans is $50.
 

                                                                
                                                             Prospectus  41    

<PAGE>
 

 
PIMCO Funds The PIMCO Funds Auto-Invest plan provides for periodic investments
Auto-Invest into the shareholder's account with the Trust by means of auto-
            matic transfers of a designated amount from the shareholder's bank
            account. The minimum investment for eligibility in the PIMCO Funds
            Auto-Invest plan is $1,000 per Fund. Investments may be made
            monthly or quarterly, and may be in any amount subject to a mini-
            mum of $50 per month for each Fund in which shares are purchased
            through the plan. Further information regarding the PIMCO Funds
            Auto-Invest plan is available from the Distributor or participat-
            ing brokers. You may enroll by completing the appropriate section
            on the account application, or you may obtain an Auto-Invest ap-
            plication by calling the Distributor or your broker.
 
PIMCO Funds    
Auto-       The PIMCO Funds Auto-Exchange plan establishes regular, periodic
Exchange    exchanges from one Fund to another Fund or to another series of
            the Trust or PIMCO Funds: Pacific Investment Management Series
            which offers Class A, Class B or Class C shares. The plan provides
            for regular investments into a shareholder's account in a specific
            Fund by means of automatic exchanges of a designated amount from
            another Fund account of the same class of shares and with identi-
            cal account registration.     
               Exchanges may be made monthly or quarterly, and may be in any
            amount subject to a minimum of $1,000 to open a new Fund account
            and of $50 for any existing Fund account for which shares are pur-
            chased through the plan. Further information regarding the PIMCO
            Funds Auto-Exchange plan is available from the Distributor at 1-
            800-426-0107 or participating brokers. You may enroll by complet-
            ing an application which may be obtained from the Distributor or
            by telephone request at 1-800-426-0107. For more information on
            exchanges, see "Exchange Privilege."
 
PIMCO Funds PIMCO Funds Fund Link ("Fund Link") connects your Fund account
Fund Link   with a bank account. Fund Link may be used for subsequent pur-
            chases and for redemptions and other transactions described under
            "How to Redeem." Purchase transactions are effected by electronic
            funds transfers from the shareholder's account at a U.S. bank or
            other financial institution that is an Automated Clearing House
            ("ACH") member. Investors may use Fund Link to make subsequent
            purchases of shares in amounts from $50 to $10,000. To initiate
            such purchases, call 1-800-426-0107. All such calls will be re-
            corded. Fund Link is normally established within 45 days of re-
            ceipt of a Fund Link application by First Data Investor Services
            Group, Inc. (the "Transfer Agent"). The minimum investment by Fund
            Link is $50 per Fund. Shares will be purchased on the regular
            business day the Distributor receives the funds through the ACH
            system, provided the funds are received before the close of regu-
            lar trading on the Exchange. If the funds are received after the
            close of regular trading, the shares will be purchased on the next
            regular business day.
               Fund Link privileges must be requested on the account applica-
            tion. To establish Fund Link on an existing account, complete a
            Fund Link application, which is available from the Distributor or
            your broker, with signatures guaranteed from all shareholders of
            record for the account. See "Signature Guarantee" below. Such
            privileges apply to each shareholder of record for the account un-
            less and until the Distributor receives written instructions from
            a shareholder of record canceling such privileges. Changes of bank
            account information must be made by completing a new Fund Link ap-
            plication signed by all owners of record of the account, with all
            signatures guaranteed. The Distributor, the Transfer Agent and the
            Fund may rely on any telephone instructions believed to be genuine
            and will not be responsible to shareholders for any damage, loss
            or expenses arising out of such instructions. The Fund reserves
            the right to amend, suspend or discontinue Fund Link privileges at
            any time without prior notice. Fund Link does not apply to shares
            held in broker "street name" accounts.
       
       
Signature   When a signature guarantee is called for, the shareholder should
Guarantee   have "Signature Guaranteed" stamped under his signature and guar-
            anteed by any of the following entities: U.S. banks, foreign banks
            having a U.S. correspondent bank, credit unions, savings associa-
            tions, U.S. registered dealers and brokers, municipal securities
            dealers and brokers, government securities dealers and brokers,
            national securities exchanges, registered securities associations
            and clearing agencies (each an "Eligible Guarantor Institution").
            The Distributor reserves the right to reject any signature
 
42  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            guarantee pursuant to its written signature guarantee standards or
            procedures, which may be revised in the future to permit it to re-
            ject signature guarantees from Eligible Guarantor Institutions
            that do not, based on credit guidelines, satisfy such written
            standards or procedures. The Trust may change the signature guar-
            antee requirements from time to time upon notice to shareholders,
            which may be given by means of a new or supplemented Prospectus.
 
Account     Changes in registration or account privileges may be made in writ-
Registra-   ing to the Transfer Agent. Signature guarantees may be required.
tion        See "Signature Guarantee" above. All correspondence must include
Changes     the account number and must be sent to:
 
               PIMCO Funds Distributors LLC
               P.O. Box 9688
               Providence, RI 02940-0926
 
Small       Because of the disproportionately high costs of servicing accounts
Account Fee with low balances, a fee at an annual rate of $16, paid to PIMCO
            Advisors, the Funds' administrator, will automatically be deducted
            from direct accounts with balances falling below a minimum level.
            The valuation of accounts and the deduction are expected to take
            place during the last five business days of each calendar quarter.
            The fee will be deducted in quarterly installments from accounts
            with balances below $2,500 except for Uniform Gift to Minors, IRA,
            Roth IRA and Auto-Invest accounts, for which the limit is $1,000.
            Effective April 1, 1999, except for prototype plans described
            above, the fee will apply to employer-sponsored retirement plan
            accounts, Money Purchase and/or Profit Sharing plans, 401(k)
            plans, 403(b)(7) custodial accounts, SIMPLE IRAs, SEPs and
            SAR/SEPs. (A separate custodial fee may apply to IRAs, Roth IRAs
            and other retirement accounts.) No fee will be charged on any ac-
            count of a shareholder if the aggregate value of all of the share-
            holder's accounts is at least $50,000. No small account fee will
            be charged to employee and employee-related accounts of PIMCO Ad-
            visors and/or its affiliates.
 
Minimum     Due to the relatively high cost to the Funds of maintaining small
Account     accounts, you are asked to maintain an account balance of at least
Size        the amount necessary to open the type of account involved. If your
            balance is below such minimum for three months or longer, the
            Funds' administrator shall have the right (except in the case of
            employer-sponsored retirement accounts) to close your account af-
            ter giving you 60 days in which to increase your balance. Your ac-
            count will not be liquidated if the reduction in size is due
            solely to market decline in the value of your Fund shares or if
            the aggregate value of all your accounts in PIMCO Funds exceeds
            $50,000.
 
            Alternative Purchase Arrangements
 
            The Trust offers investors three classes of shares in this Pro-
            spectus (Class A, Class B and Class C) which bear sales charges in
            different forms and amounts and which bear different levels of ex-
            penses. Through separate prospectuses, certain of the Funds cur-
            rently offer up to three additional classes of shares, Class D,
            Institutional Class and Administrative Class shares. Class D
            shares are offered through financial intermediaries. Institutional
            Class and Administrative Class shares are offered to pension and
            profit sharing plans, employee benefit trusts, endowments, founda-
            tions, corporations and other high net worth individuals. Class D,
            Institutional Class and Administrative Class shares are sold with-
            out a sales charge and have different expenses than Class A, Class
            B and Class C shares. As a result of lower sales charges and/or
            operating expenses, Class D, Institutional Class and Administra-
            tive Class shares are generally expected to achieve higher invest-
            ment returns than Class A, Class B or Class C shares. To obtain
            more information about the other classes of shares, please call
            the Distributor at 1-800-927-4648 (for Institutional and Adminis-
            trative Classes) or 1-888-87-PIMCO (for Class D).
 
                                                                  
                                                              Prospectus  43    

<PAGE>
 

               The alternative purchase arrangements offered in this Prospec-
            tus are designed to enable a retail investor to choose the method
            of purchasing Fund shares that is most beneficial to the investor
            based on all factors to be considered, which include: the amount
            and intended length of the investment; the particular Fund; and
            whether the investor intends to exchange shares for shares of
            other Funds. Generally, when making an investment decision, in-
            vestors should consider the anticipated life of an intended in-
            vestment in the Funds, the accumulated distribution and servicing
            fees plus CDSCs on Class B or Class C shares, the initial sales
            charge plus accumulated servicing fees on Class A shares (plus a
            CDSC in certain circumstances), the possibility that the antici-
            pated higher return on Class A shares due to the lower ongoing
            charges will offset the initial sales charge paid on such shares,
            the automatic conversion of Class B shares to Class A shares and
            the difference in the CDSCs applicable to Class A, Class B and
            Class C shares.
 
            Class A The initial sales charge alternative (Class A) might be
            preferred by investors purchasing shares of sufficient aggregate
            value to qualify for reductions in the initial sales charge appli-
            cable to such shares. Similar reductions are not available on the
            contingent deferred sales charge alternative (Class B) or the as-
            set based sales charge alternative (Class C). Class A shares are
            subject to a servicing fee but are not subject to a distribution
            fee and, accordingly, such shares are expected to pay correspond-
            ingly higher dividends on a per share basis. However, because ini-
            tial sales charges are deducted at the time of purchase, not all
            of the purchase payment for Class A shares is invested initially.
            Class B and Class C shares might be preferable to investors who
            wish to have all purchase payments invested initially, although
            remaining subject to higher distribution and servicing fees and,
            for certain periods, being subject to a CDSC. An investor who
            qualifies for an elimination of the Class A initial sales charge
            should also consider whether he or she anticipates redeeming
            shares in a time period which will subject such shares to a CDSC
            as described below. See "Initial Sales Charge Alternative--Class A
            Shares--Class A Deferred Sales Charge" below.
 
            Class B Class B shares might be preferred by investors who intend
            to invest in the Funds for longer periods and who do not intend to
            purchase shares of sufficient aggregate value to qualify for sales
            charge reductions applicable to Class A shares. Both Class B and
            Class C shares can be purchased at net asset value without an ini-
            tial sales charge. However, unlike Class C shares, Class B shares
            convert into Class A shares after the shares have been held for
            seven years. After the conversion takes place, the shares will no
            longer be subject to a CDSC, and will be subject to the servicing
            fees charged for Class A shares which are lower than the distribu-
            tion and servicing fees charged on either Class B or Class C
            shares. See "Deferred Sales Charge Alternative--Class B Shares"
            below. Class B shares are not available for purchase by employer
            sponsored retirement plans.
 
            Class C Class C shares might be preferred by investors who intend
            to purchase shares which are not of sufficient aggregate value to
            qualify for Class A sales charges of 1% or less and who wish to
            have all purchase payments invested initially. Class C shares are
            preferable to Class B shares for investors who intend to maintain
            their investment for intermediate periods and therefore may also
            be preferable for investors who are unsure of the intended length
            of their investment. Unlike Class B shares, Class C shares are not
            subject to a CDSC after they have been held for one year and are
            subject to only a 1% CDSC during the first year. However, because
            Class C shares do not convert into Class A shares, Class B shares
            are preferable to Class C shares for investors who intend to main-
            tain their investment in the Funds for long periods. See "Asset
            Based Sales Charge Alternative--Class C Shares" below.
               In determining which class of shares to purchase, an investor
            should always consider whether any waiver or reduction of a sales
            charge or a CDSC is available. See generally "Initial Sales Charge
            Alternative--Class A Shares" and "Waiver of Contingent Deferred
            Sales Charges" below.
               The maximum single purchase of Class B shares of the Trust and
            series of PIMCO Funds: Pacific Investment Management Series ac-
            cepted is $249,999. The maximum single purchase of Class C shares
            of the Trust and series of PIMCO Funds: Pacific Investment Manage-
            ment Series accepted is $999,999. The Funds may refuse any order
            to purchase shares.
 
44  PIMCO Funds: Multi-Manager Series
<PAGE>
 
                                                                
                                                             Prospectus     
               For a description of the Distribution and Servicing Plans and
            distribution and servicing fees payable thereunder with respect to
            Class A, Class B and Class C shares, see "Distributor and Distri-
            bution and Servicing Plans" below.
 
            Waiver of Contingent Deferred Sales Charges The CDSC applicable to
            Class A and Class C shares is currently waived for (i) any partial
            or complete redemption in connection with (a) required minimum
            distributions to IRA account owners or beneficiaries who are age
            70 1/2 or older or (b) distributions to participants in employer-
            sponsored retirement plans upon attaining age 59 1/2 or on account
            of death or disability; (ii) any partial or complete redemption in
            connection with a qualifying loan or hardship withdrawal from an
            employer sponsored retirement plan; (iii) any complete redemption
            in connection with a distribution from a qualified employer re-
            tirement plan in connection with termination of employment or ter-
            mination of the employer's plan and the transfer to another em-
            ployer's plan or to an IRA (with the exception of a Roth IRA);
            (iv) any partial or complete redemption following death or dis-
            ability (as defined in the Code) of a shareholder (including one
            who owns the shares as joint tenant with his or her spouse) from
            an account in which the deceased or disabled is named, provided
            the redemption is requested within one year of the death or ini-
            tial determination of disability; (v) any redemption resulting
            from a return of an excess contribution to a qualified employer
            retirement plan or an IRA (with the exception of a Roth IRA); (vi)
            up to 10% per year of the value of an account which (a) has the
            value of at least $10,000 at the start of such year and (b) is
            subject to an Automatic Withdrawal Plan; (vii) redemptions by
            Trustees, officers and employees of the Trust, and by directors,
            officers and employees of the Distributor and the Adviser; (viii)
            redemptions effected pursuant to a Fund's right to involuntarily
            redeem a shareholder's account if the aggregate net asset value of
            shares held in such shareholder's account is less than a minimum
            account size specified in such Fund's prospectus; (ix) involuntary
            redemptions caused by operation of law; (x) redemption of shares
            of any Fund that is combined with another Fund, investment compa-
            ny, or personal holding company by virtue of a merger, acquisition
            or other similar reorganization transaction; (xi) redemptions by a
            shareholder who is a participant making periodic purchases of not
            less than $50 through certain employer sponsored savings plans
            that are clients of a broker-dealer with which the Distributor has
            an agreement with respect to such purchases; (xii) redemptions ef-
            fected by trustees or other fiduciaries who have purchased shares
            for employer sponsored plans, the trustee, administrator, fiducia-
            ry, broker, trust company or registered investment adviser for
            which has an agreement with the Distributor with respect to such
            purchases; or (xiii) redemptions in connection with IRA accounts
            established with Form 5305-SIMPLE under the Code for which the
            Trust is the designated financial institution.
               The CDSC applicable to Class B shares is currently waived for
            any partial or complete redemption in each of the following cases:
            (a) in connection with required minimum distributions to IRA ac-
            count owners or to plan participants or beneficiaries who are age
            70 1/2 or older; (b) following death or disability (as defined in
            the Code) of a shareholder (including one who owns the shares as
            joint tenant with his or her spouse) from an account in which the
            deceased or disabled is named, provided the redemption is re-
            quested within one year of the death or initial determination of
            disability; and (c) up to 10% per year of the value of an account
            which (i) has a value of at least $100,000 at the start of such
            year and (ii) is subject to an Automatic Withdrawal Plan. See "How
            to Redeem--Automatic Withdrawal Plan."
               The Distributor may require documentation prior to waiver of
            the CDSC for any class, including distribution letters, certifica-
            tion by plan administrators, applicable tax forms, death certifi-
            cates, physicians' certificates, etc.
 
            Class A shares are sold at a public offering price equal to their
            net asset value per share plus a sales charge, as set forth below.
            As indicated below under "Class A Deferred Sales Charge," certain
            investors that purchase $1,000,000 or more of any Fund's Class A
            shares (and thus pay no initial sales charge) may be subject to a
            1% CDSC if they redeem such shares during the first 18 months af-
            ter their purchase.
Initial
Sales
Charge
Alternative --
Class A
Shares
 
                                       45
<PAGE>
 
           All Funds
 
<TABLE>
<CAPTION>
                                                               Discount or
                                Sales Charge as Sales Charge   Commission to
           Amount of            % of Net        as % of Public Dealers as % of
           Purchase             Amount Invested Offering Price Public Offering Price
           -------------------------------------------------------------------------
           <S>                  <C>             <C>            <C>
           $0 - $49,999         5.82%           5.50%          4.75%
           -------------------------------------------------------------------------
           $50,000 - $99,999    4.71%           4.50%          4.00%
           -------------------------------------------------------------------------
           $100,000 - $249,999  3.63%           3.50%          3.00%
           -------------------------------------------------------------------------
           $250,000 - $499,999  2.56%           2.50%          2.00%
           -------------------------------------------------------------------------
           $500,000 - $999,999  2.04%           2.00%          1.75%
           -------------------------------------------------------------------------
           $1,000,000+          0.00%(/1/)      0.00%(/1/)     0.75%(/2/)
</TABLE>
            1. As shown, investors that purchase more than $1,000,000 of any
            Fund's Class A shares will not pay any initial sales charge on
            such purchase. However, purchasers of $1,000,000 or more of Class
            A shares (other than those purchasers described below under "Sales
            at Net Asset Value" where no commission is paid) will be subject
            to a CDSC of 1% if such shares are redeemed during the first 18
            months after such shares are purchased unless such purchaser is
            eligible for a waiver of the CDSC as described under "Waiver of
            Contingent Deferred Sales Charges" above. See "Class A Deferred
            Sales Charge" below.
 
            2. The Distributor will pay a commission to dealers who sell
            amounts of $1,000,000 or more of Class A shares (or who sell Class
            A shares at net asset value to certain employer-sponsored plans as
            outlined in "Sales at Net Asset Value" below) of each Fund accord-
            ing to the following schedule: 0.75% of the first $2,000,000,
            0.50% of amounts from $2,000,001 to $5,000,000, and 0.25% of
            amounts over $5,000,000.
 
               Each Fund receives the entire net asset value of its Class A
            shares purchased by investors. The Distributor receives the sales
            charge shown above less any applicable discount or commission
            "reallowed" to participating brokers in the amounts indicated in
            the table above. The Distributor may, however, elect to reallow
            the entire sales charge to participating brokers for all sales
            with respect to which orders are placed with the Distributor for
            any particular Fund during a particular period. During such peri-
            ods as may from time to time be designated by the Distributor, the
            Distributor will pay an additional amount of up to 0.50% of the
            purchase price on sales of Class A shares of all or selected Funds
            purchased to each participating broker which obtains purchase or-
            ders in amounts exceeding thresholds established from time to time
            by the Distributor. From time to time, the Distributor, its parent
            and/or its affiliates may make additional payments to one or more
            participating brokers based upon factors such as the level of
            sales or the length of time clients' assets have remained in the
            Trust.
               Shares issued pursuant to the automatic reinvestment of income
            dividends or capital gains distributions are issued at net asset
            value and are not subject to any sales charges.
               Under the circumstances described below, investors may be enti-
            tled to pay reduced sales charges for Class A shares.
 
            Combined Purchase Privilege Investors may qualify for a reduced
            sales charge by combining purchases of the Class A shares of one
            or more Funds or other series of the Trust or of PIMCO Funds: Pa-
            cific Investment Management Series which offer Class A shares (to-
            gether, "eligible PIMCO Funds") into a "single purchase," if the
            resulting purchase totals at least $50,000. The term single pur-
            chase refers to:
               (i) a single purchase by an individual, or concurrent pur-
                   chases, which in the aggregate are at least equal to the
                   prescribed amounts, by an individual, his or her spouse and
                   their children under the age of 21 years purchasing Class A
                   shares of the eligible PIMCO Funds for his, her or their
                   own account;
               (ii) a single purchase by a trustee or other fiduciary purchas-
                    ing shares for a single trust, estate or fiduciary account
                    although more than one beneficiary is involved; or
               (iii) a single purchase for the employee benefit plans of a
                     single employer.
               For further information, call the Distributor at 1-800-426-0107
               or your broker.
 
46  PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
            Cumulative Quantity Discount (Right of Accumulation) A purchase of
            additional Class A shares of any eligible PIMCO Fund may qualify
            for a Cumulative Quantity Discount at the rate applicable to the
            discount bracket obtained by adding:
                (i) the investor's current purchase;
                (ii) the value (at the close of business on the day of the
                     current purchase) of all Class A shares of any eligible
                     PIMCO Fund held by the investor computed at the maximum
                     offering price; and
                (iii) the value of all shares described in paragraph (ii)
                      owned by another shareholder eligible to be combined
                      with the investor's purchase into a "single purchase" as
                      defined above under "Combined Purchase Privilege."
               For example, if you owned Class A shares of the Equity Income
            Fund worth $25,000 at the current maximum offering price and
            wished to purchase Class A shares of the Growth Fund worth an ad-
            ditional $30,000, the sales charge for the $30,000 purchase would
            be at the 4.50% rate applicable to a single $55,000 purchase of
            shares of the Growth Fund, rather than the 5.50% rate.
 
            Letter of Intent An investor may also obtain a reduced sales
            charge by means of a written Letter of Intent, which expresses an
            intention to invest not less than $50,000 within a period of 13
            months in Class A shares of any eligible PIMCO Fund(s). Each pur-
            chase of shares under a Letter of Intent will be made at the pub-
            lic offering price or prices applicable at the time of such pur-
            chase to a single transaction of the dollar amount indicated in
            the Letter. At the investor's option, a Letter of Intent may in-
            clude purchases of Class A shares of any eligible PIMCO Fund made
            not more than 90 days prior to the date the Letter of Intent is
            signed; however, the 13-month period during which the Letter is in
            effect will begin on the date of the earliest purchase to be in-
            cluded and the sales charge on any purchases prior to the Letter
            will not be adjusted.
               Investors qualifying for the Combined Purchase Privilege de-
            scribed above may purchase shares of the eligible PIMCO Funds un-
            der a single Letter of Intent. For example, if at the time you
            sign a Letter of Intent to invest at least $100,000 in Class A
            shares of any Fund, you and your spouse each purchase Class A
            shares of the Growth Fund worth $30,000 (for a total of $60,000),
            it will only be necessary to invest a total of $40,000 during the
            following 13 months in Class A shares of any of the Funds to qual-
            ify for the 3.50% sales charge on the total amount being invested
            (the sales charge applicable to an investment of $100,000 in any
            of the Funds).
               A Letter of Intent is not a binding obligation to purchase the
            full amount indicated. The minimum initial investment under a Let-
            ter of Intent is 5% of such amount. Shares purchased with the
            first 5% of such amount will be held in escrow (while remaining
            registered in your name) to secure payment of the higher sales
            charge applicable to the shares actually purchased in the event
            the full intended amount is not purchased. If the full amount in-
            dicated is not purchased, a sufficient amount of such escrowed
            shares will be involuntarily redeemed to pay the additional sales
            charge applicable to the amount actually purchased, if necessary.
            Dividends on escrowed shares, whether paid in cash or reinvested
            in additional eligible PIMCO Fund shares, are not subject to es-
            crow. When the full amount indicated has been purchased, the es-
            crow will be released.
               If you wish to enter into a Letter of Intent in conjunction
            with your initial investment in Class A shares of a Fund, you
            should complete the appropriate portion of the account applica-
            tion. If you are a current Class A shareholder desiring to do so
            you may obtain a form of Letter of Intent by contacting the Dis-
            tributor at 1-800-426-0107 or any broker participating in this
            program.
 
            Reinstatement Privilege A Class A shareholder who has caused any
            or all of his shares to be redeemed may reinvest all or any por-
            tion of the redemption proceeds in Class A shares of any eligible
            PIMCO Fund at net asset value without any sales charge, provided
            that such reinvestment is made within 120 calendar days after the
            redemption or repurchase date. Shares are sold to a reinvesting
            shareholder at the net asset value next determined. See "How Net
            Asset Value is Determined." A reinstatement pursuant to this priv-
            ilege will not cancel the redemption transaction and, consequent-
            ly, any gain or loss so realized may be recognized for federal tax
            purposes except that no loss may be
 
                                                                
                                                             Prospectus  47    


<PAGE>
 

            recognized to the extent that the proceeds are reinvested in
            shares of the same Fund within 30 days. The reinstatement privi-
            lege may be utilized by a shareholder only once, irrespective of
            the number of shares redeemed, except that the privilege may be
            utilized without limit in connection with transactions whose sole
            purpose is to transfer a shareholder's interest in a Fund to his
            Individual Retirement Account or other qualified retirement plan
            account. An investor may exercise the reinstatement privilege by
            written request sent to the Distributor or to the investor's bro-
            ker.
 
            Sales at Net Asset Value Each Fund may sell its Class A shares at
            net asset value without a sales charge to (a) current or retired
            officers, trustees, directors or employees of the Trust, the Ad-
            viser or the Distributor, a parent, brother or sister of any such
            officer, trustee, director or employee or a spouse or child of any
            of the foregoing persons, or any trust, profit sharing or pension
            plan for the benefit of any such person and to any other person if
            the Distributor anticipates that there will be minimal sales ex-
            penses associated with the sale, (b) current or retired trustees
            of PIMCO Funds: Pacific Investment Management Series, a registered
            investment company for which Pacific Investment Management, an af-
            filiate of the Adviser, acts as investment adviser, (c) current
            registered representatives and other full-time employees of par-
            ticipating brokers or such persons' spouses or for trust or custo-
            dial accounts for their minor children, (d) trustees or other fi-
            duciaries purchasing shares for certain plans sponsored by employ-
            ers, professional organizations or associations or charitable or-
            ganizations, the trustee, administrator, fiduciary, broker, trust
            company or registered investment adviser for which has an agree-
            ment with the Distributor with respect to such purchases (includ-
            ing provisions related to minimum levels of investment in the
            Trust), and to participants in such plans and their spouses pur-
            chasing for their account(s) or IRAs (with the exception of Roth
            IRAs), (e) participants investing through accounts known as "wrap
            accounts" established with brokers or dealers approved by the Dis-
            tributor where such brokers or dealers are paid a single, inclu-
            sive fee for brokerage and investment management services, (f)
            client accounts of broker-dealers or registered investment advis-
            ers affiliated with such broker-dealers with which the Distributor
            has an agreement for the use of PIMCO Funds: Multi-Manager Series
            in particular investment products or programs, and (g) accounts
            for which a trust company affiliated with the Trust or the Adviser
            serves as trustee or custodian. As described above, the Distribu-
            tor will not pay any initial commission to dealers upon the sale
            of Class A shares to the purchasers described in this paragraph
            except for sales to purchasers described under (d) in this para-
            graph.
 
            Notification of Distributor An investor or participating broker
            must notify the Distributor whenever a quantity discount or re-
            duced sales charge is applicable to a purchase and must provide
            the Distributor with sufficient information at the time of pur-
            chase to verify that each purchase qualifies for the privilege or
            discount. Upon such notification, the investor will receive the
            lowest applicable sales charge. The quantity discounts described
            above may be modified or terminated at any time.
 
            Class A Deferred Sales Charge For all Funds, investors who pur-
            chase $1,000,000 or more of Class A shares (and, thus, purchase
            such shares without any initial sales charge) may be subject to a
            1% CDSC (the "Class A CDSC") if such shares are redeemed within 18
            months of their purchase. The Class A CDSC does not apply to in-
            vestors purchasing $1,000,000 or more of any Fund's Class A shares
            if such investors are otherwise eligible to purchase Class A
            shares without any sales charge because they are described under
            "Sales at Net Asset Value" above.
               For purchases subject to the Class A CDSC, a 1% CDSC will apply
            for any redemption of such Class A shares that occurs within 18
            months of their purchase. No CDSC will be imposed if the shares
            redeemed have been acquired through the reinvestment of dividends
            or capital gains distributions or if the amount redeemed is de-
            rived from increases in the value of the account above the amount
            of purchase payments subject to the CDSC. In determining whether a
            CDSC is payable, it is assumed that Class A shares acquired
            through the reinvestment of dividends and distributions are re-
            deemed first, and thereafter that Class A shares that have been
            held by an investor for the longest period of time are redeemed
            first.
 
48  PIMCO Funds: Multi-Manager Series
<PAGE>
 
               The Class A CDSC is currently waived in connection with certain
            redemptions as described above under "Alternative Purchase Ar-
            rangements--Waiver of Contingent Deferred Sales Charges." For more
            information about the Class A CDSC, call the Distributor at 1-800-
            426-0107.
 
            Participating Brokers Investment dealers and other financial in-
            termediaries provide varying arrangements for their clients to
            purchase and redeem Fund shares. Some may establish higher minimum
            investment requirements than set forth above. Firms may arrange
            with their clients for other investment or administrative services
            and may independently establish and charge transaction fees and/or
            other additional amounts to their clients for such services, which
            charges would reduce clients' return. Firms also may hold Fund
            shares in nominee or street name as agent for and on behalf of
            their customers. In such instances, the Trust's transfer agent
            will have no information with respect to or control over accounts
            of specific shareholders. Such shareholders may obtain access to
            their accounts and information about their accounts only from
            their broker. In addition, certain privileges with respect to the
            purchase and redemption of shares or the reinvestment of dividends
            may not be available through such firms. Some firms may partici-
            pate in a program allowing them access to their clients' accounts
            for servicing including, without limitation, transfers of regis-
            tration and dividend payee changes; and may perform functions such
            as generation of confirmation statements and disbursement of cash
            dividends. This Prospectus should be read in connection with such
            firms' material regarding their fees and services.
 
Deferred
SalesCharge Alternative
- -- Class B
Shares
            Class B shares are sold at their current net asset value without
            any initial sales charge. The full amount of an investor's pur-
            chase payment will be invested in shares of the Fund(s) selected.
            A CDSC will be imposed on Class B shares if an investor redeems an
            amount which causes the current value of the investor's account
            for a Fund to fall below the total dollar amount of purchase pay-
            ments subject to the CDSC, except that no CDSC is imposed if the
            shares redeemed have been acquired through the reinvestment of
            dividends or capital gains distributions or if the amount redeemed
            is derived from increases in the value of the account above the
            amount of purchase payments subject to the CDSC.
               Whether a CDSC is imposed and the amount of the CDSC will de-
            pend on the number of years since the investor made a purchase
            payment from which an amount is being redeemed. Purchases are sub-
            ject to the CDSC according to the following schedule:
 
 
<TABLE>
<CAPTION>
           Year Since Purchase   Percentage Contingent
           Payment was Made      Deferred Sales Charge
              ----------------------------------------
           <S>                   <C>
           First                   5
              ----------------------------------------
           Second                  4
              ----------------------------------------
           Third                   3
              ----------------------------------------
           Fourth                  3
              ----------------------------------------
           Fifth                   2
              ----------------------------------------
           Sixth                   1
              ----------------------------------------
           Seventh                 0*
</TABLE>
 
            *After the seventh year, Class B shares convert into Class A
            shares as described below.
 
               In determining whether a CDSC is payable, it is assumed that
            the purchase payment from which a redemption is made is the earli-
            est purchase payment from which a redemption or exchange has not
            already been fully effected.
               The following example will illustrate the operation of the
            Class B CDSC:
               Assume that an individual opens an account and makes a purchase
            payment of $10,000 for Class B shares of a Fund and that six
            months later the value of the investor's account for that Fund has
            grown through investment performance and reinvestment of distribu-
            tions to $11,000. The investor then may redeem up to $1,000 from
            that
 
                                                                
                                                             Prospectus  49    


<PAGE>
 

            Fund ($11,000 minus $10,000) without incurring a CDSC. If the in-
            vestor should redeem $3,000, a CDSC would be imposed on $2,000 of
            the redemption (the amount by which the investor's account for the
            Fund was reduced below the amount of the purchase payment). At the
            rate of 5%, the Class B CDSC would be $100.
               In determining whether an amount is available for redemption
            without incurring a CDSC, the purchase payments made for all Class
            B shares in the shareholder's account with the particular Fund are
            aggregated, and the current value of all such shares is aggregat-
            ed. Any CDSC imposed on a redemption of Class B shares is paid to
            the Distributor.
               Class B shares are subject to higher distribution fees than
            Class A shares for a fixed period after their purchase, after
            which they automatically convert to Class A shares and are no
            longer subject to such higher distribution fees. Class B shares of
            each Fund automatically convert into Class A shares after they
            have been held for seven years.
               For sales of Class B shares made and services rendered to Class
            B shareholders, the Distributor intends to make payments to par-
            ticipating brokers, at the time a shareholder purchases Class B
            shares, of 4.00% of the purchase amount for each of the Funds.
            During such periods as may from time to time be designated by the
            Distributor, the Distributor will pay selected participating bro-
            kers an additional amount of up to .50% of the purchase price on
            sales of Class B shares of all or selected Funds purchased to each
            participating broker which obtains purchase orders in amounts ex-
            ceeding thresholds established from time to time by the Distribu-
            tor.
               The Class B CDSC is currently waived in connection with certain
            redemptions as described above under "Alternative Purchase Ar-
            rangements --Waiver of Contingent Deferred Sales Charges." For
            more information about the Class B CDSC, call the Distributor at
            1-800-426-0107.
 
Asset Based
Sales
Charge
Alternative --
Class C
Shares      Class C shares are sold at their current net asset value without
            any initial sales charge. A CDSC is imposed on Class C shares if
            an investor redeems an amount which causes the current value of
            the investor's account for a Fund to fall below the total dollar
            amount of purchase payments subject to the CDSC, except that no
            CDSC is imposed if the shares redeemed have been acquired through
            the reinvestment of dividends or capital gains distributions or if
            the amount redeemed is derived from increases in the value of the
            account above the amount of purchase payments subject to the CDSC.
            All of an investor's purchase payments are invested in shares of
            the Fund(s) selected.
               Whether a CDSC is imposed and the amount of the CDSC will de-
            pend on the number of years since the investor made a purchase
            payment from which an amount is being redeemed. Purchases are sub-
            ject to the CDSC according to the following schedule:
 
 
<TABLE>
<CAPTION>
           Year Since Purchase   Percentage Contingent
           Payment was Made      Deferred Sales Charge
              ----------------------------------------
           <S>                   <C>
           First                   1
              ----------------------------------------
           Thereafter              0
</TABLE>
 
 
               In determining whether a CDSC is payable, it is assumed that
            the purchase payment from which the redemption is made is the ear-
            liest purchase payment (from which a redemption or exchange has
            not already been effected).
               
               The following example will illustrate the operation of the
            Class C CDSC:     
               
               Assume that an individual opens an account and makes a purchase
            payment of $10,000 for Class C shares of a Fund and that six
            months later the value of the investor's account for that Fund has
            grown through investment performance and reinvestment of distribu-
            tions to $11,000. The investor then may redeem up to $1,000 from
            that Fund ($11,000 minus $10,000) without incurring a CDSC. If the
            investor should redeem $3,000, a CDSC would be imposed on $2,000
            of the redemption (the amount by which the investor's account for
            the Fund was reduced below the amount of the purchase payment). At
            the rate of 1%, the Class C CDSC would be $20.     
 
50  PIMCO Funds: Multi-Manager Series
<PAGE>
 
               
               In determining whether an amount is available for redemption
            without incurring a CDSC, the purchase payments made for all Class
            C shares in the shareholder's account with the particular Fund are
            aggregated, and the current value of all such shares is aggregat-
            ed. Any CDSC imposed on a redemption of Class C shares is paid to
            the Distributor. Unlike Class B shares, Class C shares do not au-
            tomatically convert to any other class of shares of the Funds.
                   
               Except as described below, for sales of Class C shares made and
            services rendered to Class C shareholders, the Distributor expects
            to make payments to participating brokers, at the time the share-
            holder purchases Class C shares, of 1.00% (representing .75% dis-
            tribution fees and .25% servicing fees) of the purchase amount for
            all Funds. For sales of Class C shares made to participants making
            periodic purchases of not less than $50 through certain employer
            sponsored savings plans which are clients of a broker-dealer with
            which the Distributor has an agreement with respect to such pur-
            chases, no payments are made at the time of purchase. During such
            periods as may from time to time be designated by the Distributor,
            the Distributor will pay an additional amount of up to .50% of the
            purchase price on sales of Class C shares of all or selected Funds
            purchased to each participating broker which obtains purchase or-
            ders in amounts exceeding thresholds established from time to time
            by the Distributor.     
               
               The Class C CDSC is currently waived in connection with certain
            redemptions as described above under "Alternative Purchase Ar-
            rangements--Waiver of Contingent Deferred Sales Charges." For more
            information about the Class C CDSC, contact the Distributor at 1-
            800-426-0107.     
 
            Exchange Privilege
               
            Except with respect to exchanges for shares of Funds for which
            sales are suspended to new investors, a shareholder may exchange
            Class A, Class B and Class C shares of any Fund for the same Class
            of shares of any other Fund in an account with identical registra-
            tion on the basis of their respective net asset values. Class A,
            Class B and Class C shares of each Fund may also be exchanged for
            shares of the same class of another series of the Trust not of-
            fered in this Prospectus (including the PIMCO Funds Asset Alloca-
            tion Series portfolios, which are so-called "funds-of-funds" port-
            folios offered by the Trust) or of a series of PIMCO Funds: Pa-
            cific Investment Management Series, an affiliated mutual fund fam-
            ily comprised primarily of fixed income portfolios managed by Pa-
            cific Investment Management, an affiliate of the Adviser. There
            are currently no exchange fees or charges. All exchanges, includ-
            ing exchanges from PIMCO Funds Asset Allocation Series portfolios
            into other series of the Trust or of PIMCO Funds: Pacific Invest-
            ment Management Series, are subject to the $2,500 minimum initial
            purchase requirement for each Fund, except with respect to tax-
            qualified programs and exchanges effected through the PIMCO Funds
            Auto-Exchange plan. An exchange will constitute a taxable sale for
            federal income tax purposes.     
               Investors who maintain their account with the Distributor may
            exchange shares by a written exchange request sent to PIMCO Funds
            Distributors LLC, P.O. Box 9688, Providence, RI 02940-0926 or, un-
            less the investor has specifically declined telephone exchange
            privileges on the account application or elected in writing not to
            utilize telephone exchanges, by a telephone request to the Dis-
            tributor at 1-800-426-0107. The Trust will employ reasonable pro-
            cedures to confirm that instructions communicated by telephone are
            genuine, and may be liable for any losses due to unauthorized or
            fraudulent instructions if it fails to employ such procedures. The
            Trust will require a form of personal identification prior to act-
            ing on a caller's telephone instructions, will provide written
            confirmations of such transactions and will record telephone in-
            structions. Exchange forms are available from the Distributor at
            1-800-426-0107 and may be used if there will be no change in the
            registered name or address of the shareholder. Changes in regis-
            tration information or account privileges may be made in writing
            to the Transfer Agent, First Data Investor Services Group, Inc.,
            P.O. Box 9688, Providence, RI 02940-0926, or by use of forms which
            are available from the Distributor. A signature guarantee is re-
            quired. See "How to Buy Shares--Signature Guarantee." Telephone
            exchanges may be made between 9:00 a.m., Eastern time and the
            close of regular trading (normally 4:00 p.m., Eastern time) on the
            Exchange on any day the Exchange is open (generally weekdays other
            than normal holidays). The Trust reserves
 

                                                                
                                                             Prospectus  51    

<PAGE>
 

            the right to refuse exchange purchases if, in the judgment of the
            Adviser, the purchase would adversely affect the Fund and its
            shareholders. In particular, a pattern of exchanges characteristic
            of "market-timing" strategies may be deemed by the Adviser to be
            detrimental to the Trust or a particular Fund.
               
               Currently, the Trust limits the number of "round trip" ex-
            changes an investor may make. An investor makes a "round trip" ex-
            change when the investor purchases shares of a particular Fund,
            subsequently exchanges those shares for shares of a different
            Fund, and then exchanges back into the originally purchased Fund.
            The Trust has the right to refuse any exchange for any investor
            who completes (by making the exchange back into the shares of the
            originally purchased Fund) more than six round trip exchanges in
            any twelve-month period. Although the Trust has no current inten-
            tion of terminating or modifying the exchange privilege other than
            as set forth in the preceding sentence, it reserves the right to
            do so at any time. Except as otherwise permitted by Securities and
            Exchange Commission regulations, the Trust will give 60 days' ad-
            vance notice to shareholders of any termination or material modi-
            fication of the exchange privilege. For further information about
            exchange privileges, contact your participating broker or call the
            Distributor at 1-800-426-0107.     
               With respect to Class B and Class C shares, or Class A shares
            subject to a CDSC, if less than all of an investment is exchanged
            out of a Fund, any portion of the investment attributable to capi-
            tal appreciation and/or reinvested dividends or capital gains dis-
            tributions will be exchanged first, and thereafter any portions
            exchanged will be from the earliest investment made in the Fund
            from which the exchange was made. Shareholders should take into
            account the effect of any exchange on the applicability of any
            CDSC that may be imposed upon any subsequent redemption.
               Investors may also select the PIMCO Funds Auto-Exchange plan
            which establishes automatic periodic exchanges. For further infor-
            mation on automatic exchanges see "How to Buy Shares--PIMCO Funds
            Auto-Exchange" above.
 
            How to Redeem
               
            Class A, Class B or Class C shares may be redeemed through a par-
            ticipating broker, by telephone, by submitting a written redemp-
            tion request directly to the Transfer Agent (for non-broker ac-
            counts), or through an Automatic Withdrawal Plan or PIMCO Funds
            Fund Link.     
               A CDSC may apply to a redemption of Class A, Class B or Class C
            shares. See "Alternative Purchase Arrangements" above. Shares are
            redeemed at their net asset value next determined after a proper
            redemption request has been received, less any applicable CDSC.
            There is no charge by the Distributor (other than an applicable
            CDSC) with respect to a redemption; however, a participating bro-
            ker who processes a redemption for an investor may charge custom-
            ary commissions for its services. Dealers and other financial
            services firms are obligated to transmit orders promptly. Requests
            for redemption received by dealers or other firms prior to the
            close of regular trading (normally 4:00 p.m., Eastern time) on the
            Exchange on a regular business day and received by the Distributor
            prior to the close of the Distributor's business day will be con-
            firmed at the net asset value effective as of the closing of the
            Exchange on that day, less any applicable CDSC.
 
Direct      A shareholder's original account application permits the share-
Redemption  holder to redeem by written request and by telephone (unless the
            shareholder specifically elects not to utilize telephone redemp-
            tions) and to elect one or more of the additional redemption pro-
            cedures described below. A shareholder may change the instructions
            indicated on his original account application, or may request ad-
            ditional redemption options, only by transmitting a written direc-
            tion to the Transfer Agent. Requests to institute or change any of
            the additional redemption procedures will require a signature
            guarantee.
               Redemption proceeds will normally be mailed to the redeeming
            shareholder within seven days or, in the case of wire transfer or
            Fund Link redemptions, sent to the designated bank account within
            one business day. Fund Link redemptions may be received by the
            bank on the second or third business day. In cases where shares
            have recently
 
52  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            been purchased by personal check, redemption proceeds may be with-
            held until the check has been collected, which may take up to 15
            days. To avoid such withholding, investors should purchase shares
            by certified or bank check or by wire transfer.
 
Written     To redeem shares in writing (whether or not represented by certif-
Requests    icates), a shareholder must send the following items to the Trans-
            fer Agent, First Data Investor Services Group, Inc., P.O. Box
            9688, Providence, RI 02940-0926:
                (1) a written request for redemption signed by all registered
                    owners exactly as the account is registered on the Trans-
                    fer Agent's records, including fiduciary titles, if any,
                    and specifying the account number and the dollar amount or
                    number of shares to be redeemed;
                (2) for certain redemptions described below, a guarantee of
                    all signatures on the written request or on the share cer-
                    tificate or accompanying stock power, if required, as de-
                    scribed under "How to Buy Shares--Signature Guarantee";
                (3) any share certificates issued for any of the shares to be
                    redeemed (see "Certificated Shares" below); and
                (4) any additional documents which may be required by the
                    Transfer Agent for redemption by corporations, partner-
                    ships or other organizations, executors, administrators,
                    trustees, custodians or guardians, or if the redemption is
                    requested by anyone other than the shareholder(s) of rec-
                    ord.
               Transfers of shares are subject to the same requirements. A
            signature guarantee is not required for redemptions of $50,000 or
            less, requested by and payable to all shareholders of record for
            the account, to be sent to the address of record for that account.
            To avoid delay in redemption or transfer, shareholders having any
            questions about these requirements should contact the Transfer
            Agent in writing or call the Distributor at 1-800-426-0107 before
            submitting a request. Redemption or transfer requests will not be
            honored until all required documents in the proper form have been
            received by the Transfer Agent. This redemption option does not
            apply to shares held in broker "street name" accounts.
               If the proceeds of the redemption (i) exceed $50,000, (ii) are
            to be paid to a person other than the record owner, (iii) are to
            be sent to an address other than the address of the account on the
            Transfer Agent's records, or (iv) are to be paid to a corporation,
            partnership, trust or fiduciary, the signature(s) on the redemp-
            tion request and on the certificates, if any, or stock power must
            be guaranteed as described above, except that the Distributor may
            waive the signature guarantee requirement for redemptions up to
            $2,500 by a trustee of a qualified retirement plan, the adminis-
            trator for which has an agreement with the Distributor.
 
Telephone   The Trust accepts telephone requests for redemption of
Redemptions uncertificated shares for amounts up to $50,000 within any 7 cal-
            endar day period, except for investors who have specifically de-
            clined telephone redemption privileges on the account application
            or elected in writing not to utilize telephone redemptions. The
            proceeds of a telephone redemption will be sent to the record
            shareholder at his record address. Changes in account information
            must be made in a written authorization with a signature guaran-
            tee. See "How to Buy Shares--Signature Guarantee." Telephone re-
            demptions will not be accepted during the 30-day period following
            any change in an account's record address. This redemption option
            does not apply to shares held in broker "street name" accounts.
               By completing an account application, an investor agrees that
            the Trust, the Distributor and the Transfer Agent shall not be li-
            able for any loss incurred by the investor by reason of the Trust
            accepting unauthorized telephone redemption requests for his ac-
            count if the Trust reasonably believes the instructions to be gen-
            uine. Thus, shareholders risk possible losses in the event of a
            telephone redemption not authorized by them. The Trust may accept
            telephone redemption instructions from any person identifying him-
            self as the owner of an account or the owner's broker where the
            owner has not declined in writing to utilize this service. The
            Trust will employ reasonable procedures to confirm that instruc-
            tions communicated by telephone are genuine, and may be liable for
            any losses due to unauthorized or fraudulent instructions if it
            fails to employ such procedures. The Trust will require a form of
            personal identification prior to acting on a caller's telephone
            instructions, will provide written confirmations of such transac-
            tions and will record telephone instructions.
 

                                                                
                                                             Prospectus  53    

<PAGE>
 

               A shareholder making a telephone redemption should call the
            Distributor at 1-800-426-0107 and state (i) the name of the share-
            holder as it appears on the Transfer Agent's records, (ii) his ac-
            count number with the Trust, (iii) the amount to be withdrawn and
            (iv) the name of the person requesting the redemption. Usually the
            proceeds are sent to the investor on the next Trust business day
            after the redemption is effected, provided the redemption request
            is received prior to the close of regular trading (normally 4:00
            p.m., Eastern time) on the Exchange that day. If the redemption
            request is received after the close of the Exchange, the redemp-
            tion is effected on the following Trust business day at that day's
            net asset value and the proceeds are usually sent to the investor
            on the second following Trust business day. The Trust reserves the
            right to terminate or modify the telephone redemption service at
            any time. During times of severe disruptions in the securities
            markets, the volume of calls may make it difficult to redeem by
            telephone, in which case a shareholder may wish to send a written
            request for redemption as described under "Written Requests"
            above. Telephone communications may be recorded by the Distributor
            or the Transfer Agent.
 
Fund Link   If a shareholder has established Fund Link, the shareholder may
Redemptions redeem shares by telephone and have the redemption proceeds sent
            to a designated account at a financial institution. Fund Link is
            normally established within 45 days of receipt of a Fund Link ap-
            plication by the Transfer Agent. To use Fund Link for redemptions,
            call the Distributor at 1-800-426-0107. Subject to the limitations
            set forth above under "Telephone Redemptions," the Distributor,
            the Trust and the Transfer Agent may rely on instructions by any
            registered owner believed to be genuine and will not be responsi-
            ble to any shareholder for any loss, damage or expense arising out
            of such instructions. Requests received by the Transfer Agent
            prior to the close of regular trading (normally 4:00 p.m., Eastern
            time) on the Exchange on a business day will be processed at the
            net asset value on that day and the proceeds (less any CDSC) will
            normally be sent to the designated bank account on the following
            business day and received by the bank on the second or third busi-
            ness day. If the redemption request is received after the close of
            regular trading on the Exchange, the redemption is effected on the
            following business day. Shares purchased by check may not be re-
            deemed through Fund Link until such shares have been owned (i.e.,
            paid for) for at least 15 days. Fund Link may not be used to re-
            deem shares held in certificated form.
              Changes in bank account information must be made by completing a
            new Fund Link application, signed by all owners of record of the
            account, with all signatures guaranteed. See "How to Buy Shares--
            Signature Guarantee." See "How to Buy Shares--PIMCO Funds Fund
            Link" for information on establishing the Fund Link privilege. The
            Trust may terminate the Fund Link program at any time without no-
            tice to shareholders. This redemption option does not apply to
            shares held in broker "street name" accounts.
 
PIMCO Funds PIMCO Funds Automated Telephone System ("ATS") is an automated
Automated   telephone system that enables shareholders to perform a number of
Telephone   account transactions automatically using a touch-tone telephone.
System      ATS may be used on already-established Fund accounts after you ob-
            tain a Personal Identification Number (PIN) by calling the special
            ATS number: 1-800-223-2413.
            Purchasing Shares. You may purchase shares in amounts up to
            $100,000 by telephone by calling 1-800-223-2413. You must have es-
            tablished ATS privileges to link your bank account with the Fund
            to pay for these purchases.
            Exchanging Shares. With the PIMCO Funds Exchange Privilege, you
            can exchange shares automatically by telephone from your Fund Link
            Account to another PIMCO Funds account you have already estab-
            lished by calling 1-800-223-2413. Please refer to "Exchange Privi-
            lege" for details.
            Redemptions. You may redeem shares by telephone automatically by
            calling 1-800-223-2413 and the Fund will send the proceeds di-
            rectly to your Fund bank account. Please refer to "How to Redeem"
            for details.
 
54  PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
Expedited   If a shareholder has given authorization for expedited wire re-
Wire        demption, shares can be redeemed and the proceeds sent by federal
Transfer    wire transfer to a single previously designated bank account. Re-
Redemptions quests received by the Trust prior to the close of the Exchange
            will result in shares being redeemed that day at the next deter-
            mined net asset value (less any CDSC) and normally the proceeds
            being sent to the designated bank account the following business
            day. The bank must be a member of the Federal Reserve wire system.
            Delivery of the proceeds of a wire redemption request may be de-
            layed by the Trust for up to 7 days if the Distributor deems it
            appropriate under then current market conditions. Once authoriza-
            tion is on file, the Trust will honor requests by any person iden-
            tifying himself as the owner of an account or the owner's broker
            by telephone at 1-800-426-0107 or by written instructions. The
            Trust cannot be responsible for the efficiency of the Federal Re-
            serve wire system or the shareholder's bank. The Trust does not
            currently charge for wire transfers. The shareholder is responsi-
            ble for any charges imposed by the shareholder's bank. The minimum
            amount that may be wired is $2,500. The Trust reserves the right
            to change this minimum or to terminate the wire redemption privi-
            lege. Shares purchased by check may not be redeemed by wire trans-
            fer until such shares have been owned (i.e., paid for) for at
            least 15 days. Expedited wire transfer redemptions may be autho-
            rized by completing a form available from the Distributor. Wire
            redemptions may not be used to redeem shares in certificated form.
            To change the name of the single bank account designated to re-
            ceive wire redemption proceeds, it is necessary to send a written
            request with signatures guaranteed to PIMCO Funds Distributors
            LLC, P.O. Box 9688, Providence, RI 02940-0926. See "How to Buy
            Shares--Signature Guarantee." This redemption option does not ap-
            ply to shares held in broker "street name" accounts.
 
CertificatedTo redeem shares for which certificates have been issued, the cer-
Shares      tificates must be mailed to or deposited with the Trust, duly en-
            dorsed or accompanied by a duly endorsed stock power or by a writ-
            ten request for redemption. Signatures must be guaranteed as de-
            scribed under "How to Buy Shares--Signature Guarantee." Further
            documentation may be requested from institutions or fiduciary ac-
            counts, such as corporations, custodians (e.g., under the Uniform
            Gifts to Minors Act), executors, administrators, trustees or
            guardians ("institutional account owners"). The redemption request
            and stock power must be signed exactly as the account is regis-
            tered, including indication of any special capacity of the regis-
            tered owner.
 
Automatic   An investor who owns or buys shares of a Fund having a net asset
Withdrawal  value of $10,000 or more may open an Automatic Withdrawal Plan and
Plan        have a designated sum of money (not less than $100 per Fund) paid
            monthly (or quarterly) to the investor or another person. Such a
            plan may be established by completing the appropriate section of
            the account application or you may obtain an Automatic Withdrawal
            Plan application from the Distributor or your broker. If an Auto-
            matic Withdrawal Plan is set up after the account is established
            providing for payment to a person other than the record share-
            holder or to an address other than the address of record, a signa-
            ture guarantee is required. See "How to Buy Shares--Signature
            Guarantee." Class A, Class B and Class C shares of any Fund are
            deposited in a plan account and all distributions are reinvested
            in additional shares of the particular class of the Fund at net
            asset value. Shares in a plan account are then redeemed at net as-
            set value (less any applicable CDSC) to make each withdrawal pay-
            ment. Any applicable CDSC may be waived for certain redemptions
            under an Automatic Withdrawal Plan. See "Alternative Purchase Ar-
            rangements--Waiver of Contingent Deferred Sales Charges."
 
               Redemptions for the purpose of withdrawals are ordinarily made
            on the business day preceding the day of payment at that day's
            closing net asset value and checks are mailed on the day of pay-
            ment selected by the shareholder. The Transfer Agent may acceler-
            ate the redemption and check mailing date by one day to avoid
            weekend delays. Payment will be made to any person the investor
            designates; however, if the shares are registered in the name of a
            trustee or other fiduciary, payment will be made only to the fidu-
            ciary, except in the case of a profit-sharing or pension plan
            where payment will be made to the designee. As withdrawal payments
            may include a return of principal, they cannot be considered a
            guaranteed annuity or actual yield of income to the investor. The
            redemption of shares in
 
                                                                
                                                             Prospectus  55    

<PAGE>
 

            connection with an Automatic Withdrawal Plan may result in a gain
            or loss for tax purposes. Continued withdrawals in excess of in-
            come will reduce and possibly exhaust invested principal, espe-
            cially in the event of a market decline. The maintenance of an Au-
            tomatic Withdrawal Plan concurrently with purchases of additional
            shares of the Fund would be disadvantageous to the investor be-
            cause of the CDSC that may become payable on such withdrawals in
            the case of Class A, Class B or Class C shares and because of the
            initial sales charge in the case of Class A shares. For this rea-
            son, the minimum investment accepted for a Fund while an Automatic
            Withdrawal Plan is in effect for that Fund is $1,000, and an in-
            vestor may not maintain a plan for the accumulation of shares of
            the Fund (other than through reinvestment of distributions) and an
            Automatic Withdrawal Plan at the same time. The Trust or the Dis-
            tributor may terminate or change the terms of the Automatic With-
            drawal Plan at any time.
               Because the Automatic Withdrawal Plan may involve invasion of
            capital, investors should consider carefully with their own finan-
            cial advisers whether the plan and the specified amounts to be
            withdrawn are appropriate in their circumstances. The Trust and
            the Distributor make no recommendations or representations in this
            regard.
 
Redemptions The Trust agrees to redeem shares of each Fund solely in cash up
In Kind     to the lesser of $250,000 or 1% of the Fund's net assets during
            any 90-day period for any one shareholder. In consideration of the
            best interests of the remaining shareholders, the Trust reserves
            the right to pay any redemption proceeds exceeding this amount in
            whole or in part by a distribution in kind of securities held by a
            Fund in lieu of cash. Except for Funds with a tax-efficient man-
            agement strategy, it is highly unlikely that shares would ever be
            redeemed in kind. When shares are redeemed in kind, the redeeming
            shareholder should expect to incur transaction costs upon the dis-
            position of the securities received in the distribution.
 
            Distributor and Distribution and Servicing Plans
 
            PIMCO Funds Distributors LLC (the "Distributor"), a wholly owned
            subsidiary of the Adviser, is the principal underwriter of the
            Trust's shares and in that connection makes distribution and ser-
            vicing payments to participating brokers and servicing payments to
            certain banks and other financial intermediaries in connection
            with the sale of Class B and Class C shares and servicing payments
            to participating brokers, certain banks and other financial inter-
            mediaries in connection with the sale of Class A shares. In the
            case of Class A shares, these parties are also compensated based
            on the amount of the front-end sales charge reallowed by the Dis-
            tributor, except in cases where Class A shares are sold without a
            front-end sales charge (although the Distributor may pay brokers
            additional compensation in connection with sales of Class A shares
            without a sales charge). In the case of Class B shares, partici-
            pating brokers and other financial intermediaries are compensated
            by an advance of a sales commission by the Distributor. In the
            case of Class C shares, part or all of the first year's distribu-
            tion and servicing fee is generally paid at the time of sale.
            Pursuant to a Distribution Agreement with the Trust, with respect
            to each Fund's Class A, Class B and Class C shares, the Distribu-
            tor bears various other promotional and sales related expenses,
            including the cost of printing and mailing prospectuses to persons
            other than current shareholders. The Distributor, located at 2187
            Atlantic Street, Stamford, Connecticut 06902, is a broker-dealer
            registered with the Securities and Exchange Commission.
 
            Class A Servicing Fees As compensation for services rendered and
            expenses borne by the Distributor in connection with personal
            services rendered to Class A shareholders of the Trust and the
            maintenance of Class A shareholder accounts, the Trust pays the
            Distributor servicing fees up to the annual rate of .25% (calcu-
            lated as a percentage of each Fund's average daily net assets at-
            tributable to Class A shares).
 
            Class B and Class C Distribution and Servicing Fees As compensa-
            tion for services rendered and expenses borne by the Distributor
            in connection with the distribution of Class B and Class C shares
            of the Trust, and in connection with personal services rendered to
            Class B and Class C shareholders of the Trust and the maintenance
            of Class B and
 
56  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            Class C shareholder accounts, the Trust pays the Distributor ser-
            vicing and distribution fees up to the annual rates set forth be-
            low (calculated as a percentage of each Fund's average daily net
            assets attributable to Class B and Class C shares, respectively):
 
 
<TABLE>
<CAPTION>
                      Servicing Distribution
           Fund       Fee       Fee
           ---------------------------------
           <S>        <C>       <C>
           All Funds  .25%      .75%
</TABLE>
 
 
               The Class A servicing fees and Class B and Class C distribution
            and servicing fees paid to the Distributor are made under Distri-
            bution and Servicing Plans adopted pursuant to Rule 12b-l under
            the Investment Company Act of 1940, as amended (the "1940 Act"),
            and are of the type known as "compensation" plans. This means
            that, although the Trustees of the Trust are expected to take into
            account the expenses of the Distributor and its predecessors in
            their periodic review of the Distribution and Servicing Plans, the
            fees are payable to compensate the Distributor for services ren-
            dered even if the amount paid exceeds the Distributor's expenses.
               The distribution fee applicable to Class B and Class C shares
            may be spent by the Distributor on any activities or expenses pri-
            marily intended to result in the sale of Class B or Class C
            shares, respectively, including compensation to, and expenses (in-
            cluding overhead and telephone expenses) of, financial consultants
            or other employees of the Distributor or of participating or in-
            troducing brokers who engage in distribution of Class B or Class C
            shares, printing of prospectuses and reports for other than exist-
            ing Class B or Class C shareholders, advertising, and preparation,
            printing and distribution of sales literature. The servicing fee,
            applicable to Class A, Class B and Class C shares of the Trust,
            may be spent by the Distributor on personal services rendered to
            shareholders of the Trust and the maintenance of shareholder ac-
            counts, including compensation to, and expenses (including tele-
            phone and overhead expenses) of, financial consultants or other
            employees of participating or introducing brokers, certain banks
            and other financial intermediaries who aid in the processing of
            purchase or redemption requests or the processing of dividend pay-
            ments, who provide information periodically to shareholders show-
            ing their positions in a Fund's shares, who forward communications
            from the Trust to shareholders, who render ongoing advice concern-
            ing the suitability of particular investment opportunities offered
            by the Trust in light of the shareholders' needs, who respond to
            inquiries from shareholders relating to such services, or who
            train personnel in the provision of such services. Distribution
            and servicing fees may also be spent on interest relating to
            unreimbursed distribution or servicing expenses from prior years.
               Many of the Distributor's sales and servicing efforts involve
            the Trust as a whole, so that fees paid by Class A, Class B or
            Class C shares of any Fund may indirectly support sales and ser-
            vicing efforts relating to the other Funds' shares of the same
            class. In reporting its expenses to the Trustees, the Distributor
            itemizes expenses that relate to the distribution and/or servicing
            of a single Fund's shares, and allocates other expenses among the
            Funds based on their relative net assets. Expenses allocated to
            each Fund are further allocated among its classes of shares annu-
            ally based on the relative sales of each class, except for any ex-
            penses that relate only to the sale or servicing of a single
            class. The Distributor may make payments to brokers (and with re-
            spect to servicing fees only, to certain banks and other financial
            intermediaries) of up to the following percentages annually of the
            average daily net assets attributable to shares in the accounts of
            their customers or clients:
 
                                                                
                                                             Prospectus  57    


<PAGE>
 

 
 
              All Funds(/1/)
 
<TABLE>
<CAPTION>
                            Servicing Distribution
                            Fee       Fee
              ------------------------------------
           <S>              <C>       <C>
           Class A          .25%      N/A
              ------------------------------------
           Class B (/2/)    .25%      None
              ------------------------------------
           Class C
            (purchased
            before July 1,
            1991)           .25%      None
              ------------------------------------
           Class C (/3/)
            (purchased on
            or after July
            1, 1991)        .25%      .65%
</TABLE>
 
            1. Applies, in part, to Class A, Class B and Class C shares of the
            Trust issued to former shareholders of PIMCO Advisors Funds in
            connection with the reorganizations/mergers of series of PIMCO Ad-
            visors Funds as/with Funds of the Trust in transactions which took
            place on January 17, 1997.
            2. Payable only with respect to shares outstanding for one year or
            more.
            3. Payable only with respect to shares outstanding for one year or
            more except in the case of shares for which no payment is made to
            the party at the time of sale.
 
               The Distributor may from time to time pay additional cash bo-
            nuses or other incentives to selected participating brokers in
            connection with the sale or servicing of Class A, Class B and
            Class C shares of the Funds. On some occasions, such bonuses or
            incentives may be conditioned upon the sale of a specified minimum
            dollar amount of the shares of a Fund and/or all of the Funds to-
            gether or a particular class of shares, during a specific period
            of time. The Distributor currently expects that such additional
            bonuses or incentives will not exceed .50% of the amount of any
            sale. In its capacity as administrator for the Funds, PIMCO Advi-
            sors may pay participating brokers and other intermediaries for
            sub-transfer agency and other services.
               If in any year the Distributor's expenses incurred in connec-
            tion with the distribution of Class B and Class C shares and, for
            Class A, Class B and Class C shares, in connection with the ser-
            vicing of shareholders and the maintenance of shareholder ac-
            counts, exceed the distribution and/or servicing fees paid by the
            Trust, the Distributor would recover such excess only if the Dis-
            tribution and Servicing Plan with respect to such class of shares
            continues to be in effect in some later year when the distribution
            and/or servicing fees exceed the Distributor's expenses. The Trust
            is not obligated to repay any unreimbursed expenses that may exist
            at such time, if any, as the relevant Distribution and Servicing
            Plan terminates.
               From time to time, expenses of principal underwriters incurred
            in connection with the distribution of Class B and Class C shares
            of the Funds, and in connection with the servicing of Class A,
            Class B and Class C shareholders of the Funds and the maintenance
            of Class A, Class B and Class C shareholder accounts, may exceed
            the distribution and/or servicing fees collected by the Distribu-
            tor. Class A, Class B and Class C Distribution and Servicing
            Plans, which are similar to the Trust's current Plans, were in ef-
            fect prior to January 17, 1997 in respect of series of PIMCO Advi-
            sors Funds that were predecessors of certain Funds of the Trust.
            The remaining Funds did not offer Class A, Class B or Class C
            shares prior to January 17, 1997. As of June 30, 1998, such ex-
            penses were approximately $11,946,000 in excess of payments under
            the Class A Plan, $22,563,000 in excess of payments under the
            Class B Plan and $2,252,000 in excess of payments under the Class
            C Plan.
 
            How Net Asset Value Is Determined
 
            The net asset values of Class A, Class B and Class C shares of
            each Fund of the Trust will be determined once on each day on
            which the Exchange is open (a "Business Day"), as of the close of
            regular trading (normally 4:00 p.m., Eastern time) on the Ex-
            change. Net asset value will not be determined on days on which
            the Exchange is closed.
               Portfolio securities and other assets for which market quota-
            tions are readily available are stated at market value. Fixed in-
            come securities are normally valued on the basis of quotations ob-
            tained from brokers and dealers or pricing services, which take
            into account appropriate factors such as institutional-sized trad-
            ing in similar groups of securities,
 
58  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            yield, quality, coupon rate, maturity, type of issue, trading
            characteristics, and other market data. Certain fixed income secu-
            rities for which daily market quotations are not readily available
            may be valued, pursuant to guidelines established by the Board of
            Trustees, with reference to fixed income securities whose prices
            are more readily obtainable and whose durations are comparable to
            the securities being valued. Short-term investments having a matu-
            rity of 60 days or less are valued at amortized cost, when the
            Board of Trustees determines that amortized cost is their fair
            value. Exchange-traded options, futures and options on futures are
            valued at the settlement price as determined by the appropriate
            clearing corporation. All other securities and assets are valued
            at their fair value as determined in good faith by the Trustees or
            by persons acting at their direction.
               
               Quotations of foreign securities in foreign currency are con-
            verted to U.S. dollar equivalents using foreign exchange quota-
            tions received from independent dealers. The calculation of the
            net asset value of the International and Precious Metals Funds may
            not take place contemporaneously with the determination of the
            prices of certain portfolio securities of foreign issuers used in
            such calculation. Further, under the Trust's procedures, the
            prices of foreign securities are determined using information de-
            rived from pricing services and other sources. Information that
            becomes known to the Trust or its agents after the time that net
            asset value is calculated on any Business Day may be assessed in
            determining net asset value per share after the time of receipt of
            the information, but will not be used to retroactively adjust the
            price of the security so determined earlier or on a prior day.
            Events affecting the values of portfolio securities that occur be-
            tween the time their prices are determined and the close of regu-
            lar trading on the Exchange (normally 4:00 p.m., Eastern time) may
            not be reflected in the calculation of net asset value. If events
            materially affecting the value of such securities occur during
            such period, then these securities may be valued at fair value as
            determined by the Adviser or a Sub-Adviser and approved in good
            faith by the Board of Trustees.     
               Each Fund's liabilities are allocated among its classes. The
            total of such liabilities allocated to a class plus that class's
            distribution and/or servicing fees and any other expenses spe-
            cially allocated to that class are then deducted from the class's
            proportionate interest in the Fund's assets, and the resulting
            amount for each class is divided by the number of shares of that
            class outstanding to produce the class's "net asset value" per
            share. Under certain circumstances, the per share net asset value
            of the Class B and Class C shares of the Funds that do not declare
            regular income dividends on a daily basis may be lower than the
            per share net asset value of the Class A shares as a result of the
            daily expense accruals of the distribution fee applicable to the
            Class B and Class C shares. Generally, for Funds that pay income
            dividends, those dividends are expected to differ over time by ap-
            proximately the amount of the expense accrual differential between
            a particular Fund's classes.
 
            Distributions
               
            Shares begin earning dividends on the day after the date that
            funds are received by the Trust for the purchase of Class A, Class
            B and Class C shares. Net investment income from interest and div-
            idends, if any, will be declared and paid quarterly to sharehold-
            ers of record by the Equity Income, Renaissance, Value and Bal-
            anced Funds. Net investment income from interest and dividends, if
            any, will be declared and paid at least annually to shareholders
            of record by the Growth, Target, Opportunity, Capital Apprecia-
            tion, Mid-Cap Growth, Value 25, Small-Cap Value, Tax-Efficient Eq-
            uity, International, Innovation and Precious Metals Funds. Any net
            capital gains from the sale of portfolio securities     
            will be distributed no less frequently than once annually. Net
            short-term capital gains may be paid more frequently.
               All dividends and/or distributions will be paid in the form of
            additional shares of the class of shares of the Fund to which the
            dividends and/or distributions relate or, at the election of the
            shareholder, of another Fund or other series of the Trust or of
            PIMCO Funds: Pacific Investment Management Series as described be-
            low, at net asset value, unless the shareholder elects to receive
            cash (either paid to shareholders directly or credited to their
            account with their participating broker). If a shareholder has
            elected to receive dividends and/or capital gain distributions in
            cash and the postal or other delivery service is unable to deliver
            checks to the shareholder's address of record, such shareholder's
 
                                                                
                                                             Prospectus  59    
<PAGE>
 

            distributions will automatically be invested in the Money Market
            Fund of PIMCO Funds: Pacific Investment Management Series, until
            such shareholder is located. Dividends paid by each Fund with re-
            spect to each class of shares are calculated in the same manner
            and at the same time, but dividends on Class B and Class C shares
            are expected to be lower than dividends on Class A shares as a re-
            sult of the distribution fee applicable to Class B and Class C
            shares. There are no sales charges on reinvested dividends.
               Class A, Class B and Class C shareholders of the Trust may
            elect to invest dividends and/or distributions paid by any Fund in
            shares of the same class of any other Fund, another series of the
            Trust (such as a PIMCO Funds Asset Allocation Series portfolio),
            or a series of PIMCO Funds: Pacific Investment Management Series
            which offers such class of shares at net asset value. The share-
            holder must have an account existing in the Fund or series se-
            lected for investment with the identical registered name and ad-
            dress and must elect this option on the account application, on a
            form provided for that purpose or by a telephone request to the
            Distributor at 1-800-426-0107. For further information on this op-
            tion, contact your broker or call the Distributor at 1-800-426-
            0107.
 
            Taxes
 
            Each Fund intends to qualify as a regulated investment company an-
            nually and to elect to be treated as a regulated investment com-
            pany under the Internal Revenue Code of 1986, as amended (the
            "Code"). As such, a Fund generally will not pay federal income tax
            on the income and gains it pays as dividends to its shareholders.
            In order to avoid a 4% federal excise tax, each Fund intends to
            distribute each year substantially all of its net income and
            gains.
               
               Shareholders subject to U.S. federal income tax will be subject
            to tax on dividends received from a Fund, regardless of whether
            received in cash or reinvested in additional shares. Distributions
            received by tax-exempt shareholders will not be subject to federal
            income tax to the extent permitted under applicable tax law. All
            shareholders must treat dividends, other than capital gain divi-
            dends, exempt-interest dividends, if any, and dividends that rep-
            resent a return of capital to shareholders, as ordinary income. In
            particular, distributions derived from short-term gains will be
            treated as ordinary income. Dividends designated by a Fund as cap-
            ital gain dividends derived from the Fund's net capital gains
            (that is, the excess of its net long-term capital gains over its
            net short-term capital losses) are taxable to shareholders as
            long-term capital gain (generally subject to a 20% tax rate for
            shareholders who are individuals) except as provided by an appli-
            cable tax exemption. Any distributions that are not from a Fund's
            net investment income or net capital gain generally may be charac-
            terized as a return of capital to shareholders or, in some cases,
            as capital gain. Certain dividends declared in October, November
            or December of a calendar year are taxable to shareholders (who
            otherwise are subject to tax on dividends) as though received on
            December 31 of that year if paid to shareholders during January of
            the following calendar year. Each Fund will advise shareholders
            annually of the amount and nature of the dividends paid to them.
            Dividends, if any, derived from interest on certain U.S. Govern-
            ment securities may be exempt from state and local taxes, although
            interest on mortgage-backed U.S. Government securities may not be
            so exempt. While the Tax-Efficient Equity Fund seeks to minimize
            taxable distributions, the Fund may be expected to earn and dis-
            tribute taxable income and may also be expected to realize and
            distribute capital gains from time to time.     
               Current federal tax law requires the holder of a U.S. Treasury
            or other fixed income zero-coupon security to accrue as income
            each year a portion of the discount at which the security was pur-
            chased, even though the holder receives no interest payment in
            cash on the security during the year. In addition, pay-in-kind se-
            curities will give rise to income which is required to be distrib-
            uted and is taxable even though the Fund holding the security re-
            ceives no interest payment in cash on the security during the
            year. Also, a portion of the yield on certain high yield securi-
            ties (including certain pay-in-kind securities) issued after July
            10, 1989 may be treated as dividends. Accordingly, each Fund that
            holds the foregoing kinds of securities may be required to pay out
            as an income distribution each year an amount which is greater
            than the total amount of cash interest the Fund actually received.
            Such distributions may be made from the cash assets of the Fund or
            by liquidation of portfolio securities, if necessary. The Fund may
            realize gains
 
60  PIMCO Funds: Multi-Manager Series
<PAGE>
 

            or losses from such liquidations. In the event the Fund realizes
            net capital gains from such transactions, its shareholders may re-
            ceive a larger capital gain distribution, if any, than they would
            in the absence of such transactions.
               
               Taxable shareholders should note that the timing of their in-
            vestment or redemptions could have undesirable tax consequences.
            Dividends and distributions on a Fund's shares are generally sub-
            ject to federal income tax as described herein to the extent they
            do not exceed the Fund's realized income and gains, even though
            such dividends and distributions may economically represent a re-
            turn of a particular shareholder's investment. Such distributions
            are likely to occur in respect of shares purchased at a time when
            the Fund's net asset value reflects gains that are either
            unrealized or realized but not distributed. Such realized gains
            may be required to be distributed even when a Fund's net asset
            value also reflects unrealized losses.     
               
               As discussed above under "Characteristics and Risks of Securi-
            ties and Investment Techniques--Investment in Investment Compa-
            nies," each Fund may invest in the securities of other investment
            companies. Investments in other investment companies may increase
            the amount of taxes payable by shareholders of the Funds. For more
            information on the tax consequences of such investments, see "Tax-
            ation" in the Statement of Additional Information.     
               The preceding discussion relates only to federal income tax;
            the consequences under other tax laws may differ. Shareholders
            should consult their tax advisers as to the possible application
            of foreign, state and local income tax laws to Trust dividends and
            capital gain distributions. For additional information relating to
            the tax aspects of investing in a Fund, see the Statement of Addi-
            tional Information.
 
            Management of the Trust
 
            The business affairs of the Trust are managed under the direction
            of the Board of Trustees. Information about the Trustees and the
            Trust's executive officers may be found in the Statement of Addi-
            tional Information under the heading "Management of the Trust."
 
Investment     
Adviser     PIMCO Advisors serves as investment adviser to the Funds pursuant
            to an investment advisory agreement with the Trust. PIMCO Advisors
            is a Delaware limited partnership organized in 1987. PIMCO Advi-
            sors provides investment management and advisory services to pri-
            vate accounts of institutional and individual clients and to mu-
            tual funds. Total assets under management by PIMCO Advisors and
            its subsidiary partnerships as of December 31, 1998 were approxi-
            mately $244.2 billion. The general partners of PIMCO Advisors are
            PIMCO Partners, G.P. and PIMCO Advisors Holdings L.P. ("PAH").
            PIMCO Partners, G.P. is a general partnership between PIMCO Hold-
            ing LLC, a Delaware limited liability company and an indirect
            wholly-owned subsidiary of Pacific Life Insurance Company, and
            PIMCO Partners LLC, a California limited liability company con-
            trolled by the current Managing Directors and two former Managing
            Directors of Pacific Investment Management. PIMCO Partners, G.P.
            is the sole general partner of PAH. PIMCO Advisors is governed by
            a Management Board, which exercises substantially all of the gov-
            ernance powers of the general partner and serves as the functional
            equivalent of a board of directors. PIMCO Advisors' address is 800
            Newport Center Drive, Newport Beach, California 92660. PIMCO Advi-
            sors is registered as an investment adviser with the Securities
            and Exchange Commission. PIMCO Advisors currently has seven sub-
            sidiary investment adviser partnerships, the following six of
            which manage one or more of the Funds: Blairlogie, Cadence, Colum-
            bus Circle, NFJ, Pacific Investment Management and Parametric. On
            or about April 30, 1999, it is anticipated that PIMCO Advisors
            will sell substantially all of its ownership interest in
            Blairlogie. See "Sub-Advisers--Blairlogie" below.     
               Under the investment advisory agreement, PIMCO Advisors, sub-
            ject to the supervision of the Board of Trustees, is responsible
            for providing advice and guidance with respect to the Funds and
            for managing, either directly or through others selected by the
            Adviser, the investment of the Funds. PIMCO Advisors also fur-
            nishes to the Board of Trustees periodic reports on the investment
            performance of each Fund.
 
                                                                
                                                             Prospectus 61    
 
                                       
<PAGE>
 
PIMCO Funds: Multi-Manager Series
               
            Pursuant to portfolio management agreements, PIMCO Advisors em-
            ploys separate firms to serve as Sub-Advisers for the Funds, ex-
Sub-        cept that PIMCO Equity Advisors manages the Growth, Target, Oppor-
Advisers    tunity and Innovation Funds. Each such firm is an affiliate of
            PIMCO Advisors except for Van Eck, which serves as Sub-Adviser for
            the Precious Metals Fund. PIMCO Advisors (and not the Funds or the
            Trust) compensates the Sub-Advisers it retains from its advisory
            fee. Each Sub-Adviser has full investment discretion and makes all
            determinations with respect to the investment of a Fund's assets,
            or, for the Balanced Fund, with respect to the portion of the
            Fund's assets allocated to the Sub-Adviser for investment, and
            makes all determinations respecting the purchase and sale of a
            Fund's securities and other investments. If a separate firm ceases
            to serve as Sub-Adviser for a Fund, PIMCO Advisors will either as-
            sume full responsibility for the management of that Fund, or re-
            tain a new sub-adviser subject to the approval of the Trustees
            and, if required, the Fund's shareholders.     
               
            PIMCO Equity Advisors manages the Growth, Target, Opportunity and
            Innovation Funds. PIMCO Equity Advisors is a division of PIMCO Ad-
            visors and provides investment management and advisory services
            primarily to equity-oriented mutual funds and other institutional
            clients. Information about PIMCO Advisors is provided above under
            "Investment Adviser." Prior to March 5, 1999, Columbus Circle
            served as Sub-Adviser for the Growth, Target, Opportunity and In-
            novation Funds.     
               
               PIMCO Equity Advisors specializes in fundamental research that
            identifies characteristics of wealth creating businesses. The pri-
            mary investment style is quality growth within various market cap-
            italization ranges--small-cap, mid-cap and large-cap. PIMCO Equity
            Advisors seeks to identify quality growth companies using proprie-
            tary research and the execution of a disciplined investment proc-
            ess.     
                      
               Kenneth W. Corba, a Managing Director and Chief Investment Of-
            ficer of PIMCO Equity Advisors, is primarily responsible for the
            day-to-day portfolio management of the Growth and Target Funds.
            Mr. Corba has 14 years' investment management experience. Mr.
            Corba was most recently Chief Investment Officer of Eagle Asset
            Management, and prior to that he was a principal and a Senior Vice
            President at Stein Roe and Farnham Inc. Mr. Corba received his
            bachelor's degree and MBA from the University of Michigan. He is a
            Chartered Financial Analyst. Michael F. Gaffney, a Managing Direc-
            tor of PIMCO Equity Advisors, is primarily responsible for the
            day-to-day portfolio management of the Opportunity Fund. He has 11
            years' investment management experience. Mr. Gaffney previously
            served as a Senior Vice President of Alliance Capital Management
            L.P. He received his bachelor's degree from St. John's University
            and his MBA from New York University. Dennis P. McKechnie, a Port-
            folio Manager at PIMCO Equity Advisors, has primary responsibility
            for the day-to-day portfolio management of the Innovation Fund. He
            previously shared responsibility for the Fund as a Portfolio Man-
            ager at Columbus Circle. Mr. McKechnie has 8 years' investment
            management experience. He received his bachelor's degree from Pur-
            due University and his MBA from Columbia University. As discussed
            below under "Columbus Circle," John K. Schneider is expected to
            assume primary responsibility for the day-to-day portfolio manage-
            ment of the Renaissance Fund on or about May 7, 1999. Mr. Schnei-
            der previously served as a partner and Portfolio Manager of
            Schneider Capital Management. He has 13 years' investment manage-
            ment experience. He graduated from Lehigh University and is a
            Chartered Financial Analyst.     
               
            Columbus Circle manages the Renaissance Fund.* Columbus Circle is
            an investment management firm organized as a general partnership.
            Columbus Circle has two partners: PIMCO Advisors as the supervi-
            sory partner, and Columbus Circle Investors Management Inc. as the
            managing partner. The predecessors of Columbus Circle, including
            the Columbus Circle Investors Division of Thomson Advisory Group
            L.P. ("TAG"), commenced operations in 1975. Accounts managed by
            Columbus Circle had combined assets as of December 31, 1998 of ap-
            proximately $9.6 billion. Columbus Circle's address is Metro Cen-
            ter, One Station Place, 8th Floor, Stamford, Connecticut 06902.
            Columbus Circle is registered as an investment adviser with the
            Securities and Exchange Commission.     
                   
            ------
               
            *On or about May 7, 1999, PIMCO Equity Advisors will assume full
            portfolio management responsibility for the Renaissance Fund under
            the terms of the Trust's investment advisory agreement with PIMCO
            Advisors. John K. Schneider is expected to assume responsibility
            for the day-to-day management of the Fund. Information about PIMCO
            Equity Advisors and Mr. Schneider is provided above under "PIMCO
            Equity Advisors."     
 
                                       62
<PAGE>
 
               
               At the center of Columbus Circle's equity investment strategy
            is its theory of Positive Momentum & Positive Surprise. This the-
            ory asserts that a good company doing better than generally ex-
            pected will experience a rise in its stock price, and conversely,
            a company falling short of expectations will experience a drop in
            its stock price. Based on this theory, Columbus Circle attempts to
            manage the Renaissance Fund with a view to investing in growing
            companies that are surprising the market with business results
            that are better than anticipated.     
               
               Investment decisions made by Columbus Circle are generally made
            by one or more committees, although Clifford G. Fox has primary
            responsibility for the day-to-day management of the Renaissance
            Fund. Mr. Fox, a Managing Director of Columbus Circle, has 17
            years' investment management experience. He received his bache-
            lor's degree from the University of Pennsylvania and his MBA from
            New York University, and he is a Chartered Financial Analyst.     
                      
            Cadence manages the Capital Appreciation and Mid-Cap Growth Funds,
            as well as a portion of the Common Stock Segment of the Balanced
            Fund (the "Cadence Funds"). Cadence is an investment management
            firm organized as a general partnership. Cadence has two partners:
            PIMCO Advisors as the supervisory partner, and Cadence Capital
            Management Inc. as the managing partner. Cadence Capital Manage-
            ment Corporation, the predecessor investment adviser to Cadence,
            commenced operations in 1988. Accounts managed by Cadence had com-
            bined assets as of December 31, 1998 of approximately $7.4 bil-
            lion. Cadence's address is Exchange Place, 53 State Street, Bos-
            ton, Massachusetts 02109. Cadence is registered as an investment
            adviser with the Securities and Exchange Commission.     
               David B. Breed, William B. Bannick, Katherine A. Burdon and Pe-
            ter B. McManus are primarily responsible for the day-to-day man-
            agement of the Cadence Funds. Mr. Breed is a Managing Director,
            the Chief Executive Officer, and a founding partner of Cadence,
            and has 25 years' investment management experience. He has been
            the driving force in developing the firm's growth-oriented stock
            screening and selection process and has been with Cadence or its
            predecessor since its inception. Mr. Breed graduated from the Uni-
            versity of Massachusetts and received his MBA from the Wharton
            School of Business. He is a Chartered Financial Analyst. Mr.
            Bannick is a Managing Director and Executive Vice President of Ca-
            dence and has 13 years' investment management experience. He pre-
            viously served as Executive Vice President of George D. Bjurman &
            Associates and as Supervising Portfolio Manager of Trinity Invest-
            ment Management Corporation. Mr. Bannick joined the predecessor of
            Cadence in 1992. He graduated from the University of Massachusetts
            and received his MBA from Boston University. Mr. Bannick is
            a Chartered Financial Analyst. Ms. Burdon is a Managing Director
            and Portfolio Manager of Cadence and has 10 years' investment man-
            agement experience. She previously served as a Vice President and
            Portfolio Manager of The Boston Company. Ms. Burdon joined the
            predecessor of Cadence in 1993. She graduated from Stanford Uni-
            versity and received a Master of Science degree from Northeastern
            University. Ms. Burdon is a Chartered Financial Analyst and Certi-
            fied Public Accountant. Mr. McManus is Director of Fund Management
            of Cadence and has 21 years' investment management experience. He
            previously served as a Vice President of Bank of Boston. Mr. Mc-
            Manus joined Cadence in 1994. He graduated from the University of
            Massachusetts, and he is certified as a Financial Planner.
               
            NFJ manages the Equity Income, Value, Value 25 and Small-Cap Value
            Funds, as well as a portion of the Common Stock Segment of the
            Balanced Fund. NFJ is an investment management firm organized as a
            general partnership. NFJ has two partners: PIMCO Advisors as the
            supervisory partner, and NFJ Management Inc. as the managing part-
            ner. NFJ Investment Group, Inc., the predecessor investment ad-
            viser to NFJ, commenced operations in 1989. Accounts managed by
            NFJ had combined assets as of December 31, 1998 of approximately
            $2.4 billion. NFJ's address is 2121 San Jacinto, Suite 1840, Dal-
            las, Texas 75201. NFJ is registered as an investment adviser with
            the Securities and Exchange Commission.     
               Chris Najork and Benjamin Fischer are responsible for the day-
            to-day management of the Equity Income Fund and the portion of the
            Common Stock Segment of the Balanced Fund allocated to NFJ. Mr.
            Najork is a Managing Director and a founding partner of NFJ and
            has 30 years' experience encompassing equity research and portfo-
            lio management. He received his bachelor's degree and MBA from
            Southern Methodist University, and he is a Chartered
 
                                                                
                                                             Prospectus  63    
<PAGE>
 

            Financial Analyst. Mr. Fischer is a Managing Director and a found-
            ing partner of NFJ and has 32 years' experience encompassing eq-
            uity research and portfolio management. He received his bachelor's
            degree from Oklahoma University and his MBA from the New York Uni-
            versity Graduate School of Business. He is a Chartered Financial
            Analyst. Messrs. Najork, Fischer and Paul A. Magnuson are primar-
            ily responsible for the day-to-day management of the Value Fund
            and the Small-Cap Value Fund. Mr. Magnuson, a research analyst at
            NFJ, has 13 years' experience in equity research and portfolio
            management. He received his bachelor's degree in Finance from the
            University of Nebraska-Lincoln. Messrs. Najork, Fischer and Cliff
            Hoover are primarily responsible for the day-to-day management of
            the Value 25 Fund. Mr. Hoover is a principal at NFJ and has 24
            years' experience in portfolio management and banking. He received
            his bachelor's degree and MBA from Texas Tech University. He is a
            Chartered Financial Analyst.
               
            Blairlogie manages the International Fund. Blairlogie is an in-
            vestment management firm, organized as a limited partnership under
            the laws of the United Kingdom, with two general partners and one
            limited partner. The general partners are PIMCO Advisors, which
            serves as the supervisory partner, and Blairlogie Holdings Limit-
            ed, a wholly owned subsidiary of PIMCO Advisors, which serves as
            the managing partner. The limited partner is Blairlogie Partners
            L.P., a limited partnership, the general partner of which is Pa-
            cific Asset Management LLC (a subsidiary of Pacific Life Insurance
            Company), and the limited partners of which are the principal ex-
            ecutive officers of Blairlogie Capital Management. Blairlogie Cap-
            ital Management Ltd., the predecessor investment adviser to
            Blairlogie, commenced operations in 1992. Accounts managed by
            Blairlogie had combined assets as of December 31, 1998 of approxi-
            mately $900 million. Blairlogie's address is 4th Floor, 125
            Princes Street, Edinburgh EH2 4AD, Scotland. Blairlogie is regis-
            tered as an investment adviser with the Securities and Exchange
            Commission in the United States and with the Investment Management
            Regulatory Organisation in the United Kingdom.     
               James Smith is primarily responsible for the day-to-day manage-
            ment of the International Fund. Mr. Smith is a Managing Director
            and the Chief Investment Officer of Blairlogie and is responsible
            for managing an investment team of six professionals who, in turn,
            specialize in selection of stocks within Europe, Asia, and the
            Americas, and in currency and derivatives. He previously served as
            a Senior Portfolio Manager at Murray Johnstone in Glasgow,
            Scotland, responsible for international investment management for
            North American clients, and at Schroder Investment Management in
            London. Mr. Smith received his bachelor's degree in Economics from
            London University and his MBA from Edinburgh University. He is an
            Associate of the Institute of Investment Management and Research.
               
               It is anticipated that PIMCO Advisors will sell substantially
            all of its ownership interest in Blairlogie to subsidiaries of Al-
            leghany Asset Management, Inc. on or about April 30, 1999 (the
            "Blairlogie Transaction"). The Blairlogie Transaction is subject
            to a number of conditions. PIMCO Advisors has determined to con-
            tinue to retain Blairlogie as Sub-Adviser of the Fund subsequent
            to the Blairlogie Transaction pursuant to a new portfolio manage-
            ment agreement between PIMCO Advisors and Blairlogie. This Pro-
            spectus will be supplemented or revised if these events do not oc-
            cur substantially in accordance with the schedule outlined above.
                   
            Pacific Investment Management manages the Fixed Income Securities
            Segment of the Balanced Fund. Pacific Investment Management is an
            investment management firm organized as a general partnership. Pa-
            cific Investment Management has two partners: PIMCO Advisors as
            the supervisory partner, and PIMCO Management, Inc. as the manag-
            ing partner. Pacific Investment Management Company, the predeces-
            sor investment adviser to Pacific Investment Management, commenced
            operations in 1971. Pacific Investment Management had approxi-
            mately $158 billion of assets under management as of December 31,
            1998. Pacific Investment Management's address is 840 Newport Cen-
            ter Drive, Suite 300, Newport Beach, California 92660. Pacific In-
            vestment Management is registered as an investment adviser with
            the Securities and Exchange Commission and as a commodity trading
            adviser with the CFTC.     
               William H. Gross is responsible for the day-to-day management
            of the Fixed Income Securities Segment of the Balanced Fund. Mr.
            Gross is a founder and a Managing Director of Pacific Investment
            Management and has been associated with Pacific Investment Manage-
            ment or its predecessor for more than 28 years. He has extensive
            investment experience in both credit research and fixed income
            portfolio management. He received his bachelor's degree
 
64  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            from Duke University and his MBA from UCLA Graduate School of
            Business. Mr. Gross is a Chartered Financial Analyst and a member
            of The Los Angeles Society of Financial Analysts.
               
            Parametric manages the Tax-Efficient Equity Fund. Parametric is an
            investment management firm organized as a general partnership.
            Parametric has two partners: PIMCO Advisors as the supervisory
            partner, and Parametric Management Inc. as the managing partner.
            Parametric Portfolio Associates, Inc., the predecessor investment
            adviser to Parametric, commenced operations in 1987. Accounts man-
            aged by Parametric had combined assets as of December 31, 1998 of
            approximately $3.4 billion. Parametric's address is 7310 Columbia
            Center, 701 Fifth Avenue, Seattle, Washington 98104-7090. Paramet-
            ric is registered as an investment adviser with the Securities and
            Exchange Commission and as a commodity trading adviser with the
            CFTC.     
               
               David Stein, Tom Seto and Cliff Quisenberry are primarily re-
            sponsible for the day-to-day management of the Tax-Efficient Eq-
            uity Fund. Mr. Stein is a Managing Director of Parametric and has
            been associated with Parametric since June of 1996. He also di-
            rects research and product development for Parametric. Mr. Stein
            graduated with bachelor's and master's degrees in Applied Mathe-
            matics from the University of Witwatersrand, South Africa, and re-
            ceived a Ph.D. in Applied Mathematics from Harvard University.
            Prior to joining Parametric, Mr. Stein served as the Director of
            Investment Research at GTE Investment Management, Director of Ac-
            tive Equity Strategies at the Vanguard Group, and Director of
            Quantitative Portfolio Management and Research at IBM. Mr. Seto is
            a Vice President of Parametric and has 7 years of experience in
            managing structured equity portfolios. Prior to joining Paramet-
            ric, he served as the Head of U.S. Equity Index Investments at
            Barclays Global Investors. Mr. Seto graduated from the University
            of Washington with a bachelor's degree in Electrical Engineering,
            and from the University of Chicago with an MBA in Finance. Mr.
            Quisenberry, a Vice President of Parametric, has 9 years' experi-
            ence as a Portfolio Manager and has been with Parametric since
            1994. He previously served as a Vice President and Portfolio Man-
            ager at Cutler & Co., and as a Security Analyst and Portfolio Man-
            ager at Fred Alger Management. Mr. Quisenberry graduated from Yale
            University with a bachelor's degree in Economics. He is a Chart-
            ered Financial Analyst.     
               
            Van Eck is an unaffiliated investment adviser that manages the
            Precious Metals Fund. Van Eck is a Delaware corporation which, to-
            gether with its affiliates, provides investment advisory services
            to other mutual funds and to private accounts. Van Eck is con-
            trolled by John C. van Eck who, along with members of his immedi-
            ate family, owns 100% of the stock of Van Eck. Accounts managed by
            Van Eck had combined assets as of December 31, 1998 of approxi-
            mately $1.1 billion. Van Eck's address is 99 Park Avenue, New
            York, NY 10001. Van Eck is registered as an investment adviser
            with the Securities and Exchange Commission.     
               Henry J. Bingham, Executive Managing Director of Van Eck, has
            served as the portfolio manager responsible for the day-to-day
            management of the Precious Metals Fund since the Fund commenced
            operations.
 
            Registration as an investment adviser with the Securities and Ex-
            change Commission does not involve supervision by the Securities
            and Exchange Commission over investment advice, and registration
            with the CFTC as a commodity trading adviser does not involve su-
            pervision by the CFTC over commodities trading. The portfolio man-
            agement agreements are not exclusive, and Columbus Circle, Ca-
            dence, NFJ, Blairlogie, Pacific Investment Management, Parametric
            and Van Eck may provide, and currently are providing, investment
            management services to other clients, including other investment
            companies.
 
Fund
Administrator
            PIMCO Advisors also serves as administrator (the "Administrator")
            for the Funds' Class A, Class B and Class C shares pursuant to an
            administration agreement with the Trust. The Administrator pro-
            vides or procures administrative services for Class A, Class B and
            Class C shareholders of the Funds, which include clerical help and
            accounting, bookkeeping, internal audit services and certain other
            services required by the Funds, and preparation of reports to the
            Funds' shareholders and regulatory filings. The Administrator has
            retained Pacific Investment Management to provide such services as
            sub-administrator. The Administrator and/or the sub-administrator
            may also retain other affiliates to
 
                                                                
                                                             Prospectus  65    
<PAGE>
 

            provide certain of these services. In addition, the Administrator,
            at its own expense, arranges for the provision of legal, audit,
            custody, transfer agency (including sub-transfer agency and other
            administrative services) and other services necessary for the or-
            dinary operation of the Funds, and is responsible for the costs of
            registration of the Trust's shares and the printing of prospec-
            tuses and shareholder reports for current shareholders.
               
               The Funds (and not the Administrator) are responsible for the
            following expenses: (i) salaries and other compensation of any of
            the Trust's executive officers and employees who are not officers,
            directors, stockholders, or employees of PIMCO Advisors, Pacific
            Investment Management, or their subsidiaries or affiliates; (ii)
            taxes and governmental fees; (iii) brokerage fees and commissions
            and other portfolio transaction expenses; (iv) the costs of bor-
            rowing money, including interest expenses; (v) fees and expenses
            of the Trustees who are not "interested persons" of the Adviser,
            any Sub-Adviser or the Trust, and any counsel retained exclusively
            for their benefit; (vi) extraordinary expenses, including costs of
            litigation and indemnification expenses; (vii) expenses which are
            capitalized in accordance with generally accepted accounting prin-
            ciples; and (viii) any expenses allocated or allocable to a spe-
            cific class of shares, which include distribution and/or service
            fees payable with respect to Class A, Class B and Class C shares,
            and may include certain other expenses as permitted by the Trust's
            Multiple Class Plan adopted pursuant to Rule 18f-3 under the 1940
            Act, subject to review and approval by the Trustees.     
 
            The Funds feature fixed advisory and administrative fees. For pro-
            viding or arranging for the provision of investment advisory serv-
            ices to the Funds as described above, PIMCO Advisors receives
            monthly fees from each Fund at an annual rate based on the average
            daily net assets of the Fund as follows:
Advisory
and
Administrative
Fees
 
 
<TABLE>   
<CAPTION>
                                    Advisory
           Fund                     Fee Rate
              ------------------------------
           <S>                      <C>
           Capital Appreciation,
            Mid-Cap Growth, Equity
            Income, Value, Tax-
            Efficient Equity and
            Balanced Funds          .45%
              ------------------------------
           Growth and Value 25
            Funds                   .50%
              ------------------------------
           Target and Interna-
            tional Funds            .55%
              ------------------------------
           Renaissance, Small-Cap
            Value and Precious
            Metals Funds            .60%
              ------------------------------
           Opportunity and Innova-
            tion Funds              .65%
</TABLE>    
 
 
               For providing or procuring administrative services to the Funds
            as described above, the Administrator receives monthly fees from
            each Fund at an annual rate based on the average daily net assets
            attributable in the aggregate to the Fund's Class A, Class B and
            Class C shares as follows:
 
 
<TABLE>
<CAPTION>
                                 Administrative
           Fund                  Fee Rate
              ------------------------------------------------------------
           <S>                   <C>
           Precious Metals Fund  .45% of first $2.5 billion
                                 .40% of amounts in excess of $2.5 billion
              ------------------------------------------------------------
           International Fund    .65% of first $2.5 billion
                                 .60% of amounts in excess of $2.5 billion
              ------------------------------------------------------------
           All Other Funds       .40% of first $2.5 billion
                                 .35% of amounts in excess of $2.5 billion
</TABLE>
               
               The investment advisory, administration and sub-administration
            agreements for the Funds may be terminated by the Trustees, or by
            PIMCO Advisors or Pacific Investment Management (as the case may
            be) on 60 days' written notice. In addition, these agreements may
            be terminated with regard to the Growth, Target, Opportunity,
            Renais     -
 
66  PIMCO Funds: Multi-Manager Series
<PAGE>
 
               
            sance, International, Innovation and Precious Metals Funds by a
            majority of the Trustees that are not interested persons of the
            Trust, PIMCO Advisors, or Pacific Investment Management (as the
            case may be) on 60 days' written notice. Following their initial
            terms, the agreements will continue from year-to-year if approved
            by the Trustees.     
               
               Pursuant to the portfolio management agreements between the Ad-
            viser and the Sub-Advisers listed below, PIMCO Advisors (and not
            the Funds or the Trust) pays each Sub-Adviser a fee based on a
            percentage of the average daily net assets of the noted Funds as
            follows: Columbus Circle--.38% for the Renaissance Fund; Cadence--
            .35% for the Capital Appreciation Fund, .35% for the Mid-Cap
            Growth Fund and .35% for the portion of the Common Stock Segment
            of the Balanced Fund allocated to Cadence; NFJ--.35% for the Eq-
            uity Income Fund, .35% for the Value Fund, .40% for the Value 25
            Fund, .50% for the Small-Cap Value Fund and .35% for the portion
            of the Common Stock Segment of the Balanced Fund allocated to NFJ;
            Blairlogie--.40% for the International Fund; Pacific Investment
            Management-- .25% for the Fixed Income Securities Segment of the
            Balanced Fund; Parametric--.35% for the Tax-Efficient Equity Fund;
            and Van Eck--.35% for the Precious Metals Fund. PIMCO Advisors
            does not retain a separate firm to serve as Sub-Adviser for the
            Growth, Target, Opportunity and Innovation Funds, and retains all
            of the advisory fees it earns from those Funds.     
 
Portfolio      
TransactionsThe Adviser or, pursuant to the portfolio management agreements, a
            Sub-Adviser places orders for the purchase and sale of portfolio
            investments for a Fund's accounts with brokers or dealers selected
            by it in its discretion. In effecting purchases and sales of port-
            folio securities for the accounts of the Funds, the Adviser and
            the Sub-Advisers will seek the best price and execution of the
            Fund's orders. In doing so, a Fund may pay higher commission rates
            than the lowest available when the Adviser or Sub-Adviser believes
            it is reasonable to do so in light of the value of the brokerage
            and research services provided by the broker effecting the trans-
            action. The Adviser and Sub-Advisers also may consider sales of
            shares of the Trust as a factor in the selection of broker-dealers
            to execute portfolio transactions for the Trust.     
               
               Some securities considered for investment by the Funds may also
            be appropriate for other clients served by the Adviser or the Sub-
            Advisers. If a purchase or sale of securities consistent with the
            investment policies of a Fund and one or more of these clients is
            considered at or about the same time, transactions in such securi-
            ties will be allocated among the Fund and clients in a manner
            deemed fair and reasonable by the Adviser or Sub-Adviser. Particu-
            larly when investing in less liquid or illiquid securities of
            smaller capitalization companies, such allocation may take into
            account the asset size of a Fund in determining whether the allo-
            cation of an investment is suitable. As a result, larger Funds may
            become more concentrated in more liquid securities than smaller
            Funds or private accounts of the Adviser or a Sub-Adviser pursuing
            a small capitalization investment strategy, which could adversely
            affect performance. The Adviser or a Sub-Adviser may aggregate or-
            ders for the Funds with simultaneous transactions entered into on
            behalf of its other clients so long as price and transaction ex-
            pense are averaged either for the particular transaction or for
            that day.     
 
            Description of the Trust
 
Capitalization
            The Trust was organized as a Massachusetts business trust on Au-
            gust 24, 1990, and currently consists of twenty-eight portfolios
            that are operational, fifteen of which are described in this Pro-
            spectus. Other portfolios may be offered by means of a separate
            prospectus. The Board of Trustees may establish additional portfo-
            lios in the future. The capitalization of the Trust consists of an
            unlimited number of shares of beneficial interest. When issued,
            shares of the Trust are fully paid, non-assessable and freely
            transferable.
               Under Massachusetts law, shareholders could, under certain cir-
            cumstances, be held liable for the obligations of the Trust. How-
            ever, the Second Amended and Restated Agreement and Declaration of
            Trust (the "Declaration of Trust") of the Trust disclaims share-
            holder liability for acts or obligations of the Trust and requires
            that notice of such disclaimer be given in each agreement, obliga-
            tion or instrument entered into or executed by the Trust or the
            Trustees.
 

                                                                
                                                             Prospectus  67    

<PAGE>
 

            The Declaration of Trust also provides for indemnification out of
            a Fund's property for all loss and expense of any shareholder of
            that Fund held liable on account of being or having been a share-
            holder. Thus, the risk of a shareholder incurring financial loss
            on account of shareholder liability is limited to circumstances in
            which such disclaimer is inoperative or the Fund of which he or
            she is or was a shareholder is unable to meet its obligations, and
            thus should be considered remote.
 
Multiple    In addition to Class A, Class B and Class C shares, certain Funds
Classesof   also offer Class D, Institutional Class and Administrative Class
Shares      shares through separate prospectuses. See "Alternative Purchase
            Arrangements." These other classes of shares of the Funds may have
            different sales charges and expense levels, which will affect per-
            formance accordingly. This Prospectus relates only to Class A,
            Class B and Class C shares of the Funds.
               Class A, Class B and Class C shares of each Fund represent in-
            terests in the assets of that Fund, and each class has identical
            dividend, liquidation and other rights and the same terms and con-
            ditions, except that expenses related to the distribution and
            shareholder servicing of Class A, Class B and Class C shares are
            borne solely by such class and each class may, at the Trustees'
            discretion, also pay a different share of other expenses, not in-
            cluding advisory or custodial fees or other expenses related to
            the management of the Trust's assets, if these expenses are actu-
            ally incurred in a different amount by that class, or if the class
            receives services of a different kind or to a different degree
            than the other classes. All other expenses are allocated to each
            class on the basis of the net asset value of that class in rela-
            tion to the net asset value of the particular Fund.
 
Voting
            Each class of shares of each Fund has identical voting rights, ex-
            cept that each class of shares has exclusive voting rights on any
            matter submitted to shareholders that relates solely to that
            class, and has separate voting rights on any matter submitted to
            shareholders in which the interests of one class differ from the
            interests of any other class. Each class of shares has exclusive
            voting rights with respect to matters pertaining to any Distribu-
            tion and Servicing Plan or agreement applicable only to that
            class. These shares are entitled to vote at meetings of sharehold-
            ers. Matters submitted to shareholder vote must be approved by
            each Fund separately except (i) when required by the 1940 Act
            shares shall be voted together and (ii) when the Trustees have de-
            termined that the matter does not affect all Funds, then only
            shareholders of the Fund or Funds affected shall be entitled to
            vote on the matter. All classes of shares of a Fund will vote to-
            gether, except with respect to a Distribution and Servicing Plan
            or agreement applicable to a class of shares or when a class vote
            is required as specified above or otherwise by the 1940 Act.
            Shares are freely transferable, are entitled to dividends as de-
            clared by the Trustees and, in liquidation of the Trust, are enti-
            tled to receive the net assets of their Fund, but not of the other
            Funds. The Trust does not generally hold annual meetings of share-
            holders and will do so only when required by law. Shareholders may
            remove Trustees from office by votes cast in person or by proxy at
            a meeting of shareholders or by written consent. Such a meeting
            will be called at the written request of the holders of 10% of the
            Trust's outstanding shares.
               
               Shares entitle their holders to one vote per share (with pro-
            portionate voting for fractional shares). As of March 10, 1999,
            the Trust believes that there were no shareholders of record of
            25% or more of the outstanding voting securities of any Fund. As
            used in this Prospectus, the phrase "vote of a majority of the
            outstanding shares" of a Fund (or the Trust) means the vote of the
            lesser of: (1) 67% of the shares of the Fund (or the Trust) pres-
            ent at a meeting, if the holders of more than 50% of the outstand-
            ing shares are present in person or by proxy; or (2) more than 50%
            of the outstanding shares of the Fund (or the Trust).     
 
 
68  PIMCO Funds: Multi-Manager Series
<PAGE>
 
            Mailings to Shareholders
 
            To reduce the volume of mail shareholders receive, it is antici-
            pated that only one copy of most Trust reports, such as the
            Trust's annual reports, will be mailed to a shareholder's house-
            hold (same surname, same address). A shareholder may call 1-800-
            426-0107 if additional shareholder reports are desired.
 

                                                                
                                                             Prospectus  69    

<PAGE>
 
PIMCO Funds: 
Multi-Manager 
Series

- --------------------------------------------------------------------------------
INVESTMENT ADVISER AND ADMINISTRATOR
PIMCO Advisors L.P., 800 Newport Center Drive, Newport Beach, CA 92660

- --------------------------------------------------------------------------------
PORTFOLIO MANAGERS
Columbus Circle Investors, Cadence Capital Management, NFJ Investment Group, 
Blairlogie Capital Management, Pacific Investment Management Company, 
Parametric Portfolio Associates, Van Eck Associates Corporation

- --------------------------------------------------------------------------------
DISTRIBUTOR     
PIMCO Funds Distributors LLC, 2187 Atlantic Street, Stamford, CT 06902

- --------------------------------------------------------------------------------
CUSTODIAN
Investors Fiduciary Trust Company, 801 Pennsylvania, Kansas City, MO 64105

- --------------------------------------------------------------------------------
SHAREHOLDER SERVICING AGENT AND TRANSFER AGENT
Shareholder Services, Inc., P.O. Box 5866, Denver, CO 80217

- --------------------------------------------------------------------------------
INDEPENDENT ACCOUNTANTS
PricewaterhouseCoopers LLP, 1055 Broadway, Kansas City, MO 64105

- --------------------------------------------------------------------------------
LEGAL COUNSEL
Ropes & Gray, One International Place, Boston, MA 02110 

- --------------------------------------------------------------------------------
For further information about the PIMCO Funds, call 1-800-426-0107 or visit our
Web site at www.pimcofunds.com.

                                                                     P I M C O 
                                                                     ---------
                                                                         FUNDS
<PAGE>
 
                           PIMCO Funds is on the Web
                     w w w . p i m c o f u n d s . c o m 

A Partial List of What's Available:

Daily Manager Commentary

Fund Manager Bios

Current and Historical Fund Performance

Lipper Rankings

Morningstar Ratings

Listing of Fund Porfolio Holdings

Risk Analysis

Daily Share Prices

Downloadable Literature Section

On-line Literature Requests

Resources for Investment Professionals

PIMCO Funds Distributors LLC is pleased to announce the launch of its Web site.
You and your financial advisor now have around-the-clock access to the most
timely and comprehensive information available on all of the PIMCO Funds. In
addition, the site includes daily commentary from our fund managers, with
insights on the economy and other factors affecting the stock and bond markets.

                            [GRAPHIC APPEARS HERE]

You'll find the site to be informative and easy-to-use. It's divided into three
main sections: Investment Insight, Fund Information and Resources. And there are
several functions that can help you navigate your way around the site. We can be
found on the Worldwide Web at www.pimcofunds.com.

                            [GRAPHIC APPEARS HERE]
        

Investment Insight

The Investment Insight section provides an overview of six of the investment
management firms under the PIMCO Advisors L.P. umbrella. You'll find an
explanation of each firm's investment process, biographies of the investment
team, manager updates and more. 

                            [GRAPHIC APPEARS HERE]
Fund Information 

In the Fund Information section you'll access detailed profiles of all the PIMCO
Funds, including current and historical performance, Lipper rankings and
Morningstar ratings. Additionally, we provide a summary of a fund's portfolio'
complete with risk analysis data. You can also obtain daily fund share prices.
Please read the relevant prospectus carefully before you invest in any PIMCO
Fund.
        
                            [GRAPHIC APPEARS HERE]

Resources

Our Resources section features a variety of useful information, including: 

 . an on-line document library with applications and forms that you can view and
print

 . a literature-by-mail "catalog," so you can order free materials

 . information about our convenient shareholder services, such as Auto-Invest,
Fund Link and our 24-Hour Telephone Information System

 . a listing of the features and benefits of the retirement plans offered by
PIMCO Funds

 . a feature--"My Portfolio"--which enables you to track your portfolio
(including PIMCO Funds, other funds, stocks, futures and options), get detailed
stock quotes and more.

Questions?

We're sure you'll find the PIMCO Funds Web site to be an invaluable tool. If you
have any questions about the site, call us at 1-800-426-0107. Or, use the e-mail
feature of the site to contact us.

                                                                     P I M C O 
                                                                     ---------
                                                                         FUNDS
<PAGE>
 
                       PIMCO FUNDS: MULTI-MANAGER SERIES
                         
                      Supplement Dated April 1, 1999     
                                    to the
                        Prospectus for Class A, Class B
                     
                  and Class C Shares Dated April 1, 1999     
 
                            Disclosure relating to
                    PIMCO International Developed Fund and
                          PIMCO Emerging Markets Fund
    
 This document supplements the PIMCO Funds: Multi-Manager Series (the
 "Trust") Prospectus for Class A, Class B and Class C Shares dated April 1,
 1999 (the "Retail Prospectus").     
   
  In addition to the diversified investment portfolios described in the Retail
Prospectus, the Trust also offers Class A and Class C shares of PIMCO
International Developed Fund and PIMCO Emerging Markets Fund (the "Funds").
Existing Class A and Class C shareholders of the Funds and participants in
certain qualified benefits plans that own Class A or Class C shares of the
Funds as of April 1, 1999 may purchase additional shares. Otherwise, shares of
the Funds are not available for investment or exchanges. See "Purchase,
Redemption and Exchange Information" below.     
 
1. Schedule of Fees (applicable to both Funds).
 
Shareholder Transaction Expenses:
 
<TABLE>
<CAPTION>
                                                               Class A Class C
                                                               Shares  Shares
                                                               ------- -------
<S>                                                            <C>     <C>
Maximum initial sales charge imposed on purchases (as a
 percentage of offering price at time of purchase)............  5.50%   None
Maximum sales charge imposed on reinvested dividends (as a
 percentage of offering price at time of purchase)............   None   None
Maximum contingent deferred sales charge ("CDSC") (as a
 percentage of original purchase price) ......................   1%(1)  1%(2)
Exchange Fee..................................................   None   None
</TABLE>
- --------
1. Imposed only in certain circumstances where Class A shares are purchased
   without a front-end sales charge at the time of purchase. See "Alternative
   Purchase Arrangements" in the Retail Prospectus.
2. The CDSC on Class C shares is imposed only on shares redeemed in the first
   year.
<PAGE>
 
<TABLE>
<CAPTION>
Class A Shares                                                        Example: You would pay       
                                                                      the following expenses        Example: You would pay
                                                                      on a $1,000 investment        the following expenses
                         Annual Fund                                  assuming (1) 5% annual        on a $1,000 investment
                         Operating Expenses                           return and (2)                assuming (1) 5% annual
                         (As a percentage of average net              redemption at the end         return and (2) no
                         assets):                                     of each time period:          redemption:
- -------------------------------------------------------------------   --------------------------------------------------------------
                                                   Total
                                  Admini-          Fund
                         Advisory strative 12b-1   Operating           1    3     5     10    1    3     5     10
Fund                     Fees     Fees(1)  Fees(2) Expenses            Year Years Years Years Year Years Years Years
- -------------------------------------------------------------------   --------------------------------------------------------------
<S>                      <C>      <C>      <C>     <C>                <C>  <C>   <C>   <C>   <C>  <C>   <C>   <C>
International Developed    .60%     .65%     .25%    1.50%            $69  $100  $132  $224  $69  $100  $132  $224
Emerging Markets           .85      .65      .25     1.75              72   107   145   250   72   107   145   250
</TABLE>
 
<TABLE>
<CAPTION>
Class C Shares                                                        Example: You would pay       
                                                                      the following expenses        Example: You would pay
                                                                      on a $1,000 investment        the following expenses
                         Annual Fund                                  assuming (1) 5% annual        on a $1,000 investment
                         Operating Expenses                           return and (2)                assuming (1) 5% annual
                         (As a percentage of average net              redemption at the end         return and (2) no
                         assets):                                     of each time period:          redemption:
- -------------------------------------------------------------------   --------------------------------------------------------------
                                                   Total
                                  Admini-          Fund
                         Advisory strative 12b-1   Operating          1    3     5     10    1    3     5     10
Fund                     Fees     Fees(1)  Fees(2) Expenses           Year Years Years Years Year Years Years Years
- -------------------------------------------------------------------   --------------------------------------------------------------
<S>                      <C>      <C>      <C>     <C>                <C>  <C>   <C>   <C>   <C>  <C>   <C>   <C>
International Developed    .60%     .65%    1.00%    2.25%            $33   $70  $120  $258  $23   $70  $120  $258
Emerging Markets           .85      .65     1.00     2.50              35    78   133   284   25    78   133   284
</TABLE>
- --------
(1) The Administrative Fees for each Fund are subject to reduction to the
    extent that the average net assets attributable in the aggregate to the
    Fund's Class A, Class B and Class C shares exceed $2.5 billion. See
    "Management of the Trust--Advisory and Administrative Fees" below.
(2) 12b-1 fees which are equal to .25% represent servicing fees which are paid
    annually to the Distributor and repaid to participating brokers, certain
    banks and other financial intermediaries. 12b-1 fees which exceed .25%
    represent aggregate distribution and servicing fees. See "Distributor and
    Distribution and Servicing Plans" in the Retail Prospectus.
 
The purpose of the foregoing tables is to assist investors in understanding
the various costs and expenses of the Trust that are borne directly or
indirectly by Class A and Class C shareholders of the Funds. The Examples for
Class A shares assume payment of the current maximum applicable sales load.
Due to the 12b-1 distribution fee imposed on Class C shares, a Class C
shareholder of a Fund may, depending on the length of time the shares are
held, pay more than the economic equivalent of the maximum front-end sales
charges permitted by relevant rules of the National Association of Securities
Dealers, Inc.
 
NOTE: The figures shown in the Examples are entirely hypothetical. They are
not representations of past or future performance or expenses; actual
performance and/or expenses may be more or less than shown.
 
                                       2
<PAGE>
 
2. Financial Highlights.
   
  The following financial highlights present certain information and ratios as
well as performance information for the Funds. Certain information provided
below is included in the June 30, 1998 PIMCO Funds Annual Report (relating to
Class A, B and C shares) and has been audited by PricewaterhouseCoopers LLP,
independent accountants, whose report thereon is also included in such Annual
Report. Information for the periods ended December 31, 1998 is included in the
December 31, 1998 PIMCO Funds Semi-Annual Report (relating to Class A, B and C
shares) and is unaudited. The Annual Report and Semi-Annual Report are
incorporated by reference in the Statement of Additional Information and may
be obtained without charge from the Distributor. Financial Statements and
related notes are also incorporated by reference in the Statement of
Additional Information.     
 
<TABLE>   
<CAPTION>
                                                                  Total                 Dividends  Distributions Distributions
                         Net Asset                Net Realized/   Income     Dividends  in Excess  From Net      in Excess
                         Value     Net            Unrealized Gain From       From Net   of Net     Realized      of Net
Selected Per Share Data  Beginning Investment     (Loss) on       Investment Investment Investment Capital       Realized
for the Period Ended:    of Period Income (Loss)  Investments     Operations Income     Income     Gains         Capital Gains
- ------------------------------------------------------------------------------------------------------------------------------
<S>                      <C>       <C>            <C>             <C>        <C>        <C>        <C>           <C>
International Developed
 Fund
Class A
 12/31/98+                $ 14.26     $(0.03)(a)      $(0.07)(a)   $ (0.10)    $ 0.00     $ 0.00      $(0.15)       $ 0.00
 06/30/98                   13.08       0.18 (a)        1.68 (a)      1.86      (0.10)      0.00       (0.58)         0.00
 01/20/97--06/30/97         11.71       0.09 (a)        1.28 (a)      1.37       0.00       0.00        0.00          0.00
Class C
 12/31/98+                  14.15      (0.08)(a)       (0.08)(a)     (0.16)      0.00       0.00       (0.15)         0.00
 06/30/98                   13.06       0.02 (a)        1.71 (a)      1.73      (0.06)      0.00       (0.58)         0.00
 01/20/97--06/30/97         11.71       0.06 (a)        1.29 (a)      1.35       0.00       0.00        0.00          0.00
Emerging Markets Fund
Class A
 12/31/98+                $ 10.12     $ 0.03 (a)      $(1.71)(a)   $ (1.68)    $(0.05)    $ 0.00      $ 0.00        $ 0.00
 06/30/98                   13.94       0.03 (a)       (3.85)(a)     (3.82)      0.00       0.00        0.00          0.00
 01/20/97--06/30/97         12.82       0.09 (a)        1.03 (a)      1.12       0.00       0.00        0.00          0.00
Class C
 12/31/98+                  10.02       0.00 (a)       (1.70)(a)     (1.70)      0.00       0.00        0.00          0.00
 06/30/98                   13.89      (0.06)(a)       (3.81)(a)     (3.87)      0.00       0.00        0.00          0.00
 01/20/97--06/30/97         12.82       0.04 (a)        1.03 (a)      1.07       0.00       0.00        0.00          0.00
<CAPTION>
                         Distributions
Selected Per Share Data  from
for the Period Ended:    Equalization
- ------------------------------------------------------------------------------------------------------------------------------
<S>                      <C>
International Developed
 Fund
Class A
 12/31/98+                  $ 0.00
 06/30/98                     0.00
 01/20/97--06/30/97           0.00
Class C
 12/31/98+                    0.00
 06/30/98                     0.00
 01/20/97--06/30/97           0.00
Emerging Markets Fund
Class A
 12/31/98+                  $ 0.00
 06/30/98                     0.00
 01/20/97--06/30/97           0.00
Class C
 12/31/98+                    0.00
 06/30/98                     0.00
 01/20/97--06/30/97           0.00
</TABLE>    
 
<TABLE>   
<CAPTION>
                                                                                             Ratio of Net
                                                                                  Ratio of   Investment
                         Tax Basis               Net Asset          Net Assets    Expenses   Income (Loss) Portfolio
Selected Per Share Data  Return of Total         Value End Total    End of        to Average to Average    Turnover
for the Period Ended:    Capital   Distributions of Period Return   Period (000s) Net Assets Net Assets    Rate
- --------------------------------------------------------------------------------------------------------------------
<S>                      <C>       <C>           <C>       <C>      <C>           <C>        <C>           <C>
International Developed
 Fund
Class A
 12/31/98+                $ 0.00      $ (0.15)    $ 14.01   (0.67)%    $1,494        1.54%*      (0.40)%*      20%
 06/30/98                   0.00        (0.68)      14.26   15.49       1,061        1.57         1.38         60
 01/20/97--06/30/97         0.00         0.00       13.08   11.70         318        1.54*        1.74*        77
Class C
 12/31/98+                  0.00        (0.15)      13.84   (1.10)      6,034        2.34*       (1.27)*       20
 06/30/98                   0.00        (0.64)      14.15   14.38       6,363        2.25         0.19         60
 01/20/97--06/30/97         0.00         0.00       13.06   11.53       2,526        2.28*        1.07*        77
Emerging Markets Fund
Class A
 12/31/98+                $ 0.00      $ (0.05)    $  8.39  (16.63)%    $  408        1.80%*       0.65%*       23%
 06/30/98                   0.00         0.00       10.12  (27.40)        426        1.78         0.25         52
 01/20/97--06/30/97         0.00         0.00       13.94    8.74         214        1.89*        1.52*        74
Class C
 12/31/98+                  0.00         0.00        8.32  (16.97)        711        2.55*       (0.06)*       23
 06/30/98                   0.00         0.00       10.02  (27.86)      1,169        2.54        (0.54)        52
 01/20/97--06/30/97         0.00         0.00       13.89    8.35       1,833        2.63*        0.66*        74
</TABLE>    
- --------
   
 + Unaudited     
 * Annualized
(a) Per share amounts based upon average number of shares outstanding during
    the period.
 
                                       3
<PAGE>
 
3. Investment Objectives and Policies.
 
  The investment objective and general investment policies of the Funds are
described below. There can be no assurance that the investment objective of
either Fund will be achieved. Because the market value of the Funds'
investments will change, the net asset value per share of the Funds also will
vary. The investment objective of each of the International Developed and
Emerging Markets Funds is fundamental and may not be changed without
shareholder approval by vote of a majority of the outstanding shares of the
Fund.
   
  International Developed Fund seeks long-term growth of capital. The Fund
invests primarily in a diversified portfolio of international equity
securities. The Morgan Stanley Capital International EAFE (Europe,
Australasia, Far East) Index ("EAFE Index") is used as a basis for choosing
the countries in which the Fund invests. However, the Fund is not limited to
the countries and weightings of the EAFE Index. Under normal market
conditions, the Fund will invest no more than 35% of its assets in securities
issued by companies located in countries that the Sub-Adviser determines, on
the basis of market capitalization, liquidity, and other considerations, to
have underdeveloped securities markets. The Sub-Adviser applies two levels of
screening in selecting investments for the Fund. First, an active country
selection model analyzes world markets and assigns a relative value ranking,
or "favorability weighting," to each country in the relevant country universe
to determine markets which are relatively undervalued. Second, at the stock
selection level, quality analysis and value analysis are applied to each
security, assessing variables such as balance sheet strength and earnings
growth (quality factors) and performance relative to the industry, price to
earnings ratios, and price to book ratios (value factors). This two-level
screening method identifies undervalued securities for purchase and also
provides a sell discipline for fully valued securities. In selecting
securities, the Sub-Adviser considers, to the extent practicable and on the
basis of information available to it for research, a company's environmental
business practices.     
 
  For purposes of allocating the Fund's investments, a company is considered
to be located in the country in which it is domiciled, in which it is
primarily traded, from which it derives a significant portion of its revenues,
or in which a significant portion of its goods or services are produced.
 
  Most of the international equity securities in which the Fund invests will
be traded in foreign currencies. The Fund may engage in foreign currency
transactions to protect itself against fluctuations in currency exchange rates
in relation to the U.S. dollar or to the weighting of a particular foreign
currency on the EAFE Index. Such foreign currency transactions may include
forward foreign currency contracts, foreign exchange futures contracts, and
options thereon, currency exchange transactions on a spot (i.e., cash) basis,
and put and call options on foreign currencies. Up to 10% of the Fund's assets
may be invested in the securities of other investment companies. The Fund may
sell (write) call and put options. The Fund may utilize stock index futures
contracts and options thereon for hedging purposes and also for investment
purposes. For instance, the Fund may invest in stock index futures contracts
and related options as an alternative to purchasing individual stocks to
adjust its exposure to a particular foreign market. See "Characteristics and
Risks of Securities and Investment Techniques--Derivative Instruments--Index
Futures" in the Retail Prospectus. The Fund may also engage in equity index
swap transactions.
 
  Investing in the securities of foreign issuers involves special risks and
considerations not typically associated with investing in U.S. companies. For
a discussion of such risks, see "Characteristics and Risks of Securities and
Investment Techniques--Foreign Securities" in the Retail Prospectus.
   
  Currently, the Portfolio Manager for the International Developed Fund is
James Smith of Blairlogie Capital Management ("Blairlogie"). It is anticipated
that the International Developed Fund will reorganize as a series of another
mutual fund family on or about April 30, 1999 and thereafter would not be
offered as a series of the Trust. Please see the Note under "Management of the
Trust" below for details.     
 
  Emerging Markets Fund seeks long-term growth of capital. The Fund invests
primarily in common stocks of companies located in countries identified as
emerging market countries. The Morgan Stanley Capital International Emerging
Markets Free Index ("MSCI Free Index") and the International Finance
Corporation
 
                                       4
<PAGE>
 
   
Emerging Markets Index ("IFC Index") are used as the bases for choosing the
countries in which the Fund invests. However, the Fund is not limited to the
countries and weightings of these indexes. The Sub-Adviser applies two levels
of screening in selecting investments for the Fund. First, an active country
selection model analyzes world markets and assigns a relative value ranking,
or "favorability weighting," to each country in the relevant country universe
to determine markets which are relatively undervalued. Second, at the stock
selection level, quality analysis and value analysis are applied to each
security, assessing variables such as balance sheet strength and earnings
growth (quality factors), and performance relative to the industry, price to
earnings ratios, and price to book ratios (value factors). This two-level
screening method identifies undervalued securities for purchase as well as
provides a sell discipline for fully valued securities. In selecting
securities, the Sub-Adviser considers, to the extent practicable and on the
basis of information available to it for research, a company's environmental
business practices.     
 
  For purposes of implementing its investment objective, the Fund invests
primarily in some or all of the following emerging market countries (this list
is not exclusive):
 
  Argentina       Greece          Jordan          Poland          Sri Lanka
  Brazil          Hong Kong       Malaysia        Portugal        Taiwan
  Chile           Hungary         Mexico          Romania         Thailand
  China           India           Pakistan        Russia          Turkey
  Colombia        Indonesia       Peru            South Africa    Venezuela
  Czech Republic  Israel          Philippines     South Korea     Zimbabwe
 
  For purposes of allocating the Fund's investments, a company is considered
to be located in the country in which it is domiciled, in which it is
primarily traded, from which it derives a significant portion of its revenues,
or in which a significant portion of its goods or services are produced.
 
  Most of the foreign securities in which the Fund invests will be denominated
in foreign currencies. The Fund may engage in foreign currency transactions to
protect itself against fluctuations in currency exchange rates in relation to
the U.S. dollar or to the weighting of a particular foreign currency on the
MSCI Free Index or the IFC Index. Such foreign currency transactions may
include forward foreign currency contracts, foreign exchange futures
contracts, and options thereon, currency exchange transactions on a spot
(i.e., cash) basis, and put and call options on foreign currencies. Up to 10%
of the Fund's assets may be invested in the securities of other investment
companies. The Fund may sell (write) call and put options. The Fund may
utilize stock index futures contracts and options thereon for hedging purposes
and also for investment purposes. For instance, the Fund may invest in stock
index futures contracts and related options as an alternative to purchasing
individual stocks to adjust its exposure to a particular foreign market. See
"Characteristics and Risks of Securities and Investment Techniques--Derivative
Instruments--Index Futures" in the Retail Prospectus. The Fund may also engage
in equity index swap transactions.
 
  Investing in the securities of foreign issuers, and particularly emerging
market issuers, involves special risks and considerations not typically
associated with investing in U.S. companies. For a discussion of such risks,
see "Characteristics and Risks of Securities and Investment Techniques--
Foreign Securities" in the Retail Prospectus.
   
  Currently, the Portfolio Manager for the Emerging Markets Fund is James
Smith of Blairlogie. It is anticipated that the Emerging Markets Fund will
reorganize as a series of another mutual fund family on or about April 30,
1999 and thereafter would not be offered as a series of the Trust. Please see
the Note under "Management of the Trust" below for details.     
 
  Stock Funds. The International Developed and Emerging Markets Funds are each
"Stock Funds" as described in the Retail Prospectus. Each Fund will invest
primarily (normally at least 65% of its assets) in common stock. Each Fund may
maintain a portion of its assets, which will usually not exceed 10%, in U.S.
Government securities, high quality debt securities (whose maturity or
remaining maturity will not exceed five
 
                                       5
<PAGE>
 
years), money market obligations, and in cash to provide for payment of the
Fund's expenses and to meet redemption requests. It is the policy of the Funds
to be as fully invested in common stocks as practicable at all times. This
policy precludes the Funds from investing in debt securities as a defensive
investment posture (although the Funds may invest in such securities to
provide for payment of expenses and to meet redemption requests). Accordingly,
investors in the Funds bear the risk of general declines in stock prices and
the risk that a Fund's exposure to such declines cannot be lessened by
investment in debt securities. The Funds may also invest in convertible
securities, preferred stocks, and warrants, subject to certain limitations.
 
4.  Characteristics and Risks of Securities and Investment Techniques.
 
  The Funds may invest in the securities and utilize the investment techniques
described under the following sub-headings of "Characteristics and Risks of
Securities and Investment Techniques" in the Retail Prospectus and are subject
to the attendant risks described: "Investment in Companies with Small and
Medium Market Capitalizations," "Foreign Securities," "Foreign Currency
Transactions," "Money Market Instruments," "Convertible Securities,"
"Derivative Instruments" (including "Options on Securities, Securities
Indexes, and Currencies," "Swap Agreement" (for the Emerging Markets Fund
only), "Futures Contracts and Options on Futures Contracts" and "Index
Futures"), "Loans of Portfolio Securities," "Short Sales," "When-Issued,
Delayed Delivery and Forward Commitment Transactions," "Repurchase
Agreements," "Reverse Repurchase Agreements and Other Borrowings," "Illiquid
Securities," and "Investment in Investment Companies." The Emerging Markets
Fund may enter into equity index swap agreements for purposes of gaining
exposure to the stocks making up an index of securities without actually
purchasing those stocks. Each Fund is subject to the risks described under
"Service Systems--Year 2000 Problem" in the Retail Prospectus.
 
  The Emerging Markets Fund is particularly sensitive to the risks associated
with investing in the securities of issuers based in "emerging market"
countries as described under "Foreign Securities" in the Retail Prospectus.
The Emerging Markets Fund is also subject to the risks described under
"Foreign Securities--Special Risks of Investing in Russian and Other Eastern
European Securities" in the Retail Prospectus.
 
  The annual portfolio turnover rates for the Funds were as follows for fiscal
1998 and 1997, respectively: International Developed Fund--60% and 77%;
Emerging Markets Fund--52% and 74%.
 
5.  Purchase, Redemption and Exchange Information.
 
  Please see "How to Buy Shares," "Alternative Purchase Arrangements,"
"Exchange Privilege" and "How to Redeem" in the Retail Prospectus for
information on purchase, redemption and exchange information for Class A and
Class C shares of the Funds.
   
  Class A, B and C shares of the International Developed and Emerging Markets
Funds are not available for purchase or exchange by new investors. As of
January 11, 1999, Class B shares are also not available for additional
purchases or exchanges by existing Class B shareholders. Existing Class A and
Class C shareholders of the Funds may purchase additional shares of the Funds.
Also, participants in certain self-directed qualified benefit plans that owned
Class A or Class C shares of a Fund as of April 1, 1999 for any single plan
participant will be eligible to direct the purchase of the Fund's Class A or
Class C shares by their plan account for so long as the plan continues to own
Class A or Class C shares of the Fund for any plan participant. It is
anticipated that the Funds will reorganize as series of another mutual fund
family on or about April 30, 1999. Thereafter, shares of the Funds would not
be available to any investor for purchase from the Trust or for exchanges
involving other PIMCO Funds. Please see the Note under "Management of the
Trust" below for details.     
 
6.  Management of the Trust.
 
  PIMCO Advisors L.P. ("PIMCO Advisors" or the "Adviser") serves as investment
adviser and administrator to the Funds. Please see "Management of the Trust--
Investment Adviser" and "Management of the Trust--Fund Administrator" in the
Retail Prospectus for a description of PIMCO Advisors.
 
 
                                       6
<PAGE>
 
   
  Blairlogie Capital Management ("Blairlogie") serves as the Sub-Adviser of
the Funds and James Smith of Blairlogie is primarily responsible for the day-
to-day management of each Fund. Please see "Management of the Trust--Sub-
Advisers--Blairlogie" in the Retail Prospectus for a description of Blairlogie
and biographical information about Mr. Smith.     
   
Note: It is anticipated that PIMCO Advisors will sell substantially all of its
ownership interest in Blairlogie to subsidiaries of Alleghany Asset
Management, Inc. on or about April 30, 1999 (the "Blairlogie Transaction").
The Blairlogie Transaction is subject to a number of conditions. In connection
with the Blairlogie Transaction, it is proposed that the Emerging Markets and
International Developed Funds will transfer all of their assets and
liabilities to newly formed series of Alleghany Funds to be managed by
Blairlogie (the proposed transactions are referred to as "Reorganizations").
The proposed Reorganizations are subject to a number of conditions. The Retail
Prospectus will be supplemented or revised if any of these events involving
Blairlogie and the Funds do not occur substantially in accordance with the
schedule outlined above.     
 
  Advisory and Administrative Fees
 
  The Funds feature fixed advisory and administrative fees. For providing or
arranging for the provision of investment advisory services to the Funds,
PIMCO Advisors receives monthly Advisory Fees from the International Developed
Fund at the annual rate of 0.60%, and from the Emerging Markets Fund at the
annual rate of 0.85%, each based on the average daily net assets of the
relevant Fund. Pursuant to the portfolio management agreement between PIMCO
Advisors and Blairlogie, PIMCO Advisors (and not the Funds or the Trust) pays
Blairlogie fees at the annual rate of 0.50% based on the average daily net
assets of the International Developed Fund and 0.75% based on the average
daily net assets of the Emerging Markets Fund.
 
  For providing or procuring administrative services for the Funds, PIMCO
Advisors (in its capacity as Administrator) receives monthly Administrative
Fees from each Fund at the following annual rate based on the average daily
net assets attributable in the aggregate to the Fund's Class A, Class B and
Class C Shares: 0.65% of the first $2.5 billion and 0.60% of amounts in excess
of $2.5 billion.
 
7.  Distributions.
 
  Net investment income from interest and dividends, if any, will be declared
and paid at least annually to shareholders of record by each of the
International Developed and Emerging Markets Funds.
   
8. Description of the Trust--Voting     
   
  As of March 10, 1999, the following were shareholders of record of at least
25% of the outstanding voting securities of the indicated Fund: Pacific Mutual
Life Insurance Company Employee's Retirement Plan Trust (Newport Beach,
California) and Charles Schwab & Co. (San Francisco, California) with respect
to the Emerging Markets Fund.     
 
                                       7
<PAGE>
 
PIMCO Funds Prospectus

Multi-Manager 
Series
    
April 1, 1999      

Share Classes

(Ins)  Institutional
(Adm)  Administrative
    
- ----------------------------------------------------------------------------
BLAIRLOGIE CAPITAL MANAGEMENT
Emerging Markets Fund                     International Fund
International Developed Fund

- ----------------------------------------------------------------------------
CADENCE CAPITAL MANAGEMENT
Capital Appreciation Fund                 Small-Cap Growth Fund           
Mid-Cap Growth Fund                       Micro-Cap Growth Fund   

- ----------------------------------------------------------------------------
COLUMBUS CIRCLE INVESTORS
Renaissance Fund                          Mid-Cap Equity Fund
Core Equity Fund                          International Growth Fund

- ----------------------------------------------------------------------------
NFJ INVESTMENT GROUP
Equity Income Fund                        Value 25 Fund
Value Fund                                Small-Cap Value Fund    

- ----------------------------------------------------------------------------
PIMCO EQUITY ADVISORS
Growth Fund                               Opportunity Fund
Target Fund                               Innovation Fund

- ----------------------------------------------------------------------------
PARAMETRIC PORTFOLIO ASSOCIATES
Enhanced Equity Fund                      Tax-Efficient Structured Emerging 
Tax-Efficient Equity Fund                 Markets Fund
Structured Emerging Markets Fund                                            
                                                                            
- ----------------------------------------------------------------------------
MULTIPLE MANAGERS
Balanced Fund
                                                                                
                                                                   
                                                                  P I M C O
                                                                  ---------
                                                                      FUNDS
<PAGE>
 
PIMCO Funds: Multi-Manager Series
Prospectus
   
April 1, 1999     
   
PIMCO Funds: Multi-Manager Series (the "Trust"), formerly PIMCO Funds: Equity
Advisors Series, is an open-end series management investment company ("mutual
fund"). This Prospectus describes twenty-four separate diversified investment
portfolios (the "Funds") of the Trust. Each Fund has its own investment
objective and policies. The Trust is designed to provide access to the
professional investment management services offered by PIMCO Advisors L.P.
("PIMCO Advisors") and the Funds' Sub-Advisers.     
 
This Prospectus describes two classes of shares which may be offered by each
Fund: the "Institutional Class" and the "Administrative Class." Through
separate prospectuses, certain Funds may offer up to four additional classes of
shares, Class A, Class B, Class C, and Class D shares. See "Other Information--
Multiple Classes of Shares."
 
This Prospectus sets forth concisely the information a prospective investor
should know before investing in the Funds. It should be read and retained for
ready reference to information about the Funds. Information about the
investment objective of each Fund, along with a detailed description of the
types of securities in which each Fund may invest, and of investment policies
and restrictions applicable to each Fund, are set forth in this Prospectus.
There can be no assurance that the investment objective of any Fund will be
achieved. Because the market value of the Funds' investments will change, the
investment returns and net asset value per share of each Fund will vary.
   
A Statement of Additional Information, dated April 1, 1999, as amended or
supplemented from time to time, containing additional and more detailed
information about the Funds, has been filed with the Securities and Exchange
Commission and is hereby incorporated by reference into this Prospectus. The
Securities and Exchange Commission maintains an Internet World Wide Web site
(at www.sec.gov) which contains the Statement of Additional Information,
materials that are incorporated by reference into this Prospectus and the
Statement of Additional Information, and other information about the Funds. The
Statement of Additional Information is available without charge and may be
obtained by writing or calling:     
 
                     PIMCO Funds
                     840 Newport Center Drive, Suite 300
                     Newport Beach, CA 92660
                     Telephone: 1-800-927-4648
                             1-800-987-4626 (PIMCO Infolink Audio Response
                                        Network).
 
These securities have not been approved or disapproved by the Securities and
Exchange Commission or any state securities commission, nor has the Securities
and Exchange Commission or any state securities commission passed upon the
accuracy or adequacy of this Prospectus. Any representation to the contrary is
a criminal offense.
 
Shares of the Funds are not deposits or obligations of, or guaranteed or
endorsed by, any financial institution, and the shares are not federally
insured by the Federal Deposit Insurance Corporation, the Federal Reserve
Board, or any other agency, and involve risk, including the possible loss of
principal.
 PIMCO Funds: Multi-Manager Series
2
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>   
<CAPTION>
                                                                            Page
                                                                            ----
   <S>                                                                      <C>
   Prospectus Summary......................................................   4
   Expense Information.....................................................   9
   Financial Highlights....................................................  12
   Investment Objectives and Policies......................................  20
   Investment Restrictions.................................................  36
   Characteristics and Risks of Securities and Investment Techniques.......  38
   Management of the Trust.................................................  52
   Purchase of Shares......................................................  59
   Redemption of Shares....................................................  63
   Portfolio Transactions..................................................  66
   Net Asset Value.........................................................  67
   Dividends, Distributions and Taxes......................................  68
   Other Information.......................................................  70
</TABLE>    
                                                                    Prospectus
                                                                               3
<PAGE>
 
                               PROSPECTUS SUMMARY
 
  PIMCO Funds: Multi-Manager Series (the "Trust") is an open-end management
investment company ("mutual fund") organized as a Massachusetts business trust
on August 24, 1990. This Prospectus describes twenty-four separate diversified
investment portfolios (the "Funds") offered by the Trust.
                                
                             Funds at a Glance     
 
  The following chart provides general information about each of the Funds. It
is qualified in its entirety by the more complete descriptions of the Funds
appearing elsewhere in this Prospectus.
 
<TABLE>   
<CAPTION>
Sub-Adviser and Fund     Investment Objective            Primary Investments
- ----------------------------------------------------------------------------------------
<S>                      <C>                             <C>
Blairlogie Capital
 Management
Emerging Markets         Seeks long-term growth of       Invests primarily in common
                         capital.                        stocks of companies located in
                                                         emerging market countries.
- ----------------------------------------------------------------------------------------
International Developed  Seeks long-term growth of       Invests primarily in a
                         capital.                        diversified portfolio of
                                                         international equity
                                                         securities.
- ----------------------------------------------------------------------------------------
International            Seeks capital appreciation;     Invests primarily in common
                         income is incidental.           stocks of non-U.S. issuers.
- ----------------------------------------------------------------------------------------
Cadence Capital
 Management
Capital Appreciation     Seeks growth of capital.        Invests primarily in common
                                                         stocks of companies with market
                                                         capitalizations of at least $1
                                                         billion that have improving
                                                         fundamentals and whose stock is
                                                         reasonably valued by the
                                                         market.
- ----------------------------------------------------------------------------------------
Mid-Cap Growth           Seeks growth of capital.        Invests primarily in common
                                                         stocks of companies with market
                                                         capitalizations in excess of
                                                         $500 million that have
                                                         improving fundamentals and
                                                         whose stock is reasonably
                                                         valued by the market.
- ----------------------------------------------------------------------------------------
Small-Cap Growth         Seeks growth of capital.        Invests primarily in common
                                                         stocks of companies with market
                                                         capitalizations between $50
                                                         million and $1 billion that
                                                         have improving fundamentals and
                                                         whose stock is reasonably
                                                         valued by the market.
- ----------------------------------------------------------------------------------------
Micro-Cap Growth         Seeks long-term growth of       Invests primarily in common
                         capital.                        stocks of companies with market
                                                         capitalizations of less than
                                                         $100 million that have
                                                         improving fundamentals and
                                                         whose stock is reasonably
                                                         valued by the market.
- ----------------------------------------------------------------------------------------
</TABLE>    
 
                                                        (continued on next page)
 PIMCO Funds: Multi-Manager Series
4
<PAGE>
 
                         PROSPECTUS SUMMARY (continued)
                          
                       Funds at a Glance (continued)     
 
<TABLE>   
<CAPTION>
Sub-Adviser and Fund     Investment Objective            Primary Investments
- ----------------------------------------------------------------------------------------
<S>                      <C>                             <C>
Columbus Circle
 Investors
Renaissance*             Seeks long-term growth of       Invests primarily in common
                         capital and income.             stocks with below-average
                                                         valuations that have improving
                                                         business fundamentals.
- ----------------------------------------------------------------------------------------
Core Equity              Seeks long-term growth of       Invests primarily in common
                         capital, with income as a       stocks of companies with market
                         secondary objective.            capitalizations in excess of $3
                                                         billion.
- ----------------------------------------------------------------------------------------
Mid-Cap Equity           Seeks long-term growth of       Invests primarily in common
                         capital.                        stocks of companies with market
                                                         capitalizations between $800
                                                         million and $3 billion.
- ----------------------------------------------------------------------------------------
International Growth     Seeks long-term capital         Invests primarily in an
                         appreciation.                   international portfolio of
                                                         equity and equity-related
                                                         securities.
- ----------------------------------------------------------------------------------------
NFJ Investment Group
Equity Income            Seeks current income as a       Invests primarily in common
                         primary investment objective,   stocks with below-average price
                         and long-term growth of capital to earnings ratios and higher
                         as a secondary objective.       dividend yields relative to
                                                         their industry groups.
- ----------------------------------------------------------------------------------------
Value                    Seeks long-term growth of       Invests primarily in common
                         capital and income.             stocks with below-average price
                                                         to earnings ratios relative to
                                                         their industry groups.
- ----------------------------------------------------------------------------------------
Value 25                 Seeks long-term growth of       Invests primarily in
                         capital and income.             approximately 25 common stocks
                                                         with medium market
                                                         capitalizations and that have
                                                         below-average price to earnings
                                                         ratios relative to their
                                                         industry groups.
- ----------------------------------------------------------------------------------------
Small-Cap Value          Seeks long-term growth of       Invests primarily in common
                         capital and income.             stocks of companies with market
                                                         capitalizations between $50
                                                         million and $1 billion and
                                                         below-average price to earnings
                                                         ratios relative to their
                                                         industry groups.
- ----------------------------------------------------------------------------------------
PIMCO Equity Advisors
Growth                   Seeks long-term growth of       Invests primarily in common
                         capital; income is incidental.  stocks of companies with market
                                                         capitalizations of at least $5
                                                         billion.
- ----------------------------------------------------------------------------------------
Target                   Seeks capital appreciation; no  Invests primarily in common
                         consideration given to income.  stocks of companies with market
                                                         capitalizations of between $1
                                                         billion and $10 billion.
- ----------------------------------------------------------------------------------------
Opportunity              Seeks capital appreciation; no  Invests primarily in common
                         consideration given to income.  stocks of companies with market
                                                         capitalizations of less than $2
                                                         billion.
- ----------------------------------------------------------------------------------------
Innovation               Seeks capital appreciation; no  Invests primarily in common
                         consideration given to income.  stocks of technology-related
                                                         companies.
- ----------------------------------------------------------------------------------------
</TABLE>    
   
* On or about May 7, 1999, PIMCO Equity Advisors will assume full portfolio
  management responsibility for the Renaissance Fund. See "Management of the
  Trust--Sub-Advisers--Columbus Circle."     
                                                      
                                                   (continued on next page)     
                                                                Prospectus
                                                                               5
<PAGE>
 
                         PROSPECTUS SUMMARY (continued)
                          
                       Funds at a Glance (continued)     
 
<TABLE>   
<CAPTION>
Sub-Adviser and Fund     Investment Objective            Primary Investments
- ----------------------------------------------------------------------------------------
<S>                      <C>                             <C>
Parametric Portfolio
 Associates
Enhanced Equity          Seeks to provide a total return Invests primarily in common
                         which equals or exceeds the     stocks represented in the S&P
                         total return performance of an  500.
                         index representing the
                         performance of a reasonably
                         broad spectrum of common stocks
                         (currently the Standard &
                         Poor's 500 Composite Stock
                         Price Index (the "S&P 500")).
- ----------------------------------------------------------------------------------------
Tax-Efficient Equity     Seeks maximum after-tax growth  Invests primarily in a broadly
                         of capital.                     diversified portfolio of at
                                                         least 200 common stocks of
                                                         companies with larger market
                                                         capitalizations.
- ----------------------------------------------------------------------------------------
Structured Emerging      Seeks long-term growth of       Invests primarily in common
 Markets                 capital.                        stocks of companies located in
                                                         emerging market countries.
- ----------------------------------------------------------------------------------------
Tax-Efficient Structured Has the same investment         Invests primarily in common
 Emerging Markets        objective and policies as the   stocks of companies located in
                         Structured Emerging Markets     emerging market countries.
                         Fund, except that the Fund
                         seeks to achieve superior
                         after-tax returns for
                         shareholders by employing a
                         variety of tax-efficient
                         management strategies.
- ----------------------------------------------------------------------------------------
Multiple Managers
Balanced                 Seeks total return consistent   Invests in common stocks, fixed
                         with prudent investment         income securities and money
                         management.                     market instruments.
- ----------------------------------------------------------------------------------------
</TABLE>    
       
                      Investment Risks and Considerations
   
  The following are some of the primary risks relevant to an investment in the
Funds and to the securities in which the Funds invest. Investors should read
this Prospectus carefully for a more complete discussion of the risks relating
to an investment in the Funds. The value of all securities and other
instruments held by the Funds vary from time to time in response to a wide
variety of market factors. Consequently, the net asset value per share of each
Fund will vary. The net asset value per share of any Fund may be less at the
time of redemption than it was at the time of investment. Except for the
Balanced Fund, all of the Funds invest primarily in common stock or other types
of equity securities (the "Stock Funds"). Each of the International,
Renaissance, International Growth, Growth, Target, Opportunity, and Innovation
Funds may invest a portion of its assets in debt securities and may invest up
to 100% of its assets in money market instruments for temporary defensive
purposes. It is the policy of the other Stock Funds to be as fully invested as
practicable in common stock, except that the Structured Emerging Markets and
Tax-Efficient Structured Emerging Markets Funds may invest up to 5% of their
assets in debt securities of emerging market issuers. These other Stock Funds
may not invest in debt securities as a defensive investment posture (although
they may invest in such securities to provide for payment of expenses and to
meet redemption requests), and, therefore, may be more vulnerable to general
declines in stock prices. For further information, see "Investment Objectives
and Policies--Stock Funds."     
 
  Certain of the Funds may invest in debt securities rated lower than Baa by
Moody's Investors Service, Inc. ("Moody's") or BBB by Standard & Poor's Ratings
Services ("S&P"). Such securities carry a high degree of credit risk and are
considered speculative by the major rating agencies. Certain Funds may invest
in securities of foreign issuers, which may be subject to additional risk
factors, including foreign currency and political risks, not applicable to
 PIMCO Funds: Multi-Manager Series
6
<PAGE>
 
                         PROSPECTUS SUMMARY (continued)
securities of U.S. issuers. Investments by certain Funds in securities of
issuers based in countries with developing economies may pose political,
currency, and market risks greater than, or in addition to, risks of investing
in foreign developed countries. Certain of the Funds' investment techniques may
involve a form of borrowing, which may tend to exaggerate the effect on net
asset value of any increase or decrease in the market value of a Fund's
portfolio and may require liquidation of portfolio positions when it is not
advantageous to do so.
 
  Certain Funds may (but are not required to) use derivative instruments,
including futures, options, options on futures, and swap agreements, for
hedging purposes or as part of their investment strategies. Use of these
instruments may involve certain costs and risks, including the risk that a Fund
could not close out a position when it would be most advantageous to do so, the
risk of an imperfect correlation between the value of the securities being
hedged and the value of the particular derivative instrument, and the risk that
unexpected changes in interest rates may adversely affect the value of a Fund's
investments in particular derivative instruments.
   
  The Funds offer their shares to both institutional and retail investors.
Institutional shareholders, some of whom also may be investment advisory
clients of PIMCO Advisors L.P. or its affiliates, may hold large positions in
certain of the Funds. Such shareholders may on occasion make large redemptions
of their holdings in the Funds to meet their liquidity needs, in connection
with strategic adjustments to their overall portfolio of investments, or for
other purposes. Large redemptions from some Funds could require liquidation of
portfolio positions when it is not most desirable to do so. Liquidation of
portfolio holdings also may cause a Fund to realize taxable capital gains.     
                       
                    Investment Adviser and Sub-Advisers     
   
  PIMCO Advisors L.P. ("PIMCO Advisors" or the "Adviser") serves as investment
adviser to the Trust. PIMCO Advisors is one of the largest investment
management firms in the U.S. As of December 31, 1998, PIMCO Advisors and its
subsidiary partnerships had approximately $244.2 billion in assets under
management. Subject to the supervision of the Board of Trustees of the Trust,
the Adviser is responsible for the investment program for the Funds in
accordance with each Fund's investment objective, policies, and restrictions.
The PIMCO Equity Advisors division ("PIMCO Equity Advisors") of PIMCO Advisors
serves as the Sub-Adviser for the Growth, Target, Opportunity, and Innovation
Funds. For all of the other Funds, the Adviser has engaged its affiliates to
serve as Sub-Advisers. These affiliated Sub-Advisers, each of which is a
subsidiary partnership of PIMCO Advisors, are Blairlogie Capital Management
("Blairlogie"), Cadence Capital Management ("Cadence"), Columbus Circle
Investors ("Columbus Circle"), NFJ Investment Group ("NFJ"), Pacific Investment
Management Company ("Pacific Investment Management"), and Parametric Portfolio
Associates ("Parametric"). Under the supervision of PIMCO Advisors, the Sub-
Advisers make determinations with respect to the purchase and sale of portfolio
securities, and they place, in the names of the Funds, orders for execution of
the Funds' transactions. For the Balanced Fund, PIMCO Advisors determines the
allocation of the Fund's assets among common stock and fixed income securities
and reserves the right to allocate a portion of the Fund's assets for
investment in money market instruments and to manage the investment of such
assets. For its services, the Adviser receives fees based on the average daily
net assets of each Fund. The Adviser (and not the Funds or the Trust)
compensates the Sub-Advisers it retains for the Funds out of its advisory fees.
See "Management of the Trust."     
   
  On or about April 30, 1999, it is anticipated that PIMCO Advisors will sell
substantially all of its ownership interest in Blairlogie (the "Blairlogie
Transaction"). In connection with the Blairlogie Transaction, the Emerging
Markets and International Developed Funds will reorganize as series of another
mutual fund family and thereafter would not be offered as series of the Trust.
PIMCO Advisors has determined to continue to retain Blairlogie as Sub-Adviser
of the International Fund subsequent to the Blairlogie Transaction pursuant to
a new portfolio management agreement between PIMCO Advisors and Blairlogie. See
"Management of the Trust--Sub-Advisers--Blairlogie."     
                                                                Prospectus
                                                                               7
<PAGE>
 
                         PROSPECTUS SUMMARY (continued)
 
                               Purchase of Shares
 
  This Prospectus describes two classes of shares of each Fund: the
"Institutional Class" and the "Administrative Class." Shares of the
Institutional Class are offered primarily for direct investment by
institutional investors (Institutional Class shares may also be offered through
certain financial intermediaries that charge their customers transaction or
other fees with respect to the customers' investments in the Funds). Shares of
the Administrative Class are offered primarily through employee benefit plan
alliances, broker-dealers and other intermediaries. Each Fund pays service
and/or distribution fees to such entities for services they provide to such
Fund's shareholders of that class. Administrative Class shares of certain Funds
are not currently available for investment.
 
  Except with respect to shares of the Structured Emerging Markets and Tax-
Efficient Structured Emerging Markets Funds, shares of the Institutional Class
and Administrative Class of the Funds are offered at the relevant next
determined net asset value with no sales charge or other fee. A "Fund
Reimbursement Fee" is normally charged on purchases of Institutional Class and
Administrative Class shares of the Structured Emerging Markets and Tax-
Efficient Structured Emerging Markets Funds equal to 1.00% of the net asset
value of the shares purchased. See "Purchase of Shares--Fund Reimbursement
Fees." The minimum initial investment for shares of either class is $5 million,
subject to certain exceptions described under "Purchase of Shares." Shares of
either class may also be offered to clients of the Adviser and its affiliates.
Shares of the Micro-Cap Growth and Small-Cap Growth Funds are normally not
available for purchase by new investors, although purchase orders may be
accepted in certain circumstances. Existing shareholders may continue to invest
in these Funds. These restrictions may be changed or eliminated at any time at
the discretion of the Trust's Board of Trustees. See "Purchase of Shares."
Also, as noted above under "Investment Adviser and Sub-Advisers," it is
anticipated that the Emerging Markets and International Developed Funds will
reorganize as series of another mutual fund family on or about April 30, 1999,
and thereafter would not be offered as series of the Trust. See "Management of
the Trust--Sub-Advisers--Blairlogie."
 
                           Redemptions and Exchanges
 
  Institutional Class and Administrative Class shares of each Fund may be
redeemed without cost (except as noted below) at the relevant net asset value
per share of the class of that Fund next determined after receipt of the
redemption request. The redemption price may be more or less than the purchase
price.
 
  Institutional Class and Administrative Class shares of any Fund may be
exchanged without cost (except as noted below) on the basis of relative net
asset values for shares of the same class of any other Fund or other series of
the Trust offered generally to the public, or for shares of the same class of a
series of PIMCO Funds: Pacific Investment Management Series, an affiliated
mutual fund family composed primarily of fixed income portfolios managed by
Pacific Investment Management. See "Redemption of Shares."
 
  A Fund Reimbursement Fee is normally charged on redemptions and exchanges
involving Institutional Class and Administrative Class shares of the Structured
Emerging Markets and Tax-Efficient Structured Emerging Markets Funds equal to
1.00% of the net asset value of the shares redeemed or exchanged. See
"Redemption of Shares."
 PIMCO Funds: Multi-Manager Series
8
<PAGE>
 
                              EXPENSE INFORMATION
 
Shareholder Transaction Expenses (Institutional Class and Administrative
Class):
 
<TABLE>
<S>                                                                      <C>
  Sales Load Imposed on Purchases....................................... None
  Sales Load Imposed on Reinvested Dividends............................ None
  Redemption Fee........................................................ None
  Exchange Fee.......................................................... None
  Fund Reimbursement Fee Imposed on Purchases, Redemptions and
   Exchanges:
   Structured Emerging Markets and Tax-Efficient Structured Emerging
    Markets Funds....................................................... 1.00%*
   All Other Funds...................................................... None
</TABLE>
 
   * Unless a waiver applies, investors are charged a "Fund Reimbursement Fee"
   in connection with purchases and redemptions involving Institutional Class
   and Administrative Class shares of the Structured Emerging Markets and Tax-
   Efficient Structured Emerging Markets Funds equal to 1.00% of the net asset
   value of the shares purchased or redeemed. The fee also applies to
   exchanges involving these Funds. See "Purchase of Shares--Fund
   Reimbursement Fees" and "Redemption of Shares."
 
Annual Fund Operating Expenses (as a percentage of average daily net assets):
<TABLE>   
<CAPTION>
                                               Advisory Administrative  Total
   Institutional Class Shares                    Fee         Fee       Expenses
   --------------------------                  -------- -------------- --------
   <S>                                         <C>      <C>            <C>
   Emerging Markets Fund......................   0.85%       0.50%       1.35%
   International Developed Fund...............   0.60        0.50        1.10
   International Fund.........................   0.55        0.50        1.05
   Capital Appreciation Fund..................   0.45        0.25        0.70
   Mid-Cap Growth Fund........................   0.45        0.25        0.70
   Small-Cap Growth Fund......................   1.00        0.25        1.25
   Micro-Cap Growth Fund......................   1.25        0.25        1.50
   Renaissance Fund...........................   0.60        0.25        0.85
   Core Equity Fund...........................   0.57        0.25        0.82
   Mid-Cap Equity Fund........................   0.63        0.25        0.88
   International Growth Fund..................   0.85        0.50        1.35
   Equity Income Fund.........................   0.45        0.25        0.70
   Value Fund.................................   0.45        0.25        0.70
   Value 25 Fund..............................   0.50        0.25        0.75
   Small-Cap Value Fund.......................   0.60        0.25        0.85
   Growth Fund................................   0.50        0.25        0.75
   Target Fund................................   0.55        0.25        0.80
   Opportunity Fund...........................   0.65        0.25        0.90
   Innovation Fund............................   0.65        0.25        0.90
   Enhanced Equity Fund.......................   0.45        0.25        0.70
   Tax-Efficient Equity Fund..................   0.45        0.25        0.70
   Structured Emerging Markets Fund...........   0.45        0.50        0.95
   Tax-Efficient Structured Emerging Markets
    Fund......................................   0.45        0.50        0.95
   Balanced Fund..............................   0.45        0.25        0.70
</TABLE>    
 
<TABLE>   
<CAPTION>
                                                               Service/
                                       Advisory Administrative  12b-1    Total
   Administrative Class Shares           Fee         Fee         Fee    Expenses
   ---------------------------         -------- -------------- -------- --------
   <S>                                 <C>      <C>            <C>      <C>
   Emerging Markets Fund..............   0.85%       0.50%       0.25%    1.60%
   International Developed Fund.......   0.60        0.50        0.25     1.35
   International Fund.................   0.55        0.50        0.25     1.30
   Capital Appreciation Fund..........   0.45        0.25        0.25     0.95
   Mid-Cap Growth Fund................   0.45        0.25        0.25     0.95
   Small-Cap Growth Fund..............   1.00        0.25        0.25     1.50
   Micro-Cap Growth Fund..............   1.25        0.25        0.25     1.75
   Renaissance Fund...................   0.60        0.25        0.25     1.10
   Core Equity Fund...................   0.57        0.25        0.25     1.07
   Mid-Cap Equity Fund................   0.63        0.25        0.25     1.13
   International Growth Fund..........   0.85        0.50        0.25     1.60
   Equity Income Fund ................   0.45        0.25        0.25     0.95
   Value Fund.........................   0.45        0.25        0.25     0.95
   Value 25 Fund......................   0.50        0.25        0.25     1.00
   Small-Cap Value Fund...............   0.60        0.25        0.25     1.10
   Growth Fund........................   0.50        0.25        0.25     1.00
   Target Fund........................   0.55        0.25        0.25     1.05
   Opportunity Fund...................   0.65        0.25        0.25     1.15
</TABLE>    
                                                               Prospectus
                                                                              9
<PAGE>
 
                        EXPENSE INFORMATION (continued)
Annual Fund Operating Expenses (continued):
<TABLE>   
<CAPTION>
                                                              Service/
                                      Advisory Administrative  12b-1    Total
   Administrative Class Shares          Fee         Fee         Fee    Expenses
   ---------------------------        -------- -------------- -------- --------
   <S>                                <C>      <C>            <C>      <C>
   Innovation Fund...................   0.65%       0.25%       0.25%    1.15%
   Enhanced Equity Fund..............   0.45        0.25        0.25     0.95
   Tax-Efficient Equity Fund.........   0.45        0.25        0.25     0.95
   Structured Emerging Markets Fund..   0.45        0.50        0.25     1.20
   Tax-Efficient Structured Emerging
    Markets Fund.....................   0.45        0.50        0.25     1.20
   Balanced Fund.....................   0.45        0.25        0.25     0.95
</TABLE>    
 
  For a more detailed discussion of the Funds' fees and expenses, see "Fund
Administrator," "Advisory and Administrative Fees," and "Service and
Distribution Fees" under the caption "Management of the Trust."
 
Example of Fund Expenses:
  An investor would pay the following expenses on a $1,000 investment assuming
(1) a hypothetical 5% annual return and (2) redemption at the end of each time
period:
 
<TABLE>   
<CAPTION>
   Institutional Class Shares                   1 year 3 years 5 years 10 years
   --------------------------                   ------ ------- ------- --------
   <S>                                          <C>    <C>     <C>     <C>
   Emerging Markets Fund.......................  $14     $43    $ 74     $162
   International Developed Fund................   11      35      61      134
   International Fund..........................   11      33      58      128
   Capital Appreciation Fund...................    7      22      39       87
   Mid-Cap Growth Fund.........................    7      22      39       87
   Small-Cap Growth Fund.......................   13      40      69      151
   Micro-Cap Growth Fund.......................   15      47      82      179
   Renaissance Fund............................    9      27      47      105
   Core Equity Fund............................    8      26      46      101
   Mid-Cap Equity Fund.........................    9      28      49      108
   International Growth Fund...................   14      43      74      162
   Equity Income Fund..........................    7      22      39       87
   Value Fund..................................    7      22      39       87
   Value 25 Fund...............................    8      24      42       93
   Small-Cap Value Fund........................    9      27      47      105
   Growth Fund.................................    8      24      42       93
   Target Fund.................................    8      26      44       99
   Opportunity Fund............................    9      29      50      111
   Innovation Fund.............................    9      29      50      111
   Enhanced Equity Fund........................    7      22      39       87
   Tax-Efficient Equity Fund...................    7      22      39       87
   Structured Emerging Markets Fund*...........   29      50      72      135
   Tax-Efficient Structured Emerging Markets
    Fund*......................................   29      50      72      135
   Balanced Fund...............................    7      22      39       87
<CAPTION>
   Administrative Class Shares                  1 year 3 years 5 years 10 years
   ---------------------------                  ------ ------- ------- --------
   <S>                                          <C>    <C>     <C>     <C>
   Emerging Markets Fund.......................  $16     $50    $ 87     $190
   International Developed Fund................   14      43      74      162
   International Fund..........................   13      41      71      157
   Capital Appreciation Fund...................   10      30      53      117
   Mid-Cap Growth Fund.........................   10      30      53      117
   Small-Cap Growth Fund.......................   15      47      82      179
   Micro-Cap Growth Fund.......................   18      55      95      206
   Renaissance Fund............................   11      35      61      134
   Core Equity Fund............................   11      34      59      131
   Mid-Cap Equity Fund ........................   12      36      62      137
   International Growth Fund...................   16      50      87      190
   Equity Income Fund..........................   10      30      53      117
</TABLE>    
 
10
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
                        EXPENSE INFORMATION (continued)
 
Example of Fund Expenses (continued):
 
<TABLE>   
<CAPTION>
   Administrative Class Shares                  1 year 3 years 5 years 10 years
   ---------------------------                  ------ ------- ------- --------
   <S>                                          <C>    <C>     <C>     <C>
   Value Fund..................................  $10     $30     $53     $117
   Value 25 Fund...............................   10      32      55      122
   Small-Cap Value Fund........................   11      35      61      134
   Growth Fund.................................   10      32      55      122
   Target Fund.................................   11      33      58      128
   Opportunity Fund............................   12      37      63      140
   Innovation Fund.............................   12      37      63      140
   Enhanced Equity Fund........................   10      30      53      117
   Tax-Efficient Equity Fund...................   10      30      53      117
   Structured Emerging Markets Fund*...........   32      58      85      164
   Tax-Efficient Structured Emerging Markets
    Fund*......................................   32      58      85      164
   Balanced Fund...............................   10      30      53      117
</TABLE>    
      
   * The Examples for the Structured Emerging Markets and Tax-Efficient
   Structured Emerging Markets Funds assume the payment of a Fund
   Reimbursement Fee both at the time of purchase and at the time of
   redemption even though such fees may be waived for certain investors. See
   "Purchase of Shares--Fund Reimbursement Fees" and "Redemption of Shares."
   Assuming there is no redemption at the end of the time periods listed, the
   Examples for 1, 3, 5, and 10 years, respectively, for the Structured
   Emerging Markets and Tax-Efficient Structured Emerging Markets Funds would
   be as follows: Institutional Class Shares--$20, $40, $62, and $125; and
   Administrative Class Shares--$22, $48, $75, and $154.     
 
  The above tables are provided to assist investors in understanding the
various expenses which may be borne directly or indirectly in connection with
an investment in the Funds. The information is based upon each Fund's current
fees and expenses. This example should not be considered a representation of
past or future expenses or performance. Actual expenses may be higher or lower
than those shown.
                                                              Prospectus
                                                                             11
<PAGE>
 
                              FINANCIAL HIGHLIGHTS
   
The financial highlights set forth on the following pages present certain
information and ratios as well as performance information for the Funds that
were operational during the periods listed. Certain information provided below
for periods through June 30, 1998 is included in the June 30, 1998 PIMCO Funds
Annual Report (relating to Institutional Class and Administrative Class shares)
and has been audited by PricewaterhouseCoopers LLP, independent accountants,
whose report thereon is also included in such Annual Report. Information for
the periods ended December 31, 1998 is included in the December 31, 1998 PIMCO
Funds Semi-Annual Report (relating to Institutional Class and Administrative
Class shares) and is unaudited. The Annual Report and Semi-Annual Report are
incorporated by reference in the Statement of Additional Information and may be
obtained from the Trust without charge. Financial statements and related notes
are also incorporated by reference in the Statement of Additional Information.
The Growth, Target, Opportunity, and Innovation Funds did not offer
Institutional or Administrative Class Shares during the reporting periods.
Prior to November 1, 1995, the fiscal year end for each Fund listed below was
October 31.     
 
  Selected data for a share outstanding throughout each period:
 
<TABLE>   
<CAPTION>
                         Net Asset                Net Realized/     Total    Dividends  Dividends in  Distributions
                           Value        Net         Unrealized   Income from  from Net  Excess of Net   from Net
                         Beginning  Investment    Gain (Loss) on Investment  Investment  Investment     Realized
                         of Period Income (Loss)   Investments   Operations    Income      Income     Capital Gains
- -------------------------------------------------------------------------------------------------------------------
<S>                      <C>       <C>            <C>            <C>         <C>        <C>           <C>
Emerging Markets Fund
 Institutional Class
  12/31/98 +              $10.18      $ 0.05 (a)      $(1.73)(a)   $(1.68)     $(0.04)     $ 0.00        $ 0.00
  06/30/98                 13.96        0.06 (a)       (3.84)(a)    (3.78)       0.00        0.00          0.00
  06/30/97                 12.66        0.06 (a)        1.30 (a)     1.36       (0.06)       0.00          0.00
  11/01/95-06/30/96        11.27        0.03            1.40         1.43       (0.04)       0.00          0.00
  10/31/95                 16.53        0.07           (4.55)       (4.48)      (0.06)       0.00         (0.72)
  10/31/94                 12.27       (0.01)           4.45         4.44        0.00        0.00         (0.18)
  06/01/93-10/31/93        10.00        0.03            2.52         2.55       (0.02)       0.00         (0.26)
 Administrative Class
  12/31/98 +               10.14        0.03 (a)       (1.72)(a)    (1.69)       0.00        0.00          0.00
  06/30/98                 13.95        0.09 (a)       (3.90)(a)    (3.81)       0.00        0.00          0.00
  06/30/97                 12.63        0.00 (a)        1.32 (a)     1.32        0.00        0.00          0.00
  11/01/95-06/30/96        11.24        0.02 (a)        1.40 (a)     1.42       (0.03)       0.00          0.00
  10/31/95                 16.95        0.00           (4.95)       (4.95)      (0.05)       0.00         (0.71)
International Developed
 Fund (i)
 Institutional Class
  12/31/98 +              $14.32      $(0.01)(a)      $(0.07)(a)   $(0.08)     $(0.05)     $ 0.00        $(0.15)
  06/30/98                 13.12        0.16 (a)        1.73 (a)     1.89       (0.11)       0.00         (0.58)
  06/30/97                 12.54        0.10 (a)        1.09 (a)     1.19        0.00        0.00         (0.61)
  11/01/95-06/30/96        11.74        0.72            0.72         1.44       (0.07)      (0.36)        (0.21)
  10/31/95                 11.86        0.10            0.30         0.40       (0.09)       0.00         (0.43)
  10/31/94                 10.69        0.09            1.15         1.24       (0.03)       0.00         (0.04)
  06/08/93-10/31/93        10.00        0.05            0.69         0.74       (0.04)       0.00         (0.01)
 Administrative Class
  12/31/98 +               14.30       (0.02)(a)       (0.08)(a)    (0.10)       0.00        0.00         (0.15)
  06/30/98                 13.05        0.17 (a)        1.69 (a)     1.86       (0.03)       0.00         (0.58)
  06/30/97                 12.51        0.06 (a)        1.09 (a)     1.15        0.00        0.00         (0.61)
  11/01/95-06/30/96        11.73        0.69 (a)        0.72 (a)     1.41       (0.07)      (0.35)        (0.21)
  11/30/94-10/31/95        11.21        0.02            1.01         1.03       (0.08)       0.00         (0.43)
International Fund
 Institutional Class
  09/30/98-12/31/98 +     $10.47      $(0.01)(a)      $ 1.73 (a)   $ 1.72      $ 0.00      $ 0.00        $(1.15)
 Administrative Class
  09/30/98-12/31/98 +      10.47       (0.01)(a)        1.69 (a)   $ 1.68        0.00        0.00         (1.15)
Capital Appreciation
 Fund
 Institutional Class
  12/31/98 +              $26.13      $ 0.09 (a)      $ 0.52 (a)   $ 0.61      $(0.15)     $ 0.00        $(1.65)
  06/30/98                 21.19        0.15 (a)        6.59 (a)     6.74       (0.12)       0.00         (1.68)
  06/30/97                 18.10        0.24            5.08         5.32       (0.10)       0.00         (2.13)
  11/01/95-06/30/96        16.94        0.35            1.99         2.34       (0.15)       0.00         (1.03)
  10/31/95                 13.34        0.18            3.60         3.78       (0.18)       0.00          0.00
  10/31/94                 13.50        0.14           (0.12)        0.02       (0.14)       0.00         (0.04)
  10/31/93                 11.27        0.11            2.73         2.84       (0.11)       0.00         (0.50)
  10/31/92                 11.02        0.14            1.05         1.19       (0.14)       0.00         (0.72)
  03/08/91-10/31/91        10.00        0.09            1.02         1.11       (0.09)       0.00          0.00
 Administrative Class
  12/31/98 +               25.99        0.06 (a)        0.52 (a)     0.58       (0.13)       0.00         (1.65)
  06/30/98                 21.16        0.10 (a)        6.55 (a)     6.65       (0.14)       0.00         (1.68)
  07/31/96-06/30/97        17.19        0.16            6.03         6.19       (0.09)       0.00         (2.13)
</TABLE>    
 
- --------
 +Unaudited
 *Annualized
 (a)Per share amounts based on average number of shares outstanding during the
    period.
 (i)Formerly the Blairlogie International Active Fund.
 
12
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
                        FINANCIAL HIGHLIGHTS (continued)
 
 
 
<TABLE>   
<CAPTION>
                                                                                                      Ratio of Net
Distributions                                                                              Ratio of    Investment
in Excess of   Distributions Tax Basis               Net Asset               Net Assets   Expenses to Income (Loss)
Net Realized       from      Return of     Total     Value End                 End of     Average Net  to Average     Portfolio
Capital Gains  Equalization   Capital  Distributions of Period Total Return Period (000s)   Assets     Net Assets   Turnover Rate
- ---------------------------------------------------------------------------------------------------------------------------------
<S>            <C>           <C>       <C>           <C>       <C>          <C>           <C>         <C>           <C>
    $0.00         $ 0.00       $0.00      $(0.04)     $ 8.46      (16.47)%    $ 19,017       1.40%*        1.09%*         23%
     0.00           0.00        0.00        0.00       10.18      (27.08)       24,251       1.39          0.52           52
     0.00           0.00        0.00       (0.06)      13.96       10.85        52,703       1.45          0.45           74
     0.00           0.00        0.00       (0.04)      12.66       12.70        80,545       1.35*         0.84*          74
     0.00           0.00        0.00       (0.78)      11.27      (27.70)       73,539       1.35          0.57          118
     0.00           0.00        0.00       (0.18)      16.53       36.31        79,620       1.35         (0.06)          79
     0.00           0.00        0.00       (0.28)      12.27       25.55        14,625       1.34*         0.64*          37
     0.00           0.00        0.00        0.00        8.45      (16.67)            2       1.64*         0.81*          23
     0.00           0.00        0.00        0.00       10.14      (27.31)        1,339       1.65          0.81           52
     0.00           0.00        0.00        0.00       13.95       10.45           117       1.69          0.02           74
     0.00           0.00        0.00       (0.03)      12.63       12.70           368       1.61*         0.18 *         74
     0.00           0.00        0.00       (0.76)      11.24      (27.96)          830       1.62          0.02          118
    $0.00         $ 0.00       $0.00      $(0.20)     $14.04       (0.49)%    $121,427       1.12%*       (0.10)%*        20%
     0.00           0.00        0.00       (0.69)      14.32       15.69       122,126       1.11          1.20           60
     0.00           0.00        0.00       (0.61)      13.12       10.07        94,044       1.13          0.85           77
     0.00           0.00        0.00       (0.64)      12.54       12.54        70,207       1.10*         0.81*          60
     0.00           0.00        0.00       (0.52)      11.74        3.83        63,607       1.10          1.10           63
     0.00           0.00        0.00       (0.07)      11.86       11.68        22,569       1.10          1.12           89
     0.00           0.00        0.00       (0.05)      10.69        7.39         8,299       1.10*         0.91*          20
     0.00           0.00        0.00       (0.15)      14.05       (0.67)           35       1.38*        (0.29)*         20
     0.00           0.00        0.00       (0.61)      14.30       15.33         6,299       1.36          1.31           60
     0.00           0.00        0.00       (0.61)      13.05        9.77         2,302       1.38          0.52           77
     0.00           0.00        0.00       (0.63)      12.51       12.33         5,624       1.35*         1.04*          60
     0.00           0.00        0.00       (0.51)      11.73        9.61           675       1.34*         0.50*          58
    $0.00         $ 0.00       $0.00      $(1.15)     $11.04       16.93%     $  1,168       1.27%*       (0.46)%*        17%
     0.00           0.00        0.00       (1.15)      11.00       16.54         9,978       1.39*        (0.48)*         17
    $0.00         $ 0.00       $0.00      $(1.80)     $24.94        2.74%     $712,374       0.71%*        0.74%*         62%
     0.00           0.00        0.00       (1.80)      26.13       32.97       805,856       0.71          0.64           75
     0.00           0.00        0.00       (2.23)      21.19       31.52       536,187       0.71          1.02           87
     0.00           0.00        0.00       (1.18)      18.10       14.65       348,728       0.70*         1.33*          73
     0.00           0.00        0.00       (0.18)      16.94       28.47       236,220       0.70          1.22           83
     0.00           0.00        0.00       (0.18)      13.34        0.15       165,441       0.70          1.17           77
     0.00           0.00        0.00       (0.61)      13.50       25.30        84,990       0.70          0.94           81
     0.00          (0.08)       0.00       (0.94)      11.27       10.75        36,334       0.70          1.13          134
     0.00           0.00        0.00       (0.09)      11.02       11.19        18,813       0.75*         1.55*          41
     0.00           0.00        0.00       (1.78)      24.79        2.64       203,574       0.95*         0.49*          62
     0.00           0.00        0.00       (1.82)      25.99       32.55       132,384       0.96          0.39           75
     0.00           0.00        0.00       (2.22)      21.16       38.26         3,115       0.96*         0.66*          87
</TABLE>    
                                                                   Prospectus
                                                                              13
<PAGE>
 
                        FINANCIAL HIGHLIGHTS (continued)
 
<TABLE>   
<CAPTION>
 
                       Net Asset                Net Realized/     Total    Dividends  Dividends in  Distributions
                         Value        Net         Unrealized   Income from  from Net  Excess of Net   from Net
                       Beginning  Investment    Gain (Loss) on Investment  Investment  Investment     Realized
                       of Period Income (Loss)   Investments   Operations    Income      Income     Capital Gains
- -----------------------------------------------------------------------------------------------------------------
<S>                    <C>       <C>            <C>            <C>         <C>        <C>           <C>
Mid-Cap Growth Fund
 Institutional Class
  12/31/98 +            $24.09      $ 0.05 (a)      $ 0.07 (a)   $ 0.12     $ (0.02)     $  0.00      $  (1.07)
  06/30/98               20.28        0.11 (a)        5.11 (a)     5.22       (0.07)       (0.01)        (1.33)
  06/30/97               19.44       (0.07)           5.25         5.18       (0.05)        0.00         (4.29)
  11/01/95-06/30/96      18.16        0.32            1.53         1.85       (0.14)        0.00         (0.43)
  10/31/95               13.97        0.07            4.19         4.26       (0.07)        0.00          0.00
  10/31/94               13.97        0.06            0.01         0.07       (0.06)        0.00         (0.01)
  10/31/93               11.29        0.07            2.70         2.77       (0.07)        0.00         (0.02)
  10/31/92               10.28        0.10            1.03         1.13       (0.10)        0.00          0.00
  08/26/91-10/31/91      10.00        0.02            0.27         0.29       (0.01)        0.00          0.00
 Administrative Class
  12/31/98 +             23.96        0.03 (a)        0.11 (a)     0.14       (0.01)        0.00         (1.07)
  06/30/98               20.24        0.05 (a)        5.08 (a)     5.13       (0.07)       (0.01)        (1.33)
  06/30/97               19.44       (0.13)           5.25         5.12       (0.03)        0.00         (4.29)
  11/01/95-06/30/96      18.17        0.28            1.53         1.81       (0.11)        0.00         (0.43)
  11/30/94-10/31/95      13.31        0.03            4.85         4.88       (0.02)        0.00          0.00
Small-Cap Growth Fund
 Institutional Class
  12/31/98 +            $14.01      $(0.01)(a)      $(1.88)(a)   $(1.89)    $  0.00      $  0.00      $  (0.47)
  06/30/98               13.40       (0.03)(a)        2.52 (a)     2.49        0.00         0.00         (1.88)
  06/30/97               20.83       (0.01)(a)        3.17 (a)     3.16        0.00         0.00        (10.59)
  11/01/95-06/30/96      21.02        2.02           (0.61)        1.41        0.00         0.00         (1.60)
  10/31/95               19.38       (0.05)           3.12         3.07        0.00         0.00         (1.43)
  10/31/94               19.15       (0.02)           0.89         0.87        0.00         0.00         (0.64)
  10/31/93               15.80       (0.06)           6.19         6.13        0.00         0.00         (2.78)
  10/31/92               14.87        0.01            1.50         1.51       (0.01)        0.00         (0.57)
  01/07/91-10/31/91      10.00        0.02            5.03         5.05       (0.02)        0.00         (0.16)
 Administrative Class
  12/31/98 +             13.97       (0.02)(a)       (1.89)(a)    (1.91)       0.00         0.00         (0.47)
  06/30/98               13.41        0.07 (a)        2.51 (a)     2.44        0.00         0.00         (1.88)
  06/30/97               20.82       (0.06)(a)        3.24 (a)     3.18        0.00         0.00        (10.59)
  11/01/95-06/30/96      21.01        2.02 (a)       (0.61)(a)     1.41        0.00         0.00         (1.60)
  09/27/95-10/31/95      21.90       (0.02)          (0.87)       (0.89)       0.00         0.00          0.00
Micro-Cap Growth Fund
 Institutional Class
  12/31/98 +            $23.66      $(0.06)(a)      $(3.09)(a)   $(3.15)    $  0.00      $  0.00      $  (0.63)
  06/30/98               19.85       (0.11)(a)        6.54 (a)     6.43        0.00         0.00         (2.62)
  06/30/97               18.47        0.00            3.41         3.41        0.00         0.00         (2.03)
  11/01/95-06/30/96      15.38        0.00            3.43         3.43        0.00         0.00         (0.34)
  10/31/95               11.87       (0.04)           3.55         3.51        0.00         0.00          0.00
  10/31/94               11.06       (0.03)           0.84         0.81        0.00         0.00          0.00
  06/25/93-10/31/93      10.00        0.00            1.07         1.07        0.00         0.00          0.00
 Administrative Class
  12/31/98 +             23.52       (0.09)(a)       (3.07)(a)    (3.16)       0.00         0.00         (0.63)
  06/30/98               19.78       (0.17)(a)        6.53 (a)     6.36        0.00         0.00         (2.62)
  06/30/97               18.46       (0.06)           3.41         3.35        0.00         0.00         (2.03)
  04/01/96-06/30/96      16.73        0.03            1.70         1.73        0.00         0.00          0.00
Renaissance Fund
 Institutional Class
  12/31/98 +            $19.07      $ 0.03 (a)      $(0.41)(a)   $(0.38)    $  0.00      $  0.00      $  (2.33)
  12/30/97-06/30/98      16.73        0.05            2.29         2.34        0.00         0.00          0.00
 Administrative Class
  08/31/98-12/31/98 +    15.37        0.03 (a)        3.28 (a)     3.31        0.00         0.00         (2.33)
Core Equity Fund
 Institutional Class
  12/31/98 +            $20.39      $ 0.01 (a)      $ 2.11 (a)   $ 2.12     $  0.00      $  0.00      $  (0.73)
  06/30/98               15.55        0.03 (a)        6.11 (a)     6.14        0.00         0.00         (1.30)
  06/30/97               13.55        0.03 (a)        2.78 (a)     2.81       (0.02)        0.00         (0.79)
  11/01/95-06/30/96      12.72        0.51            0.65         1.16       (0.04)       (0.01)        (0.28)
  12/28/94-10/31/95      10.00        0.07            2.71         2.78       (0.06)        0.00          0.00
 Administrative Class
  12/31/98 +             20.32       (0.02)(a)        2.06 (a)     2.04        0.00         0.00         (0.73)
  06/30/98               15.53        0.01 (a)        6.10 (a)     6.09        0.00         0.00         (1.30)
  06/30/97               13.56        0.00 (a)        2.77 (a)     2.77       (0.01)        0.00         (0.79)
  11/01/95-06/30/96      12.73        0.49            0.65         1.14       (0.02)       (0.01)        (0.28)
  05/31/95-10/31/95      11.45        0.02            1.28         1.30       (0.02)        0.00          0.00
</TABLE>    
- --------
   
 +Unaudited     
 *Annualized
 (a)Per share amounts based on average number of shares outstanding during the
   period.
 
14
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
                        FINANCIAL HIGHLIGHTS (continued)
 
<TABLE>   
<CAPTION>
                                                                                                      Ratio of Net
Distributions                                                                              Ratio of    Investment
in Excess of   Distributions Tax Basis               Net Asset               Net Assets   Expenses to Income (Loss)
Net Realized       from      Return of     Total     Value End                 End of     Average Net  to Average     Portfolio
Capital Gains  Equalization   Capital  Distributions of Period Total Return Period (000s)   Assets     Net Assets   Turnover Rate
- ---------------------------------------------------------------------------------------------------------------------------------
<S>            <C>           <C>       <C>           <C>       <C>          <C>           <C>         <C>           <C>
    $0.00         $ 0.00      $ 0.00      $ (1.09)    $23.12        0.81%     $518,586       0.71%*        0.49%*         45%
     0.00           0.00        0.00        (1.41)     24.09       26.16       437,985       0.71          0.46           66
     0.00           0.00        0.00        (4.34)     20.28       30.58       291,374       0.71          0.53           82
     0.00           0.00        0.00        (0.57)     19.44       10.37       231,011       0.70*         1.11*          79
     0.00           0.00        0.00        (0.07)     18.16       30.54       189,320       0.70          0.43           78
     0.00           0.00        0.00        (0.07)     13.97        0.58       121,791       0.70          0.45           61
     0.00           0.00        0.00        (0.09)     13.97       24.57        67,625       0.70          0.56           98
     0.00          (0.02)       0.00        (0.12)     11.29       10.91        21,213       0.70          0.87           66
     0.00           0.00        0.00        (0.01)     10.28        2.98         2,748       0.82*         0.92*          13
     0.00           0.00        0.00        (1.08)     23.02        0.93       107,131       0.96*         0.24*          45
     0.00           0.00        0.00        (1.41)     23.96       25.75        73,614       0.95          0.22           66
     0.00           0.00        0.00        (4.32)     20.24       30.23         2,066       0.96          0.28           82
     0.00           0.00        0.00        (0.54)     19.44       10.17         1,071       0.95*         0.89*          79
     0.00           0.00        0.00        (0.02)     18.17       36.64           892       0.94*         0.23*          72
    $0.00         $ 0.00      $ 0.00      $ (0.47)    $11.65      (13.21)%    $ 59,907       1.26%*       (0.09)%         48%
     0.00           0.00        0.00        (1.88)     14.01       19.33        47,641       1.26         (0.20)          77
     0.00           0.00        0.00       (10.59)     13.40       22.82        33,390       1.32         (0.05)         129
     0.00           0.00        0.00        (1.60)     20.83        7.22        32,954       1.25*        (0.20)*         59
     0.00           0.00        0.00        (1.43)     21.02       17.39        73,977       1.25         (0.27)          86
     0.00           0.00        0.00        (0.64)     19.38        4.62        50,425       1.25         (0.33)          66
     0.00           0.00        0.00        (2.78)     19.15       38.80        43,308       1.25         (0.35)          62
     0.00           0.00        0.00        (0.58)     15.80       10.20        33,734       1.25          0.09           66
     0.00           0.00        0.00        (0.18)     14.87       50.68        33,168       1.29*         0.11*          48
     0.00           0.00        0.00        (0.47)     11.59      (13.39)        1,383       1.51*        (0.34)*         48
     0.00           0.00        0.00        (1.88)     13.97       18.90           981       1.49         (0.51)          77
     0.00           0.00        0.00       (10.59)     13.41       23.12             1       1.54         (0.36)         129
     0.00           0.00        0.00        (1.60)     20.82        7.18           112       1.50*        (0.41)*         59
     0.00           0.00        0.00         0.00      21.01       (5.34)          544       1.60*        (0.82)*          9
    $0.00         $ 0.00      $ 0.00      $ (0.63)    $19.88      (13.18)%    $258,983       1.51%*       (0.64)%*        37%
     0.00           0.00        0.00        (2.62)     23.66       33.95       257,842       1.51         (0.50)          72
     0.00           0.00        0.00        (2.03)     19.85       20.05       164,139       1.52         (0.49)          84
     0.00           0.00        0.00        (0.34)     18.47       22.64        83,973       1.50*        (0.45)*         54
     0.00           0.00        0.00         0.00      15.38       29.54        69,775       1.50         (0.37)          87
     0.00           0.00        0.00         0.00      11.87        7.31        32,605       1.50         (0.25)          59
     0.00           0.00       (0.01)       (0.01)     11.06       10.81        10,827       1.50*        (0.02)*         16
     0.00           0.00        0.00        (0.63)     19.73      (13.30)        2,709       1.76*        (0.90)*         37
     0.00           0.00        0.00        (2.62)     23.52       33.70         4,779       1.76         (0.74)          72
     0.00           0.00        0.00        (2.03)     19.78       19.72         2,116       1.77         (0.74)          84
     0.00           0.00        0.00         0.00      18.46       10.34           566       1.73*        (0.74)*         54
    $0.00         $ 0.00      $ 0.00      $ (2.33)    $16.36       (1.07)%    $     77       0.86%*        0.40%*        104%
     0.00           0.00        0.00         0.00      19.07       13.99           851       0.86*         0.55*         192
     0.00           0.00        0.00        (2.33)     16.35       22.91           261       1.02*         0.58*         104
    $0.00         $ 0.00      $ 0.00      $ (0.73)    $21.78       10.69%     $  1,775       0.83%*        0.06%*         50%
     0.00           0.00        0.00        (1.30)     20.39       41.83         1,915       0.83          0.20          120
     0.00           0.00        0.00        (0.81)     15.55       21.59         6,444       0.87          0.23          139
     0.00           0.00        0.00        (0.33)     13.55        9.41        10,452       0.82*         0.53*          73
     0.00           0.00        0.00        (0.06)     12.72       27.86         7,791       0.82*         0.79*         123
     0.00           0.00        0.00        (0.73)     21.63       10.33       168,569       1.08*        (0.19)*         50
     0.00           0.00        0.00        (1.30)     20.32       41.54       128,666       1.08         (0.07)         120
     0.00           0.00        0.00        (0.80)     15.53       21.20        29,332       1.13         (0.03)         139
     0.00           0.00        0.00        (0.31)     13.56        9.23        33,575       1.07*         0.28 *         73
     0.00           0.00        0.00        (0.02)     12.73       11.34        24,645       1.06*         0.34 *         58
</TABLE>    
                                                                   Prospectus
                                                                              15
<PAGE>
 
                        FINANCIAL HIGHLIGHTS (continued)
 
<TABLE>   
<CAPTION>
 
                      Net Asset                Net Realized/     Total    Dividends  Dividends in  Distributions
                        Value        Net         Unrealized   Income from  from Net  Excess of Net   from Net
                      Beginning  Investment    Gain (Loss) on Investment  Investment  Investment     Realized
                      of Period Income (Loss)   Investments   Operations    Income      Income     Capital Gains
- ----------------------------------------------------------------------------------------------------------------
<S>                   <C>       <C>            <C>            <C>         <C>        <C>           <C>
Mid-Cap Equity Fund
 Institutional Class
  12/31/98 +           $13.53      $(0.01)(a)      $ 1.03 (a)   $ 1.02      $ 0.00       $0.00        $(0.65)
  06/30/98              14.04       (0.03)(a)        3.61 (a)     3.58        0.00        0.00         (4.09)
  06/30/97              14.66       (0.06)(a)        1.31 (a)     1.25        0.00        0.00         (1.87)
  11/01/95-06/30/96     12.92        0.49            1.62         2.11        0.00        0.00         (0.37)
  12/28/94-10/31/95     10.00        0.02            2.92         2.94       (0.02)       0.00          0.00
 Administrative Class
  12/31/98 +            13.50       (0.02)(a)        1.02 (a)     1.00        0.00        0.00         (0.65)
  08/21/97-06/30/98     15.27       (0.05)(a)        2.37 (a)     2.32        0.00        0.00         (4.09)
International Growth
 Fund
 Institutional Class
  12/31/98 +           $13.55      $(0.03)(a)      $ 0.36 (a)   $ 0.33      $(0.02)      $0.00        $(1.03)
  12/31/97-06/30/98     10.00        0.00 (a)        3.55 (a)     3.55        0.00        0.00          0.00
Equity Income Fund
 Institutional Class
  12/31/98 +           $16.09      $ 0.22 (a)      $(0.04)(a)   $ 0.18      $(0.20)      $0.00        $(1.76)
  06/30/98              15.41        0.44 (a)        2.75 (a)     3.19       (0.42)       0.00         (2.09)
  06/30/97              14.36        0.40            3.17         3.57       (0.55)       0.00         (1.97)
  11/01/95-06/30/96     13.09        0.78            1.31         2.09       (0.34)       0.00         (0.48)
  10/31/95              11.75        0.46            1.67         2.13       (0.46)       0.00         (0.33)
  10/31/94              11.95        0.42           (0.16)        0.26       (0.42)       0.00         (0.04)
  10/31/93              10.92        0.40            1.40         1.80       (0.40)       0.00         (0.37)
  10/31/92              10.77        0.45            0.93         1.38       (0.43)       0.00         (0.57)
  03/08/91-10/31/91     10.00        0.24            0.92         1.16       (0.24)       0.00         (0.15)
 Administrative Class
  12/31/98 +            16.08        0.20 (a)       (0.03)(a)     0.17       (0.19)       0.00         (1.76)
  06/30/98              15.40        0.40 (a)        2.75 (a)     3.15       (0.38)       0.00         (2.09)
  06/30/97              14.35        0.27            3.26         3.53       (0.51)       0.00         (1.97)
  11/01/95-06/30/96     13.13        0.75            1.31         2.06       (0.36)       0.00         (0.48)
  11/30/94-10/31/95     11.12        0.39            2.35         2.74       (0.40)       0.00         (0.33)
Value Fund (ii)
 Institutional Class
  12/31/98 +           $15.66      $ 0.14 (a)      $ 0.05 (a)   $ 0.19      $(0.13)       0.00        $(1.72)
  06/30/98              14.81        0.25 (a)        2.47 (a)     2.72       (0.24)       0.00         (1.63)
  06/30/97              12.46        1.05            2.11         3.16       (0.31)       0.00         (0.50)
  11/01/95-06/30/96     12.53        0.25            1.62         1.87       (0.17)       0.00         (1.77)
  10/31/95              11.55        0.30            2.18         2.48       (0.30)       0.00         (1.20)
  10/31/94              11.92        0.30           (0.28)        0.02       (0.29)       0.00         (0.10)
  10/31/93              10.05        0.28            2.36         2.64       (0.28)       0.00         (0.49)
  12/30/91-10/31/92     10.00        0.24            0.23         0.47       (0.24)       0.00         (0.18)
 Administrative Class
  12/31/98 +            15.65        0.12 (a)        0.03 (a)     0.15       (0.11)       0.00         (1.72)
  08/21/97-06/30/98     15.66        0.19 (a)        1.65 (a)     1.84       (0.22)       0.00         (1.63)
Value 25 Fund
 Institutional Class
  07/10/98-12/31/98 +  $10.00      $(0.16)(a)      $(1.35)(a)   $(1.51)     $ 0.00       $0.00        $ 0.00
Small-Cap Value Fund
 Institutional Class
  12/31/98 +           $17.68      $00.15 (a)      $(1.83)(a)   $(1.68)     $(0.21)      $0.00        $(0.45)
  06/30/98              15.78        0.29 (a)        2.50 (a)     2.79       (0.13)       0.00         (0.76)
  06/30/97              14.20        0.46            3.63         4.09       (0.13)       0.00         (2.38)
  11/01/95-06/30/96     13.10        0.56            1.49         2.05       (0.21)       0.00         (0.74)
  10/31/95              12.07        0.28            1.92         2.20       (0.28)       0.00         (0.89)
  10/31/94              12.81        0.29           (0.65)       (0.36)      (0.29)       0.00         (0.09)
  10/31/93              10.98        0.24            2.33         2.57       (0.24)       0.00         (0.50)
  10/31/92              10.09        0.22            1.17         1.39       (0.22)       0.00         (0.24)
  10/01/91-10/31/91     10.00        0.02            0.10         0.12       (0.03)       0.00          0.00
 Administrative Class
  12/31/98 +            17.63        0.14 (a)       (1.83)(a)    (1.69)      (0.20)       0.00         (0.45)
  06/30/98              15.76        0.25 (a)        2.49 (a)     2.74       (0.11)       0.00         (0.76)
  06/30/97              14.20        0.38            3.68         4.06       (0.12)       0.00         (2.38)
  11/01/95-06/30/96     13.16        0.54            1.43         1.97       (0.19)       0.00         (0.74)
</TABLE>    
- --------
    
 *Unaudited     
    
 +Annualized     
 (a)Per share amounts based on average number of shares outstanding during the
    period.
 (ii)Formerly the NFJ Diversified Low P/E Fund.
 
16
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
                        FINANCIAL HIGHLIGHTS (continued)
 
<TABLE>   
<CAPTION>
                                                                                                      Ratio of Net
Distributions                                                                              Ratio of    Investment
in Excess of   Distributions Tax Basis               Net Asset               Net Assets   Expenses to Income (Loss)
Net Realized       from      Return of     Total     Value End                 End of     Average Net  to Average     Portfolio
Capital Gains  Equalization   Capital  Distributions of Period Total Return Period (000s)   Assets     Net Assets   Turnover Rate
- ---------------------------------------------------------------------------------------------------------------------------------
<S>            <C>           <C>       <C>           <C>       <C>          <C>           <C>         <C>           <C>
    $0.00         $ 0.00       $0.00      $(0.65)     $13.90        8.10%     $  9,254       0.89%*       (0.09)%*       136%
     0.00           0.00        0.00       (4.09)      13.53       30.40         8,488       0.89         (0.25)         268
     0.00           0.00        0.00       (1.87)      14.04        9.61         7,591       1.15         (0.43)         202
     0.00           0.00        0.00       (0.37)      14.66       16.72         8,378       0.88*        (0.32)*         97
     0.00           0.00        0.00       (0.02)      12.92       29.34         8,357       0.88*         0.24*         132
     0.00           0.00        0.00       (0.65)      13.85        7.97         3,924       1.14*        (0.34)*        136
     0.00           0.00        0.00       (4.09)      13.50       19.65         2,371       1.13*        (0.49)*        268
    $0.00         $ 0.00       $0.00      $(1.05)     $12.83        2.88%     $  6,464       1.42%*       (0.53)%*       115%
     0.00           0.00        0.00        0.00       13.55       35.50         6,822       1.36*         0.08*          60
    $0.00         $ 0.00       $0.00      $(1.96)     $14.31        1.51 %    $131,474       0.71%*        2.86%*         38%
     0.00           0.00        0.00       (2.51)      16.09       21.84       138,650       0.71          2.71           45
     0.00           0.00        0.00       (2.52)      15.41       27.67       121,138       0.72          3.03           45
     0.00           0.00        0.00       (0.82)      14.36       16.35       116,714       0.70*         3.41 *         52
     0.00           0.00        0.00       (0.79)      13.09       19.36       118,015       0.70          3.83           46
     0.00           0.00        0.00       (0.46)      11.75        2.25        92,365       0.70          3.77           36
     0.00           0.00        0.00       (0.77)      11.95       16.65        67,854       0.70          3.55           39
     0.00          (0.23)       0.00       (1.23)      10.92       12.89        30,506       0.70          3.83           47
     0.00           0.00        0.00       (0.39)      10.77       11.81        15,628       0.74*         4.18*          62
     0.00           0.00        0.00       (1.95)      14.30        1.39        10,733       0.96*         2.59*          38
     0.00           0.00        0.00       (2.47)      16.08       21.58        11,699       0.96          2.45           45
     0.00           0.00        0.00       (2.48)      15.40       27.40         8,145       0.97          2.79           45
     0.00           0.00        0.00       (0.84)      14.35       16.08         6,097       0.95*         3.19 *         52
     0.00           0.00        0.00       (0.73)      13.13       25.69           140       0.95*         3.43 *         43
    $0.00         $ 0.00       $0.00      $(1.85)     $14.00        1.69%     $ 90,942       0.71%*        1.85%*         47%
     0.00           0.00        0.00       (1.87)      15.66       19.35        83,219       0.71          1.59           77
     0.00           0.00        0.00       (0.81)      14.81       26.38        74,613       0.73          2.02           71
     0.00           0.00        0.00       (1.94)      12.46       16.24        52,727       0.70*         2.40*          29
     0.00           0.00        0.00       (1.50)      12.53       24.98        14,443       0.70          2.50           71
     0.00           0.00        0.00       (0.39)      11.55        0.15        15,442       0.70          2.34           44
     0.00           0.00        0.00       (0.77)      11.92       26.35        22,930       0.70          2.43           28
     0.00           0.00        0.00       (0.42)      10.05        4.68        18,083       0.70*         2.57*          73
     0.00           0.00        0.00       (1.83)      13.97        1.46        15,735       0.96*         1.62*          47
     0.00           0.00        0.00       (1.85)      15.65       12.71        10,349       0.96*         1.40*          77
    $0.00         $ 0.00       $0.00      $ 0.00      $ 8.49      (14.51)%    $    160       0.75%*       (3.97)%*        35%
    $0.00         $ 0.00       $0.00      $(0.66)     $15.34       (9.31)%    $ 59,431       0.86%*        1.99%*         24%
     0.00           0.00        0.00       (0.89)      17.68       17.77        47,432       0.85          1.65           41
     0.00           0.00        0.00       (2.51)      15.78       31.99        34,639       0.90          1.92           48
     0.00           0.00        0.00       (0.95)      14.20       16.35        29,017       0.85*         2.12*          35
     0.00           0.00        0.00       (1.17)      13.10       19.88        35,093       0.85          2.25           50
     0.00           0.00        0.00       (0.38)      12.07       (2.89)       31,236       0.85          2.23           48
     0.00           0.00        0.00       (0.74)      12.81       23.60        46,523       0.85          2.05           42
     0.00          (0.04)       0.00       (0.50)      10.98       13.75        18,261       0.85          2.16           27
     0.00           0.00        0.00       (0.03)      10.09        1.19         5,060       1.09*         3.06*           0
     0.00           0.00        0.00       (0.65)      15.29       (9.43)       19,175       1.10*         1.78*          24
     0.00           0.00        0.00       (0.87)      17.63       17.41        10,751       1.10          1.39           41
     0.00           0.00        0.00       (2.50)      15.76       31.70         5,916       1.16          1.68           48
     0.00           0.00        0.00       (0.93)      14.20       15.64         4,433       1.10*         1.86*          35
</TABLE>    
                                                                   Prospectus
                                                                              17
<PAGE>
 
                       FINANCIAL HIGHLIGHTS (continued)
 
<TABLE>   
<CAPTION>
 
                          Net Asset               Net Realized/     Total    Dividends  Dividends in  Distributions
                            Value        Net        Unrealized   Income from  from Net  Excess of Net   from Net
                          Beginning  Investment   Gain (Loss) on Investment  Investment  Investment     Realized
                          of Period Income (Loss)  Investments   Operations    Income      Income     Capital Gains
- -------------------------------------------------------------------------------------------------------------------
<S>                       <C>       <C>           <C>            <C>         <C>        <C>           <C>
Enhanced Equity Fund
 Institutional Class
  12/31/98 +               $12.64       $0.04 (a)     $ 0.68 (a)   $ 0.72      $(0.06)      $0.00        $(1.61)
  06/30/98                  16.46        0.11 (a)       3.91 (a)     4.02       (0.11)       0.00         (7.73)
  06/30/97                  15.91        1.18           3.10         4.28       (0.10)       0.00         (3.63)
  11/01/95-06/30/96         14.44        0.34           1.67         2.01       (0.16)       0.00         (0.38)
  10/31/95                  11.99        0.25           2.62         2.87       (0.25)       0.00         (0.17)
  10/31/94                  12.08        0.25          (0.04)        0.21       (0.25)       0.00         (0.05)
  10/31/93                  11.76        0.23           0.74         0.97       (0.23)       0.00         (0.42)
  10/31/92                  10.80        0.16           1.06         1.22       (0.16)       0.00         (0.04)
  02/11/91-10/31/91         10.00        0.16           0.80         0.96       (0.16)       0.00          0.00
 Administrative Class
  12/31/98 +                12.59        0.03 (a)       0.68 (a)     0.71       (0.06)       0.00         (1.61)
  08/21/97-06/30/98         17.53        0.05 (a)       2.85 (a)     2.90       (0.11)       0.00         (7.73)
Tax-Efficient Equity
 Fund
 Administrative Class
  09/30/98-12/31/98 +      $ 8.65       $0.03 (a)     $ 1.85 (a)   $ 1.88      $ 0.00       $0.00        $ 0.00
Structured Emerging
 Markets Fund
 Institutional Class
  12/31/98 +               $10.00       $0.07 (a)     $(0.77)(a)   $(0.70)     $(0.07)      $0.00        $(0.28)
Tax-Efficient Structured
 Emerging Markets Fund
 Institutional Class
  12/31/98 +               $10.00       $0.07 (a)     $(0.61)(a)   $(0.54)     $(0.06)      $0.00        $ 0.00
Balanced Fund (iii)
 Institutional Class
  12/31/98 +               $12.15       $0.21 (a)     $ 0.11 (a)   $ 0.32      $(0.14)      $0.00        $(1.64)
  06/30/98                  11.42        0.35 (a)       1.81 (a)     2.16       (0.34)       0.00         (1.09)
  06/30/97                  11.64        0.89           1.21         2.10       (0.36)       0.00         (1.96)
  11/01/95-06/30/96         11.89        0.27           0.76         1.03       (0.27)       0.00         (1.01)
  10/31/95                  10.35        0.44           1.54         1.98       (0.44)       0.00          0.00
  10/31/94                  10.84        0.34          (0.34)        0.00       (0.34)       0.00         (0.15)
  10/31/93                  10.42        0.35           0.68         1.03       (0.35)       0.00         (0.26)
  06/25/92-10/31/92         10.00        0.12           0.52         0.64       (0.12)       0.00         (0.10)
</TABLE>    
- --------
    
 +Unaudited     
 *Annualized
 (a)Per share amounts based on average number of shares outstanding during the
    period.
    
 (iii) NFJ and Cadence began serving as Sub-Advisers of the portion of the
       Balanced Fund allocated for investment in common stocks on August 1,
       1996. Prior to August 1, 1996, a different firm served as sub-adviser.
           
18
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
                        FINANCIAL HIGHLIGHTS (continued)
 
<TABLE>   
<CAPTION>
                                                                                                      Ratio of Net
Distributions                                                                              Ratio of    Investment
in Excess of   Distributions Tax Basis               Net Asset               Net Assets   Expenses to Income (Loss)
Net Realized       from      Return of     Total     Value End                 End of     Average Net  to Average     Portfolio
Capital Gains  Equalization   Capital  Distributions of Period Total Return Period (000s)   Assets     Net Assets   Turnover Rate
- ---------------------------------------------------------------------------------------------------------------------------------
<S>            <C>           <C>       <C>           <C>       <C>          <C>           <C>         <C>           <C>
    $0.00         $ 0.00       $0.00      $(1.67)     $11.69       6.39%      $ 37,868       0.71%*       0.70%*          24%
     0.00           0.00        0.00       (7.84)      12.64      32.33         36,584       0.71         0.63            65
     0.00           0.00        0.00       (3.73)      16.46      31.45         44,838       0.74         1.31            91
     0.00           0.00        0.00       (0.54)      15.91      14.21         83,425       0.70*        1.58*           53
     0.00           0.00        0.00       (0.42)      14.44      24.46         73,999       0.70         1.91            21
     0.00           0.00        0.00       (0.30)      11.99       1.83         65,915       0.70         2.20            44
     0.00           0.00        0.00       (0.65)      12.08       8.20         46,724       0.70         1.89            15
     0.00          (0.06)       0.00       (0.26)      11.76      11.46         36,515       0.70         1.81            17
     0.00           0.00        0.00       (0.16)      10.80       9.59          4,451       0.73*        2.14*            0
     0.00           0.00        0.00       (1.67)      11.63       6.30         16,672       0.96*        0.45*           24
     0.00           0.00        0.00       (7.84)      12.59      23.85         10,409       0.95*        0.47*           65
    $0.00         $ 0.00       $0.00      $ 0.00      $10.53      21.79%      $    392       0.87%*       1.23%*           8%
    $0.00         $ 0.00       $0.00      $(0.35)     $ 8.95      (7.04)%     $ 33,058       0.95%*       1.64%*          15%
    $0.00         $ 0.00       $0.00      $(0.06)     $ 9.40      (5.37)%     $ 45,649       0.96%*       1.52%*          19%
    $0.00         $ 0.00       $0.00      $(1.78)     $10.69       3.17%      $ 38,014       0.71%        3.69%*         100%
     0.00           0.00        0.00       (1.43)      12.15      19.91         41,222       0.72         2.91           186
     0.00           0.00        0.00       (2.32)      11.42      20.37         61,518       0.74         3.33           199
     0.00           0.00        0.00       (1.28)      11.64       9.07         82,562       0.70*        3.46*          140
     0.00           0.00        0.00       (0.44)      11.89      19.47         72,638       0.70         3.73            43
     0.00           0.00        0.00       (0.49)      10.35       0.08        130,694       0.70         3.25            47
     0.00           0.00        0.00       (0.61)      10.84      10.06        126,410       0.70         3.10            19
     0.00           0.00        0.00       (0.22)      10.42       6.40         99,198       0.70*        3.36*           39
</TABLE>    
                                                                   Prospectus
                                                                              19
<PAGE>
 
                       INVESTMENT OBJECTIVES AND POLICIES
   
  The investment objective and general investment policies of each Fund are
described below. There can be no assurance that the investment objective of any
Fund will be achieved. Because the market value of each Fund's investments will
change, the net asset value per share of each Fund also will vary. Specific
portfolio securities eligible for purchase by the Funds, investment techniques
that may be used by the Funds, and the risks associated with these securities
and techniques are described more fully under "Characteristics and Risks of
Securities and Investment Techniques" in this Prospectus and "Investment
Objectives and Policies" in the Statement of Additional Information. For
information on other investment policies of the Stock Funds, see "Investment
Objectives and Policies--Stock Funds." This information is also relevant to an
investment in the Balanced Fund because the Common Stock Segment (as described
below) of that Fund is managed in accordance with the investment policies of
the Capital Appreciation and Value Funds.     
   
  Emerging Markets Fund seeks long-term growth of capital. The Fund invests
primarily in common stocks of companies located in countries identified as
emerging market countries. The Morgan Stanley Capital International Emerging
Markets Free Index ("MSCI Free Index") and the International Finance
Corporation Emerging Markets Index ("IFC Index") are used as the bases for
choosing the countries in which the Fund invests. However, the Fund is not
limited to the countries and weightings of these indexes. The Sub-Adviser
applies two levels of screening in selecting investments for the Fund. First,
an active country selection model analyzes world markets and assigns a relative
value ranking, or "favorability weighting," to each country in the relevant
country universe to determine markets which are relatively undervalued. Second,
at the stock selection level, quality analysis and value analysis are applied
to each security, assessing variables such as balance sheet strength and
earnings growth (quality factors), and performance relative to the industry,
price to earnings ratios, and price to book ratios (value factors). This two-
level screening method identifies undervalued securities for purchase as well
as provides a sell discipline for fully valued securities. In selecting
securities, the Sub-Adviser considers, to the extent practicable and on the
basis of information available to it for research, a company's environmental
business practices.     
 
  For purposes of implementing its investment objective, the Fund invests
primarily in some or all of the following emerging market countries (this list
is not exclusive):
 
  Argentina             Hungary             Peru                 Sri Lanka
  Brazil                India               Philippines          Taiwan
  Chile                 Indonesia           Poland               Thailand
  China                 Israel              Portugal             Turkey
  Colombia              Jordan              Romania              Venezuela
  Czech                 Malaysia            Russia               Zimbabwe
  Republic              Mexico              South Africa
  Greece                Pakistan            South Korea
  Hong Kong
 
  For purposes of allocating the Fund's investments, a company is considered to
be located in the country in which it is domiciled, in which it is primarily
traded, from which it derives a significant portion of its revenues, or in
which a significant portion of its goods or services are produced.
 
  Most of the foreign securities in which the Fund invests will be denominated
in foreign currencies. The Fund may engage in foreign currency transactions to
protect itself against fluctuations in currency exchange rates in relation to
 
20
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
the U.S. dollar or to the weighting of a particular foreign currency on the
MSCI Free Index or the IFC Index. Such foreign currency transactions may
include forward foreign currency contracts, foreign exchange futures contracts,
and options thereon, currency exchange transactions on a spot (i.e., cash)
basis, and put and call options on foreign currencies. Up to 10% of the Fund's
assets may be invested in the securities of other investment companies. The
Fund may sell (write) call and put options. The Fund may utilize stock index
futures contracts and options thereon for hedging purposes and also for
investment purposes. For instance, the Fund may invest in stock index futures
contracts and related options as an alternative to purchasing individual stocks
to adjust its exposure to a particular foreign market. See "Characteristics and
Risks of Securities and Investment Techniques--Derivative Instruments--Index
Futures." The Fund may also engage in equity index swap transactions.
   
  Investing in the securities of foreign issuers, and particularly emerging
market issuers, involves special risks and considerations not typically
associated with investing in U.S. companies. For a discussion of such risks,
see "Characteristics and Risks of Securities and Investment Techniques--Foreign
Securities." Currently, the Portfolio Manager for the Emerging Markets Fund is
James Smith of Blairlogie. It is anticipated that the Emerging Markets Fund
will reorganize as a series of another mutual fund family on or about April 30,
1999, and thereafter would not be offered as a series of the Trust. See
"Management of the Trust--Sub-Advisers--Blairlogie."     
   
  International Developed Fund seeks long-term growth of capital. The Fund
invests primarily in a diversified portfolio of international equity
securities. The Morgan Stanley Capital International EAFE (Europe, Australasia,
Far East) Index ("EAFE Index") is used as a basis for choosing the countries in
which the Fund invests. However, the Fund is not limited to the countries and
weightings of the EAFE Index. Under normal market conditions, the Fund will
invest no more than 35% of its assets in securities issued by companies located
in countries that the Sub-Adviser determines, on the basis of market
capitalization, liquidity, and other considerations, to have underdeveloped
securities markets. The Sub-Adviser applies two levels of screening in
selecting investments for the Fund. First, an active country selection model
analyzes world markets and assigns a relative value ranking, or "favorability
weighting," to each country in the relevant country universe to determine
markets which are relatively undervalued. Second, at the stock selection level,
quality analysis and value analysis are applied to each security, assessing
variables such as balance sheet strength and earnings growth (quality factors)
and performance relative to the industry, price to earnings ratios, and price
to book ratios (value factors). This two-level screening method identifies
undervalued securities for purchase and also provides a sell discipline for
fully valued securities. In selecting securities, the Sub-Adviser considers, to
the extent practicable and on the basis of information available to it for
research, a company's environmental business practices.     
 
  For purposes of allocating the Fund's investments, a company is considered to
be located in the country in which it is domiciled, in which it is primarily
traded, from which it derives a significant portion of its revenues, or in
which a significant portion of its goods or services are produced.
 
  Most of the international equity securities in which the Fund invests will be
traded in foreign currencies. The Fund may engage in foreign currency
transactions to protect itself against fluctuations in currency exchange rates
in relation to the U.S. dollar or to the weighting of a particular foreign
currency on the EAFE Index. Such foreign currency transactions may include
forward foreign currency contracts, foreign exchange futures contracts, and
options thereon, currency exchange transactions on a spot (i.e., cash) basis,
and put and call options on foreign currencies. Up to 10% of the Fund's assets
may be invested in the securities of other investment companies. The Fund may
sell (write) call and put options. The Fund may utilize stock index futures
contracts and options thereon for hedging purposes and also for investment
purposes. For instance, the Fund may invest in stock index futures contracts
and related options as
                                                                   Prospectus
                                                                              21
<PAGE>
 
an alternative to purchasing individual stocks to adjust its exposure to a
particular foreign market. See "Characteristics and Risks of Securities and
Investment Techniques--Derivative Instruments--Index Futures." The Fund may
also engage in equity index swap transactions.
   
  Investing in the securities of foreign issuers involves special risks and
considerations not typically associated with investing in U.S. companies. For
a discussion of such risks, see "Characteristics and Risks of Securities and
Investment Techniques--Foreign Securities." Currently, the Portfolio Manager
for the International Developed Fund is James Smith of Blairlogie. It is
anticipated that the International Developed Fund will reorganize as a series
of another mutual fund family on or about April 30, 1999, and thereafter would
not be offered as a series of the Trust. See "Management of the Trust--Sub-
Advisers--Blairlogie."     
 
  International Fund seeks capital appreciation through investments in an
international portfolio. Income is an incidental consideration. Under normal
market conditions, at least 65% of the International Fund's total assets will
be invested in common stocks, which may or may not pay dividends, as well as
convertible bonds, convertible preferred stocks, warrants, rights or other
equity securities, for a combination of capital appreciation and income.
Convertible securities may include securities convertible only by certain
classes of investors (which may not include the Fund). The Fund may not invest
in convertible securities which are of less than investment grade quality at
the time of purchase.
   
  The Fund will normally invest in securities traded in developed foreign
securities markets. Particular consideration is given to investments
principally traded in developed North American (other than United States),
Japanese, European, Pacific and Australian securities markets, and in
securities of foreign issuers traded on United States securities markets. The
Fund will also invest in emerging markets, where markets may not yet fully
reflect the potential of the developing economy. There are no prescribed
limits on geographic asset distribution and the Fund has the authority to
invest in securities traded in securities markets of any country in the world.
In allocating the Fund's assets among the various securities markets of any
country in the world, the Sub-Adviser will consider such factors as the
condition and growth potential of the various economies and securities
markets, currency and taxation considerations and other pertinent financial,
social, national and political factors. Under certain adverse investment
conditions, the Fund may restrict the number of securities markets in which
its assets will be invested, although under normal market circumstances the
Fund's investments will include securities principally traded in at least
three different countries. The Fund will not limit its investments to any
particular type or size of company.     
 
  The Fund may invest up to 10% of its assets in securities of other
investment companies, such as closed-end management investment companies which
invest in foreign markets. The Fund may also purchase and write call and put
options on securities, securities indexes, and on foreign currencies; enter
into futures contracts and use options on futures contracts, including futures
contracts on foreign currencies; buy or sell foreign currencies; and enter
into forward foreign currency contracts. The Fund may utilize stock index
futures contracts and options thereon for hedging purposes and also for
investment purposes. For instance, the Fund may invest in stock index futures
contacts and related options as an alternative to purchasing individual stocks
to adjust its exposure to a particular foreign market. See "Characteristics
and Risks of Securities and Investment Techniques--Derivative Instruments--
Index Futures."
   
  The Fund will not normally invest in securities of U.S. issuers traded on
U.S. securities markets. However, when the Sub-Adviser believes that
conditions in international securities markets warrant a defensive investment
strategy, the Fund may invest up to 100% of its assets in domestic debt,
foreign debt and equity securities principally traded in the U.S., including
money market instruments, obligations issued or guaranteed by the U.S. or a
foreign government or their respective agencies, authorities or
instrumentalities, or corporate bonds and sponsored American Depository
Receipts.     
 
22
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
  Investing in the securities of foreign issuers, and particularly emerging
market issuers, involves special risks and considerations not typically
associated with investing in U.S. companies. For a discussion of such risks,
see "Characteristics and Risks of Securities and Investment Techniques--Foreign
Securities." The Portfolio Manager for the International Fund is James Smith of
Blairlogie. On or about April 30, 1999, it is anticipated that PIMCO Advisors
will sell substantially all of its ownership interest in Blairlogie (the
"Blairlogie Transaction"). The consummation of the Blairlogie Transaction is
subject to a number of conditions. PIMCO Advisors has determined to continue to
retain Blairlogie as the Sub-Adviser of the Fund following the Blairlogie
Transaction. See "Management of the Trust--Sub-Advisers--Blairlogie."     
   
  Capital Appreciation Fund seeks growth of capital. The Fund invests primarily
in common stocks of companies that have improving fundamentals (such as growth
of earnings and dividends) and whose stock is reasonably valued by the market.
Stocks for the Fund are selected from a universe of the approximately 1,000
largest market capitalization stocks, all of which are those of companies with
market capitalizations of at least $1 billion at the time of investment. The
Fund usually invests in approximately 60 to 100 common stocks. Each issue is
screened and ranked using five distinct computerized models, including: (i) a
dividend growth screen, (ii) an equity growth screen, (iii) an earnings growth
screen, (iv) an earnings momentum screen, and (v) an earnings surprise screen.
The Sub-Adviser believes that the models identify the stocks in the universe
exhibiting growth characteristics with reasonable valuations. Stocks are
replaced when they score worse-than-median screen ranks, have negative earnings
surprises, or show poor relative price performance. The universe is rescreened
frequently to obtain a favorable composition of growth and value
characteristics for the entire Fund. The Portfolio Managers for the Capital
Appreciation Fund are David B. Breed, William B. Bannick, Katherine A. Burdon,
and Peter B. McManus of PIMCO Advisors' subsidiary Cadence.     
   
  Mid-Cap Growth Fund seeks growth of capital. The Fund invests primarily in
common stocks of middle capitalization companies that have improving
fundamentals (such as growth of earnings and dividends) and whose stock is
reasonably valued by the market. Stocks for the Fund are selected from a
universe of companies with market capitalizations in excess of $500 million at
the time of investment, excluding the 200 companies with the highest market
capitalization. The Fund usually invests in approximately 60 to 100 common
stocks. Each issue is screened and ranked using five distinct computerized
models, including: (i) a dividend growth screen, (ii) an equity growth screen,
(iii) an earnings growth screen, (iv) an earnings momentum screen, and (v) an
earnings surprise screen. The Sub-Adviser believes that the models identify the
stocks in the universe exhibiting growth characteristics with reasonable
valuations. Stocks are replaced when they score worse-than-median screen ranks,
have negative earnings surprises, or show poor relative price performance. The
universe is rescreened frequently to obtain a favorable composition of growth
and value characteristics for the entire Fund. The Portfolio Managers for the
Mid-Cap Growth Fund are David B. Breed, William B. Bannick, Katherine A.
Burdon, and Peter B. McManus of PIMCO Advisors' subsidiary Cadence.     
   
  Small-Cap Growth Fund seeks growth of capital. The Fund invests primarily in
common stocks of companies that have improving fundamentals (such as growth of
earnings and dividends) and whose stock is reasonably valued by the market. The
Fund usually invests in approximately 60 to 100 common stocks selected from a
universe of stocks with market capitalizations of $50 million to $1 billion at
the time of investment. Each issue is screened and ranked using five distinct
computerized models, including: (i) a dividend growth screen, (ii) an equity
growth screen, (iii) an earnings growth screen, (iv) an earnings momentum
screen, and (v) an earnings surprise screen. The Sub-Adviser believes that the
models identify the stocks in the universe exhibiting growth characteristics
with reasonable valuations. Stocks are replaced when they score worse-than-
median screen ranks, have negative earnings surprises, or show poor relative
price performance. The universe is rescreened frequently to obtain a favorable
composition of     
                                                                   Prospectus
                                                                              23
<PAGE>
 
   
growth and value characteristics for the entire Fund. The Fund is intended for
aggressive investors seeking above-average gains and willing to accept the
greater risks associated therewith. The Portfolio Managers for the Small-Cap
Growth Fund are David B. Breed, William B. Bannick, Katherine A. Burdon, and
Peter B. McManus of PIMCO Advisors' subsidiary Cadence.     
   
  Micro-Cap Growth Fund seeks long-term growth of capital. The Fund invests
primarily in common stocks of companies that have improving fundamentals (such
as growth of earnings and dividends) and whose stock is reasonably valued by
the market. The Fund usually invests in approximately 60 to 100 common stocks
selected from a universe of stocks with publicly available market
capitalizations of less than $100 million at the time of investment. Each issue
is screened and ranked using five distinct computerized models, including: (i)
a dividend growth screen, (ii) an equity growth screen, (iii) an earnings
growth screen, (iv) an earnings momentum screen, and (v) an earnings surprise
screen. The Sub-Adviser believes that the models identify the stocks in the
universe exhibiting growth characteristics with reasonable valuations. Stocks
are replaced when they score worse-than-median screen ranks, have negative
earnings surprises, or show poor relative price performance. The universe is
rescreened frequently to obtain a favorable composition of growth and value
characteristics for the entire Fund. The Fund is intended for aggressive
investors seeking above-average gains and willing to accept the greater risks
associated therewith. The Portfolio Managers for the Micro-Cap Growth Fund are
David B. Breed, William B. Bannick, Katherine A. Burdon, and Peter B. McManus
of PIMCO Advisors' subsidiary Cadence.     
   
  Renaissance Fund seeks long-term growth of capital and income. The Fund
invests primarily in common stocks having below-average valuations whose
issuers are experiencing improvements in their business fundamentals. Relative
valuation is determined using a multi-factor approach that examines
characteristics such as price to book, price to earnings and price to cash flow
ratios. Stocks which pass the valuation screen are further analyzed to identify
the key drivers of financial results and catalysts for change which indicate
that a company may demonstrate improving fundamentals in the future. Stocks
which appear likely to exceed consensus expectations are candidates for
addition to the Fund's portfolio. Stocks are sold from the Fund's portfolio
when the Sub-Adviser believes that their ability to exceed investor
expectations has diminished or when their valuations have become excessive.
       
  The Fund may invest a portion of its assets in securities of foreign issuers
traded in foreign securities markets (not including Eurodollar certificates of
deposit), which will not exceed 15% of the Fund's assets at the time of
investment. Investing in the securities of foreign issuers involves special
risks and considerations not typically associated with investing in U.S.
securities. For a discussion of such risks, see "Characteristics and Risks of
Securities and Investment Techniques--Foreign Securities." The Fund may also
purchase and write call and put options on securities and securities indexes;
enter into futures contracts and use options on futures contracts; buy or sell
foreign currencies; and enter into forward foreign currency contracts.
Currently, the Portfolio Manager for the Renaissance Fund is Clifford G. Fox of
PIMCO Advisors' subsidiary Columbus Circle. On or about May 7, 1999, PIMCO
Equity Advisors will assume full portfolio management responsibility for the
Renaissance Fund. John K. Schneider of PIMCO Equity Advisors is expected to
become the Portfolio Manager of the Fund at that time. See "Management of the
Trust--Sub-Advisers--Columbus Circle."     
   
  Core Equity Fund seeks long-term growth of capital, with income as a
secondary objective. The Fund attempts to exceed the total return performance
of the S&P 500 over a reasonable measurement period. The Fund usually invests
in approximately 40 to 50 common stocks from companies with market
capitalizations in excess of $3 billion at the time of investment. In selecting
securities, the Sub-Adviser uses an investment discipline called "Positive
Momentum & Positive Surprise." It is based on the premise that companies
performing better than expected will have rising     
 
24
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
securities prices, while companies producing less than expected results will
not. Through thorough analysis of company fundamentals in the context of the
prevailing economic environment, the companies selected for purchase remain in
the Fund only if they continue to achieve or exceed expectations, and are sold
when business or earnings results are disappointing. Stock selection may
include a significant portion of middle capitalization companies combined with
the large capitalization stocks.
   
  The Fund may invest a portion of its assets in securities of foreign issuers
traded in foreign securities markets, which will not exceed 15% of the Fund's
net assets at the time of investment. Investing in the securities of foreign
issuers involves special risks and considerations not typically associated with
investing in U.S. companies. For a discussion of such risks, see
"Characteristics and Risks of Securities and Investment Techniques--Foreign
Securities." The Fund may also purchase and write call and put options on
securities, securities indexes and on foreign currencies; enter into futures
contracts and use options on futures contracts; and enter into forward foreign
currency contracts. The Portfolio Manager for the Core Equity Fund is Anthony
Rizza of PIMCO Advisors' subsidiary Columbus Circle.     
   
  Mid-Cap Equity Fund seeks long-term growth of capital. The Fund usually
invests in approximately 40 to 60 common stocks from companies with market
capitalizations of $800 million to $3 billion at the time of investment. In
selecting securities, the Sub-Adviser uses an investment discipline called
"Positive Momentum & Positive Surprise." It is based on the premise that
companies performing better than expected will have rising securities prices,
while companies producing less than expected results will not. Through thorough
analysis of company fundamentals in the context of the prevailing economic
environment, the companies selected for purchase remain in the Fund only if
they continue to achieve or exceed expectations, and are sold when business or
earnings results are disappointing. Stock selection may include companies that
have grown rapidly from small capitalization status.     
   
  The Fund may invest a portion of its assets in securities of foreign issuers
traded in foreign securities markets, which will not exceed 15% of the Fund's
net assets at the time of investment. Investing in the securities of foreign
issuers involves special risks and considerations not typically associated with
investing in U.S. companies. For a discussion of such risks, see
"Characteristics and Risks of Securities and Investment Techniques--Foreign
Securities." The Fund may also purchase and write call and put options on
securities, securities indexes and on foreign currencies; enter into futures
contracts and use options on futures contracts; and enter into forward foreign
currency contracts. The Portfolio Manager for the Mid-Cap Equity Fund is Amy H.
Hogan of PIMCO Advisors' subsidiary Columbus Circle.     
   
  International Growth Fund seeks long-term capital appreciation. The Fund
invests in an international portfolio of equity and equity-related securities
of companies the principal activities of which are in countries other than the
United States. The Fund will normally invest in securities traded in foreign
securities markets and in securities of foreign issuers traded on U.S.
securities markets. As noted below, except for temporary defensive investments,
the Fund will not invest in securities of U.S. issuers traded on U.S.
securities markets. Otherwise, there are no prescribed limits on geographic
asset distribution, and the Fund has the authority to invest in securities
traded in securities markets of any country in the world. Under certain adverse
investment conditions, the Fund may restrict the number of securities markets
in which it invests, although under normal market conditions, the Fund's
investments will include securities principally traded in at least three
different countries (not including the U.S.). The Fund will not limit its
investments to any particular type or size of company. In pursuing its
investment objective, under normal market conditions, the Fund will invest at
least 65% of its assets in equity securities of issuers which exhibit growth
characteristics in accordance with the Sub-Adviser's Positive Momentum &
Positive Surprise investment discipline (see "Management of the Trust--Sub-
Advisers--Columbus Circle"). The Fund may also invest in issuers which do not
exhibit growth characteristics, but whose securities are thought to be
undervalued.     
                                                                   Prospectus
                                                                              25
<PAGE>
 
  The Fund may invest in developed foreign securities markets and in emerging
markets, where markets may not fully reflect the potential of the developing
economy. The Fund may also invest in shares of companies which are not
presently listed but are in the process of being privatized by the government
and shares of companies that are traded in over-the-counter markets or other
types of unlisted securities markets.
   
  The Fund will apply the Sub-Adviser's Positive Momentum & Positive Surprise
investment discipline to international markets. Asset allocation decisions
("top down") and individual stock selections ("bottom up") result from
identification of positively surprising fundamental trends. Fundamental factors
considered and their importance vary by security, but include country factors
(e.g., changes in the political environment or funds flows); macroeconomic
factors (e.g., GDP growth, inflation and interest rates); global secular trends
(e.g., global grain shortages or growth in wireless communications); and
industry and company specific factors. Investments are made when the relevant
factors are improving (Positive Momentum) faster than expected (Positive
Surprise). The relevant factors can be country (top down) or company (bottom
up) specific.     
   
  The Sub-Adviser believes that securities markets of many nations can be
expected to move relatively independently of one another, because business
cycles and other economic or political events that influence one country's
securities markets may have little effect on the securities markets of other
countries. By investing in an international portfolio, the Fund seeks to reduce
the risks associated with investing in the economy of only one country.     
 
  The Fund may invest up to 10% of its assets in securities of other investment
companies, such as closed-end management investment companies which invest in
foreign markets. The Fund may also purchase and write call and put options on
securities, securities indexes, and on foreign currencies; enter into futures
contracts and use options on futures contracts, including futures contracts on
foreign currencies; buy or sell foreign currencies; and enter into forward
foreign currency contracts. The Fund may utilize stock index futures contracts
and options thereon for hedging purposes and also for investment purposes. For
instance, the Fund may invest in stock index futures contracts and related
options as an alternative to purchasing individual stocks to adjust its
exposure to a particular foreign market. See "Characteristics and Risks of
Securities and Investment Techniques--Derivative Instruments--Index Futures."
   
  The Fund will not normally invest in securities of U.S. issuers traded on
U.S. securities markets. However, when the Sub-Adviser believes that conditions
in international securities markets warrant a defensive investment strategy,
the Fund may temporarily invest up to 100% of its assets in domestic debt,
foreign debt and equity securities principally traded in the U.S., including
money market instruments, obligations issued or guaranteed by the U.S. or a
foreign government or their respective agencies, authorities or
instrumentalities, or corporate bonds and sponsored American Depository
Receipts. The Fund will not invest in debt securities which are of less than
investment grade quality at the time of purchase (i.e., securities rated Ba or
below by Moody's or BB or below by S&P or, if unrated, considered by the Sub-
Adviser to be of comparable quality).     
   
  Investing in the securities of foreign issuers, and particularly emerging
market issuers, involves special risks not typically associated with investing
in U.S. companies. For a discussion of such risks, see "Characteristics and
Risks of Securities and Investment Techniques--Foreign Securities." The
Portfolio Manager for the International Growth Fund is Clifford G. Fox of PIMCO
Advisors' subsidiary Columbus Circle.     
   
  Equity Income Fund seeks current income as a primary investment objective,
and long-term growth of capital as a secondary objective. The Fund invests
primarily in common stocks characterized by having below-average price to
earnings ("P/E") ratios and higher dividend yields relative to their industry
groups. In selecting securities, the Sub-Adviser classifies a universe of
approximately 2,000 stocks by industry, each of which has a minimum market     
 
26
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
capitalization of $200 million at the time of investment. The universe is then
screened to find the lowest P/E ratios in each industry, subject to application
of quality and price momentum screens. From this group, approximately 25 stocks
with the highest yields are chosen for the Fund. The universe is then
rescreened to find the highest yielding stock in each industry, subject to
application of quality and price momentum screens. From this group,
approximately 25 stocks with the lowest P/E ratios are added to the Fund.
Although quarterly rebalancing is a general rule, replacements are made
whenever an alternative stock within the same industry has a significantly
lower P/E ratio or higher dividend yield than the current Fund holding. The
Portfolio Managers for the Equity Income Fund are Chris Najork and Benjamin
Fischer of PIMCO Advisors' subsidiary NFJ.     
   
  Value Fund seeks long-term growth of capital and income. The Fund invests
primarily in common stocks characterized by having below-average P/E ratios
relative to their industry groups. In selecting securities, the Sub-Adviser
classifies a universe of approximately 2,000 stocks by industry, each of which
has a minimum market capitalization of $200 million at the time of investment.
The universe is then screened to find the stocks with the lowest P/E ratios in
each industry, subject to application of quality and price momentum screens.
The stocks in each industry with the lowest P/E ratios that pass the quality
and price momentum screens are then selected for the Fund. The Fund usually
invests in approximately 50 stocks, although the Fund may reduce its holdings
below this number (normally not below 30 stocks) if the Sub-Adviser believes
that this would help the Fund to achieve its investment objective. Although
quarterly rebalancing is a general rule, replacements are made whenever an
alternative stock within the same industry has a significantly lower P/E ratio
than the current Fund holding. The Portfolio Managers for the Value Fund are
Chris Najork, Benjamin Fischer, and Paul A. Magnuson of PIMCO Advisors'
subsidiary NFJ.     
   
  Value 25 Fund seeks long-term growth of capital and income. The Fund invests
primarily in a portfolio of approximately 25 common stocks of companies with
medium market capitalizations and below-average P/E ratios relative to their
industry groups. In selecting securities, the Sub-Adviser classifies a universe
of more than 2,000 stocks by industry, each of which has a minimum market
capitalization of $200 million. The universe is then screened to find stocks
with the lowest P/E ratios in each industry, subject to application of quality,
earnings momentum and price momentum screens. Those stocks which pass the
screenings and satisfy the medium-cap size criteria are further analyzed.
Fundamental research is performed on the companies determined by such process
to be the most undervalued. Approximately 25 stocks, diversified across
industries, are selected on an equal-weighted basis for the Fund's portfolio.
Although quarterly rebalancing is a general rule, replacements are made
whenever an alternative stock has a significantly lower P/E ratio than the
current Fund holdings. Because the Fund concentrates on approximately 25 stocks
at any one time (and is not as diversified as many stock funds), it is intended
for aggressive investors seeking above-average capital gains and willing to
accept the greater risks associated therewith. The Portfolio Managers for the
Value 25 Fund are Chris Najork, Benjamin Fischer, and Cliff Hoover of PIMCO
Advisors' subsidiary NFJ.     
   
  Small-Cap Value Fund seeks long-term growth of capital and income. The Fund
invests primarily in common stocks of companies with market capitalizations
between $50 million and $1 billion at the time of investment. In selecting
securities, the Sub-Adviser divides a universe of up to approximately 2,000
stocks into quartiles based upon P/E ratio. The lowest quartile in P/E ratio is
screened for market capitalizations between $50 million and $1 billion, subject
to application of quality and price momentum screens. Approximately 100 stocks
with the lowest P/E ratios are combined in the Fund, subject to limits on the
weighting for any one industry. Although quarterly rebalancing is a general
rule, replacements are made whenever a holding achieves a higher P/E ratio than
the S&P 500's P/E ratio or its industry average P/E ratio, or when an
alternative stock within the same industry has a significantly lower P/E ratio
than the current Fund holding. The Fund is intended for aggressive investors
seeking above-average gains and willing     
                                                                   Prospectus
                                                                              27
<PAGE>
 
   
to accept the greater risks associated therewith. The Portfolio Managers for
the Small-Cap Value Fund are Chris Najork, Benjamin Fischer, and Paul A.
Magnuson of PIMCO Advisors' subsidiary NFJ.     
   
  Growth Fund seeks long-term growth of capital. Income is an incidental
consideration. The Fund invests primarily in common stocks of companies with
market capitalizations of at least $5 billion at the time of investment. The
Fund may invest a portion of its assets in securities of foreign issuers traded
in foreign securities markets (not including Eurodollar certificates of
deposit), which will not exceed 15% of the Fund's assets at the time of
investment. Investing in the securities of foreign issuers involves special
risks and considerations not typically associated with investing in U.S.
companies. For a discussion of such risks, see "Characteristics and Risks of
Securities and Investment Techniques--Foreign Securities." The Fund may also
purchase and write call and put options on securities and securities indexes;
enter into futures contracts and use options on futures contracts; buy or sell
foreign currencies; and enter into forward foreign currency contracts. The
Portfolio Manager for the Growth Fund is Kenneth W. Corba of PIMCO Equity
Advisors.     
   
  Target Fund seeks capital appreciation. No consideration is given to income.
The Fund invests primarily in common stocks of companies with market
capitalizations of between $1 billion and $10 billion at the time of
investment. The Fund may invest a portion of its assets in securities of
foreign issuers traded in foreign securities markets (not including Eurodollar
certificates of deposit), which will not exceed 15% of the Fund's assets at the
time of investment. Investing in the securities of foreign issuers involves
special risks and considerations not typically associated with investing in
U.S. companies. For a discussion of such risks, see "Characteristics and Risks
of Securities and Investment Techniques--Foreign Securities." The Fund may also
purchase and write call and put options on securities and securities indexes;
enter into futures contracts and use options on futures contracts; buy or sell
foreign currencies; and enter into forward foreign currency contracts. The
Portfolio Manager for the Target Fund is Kenneth W. Corba of PIMCO Equity
Advisors.     
   
  Opportunity Fund seeks capital appreciation. No consideration is given to
income. The Fund invests primarily in common stocks of companies with market
capitalizations of less than $2 billion at the time of investment. The Fund is
intended for aggressive investors seeking above-average gains and willing to
accept the greater risks associated therewith.     
   
  The Fund may invest a portion of its assets in securities of foreign issuers
traded in foreign securities markets (not including Eurodollar certificates of
deposit), which will not exceed 15% of the Fund's assets at the time of
investment. Investing in the securities of foreign issuers involves special
risks and considerations not typically associated with investing in U.S.
companies. For a discussion of such risks, see "Characteristics and Risks of
Securities and Investment Techniques--Foreign Securities." The Fund may also
purchase and write call and put options on securities and securities indexes;
enter into futures contracts and use options on futures contracts; buy or sell
foreign currencies; and enter into forward foreign currency contracts. The
Portfolio Manager for the Opportunity Fund is Michael F. Gaffney of PIMCO
Equity Advisors.     
   
  Innovation Fund seeks capital appreciation. No consideration is given to
income. The Fund invests primarily (i.e., at least 65% of its assets) in common
stocks of companies which utilize innovative technologies to gain a strategic
competitive advantage in their industry as well as companies that provide and
service those technologies. Although the Fund emphasizes the utilization of
technologies, it is not restricted to investment in companies in a particular
business sector or industry.     
   
  The Fund may invest a portion of its assets in securities of foreign issuers
traded in foreign securities markets (not including Eurodollar certificates of
deposit), which will not exceed 15% of the Fund's assets at the time of
investment.     
 
28
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
Investing in the securities of foreign issuers involves special risks and
considerations not typically associated with investing in U.S. companies. For a
discussion of such risks, see "Characteristics and Risks of Securities and
Investment Techniques--Foreign Securities." The Fund may also purchase and
write call and put options on securities and securities indexes; enter into
futures contracts and use options on futures contracts; buy or sell foreign
currencies; and enter into forward foreign currency contracts. The Portfolio
Manager for the Innovation Fund is Dennis P. McKechnie of PIMCO Equity
Advisors.     
   
  Enhanced Equity Fund seeks to provide a total return which equals or exceeds
the total return performance of an index that represents the performance of a
reasonably broad spectrum of common stocks that are publicly traded in the
United States. The Fund currently attempts to equal or exceed the total return
performance of the S&P 500. The Sub-Adviser uses quantitative techniques to
construct a portfolio that consists of some, but not all, of the common stocks
that are represented in the S&P 500. The Fund may invest in common stocks of
foreign issuers if included in the S&P 500. The Fund attempts to provide risk-
controlled exposure to the S&P 500 while adding value through security
selection. The Fund is designed to have no greater volatility than the S&P 500.
Stocks in the S&P 500 are ranked by their exposure to growth and value factors
and combined to create a sector-neutral portfolio which exhibits above average
return potential relative to the S&P 500. Approximately 150 positions are owned
by the Fund. Stocks with rising earnings expectations, reasonable valuation of
those earnings and positive investor sentiment are more heavily weighted. The
fundamental inputs used in the stock selection process include company revenues
and cash flow, stock price, reported and estimated earnings, analyst ratings
and earnings estimates revisions. A computer optimization model is used to
achieve diversification and risk control relative to the S&P 500. Frequent and
modest rebalancing assures these exposures are maintained through time. The
Trustees reserve the right to change, without shareholder approval, the index
whose total return the Fund will attempt to equal or exceed, although it is not
anticipated that such a change would be made in the ordinary course of the
Fund's operations. The Fund may engage in the purchase and writing of options
on securities indexes, and may also invest in stock index futures contracts and
options thereon. The Portfolio Managers for the Enhanced Equity Fund are David
Stein, Tom Seto, and Cliff Quisenberry of PIMCO Advisors' subsidiary
Parametric.     
   
  Tax-Efficient Equity Fund seeks maximum after-tax growth of capital. The Fund
attempts to provide a total return which exceeds the return of the S&P 500. In
addition, the Fund seeks to achieve superior after-tax returns for its
shareholders in part by minimizing the taxes they incur in connection with the
Fund's investment income and realized capital gains by using the strategies
described under "Tax-Efficient Structured Emerging Markets Fund--Tax-Efficient
Management Strategies" below. Notwithstanding these strategies, the Fund may
have taxable investment income and may realize taxable gains from time to time.
       
  The Fund invests primarily in a broadly diversified portfolio of at least 200
common stocks. Normally, at least 95% of the Fund's assets will be invested in
stocks represented in the S&P 500 and the Fund's portfolio is designed to have
certain characteristics that are similar to those of the index. These
characteristics include such measures as dividend yield, P/E ratio, relative
volatility, economic sector exposure, return on equity, and market price-to-
book value ratio. However, the Sub-Adviser attempts to construct a portfolio
that produces a higher total return than the S&P 500 by using the quantitative
security selection techniques described below. Of course, there can be no
assurance that the Fund's investment performance will equal or exceed that of
the S&P 500.     
   
  In selecting specific securities, the Sub-Adviser uses a proprietary
quantitative model that ranks companies based on long-term (5-10 years) price
appreciation potential through analysis of such factors as growth of
sustainable earnings and dividend behavior. Securities in the top 50% of the
model's ranking are considered for purchase. The Sub-Adviser's sell discipline
incorporates a focus on reducing the realization of capital gains. Each sell
candidate is evaluated     
                                                                   Prospectus
                                                                              29
<PAGE>
 
   
based on its cost, current market value, and anticipated benefit of
replacement. Securities in the bottom 20% of the model's ranking are considered
for sale. The Fund may engage in the purchase and writing of options on
securities indexes and may also invest in stock index futures contracts and
options thereon. The Portfolio Managers for the Tax-Efficient Equity Fund are
David Stein, Tom Seto, and Cliff Quisenberry of PIMCO Advisors' subsidiary
Parametric.     
   
  Structured Emerging Markets Fund seeks long-term growth of capital. The Fund
invests primarily in equity securities of companies located in, or whose
business relates to, emerging markets. The Sub-Adviser will identify those
markets that it considers to be emerging markets, relying primarily on those
countries listed on the International Finance Corporation Investable Composite
Index (the "IFC Investable Index"). However, the Sub-Adviser has discretion in
identifying other countries that qualify as emerging markets on the basis of
market capitalization and liquidity, as well as their inclusion, or
consideration for inclusion, as emerging market countries in other broad-based
market indexes. The Fund seeks to achieve its objective by following a
disciplined and systematic methodology for selecting and weighting countries,
industries, and stocks. Diversification and consistent exposure to opportunity
are emphasized over tactical timing decisions with regard to countries,
industries, or stocks. A disciplined methodology for maintaining the allocation
to countries, industries, and stocks is utilized in portfolio composition,
rather than discretionary shifting in country and industry concentration
levels. First, countries are selected based upon their level of development and
equity market institutions. GNP per capita, local economic diversification, and
freedom of investment flows are the primary considerations in country selection
decisions. Most countries are assigned an equal weight in the Fund unless the
size of their equity market is prohibitive; countries with smaller markets
(i.e., less than $5 billion of market capitalization) are assigned one-half of
the weight assigned to countries with larger markets. Second, all stocks in
each eligible country are divided into five broad economic sector groups:
financial, industrial, consumer, utilities, and natural resources. The Sub-
Adviser will generally endeavor to maintain exposure across all five sectors in
each country. Finally, stocks are selected and purchased to fill out the
country and industry structure. Stock purchase candidates are examined for
liquidity, industry representation, performance relative to industry, and long-
term profitability. Under normal market conditions and assuming Fund size of at
least $5 million, the Sub-Adviser will endeavor to maintain investment exposure
to roughly 20 countries and hold in excess of 200 securities in the Fund. The
allocation methodology described above may be changed from time to time based
on evaluations of economic trends by the Sub-Adviser, consistent with the
principles of broad country and company diversification of the Fund's
investments.     
 
  For purposes of implementing its investment objective, the Fund invests
primarily in some or all of the following emerging market countries (this list
is not exclusive):
 
  Argentina            Greece              Mexico              Slovenia
  Botswana             Hungary             Morocco             South Africa
  Brazil               India               Pakistan            South Korea
  Chile                Indonesia           Peru                Taiwan
  China                Israel              Philippines         Thailand
  Colombia             Kenya               Poland              Turkey
  Czech Republic       Latvia              Portugal            Venezuela
  Egypt                Lithuania           Romania             Zimbabwe
  Estonia              Mauritius           Russia
  Ghana                Malaysia            Slovak Republic
 
  For purposes of allocating the Fund's investments, a company is considered to
be located in the country in which the company is domiciled, and a company's
business "relates to" any emerging market country in which the company's
securities are primarily traded, from which the company derives a significant
portion of its revenues, or in which a significant portion of the company's
goods or services are produced.
 
30
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
  Most of the foreign securities in which the Fund invests will be denominated
in foreign currencies. The Fund may engage in foreign currency transactions to
protect itself against fluctuations in currency exchange rates in relation to
the U.S. dollar or to the weighting of a particular foreign currency on the IFC
Investable Index. Such foreign currency transactions may include forward
foreign currency contracts, foreign exchange futures contracts, and options
thereon, currency exchange transactions on a spot (i.e., cash) basis, and put
and call options on foreign currencies. The Fund may sell (write) call and put
options. The Fund may utilize stock index futures contracts and options thereon
for hedging purposes and also for investment purposes. For instance, the Fund
may invest in stock index futures contracts and related options as an
alternative to purchasing individual stocks to adjust its exposure to a
particular foreign market. See "Characteristics and Risks of Securities and
Investment Techniques--Derivative Instruments--Index Futures." The Fund may
also engage in equity index swap transactions. The Fund may also invest up to
5% of its assets in debt securities of issuers located in emerging market
countries, including corporate debt securities and obligations issued or
guaranteed by a foreign government or its agencies, authorities, or
instrumentalities.     
   
  Investing in securities of foreign issuers, and particularly emerging market
issuers, involves special risks and considerations not typically associated
with investing in U.S. companies. For a discussion of such risks, see
"Characteristics and Risks of Securities and Investment Techniques--Foreign
Securities." The Portfolio Managers for the Structured Emerging Markets Fund
are David Stein, Tom Seto, and Cliff Quisenberry of PIMCO Advisors' subsidiary
Parametric.     
 
  Tax-Efficient Structured Emerging Markets Fund has the same investment
objective and policies as the Structured Emerging Markets Fund, except that the
Fund seeks to achieve superior after-tax returns for its shareholders in part
by minimizing the taxes they incur in connection with the Fund's investment
income and realized capital gains by using the strategies described under "Tax-
Efficient Management Strategies" below. While the Fund seeks to minimize
investor taxes associated with the Fund's investment income and realized
capital gains, the Fund may have taxable investment income and may realize
taxable gains from time to time.
   
  Investing in securities of foreign issuers, and particularly emerging market
issuers, involves special risks and considerations not typically associated
with investing in U.S. companies. For a discussion of such risks, see
"Characteristics and Risk of Securities and Investment Techniques--Foreign
Securities." The Portfolio Managers for the Tax-Efficient Structured Emerging
Markets Fund are David Stein, Tom Seto, and Cliff Quisenberry of PIMCO
Advisors' subsidiary Parametric.     
   
  Tax-Efficient Management Strategies The Sub-Adviser for the Tax-Efficient
Equity and Tax-Efficient Structured Emerging Markets Funds utilizes a range of
active tax management techniques to minimize taxable distributions for these
Funds, including: low portfolio turnover; emphasis towards low-dividend,
growth-oriented companies; tax lot accounting (identification of specific
shares of securities being sold that have the lowest tax cost); and regular
rebalancing to capture available tax credits. The Tax-Efficient Equity and Tax-
Efficient Structured Emerging Markets Funds will generally seek to avoid
realizing net short-term capital gains and, when realizing gains, will attempt
to realize long-term gains (i.e., gains on securities held for more than 12
months). The Funds intend to notify each shareholder as to that portion of his
or her capital gain dividends which qualifies for a long-term tax rate,
generally taxed at a maximum tax rate of 20% in the hands of a shareholder who
is an individual. Net short-term capital gains, when distributed, will be taxed
as ordinary income, generally subject to graduated tax rates of up to 39.6% for
shareholders who are individuals. When these Funds decide to sell a particular
appreciated security, they will normally select for sale first those share lots
with holding periods exceeding 12 months and among those, the share lots with
the highest cost basis. The Funds may, when prudent, sell securities to realize
capital losses that can be used to offset realized capital gains.     
                                                                   Prospectus
                                                                              31
<PAGE>
 
   
  To protect against price declines in securities holdings with large
accumulated capital gains, the Tax-Efficient Equity and Tax-Efficient
Structured Emerging Markets Funds may, to the extent permitted by law, use
hedging techniques such as the purchase of put options, the sale of stock index
futures contracts, and equity swaps. By using these techniques rather than
selling such securities, the Funds can reduce their exposure to price declines
in the securities without realizing substantial capital gains. In limited
circumstances, the Funds may follow the practice of distributing selected
appreciated securities to meet redemptions of certain investors and may, within
certain limits, use the selection of securities distributed to meet such
redemptions as a management tool. By distributing appreciated securities the
Funds can reduce their position in such securities without realizing capital
gains. During periods of net withdrawals by investors, using distributions of
securities could enable the Funds to avoid the forced sale of securities to
raise cash for meeting redemptions.     
   
  It is expected that by employing the various tax-efficient management
strategies described above, the Tax-Efficient Equity and Tax-Efficient
Structured Emerging Markets Funds can minimize the extent to which shareholders
incur taxes as a result of realized capital gains. The Funds may nevertheless
realize gains and shareholders will incur tax liability from time to time.     
 
  Balanced Fund seeks total return consistent with prudent investment
management. The Fund attempts to achieve this objective through a management
policy of investing in the following asset classes: common stock, fixed income
securities, and money market instruments. The proportion of the Fund's total
assets allocated among common stocks, fixed income securities, and money market
instruments will vary from time to time and will be determined by the Adviser.
In determining the allocation of the Fund's assets among the three asset
classes, the Adviser will employ asset allocation principles which take into
account certain economic factors, market conditions, and the expected relative
total return and risk of the various asset classes. Under normal circumstances,
it is anticipated that the Fund will generally maintain a balance among the
types of securities in which it invests. Thus, the Fund will normally maintain
40% to 65% of its assets in common stock, at least 25% of its assets in fixed
income securities, and less than 10% of its assets in money market instruments.
However, in no event would the Fund invest in any common stock if, at the time
of investment, more than 80% of the Fund's assets would be invested in common
stock; in no event would the Fund invest in a fixed income security (other than
a short-term instrument) if, at the time of investment, more than 80% of the
Fund's assets would be invested in fixed income securities; nor would the Fund
invest in a money market instrument if, at the time of investment, more than
60% of its assets would be invested in money market instruments.
   
  In managing the Fund, the Adviser uses a specialist approach and has engaged
three of the Trust's Sub-Advisers to manage certain portions of the Fund's
assets. The portion of the assets of the Fund allocated by the Adviser for
investment in common stock (the "Common Stock Segment") will be further
allocated by the Adviser for investment by Cadence and NFJ. The portion of the
Common Stock Segment allocated to Cadence will be managed in accordance with
the investment policies of, and by the same Portfolio Managers as, the Capital
Appreciation Fund; the portion allocated to NFJ will be managed in accordance
with the investment policies of, and by the same Portfolio Managers as, the
Value Fund. Allocations of the Common Stock Segment to Cadence and NFJ will
vary from time to time as determined by the Adviser.     
   
  The portion of the assets of the Fund allocated by the Adviser for investment
in fixed income securities (the "Fixed Income Securities Segment") will be
managed by William H. Gross of PIMCO Advisors' affiliate Pacific Investment
Management. The Fund may invest the Fixed Income Securities Segment in the
following types of securities: securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities; corporate debt securities,
including convertible securities and corporate commercial paper; mortgage-
related and other asset-backed securities; inflation-     
 
32
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
indexed bonds issued by both governments and corporations; structured notes,
including hybrid or "indexed" securities, catastrophe bonds and loan
participations; delayed funding loans and revolving credit facilities; bank
certificates of deposit, fixed time deposits and bankers' acceptances;
repurchase agreements and reverse repurchase agreements; obligations of
foreign governments or their subdivisions, agencies and instrumentalities; and
obligations of international agencies or supranational entities. Fixed income
securities may have fixed, variable, or floating rates of interest.
   
  The Fund invests the Fixed Income Securities Segment in fixed income
securities of varying maturities. Portfolio holdings will be concentrated in
areas of the bond market (based on quality, sector, coupon, or maturity) that
Pacific Investment Management believes to be relatively undervalued. Fixed
income securities in which the Fund may invest will, at the time of
investment, be rated Baa or better by Moody's, BBB or better by S&P or, if not
rated by Moody's or S&P, will be of comparable quality as determined by
Pacific Investment Management, except that up to 10% of the Fixed Income
Securities Segment may be invested in lower rated securities that are rated B
or higher by Moody's or S&P or, if not rated by Moody's or S&P, determined by
Pacific Investment Management to be of comparable quality. High yield fixed
income securities rated lower than Baa by Moody's or BBB by S&P, or of
equivalent quality, are not considered to be investment grade, and are
commonly referred to as "junk bonds." Securities rated below investment grade
and comparable unrated securities are subject to greater risks than higher
quality fixed income securities. See "Characteristics and Risks of Securities
and Investment Techniques--High Yield Securities ("Junk Bonds")." The Fund
also may invest up to 20% of the Fixed Income Securities Segment in securities
denominated in foreign currencies, and may invest beyond this limit in U.S.
dollar-denominated securities of foreign issuers. Investing in securities
denominated in foreign currencies and securities of foreign issuers involves
special risks and considerations not typically associated with investing in
U.S. securities. For a discussion of such risks, see "Characteristics and
Risks of Securities and Investment Techniques--Foreign Securities."     
   
  Each Sub-Adviser generally invests a portion of its allocation in liquid
securities to facilitate redemptions. In addition, PIMCO Advisors reserves the
right to allocate a portion of the Fund's assets (the "Money Market Segment")
for investment in money market instruments and reserves the right to manage
the investment of such assets. Because of the Fund's flexible investment
policy, portfolio turnover may be greater than for a fund that does not
allocate assets among various types of securities. See "Portfolio
Transactions."     
 
  The Fund may engage in the purchase and writing of put and call options on
debt securities and securities indexes and may also purchase or sell interest
rate futures contracts, stock index futures contracts, and options thereon.
The Fund also may enter into swap agreements with respect to foreign
currencies, interest rates, and securities indexes. With respect to securities
of the Fixed Income Securities Segment denominated in foreign currencies, the
Fund may engage in foreign currency exchange transactions by means of buying
or selling foreign currencies on a spot basis, entering into forward foreign
currency contracts, and buying and selling foreign currency options, foreign
currency futures, and options on foreign currency futures. Foreign currency
exchange transactions may be entered into for the purpose of hedging against
foreign currency exchange risk arising from the Fund's investment or
anticipated investment in securities denominated in foreign currencies and for
purposes of increasing exposure to a particular foreign currency or to shift
exposure to foreign currency fluctuations from one country to another.
   
  Duration  Under normal circumstances, the average portfolio duration of the
Fixed Income Securities Segment of the Balanced Fund will vary within a three-
to six-year time frame, based on Pacific Investment Management's forecast for
interest rates. Duration is a measure of the expected life of a fixed income
security that was developed as a more precise alternative to the concept of
"term to maturity." Traditionally, a fixed income security's "term to
maturity" has been used as proxy for the sensitivity of the security's price
to changes in interest rates (which is the "interest rate risk" or     
                                                                   Prospectus
                                                                             33
<PAGE>
 
   
"volatility" of the security). However, "term to maturity" measures only the
time until a fixed income security provides its final payment, taking no
account of the pattern of the security's payments prior to maturity. In
contrast, duration incorporates a bond's yield, coupon interest payments, final
maturity and call features into one measure of the average life of a fixed
income security on a present value basis. Duration management is one of the
fundamental tools used by Pacific Investment Management for the Fixed Income
Securities Segment of the Balanced Fund. For more information on investments in
fixed income securities, see "Characteristics and Risks of Securities and
Investment Techniques" in this Prospectus and "Investment Objectives and
Policies" in the Statement of Additional Information.     
 
Stock Funds
 
  The Emerging Markets, International Developed, Capital Appreciation, Mid-Cap
Growth, Micro-Cap Growth, Small-Cap Growth, Core Equity, Mid-Cap Equity, Equity
Income, Value, Value 25, Small-Cap Value, Enhanced Equity, Structured Emerging
Markets, Tax-Efficient Structured Emerging Markets, and Tax-Efficient Equity
Funds will each invest primarily (normally at least 65% of its assets) in
common stock. Each of these Funds may maintain a portion of its assets, which
will usually not exceed 10%, in U.S. Government securities, high quality debt
securities (whose maturity or remaining maturity will not exceed five years),
money market obligations, and in cash to provide for payment of the Fund's
expenses and to meet redemption requests. It is the policy of these Funds to be
as fully invested in common stocks as practicable at all times, except that the
Structured Emerging Markets and Tax-Efficient Structured Emerging Markets Funds
may invest up to 5% of their respective net assets in debt securities of
emerging market issuers. This policy precludes these Funds from investing in
debt securities as a defensive investment posture (although these Funds may
invest in such securities to provide for payment of expenses and to meet
redemption requests). Accordingly, investors in these Funds bear the risk of
general declines in stock prices and the risk that a Fund's exposure to such
declines cannot be lessened by investment in debt securities. The Funds may
also invest in convertible securities, preferred stock, and warrants, subject
to certain limitations.
   
  The International, Renaissance, Growth, Target, Opportunity, and Innovation
Funds will each invest primarily (normally at least 65% of its assets) in
common stocks, and may also invest in other equity securities, including
preferred stocks and securities (including debt securities and warrants)
convertible into or exercisable for common stocks. The International Growth
Fund will invest primarily in equity and equity-related securities. Each of
these Funds may invest a portion of its assets in debt securities and, for
temporary defensive purposes, up to 100% of its assets in short-term U.S.
Government securities and other money market instruments.     
   
  One or more of the Stock Funds may temporarily not be invested primarily in
equity securities immediately following the commencement of operations or after
receipt of significant new monies. While attempting to identify suitable
investments, the Funds may hold assets in cash, short-term U.S. Government
securities, and other money market instruments. Any of the Stock Funds may
temporarily not contain the number of securities in which the Fund normally
invests if the Fund does not have sufficient assets to be fully invested, or
pending the Sub-Adviser's ability to prudently invest new monies.     
   
  The Stock Funds may also lend portfolio securities; enter into repurchase
agreements and reverse repurchase agreements (subject to the Funds' investment
limitations described below); purchase and sell securities on a when-issued or
delayed delivery basis; and enter into forward commitments to purchase
securities. All of the Stock Funds may invest in American Depository Receipts
("ADRs"). In addition, the Emerging Markets, International Developed,
International, Renaissance, Core Equity, Mid-Cap Equity, International Growth,
Growth, Target, Opportunity, Innovation, Structured Emerging Markets, and Tax-
Efficient Structured Emerging Markets Funds may invest in European Depository
    
34
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
Receipts ("EDRs") and Global Depository Receipts ("GDRs"). The Stock Funds that
invest primarily in securities of foreign issuers may invest a portion of their
assets in debt securities and money market obligations issued by U.S. and
foreign issuers that are either U.S. dollar-denominated or denominated in
foreign currency. For more information on these and other investment practices,
see "Characteristics and Risks of Securities and Investment Techniques" in this
Prospectus and "Investment Objectives and Policies" in the Statement of
Additional Information.
                                                                   Prospectus
                                                                              35
<PAGE>
 
                            INVESTMENT RESTRICTIONS
   
  The investment restrictions set forth below are fundamental policies of the
International, Renaissance, International Growth, Growth, Target, Opportunity,
and Innovation Funds and may not be changed with respect to any such Fund
without shareholder approval by vote of a majority of the outstanding voting
securities of that Fund. The investment objective of each of these Funds and
the Value 25, Tax-Efficient Equity, and Tax-Efficient Structured Emerging
Markets Funds is non-fundamental and may be changed with respect to each such
Fund by the Trustees without shareholder approval. Under the following
fundamental restrictions, none of the International, Renaissance, International
Growth, Growth, Target, Opportunity, and Innovation Funds may:     
 
  (1)  Borrow money in excess of 10% of the value (taken at the lower of cost
       or current value) of such Fund's total assets (not including the
       amount borrowed) at the time the borrowing is made, and then only from
       banks as a temporary measure to facilitate the meeting of redemption
       requests (not for leverage) which might otherwise require the untimely
       disposition of portfolio investments or for extraordinary or emergency
       purposes. Such borrowings will be repaid before any additional
       investments are purchased.
 
  (2)  Pledge, hypothecate, mortgage or otherwise encumber its assets in
       excess of 10% of such Fund's total assets (taken at cost) and then
       only to secure borrowings permitted by Restriction (1) above. (The
       deposit of securities or cash or cash equivalents in escrow in
       connection with the writing of covered call or put options,
       respectively, is not deemed to be pledges or other encumbrances.) (For
       the purpose of this restriction, collateral arrangements with respect
       to the writing of options, futures contracts, options on futures
       contracts, and collateral arrangements with respect to initial and
       variation margin are not deemed to be a pledge of assets and neither
       such arrangements nor the purchase or sale of futures or related
       options are deemed to be the issuance of a senior security).
 
  (3)  Underwrite securities issued by other persons except to the extent
       that, in connection with the disposition of its portfolio investments,
       it may be deemed to be an underwriter under federal securities laws.
 
  (4)   Purchase or sell real estate, although it may purchase securities of
        issuers which deal in real estate, including securities of real
        estate investment trusts, and may purchase securities which are
        secured by interests in real estate.
 
  (5)   Acquire more than 10% of the voting securities of any issuer, both
        with respect to any such Fund and to the Funds to which this policy
        relates in the aggregate.
 
  (6)   Concentrate more than 25% of the value of its total assets in any one
        industry; except that the Innovation Fund will concentrate more than
        25% of its assets in companies which use innovative technologies to
        gain a strategic, competitive advantage in their industry as well as
        companies that provide and service those technologies.
   
  The investment restrictions set forth below are fundamental policies of each
of the Emerging Markets, International Developed, Capital Appreciation, Mid-Cap
Growth, Small-Cap Growth, Micro-Cap Growth, Core Equity, Mid-Cap Equity, Equity
Income, Value, Value 25, Small-Cap Value, Enhanced Equity, Tax-Efficient
Equity, Structured Emerging Markets, Tax-Efficient Structured Emerging Markets,
and Balanced Funds and may not be changed with respect to any such Fund without
shareholder approval by vote of a majority of the outstanding shares of that
Fund. The investment objective of each of these Funds (with the exception of
the Value 25, Tax-Efficient Equity, and Tax-Efficient Stuctured Emerging
Markets Funds) is also fundamental and may not be changed without such
shareholder approval. Under the following fundamental restrictions, none of the
above-referenced Funds may:     
 
 
36
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
  (1)  Invest in a security if, as a result of such investment, more than 25%
       of its total assets (taken at market value at the time of such
       investment) would be invested in the securities of issuers in any
       particular industry, except that this restriction does not apply to
       securities issued or guaranteed by the U.S. Government or its agencies
       or instrumentalities (or repurchase agreements with respect thereto).
 
  (2)  With respect to 75% of its assets, invest in a security if, as a
       result of such investment, more than 5% of its total assets (taken at
       market value at the time of such investment) would be invested in the
       securities of any one issuer, except that this restriction does not
       apply to securities issued or guaranteed by the U.S. Government or its
       agencies or instrumentalities.
 
  (3)  With respect to 75% of its assets, invest in a security if, as a
       result of such investment, it would hold more than 10% (taken at the
       time of such investment) of the outstanding voting securities of any
       one issuer, except that this restriction does not apply to securities
       issued or guaranteed by the U.S. Government or its agencies or
       instrumentalities.
 
  (4)  Purchase or sell real estate, although it may purchase securities
       secured by real estate or interests therein, or securities issued by
       companies in the real estate industry or which invest in real estate
       or interests therein.
 
  (5)  Purchase or sell commodities or commodities contracts (which, for the
       purpose of this restriction, shall not include foreign currency or
       forward foreign currency contracts or swap agreements), except that
       any such Fund may engage in interest rate futures contracts, stock
       index futures contracts, futures contracts based on other financial
       instruments or one or more groups of instruments, and on options on
       such futures contracts.
 
  (6)  Purchase securities on margin, except for use of short-term credit
       necessary for clearance of purchases and sales of portfolio
       securities, but it may make margin deposits in connection with
       transactions in options, futures, and options on futures, and except
       that effecting short sales will be deemed not to constitute a margin
       purchase for purposes of this restriction.
 
  (7)  Borrow money, or pledge, mortgage or hypothecate its assets, except
       that a Fund may (i) borrow from banks or enter into reverse repurchase
       agreements, or employ similar investment techniques, and pledge its
       assets in connection therewith, but only if immediately after each
       borrowing and continuing thereafter, there is asset coverage of 300%
       and (ii) enter into reverse repurchase agreements and transactions in
       options, futures, options on futures, and forward foreign currency
       contracts as described in this Prospectus and in the Statement of
       Additional Information (the deposit of assets in escrow in connection
       with the writing of covered put and call options and the purchase of
       securities on a when-issued or delayed delivery basis and collateral
       arrangements with respect to initial or variation margin deposits for
       futures contracts, options on futures contracts, and forward foreign
       currency contracts will not be deemed to be pledges of such Fund's
       assets).
 
  (8)  Issue senior securities, except insofar as such Fund may be deemed to
       have issued a senior security by reason of borrowing money in
       accordance with the Fund's borrowing policies, and except for purposes
       of this investment restriction, collateral, escrow, or margin or other
       deposits with respect to the making of short sales, the purchase or
       sale of futures contracts or related options, purchase or sale of
       forward foreign currency contracts, and the writing of options on
       securities are not deemed to be an issuance of a senior security.
 
  (9)  Lend any funds or other assets, except that such Fund may, consistent
       with its investment objective and policies: (a) invest in debt
       obligations, including bonds, debentures, or other debt securities,
       bankers' acceptances and commercial paper, even though the purchase of
       such obligations may be deemed to be the making of loans, (b) enter
       into repurchase agreements and reverse repurchase agreements, and (c)
       lend its portfolio securities in an amount not to exceed one-third of
       the value of its total assets, provided such loans
                                                                   Prospectus
                                                                             37
<PAGE>
 
     are made in accordance with applicable guidelines established by the
     Securities and Exchange Commission ("SEC") and the Trustees of the
     Trust.
 
  (10)  Act as an underwriter of securities of other issuers, except to the
        extent that in connection with the disposition of portfolio
        securities, it may be deemed to be an underwriter under the federal
        securities laws.
 
  Unless otherwise noted, the remaining restrictions and policies of each Fund
relating to the investment of its assets and activities are non-fundamental
and may be changed without shareholder approval. As indicated above, certain
fundamental investment restrictions do not apply to certain Funds. However,
certain non-fundamental restrictions, set forth in the Statement of Additional
Information, place comparable limitations on these Funds. See "Investment
Restrictions" in the Statement of Additional Information.
   
  Unless otherwise indicated, all limitations applicable to Fund investments
apply only at the time a transaction is entered into. Any subsequent change in
a rating assigned by any rating service to a security (or, if unrated, deemed
to be of comparable quality), or change in the percentage of Fund assets
invested in certain securities or other instruments resulting from market
fluctuations or other changes in a Fund's total assets will not require a Fund
to dispose of an investment until the Adviser or Sub-Adviser determines that
it is practicable to sell or close out the investment without undue market or
tax consequences to the Fund. In the event that ratings services assign
different ratings to the same security, the Adviser or Sub-Adviser will
determine which rating it believes best reflects the security's quality and
risk at that time, which may be the higher of the several assigned ratings.
    
       CHARACTERISTICS AND RISKS OF SECURITIES AND INVESTMENT TECHNIQUES
 
  The different types of securities and investment techniques used by the
individual Funds all have attendant risks of varying degrees. For example,
with respect to common stock, there can be no assurance of capital
appreciation, and there is a risk of market decline. With respect to debt
securities, including money market instruments, there is the risk that the
issuer of a security may not be able to meet its obligation to make scheduled
interest or principal payments. Because each Fund seeks a different investment
objective and has different investment policies, each is subject to varying
degrees of financial, market, and credit risks. Therefore, investors should
carefully consider the investment objective, investment policies, and
potential risks of any Fund or Funds before investing.
 
  The following describes potential risks associated with different types of
investment techniques that may be used by the individual Funds. For more
detailed information on these investment techniques, as well as information on
the types of securities in which some or all of the Funds may invest, see the
Statement of Additional Information.
 
Small and Medium Capitalization Stocks
 
  Certain of the Funds may invest in common stock of companies with market
capitalizations that are small compared to those of other publicly traded
companies. Generally, small market capitalization is considered to be less
than $1.5 billion and large market capitalization is considered to be more
than $5 billion. Under normal market conditions, the Opportunity Fund will
invest primarily in companies with market capitalizations of less than $2
billion, the Small-Cap Growth and Small-Cap Value Funds will invest primarily
in companies with market capitalizations of between $50 million and $1
billion, and the Micro-Cap Growth Fund will invest primarily in companies with
market capitalizations of less than $100 million. Investments in larger
companies present certain advantages in that such companies generally have
greater financial resources, more extensive research and development,
manufacturing, marketing and service capabilities, and more stability and
greater depth of management and technical personnel.
 
38
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
Investments in smaller, less seasoned companies may present greater
opportunities for growth but also may involve greater risks than customarily
are associated with more established companies. The securities of smaller
companies may be subject to more abrupt or erratic market movements than
larger, more established companies. These companies may have limited product
lines, markets or financial resources, or they may be dependent upon a limited
management group. Their securities may be traded in the over-the-counter market
or on a regional exchange, or may otherwise have limited liquidity. As a result
of owning large positions in this type of security, a Fund is subject to the
additional risk of possibly having to sell portfolio securities at
disadvantageous times and prices if redemptions require the Fund to liquidate
its securities positions. In addition, it may be prudent for a Fund with a
relatively large asset size to limit the number of relatively small positions
it holds in securities having limited liquidity in order to minimize its
exposure to such risks, to minimize transaction costs, and to maximize the
benefits of research. As a consequence, as a Fund's asset size increases, the
Fund may reduce its exposure to illiquid small capitalization securities, which
could adversely affect performance.
 
  Many of the Funds may also invest in stocks of companies with medium market
capitalizations. Whether a U.S. issuer's market capitalization is medium is
determined by reference to the capitalization for all issuers whose equity
securities are listed on a United States national securities exchange or which
are reported on NASDAQ. Issuers with market capitalizations within the range of
capitalization of companies included in the S&P Mid Cap 400 Index may be
regarded as being issuers with medium market capitalizations. Such investments
share some of the risk characteristics of investments in stocks of companies
with small market capitalizations described above, although such companies tend
to have longer operating histories, broader product lines and greater financial
resources, and their stocks tend to be more liquid and less volatile than those
of smaller capitalization issuers.
 
Repurchase Agreements
 
  For the purposes of maintaining liquidity and achieving income, each Fund may
enter into repurchase agreements, which entail the purchase of a portfolio-
eligible security from a bank or broker-dealer that agrees to repurchase the
security at the Fund's cost plus interest within a specified time (normally one
day). If the party agreeing to repurchase should default, as a result of
bankruptcy or otherwise, the Fund will seek to sell the securities which it
holds, which action could involve procedural costs or delays in addition to a
loss on the securities if their value should fall below their repurchase price.
Those Funds whose investment objectives do not include the earning of income
will invest in repurchase agreements only as a cash management technique with
respect to that portion of the portfolio maintained in cash. Each Fund will
limit its investment in repurchase agreements maturing in more than seven days
consistent with the Fund's policy on investment in illiquid securities.
 
Reverse Repurchase Agreements and Other Borrowings
   
  A reverse repurchase agreement may for some purposes be considered borrowing
that involves the sale of a security by a Fund and its agreement to repurchase
the instrument at a specified time and price. The Fund will segregate assets
determined to be liquid by the Adviser or a Sub-Adviser in accordance with
procedures established by the Board of Trustees to cover its obligations under
reverse repurchase agreements. Reverse repurchase agreements will be subject to
the Funds' limitations on borrowings. A Fund also may borrow money for
investment purposes subject to any policies of the Fund currently described in
this Prospectus or in the Statement of Additional Information. Such a practice
will result in leveraging of a Fund's assets. Leverage will tend to exaggerate
the effect on net asset value of any increase or decrease in the value of a
Fund's portfolio and may cause a Fund to liquidate portfolio positions when it
would not be advantageous to do so.     
 
                                                                   Prospectus
                                                                              39
<PAGE>
 
Loans of Portfolio Securities
 
  For the purpose of achieving income, each Fund may lend its portfolio
securities to brokers, dealers, and other financial institutions, provided:
 
  (i)  the loan is secured continuously by collateral consisting of U.S.
       Government securities, cash or cash equivalents (negotiable
       certificates of deposit, bankers' acceptances or letters of credit)
       maintained on a daily mark-to-market basis in an amount at least equal
       to the current market value of the securities loaned;
 
  (ii)   the Fund may at any time call the loan and obtain the return of the
         securities loaned;
 
  (iii)  the Fund will receive any interest or dividends paid on the loaned
         securities; and
 
  (iv)   the aggregate market value of securities loaned will not at any time
         exceed the Fund's limitation on lending its portfolio securities.
 
  Each Fund's performance will continue to reflect changes in the value of the
securities loaned and will also reflect the receipt of either interest, through
investment of cash collateral by the Fund in permissible investments, or a fee,
if the collateral is U.S. Government securities. Securities lending involves
the risk of loss of rights in the collateral or delay in recovery of the
collateral should the borrower fail to return the security loaned or become
insolvent. The Funds may pay lending fees to the party arranging the loan.
 
Foreign Securities
   
  The Emerging Markets, International Developed, International, International
Growth, Structured Emerging Markets, and Tax-Efficient Structured Emerging
Markets Funds may invest directly in foreign equity securities; U.S. dollar- or
foreign currency-denominated foreign corporate debt securities; foreign
preferred securities; certificates of deposit, fixed time deposits and bankers'
acceptances issued by foreign banks; and obligations of foreign governments or
their subdivisions, agencies and instrumentalities, international agencies and
supranational entities. The Renaissance, Core Equity, Mid-Cap Equity, Growth,
Target, Opportunity, and Innovation Funds may invest up to 15% of their
respective net assets in securities which are traded principally in securities
markets outside the United States (Eurodollar certificates of deposit are
excluded for purposes of these limitations). The Renaissance, Growth, Target,
Opportunity, and Innovation Funds may invest without limit in securities of
foreign issuers that are traded in U.S. markets. The Enhanced Equity Fund may
invest in common stock of foreign issuers if included in the index from which
stocks are selected. The Balanced Fund may invest up to 20% of its Fixed Income
Securities Segment in securities denominated in foreign currencies, and may
invest beyond this limit in U.S. dollar-denominated securities of foreign
issuers.     
   
  All of the Funds may invest in ADRs. In addition, the Emerging Markets,
International Developed, International, Renaissance, Core Equity, Mid-Cap
Equity, International Growth, Growth, Target, Opportunity, Innovation,
Structured Emerging Markets, and Tax-Efficient Structured Emerging Markets
Funds may invest in EDRs and GDRs. ADRs are dollar-denominated receipts issued
generally by domestic banks and representing the deposit with the bank of a
security of a foreign issuer, and are publicly traded on exchanges or over-the-
counter in the United States. EDRs are receipts similar to ADRs and are issued
and traded in Europe. GDRs may be offered privately in the United States and
also trade in public or private markets in other countries.     
 
  Investing in the securities of issuers in any foreign country involves
special risks and considerations not typically associated with investing in
U.S. companies. Shareholders should consider carefully the substantial risks
involved in investing in securities issued by companies and governments of
foreign nations. These risks include: differences in accounting, auditing and
financial reporting standards; generally higher commission rates on foreign
portfolio
 
40
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
transactions; the possibility of nationalization, expropriation or
confiscatory taxation; adverse changes in investment or exchange control
regulations (which may include suspension of the ability to transfer currency
from a country); and political instability which could affect U.S. investments
in foreign countries. Individual foreign economies may differ favorably or
unfavorably from the U.S. economy in such respects as growth of gross domestic
product, rate of inflation, capital reinvestment, resources, self-sufficiency,
and balance of payments position. The securities markets, values of
securities, yields, and risks associated with securities markets may change
independently of each other. Additionally, foreign securities and dividends
and interest payable on those securities may be subject to foreign taxes,
including taxes withheld from payments on those securities. Foreign securities
often trade with less frequency and volume than domestic securities and
therefore may exhibit greater price volatility. Additional costs associated
with an investment in foreign securities may include higher custodial fees
than apply to domestic custodial arrangements and transaction costs of foreign
currency conversions. Changes in foreign exchange rates also will affect the
value of securities denominated or quoted in currencies other than the U.S.
dollar.
 
  A Fund's investments in foreign currency denominated debt obligations and
hedging activities will likely produce a difference between its book income
and its taxable income. This difference may cause a portion of the Fund's
income distributions to constitute returns of capital for tax purposes or
require the Fund to make distributions exceeding book income to qualify as a
regulated investment company for federal tax purposes.
 
  Certain of the Funds and, in particular, the Emerging Markets, Structured
Emerging Markets, and Tax-Efficient Structured Emerging Markets Funds, may
invest in the securities of issuers based in countries with developing
economies. Investing in developing (or "emerging market") countries involves
certain risks not typically associated with investing in U.S. securities, and
imposes risks greater than, or in addition to, risks of investing in foreign,
developed countries. A number of emerging market countries restrict, to
varying degrees, foreign investment in securities. Repatriation of investment
income, capital, and the proceeds of sales by foreign investors may require
governmental registration and/or approval in some emerging market countries. A
number of the currencies of emerging market countries have experienced
significant declines against the U.S. dollar in recent years, and devaluation
may occur subsequent to investments in these currencies by a Fund. Inflation
and rapid fluctuations in inflation rates have had, and may continue to have,
negative effects on the economies and securities markets of certain emerging
market countries. Many of the emerging securities markets are relatively
small, have low trading volumes, suffer periods of relative illiquidity, and
are characterized by significant price volatility. There is a risk in emerging
market countries that a future economic or political crisis could lead to
price controls, forced mergers of companies, expropriation or confiscatory
taxation, seizure, nationalization, or creation of government monopolies, any
of which may have a detrimental effect on a Fund's investment.
 
  Additional risks of investing in emerging market countries may include:
currency exchange rate fluctuations; greater social, economic and political
uncertainty and instability (including the risk of war); more substantial
governmental involvement in the economy; less governmental supervision and
regulation of the securities markets and participants in those markets;
unavailability of currency hedging techniques in certain emerging market
countries; the fact that companies in emerging market countries may be newly
organized and may be smaller and less seasoned companies; the difference in,
or lack of, auditing and financial reporting standards, which may result in
unavailability of material information about issuers; the risk that it may be
more difficult to obtain and/or enforce a judgment in a court outside the
United States; and significantly smaller market capitalization of securities
markets. Also, any change in the leadership or politics of emerging market
countries, or the countries that exercise a significant influence over those
countries, may halt the expansion of or reverse the liberalization of foreign
investment policies now occurring and adversely affect existing investment
opportunities.
                                                                   Prospectus
                                                                             41
<PAGE>
 
  In addition, emerging securities markets may have different clearance and
settlement procedures, which may be unable to keep pace with the volume of
securities transactions or otherwise make it difficult to engage in such
transactions. Settlement problems may cause a Fund to miss attractive
investment opportunities, hold a portion of its assets in cash pending
investment, or delay in disposing of a portfolio security. Such a delay could
result in possible liability to a purchaser of the security.
 
  Special Risks of Investing in Russian and Other Eastern European Securities
The Emerging Markets, International, International Growth, Structured Emerging
Markets, and Tax-Efficient Structured Emerging Markets Funds may invest a
portion of their assets in securities of issuers located in Russia and in other
Eastern European countries. While investments in securities of such issuers are
subject generally to the same risks associated with investments in other
emerging market countries described above, the political, legal and operational
risks of investing in Russian and other Eastern European issuers, and of having
assets custodied within these countries, may be particularly acute. A risk of
particular note with respect to direct investment in Russian securities is the
way in which ownership of shares of companies is normally recorded. When a Fund
invests in a Russian issuer, it will normally receive a "share extract," but
that extract is not legally determinative of ownership. The official record of
ownership of a company's share is maintained by the company's share registrar.
Such share registrars are completely under the control of the issuer, and
investors are provided with few legal rights against such registrars. Please
refer to "Investment Objectives and Policies--Foreign Securities" in the
Statement of Additional Information for a more complete description of these
and other risks associated with investments in securities of Russian and other
Eastern European issuers.
 
Foreign Currency Transactions
   
  Foreign currency exchange rates may fluctuate significantly over short
periods of time. They generally are determined by the forces of supply and
demand in the foreign exchange markets and the relative merits of investments
in different countries, actual or perceived changes in interest rates and other
complex factors, as seen from an international perspective. Currency exchange
rates also can be affected unpredictably by intervention (or the failure to
intervene) by U.S. or foreign governments or central banks, or by currency
controls or political developments in the U.S. or abroad. For example,
significant uncertainty surrounds the recent introduction of the euro (a common
currency unit for the European Union) in January 1999 and its effect on the
value of securities denominated in local European currencies. These and other
currencies in which the Funds' assets are denominated may be devalued against
the U.S. dollar, resulting in a loss to the Funds. For a more complete
discussion of foreign currency risks (including those associated with the
euro), please see "Investment Objectives and Policies--Foreign Currencies" in
the Statement of Additional Information.     
   
  The Emerging Markets, International Developed, International, Renaissance,
Core Equity, Mid-Cap Equity, International Growth, Growth, Target, Opportunity,
Innovation, Structured Emerging Markets, Tax-Efficient Structured Emerging
Markets, and Balanced Funds may enter into forward foreign currency exchange
contracts to reduce the risks of adverse changes in foreign exchange rates. In
addition, the Emerging Markets, International Developed, International,
International Growth, Structured Emerging Markets, Tax-Efficient Structured
Emerging Markets, and Balanced Funds may buy and sell foreign currency futures
contracts and options on foreign currencies and foreign currency futures. A
forward foreign currency exchange contract involves an obligation to purchase
or sell a specific currency at a future date, which may be any fixed number of
days from the date of the contract agreed upon by the parties, at a price set
at the time of the contract. By entering into a forward foreign currency
exchange contract, the Fund "locks in" the exchange rate between the currency
it will deliver and the currency it will receive for the duration of the
contract. As a result, a Fund reduces its exposure to changes in the value of
the currency it will deliver and increases its exposure to changes in the value
of the     
 
42
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
currency it will exchange into. The effect on the value of a Fund is similar to
selling securities denominated in one currency and purchasing securities
denominated in another. Contracts to sell foreign currency would limit any
potential gain which might be realized by a Fund if the value of the hedged
currency increases. A Fund may enter into these contracts for the purpose of
hedging against foreign exchange risk arising from the Fund's investment or
anticipated investment in securities denominated in foreign currencies.
Suitable hedging transactions may not be available in all circumstances and
there can be no assurance that a Fund will engage in such transactions at any
given time or from time to time. Also, such transactions may not be successful
and may eliminate any chance for a Fund to benefit from favorable fluctuations
in relevant foreign currencies. The Emerging Markets, International Developed,
International, International Growth, Structured Emerging Markets, and Tax-
Efficient Structured Emerging Markets Funds also may enter into these contracts
for purposes of increasing exposure to a foreign currency or to shift exposure
to foreign currency fluctuations from one country to another. To the extent
that they do so, the Emerging Markets, International Developed, International,
International Growth, Structured Emerging Markets, and Tax-Efficient Structured
Emerging Markets Funds will be subject to the additional risk that the relative
value of currencies will be different than anticipated by the particular Fund's
Sub-Adviser. These Funds may use one currency (or a basket of currencies) to
hedge against adverse changes in the value of another currency (or a basket of
currencies) when exchange rates between the two currencies are positively
correlated. Each Fund will segregate assets determined to be liquid by the
Adviser or a Sub-Adviser in accordance with procedures established by the Board
of Trustees to cover its obligations under forward foreign currency exchange
contracts entered into for non-hedging purposes.     
 
High Yield Securities ("Junk Bonds")
   
  The Renaissance, Growth, and Balanced Funds may invest a portion of their
assets in fixed income securities rated lower than Baa by Moody's or lower than
BBB by S&P but rated at least B by Moody's or S&P or, if not rated, determined
by the Sub-Adviser to be of comparable quality. In addition, the Renaissance
Fund may invest in convertible securities rated below B by Moody's or S&P (or,
if unrated, considered by the Sub-Adviser to be of comparable quality).
Securities rated lower than Baa by Moody's or lower than BBB by S&P are
sometimes referred to as "high yield" or "junk" bonds. Investors should
consider the risks associated with high yield securities before investing in
these Funds. Although each of the Renaissance and Growth Funds reserves the
right to do so at any time, as of the date of this Prospectus, neither Fund
invests nor has the present intention to invest more than 5% of its assets in
high yield securities or junk bonds.     
   
  Investing in high yield securities involves special risks in addition to the
risks associated with investments in higher rated fixed income securities.
While offering a greater potential opportunity for capital appreciation and
higher yields than investments in higher rated debt securities, high yield
securities typically entail greater potential price volatility and may be less
liquid than investment grade debt. High yield securities may be regarded as
predominately speculative with respect to the issuer's continuing ability to
meet principal and interest payments. Analysis of the creditworthiness of
issuers of high yield securities may be more complex than for issuers of higher
quality debt securities, and achievement of a Fund's investment objective may,
to the extent of its investments in high yield securities, depend more heavily
on the Sub-Adviser's creditworthiness analysis than would be the case if the
Fund were investing in higher quality securities. High yield securities may be
more susceptible to real or perceived adverse economic and competitive industry
conditions than higher grade securities.     
 
  For additional discussion of the characteristics of lower rated fixed income
securities, see the Statement of Additional Information. Ratings assigned to
fixed income securities are described in the Appendix to the Statement of
Additional Information.
 
                                                                   Prospectus
                                                                              43
<PAGE>
 
Derivative Instruments
   
  To the extent permitted by the investment objective and policies of each
Fund, a Fund may purchase and write call and put options on securities,
securities indexes and foreign currencies, and enter into futures contracts and
use options on futures contracts as further described below. In pursuit of
their investment objectives, the Emerging Markets, International Developed,
International, Renaissance, Core Equity, Mid-Cap Equity, International Growth,
Growth, Target, Opportunity, Innovation, Tax-Efficient Equity, Structured
Emerging Markets, Tax-Efficient Structured Emerging Markets, and Balanced Funds
may engage in the purchase and writing of call and put options on securities
and enter into futures contracts and options thereon; each of these Funds,
along with the Enhanced Equity Fund, may engage in the purchase and writing of
options on securities indexes and enter into securities index futures contracts
and options thereon. The Funds that may invest in foreign currency denominated
securities may engage in the purchase and writing of call and put options on
foreign currencies. The Emerging Markets, International Developed, Tax-
Efficient Equity, Structured Emerging Markets, Tax-Efficient Structured
Emerging Markets, and Balanced Funds also may enter into swap agreements with
respect to securities indexes. The Balanced Fund may also enter into swap
agreements with respect to foreign currencies and interest rates. The Funds may
(but are not required to) use these techniques to hedge against changes in
interest rates, foreign currency exchange rates or securities prices; and for
the Emerging Markets, International Developed, International, International
Growth, Structured Emerging Markets, and Tax-Efficient Structured Emerging
Markets Funds, to increase exposure to a foreign currency, to shift exposure to
foreign currency fluctuations from one country to another, or as part of their
overall investment strategies. Each Fund will segregate assets determined to be
liquid by the Adviser or a Sub-Adviser in accordance with procedures
established by the Board of Trustees (or, as permitted by applicable
regulation, enter into certain offsetting positions) to cover its obligations
under options, futures, and swaps to limit leveraging of the Fund.     
   
  Derivative instruments are considered for these purposes to consist of
securities or other instruments whose value is derived from or related to the
value of some other instrument or asset, and not to include those securities
whose payment of principal and/or interest depends upon cash flows from
underlying assets, such as mortgage-related or asset-backed securities. See
"Mortgage-Related and Other Asset-Backed Securities." The value of some
derivative instruments in which the Funds may invest may be particularly
sensitive to changes in prevailing interest rates, and, like the other
investments of the Funds, the ability of a Fund to successfully utilize these
instruments may depend in part upon the ability of the Sub-Adviser to forecast
interest rates and other economic factors correctly. If the Sub-Adviser
incorrectly forecasts such factors and has taken positions in derivative
instruments contrary to prevailing market trends, the Funds could be exposed to
the risk of loss.     
   
  The Funds might not employ any of the strategies described below, and no
assurance can be given that any strategy used will succeed. If the Sub-Adviser
incorrectly forecasts interest rates, market values or other economic factors
in utilizing a derivatives strategy for a Fund, the Fund might have been in a
better position if it had not entered into the transaction at all. Also,
suitable derivative transactions may not be available in all circumstances. The
use of these strategies involves certain special risks, including a possible
imperfect correlation, or even no correlation, between price movements of
derivative instruments and price movements of related investments. While some
strategies involving derivative instruments can reduce the risk of loss, they
can also reduce the opportunity for gain or even result in losses by offsetting
favorable price movements in related investments or otherwise, due to the
possible inability of a Fund to purchase or sell a portfolio security at a time
that otherwise would be favorable or the possible need to sell a portfolio
security at a disadvantageous time because the Fund is required to maintain
asset coverage or offsetting positions in connection with transactions in
derivative instruments, and the possible inability of a Fund to close out or to
liquidate its derivatives positions. In addition, a Fund's use of such
instruments may cause the Fund to realize higher     
 
44
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
amounts of short-term capital gains (generally taxed to shareholders at
ordinary income tax rates) than if the Fund had not used such instruments.
    
  Options on Securities, Securities Indexes, and Currencies Certain Funds may
purchase put options on securities. One purpose of purchasing put options is
to protect holdings in an underlying or related security against a substantial
decline in market value. These Funds may also purchase call options on
securities. One purpose of purchasing call options is to protect against
substantial increases in prices of securities the Fund intends to purchase
pending its ability to invest in such securities in an orderly manner. A Fund
may sell put or call options it has previously purchased, which could result
in a net gain or loss depending on whether the amount realized on the sale is
more or less than the premium and other transaction costs paid on the put or
call option which is sold. A Fund may write a call or put option only if the
option is "covered" by the Fund holding a position in the underlying
securities or by other means which would permit immediate satisfaction of the
Fund's obligation as writer of the option. Prior to exercise or expiration, an
option may be closed out by an offsetting purchase or sale of an option of the
same series.
 
  The purchase and writing of options involves certain risks. During the
option period, the covered call writer has, in return for the premium on the
option, given up the opportunity to profit from a price increase in the
underlying security above the exercise price, but, as long as its obligation
as a writer continues, has retained the risk of loss should the price of the
underlying security decline. The writer of an option has no control over the
time when it may be required to fulfill its obligation as a writer of the
option. Once an option writer has received an exercise notice, it cannot
effect a closing purchase transaction in order to terminate its obligation
under the option and must deliver the underlying security at the exercise
price. If a put or call option purchased by the Fund is not sold when it has
remaining value, and if the market price of the underlying security remains
equal to or greater than the exercise price (in the case of a put), or remains
less than or equal to the exercise price (in the case of a call), the Fund
will lose its entire investment in the option. Also, where a put or call
option on a particular security is purchased to hedge against price movements
in a related security, the price of the put or call option may move more or
less than the price of the related security. There can be no assurance that a
liquid market will exist when a Fund seeks to close out an option position.
Furthermore, if trading restrictions or suspensions are imposed on the options
markets, a Fund may be unable to close out a position.
   
  For each of the International, Renaissance, International Growth, Growth,
Target, Opportunity, and Innovation Funds, in the case of a written call
option on a securities index, the Fund will own corresponding securities whose
historic volatility correlates with that of the index.     
 
  The Emerging Markets, International Developed, International, Core Equity,
Mid-Cap Equity, International Growth, Structured Emerging Markets, Tax-
Efficient Structured Emerging Markets, and Balanced Funds may buy or sell put
and call options on foreign currencies as a hedge against changes in the value
of the U.S. dollar (or another currency) in relation to a foreign currency in
which a Fund's securities may be denominated. Currency options traded on U.S.
or other exchanges may be subject to position limits which may limit the
ability of a Fund to reduce foreign currency risk using such options.
 
  Over-the-counter options in which certain Funds may invest differ from
traded options in that they are two-party contracts, with price and other
terms negotiated between buyer and seller, and generally do not have as much
market liquidity as exchange-traded options. The Funds may be required to
treat as illiquid over-the-counter options purchased and securities being used
to cover certain written over-the-counter options.
   
  Swap Agreements The Emerging Markets, International Developed, Tax-Efficient
Equity, Structured Emerging Markets, and Tax-Efficient Structured Emerging
Markets Funds may enter into equity index swap agreements for purposes     
                                                                   Prospectus
                                                                             45
<PAGE>
 
of gaining exposure to the stocks making up an index of securities without
actually purchasing those stocks. The Balanced Fund may enter into swap
agreements to hedge against changes in interest rates, foreign currency
exchange rates or securities prices. Swap agreements are two-party contracts
entered into primarily by institutional investors for periods ranging from a
few weeks to more than one year. In a standard swap transaction, two parties
agree to exchange the returns (or differentials in rates of return) earned or
realized on particular predetermined investments or instruments, which may be
adjusted for an interest factor. The gross returns to be exchanged or "swapped"
between the parties are generally calculated with respect to a "notional
amount," i.e., the return on or increase in value of a particular dollar amount
invested at a particular interest rate, or in a "basket" of securities
representing a particular index.
   
  Most swap agreements entered into by the Funds calculate the obligations of
the parties to the agreement on a "net basis." Consequently, a Fund's current
obligations (or rights) under a swap agreement will generally be equal only to
the net amount to be paid or received under the agreement based on the relative
values of the positions held by each party to the agreement (the "net amount").
A Fund's current obligations under a swap agreement will be accrued daily
(offset against amounts owed to the Fund), and any accrued but unpaid net
amounts owed to a swap counterparty will be covered by the segregation of
assets determined to be liquid by the Sub-Adviser in accordance with procedures
established by the Board of Trustees to limit any potential leveraging of the
Fund's portfolio. Obligations under swap agreements so covered will not be
construed to be "senior securities" for purposes of a Fund's investment
restriction concerning senior securities. A Fund will not enter into a swap
agreement with any single party if the net amount owed or to be received under
existing contracts with that party would exceed 5% of the Fund's assets.     
   
  Whether a Fund's use of swap agreements will be successful in furthering its
investment objective will depend on the Sub-Adviser's ability to predict
correctly whether certain types of investments are likely to produce greater
returns than other investments. Because they are two-party contracts and
because they may have terms of greater than seven days, swap agreements may be
considered to be illiquid investments. Moreover, a Fund bears the risk of loss
of the amount expected to be received under a swap agreement in the event of
the default or bankruptcy of a swap agreement counterparty. The Funds will
enter into swap agreements only with counterparties that meet certain standards
for creditworthiness (generally, such counterparties would have to be eligible
counterparties under the terms of the Funds' repurchase agreement guidelines).
The swaps market is a relatively new market and is largely unregulated. It is
possible that developments in the swaps market, including potential government
regulation, could adversely affect a Fund's ability to terminate existing swap
agreements or to realize amounts to be received under such agreements.     
 
  Futures Contracts and Options on Futures Contracts Certain Funds may enter
into futures contracts and options thereon. The Balanced Fund may invest in
interest rate futures contracts and options thereon. The Emerging Markets,
International Developed, International, Core Equity, Mid-Cap Equity,
International Growth, Structured Emerging Markets, Tax-Efficient Structured
Emerging Markets, and Balanced Funds may invest in foreign exchange futures
contracts and options thereon ("futures options") that are traded on a U.S. or
foreign exchange or board of trade, or similar entity, or quoted on an
automated quotation system. These Funds may engage in such futures transactions
as an adjunct to their securities activities.
 
  There are several risks associated with the use of futures and futures
options for hedging purposes. There can be no guarantee that there will be a
correlation between price movements in the hedging vehicle and in the portfolio
securities being hedged. An incorrect correlation could result in a loss on
both the hedged securities in a Fund and the hedging vehicle, so that the
portfolio return might have been greater had hedging not been attempted. There
can be no assurance that a liquid market will exist at a time when a Fund seeks
to close out a futures contract or a futures option position. Most futures
exchanges and boards of trade limit the amount of fluctuation permitted in
futures
 
46
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
contract prices during a single day; once the daily limit has been reached on a
particular contract, no trades may be made that day at a price beyond that
limit. In addition, certain of these instruments are relatively new and without
a significant trading history. As a result, there is no assurance that an
active secondary market will develop or continue to exist. Lack of a liquid
market for any reason may prevent a Fund from liquidating an unfavorable
position, and the Fund would remain obligated to meet margin requirements until
the position is closed.
   
  Index Futures The Emerging Markets, International Developed, International,
Renaissance, Core Equity, Mid-Cap Equity, International Growth, Growth, Target,
Opportunity, Innovation, Enhanced Equity, Tax-Efficient Equity, Structured
Emerging Markets, Tax-Efficient Structured Emerging Markets, and Balanced Funds
may purchase and sell futures contracts on various securities indexes ("Index
Futures") and related options for hedging purposes and for investment purposes.
A Fund's purchase and sale of Index Futures is limited to contracts and
exchanges which have been approved by the Commodity Futures Trading Commission
("CFTC").     
   
  Each of the Emerging Markets, International Developed, International,
International Growth, Structured Emerging Markets, and Tax-Efficient Structured
Emerging Markets Funds may invest to a significant degree in Index Futures on
stock indexes and related options (including those which may trade outside of
the United States) as an alternative to purchasing individual stocks in order
to adjust the Fund's exposure to a particular market. These Funds may invest in
Index Futures and related options when a Sub-Adviser believes that there are
not enough attractive securities available to maintain the standards of
diversification and liquidity set for a Fund pending investment in such
securities if or when they do become available. Through the use of Index
Futures and related options, a Fund may diversify risk in its portfolio without
incurring the substantial brokerage costs which may be associated with
investment in the securities of multiple issuers. A Fund may also avoid
potential market and liquidity problems which may result from increases in
positions already held by the Fund.     
 
  A Fund may close open positions on the futures exchanges on which Index
Futures are traded at any time up to and including the expiration day. All
positions which remain open at the close of the last business day of the
contract's life are required to settle on the next business day (based upon the
value of the relevant index on the expiration day), with settlement made with
the appropriate clearing house. Because the specific procedures for trading
foreign stock Index Futures on futures exchanges are still under development,
additional or different margin requirements as well as settlement procedures
may be applicable to foreign stock Index Futures at the time a Fund purchases
such instruments.
 
  Positions in Index Futures may be closed out by a Fund only on the futures
exchanges upon which the Index Futures are then traded. There can be no
assurance that a liquid market will exist for any particular contract at any
particular time. Also, the price of Index Futures may not correlate perfectly
with movement in the relevant index due to certain market distortions. First,
all participants in the futures market are subject to margin deposit and
maintenance requirements. Rather than meeting additional margin deposit
requirements, investors may close futures contracts through offsetting
transactions which could distort the normal relationship between the index and
futures markets. Second, the deposit requirements in the futures market are
less onerous than margin requirements in the securities market, and as a
result, the futures market may attract more speculators than does the
securities market. Increased participation by speculators in the futures market
may also cause temporary price distortions. In addition, trading hours for
foreign stock Index Futures may not correspond perfectly to hours of trading on
the foreign exchange to which a particular foreign stock Index Future relates.
This may result in a disparity between the price of Index Futures and the value
of the relevant index due to the lack of continuous arbitrage between the Index
Futures price and the value of the underlying index.
 
                                                                   Prospectus
                                                                              47
<PAGE>
 
  The Funds may only enter into futures contracts or futures options which are
standardized and traded on a U.S. or foreign exchange or board of trade, or
similar entity, or quoted on an automated quotation system. Each Fund may use
futures contracts and related options for "bona fide hedging" purposes, as such
term is defined in applicable regulations of the CFTC, or, with respect to
positions in futures and related options that do not qualify as "bona fide
hedging" positions, may enter such positions only to the extent that aggregate
initial margin deposits plus premiums paid by it for open futures option
positions, less the amount by which any such positions are "in-the-money,"
would not exceed 5% of the Fund's net assets.
 
Short Sales
 
  Each Fund may from time to time make short sales involving securities held in
the Fund's portfolio or which the Fund has the right to acquire without the
payment of further consideration. For these purposes, a Fund may also hold or
have the right to acquire securities which, without the payment of any further
consideration, are convertible into or exchangeable for the securities sold
short. Short sales expose the Fund to the risk that it will be required to
acquire, convert or exchange securities to cover its short position at a time
when the securities sold short have appreciated in value, thus resulting in a
loss to the Fund.
 
When-Issued, Delayed Delivery and Forward Commitment Transactions
 
  Each Fund may purchase securities which it is eligible to purchase on a when-
issued basis, may purchase and sell such securities for delayed delivery and
may make contracts to purchase securities for a fixed price at a future date
beyond normal settlement time (forward commitments). When-issued transactions,
delayed delivery purchases and forward commitments involve a risk of loss if
the value of the securities declines prior to the settlement date, which risk
is in addition to the risk of decline in the value of the Fund's other assets.
Typically, no income accrues on securities a Fund has committed to purchase
prior to the time delivery of the securities is made, although a Fund may earn
income on securities it has segregated.
 
Mortgage-Related and Other Asset-Backed Securities
   
  All Funds that may purchase debt securities for investment purposes (and in
particular the Balanced Fund) may invest in mortgage-related securities, and in
other asset-backed securities (unrelated to mortgage loans) that are offered to
investors currently or in the future. The value of some mortgage-related or
asset-backed securities in which the Funds invest may be particularly sensitive
to changes in prevailing interest rates, and, like other fixed income
investments, the ability of a Fund to successfully utilize these instruments
may depend in part upon the ability of the Sub-Adviser to forecast interest
rates and other economic factors correctly.     
 
  Mortgage Pass-Through Securities are securities representing interests in
"pools" of mortgage loans secured by residential or commercial real property in
which payments of both interest and principal on the securities are generally
made monthly, in effect "passing through" monthly payments made by the
individual borrowers on the mortgage loans which underlie the securities (net
of fees paid to the issuer or guarantor of the securities). Early repayment of
principal on some mortgage-related securities (arising from prepayments of
principal due to sale of the underlying property, refinancing, or foreclosure,
net of fees and costs which may be incurred) may expose a Fund to a lower rate
of return upon reinvestment of principal. Also, if a security subject to
prepayment has been purchased at a premium, the value of the premium would be
lost in the event of prepayment. Like other fixed income securities, when
interest rates rise, the value of a mortgage-related security generally will
decline; however, when interest rates are declining, the value of mortgage-
related securities with prepayment features may not increase as much as other
fixed income securities. The
 
48
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
rate of prepayments on underlying mortgages will affect the price and
volatility of a mortgage-related security, and may have the effect of
shortening or extending the effective maturity of the security beyond what was
anticipated at the time of purchase. To the extent that unanticipated rates of
prepayment on underlying mortgages increase the effective maturity of a
mortgage-related security, the volatility of such security can be expected to
increase.
 
  Payment of principal and interest on some mortgage pass-through securities
(but not the market value of the securities themselves) may be guaranteed by
the full faith and credit of the U.S. Government (in the case of securities
guaranteed by the Government National Mortgage Association ("GNMA")); or
guaranteed by agencies or instrumentalities of the U.S. Government (in the
case of securities guaranteed by the Federal National Mortgage Association
("FNMA") or the Federal Home Loan Mortgage Corporation ("FHLMC"), which are
supported only by the discretionary authority of the U.S. Government to
purchase the agency's obligations). Mortgage-related securities created by
non-governmental issuers (such as commercial banks, savings and loan
institutions, private mortgage insurance companies, mortgage bankers and other
secondary market issuers) may be supported by various forms of insurance or
guarantees, including individual loan, title, pool and hazard insurance and
letters of credit, which may be issued by governmental entities, private
insurers or the mortgage poolers.
 
  Collateralized Mortgage Obligations ("CMOs") are hybrid mortgage-related
instruments. Similar to a bond, interest and pre-paid principal on a CMO are
paid, in most cases, on a monthly basis. CMOs may be collateralized by whole
mortgage loans but are more typically collateralized by portfolios of mortgage
pass-through securities guaranteed by GNMA, FHLMC, or FNMA. CMOs are
structured into multiple classes, with each class bearing a different stated
maturity. Monthly payments of principal, including prepayments, are first
returned to investors holding the shortest maturity class; investors holding
the longer maturity classes receive principal only after the first class has
been retired. CMOs that are issued or guaranteed by the U.S. Government or by
any of its agencies or instrumentalities will be considered U.S. Government
securities by a Fund, while other CMOs, even if collateralized by U.S.
Government securities, will have the same status as other privately issued
securities for purposes of applying a Fund's diversification tests.
 
  Commercial Mortgage-Backed Securities include securities that reflect an
interest in, and are secured by, mortgage loans on commercial real property.
The market for commercial mortgage-backed securities developed more recently
and in terms of total outstanding principal amount of issues is relatively
small compared to the market for residential single-family mortgage-backed
securities. Many of the risks of investing in commercial mortgage-backed
securities reflect the risks of investing in the real estate securing the
underlying mortgage loans. These risks reflect the effects of local and other
economic conditions on real estate markets, the ability of tenants to make
loan payments, and the ability of a property to attract and retain tenants.
Commercial mortgage-backed securities may be less liquid and exhibit greater
price volatility than other types of mortgage-related or asset-backed
securities.
 
  Mortgage-Related Securities include securities other than those described
above that directly or indirectly represent a participation in, or are secured
by and payable from, mortgage loans on real property, such as CMO residuals or
stripped mortgage-backed securities ("SMBS"), and may be structured in classes
with rights to receive varying proportions of principal and interest.
 
  A common type of SMBS will have one class receiving some of the interest and
most of the principal from the mortgage assets, while the other class will
receive most of the interest and the remainder of the principal. In the most
extreme case, one class will receive all of the interest (the interest-only,
or "IO" class), while the other class will receive all of the principal (the
principal-only, or "PO" class). The yield to maturity on an IO class is
extremely sensitive to
                                                                   Prospectus
                                                                             49
<PAGE>
 
the rate of principal payments (including prepayments) on the related
underlying mortgage assets, and a rapid rate of principal payments may have a
material adverse effect on a Fund's yield to maturity from these securities.
For a discussion of the characteristics of some of these instruments, see the
Statement of Additional Information.
 
Convertible Securities
 
  Many of the Funds may invest in convertible securities. Convertible
securities are generally preferred stocks or fixed income securities that are
convertible into common stock at either a stated price or a stated rate. The
price of the convertible security will normally vary in some proportion to
changes in the price of the underlying common stock because of this conversion
feature. A convertible security will normally also provide a fixed income
stream. For this reason, the convertible security may not decline in price as
rapidly as the underlying common stock.
   
  A Fund's Sub-Adviser will select convertible securities to be purchased by
the Fund based primarily upon its evaluation of the fundamental investment
characteristics and growth prospects of the issuer of the security. As a fixed
income security, a convertible security tends to increase in market value when
interest rates decline and to decrease in value when interest rates rise. While
convertible securities generally offer lower interest or dividend yields than
non-convertible fixed income securities of similar quality, their value tends
to increase as the market value of the underlying stock increases and to
decrease when the value of the underlying stock decreases.     
 
  The Renaissance Fund may invest in so-called "synthetic convertible
securities," which are composed of two or more different securities whose
investment characteristics, taken together, resemble those of convertible
securities. For example, the Renaissance Fund may purchase a non-convertible
debt security and a warrant or option. The synthetic convertible differs from
the true convertible security in several respects. Unlike a true convertible
security, which is a single security having a unitary market value, a synthetic
convertible comprises two or more separate securities, each with its own market
value. Therefore, the "market value" of a synthetic convertible is the sum of
the values of its fixed income component and its convertible component. For
this reason, the values of a synthetic convertible and a true convertible
security may respond differently to market fluctuations.
 
Investment in Investment Companies
   
  The Emerging Markets, International Developed, International, and
International Growth Funds may each invest up to 10% of its assets in
securities of other investment companies, such as closed-end management
investment companies, or in pooled accounts or other investment vehicles which
invest in foreign markets. Each of the other Funds may invest up to 5% of its
assets in other investment companies. As a shareholder of an investment
company, these Funds may indirectly bear service and other fees which are in
addition to the fees the Funds pay their service providers.     
 
Credit and Market Risk of Fixed Income Securities
 
  All fixed income securities are subject to market risk and credit risk.
Market risk relates to market-induced changes in a security's value, usually as
a result of changes in interest rates. The value of a Fund's investments in
fixed income securities will change as the general level of interest rates
fluctuate. During periods of falling interest rates, the value of a Fund's
fixed income securities generally rise. Conversely, during periods of rising
interest rates, the value of a Fund's fixed income securities generally
decline. Credit risk relates to the ability of the issuer to make payments of
principal and interest.
 
 
50
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
Money Market Instruments
 
  Each of the Funds may invest at least a portion of its assets in the
following kinds of money market instruments:
 
    (1) short-term U.S. Government securities;
       
    (2) certificates of deposit, bankers' acceptances and other bank
        obligations rated in the two highest rating categories by at least
        two NRSROs, or, if rated by only one NRSRO, in such agency's two
        highest grades, or, if unrated, determined to be of comparable
        quality by the Adviser or a Sub-Adviser. Bank obligations must be
        those of a bank that has deposits in excess of $2 billion or that
        is a member of the Federal Deposit Insurance Corporation. A Fund
        may invest in obligations of U.S. branches or subsidiaries of
        foreign banks ("Yankee dollar obligations") or foreign branches of
        U.S. banks ("Eurodollar obligations");     
       
    (3) commercial paper rated in the two highest rating categories by at
        least two NRSROs, or, if rated by only one NRSRO, in such agency's
        two highest grades, or, if unrated, determined to be of comparable
        quality by the Adviser or a Sub-Adviser;     
       
    (4) corporate obligations with a remaining maturity of 397 days or less
        whose issuers have outstanding short-term debt obligations rated in
        the highest rating category by at least two NRSROs, or, if rated by
        only one NRSRO, in such agency's highest grade, or, if unrated,
        determined to be of comparable quality by the Adviser or a Sub-
        Adviser; and     
 
    (5) repurchase agreements with domestic commercial banks or registered
        broker-dealers.
 
Illiquid Securities
   
  Each Fund may invest in securities that are illiquid so long as no more than
15% of the net assets of the Fund (taken at market value at the time of
investment) would be invested in such securities. Certain illiquid securities
may require pricing at fair value as determined in good faith under the
supervision of the Board of Trustees. A Sub-Adviser may be subject to
significant delays in disposing of illiquid securities, and transactions in
illiquid securities may entail registration expenses and other transaction
costs that are higher than those for transactions in liquid securities.     
   
  The term "illiquid securities" for this purpose means securities that cannot
be disposed of within seven days in the ordinary course of business at
approximately the amount at which a Fund has valued the securities. Illiquid
securities are considered to include, among other things, written over-the-
counter options, securities or other liquid assets being used as cover for such
options, repurchase agreements with maturities in excess of seven days, certain
loan participation interests, fixed time deposits which are not subject to
prepayment or provide for withdrawal penalties upon prepayment (other than
overnight deposits), securities that are subject to legal or contractual
restrictions on resale (such as privately placed debt securities), and other
securities which legally or in the Adviser's or a Sub-Adviser's opinion may be
deemed illiquid (not including securities issued pursuant to Rule 144A under
the Securities Act of 1933 and certain commercial paper that the Adviser or a
Sub-Adviser has determined to be liquid under procedures approved by the Board
of Trustees).     
 
Service Systems -- Year 2000 Problem
 
  Many of the services provided to the Funds depend on the smooth functioning
of computer systems. Many systems in use today cannot distinguish between the
year 1900 and the year 2000. Should any of the service systems fail to process
information properly, that could have an adverse impact on the Funds'
operations and services provided to shareholders. The Adviser, Distributor,
Shareholder Servicing and Transfer Agent, Custodian, and certain other service
providers to the Funds have reported that each is working toward mitigating the
risks associated with the so-called "year 2000 problem." However, there can be
no assurance that the problem will be corrected in all respects and
                                                                   Prospectus
                                                                              51
<PAGE>
 
that the Funds' operations and services provided to shareholders will not be
adversely affected, nor can there be any assurance that the year 2000 problem
will not have an adverse effect on the entities whose securities are held by
the Funds or on domestic or global equity markets or economies, generally.
 
"Fundamental" Policies
   
  The investment objective of each of the International, Renaissance,
International Growth, Value 25, Growth, Target, Opportunity, Innovation, Tax-
Efficient Equity, and Tax-Efficient Structured Emerging Markets Funds described
in this Prospectus may be changed by the Board of Trustees without shareholder
approval. The investment objective of each other Fund is fundamental and may
not be changed without shareholder approval by vote of a majority of the
outstanding shares of that Fund. If there is a change in a Fund's investment
objective, including a change approved by shareholder vote, shareholders should
consider whether the Fund remains an appropriate investment in light of their
then current financial position and needs.     
 
                            MANAGEMENT OF THE TRUST
 
  The business affairs of the Trust are managed under the direction of the
Board of Trustees. Information about the Trustees and the Trust's executive
officers may be found in the Statement of Additional Information under the
heading "Management of the Trust."
 
Investment Adviser
 
  PIMCO Advisors serves as investment adviser to the Funds pursuant to an
investment advisory agreement with the Trust. PIMCO Advisors is a Delaware
limited partnership organized in 1987. PIMCO Advisors provides investment
management and advisory services to private accounts of institutional and
individual clients and to mutual funds. Total assets under management by PIMCO
Advisors and its subsidiary partnerships as of December 31, 1998 were
approximately $244.2 billion.
 
  The general partners of PIMCO Advisors are PIMCO Partners, G.P. and PIMCO
Advisors Holdings L.P. ("PAH"). PIMCO Partners, G.P. is a general partnership
between PIMCO Holding LLC, a Delaware limited liability company and an indirect
wholly-owned subsidiary of Pacific Life Insurance Company, and PIMCO Partners
LLC, a California limited liability company controlled by the current Managing
Directors and two former Managing Directors of Pacific Investment Management.
PIMCO Partners, G.P. is the sole general partner of PAH. PIMCO Advisors is
governed by a Management Board, which exercises substantially all of the
governance powers of the general partner and serves as the functional
equivalent of a board of directors.
   
  PIMCO Advisors' address is 800 Newport Center Drive, Newport Beach,
California 92660. PIMCO Advisors is registered as an investment adviser with
the SEC. PIMCO Advisors currently has seven subsidiary investment adviser
partnerships, the following six of which manage one or more of the Funds:
Blairlogie, Cadence, Columbus Circle, NFJ, Pacific Investment Management, and
Parametric. On or about April 30, 1999, it is anticipated that PIMCO Advisors
will sell substantially all of its ownership interest in Blairlogie. See "Sub-
Advisers--Blairlogie" below.     
   
  Under the investment advisory agreement, PIMCO Advisors, subject to the
supervision of the Board of Trustees, is responsible for providing advice and
guidance with respect to the Funds and for managing, either directly or through
others selected by PIMCO Advisors, the investment of the Funds. PIMCO Advisors
also furnishes to the Board of Trustees periodic reports on the investment
performance of each Fund.     
 
 
52
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
Sub-Advisers     
   
  Pursuant to portfolio management agreements, PIMCO Advisors employs
affiliated firms to serve as Sub-Advisers for the Funds, except that the PIMCO
Equity Advisors division of PIMCO Advisors (also referred to as a "Sub-
Adviser") manages the Growth, Target, Opportunity, and Innovation Funds. PIMCO
Advisors (and not the Funds or the Trust) compensates the Sub-Advisers it
retains from its advisory fee. Each Sub-Adviser has full investment discretion
and makes all determinations with respect to the investment of a Fund's assets,
or, for the Balanced Fund, with respect to the portion of the Fund's assets
allocated to the Sub-Adviser for investment, and makes all determinations
respecting the purchase and sale of a Fund's securities and other investments.
If a separate firm ceases to serve as Sub-Adviser for a Fund, PIMCO Advisors
will either assume full responsibility for the management of that Fund, or
retain a new sub-adviser subject to the approval of the Trustees and, if
required, the Fund's shareholders.     
       
  Blairlogie manages the Emerging Markets, International Developed, and
International Funds (the "Blairlogie Funds"). Blairlogie is an investment
management firm, organized as a limited partnership under the laws of the
United Kingdom, with two general partners and one limited partner. The general
partners are PIMCO Advisors, which serves as the supervisory partner, and
Blairlogie Holdings Limited, a wholly owned subsidiary of PIMCO Advisors, which
serves as the managing partner. The limited partner is Blairlogie Partners
L.P., a limited partnership, the general partner of which is Pacific Asset
Management LLC (a subsidiary of Pacific Life Insurance Company), and the
limited partners of which are the principal executive officers of Blairlogie
Capital Management. Blairlogie Capital Management Ltd., the predecessor
investment adviser to Blairlogie, commenced operations in 1992. Accounts
managed by Blairlogie had combined assets as of December 31, 1998 of
approximately $900 million. Blairlogie's address is 4th Floor, 125 Princes
Street, Edinburgh EH2 4AD, Scotland. Blairlogie is registered as an investment
adviser with the SEC in the United States and with the Investment Management
Regulatory Organisation ("IMRO") in the United Kingdom.
 
  James Smith is primarily responsible for the day-to-day management of the
Blairlogie Funds. Mr. Smith is a Managing Director and the Chief Investment
Officer of Blairlogie and is responsible for managing an investment team of six
professionals who, in turn, specialize in selection of stocks within Europe,
Asia, and the Americas, and in currency and derivatives. He previously served
as a Senior Portfolio Manager at Murray Johnstone in Glasgow, Scotland,
responsible for international investment management for North American clients,
and at Schroder Investment Management in London. Mr. Smith received his
bachelor's degree in Economics from London University and his MBA from
Edinburgh University. He is an Associate of the Institute of Investment
Management and Research.
   
  It is anticipated that PIMCO Advisors will sell substantially all of its
ownership interest in Blairlogie to subsidiaries of Alleghany Asset Management,
Inc. on or about April 30, 1999 (the "Blairlogie Transaction"). The Blairlogie
Transaction is subject to a number of conditions. In connection with the
Blairlogie Transaction, it is proposed that the Emerging Markets and
International Developed Funds (the "Transferring Funds") will transfer all of
their assets and liabilities to newly formed series of Alleghany Funds to be
managed by Blairlogie (the proposed transactions are referred to as
"Reorganizations"). The proposed Reorganizations are subject to a number of
conditions. PIMCO Advisors has determined to continue to retain Blairlogie as
the Sub-Adviser of the International Fund subsequent to the Blairlogie
Transaction pursuant to a new portfolio management agreement between PIMCO
Advisors and Blairlogie.     
       
                                                                   Prospectus
                                                                              53
<PAGE>
 
  This Prospectus will be supplemented or revised if any of these events
involving Blairlogie and the Blairlogie Funds do not occur substantially in
accordance with the schedule outlined above.
 
  Cadence manages the Capital Appreciation, Mid-Cap Growth, Micro-Cap Growth,
and Small-Cap Growth Funds, as well as a portion of the Common Stock Segment of
the Balanced Fund (the "Cadence Funds"). Cadence is an investment management
firm organized as a general partnership. Cadence has two partners: PIMCO
Advisors as the supervisory partner, and Cadence Capital Management Inc. as the
managing partner. Cadence Capital Management Corporation, the predecessor
investment adviser to Cadence, commenced operations in 1988. Accounts managed
by Cadence had combined assets as of December 31, 1998 of approximately $7.4
billion. Cadence's address is Exchange Place, 53 State Street, Boston,
Massachusetts 02109. Cadence is registered as an investment adviser with the
SEC.
 
  David B. Breed, William B. Bannick, Katherine A. Burdon, and Peter B. McManus
are primarily responsible for the day-to-day management of the Cadence Funds.
Mr. Breed is a Managing Director, the Chief Executive Officer, and a founding
partner of Cadence, and has 25 years' investment management experience. He has
been the driving force in developing the firm's growth-oriented stock screening
and selection process and has been with Cadence (or its predecessor) since its
inception. Mr. Breed graduated from the University of Massachusetts and
received his MBA from the Wharton School of Business. He is a Chartered
Financial Analyst. Mr. Bannick is a Managing Director and Executive Vice
President of Cadence and has 13 years' investment management experience. He
previously served as Executive Vice President of George D. Bjurman & Associates
and as Supervising Portfolio Manager of Trinity Investment Management
Corporation. Mr. Bannick joined the predecessor of Cadence in 1992. He
graduated from the University of Massachusetts and received his MBA from Boston
University. Mr. Bannick is a Chartered Financial Analyst. Ms. Burdon is a
Managing Director and Portfolio Manager of Cadence and has 10 years' investment
management experience. She previously served as a Vice President and Portfolio
Manager of The Boston Company. Ms. Burdon joined the predecessor of Cadence in
1993. She graduated from Stanford University and received a Master of Science
degree from Northeastern University. Ms. Burdon is a Chartered Financial
Analyst and Certified Public Accountant. Mr. McManus is Director of Fund
Management of Cadence and has 21 years' investment management experience. He
previously served as a Vice President of Bank of Boston. Mr. McManus joined
Cadence in 1994. He graduated from the University of Massachusetts, and he is
certified as a Financial Planner.
   
  Columbus Circle manages the Renaissance,* Core Equity, Mid-Cap Equity, and
International Growth Funds (the "Columbus Circle Funds"). Columbus Circle is an
investment management firm organized as a general partnership. Columbus Circle
has two partners: PIMCO Advisors as the supervisory partner, and Columbus
Circle Investors Management Inc. as the managing partner. The predecessors of
Columbus Circle, including the Columbus Circle Investors Division of Thomson
Advisory Group L.P. ("TAG"), commenced operations in 1975. Accounts managed by
Columbus Circle had combined assets as of December 31, 1998 of approximately
$9.6 billion. Columbus Circle's address is Metro Center, One Station Place, 8th
Floor, Stamford, Connecticut 06902. Columbus Circle is registered as an
investment adviser with the SEC.     
- --------
   
* On or about May 7, 1999, PIMCO Equity Advisors will assume full portfolio
  management responsibility for the Renaissance Fund under the terms of the
  Trust's investment advisory agreement with PIMCO Advisors. John K. Schneider
  is expected to assume responsibility for the day-to-day portfolio management
  of the Fund. Information about PIMCO Equity Advisors and Mr. Schneider is
  provided below under "PIMCO Equity Advisors."     
 
 
54
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
  At the center of Columbus Circle's equity investment strategy is its theory
of Positive Momentum & Positive Surprise. This theory asserts that a good
company doing better than generally expected will experience a rise in its
stock price. And, conversely, a company falling short of expectations will
experience a drop in its stock price. Based on this theory, Columbus Circle
attempts to manage the Columbus Circle Funds with a view to investing in
growing companies that are surprising the market with business results that are
better than anticipated.
 
  Investment decisions made by Columbus Circle are generally made by one or
more committees, although the following individuals have primary responsibility
for the noted Columbus Circle Funds. Clifford G. Fox is primarily responsible
for the day-to-day management of the Renaissance and International Growth
Funds. Mr. Fox, a Managing Director of Columbus Circle, has 17 years of
investment management experience. He received his bachelor's degree from the
University of Pennsylvania and his MBA from New York University, and he is a
Chartered Financial Analyst. Anthony Rizza is primarily responsible for the
day-to-day management of the Core Equity Fund. Mr. Rizza, a Managing Director
of Columbus Circle, has 12 years of investment management experience. He
received his bachelor's degree from the University of Connecticut, and he is a
Chartered Financial Analyst. Amy H. Hogan is primarily responsible for the day-
to-day management of the Mid-Cap Equity Fund. Ms. Hogan, a Managing Director of
Columbus Circle, has 13 years of investment management experience. She received
her bachelor's degree and MBA from the University of Wisconsin, and she is a
Chartered Financial Analyst.
 
  NFJ manages the Equity Income, Value, Value 25, and Small-Cap Value Funds, as
well as a portion of the Common Stock Segment of the Balanced Fund. NFJ is an
investment management firm organized as a general partnership. NFJ has two
partners: PIMCO Advisors as the supervisory partner, and NFJ Management Inc. as
the managing partner. NFJ Investment Group, Inc., the predecessor investment
adviser to NFJ, commenced operations in 1989. Accounts managed by NFJ had
combined assets as of December 31, 1998 of approximately $2.4 billion. NFJ's
address is 2121 San Jacinto, Suite 1840, Dallas, Texas 75201. NFJ is registered
as an investment adviser with the SEC.
 
  Chris Najork and Benjamin Fischer are responsible for the day-to-day
management of the Equity Income Fund, and the portion of the Common Stock
Segment of the Balanced Fund allocated to NFJ. Mr. Najork is a Managing
Director and a founding partner of NFJ and has 30 years' experience
encompassing equity research and portfolio management. He received his
bachelor's degree and MBA from Southern Methodist University, and he is a
Chartered Financial Analyst. Mr. Fischer is a Managing Director and a founding
partner of NFJ and has 32 years' experience encompassing equity research and
portfolio management. He received his bachelor's degree from Oklahoma
University and his MBA from the New York University Graduate School of
Business. He is a Chartered Financial Analyst. Messrs. Najork, Fischer and Paul
A. Magnuson are primarily responsible for the day-to-day management of the
Value Fund and the Small-Cap Value Fund. Mr. Magnuson, a research analyst at
NFJ, has 13 years' experience in equity research and portfolio management. He
received his bachelor's degree in Finance from the University of Nebraska-
Lincoln. Messrs. Najork, Fischer, and Cliff Hoover are primarily responsible
for the day-to-day management of the Value 25 Fund. Mr. Hoover is a principal
at NFJ and has 24 years' experience in portfolio management and banking. He
received his bachelor's degree and MBA from Texas Tech University. He is a
Chartered Financial Analyst.
   
  Pacific Investment Management manages the Fixed Income Securities Segment of
the Balanced Fund. Pacific Investment Management is an investment management
firm organized as a general partnership. Pacific Investment Management has two
partners: PIMCO Advisors as the supervisory partner, and PIMCO Management, Inc.
as the managing partner. Pacific Investment Management Company, the predecessor
investment adviser to Pacific Investment Management, commenced operations in
1971. Pacific Investment Management had approximately $158 billion of assets
under management as of December 31, 1998. Pacific Investment Management's
address is 840 Newport     
                                                                   Prospectus
                                                                              55
<PAGE>
 
Center Drive, Suite 300, Newport Beach, California 92660. Pacific Investment
Management is registered as an investment adviser with the SEC and as a
commodity trading advisor with the CFTC.
 
  William H. Gross is responsible for the day-to-day management of the Fixed
Income Securities Segment of the Balanced Fund. Mr. Gross is a founder and a
Managing Director of Pacific Investment Management and has been associated with
Pacific Investment Management or its predecessor for more than 28 years. He has
extensive investment experience in both credit research and fixed income
portfolio management. He received his bachelor's degree from Duke University
and his MBA from UCLA Graduate School of Business. Mr. Gross is a Chartered
Financial Analyst and a member of The Los Angeles Society of Financial
Analysts.
   
  PIMCO Equity Advisors manages the Growth, Target, Opportunity, and Innovation
Funds. PIMCO Equity Advisors is a division of PIMCO Advisors and provides
investment management and advisory services primarily to equity-oriented mutual
funds and other institutional clients. Information about PIMCO Advisors is
provided above under "Investment Adviser." Prior to March 5, 1999, Columbus
Circle served as Sub-Adviser for the Growth, Target, Opportunity, and
Innovation Funds.     
   
  PIMCO Equity Advisors specializes in fundamental research that identifies
characteristics of wealth creating businesses. The primary investment style is
quality growth within various market capitalization ranges--small-cap, mid-cap,
and large-cap. PIMCO Equity Advisors seeks to identify quality growth companies
using proprietary research and the execution of a disciplined investment
process.     
   
  Kenneth W. Corba, a Managing Director and Chief Investment Officer of PIMCO
Equity Advisors, is primarily responsible for the day-to-day portfolio
management of the Growth and Target Funds. Mr. Corba has 14 years' investment
management experience. Mr. Corba was most recently Chief Investment Officer of
Eagle Asset Management, and prior to that he was a principal and a Senior Vice
President at Stein Roe and Farnham Inc. Mr. Corba received his bachelor's
degree and MBA from the University of Michigan. He is a Chartered Financial
Analyst. Michael F. Gaffney, a Managing Director of PIMCO Equity Advisors, is
primarily responsible for the day-to-day portfolio management of the
Opportunity Fund. He has 11 years' investment management experience. Mr.
Gaffney previously served as a Senior Vice President of Alliance Capital
Management L.P. He received his bachelor's degree from St. John's University
and his MBA from New York University. Dennis P. McKechnie, a Portfolio Manager
at PIMCO Equity Advisors, has primary responsibility for the day-to-day
portfolio management of the Innovation Fund. He previously shared
responsibility for the Fund as a Portfolio Manager at Columbus Circle. Mr.
McKechnie has 8 years' investment management experience. He received his
bachelor's degree from Purdue University and his MBA from Columbia University.
As discussed above under "Columbus Circle," John K. Schneider is expected to
assume primary responsibility for the day-to-day portfolio management of the
Renaissance Fund on or about May 7, 1999. Mr. Schneider previously served as a
partner and Portfolio Manager of Schneider Capital Management. He has 13 years'
investment management experience. He graduated from Lehigh University and is a
Chartered Financial Analyst.     
 
  Parametric manages the Enhanced Equity, Structured Emerging Markets, Tax-
Efficient Structured Emerging Markets, and Tax-Efficient Equity Funds (the
"Parametric Funds"). Parametric is an investment management firm organized as a
general partnership. Parametric has two partners: PIMCO Advisors as the
supervisory partner, and Parametric Management Inc. as the managing partner.
Parametric Portfolio Associates, Inc., the predecessor investment adviser to
Parametric, commenced operations in 1987. Accounts managed by Parametric had
combined assets as of December 31, 1998 of approximately $3.4 billion.
Parametric's address is 7310 Columbia Center, 701 Fifth Avenue, Seattle,
Washington 98104-7090. Parametric is registered as an investment adviser with
the SEC and as a commodity trading advisor with the CFTC.
 
56
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
  David Stein, Tom Seto, and Cliff Quisenberry are primarily responsible for
the day-to-day management of the Parametric Funds. Mr. Stein is a Managing
Director of Parametric and has been associated with Parametric since June,
1996. He also directs research and product development for Parametric. Mr.
Stein graduated with bachelor's and master's degrees in Applied Mathematics
from the University of Witwatersrand, South Africa, and received a Ph.D. in
Applied Mathematics from Harvard University. Prior to joining Parametric, Mr.
Stein served as the Director of Investment Research at GTE Investment
Management, Director of Active Equity Strategies at the Vanguard Group, and
Director of Quantitative Portfolio Management and Research at IBM. Mr. Seto is
a Vice President of Parametric and has 7 years of experience in managing
structured equity portfolios. Prior to joining Parametric, he served as the
Head of U.S. Equity Index Investments at Barclays Global Investors. Mr. Seto
graduated from the University of Washington with a bachelor's degree in
Electrical Engineering, and from the University of Chicago with an MBA in
Finance. Mr. Quisenberry, a Vice President of Parametric, has 9 years'
experience as a Portfolio Manager and has been with Parametric since 1994. He
previously served as a Vice President and Portfolio Manager at Cutler & Co.,
and as a Security Analyst and Portfolio Manager at Fred Alger Management.
Mr. Quisenberry graduated from Yale University with a bachelor's degree in
Economics. He is a Chartered Financial Analyst.
 
  Registration as an investment adviser with the SEC does not involve
supervision by the SEC over investment advice, and registration with the CFTC
as a commodity trading adviser does not involve supervision by the CFTC over
commodities trading. The portfolio management agreements are not exclusive, and
Blairlogie, Cadence, Columbus Circle, NFJ, Parametric, and Pacific Investment
Management may provide, and currently are providing, investment management
services to other clients, including other investment companies.
 
Fund Administrator
 
  PIMCO Advisors also serves as administrator (the "Administrator") for the
Funds' Institutional Class and Administrative Class shares pursuant to an
administration agreement with the Trust. The Administrator provides or procures
administrative services for Institutional Class and Administrative Class
shareholders of the Funds, which include clerical help and accounting,
bookkeeping, internal audit services and certain other services required by the
Funds, and preparation of reports to the Funds' shareholders and regulatory
filings. The Administrator has retained Pacific Investment Management to
provide such services as sub-administrator. The Administrator and/or the sub-
administrator may also retain other affiliates to provide certain of these
services. In addition, the Administrator, at its own expense, arranges for the
provision of legal, audit, custody, transfer agency (including sub-transfer
agency and other administrative services) and other services necessary for the
ordinary operation of the Funds, and is responsible for the costs of
registration of the Trust's shares and the printing of prospectuses and
shareholder reports for current shareholders.
   
  The Funds (and not the Administrator) are responsible for the following
expenses: (i) salaries and other compensation of any of the Trust's executive
officers and employees who are not officers, directors, stockholders, or
employees of PIMCO Advisors, Pacific Investment Management, or their
subsidiaries or affiliates; (ii) taxes and governmental fees; (iii) brokerage
fees and commissions and other portfolio transaction expenses; (iv) the costs
of borrowing money, including interest expenses; (v) fees and expenses of the
Trustees who are not "interested persons" of the Adviser, any Sub-Adviser, or
the Trust, and any counsel retained exclusively for their benefit; (vi)
extraordinary expenses, including costs of litigation and indemnification
expenses; (vii) expenses which are capitalized in accordance with generally
accepted accounting principles; and (viii) any expenses allocated or allocable
to a specific class of shares, which include service and/or distribution fees
payable with respect to the Administrative Class shares, and may include
certain other expenses as permitted by the Trust's Multiple Class Plan adopted
pursuant to Rule 18f-3 under the Investment Company Act of 1940 (the "1940
Act"), subject to review and approval by the Trustees.     
                                                                   Prospectus
                                                                              57
<PAGE>
 
Advisory and Administrative Fees
 
  The Funds feature fixed advisory and administrative fees. For providing or
arranging for the provision of investment advisory services to the Funds as
described above, PIMCO Advisors receives monthly fees from each Fund at an
annual rate based on the average daily net assets of the Fund as follows:
 
<TABLE>   
<CAPTION>
                                                                       Advisory
   Fund                                                                Fee Rate
   ----                                                                --------
   <S>                                                                 <C>
   Capital Appreciation, Mid-Cap Growth, Equity Income, Value,
    Enhanced Equity, Tax-Efficient Equity,
    Structured Emerging Markets, Tax-Efficient Structured Emerging
    Markets, and Balanced Funds.......................................    .45%
   Growth and Value 25 Funds..........................................    .50%
   Target and International Funds.....................................    .55%
   Core Equity Fund...................................................    .57%
   International Developed, Renaissance, and Small-Cap Value Funds....    .60%
   Mid-Cap Equity Fund................................................    .63%
   Opportunity and Innovation Funds...................................    .65%
   Emerging Markets and International Growth Funds....................    .85%
   Small-Cap Growth Fund..............................................   1.00%
   Micro-Cap Growth Fund..............................................   1.25%
</TABLE>    
 
  For providing or procuring administrative services for the Funds as
described above, the Administrator receives monthly fees from each Fund at an
annual rate based on the average daily net assets attributable in the
aggregate to the Fund's Institutional Class and Administrative Class shares as
follows:
 
<TABLE>
<CAPTION>
                                                                 Administrative
   Fund                                                             Fee Rate
   ----                                                          --------------
   <S>                                                           <C>
   Emerging Markets, International Developed, International,
    International Growth,
    Structured Emerging Markets, and Tax-Efficient Structured
    Emerging Markets Funds......................................      .50%
   All Other Funds..............................................      .25%
</TABLE>
   
  The investment advisory, administration, and sub-administration agreements
for the Funds may be terminated by the Trustees, PIMCO Advisors or Pacific
Investment Management (as the case may be) on 60 days' written notice. In
addition, these agreements may be terminated with regard to the International,
Renaissance, Growth, Target, Opportunity, and Innovation Funds by a majority
of the Trustees that are not interested persons of the Trust, PIMCO Advisors,
or Pacific Investment Management (as the case may be), on 60 days' written
notice. Following their initial terms, the agreements will continue from year
to year if approved by the Trustees.     
   
  Pursuant to the portfolio management agreements between the Adviser and the
Sub-Advisers listed below, PIMCO Advisors (and not the Funds or the Trust)
pays each Sub-Adviser a fee based on a percentage of the average daily net
assets of the noted Funds as follows: Blairlogie--.40% for the International
Fund, .50% for the International Developed Fund, and .75% for the Emerging
Markets Fund; Cadence--.35% for the Capital Appreciation Fund, .35% for the
Mid-Cap Growth Fund, .35% for the portion of the Common Stock Segment of the
Balanced Fund allocated to Cadence, .90% for the Small-Cap Growth Fund, and
1.15% for the Micro-Cap Growth Fund; Columbus Circle--.38% for the Renaissance
Fund, .47% for the Core Equity Fund, .53% for the Mid-Cap Equity Fund, and
 .75% for the International Growth Fund; NFJ--.35% for the Equity Income Fund,
 .35% for the Value Fund, .35% for the portion of the Common Stock Segment of
the Balanced Fund allocated to NFJ, .40% for the Value 25 Fund, and .50% for
the Small-Cap Value Fund; Pacific Investment Management--.25% for the Fixed
Income Securities Segment of the Balanced Fund; and Parametric--.35% for the
Enhanced Equity Fund, .35% for the Tax-Efficient Equity Fund, .35% for the
Structured Emerging Markets Fund, and .35% for the Tax-Efficient Structured
Emerging Markets Fund. PIMCO     
 
58
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
Advisors does not retain a separate firm to serve as Sub-Adviser for the
Growth, Target, Opportunity, and Innovation Funds and retains all of the
advisory fees it earns from those Funds.     
 
Service and Distribution Fees
 
  The Trust has adopted an Administrative Services Plan and a Distribution Plan
(the "Plans") with respect to the Administrative Class shares of each Fund
except for the Emerging Markets, Capital Appreciation, and Small-Cap Growth
Funds, for which the Trust has adopted only an Administrative Services Plan.
Under the terms of the Plans, the Trust is permitted to reimburse, out of the
Administrative Class assets of each Fund, in an amount up to .25% on an annual
basis of the average daily net assets of that class, financial intermediaries
that provide services in connection with the distribution and marketing of
shares and/or the provision of certain shareholder services (in the case of the
Distribution Plan) or the administration of plans or programs that use Fund
shares as their funding medium (in the case of the Administrative Services
Plan), and to reimburse certain other related expenses. Total reimbursements
under the Plans may be paid in an amount up to .25% on an annual basis of the
average daily net assets attributable to the Administrative Class shares of
each Fund. The same entity may not receive both distribution and administrative
services fees with respect to the same assets but may with respect to separate
assets receive fees under each Plan. Fees paid pursuant to either Plan may be
paid for shareholder services and the maintenance of accounts, and therefore
may constitute "service fees" for purposes of applicable rules of the National
Association of Securities Dealers, Inc. Each Plan has been adopted in
accordance with the requirements of Rule 12b-1 under the 1940 Act and will be
administered in accordance with the provisions of that rule, except that
shareholders will not have the voting rights set forth in Rule 12b-1 with
respect to the Administrative Services Plan that they will have with respect to
the Distribution Plan. For more complete disclosure regarding the Plans and
their terms, see the Statement of Additional Information.
 
  Institutional and Administrative Class shares of the Trust may also be
offered through certain brokers and financial intermediaries ("service agents")
that have established a shareholder servicing relationship with the Trust on
behalf of their customers. The Trust pays no compensation to such entities
other than service fees paid with respect to Administrative Class shares.
Service agents may impose additional or different conditions on the purchase or
redemption of Fund shares by their customers and may charge their customers
transaction or other account fees on the purchase and redemption of Fund
shares. Each service agent is responsible for transmitting to its customers a
schedule of any such fees and information regarding any additional or different
conditions regarding purchases and redemptions. Shareholders who are customers
of service agents should consult their service agents for information regarding
these fees and conditions.
 
Distributor
 
  Shares of the Trust are distributed through PIMCO Funds Distributors LLC (the
"Distributor"), a wholly owned subsidiary of PIMCO Advisors. The Distributor,
located at 2187 Atlantic Street, Stamford, Connecticut 06902, is a broker-
dealer registered with the SEC.
 
                               PURCHASE OF SHARES
 
  With certain exceptions, each Fund may offer its shares in up to six classes:
Institutional Class, Administrative Class, Class A, Class B, Class C, and Class
D. This Prospectus relates only to the Institutional Class shares and
Administrative Class shares of the Funds. For information regarding Class A,
Class B, Class C, and Class D shares, see "Other Information--Multiple Classes
of Shares" below.
                                                                   Prospectus
                                                                              59
<PAGE>
 
  Shares of the Institutional Class are offered primarily for direct investment
by investors such as pension and profit sharing plans, employee benefit trusts,
endowments, foundations, corporations, and high net worth individuals
(Institutional Class shares may also be offered through certain financial
intermediaries that charge their customers transaction or other fees with
respect to their customers' investments in the Funds). Shares of the
Administrative Class are offered primarily through employee benefit plan
alliances, broker-dealers, and other intermediaries, and each Fund pays service
and/or distribution fees to such entities for services they provide to
shareholders of that class.
 
  Except as described below under "Fund Reimbursement Fees," shares of either
the Institutional Class or the Administrative Class of the Funds may be
purchased at the relevant net asset value of that class without a sales charge
or other fee. The minimum initial investment for shares of either class is $5
million, except that the minimum initial investment for a registered investment
adviser purchasing Institutional Class shares for its clients through omnibus
accounts is $250,000 per Fund. Shares may also be offered to clients of
Blairlogie, Cadence, Columbus Circle, NFJ, Pacific Investment Management,
Parametric, and their affiliates, and to the benefit plans of PIMCO Advisors
and its affiliates. In addition, the minimum initial investment does not apply
to shares of the Institutional Class offered through fee-based programs
sponsored and maintained by a registered broker-dealer and approved by the
Distributor pursuant to which each investor pays an asset based fee at an
annual rate of at least .50% of the assets in the account to a financial
intermediary for investment advisory and/or administrative services.
 
  Pension and profit-sharing plans, employee benefit trusts and employee
benefit plan alliances and "wrap account" programs established with broker-
dealers or financial intermediaries may purchase shares of either class only if
the plan or program for which the shares are being acquired will maintain an
omnibus or pooled account for each Fund and will not require a Fund to pay any
type of administrative payment per participant account to any third party.
 
  The investment minimums discussed in this section and the limitations set
forth in "Investment Limitations" below do not apply to participants in PIMCO
Advisors Portfolio Strategies, a managed product sponsored by PIMCO Advisors.
 
Initial Investment
 
  An account may be opened by completing and signing a Client Registration
Application and mailing it to PIMCO Funds at the following address: 840 Newport
Center Drive, Suite 300, Newport Beach, California 92660. A Client Registration
Application may be obtained by calling 1-800-800-0952.
   
  Except as provided below, purchases of Institutional Class and Administrative
Class shares can only be made by wiring federal funds to National Financial
Data Services (the "Transfer Agent"), 330 West 9th Street, 4th Floor, Kansas
City, Missouri 64105. Before wiring federal funds, the investor must first
telephone the Trust at 1-800-927-4648 to receive instructions for wire
transfer, and the following information will be requested: name of authorized
person; shareholder name; shareholder account number; name of Fund and share
class; amount being wired; and wiring bank name.     
 
  Shares may be purchased without first wiring federal funds if the proceeds of
the investment are derived from an advisory account maintained by the investor
with PIMCO Advisors or one of its affiliates; from surrender or other payment
from an annuity, insurance, or other contract held by Pacific Life Insurance
Company; or from an investment by broker-dealers, institutional clients or
other financial intermediaries which have established a shareholder servicing
relationship with the Trust on behalf of their customers.
 
60
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
  A purchase order, together with payment in proper form, received by the
Transfer Agent prior to the close of regular trading (normally 4:00 p.m.,
Eastern time) on the New York Stock Exchange (the "Exchange"), on a day the
Trust is open for business, will be effected at that day's net asset value. An
order received after the close of regular trading on the Exchange will be
effected at the net asset value determined on the next business day. However,
orders received by certain retirement plans and other financial intermediaries
on a business day prior to the close of regular trading on the Exchange and
communicated to the Transfer Agent prior to 9:00 a.m., Eastern time, on the
following business day will be effected at the net asset value determined on
the prior business day. The Trust is "open for business" on each day the
Exchange is open for trading, which excludes the following holidays: New Year's
Day, Martin Luther King, Jr. Day, Presidents' Day, Good Friday, Memorial Day,
Independence Day, Labor Day, Thanksgiving Day and Christmas Day. Purchase
orders will be accepted only on days on which the Trust is open for business.
 
Additional Investments
 
  Additional investments may be made at any time at the relevant net asset
value for the particular class by calling the Trust and wiring federal funds to
the Transfer Agent as outlined above.
 
Fund Reimbursement Fees
   
  Investors in Institutional Class and Administrative Class shares of the
Structured Emerging Markets and Tax-Efficient Structured Emerging Markets Funds
are subject to a fee ("Fund Reimbursement Fee"), both at the time of purchase
and at the time of redemption, equal to 1.00% of the net asset value of the
shares purchased or redeemed. Fund Reimbursement Fees are deducted
automatically from the amount invested or the amount to be received in
connection with a redemption; the fees are not paid separately. Fund
Reimbursement Fees are paid to and retained by the Funds to defray certain
costs described below and no portion of such fees are paid to or retained by
the Adviser, the Distributor, or the Sub-Adviser. Fund Reimbursement Fees are
not sales loads or contingent deferred sales charges. Reinvestment of dividends
and capital gains distributions paid to shareholders by the Funds are not
subject to Fund Reimbursement Fees, but redemptions of shares acquired by such
reinvestments are subject to Fund Reimbursement Fees.     
   
  The purpose of Fund Reimbursement Fees is to defray the costs associated with
investing the proceeds of the sale of shares to investors (in the case of
purchases) or the costs associated with the sale of portfolio securities to
satisfy redemption requests (in the case of redemptions), thus insulating
existing shareholders from such costs. The amount of a Fund Reimbursement Fee
represents the Sub-Adviser's estimate of the costs reasonably anticipated to be
incurred by the Funds in connection with the purchase or sale of portfolio
securities, including international stocks, associated with an investor's
purchase or redemption proceeds. These costs include brokerage costs, market
impact costs (i.e., the increase in market prices which may result when a Fund
purchases or sells thinly traded stocks), and the effect of "bid/asked" spreads
in international markets. Transaction costs incurred when purchasing or selling
stocks of companies in foreign countries, and particularly emerging market
countries, may be significantly higher than those in more developed countries.
This is due, in part, to less competition among brokers, underutilization of
technology on the part of foreign exchanges and brokers, the lack of less
expensive investment options (such as derivative instruments), and lower levels
of liquidity in foreign and underdeveloped markets.     
 
  On July 1, 1998, the Structured Emerging Markets and Tax-Efficient Structured
Emerging Markets Funds commenced investment operations immediately following a
transaction (the "Transaction") in which each Fund issued Institutional Class
shares to unit holders of the Parametric Portfolio Associates Emerging Markets
Trust, a separate account
                                                                   Prospectus
                                                                              61
<PAGE>
 
managed by Parametric (the "EM Trust"), in exchange for the EM Trust's assets.
The EM Trust's unit holders were divided into two categories: participants who
pay taxes ("Taxable Participants") and participants that are non-taxable
entities ("Non-Taxable Participants"; together with the Taxable Participants,
the "Participants"). Assets in the EM Trust equal in value to the value of the
Taxable Participants' participation in the EM Trust were transferred to the
Tax-Efficient Structured Emerging Markets Fund in exchange for Institutional
Class shares of that Fund. Assets in the EM Trust equal in value to the value
of the Non-Taxable Participants' participation in the EM Trust were transferred
to the Structured Emerging Markets Fund in exchange for Institutional Class
shares of that Fund. The Participants' interests in the EM Trust were then
terminated and Institutional Class shares of the Tax-Efficient Structured
Emerging Markets Fund were distributed to the Taxable Participants and
Institutional Class shares of the Structured Emerging Markets Fund were
distributed to the Non-Taxable Participants, in each case in proportion to each
Participant's interest in the EM Trust. After the completion of the
Transaction, the portfolio securities which were owned by the EM Trust became
portfolio securities of the Funds (allocated to the Funds on a substantially
pro-rata basis), to be held or sold as Parametric deems appropriate.
 
  Portfolio securities transferred to the Funds pursuant to the Transaction
will have the same tax basis as they had when held by the EM Trust. Such
securities have "built-in" capital gains if their market value at the time of
the Transaction was greater than their tax basis (other securities may have
"built-in" capital losses for tax purposes if their market value at the time of
the Transaction was less than their tax basis). Built-in capital gains realized
upon the disposition of these securities will be distributed to all Fund
shareholders who are shareholders of record on the record date for the
distribution, even if such shareholders were not Participants in the EM Trust
prior to the Transaction. This means that investors purchasing Fund shares
after the date of this Prospectus may be required to pay taxes on distributions
that economically represent a return of a portion of the amount invested. For
further information, see "Dividends, Distributions and Taxes" below and
"Taxation--Distributions" in the Statement of Additional Information.
 
  In connection with the Transaction, the Participants in the EM Trust will not
be subject to Fund Reimbursement Fees with respect to any shares of these Funds
they acquired through June 30, 1998, and will not be subject to Fund
Reimbursement Fees upon the subsequent redemption (including any redemption in
connection with an exchange) of any shares acquired by any such Participant
through June 30, 1998. Such Participants will be subject to such Fund
Reimbursement Fees to the same extent as any other shareholder on any shares of
either Fund acquired (whether by reinvestment of dividends or capital gain
distributions or otherwise) after June 30, 1998.
 
Other Purchase Information
 
  Purchases of a Fund's Institutional Class and Administrative Class shares
will be made in full and fractional shares. In the interest of economy and
convenience, certificates for shares will not be issued.
 
  The Trust and the Distributor each reserves the right, in its sole
discretion, to suspend the offering of shares of the Funds or to reject any
purchase order, in whole or in part, when, in the judgment of management, such
suspension or rejection is in the best interests of the Trust. The Trust and
the Distributor may also waive the minimum initial investment for certain
investors.
 
  Purchases and sales should be made for long-term investment purposes only.
The Trust and Adviser each reserves the right to restrict purchases of Fund
shares (including exchanges) when a pattern of frequent purchases and sales
made in response to short-term fluctuations in share price appears evident.
 
62
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
  Institutional Class and Administrative Class shares of the Trust are not
qualified or registered for sale in all states. Prospective investors should
inquire as to whether shares of a particular Fund are available for offer and
sale in their state of residence. Shares of the Trust may not be offered or
sold in any state unless registered or qualified in that jurisdiction or unless
an exemption from registration or qualification is available.
   
  Investors may, subject to the approval of the Trust, purchase shares of a
Fund with liquid securities that are eligible for purchase by the Fund
(consistent with such Fund's investment policies and restrictions) and that
have a value that is readily ascertainable in accordance with the Trust's
valuation policies. These transactions will be effected only if the Sub-Adviser
intends to retain the security in the Fund as an investment. Assets so
purchased by a Fund will be valued in generally the same manner as they would
be valued for purposes of pricing the Fund's shares, if such assets were
included in the Fund's assets at the time of purchase. The Trust reserves the
right to amend or terminate this practice at any time.     
 
Investment Limitations
   
  Shares of the Small-Cap Growth and Micro-Cap Growth Funds are normally not
available for purchase by new investors, although purchase orders may be
accepted in certain circumstances. Existing shareholders may continue to invest
in these Funds. These restrictions may be changed or eliminated at any time at
the discretion of the Trust's Board of Trustees. In addition, it is anticipated
that the Emerging Markets and International Developed Funds will reorganize as
series of another mutual fund family on or about April 30, 1999 and thereafter
would not be available for purchase from the Trust. See "Management of the
Trust--Sub-Advisers--Blairlogie."     
 
Retirement Plans
 
  Shares of the Funds are available for purchase by retirement and savings
plans, including Keogh plans, 401(k) plans, 403(b) custodial accounts, and
Individual Retirement Accounts. The administrator of a plan or employee
benefits office can provide participants or employees with detailed information
on how to participate in the plan and how to elect a Fund as an investment
option. Participants in a retirement or savings plan may be permitted to elect
different investment options, alter the amounts contributed to the plan, or
change how contributions are allocated among investment options in accordance
with the plan's specific provisions. The plan administrator or employee
benefits office should be consulted for details. For questions about
participant accounts, participants should contact their employee benefits
office, the plan administrator, or the organization that provides recordkeeping
services for the plan. Investors who purchase shares through retirement plans
should be aware that plan administrators may aggregate purchase and redemption
orders for participants in the plan. Therefore, there may be a delay between
the time the investor places an order with the plan administrator and the time
the order is forwarded to the Transfer Agent for execution.
 
                              REDEMPTION OF SHARES
 
Redemptions by Mail
 
  Institutional Class and Administrative Class shares may be redeemed by
submitting a written request to PIMCO Funds, 840 Newport Center Drive, Suite
300, Newport Beach, California 92660, stating the Fund from which the shares
are to be redeemed, the class of shares, the number or dollar amount of the
shares to be redeemed and the account number. The request must be signed
exactly as the names of the registered owners appear on the Trust's account
records, and the request must be signed by the minimum number of persons
designated on the Client Registration Application that are required to effect a
redemption.
                                                                   Prospectus
                                                                              63
<PAGE>
 
Redemptions by Telephone or Other Wire Communication
 
  If an election is made on the Client Registration Application (or
subsequently in writing), redemptions of shares may be requested by calling the
Trust at 1-800-927-4648, by sending a facsimile to 1-949-760-4456, or by other
means of wire communication. Investors should state the Fund and class from
which the shares are to be redeemed, the number or dollar amount of the shares
to be redeemed and the account number. Redemption requests of an amount of $10
million or more may be initiated by telephone, but must be confirmed in writing
by an authorized party prior to processing.
 
  In electing a telephone redemption, the investor authorizes Pacific
Investment Management and the Transfer Agent to act on telephone instructions
from any person representing himself to be the investor, and reasonably
believed by Pacific Investment Management and the Transfer Agent to be genuine.
Neither the Trust nor its Transfer Agent may be liable for any loss, cost or
expense for acting on instructions (whether in writing or by telephone)
believed by the party receiving such instructions to be genuine and in
accordance with the procedures described in this Prospectus. Shareholders
should realize that by electing the telephone or wire redemption option, they
may be giving up a measure of security that they might have if they were to
redeem their shares in writing. Furthermore, interruptions in telephone service
may mean that a shareholder will be unable to effect a redemption by telephone
when desired. The Transfer Agent also provides written confirmation of
transactions initiated by telephone as a procedure designed to confirm that
telephone instructions are genuine (written confirmation is also provided for
redemption requests received in writing). All telephone transactions are
recorded, and Pacific Investment Management or the Transfer Agent may request
certain information in order to verify that the person giving instructions is
authorized to do so. If the Trust or Transfer Agent fails to employ reasonable
procedures to confirm that instructions communicated by telephone are genuine,
it may be liable for any losses due to unauthorized or fraudulent telephone
transactions. All redemptions, whether initiated by letter or telephone, will
be processed in a timely manner, and proceeds will be forwarded by wire in
accordance with the redemption policies of the Trust detailed below. See
"Redemption of Shares--Other Redemption Information."
 
  Shareholders may decline telephone exchange or redemption privileges after an
account is opened by instructing the Transfer Agent in writing at least seven
business days prior to the date the instruction is to be effective.
Shareholders may experience delays in exercising telephone redemption
privileges during periods of abnormal market activity. During periods of
volatile economic or market conditions, shareholders may wish to consider
transmitting redemption orders by telegram, facsimile or overnight courier.
 
  Defined contribution plan participants may request redemptions by contacting
the employee benefits office, the plan administrator or the organization that
provides recordkeeping services for the plan.
 
Other Redemption Information
 
  Redemption requests for Fund shares are effected at the net asset value per
share next determined after receipt in good order of the redemption request by
the Trust or its designee. A redemption request received by the Trust or its
designee prior to the close of regular trading on the Exchange (normally 4:00
p.m., Eastern time), on a day the Trust is open for business, is effective on
that day. A redemption request received after that time becomes effective on
the next business day.
 
  Unless eligible for a waiver, shareholders of the Structured Emerging Markets
and Tax-Efficient Structured Emerging Markets Funds who redeem their shares
will pay a Fund Reimbursement Fee equal to 1.00% of the net asset value of the
shares redeemed. See "Purchase of Shares--Fund Reimbursement Fees."
 
64
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
  Payment of the redemption price will ordinarily be wired to the investor's
bank within three business days after the redemption request, but may take up
to seven business days. Redemption proceeds will be sent by wire only to the
bank name designated on the Client Registration Application. The Trust may
suspend the right of redemption or postpone the payment date at times when the
Exchange is closed, or during certain other periods as permitted under the
federal securities laws.
 
  For shareholder protection, a request to change information contained in an
account registration (for example, a request to change the bank designated to
receive wire redemption proceeds) must be received in writing, signed by the
minimum number of persons designated on the Client Registration Application
that are required to effect a redemption, and accompanied by a signature
guarantee from any eligible guarantor institution, as determined in accordance
with the Trust's procedures. Shareholders should inquire as to whether a
particular institution is an eligible guarantor institution. A signature
guarantee cannot be provided by a notary public. In addition, corporations,
trusts, and other institutional organizations are required to furnish evidence
of the authority of the persons designated on the Client Registration
Application to effect transactions for the organization.
 
  Due to the relatively high cost of maintaining small accounts, the Trust
reserves the right to redeem Institutional Class and Administrative Class
shares in any account for their then-current value (which will be promptly paid
to the investor) if at any time, due to redemption by the investor, the shares
in the account do not have a value of at least $100,000. A shareholder will
receive advance notice of a mandatory redemption and will be given at least 30
days to bring the value of its account up to at least $100,000. This mandatory
redemption policy does not apply to participants in PIMCO Advisors Portfolio
Strategies, a managed product sponsored by PIMCO Advisors.
 
  The Trust agrees to redeem shares of each Fund solely in cash up to the
lesser of $250,000 or 1% of the Fund's net assets during any 90-day period for
any one shareholder. In consideration of the best interests of the remaining
shareholders, the Trust reserves the right to pay any redemption proceeds
exceeding this amount in whole or in part by a distribution in kind of
securities held by a Fund in lieu of cash. Except for Funds with a tax-
efficient management strategy, it is highly unlikely that shares would ever be
redeemed in kind. When shares are redeemed in kind, the redeeming shareholder
should expect to incur transaction costs upon the disposition of the securities
received in the distribution.
 
Exchange Privilege
 
  Shares of a Fund may be exchanged for shares of the same class of any other
Fund or other series of the Trust based on the respective net asset values of
the shares involved. An exchange may be made by following the redemption
procedure described above under "Redemptions by Mail" or, if the telephone
redemption option has been elected, by calling the Trust at 1-800-927-4648.
Shares of a Fund may also be exchanged for shares of the same class of a series
of PIMCO Funds: Pacific Investment Management Series, an affiliated mutual fund
family composed primarily of fixed income portfolios managed by Pacific
Investment Management. Shareholders interested in such an exchange may request
a prospectus for these other series by contacting PIMCO Funds: Pacific
Investment Management Series at the same address and telephone number as the
Trust.
 
  Unless eligible for a waiver, shareholders who exchange their Institutional
Class or Administrative Class shares of any PIMCO Fund for the same class of
shares of the Structured Emerging Markets Fund or Tax-Efficient Structured
Emerging Markets Fund will be subject to a Fund Reimbursement Fee of 1.00% of
the net asset value of the shares of these Funds acquired in connection with
the exchange. Also, shareholders who exchange their shares of the Structured
Emerging Markets Fund or Tax-Efficient Structured Emerging Markets Fund for
shares of any other PIMCO Fund will be
                                                                   Prospectus
                                                                              65
<PAGE>
 
subject to a Fund Reimbursement Fee of 1.00% of the net asset value of the
shares of these Funds redeemed in connection with the exchange. See "Purchase
of Shares--Fund Reimbursement Fees."
 
  Exchanges may be made only with respect to Funds or other eligible series
that are registered in the state of residence of the investor or where an
exemption from registration is available. An exchange order is treated the
same for tax purposes as a redemption followed by a purchase and may result in
a capital gain or loss, and special rules may apply in computing tax basis
when determining gain or loss. See "Taxation" in the Statement of Additional
Information.
   
  It is anticipated that the Emerging Markets and International Developed
Funds will reorganize as series of another mutual fund family on or about
April 30, 1999 and thereafter would not be eligible for exchanges involving
other PIMCO Funds. See "Management of the Trust--Sub-Advisers--Blairlogie."
    
  The Trust reserves the right to refuse exchange purchases if, in the
judgment of the Adviser, the purchase would adversely affect a Fund and its
shareholders. In particular, a pattern of exchanges characteristic of "market-
timing" strategies may be deemed by the Adviser to be detrimental to the Trust
or a particular Fund. Currently, the Trust limits the number of "round trip"
exchanges an investor may make. An investor makes a "round trip" exchange when
the investor purchases shares of a particular Fund, subsequently exchanges
those shares for shares of a different Fund, and then exchanges back into the
originally purchased Fund. The Trust has the right to refuse any exchange for
any investor who completes (by making the exchange back into the shares of the
originally purchased Fund) more than six round trip exchanges in any twelve-
month period. Although the Trust will attempt to give shareholders prior
notice whenever it is reasonably able to do so, it may impose additional
restrictions on exchanges at any time.
 
                            PORTFOLIO TRANSACTIONS
   
  The Adviser or, pursuant to the portfolio management agreements, a Sub-
Adviser, places orders for the purchase and sale of portfolio investments for
a Fund's accounts with brokers or dealers selected by it in its discretion. In
effecting purchases and sales of portfolio securities for the accounts of the
Funds, the Adviser and the Sub-Advisers will seek the best price and execution
of the Funds' orders. In doing so, a Fund may pay higher commission rates than
the lowest available when the Adviser or Sub-Adviser believes it is reasonable
to do so in light of the value of the brokerage and research services provided
by the broker effecting the transaction. The Adviser and Sub-Advisers also may
consider sales of shares of the Trust as a factor in the selection of broker-
dealers to execute portfolio transactions for the Trust.     
   
  Some securities considered for investment by the Funds may also be
appropriate for other clients served by the Adviser or a Sub-Adviser. If a
purchase or sale of securities consistent with the investment policies of a
Fund and one or more of these clients is considered at or about the same time,
transactions in such securities will be allocated among the Fund and clients
in a manner deemed fair and reasonable by the Adviser or Sub-Adviser.
Particularly when investing in less liquid or illiquid securities of smaller
capitalization companies, such allocation may take into account the asset size
of a Fund in determining whether the allocation of an investment is suitable.
As a result, larger Funds may become more concentrated in more liquid
securities than smaller Funds or private accounts of the Adviser or a Sub-
Adviser pursuing a small capitalization investment strategy, which could
adversely affect performance. The Adviser or a Sub-Adviser may aggregate
orders for the Funds with simultaneous transactions entered into on behalf of
its other clients so long as price and transaction expenses are averaged
either for the portfolio transaction or for that day.     
 
66
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
  A change in the securities held by a Fund is known as "portfolio turnover."
With the exception of the Tax-Efficient Structured Emerging Markets and Tax-
Efficient Equity Funds (which may attempt to minimize portfolio turnover as a
tax-efficient management strategy), the Sub-Advisers manage the Funds without
regard generally to restrictions on portfolio turnover, except those imposed on
their ability to engage in short-term trading by provisions of the federal tax
laws. The use of futures contracts and other derivative instruments with
relatively short maturities may tend to exaggerate the portfolio turnover rate
for some of the Funds. The use of futures contracts may involve the payment of
commissions to futures commission merchants. High portfolio turnover (e.g.,
over 100%) involves correspondingly greater expenses to a Fund, including
brokerage commissions or dealer mark-ups and other transaction costs on the
sale of securities and reinvestments in other securities. Such sales may result
in realization of taxable capital gains (including short-term capital gains
which are generally taxed to shareholders at ordinary income tax rates). See
"Dividends, Distributions and Taxes." Portfolio turnover rates for each Fund
for which financial highlights for at least the past two fiscal years are
provided in this Prospectus are set forth under "Financial Highlights."
Portfolio turnover rates for the remaining Funds with at least two fiscal years
of operations were as follows for the fiscal years ended June 30, 1998 and
1997, respectively; International-- 60% and 59%; Renaissance--192% and 131%;
Growth-- 123% and 94%; Target-- 226% and 145%; Opportunity-- 86% and 69%; and
Innovation--100% and 80%. The annual portfolio turnover rate for each of the
Tax-Efficient Equity and Tax-Efficient Structured Emerging Markets Funds is
expected to be less than 40%. The annual portfolio turnover rate for each of
the Structured Emerging Markets and International Growth Funds is expected to
be less than 100% and for the Value 25 Fund is expected to be less than 150%.
In connection with the change in Sub-Advisers of the Growth, Target,
Opportunity, Innovation, and Renaissance Funds, these Funds may experience
increased turnover due to the differences, if any, between the portfolio
management strategies of Columbus Circle and PIMCO Equity Advisors. See
"Management of the Trust-- Sub-Advisers."     
 
                                NET ASSET VALUE
 
  The net asset values of Institutional and Administrative Class shares of each
Fund will be determined once on each day on which the Exchange is open (a
"Business Day"), as of the close of regular trading (normally 4:00 p.m.,
Eastern time) on the Exchange. Net asset value will not be determined on days
on which the Exchange is closed.
 
  Portfolio securities and other assets for which market quotations are readily
available are stated at market value. Fixed income securities are normally
valued on the basis of quotations obtained from brokers and dealers or pricing
services, which take into account appropriate factors such as institutional-
sized trading in similar groups of securities, yield, quality, coupon rate,
maturity, type of issue, trading characteristics, and other market data.
Certain fixed income securities for which daily market quotations are not
readily available may be valued, pursuant to guidelines established by the
Board of Trustees, with reference to fixed income securities whose prices are
more readily obtainable and whose durations are comparable to the securities
being valued. Short-term investments having a maturity of 60 days or less are
valued at amortized cost, when the Board of Trustees determines that amortized
cost is their fair value. Exchange-traded options, futures and options on
futures are valued at the settlement price as determined by the appropriate
clearing corporation. All other securities and assets are valued at their fair
value as determined in good faith by the Trustees or by persons acting at their
direction.
 
  Quotations of foreign securities in foreign currency are converted to U.S.
dollar equivalents using foreign exchange quotations received from independent
dealers. The calculation of the net asset value of the Emerging Markets,
International Developed, International, International Growth, Structured
Emerging Markets, and Tax-Efficient Structured Emerging Markets Funds may not
take place contemporaneously with the determination of the prices of certain
portfolio
                                                                   Prospectus
                                                                              67
<PAGE>
 
   
securities of foreign issuers used in such calculation. Further, under the
Trust's procedures, the prices of foreign securities are determined using
information derived from pricing services and other sources. Information that
becomes known to the Trust or its agents after the time that net asset value
is calculated on any Business Day may be assessed in determining net asset
value per share after the time of receipt of the information, but will not be
used to retroactively adjust the price of the security so determined earlier
or on a prior day. Events affecting the values of portfolio securities that
occur between the time their prices are determined and the close of regular
trading on the Exchange (normally 4:00 p.m., Eastern time) may not be
reflected in the calculation of net asset value. If events materially
affecting the value of such securities occur during such period, then these
securities may be valued at fair value as determined by the Adviser or a Sub-
Adviser and approved in good faith by the Board of Trustees.     
 
  Each Fund's liabilities are allocated among its classes. The total of such
liabilities allocated to a class plus that class's distribution and/or
servicing fees and any other expenses specially allocated to that class are
then deducted from the class's proportionate interest in the Fund's assets,
and the resulting amount for each class is divided by the number of shares of
that class outstanding to produce the class's "net asset value" per share.
Under certain circumstances, the per share net asset value of the
Administrative Class shares of the Funds may be lower than the per share net
asset value of the Institutional Class shares as a result of the daily expense
accruals of the service and/or distribution fees applicable to the
Administrative Class shares. Generally, for Funds that pay income dividends,
those dividends are expected to differ over time by approximately the amount
of the expense accrual differential between a particular Fund's classes.
 
                      DIVIDENDS, DISTRIBUTIONS AND TAXES
 
  Shares begin earning dividends on the effective date of purchase, provided
notification deadlines are met. See "Purchase of Shares." Net investment
income from interest and dividends, if any, will be declared and paid
quarterly to shareholders of record by the Renaissance, Equity Income, Value,
and Balanced Funds. Net investment income from interest and dividends, if any,
will be declared and paid at least annually to shareholders of record by the
other Funds. Any net capital gains from the sale of portfolio securities will
be distributed no less frequently than once annually. Net short-term capital
gains may be paid more frequently. Dividend and capital gain distributions of
a Fund will be reinvested in additional shares of that Fund unless the
shareholder elects to have them paid in cash. Dividends from net investment
income with respect to Administrative Class shares will be lower than those
paid with respect to Institutional Class shares, reflecting the payment of
service and/or distribution fees by that class.
 
  Each Fund intends to qualify as a regulated investment company annually and
to elect to be treated as a regulated investment company under the Internal
Revenue Code of 1986, as amended (the "Code"). As such, a Fund generally will
not pay federal income tax on the income and gains it pays as dividends to its
shareholders. In order to avoid a 4% federal excise tax, each Fund intends to
distribute each year substantially all of its net income and gains.
   
  Shareholders subject to U.S. federal income tax will be subject to tax on
dividends received from a Fund, regardless of whether received in cash or
reinvested in additional shares. Distributions received by tax-exempt
shareholders generally will not be subject to federal income tax to the extent
permitted under applicable tax law. All shareholders must treat dividends,
other than capital gain dividends, exempt-interest dividends, if any, and
dividends that represent a return of capital to shareholders, as ordinary
income. In particular, distributions derived from short-term gains will be
treated as ordinary income. Dividends, if any, derived from interest on
certain U.S. Government securities may be exempt from state and local taxes,
although interest on mortgage-backed U.S. Government securities is generally
not so exempt. While the Tax-Efficient Equity and Tax-Efficient Structured
Emerging Markets Funds seek to     
 
68
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
minimize taxable distributions, the Funds may be expected to earn and
distribute taxable income and may also be expected to realize and distribute
capital gains from time to time.
   
  Dividends designated by a Fund as capital gain dividends derived from the
Fund's net capital gains (that is, the excess of its net long-term capital
gains over its net short-term capital losses) are taxable to shareholders as
long-term capital gain (generally subject to a 20% tax rate for shareholders
who are individuals) except as provided by an applicable tax exemption. Any
distributions that are not from a Fund's net investment income or net capital
gain may be characterized as a return of capital to shareholders or, in some
cases, as capital gain. Certain dividends declared in October, November or
December of a calendar year are taxable to shareholders (who otherwise are
subject to tax on dividends) as though received on December 31 of that year if
paid to shareholders during January of the following calendar year. Each Fund
will advise shareholders annually of the amount and nature of the dividends
paid to them.     
 
  Current federal tax law requires the holder of a U.S. Treasury or other fixed
income zero coupon security to accrue as income each year a portion of the
discount at which the security was purchased, even though the holder receives
no interest payment in cash on the security during the year. In addition, pay-
in-kind securities will give rise to income which is required to be distributed
and is taxable even though the Fund holding the security receives no interest
payment in cash on the security during the year. Also, a portion of the yield
on certain high yield securities (including certain pay-in-kind securities)
issued after July 10, 1989 may be treated as dividends. Accordingly, each Fund
that holds the foregoing kinds of securities may be required to pay out as an
income distribution each year an amount which is greater than the total amount
of cash interest the Fund actually received. Such distributions may be made
from the cash assets of the Fund or by liquidation of portfolio securities, if
necessary. The Fund may realize gains or losses from such liquidations. In the
event the Fund realizes net capital gains from such transactions, its
shareholders may receive a larger capital gain distribution, if any, than they
would in the absence of such transactions.
 
  Taxable shareholders should note that the timing of their investment or
redemptions could have undesirable tax consequences. Dividends and
distributions on a Fund's shares are generally subject to federal income tax as
described herein to the extent they do not exceed the Fund's realized income
and gains, even though such dividends and distributions may economically
represent a return of a particular shareholder's investment. Such distributions
are likely to occur in respect of shares purchased at a time when the Fund's
net asset value reflects gains that are either unrealized or realized but not
distributed. Such realized gains may be required to be distributed even when a
Fund's net asset value also reflects unrealized losses.
   
  As discussed above under "Characteristics and Risks of Securities and
Investment Techniques--Investment in Investment Companies," each Fund may
invest in the securities of other investment companies. Investments in other
investment companies may increase the amount of taxes payable by shareholders
of the Funds. For more information on the tax consequences of such investments,
see "Taxation" in the Statement of Additional Information.     
 
  The preceding discussion relates only to federal income tax; the consequences
under other tax laws may differ. Shareholders should consult their tax advisers
as to the possible application of foreign, state and local income tax laws to
Trust dividends and capital gain distributions. For additional information
relating to the tax aspects of investing in a Fund, see the Statement of
Additional Information.
                                                                   Prospectus
                                                                              69
<PAGE>
 
                               OTHER INFORMATION
 
Capitalization
 
  The Trust was organized as a Massachusetts business trust on August 24, 1990,
and currently consists of twenty-eight portfolios that are operational, twenty-
four of which are described in this Prospectus. Other portfolios may be offered
by means of a separate prospectus. The Board of Trustees may establish
additional portfolios in the future. The capitalization of the Trust consists
of an unlimited number of shares of beneficial interest. When issued, shares of
the Trust are fully paid, non-assessable and freely transferable.
 
  Under Massachusetts law, shareholders could, under certain circumstances, be
held liable for the obligations of the Trust. However, the Second Amended and
Restated Agreement and Declaration of Trust (the "Declaration of Trust") of the
Trust disclaims shareholder liability for acts or obligations of the Trust and
requires that notice of such disclaimer be given in each agreement, obligation
or instrument entered into or executed by the Trust or the Trustees. The
Declaration of Trust also provides for indemnification out of a Fund's property
for all loss and expense of any shareholder of that Fund held liable on account
of being or having been a shareholder. Thus, the risk of a shareholder
incurring financial loss on account of shareholder liability is limited to
circumstances in which such disclaimer is inoperative or the Fund of which he
or she is or was a shareholder is unable to meet its obligations, and thus
should be considered remote.
 
Multiple Classes of Shares
   
  In addition to Institutional Class shares and Administrative Class shares,
certain Funds also offer up to four additional classes of shares, Class A,
Class B, Class C, and Class D, through separate prospectuses. This Prospectus
relates only to Institutional Class and Administrative Class shares of the
Funds. The other classes of the Funds have different sales charges and expense
levels, which will affect performance accordingly. To obtain more information
about the other classes of shares, please call the Distributor at 1-800-426-
0107 (for Class A, Class B, and Class C) or 1-888-87-PIMCO (for Class D).     
 
  Institutional Class and Administrative Class shares of each Fund represent
interests in the assets of that Fund, and each class has identical dividend,
liquidation and other rights and the same terms and conditions, except that
expenses related to the distribution and/or shareholder servicing of
Administrative Class shares are borne solely by such class, and each class may,
at the Trustees' discretion, also pay a different share of other expenses, not
including advisory or custodial fees or other expenses related to the
management of the Trust's assets, if these expenses are actually incurred in a
different amount by that class, or if the class receives services of a
different kind or to a different degree than the other classes. All other
expenses are allocated to each class on the basis of the net asset value of
that class in relation to the net asset value of the particular Fund.
 
Voting
 
  Each class of shares of each Fund has identical voting rights, except that
each class of shares has exclusive voting rights on any matter submitted to
shareholders that relates solely to that class, and has separate voting rights
on any matter submitted to shareholders in which the interests of one class
differ from the interests of any other class. The Administrative Class shares
have exclusive voting rights with respect to matters pertaining to any
Distribution Plan applicable to that class. These shares are entitled to vote
at meetings of shareholders. Matters submitted to shareholder vote must be
approved by each Fund separately except (i) when required by the 1940 Act,
shares shall be voted together, and (ii) when the Trustees have determined that
the matter does not affect all Funds, then only shareholders
 
70
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
of the Fund or Funds affected shall be entitled to vote on the matter. All
classes of shares of a Fund will vote together, except with respect to a
Distribution Plan or agreement applicable to a class of shares or when a class
vote is required as specified above or otherwise by the 1940 Act. Shares are
freely transferable, are entitled to dividends as declared by the Trustees and,
in liquidation of the Trust, are entitled to receive the net assets of their
Fund, but not of the other Funds. The Trust does not generally hold annual
meetings of shareholders and will do so only when required by law. Shareholders
may remove Trustees from office by votes cast in person or by proxy at a
meeting of shareholders or by written consent. Such a meeting will be called at
the written request of the holders of 10% of the Trust's outstanding shares.
   
  Shares entitle their holders to one vote per share (with proportionate voting
for fractional shares). As of March 10, 1999, the following were shareholders
of record of at least 25% of the outstanding voting securities of the indicated
Funds: Pacific Mutual Life Insurance Company Employee's Retirement Plan Trust
(Newport Beach, California) and Charles Schwab & Co. (San Francisco,
California) with respect to the Emerging Markets Fund; Pacific Life Foundation
(Newport Beach, California) and California Race Track Association (LaVerne,
California) with respect to the Core Equity Fund; Pacific Mutual Life Insurance
Company (Newport Beach, California) with respect to the Mid-Cap Equity Fund;
Pacific Asset Management LLC (Newport Beach, California) with respect to the
International Growth Fund; and Pacific Mutual Life Insurance Company Employee's
Retirement Plan Trust (Newport Beach, California) with respect to the Enhanced
Equity Fund. To the extent such shareholders are also the beneficial owners of
such securities, they may be deemed to control (as that term is defined in the
1940 Act) the relevant Fund. As used in this Prospectus, the phrase "vote of a
majority of the outstanding shares" of a Fund (or the Trust) means the vote of
the lesser of: (1) 67% of the shares of the Fund (or the Trust) present at a
meeting, if the holders of more than 50% of the outstanding shares are present
in person or by proxy; or (2) more than 50% of the outstanding shares of the
Fund (or the Trust).     
 
Performance Information
 
  From time to time the Trust may make available certain information about the
performance of the Institutional Class and Administrative Class shares of some
or all of the Funds. Information about a Fund's performance is based on that
Fund's (or its predecessor's) record to a recent date and is not intended to
indicate future performance. Performance information is computed separately for
each Fund's Institutional Class and Administrative Class shares in accordance
with the formulas described below. Because Administrative Class shares bear the
expense of service and/or distribution fees, it is expected that, under normal
circumstances, the level of performance of a Fund's Administrative Class shares
will be lower than that of the Fund's Institutional Class shares.
 
  The total return of Institutional Class and Administrative Class shares of
all Funds may be included in advertisements or other written material. When a
Fund's total return is advertised with respect to its Institutional Class and
Administrative Class shares, it will be calculated for the past year, the past
five years, and the past ten years (or if the Fund has been offered for a
period shorter than one, five or ten years, that period will be substituted)
since the establishment of the Fund or its predecessor series of PIMCO Advisors
Funds, as more fully described in the Statement of Additional Information. For
periods prior to the initial offering date of Institutional Class or
Administrative Class shares, total return presentations for a class will be
based on the historical performance of an older class of the Fund (if any)
restated, as necessary, to reflect that there are no sales charges associated
with Institutional Class or Administrative Class shares. The older class to be
used in each case is set forth in the Statement of Additional Information. For
these purposes, the performance of the older class will also be restated to
reflect any different operating expenses (such as different administrative fees
and/or 12b-1/servicing fee charges) associated with the newer
                                                                   Prospectus
                                                                              71
<PAGE>
 
class. In certain cases, such a restatement will result in Institutional Class
or Administrative Class performance which is higher than if the performance of
the older class were not restated to reflect the different operating expenses
of the newer class. In such cases, the Trust's advertisements will also, to the
extent appropriate, show the lower performance figure reflecting the actual
operating expenses incurred by the older class for periods prior to the initial
offering date of the newer class. Total return for each class is measured by
comparing the value of an investment in the Fund at the beginning of the
relevant period to the redemption value of the investment in the Fund at the
end of the period (assuming immediate reinvestment of any dividends or capital
gains distributions at net asset value). Total return may be advertised using
alternative methods that reflect all elements of return, but that may be
adjusted to reflect the cumulative impact of alternative fee and expense
structures.
 
  Quotations of yield for a Fund or class will be based on the investment
income per share (as defined by the SEC) during a particular 30-day (or one-
month) period (including dividends and interest), less expenses accrued during
the period ("net investment income"), and will be computed by dividing net
investment income by the maximum public offering price per share on the last
day of the period.
 
  The Funds may also provide current distribution information to their
shareholders in shareholder reports or other shareholder communications, or in
certain types of sales literature provided to prospective investors. Current
distribution information for a particular class of a Fund will be based on
distributions for a specified period (i.e., total dividends from net investment
income), divided by the relevant class net asset value per share on the last
day of the period and annualized. The rate of current distributions does not
reflect deductions for unrealized losses from transactions in derivative
instruments such as options and futures, which may reduce total return. Current
distribution rates differ from standardized yield rates in that they represent
what a class of a Fund has declared and paid to shareholders as of the end of a
specified period rather than the Fund's actual net investment income for that
period.
   
  The Adviser and each Sub-Adviser may also report to shareholders or to the
public in advertisements concerning its performance as adviser to clients other
than the Funds, and on its comparative performance or standing in relation to
other money managers. Such comparative information may be compiled or provided
by independent ratings services or by news organizations. Any performance
information, whether related to the Funds, the Adviser, or the Sub-Advisers,
should be considered in light of the Fund's investment objectives and policies,
characteristics and quality of the Funds, and the market conditions during the
time period indicated, and should not be considered to be representative of
what may be achieved in the future.     
 
  Investment results of the Funds will fluctuate over time, and any
representation of the Funds' total return or yield for any prior period should
not be considered as a representation of what an investor's total return or
yield may be in any future period. The Trust's Annual and Semi-Annual Reports
contain additional performance information for the Funds and are available upon
request, without charge, by calling 1-800-927-4648 (Current Shareholders), or
1-800-800-0952 (New Accounts).
 
72
 PIMCO Funds: Multi-Manager Series
<PAGE>
                ----------------------------------------------------------------
PIMCO Funds:    INVESTMENT ADVISER AND ADMINISTRATOR
Multi-Manager   PIMCO Advisors L.P., 800 Newport Center Drive, Newport Beach, 
Series          CA 92660
                ----------------------------------------------------------------
                   
                CUSTODIAN     
                Investors Fiduciary Trust Company, 801 Pennsylvania, Kansas 
                City,
                MO 64105
                ----------------------------------------------------------------
                   
                TRANSFER AGENT     
                   
                National Financial Data Services, 330 West 9th Street, 4th 
                Floor,
                Kansas City, MO /64105/     
                       
                ----------------------------------------------------------------
                INDEPENDENT ACCOUNTANTS
                PricewaterhouseCoopers LLP, 1055 Broadway, Kansas City, MO 64105
                ----------------------------------------------------------------
                LEGAL COUNSEL
                Ropes & Gray, One International Place, Boston, MA 02110
                ----------------------------------------------------------------
<PAGE>
 
For More Information

The following documents are available that offer further information on the
Funds of PIMCO Funds: Multi-Manager Series. 

Annual/Semi-Annual Reports to Shareholders  The Trust's annual and semi-annual
reports include a discussion of the market conditions and investment strategies
that significantly affected the Funds' performance during its last fiscal year
or other period.


Statement of Additional Information (SAI)  The SAI contains additional
information about the Funds. A current SAI has been filed with the Securities
and Exchange Commission, and is incorporated into this prospectus by reference.

To request a free copy of these documents or to make inquiries about the Funds,
please write or call: 

PIMCO Funds: 
Multi-Manager Series 
840 Newport Center Drive
Suite 300 
Newport Beach, CA 92660 

Telephone: 
1-800-927-4648 
1-800-987-4626  (PIMCO Infolink Audio Response Network)

Information about the Trust (including the SAI) can be reviewed and copied at
the Securities and Exchange Commission's Public Reference Room in Washington,
D.C. Information on the operation of the public reference room may be obtained
by calling the Commission at 1-800-SEC-0330. Reports and other information about
the Trust are available on the Commission's Internet site at www.sec.gov, and
copies of that information may be obtained, upon payment of a duplicating fee,
by writing the Public Reference Section of the Commission, Washington, D.C.
20549-6009.

SEC File Number: 811-6161

P I M C O 
- ---------
    FUNDS

840 Newport Center Drive
Suite 300 
Newport Beach, CA 92660
<PAGE>
 
                                                        
                                                   Class A, B and C Shares
                                                             April 1, 1999      


                      PIMCO Funds Asset Allocation Series

                                   Prospectus

               Actively managed portfolios of select PIMCO Funds

PIMCO Funds Asset Allocation Series consists of three actively managed mutual
funds that invest in a diversified portfolio of PIMCO Funds. In addition to
broad diversification, each Portfolio provides access to the extensive asset
allocation and investment management capabilities of PIMCO Advisors L.P. and its
affiliates.

90/10 Portfolio 

Seeks long-term capital appreciation. The Portfolio normally invests
approximately 90% of its assets in PIMCO Stock Funds and 10% in PIMCO Bond
Funds.

60/40 Portfolio 

Seeks long-term capital appreciation and current income. The Portfolio normally
invests approximately 60% of its assets in PIMCO Stock Funds and 40% in PIMCO
Bond Funds.

30/70 Portfolio 

Seeks current income, with long-term capital appreciation as a secondary
objective. The Portfolio normally invests approximately 30% of its assets in
PIMCO Stock Funds and 70% in PIMCO Bond Funds.


                                                                       P I M C O
                                                                      ----------
                                                                           FUNDS
                                                                           -----
<PAGE>
 
            PIMCO Funds: Multi-Manager Series
            Prospectus
               
            April 1, 1999     

 
            PIMCO Funds Asset Allocation Series
 
90/10 Portfolio
60/40 Portfolio
30/70 Portfolio

            PIMCO Funds: Multi-Manager Series (the "Trust") is an open-end se-
            ries management investment company offering three diversified in-
            vestment portfolios (each a "Portfolio") in this Prospectus, each
            with different investment objectives and strategies. The Portfo-
            lios are professionally-managed series of the Trust designed to
            take advantage of the benefits of asset allocation. Each Portfolio
            seeks to achieve its particular investment objective by investing
            within specified equity and fixed income ranges among a number of
            other mutual funds in the PIMCO Funds family ("Underlying Funds"
            or "Funds"). The address of PIMCO Funds: Multi-Manager Series is
            840 Newport Center Drive, Suite 300, Newport Beach, CA 92660.
 
            PIMCO Advisors L.P. ("PIMCO Advisors" or the "Adviser") serves as
            investment adviser to the Portfolios and determines how the assets
            of each Portfolio are allocated among the Underlying Funds. PIMCO
            Advisors and its affiliates also provide advisory services to the
            Underlying Funds. See "Management of the Portfolios."
               
            Each Portfolio offers three classes of shares in this Prospectus:
            Class A shares (generally sold subject to an initial sales
            charge), Class B shares (sold subject to a contingent deferred
            sales charge) and Class C shares (sold subject to an asset based
            sales charge). The Portfolios also offer Institutional Class and
            Administrative Class shares through a separate prospectus. See
            "Description of the Trust--Multiple Classes of Shares."     
 
            This Prospectus concisely describes the information investors
            should know before investing in Class A, Class B and Class C
            shares of the Portfolios. Please read this Prospectus carefully
            and keep it for further reference.
 
            Information about the investment objective of each Portfolio and
            of the investment policies and restrictions applicable to each
            Portfolio are set forth in this Prospectus. There can be no assur-
            ance that the investment objective of any Portfolio will be
            achieved. Because the market value of each Portfolio's investments
            will change, the investment returns and net asset value per share
            of each Portfolio will vary.
               
            A Statement of Additional Information, dated April 1, 1999, as
            amended or supplemented from time to time, is available free of
            charge by writing to PIMCO Funds Distributors LLC (the "Distribu-
            tor"), 2187 Atlantic Street, Stamford, Connecticut 06902, or by
            telephoning 1-800-426-0107. In addition, a Trust Prospectus dated
            April 1, 1999 and a Prospectus of PIMCO Funds: Pacific Investment
            Management Series dated April 1, 1999, each as amended or supple-
            mented from time to time (together, the "Underlying Fund Prospec-
            tuses"), relating to Institutional Class shares of the Underlying
            Funds, are available free of charge from the Distributor. The
            Statement of Additional Information and the Underlying Fund Pro-
            spectuses, which contain more detailed information about the
            Trust, the Portfolios and/or the Underlying Funds, have each been
            filed with the Securities and Exchange Commission and are incorpo-
            rated by reference in this Prospectus. The Securities and Exchange
            Commission maintains an Internet World Wide Web site (at
            www.sec.gov) which contains the Statement of Additional Informa-
            tion and materials that are incorporated by reference into this
            Prospectus and the Statement of Additional Information, the Under-
            lying Fund Prospectuses, and other information about the Trust,
            the Portfolios and the Underlying Funds.     
 
            These securities have not been approved or disapproved by the Se-
            curities and Exchange Commission or any state securities commis-
            sion, nor has the Securities and Exchange Commission or any state
            securities commission passed upon the accuracy or adequacy of this
            Prospectus. Any representation to the contrary is a criminal of-
            fense.
 
            Shares of the Portfolios are not deposits or obligations of, or
            guaranteed or endorsed by, any financial institution, and the
            shares are not federally insured by the Federal Deposit Insurance
            Corporation, the Federal Reserve Board or any other agency, and
            involve risk, including the possible loss of principal.
 
                 TABLE OF CONTENTS

<TABLE>                                               
                 <S>                                  <C>       
                 Overview..............................3    
                 Schedule of Fees......................4    
                 Financial Highlights..................6    
                 Investment Objectives and Policies....8    
                 Underlying Funds.....................12    
                 Performance Information..............18    
                 How to Buy Shares....................19    
                 Alternative Purchase Arrangements....23    
                 Exchange Privilege...................31     
                 How to Redeem........................32 
                 Distributor and Distribution and        
                  Servicing Plans.....................36                  
                 How Net Asset Value Is Determined....38                   
                 Distributions........................38                   
                 Taxes................................39                   
                 Management of the Portfolios.........40                   
                 Description of the Trust.............42                   
                 Mailings to Shareholders.............44                    
</TABLE>    


2  PIMCO Funds Asset Allocation Series
<PAGE>
 
            Overview
 
            PIMCO Funds: Multi-Manager Series (the "Trust") is an open-end se-
            ries management investment company organized as a Massachusetts
            business trust on August 24, 1990. This Prospectus describes three
            separate diversified investment portfolios (the "Portfolios") of-
            fered by the Trust, PIMCO Funds Asset Allocation Series--90/10
            Portfolio (the "90/10 Portfolio"), PIMCO Funds Asset Allocation
            Series--60/40 Portfolio (the "60/40 Portfolio") and PIMCO Funds
            Asset Allocation Series--30/70 Portfolio (the "30/70 Portfolio").
 
               The Portfolios are intended for investors who prefer to have
            their asset allocation decisions made by professional money manag-
            ers. Each Portfolio has a distinct investment objective which it
            seeks to achieve by investing within specified equity and fixed
            income ranges among certain series ("Underlying Funds" or "Funds")
            of the Trust and PIMCO Funds: Pacific Investment Management Se-
            ries. PIMCO Advisors serves as investment adviser for each Fund of
            the Trust and its affiliate, Pacific Investment Management Company
            ("Pacific Investment Management"), serves as investment adviser
            for each Fund of PIMCO Funds: Pacific Investment Management Se-
            ries. Some of the Underlying Funds invest primarily in equity se-
            curities ("Underlying Stock Funds"); other Funds invest primarily
            in fixed income securities, including money market instruments
            ("Underlying Bond Funds"). The Portfolios are named in accordance
            with their equity/fixed income allocation targets. For instance,
            the 90/10 Portfolio will normally invest approximately 90% of its
            assets in Underlying Stock Funds and 10% of its assets in Under-
            lying Bond Funds. The following summarizes certain key information
            relating to the Portfolios and is qualified in its entirety by the
            more detailed information contained elsewhere in this Prospectus.
 
          
          
<TABLE>
<CAPTION>

Portfolio  PIMCO Funds
Profiles   Asset Allocation Series Investment Objective                              Allocation Strategy
           -----------------------------------------------------------------------------------------------
<S>        <C>                     <C>                                               <C> 
           90/10 Portfolio         Long-term capital appreciation                    Under normal conditions,
                                                                                     approximately 90% of the
                                                                                     Portfolio's assets will
                                                                                     be allocated among
                                                                                     Underlying Stock Funds
                                                                                     and 10% among Underlying
                                                                                     Bond Funds.
           --------------------------------------------------------------------------------------------------
           60/40 Portfolio         Long-term capital appreciation and current income Under normal conditions,
                                                                                     approximately 60% of the
                                                                                     Portfolio's assets will
                                                                                     be allocated among
                                                                                     Underlying Stock Funds
                                                                                     and 40% among Underlying
                                                                                     Bond Funds.
           --------------------------------------------------------------------------------------------------
           30/70 Portfolio         Current income, with long-term                    Under normal conditions,
                                   capital appreciation as a secondary objective     approximately 30% of the
                                                                                     Portfolio's assets will
                                                                                     be allocated among
                                                                                     Underlying Stock Funds
                                                                                     and 70% among Underlying
                                                                                     Bond Funds.
</TABLE>
 
 
               The Underlying Funds have different investment objectives and
            policies and different degrees of potential investment risk and
            reward. Based on the allocation strategies listed above, an in-
            vestor should choose among the Portfolios based on personal objec-
            tives, investment time horizon, tolerance for risk and personal
            financial circumstances. For example, because the 90/10 Portfolio
            will normally invest approximately 90% of its assets in Underlying
            Stock Funds, this Portfolio might be suitable for an investor with
            a relatively long time horizon who seeks long-term capital appre-
            ciation potential and has a fairly high tolerance for risk and
            volatility. An investor with a shorter time horizon who seeks a
            balance of income and long-term capital appreciation and has less
            tolerance for risk and volatility might choose the 60/40 Portfo-
            lio, which invests in a fairly balanced portfolio of Underlying
            Stock and Bond Funds. An investor who seeks a higher level of cur-
            rent income combined with some potential for long-term capital ap-
            preciation and has a lower tolerance for risk and volatility might
            choose the 30/70 Portfolio, which will normally invest approxi-
            mately 70% of its assets in Underlying Bond Funds. While each
            Portfolio provides a relatively high level of diversification in
            comparison to most mutual funds, a single Portfolio may not be
            suitable as a complete investment program. For a more complete de-
            scription of the investment objectives and policies of the Portfo-
            lios, please see "Investment Objectives and Policies."
 
               Because each Portfolio will invest all of its assets in the Un-
            derlying Funds, each Portfolio's investment performance is di-
            rectly related to the investment performance of the Underlying
            Funds in which it invests. The ability of a Portfolio to realize
            its investment objective will depend upon the extent to which the
            Underlying Funds realize their objectives. The value of the Under-
            lying Funds' investments, and the net asset values of the shares
            of both the Underlying Funds and the Portfolios, will fluctuate in
            response to changes in market and economic conditions, as well as
            the financial condition and prospects of issuers in which the Un-
            derlying Funds invest.

                                                                
                                                             Prospectus     

 
                                       3
<PAGE>
 

 
               The possible use of certain investment techniques by an Under-
            lying Fund, including various derivative instruments such as
            futures contracts, options and swap agreements, will subject the
            Fund to greater risk than Funds that do not employ such tech-
            niques. In addition, investments by certain Underlying Funds in
            small market capitalization companies, foreign issuers (including
            emerging market issuers) and foreign currencies, illiquid securi-
            ties and other instruments will expose those Funds to a higher de-
            gree of risk and price volatility. Some Underlying Funds may also
            invest in fixed income securities rated below investment grade
            (commonly referred to as "high yield" securities or "junk" bonds),
            which are considered to be speculative by traditional investment
            standards. Each Portfolio may be subject to these and other risks
            associated with investments in the Underlying Funds depending upon
            the Portfolio's asset allocation strategy. For a description of
            the various risks associated with the Portfolios and the Under-
            lying Funds, see "Investment Objectives and Policies" and "Under-
            lying Funds" in this Prospectus, "Investment Objectives and Poli-
            cies" in the Statement of Additional Information and "Characteris-
            tics and Risks of Securities and Investment Techniques" in the Un-
            derlying Fund Prospectuses, which are incorporated herein by ref-
            erence and are available free of charge by telephoning the Dis-
            tributor at 1-800-426-0107.
 
               Potential investors in the Portfolios should realize that they
            may invest directly in the Underlying Funds and make their own as-
            set allocation decisions. By investing in a Portfolio, an investor
            will incur not only a proportionate share of the expenses of the
            Portfolio but also a portion of the expenses of the Underlying
            Funds in which the Portfolio invests (including investment advi-
            sory and administrative fees charged at the Underlying Fund lev-
            el).  See "Schedule of Fees" and "Management of the Portfolios--
            Underlying Fund Expenses."
 
            Schedule of Fees
 
            Expenses are one of several factors to consider when investing in
            Class A, Class B or Class C shares of the Portfolios. The follow-
            ing tables and Examples summarize the expenses of each Portfolio
            that are borne by its Class A, Class B and Class C shareholders
            based on estimated expenses for the Portfolio's current fiscal
            year.
 
               You should bear in mind that shareholders of each Portfolio
            bear indirectly the expenses of the Underlying Funds in which the
            Portfolio invests. The Portfolios will invest only in Institu-
            tional Class shares of the Underlying Funds and will not pay any
            sales charges or 12b-1 fees in connection with their investments
            in the Underlying Funds. The Portfolios will, however, indirectly
            bear their pro rata share of the fees and expenses (including ad-
            visory and administrative fees) incurred by the Underlying Funds
            that are borne by all Institutional Class shareholders. Because
            the Underlying Funds have varied fee and expense levels and the
            Portfolios will own different proportions of the Underlying Funds
            at different times, the actual fees and expenses indirectly in-
            curred by the Portfolios will vary.
 
 
 
<TABLE>
<CAPTION>
                                              Class A     Class B     Class C
                                              Shares      Shares      Shares
             ------------------------------------------------------------------
Shareholder  <S>                              <C>         <C>         <C>
Transaction  Maximum initial sales charge im-
Expenses     posed on purchases
             (as a percentage of offering
             price at time of purchase)
             90/10 Portfolio and 60/40 
             Portfolio                           5.50%       None        None
             30/70 Portfolio                     4.50%       None        None
             ------------------------------------------------------------------
             Maximum sales charge imposed on
             reinvested dividends
             (as a percentage of net asset
             value at time of purchase)           None       None        None
             ------------------------------------------------------------------
             Maximum contingent deferred sales
             charge ("CDSC")
             (as a percentage of original
             purchase price)                     1%(/1/)    5%(/2/)     1%(/3/)
             ------------------------------------------------------------------
             Exchange Fee                         None       None        None
</TABLE>
             
 
            1. Imposed only in certain circumstances where Class A shares are
               purchased without a front-end sales charge at the time of pur-
               chase. See "Alternative Purchase Arrangements."
            2. The maximum CDSC is imposed on shares redeemed in the first
               year. For shares held longer than one year, the CDSC declines
               according to the schedule set forth under "Alternative Purchase
               Arrangements--Deferred Sales Charge Alternative--Class B
               Shares."
            3. The CDSC on Class C shares is imposed only on shares redeemed
               in the first year.

PIMCO Funds Asset Allocation Series
 
                                       4
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                              
                                                                                                              
                                                                                          Example: You would     
                                                                                          pay the following    Example: You would   
                                                                                          expenses on a        pay the following    
                                                                                          $1,000 investment    expenses on a $1,000 
                                                                                          assuming (1) 5%      investment assuming 
                                                                                          annual return and    (1) 5% annual return 
                              Annual Portfolio Operating Expenses                         (2) redemption at    and (2) no           
                              (As a percentage of average net assets):                    the end of each      redemption:         
                                                                         Total            time period:                              
           PIMCO Funds                 Admini-             Underlying    Portfolio        
           Asset Allocation   Advisory strative  12b-1     Fund          Operating         One       Three       One       Three
           Series             Fees     Fees(/1/) Fees(/2/) Expenses(/3/) Expenses(/3/)     Year      Years       Year      Years
           ---------------------------------------------------------------------------------------------------------------------- 
           <S>                <C>      <C>       <C>       <C>           <C>               <C>       <C>         <C>       <C>
Class A    90/10 Portfolio    None     .40%       .25%     .79%          1.44%             $   69    $   98      $   69    $   98
Shares     ----------------------------------------------------------------------------------------------------------------------
           60/40 Portfolio    None     .40        .25      .67           1.32                  68        95          68        95
           ----------------------------------------------------------------------------------------------------------------------
           30/70 Portfolio    None     .40        .25      .55           1.20                  57        81          57        81
                                                                                                                         
Class B    90/10 Portfolio    None     .40       1.00      .79           2.19                  72        99          22        69
Shares     ----------------------------------------------------------------------------------------------------------------------
           60/40 Portfolio    None     .40       1.00      .67           2.07                  71        95          21        65
           ----------------------------------------------------------------------------------------------------------------------
           30/70 Portfolio    None     .40       1.00      .55           1.95                  70        91          20        61
                                                                                                                         
Class C    90/10 Portfolio    None     .40       1.00      .79           2.19                  32        69          22        69
Shares     ----------------------------------------------------------------------------------------------------------------------
           60/40 Portfolio    None     .40       1.00      .67           2.07                  31        65          21        65
           ----------------------------------------------------------------------------------------------------------------------
           30/70 Portfolio    None     .40       1.00      .55           1.95                  30        61          20        61
</TABLE>                                                                      
            1. The Administrative Fees for each Portfolio are subject to re- 
               duction to the extent that the average net assets attributable
               in the aggregate to the Portfolio's Class A, Class B and Class
               C shares exceed $2.5 billion. See "Management of the Portfo-  
               lios--Administrative Fees."                                   
            2. 12b-1 fees which are equal to .25% represent servicing fees   
               which are paid annually to the Distributor and repaid to par- 
               ticipating brokers, certain banks and other financial interme-
               diaries. 12b-1 fees which exceed .25% represent aggregate dis-
               tribution and servicing fees. See "Distributor and Distribution
               and Servicing Plans."                                          
            3. Based on estimated expenses for the current fiscal year. Under-
               lying Fund Expenses for each Portfolio are estimated based upon
               the initial allocation of each Portfolio's assets among the Un-
               derlying Funds and upon the total annual operating expenses of 
               each Underlying Fund. For a listing of the expenses associated 
               with each Underlying Fund, please see "Management of the Port-
               folios--Underlying Fund Expenses." Total Portfolio Operating
               Expenses and the Examples set forth above are based on esti-
               mates of the Underlying Fund Expenses each Portfolio will in-
               cur. Actual Underlying Fund Expenses for each Portfolio are ex-
               pected to vary with changes in the allocation of the Portfo-
               lio's assets, and may be higher or lower than those shown
               above.
 
            The purpose of the foregoing tables is to assist investors in un-
            derstanding the various costs and expenses of the Trust that are
            borne directly or indirectly by Class A, Class B and Class C
            shareholders of the Portfolios. The Examples for Class A shares
            assume payment of the current maximum applicable sales load. Due
            to the 12b-1 distribution fee imposed on Class B and Class C
            shares, a Class B or Class C shareholder of a Portfolio may, de-
            pending on the length of time the shares are held, pay more than
            the economic equivalent of the maximum front-end sales charges
            permitted by relevant rules of the National Association of Securi-
            ties Dealers, Inc.
 
            NOTE: The figures shown in the Examples are entirely hypothetical.
            They are not representations of past or future performance or ex-
            penses; actual performance and/or expenses may be more or less
            than shown.
                                                                
                                                             Prospectus     
                                       5
                               
<PAGE>

Financial Highlights
   
The financial highlights set forth on the following pages present certain in-
formation and ratios as well as performance information for the Portfolios.
Information for the periods ended December 31, 1998 is included in the Decem-
ber 31, 1998 PIMCO Funds Semi-Annual Report (relating to Class A, B and C
shares of the Portfolios) and is unaudited. The Semi-Annual Report is incorpo-
rated by reference in the Statement of Additional Information and may be ob-
tained without charge from the Distributor. Financial Statements and related
notes are also incorporated by reference in the Statement of Additional Infor-
mation.     
 
<TABLE>   
<CAPTION>
Selected Per Share Data                               Net Realized/                  Dividends  Dividends in  Distributions
for the Period Ended:    Net Asset Value Net          Unrealized     Total Income    From Net   Excess of Net From Net
                         Beginning       Investment   Gain on        From Investment Investment Investment    Realized Capital
                         of Period       Income       Investments    Operations      Income     Income        Gains
                         --------------- ----------   -------------  --------------- ---------- ------------- ----------------
<S>                      <C>             <C>          <C>            <C>             <C>        <C>           <C>
90/10 Portfo-
 lio
 Class A
 09/30/98-
  12/31/98 +                $  10.00       $ 0.18 (a)    $ 1.29 (a)     $   1.47      $ (0.18)    $   0.00        $   0.00
 Class B
 09/30/98-
  12/31/98 +                   10.00         0.18 (a)      1.27 (a)         1.45        (0.18)        0.00            0.00
 Class C
 09/30/98-
  12/31/98 +                   10.00         0.18 (a)      1.27 (a)         1.45        (0.18)        0.00            0.00
60/40 Portfo-
 lio
 Class A
 09/30/98-
  12/31/98 +                $  10.00       $ 0.19 (a)    $ 0.82 (a)     $   1.01      $ (0.19)    $   0.00        $   0.00
 Class B
 09/30/98-
  12/31/98 +                   10.00         0.18 (a)      0.81 (a)         0.99        (0.18)        0.00            0.00
 Class C
 09/30.98-
  12/31/98 +                   10.00         0.18 (a)      0.81 (a)         0.99        (0.18)        0.00            0.00
30/70 Portfo-
 lio
 Class A
 09/30/98-
  12/31/98 +                $  10.00       $ 0.20 (a)    $ 0.33 (a)     $   0.53      $ (0.20)    $   0.00        $   0.00
 Class B
 09/30/98-
  12/31/98 +                   10.00         0.19 (a)      0.32 (a)         0.51        (0.19)        0.00            0.00
 Class C
 09/30/98-
  12/31/98 +                   10.00         0.19 (a)      0.31 (a)         0.50        (0.19)        0.00            0.00
<CAPTION>
Selected Per Share Data  Distributions
for the Period Ended:    in Excess of
                         Net Realized
                         Capital Gains
                         -------------
<S>                      <C>
90/10 Portfo-
 lio
 Class A
 09/30/98-
  12/31/98 +               $   0.00
 Class B
 09/30/98-
  12/31/98 +                   0.00
 Class C
 09/30/98-
  12/31/98 +                   0.00
60/40 Portfo-
 lio
 Class A
 09/30/98-
  12/31/98 +               $   0.00
 Class B
 09/30/98-
  12/31/98 +                   0.00
 Class C
 09/30.98-
  12/31/98 +                   0.00
30/70 Portfo-
 lio
 Class A
 09/30/98-
  12/31/98 +               $   0.00
 Class B
 09/30/98-
  12/31/98 +                   0.00
 Class C
 09/30/98-
  12/31/98 +                   0.00
</TABLE>    
   
+ Unaudited     
   
* Annualized     
 (a)Per share amounts based upon average number of shares outstanding during
the period.
       

6   PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
<TABLE>   
<CAPTION>
                                                                                              Ratio of Net
                                                                                  Ratio of    Investment
Distributions  Tax Basis               Net Asset                                  Expenses to Income to
from           Return of Total         Value End of              Net Assets End   Average Net Average Net  Portfolio
Equalization   Capital   Distributions Period       Total Return of Period (000s) Assets      Assets       Turnover Rate
- -------------  --------- ------------- ------------ ------------ ---------------- ----------- ------------ -------------
 
<S>            <C>       <C>           <C>          <C>          <C>              <C>         <C>          <C>
  $   0.00     $   0.00    $  (0.18)     $  11.29       14.24%       $    167         0.65%*      18.37%            0%
 
      0.00         0.00       (0.18)        11.27       14.09             795         1.40*       17.86             0
 
      0.00         0.00       (0.18)        11.27       14.09           1,982         1.40*       17.86             0
 
 
  $   0.00     $   0.00    $  (0.19)     $  10.82       10.07%       $    207         0.65%*      18.69%           12%
 
      0.00         0.00       (0.18)        10.81        9.94           1,443         1.40*       18.40            12
 
      0.00         0.00       (0.18)        10.81        9.94           1,412         1.40*       18.39            12
 
  $   0.00     $   0.00    $  (0.20)     $  10.33        6.02%       $    123         0.65%*      20.11%           11%
 
      0.00         0.00       (0.19)        10.32        5.80           1,036         1.40*       18.94            11
      0.00         0.00       (0.19)        10.31        5.76             615         1.40*       19.48            11
</TABLE>    

                                                                    
                                                                 Prospectus     
 

                                       7
<PAGE>
 
             Investment Objectives and Policies

             The investment objective and general investment policies of each
             Portfolio are described below. There can be no assurance that the
             investment objective of any Portfolio will be achieved. Because
             the market value of each Portfolio's investments will change, the
             net asset value per share of each Portfolio will also vary.

                The Portfolios are intended for investors who prefer to have
             their asset allocation decisions made by professional money manag-
             ers. Each Portfolio seeks to achieve its investment objective by
             investing within specified equity and fixed income ranges among
             the Underlying Funds. Each Underlying Fund is a series of the
             Trust or PIMCO Funds: Pacific Investment Management Series and is
             managed by PIMCO Advisors and/or its affiliates. The Portfolios
             have different investment objectives and policies and degrees of
             potential investment risk and reward depending upon their alloca-
             tion strategies. An investor should choose a Portfolio based on
             personal objectives, investment time horizon, tolerance for risk
             and personal financial circumstances.
 
 
Portfolio    90/10 Portfolio seeks long-term capital appreciation. Under normal
Descriptions conditions, approximately 90% of the Portfolio's assets will be
             allocated among Underlying Stock Funds and 10% among Underlying
             Bond Funds.
 
             60/40 Portfolio seeks long-term capital appreciation and current
             income. Under normal conditions, approximately 60% of the Portfo-
             lio's assets will be allocated among Underlying Stock Funds and
             40% among Underlying Bond Funds.
 
             30/70 Portfolio seeks current income. Long-term capital apprecia-
             tion is a secondary objective. Under normal conditions, approxi-
             mately 30% of the Portfolio's assets will be allocated among Un-
             derlying Stock Funds and 70% among Underlying Bond Funds.

               Unless otherwise noted, each Portfolio's investment objective
             and its restrictions and policies relating to the investment of
             its assets are non-fundamental and may be changed without share-
             holder approval.
 
               PIMCO Advisors serves as the investment adviser to the Portfo-
             lios and determines how each Portfolio's assets are allocated
             among the Underlying Funds. Each Portfolio invests in particular
             Underlying Funds (which may differ from time to time) based on
             various criteria observed by PIMCO Advisors. Among other things,
             PIMCO Advisors analyses the various investment objectives, poli-
             cies and strategies of the Underlying Funds to determine which
             Funds, in combination with others, are appropriate in light of a
             Portfolio's investment objective. PIMCO Advisors then makes allo-
             cation decisions among these Underlying Funds in an attempt to
             achieve the Portfolio's objective. The table below illustrates the
             initial equity and fixed income allocation targets and typical
             ranges for each Portfolio under normal market conditions.
 
             Equity and Fixed Income Ranges
             (as a percentage of each Portfolio's average net assets)
 
<TABLE>
<CAPTION>
                                                                Typical
             PIMCO Funds                               Target     Allocation
             Asset Allocation Series                   Allocation Range*
             ----------------------------------------------------------------
             <S>                                       <C>        <C>
             90/10 Portfolio
              Equity                                   90%        80% - 100%
              Fixed Income (including money market**)  10%         0% -  20%
             ----------------------------------------------------------------
             60/40 Portfolio
              Equity                                   60%        50% -  70%
              Fixed Income (including money market**)  40%        30% -  50%
             ----------------------------------------------------------------
             30/70 Portfolio
              Equity                                   30%        25% -  35%
              Fixed Income (including money market**)  70%        65% -  75%
           
</TABLE>   
           
           * Each Portfolio may temporarily deviate from its asset alloca-
             tion range for defensive purposes.
          ** Each Portfolio may hold a portion of its assets in PIMCO Money
             Market Fund, in part, so that it can readily sell the securities
             and have cash available to pay Portfolio expenses without incur-
             ring capital gains.

PIMCO Funds Asset Allocation Series 
                                       8
<PAGE>
 
               Each Portfolio is authorized to invest in any or all of the Un-
            derlying Funds. However, it is expected that a Portfolio will in-
            vest in only some of the Underlying Funds at any particular time.
            A Portfolio's investment in a particular Underlying Fund may and
            in some cases is expected to exceed 25% of its total assets. To
            the extent that a Portfolio invests a significant portion of its
            assets in an Underlying Fund, it will be particularly sensitive to
            the risks associated with that Fund. Please see "Underlying Funds"
            and "Principal Risks of the Underlying Funds" below for a descrip-
            tion of the Underlying Funds and their attendant risks. The par-
            ticular Underlying Funds in which each Portfolio may invest, the
            equity and fixed income allocation targets and ranges specified
            above, and the percentage of each Portfolio's assets invested from
            time to time in any Underlying Fund or combination of Funds may be
            changed from time to time without the approval of the Portfolio's
            shareholders.
               Each Portfolio's net asset value will fluctuate in response to
            changes in the net asset values of the Underlying Funds in which
            it invests. Each Portfolio will invest all of its assets in Under-
            lying Funds, and may invest up to 100% of its assets in PIMCO
            Money Market Fund (and thereby deviate from its asset allocation
            range) for temporary defensive purposes. A Portfolio may also bor-
            row money for temporary or emergency purposes.
               Each Portfolio is also subject to certain investment restric-
            tions that are described under "Investment Restrictions" in the
            Statement of Additional Information.

     
Overview of PIMCO Advisors' Asset Allocation Committee determines how the
Asset       Portfolios' assets are allocated and reallocated from time to time
Allocation  among the Underlying Funds. The individuals who constitute the As-
            set Allocation Committee and are primarily responsible for making
            asset allocation and other investment decisions for the Portfolios
            are William D. Cvengros, Timothy R. Clark, Robert S. Venable and
            David Young. Please see "Management of the Portfolios" for a de-
            scription of PIMCO Advisors and the individuals on the Asset Allo-
            cation Committee.     
               
               PIMCO Advisors' approach to asset allocation encompasses both
            quantitative and qualitative processes designed to allocate the
            Portfolios' assets among multiple Underlying Funds in order to
            achieve broadly diversified Portfolios. The Asset Allocation Com-
            mittee meets regularly to analyze various economic and market da-
            ta. The Committee also collects and synthesizes multiple proprie-
            tary models maintained by the Sub-Advisers of the Underlying
            Funds. Please see "Underlying Funds--Advisory Arrangements for the
            Underlying Funds" for information about the Sub-Advisers. These
            models are quantitatively compiled by the Committee to provide a
            framework for developing PIMCO Advisors' allocation strategies
            with respect to the major asset classes and sub-classes held by
            the Underlying Funds.     
               The resulting framework assists the Asset Allocation Committee
            in the following ways: (1) it identifies the desired tactical al-
            location ranges for the Portfolios around long-term strategic
            broad asset class and sub-class targets, (2) it identifies indi-
            vidual Funds among the Underlying Funds that are expected to pro-
            vide consistent, quality performance in the various asset classes
            and sub-classes identified for the Portfolios, and (3) it is used
            by the Committee in its on-going evaluation of the equity and
            fixed income markets in an attempt to identify and implement val-
            ue-added tactical shifts for the Portfolios. These tactical shifts
            and resulting reallocations of Portfolio assets are not expected
            to be large or frequent in nature, and should result in modest
            levels of portfolio turnover for the Portfolios. See "Portfolio
            Turnover."
 
          
Equity      The equity portion of each Portfolio will be allocated among a
Portion of  number of Underlying Stock Funds which provide a broad range of
the         equity-based investment objectives and strategies. By allocating
Portfolios  assets among these Funds, the equity portions of the Portfolios
            can be diversified in multiple ways, including the following:
 
            By Region
                . U.S. Equities
                . International Developed Markets Equities
                . International Emerging Markets Equities
 
                                                                
                                                             Prospectus        9
<PAGE>
 
PIMCO Funds Asset Allocation Series
 
            By Investment Style
               . Blend (Broad Market)
               . Value
               . Growth
 
            By Size
               . Large-Cap
               . Mid-Cap
               . Small-Cap
               
               For a description of the Underlying Stock Funds and their in-
            vestment objectives and strategies, please see "Underlying Funds."
            The Sub-Advisers for the Underlying Stock Funds each have differ-
            ent investment philosophies and processes which are reflected in
            the Funds they manage. Through asset allocation, PIMCO Advisors
            can take advantage of the expertise of each Sub-Adviser and com-
            bine the investment styles set forth above in providing broadly
            diversified Portfolios. For a description of each Sub-Adviser and
            its particular investment philosophy and process, please see the
            Statement of Additional Information and the Underlying Fund Pro-
            spectuses, which are incorporated herein by reference and are
            available free of charge by telephoning the Distributor at 1-800-
            426-0107.     
 
 
Fixed       The fixed income portion of each Portfolio will be allocated among
Income      a number of Underlying Bond Funds which provide a broad range of
Portion of  fixed income-based investment objectives and strategies. By allo-
the         cating assets among these Funds, the fixed income portions of the
Portfolios  Portfolios can be diversified in multiple ways, including the fol-
            lowing:
 
            By Region
               . U.S. Fixed Income
               . Foreign Fixed Income
 
            By Sector/Investment Specialty
               . Governments
               . Mortgages
               . Corporate
               . Inflation-Indexed
 
            By Credit Quality
               . Investment Grade/Money Market
               . Medium Grade
               . High Yield
 
            By Duration
               . Long-Term
               . Intermediate-Term
               . Short-Term
               
               For a description of the Underlying Bond Funds and their in-
            vestment objectives and strategies, please see "Underlying Funds."
            Pacific Investment Management is the sole investment adviser for
            each Underlying Bond Fund. Through asset allocation, PIMCO Advi-
            sors can take advantage of the broad fixed income expertise of Pa-
            cific Investment Management and combine the investment styles set
            forth above in providing broadly diversified Portfolios. For a de-
            scription of Pacific Investment Management and its investment phi-
            losophy and process, please see the Statement of Additional Infor-
            mation and the Underlying Fund Prospectuses, which are incorpo-
            rated herein by reference and are available free of charge by tel-
            ephoning the Distributor at 1-800-426-0107.     
 
                                      10
<PAGE>
 
 
 
Potential   As described above, PIMCO Advisors has broad discretion to allo-
Conflicts   cate and reallocate the Portfolios' assets among the Underlying
of Interest Funds consistent with the Portfolios' investment objectives and
            policies and the asset allocation ranges specified above. Although
            PIMCO Advisors does not charge an investment advisory fee for its
            asset allocation services, PIMCO Advisors and its affiliates indi-
            rectly receive fees (including investment advisory and administra-
            tive fees) from the Underlying Funds in which the Portfolios in-
            vest. In this regard, PIMCO Advisors has a financial incentive to
            invest a Portfolio's assets in Underlying Funds with higher fees
            than other Funds, even if it believes that alternate investments
            would better serve the Portfolio's investment program. PIMCO Advi-
            sors is legally obligated to disregard that incentive in making
            asset allocation decisions for the Portfolios. The Trustees and
            officers of the Trust may also have conflicting interests in ful-
            filling their fiduciary duties to both the Portfolios and the Un-
            derlying Funds.
 
 
General     Because the Portfolios invest all of their assets in the Under-
Risks of    lying Funds, the risks associated with investing in the Portfolios
Investing   are closely related to the risks associated with the securities
in the      held by the Underlying Funds. The ability of a Portfolio to
Portfolios  achieve its investment objective will depend upon the ability of
            the Underlying Funds to achieve their objectives. Of course, the
            extent to which the investment performance and risks associated
            with a particular Portfolio correlate to those of a particular Un-
            derlying Fund will depend upon the extent to which the Portfolio's
            assets are allocated from time to time for investment in the Un-
            derlying Fund. For a description of the principal risks associated
            with investments in the Underlying Funds, please see "Underlying
            Funds--Principal Risks of the Underlying Funds" in this Prospec-
            tus, "Investment Objectives and Policies" in the Statement of Ad-
            ditional Information and "Characteristics and Risks of Securities
            and Investment Techniques" in the Underlying Fund Prospectuses,
            which are incorporated herein by reference and are available free
            of charge by telephoning the Distributor at 1-800-426-0107.
 
     
Portfolio   A change in the securities held by a Portfolio is known as "port-
Turnover    folio turnover." Because PIMCO Advisors does not expect to reallo-
            cate the Portfolios' assets among the Underlying Funds on a fre-
            quent basis, the portfolio turnover rates for the Portfolios are
            expected to be modest (i.e., less than 25%) in comparison to most
            mutual funds. However, the Portfolios' indirectly bear the ex-
            penses associated with portfolio turnover of the Underlying Funds,
            a number of which have fairly high portfolio turnover rates (i.e.,
            in excess of 100%). High portfolio turnover involves correspond-
            ingly greater expenses to an Underlying Fund, including brokerage
            commissions or dealer mark-ups and other transaction costs on the
            sale of securities and reinvestments in other securities. Share-
            holders in the Portfolios may also bear expenses directly or indi-
            rectly through sales of securities held by the Portfolios and the
            Underlying Funds which result in realization of ordinary income or
            taxable capital gains (including short-term capital gains which
            are generally taxed to shareholders at ordinary income tax rates).
            See "Taxes."     
 
 
Service     Many of the services provided to the Portfolios depend on the
Systems --  smooth functioning of computer systems. Many systems in use today
Year 2000   cannot distinguish between the year 1900 and the year 2000. Should
Problem     any of the service systems fail to process information properly,
            that could have an adverse impact on the Portfolios' operations
            and services provided to shareholders. The Adviser, Distributor,
            Shareholder Servicing and Transfer Agent, Custodian, and certain
            other service providers to the Portfolios have reported that each
            is working toward mitigating the risks associated with the so-
            called "year 2000 problem." However, there can be no assurance
            that the problem will be corrected in all respects and that the
            Portfolios' operations and services provided to shareholders will
            not be adversely affected, nor can there be any assurance that the
            year 2000 problem will not have an adverse effect on the entities
            whose securities are held by the Underlying Funds or on domestic
            or global equity markets or economies, generally.
 

"Funda-     The investment objective of each Portfolio described in this Pro-
mental"     spectus may be changed by the Board of Trustees without share-
Policies    holder approval. If there is a change in a Portfolio's investment
            objective, shareholders should consider whether the Portfolio re-
            mains an appropriate investment in light of their then current fi-
            nancial positions and needs.

                                                                
                                                             Prospectus     

 
                                       11
<PAGE>
 
            Underlying Funds

            Each Portfolio invests all of its assets in Underlying Funds. Ac-
            cordingly, each Portfolio's investment performance depends upon a
            favorable allocation among the Underlying Funds as well as the
            ability of the Underlying Funds to meet their objectives. There
            can be no assurance that the investment objective of any Under-
            lying Fund will be achieved. Shares of the Underlying Funds are
            not offered in this Prospectus.
   
Advisory    PIMCO Advisors serves as investment adviser for each of the Under-
Arrange-    lying Stock Funds, except that its affiliate, Pacific Investment
ments for   Management, is the sole investment adviser to PIMCO StocksPLUS
the Under-  Fund. PIMCO Advisors retains affiliated sub-advisory firms to man-
lying funds age the portfolios of a number of the Underlying Stock Funds.
            These sub-advisers include Blairlogie Capital Management
            ("Blairlogie"), Columbus Circle Investors, Cadence Capital Manage-
            ment, NFJ Investment Group and Parametric Portfolio Associates. On
            or about April 30, 1999, it is anticipated that PIMCO Advisors
            will sell substantially all of its ownership interest in
            Blairlogie, although PIMCO Advisors intends to continue to retain
            Blairlogie as sub-adviser to PIMCO International Fund, an Under-
            lying Stock Fund. The PIMCO Equity Advisors division ("PIMCO Eq-
            uity Advisors") of PIMCO Advisors manages the investments of sev-
            eral of the Underlying Stock Funds. Pacific Investment Management
            is the sole investment adviser to each Underlying Bond Fund. Under
            these arrangements, PIMCO Equity Advisors, the sub-advisers and
            Pacific Investment Management (referred to collectively as "Sub-
            Advisers") have full investment discretion and make all determina-
            tions with respect to the investment of the assets of these Funds.
            For a complete description of the advisory and sub-advisory ar-
            rangements for the Underlying Funds, please see the Statement of
            Additional Information and the Underlying Fund Prospectuses, which
            are incorporated herein by reference and are available free of
            charge by telephoning the Distributor at 1-800-426-0107.     
 
12   PIMCO Funds Asset Allocation Series
<PAGE>
 
 
 
   
Underlying  The following provides a concise description of the investment ob-
Stock Funds jective and primary investments of each Underlying Stock Fund. For
            a complete description of these Funds, please see the Underlying
            Fund Prospectuses, which are incorporated herein by reference and
            are available free of charge by telephoning the Distributor at 1-
            800-426-0107.     
 
 
 
<TABLE>   
<CAPTION>
                                  Fund Name                Investment Objective          Primary Investments
          =======================================================================================================================
          <S>                     <C>                      <C>                           <C>
          Growth Stock            PIMCO Growth             Long-term growth of           Common stocks of companies with
          Funds                                            capital; income is            market capitalizations of at least
                                                           incidental                    $5 billion
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Target             Capital appreciation; no      Common stocks of companies with
                                                           consideration given to        between $1 billion and $10 billion
                                                           income                        of market capitalizations
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Opportunity        Capital appreciation; no      Common stocks of companies with
                                                           consideration given to        market capitalizations of less than
                                                           income                        $2 billion
          =======================================================================================================================
          Blend Stock             PIMCO Capital            Growth of capital             Common stocks of companies with
          Funds                   Appreciation                                           market capitalizations of at least
                                                                                         $1 billion that have improving
                                                                                         fundamentals and whose stock is
                                                                                         reasonably valued by the market
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Mid-Cap            Growth of capital             Common stocks of companies with
                                  Growth                                                 market capitalizations in excess of
                                                                                         $500 million that have improving
                                                                                         fundamentals and whose stock is
                                                                                         reasonably valued by the market
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Small-Cap          Growth of capital             Common stocks of companies with
                                  Growth                                                 market capitalizations between $50
                                                                                         million and $1 billion that have
                                                                                         improving fundamentals and whose
                                                                                         stock is reasonably valued by the
                                                                                         market
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Micro-Cap          Long-term growth of           Common stocks of companies with
                                  Growth                   capital                       market capitalizations of less than
                                                                                         $100 million that have improving
                                                                                         fundamentals and whose stock is
                                                                                         reasonably valued by the market
          =======================================================================================================================
          Value Stock             PIMCO Equity             Current income as a           Common stocks with below-average
          Funds                   Income                   primary objective; long-      price to earnings ratios and higher
                                                           term growth of capital        dividend yields relative to their
                                                           as a secondary objective      industry groups
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Renaissance        Long-term growth of           Common stocks with below-average
                                                           capital and income            valuations that have improving
                                                                                         business fundamentals
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Value              Long-term growth of           Common stocks with below-average
                                                           capital and income            price to earnings ratios relative to
                                                                                         their industry groups
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Value 25           Long-term growth of           Approximately 25 common stocks of
                                                           capital and income            companies with medium market
                                                                                         capitalizations and below-average
                                                                                         price to earnings ratios relative to
                                                                                         their industry groups
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Small-Cap          Long-term growth of           Common stocks of companies with
                                  Value                    capital and income            market capitalizations between $50
                                                                                         million and $1 billion and below-
                                                                                         average price to earnings ratios
                                                                                          relative to their industry groups
          =======================================================================================================================
          Enhanced Index          PIMCO Tax-Efficient      Maximum after-tax growth      A broadly diversified portfolio of
          Stock Funds             Equity                   of capital                    at least 200 common stocks of
                                                                                         companies with larger
                                                                                         market capitalizations
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Enhanced Equity    Total return which            Commons stocks represented in the
                                                           equals or exceeds the         S&P 500
                                                           total return performance     
                                                           of an index representing     
                                                           the performance of a         
                                                           reasonably broad             
                                                           spectrum of common           
                                                           stocks (currently the        
                                                           S&P 500 (/1/))               
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO StocksPLUS         Total return which            S&P 500 stock index derivatives
                                                           exceeds the total             backed by a portfolio of fixed
                                                           return performance of         income securities
                                                           the S&P 500                  
          =======================================================================================================================
          International Stock     PIMCO International      Capital appreciation;         Non-U.S. stocks of companies with
          Funds                                            income is incidental          small, medium and large market
                                                                                         capitalizations (developed and
                                                                                         emerging markets)
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO International      Long-term capital             An international portfolio of equity
                                  Growth                   appreciation                  and equity-related securities
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Structured         Long-term growth of           Common stocks of companies located
                                  Emerging Markets         capital                       in emerging market countries
                     ------------------------------------------------------------------------------------------------------------ 
                                  PIMCO Tax-Efficient      Same as PIMCO Structured      Common stocks of companies located
                                  Structured               Emerging Markets Fund,        in emerging market countries
                                  Emerging Markets         except that the Fund         
                                                           seeks to achieve             
                                                           superior after-tax           
                                                           returns by employing a       
                                                           variety of tax-efficient     
                                                           management strategies        
          =======================================================================================================================
          Sector-Related          PIMCO Innovation         Capital appreciation; no      Common stocks of companies with
          Stock Funds                                      consideration                 small, medium and large market
                                                           given to income               capitalizations (technology-related
                                                                                         stocks)
</TABLE>                        
                                
            1. The Standard & Poor's 500 Composite Stock Price Index.     
                                
                                                                 
                                                              Prospectus     
                               
                                        13
                                
                               
<PAGE>
 
 
 
   
Underlying  Pacific Investment Management, an affiliate of PIMCO Advisors, has
Bond Funds  full investment discretion and makes all determinations with re-
            spect to the investment of the assets of each Underlying Bond
            Fund.     

               The investment objective of each Underlying Bond Fund (except
            as provided below) is to seek to realize maximum total return,
            consistent with preservation of capital and prudent investment
            management. The "total return" sought by most of the Underlying
            Bond Funds will consist of interest and dividends from underlying
            securities and capital appreciation or depreciation reflected in
            changes in the value of portfolio securities. The investment ob-
            jective of PIMCO Real Return Bond Fund is to seek to realize maxi-
            mum real return, consistent with preservation of real capital and
            prudent investment management. "Real return" is total return ad-
            justed for inflation. The investment objective of each of PIMCO
            Money Market Fund and PIMCO Short-Term Fund is to seek to obtain
            maximum current income consistent with preservation of capital and
            daily liquidity. PIMCO Money Market Fund also attempts to maintain
            a stable net asset value of $1.00 per share, although there can be
            no assurance that it will be successful in doing so.

               The following provides a concise description of the primary in-
            vestments of and other information relating to each Underlying
            Bond Fund. For a complete description of these Funds, please see
            the Underlying Fund Prospectus for PIMCO Funds: Pacific Investment
            Management Series, which is incorporated herein by reference and
            is available free of charge by telephoning the Distributor at 1-
            800-426-0107.
 
<TABLE>   
<CAPTION>
                Fund Name               Primary Investments                Duration         Credit Quality(/1/)       Foreign(/2/
===================================================================================================================================
 <C>            <C>                     <S>                                <C>              <C>                       <C>       
 Short          PIMCO Money Market      Money market instruments           Less than or     Min 95% Aaa or Prime 1;   0%        
 Duration Bond                                                             equal to 90 days less than or equal to     
 Funds                                                                     dollar-weighted  5% Aa or Prime 2          
                                                                           average maturity 
                -------------------------------------------------------------------------------------------------------------------
                PIMCO Short-Term        Money market instruments           0-1 yr           B to Aaa; max 10%         0-5%      
                                        and short maturity                                  below Baa                 
                                        fixed                                                                         
                                        income securities                                                             
                -------------------------------------------------------------------------------------------------------------------
                PIMCO Low Duration      Short and intermediate             1-3 yrs          B to Aaa; max 10%         0-20%
                                        maturity fixed income                               below Baa                 
                                        securities                                                                    
===================================================================================================================================
 Intermediate   PIMCO Moderate Duration Short and intermediate             2-5 yrs          B to Aaa; max 10%         0-20%
 Duration                               maturity fixed income                               below Baa                 
 Bond Funds                             securities                                                                    
                -------------------------------------------------------------------------------------------------------------------
                PIMCO Total Return      Intermediate maturity              3-6 yrs          B to Aaa; max 10%         
                                        fixed income securities                             below Baa                 0-20%     
                -------------------------------------------------------------------------------------------------------------------
                PIMCO Total Return II   Same as PIMCO Total Return         3-6 yrs          Baa to Aaa                0%        
                                        Fund, except that the                                                         
                                        Fund is subject to credit 
                                        quality and foreign issuer
                                        restrictions
===================================================================================================================================
 Long Duration  PIMCO Long-Term U.S.    Long-term maturity                 8 or more yrs.   A to Aaa                  0%
 Bond Funds     Government              fixed income securities                                  
===================================================================================================================================
 International  PIMCO Global Bond       Intermediate maturity              3-7 yrs          B to Aaa; max 10%          25-75%
 Bond Funds                             U.S. and foreign fixed                              below Baa
                                        income securities 
                -------------------------------------------------------------------------------------------------------------------
                PIMCO Foreign Bond      Intermediate maturity              3-7 yrs          B to Aaa; max 10%        Greater than 
                                        hedged foreign fixed                                below Baa                or equal to 
                                        income securities                                                            85%           
                -------------------------------------------------------------------------------------------------------------------
                PIMCO Emerging Markets  Emerging market fixed              0-8 yrs          B to Aaa                 Greater than or
                Bond                    income securities                                                            equal to 80%
===================================================================================================================================
 High Yield     PIMCO High Yield        Higher yielding fixed              2-6 yrs          B to Aaa; min 65%        0%
 Bond Funds                             income securities                                   below Baa
===================================================================================================================================
 Inflation      PIMCO Real Return Bond  Inflation-indexed fixed            N/A              B to Aaa; max 10%        0-35%
 Indexed Bond                           income securities                                   below Baa
 Funds

</TABLE>    
1. As rated by Moody's Investors Service, Inc., or if unrated, determined by
   Pacific Investment Management to be of comparable quality.

2. Percentage limitations relate to foreign currency-denominated securities for
   all Underlying Bond Funds except PIMCO Foreign Bond, Global Bond and Emerging
   Markets Bond Funds. Percentage limitations for these three Funds relate to
   securities of foreign issuers, denominated in any currency. Each Underlying
   Bond Fund (except PIMCO Long-Term U.S. Government Fund) may invest beyond
   these limits in U.S. dollar-denominated securities of foreign issuers. PIMCO
   Long-Term U.S. Government Fund may not invest in any securities of foreign
   issuers.

PIMCO Funds Asset Allocation Series
 
                                      14
<PAGE>
 
               Each Underlying Bond Fund will normally invest at least 65% of
            its assets in the following types of securities, which, unless
            provided above, may be issued by domestic or foreign entities and
            denominated in U.S. dollars or foreign currencies: securities is-
            sued or guaranteed by the U.S. Government, its agencies or instru-
            mentalities ("U.S. Government securities"); corporate debt securi-
            ties, including convertible securities and corporate commercial
            paper; mortgage-backed and other asset-backed securities; infla-
            tion-indexed bonds issued by both governments and corporations;
            structured notes, including hybrid or "indexed" securities, catas-
            trophe bonds and loan participations; delayed funding loans and
            revolving credit facilities; bank certificates of deposit, fixed
            time deposits and bankers' acceptances; repurchase agreements and
            reverse repurchase agreements; debt securities issued by states or
            local governments and their agencies, authorities and instrumen-
            talities; obligations of foreign governments or their subdivi-
            sions, agencies and instrumentalities; and obligations of interna-
            tional agencies or supranational entities. Fixed income securities
            may have fixed, variable, or floating rates of interest, including
            rates of interest that vary inversely at a multiple of a desig-
            nated or floating rate, or that vary according to changes in rela-
            tive values of currencies. Most of the Underlying Bond Funds may
            (but are not required to) make substantial use of derivative in-
            struments or use a series of purchase and sale contracts or other
            investment techniques to obtain market exposure to the securities
            in which they primarily invest.
 
   
Additional  In addition to the Funds listed above, a Portfolio may invest in
Underlying  additional Underlying Funds, including those that may become
Funds       available for investment in the future, at the discretion of PIMCO
            Advisors and without shareholder approval. Although each Portfolio
            currently invests in PIMCO Core Equity and Mid-Cap Equity Funds,
            it is expected that the Portfolios will no longer have investments
            in these Underlying Funds on and after May 1, 1999.     
 
 
Principal   There can be no assurance that the investment objectives of any of
Risks of    the Underlying Funds will be achieved. The following summarizes
the         principal risks associated with investments in the Underlying
Underlying  Funds. The summary is not intended to be exhaustive. For a more
Funds       complete description of these risks, please refer to "Investment
            Objectives and Policies" in the Statement of Additional Informa-
            tion and "Characteristics and Risks of Securities and Investment
            Techniques" in the Underlying Fund Prospectuses, which are incor-
            porated herein by reference and are available free of charge by
            telephoning the Distributor at 1-800-426-0107.
 
            Market Risk Most securities in which the Underlying Funds invest
            are subject to some degree of market risk, which is the risk of
            unfavorable market-induced changes in the value of a security. The
            following summarizes general market risks associated with invest-
            ments in fixed income and equity securities.
               Fixed Income Securities Changes in the market values of fixed
            income securities (i.e., capital appreciation or depreciation) are
            largely a function of changes in the current level of interest
            rates. The value of an Underlying Fund's investments in fixed in-
            come securities will typically change as the level of interest
            rates fluctuate. During periods of falling interest rates, the
            value of fixed income securities generally rise. Conversely, dur-
            ing periods of rising interest rates, the value of fixed income
            securities generally decline.
               "Duration" is one measure of the expected life of a fixed in-
            come security. When interest rates are falling, a portfolio with a
            shorter duration will generally not generate as high a level of
            total return as a portfolio with a longer duration. When interest
            rates are rising, a portfolio with a shorter duration will gener-
            ally outperform a longer duration portfolio. When interest rates
            are flat, shorter duration portfolios generally will not generate
            as high a level of total return as longer duration portfolios (as-
            suming that long-term interest rates are higher than short-term
            rates, which is commonly the case). Accordingly, longer duration
            portfolios generally have a greater potential for total return
            than shorter duration portfolios, but are also subject to greater
            levels of market risk and price volatility. Therefore, Underlying
            Bond Funds with longer average portfolio durations (e.g., PIMCO
            Long-Term U.S. Government Fund) are generally subject to higher
            levels of market risk than Funds with shorter durations (e.g.,
            PIMCO Money Market, Short-Term and Low Duration Funds). Also, some
            portfolios (e.g., those with mortgage-backed and other prepayable
            securities) have changing durations and may have increasing dura-
            tions precisely when that is least advantageous (i.e., when inter-
            est rates are rising).
 
                                                               
                                                            Prospectus        15
<PAGE>
 
               Certain types of securities in which the Underlying Bond Funds
            may invest are particularly sensitive to fluctuations in
            prevailing interest rates and have relatively high levels of
            market risk. These include various mortgage-related securities
            (for instance, the interest-only or "IO" class of a stripped
            mortgage-backed security) and "zero coupon" securities (fixed
            income securities, including certain U.S. Government securities,
            that do not make periodic interest payments and are purchased at a
            discount from their value at maturity). Please see "Investment
            Objectives and Policies" in the Statement of Additional
            Information for a description of these and other fixed income
            securities that are particularly sensitive to market risk.
               Equity Securities Changes in the market values of equity secu-
            rities (i.e., capital appreciation or depreciation) may depend
            upon a number of factors, including: general economic and market
            conditions, prospects of the security's issuer, changing interest
            rates, real or perceived economic and competitive industry condi-
            tions, and currency exchange rates. Generally, over the long term,
            the total return obtained by a portfolio that invests primarily in
            equity securities has historically been greater than that obtained
            by a portfolio that invests primarily in fixed income securities.
            However, an equity portfolio is generally subject to greater mar-
            ket risk and price volatility than a fixed income portfolio and is
            considered to be a more aggressive investment.
 
            Credit Risk of Fixed Income Securities Credit risk associated with
            investments in fixed income securities relates to the ability of
            the issuer to make scheduled payments of principal and interest on
            an obligation. The Underlying Funds that invest in fixed income
            securities are subject to varying degrees of risk that the issuers
            of the securities will have their credit ratings downgraded or
            will default, potentially reducing the Underlying Fund's share
            price and income level. Nearly all fixed income securities are
            subject to some credit risk, whether the issuers of the securities
            are corporations, states and local governments or foreign govern-
            ments. Even certain U.S. Government securities are subject to
            credit risk.
               Credit risk is particularly acute for Underlying Funds which
            invest in so-called "high-yield" securities or "junk" bonds, which
            are fixed income securities rated lower than Baa by Moody's In-
            vestors Service, Inc. ("Moody's") or BBB by Standard & Poor's Rat-
            ings Services ("S&P"), or are determined to be of comparable qual-
            ity to securities so rated. While such securities offer the poten-
            tial for higher investment returns than higher-rated securities,
            they carry a high degree of credit risk and are considered predom-
            inantly speculative with respect to the issuer's continuing abil-
            ity to meet principal and interest payments. High yield securities
            may also be more susceptible to real or perceived adverse economic
            and competitive industry conditions and may be less liquid than
            higher-rated securities. Accordingly, Underlying Funds which in-
            vest a significant portion of their assets in high yield securi-
            ties (e.g., PIMCO High Yield and Emerging Markets Bond Funds) are
            subject to substantial credit risk, while Funds that invest in
            higher quality securities (e.g., PIMCO Money Market and Long-Term
            U.S. Government Funds) are subject to less credit risk.
               
            Investments in Companies with Small Market Capitalizations Certain
            Underlying Stock Funds (in particular, PIMCO Opportunity, Small-
            Cap Growth, Micro-Cap Growth and Small-Cap Value Funds) invest in
            common stock of companies with market capitalizations that are
            small compared to other publicly traded companies. Investments in
            smaller, less seasoned companies may present greater opportunities
            for growth and capital appreciation, but also involve greater
            risks than customarily are associated with larger, more estab-
            lished companies. These companies may have limited product lines,
            markets or financial resources, or they may be dependent upon a
            limited management group. In addition, their securities may be
            traded in the over-the-counter market or on a regional exchange,
            or may otherwise have limited liquidity.     
 
            Foreign Securities and Currencies Many Underlying Funds (in par-
            ticular, PIMCO International, International Growth, Structured
            Emerging Markets, Tax-Efficient Structured Emerging Markets,
            Global Bond, Foreign Bond and Emerging Markets Bond Funds) invest
            in securities of foreign issuers, securities traded principally in
            securities markets outside the United States and/or securities de-
            nominated in foreign currencies (together, "foreign securities").
               Investing in foreign securities involves special risks not typ-
            ically associated with investing in U.S. securities. These risks
            include: differences in accounting, auditing and financial report-
            ing standards; generally higher commission
 
16   PIMCO Funds Asset Allocation Series
<PAGE>
 
                                                                
                                                             Prospectus     
            rates on foreign portfolio transactions; higher custodial costs;
            the possibility that foreign taxes will be charged on dividends
            and interest payable on foreign securities; the possibility of na-
            tionalization, expropriation or confiscatory taxation; adverse
            changes in investment or exchange control regulations (which may
            include suspension of the ability to transfer currency from a
            country); political instability; the possibility of unfavorable
            foreign economic factors; and greater price volatility.
               Certain Underlying Funds (in particular, PIMCO Structured
            Emerging Markets, Tax-Efficient Structured Emerging Markets and
            Emerging Markets Bond Funds) may invest in the securities of is-
            suers based in countries with developing or "emerging market"
            economies. These securities may present market, credit, currency,
            liquidity, legal, political and other risks greater than, or in
            addition to, risks of investing in developed foreign countries.
            These risks include: high currency exchange rate fluctuations;
            greater social, economic and political uncertainty and instability
            (including the risk of war); more substantial governmental in-
            volvement in the economy; less governmental supervision and regu-
            lation of the securities markets and participants in those mar-
            kets; unavailability of currency hedging techniques in certain
            emerging market countries; the fact that companies in emerging
            market countries may be newly organized and may be smaller and
            less seasoned companies; the difference in, or lack of, auditing
            and financial reporting standards, which may result in unavaila-
            bility of material information about issuers; different clearance
            and settlement procedures, which may be unable to keep pace with
            the volume of securities transactions or otherwise make it diffi-
            cult to engage in such transactions; the risk that it may be more
            difficult to obtain and/or enforce legal judgments in foreign ju-
            risdictions; and significantly smaller market capitalizations of
            emerging market issuers.
               
               Underlying Funds that invest in fixed income securities denomi-
            nated in foreign currencies or in foreign currencies and related
            derivative instruments (in particular, PIMCO Global Bond, Foreign
            Bond and Emerging Markets Bond Funds) and Underlying Funds that
            invest in equity securities traded principally in foreign curren-
            cies, may be adversely affected by changes in foreign currency ex-
            change rates. Those rates may fluctuate significantly over short
            periods of time for a number of reasons, including the forces of
            supply and demand in the foreign exchange markets, actual or per-
            ceived changes in interest rates, and intervention (or the failure
            to intervene) by U.S. or foreign governments or central banks, or
            by currency controls or political developments in the U.S. or
            abroad. For example, significant uncertainty surrounds the recent
            introduction of the euro (a common currency unit for the European
            Union) in January 1999 and its effect on the value of securities
            denominated in local European currencies. For a more complete dis-
            cussion of foreign currency risks (including those associated with
            the euro), please see "Investment Objectives and Policies--Foreign
            Currencies" in the Statement of Additional Information.     
 
            Derivative Instruments The Underlying Funds (with the exception of
            PIMCO Money Market Fund) may (but are not required to) utilize a
            number of derivative instruments for risk management purposes or
            as part of their investment strategies. These include futures con-
            tracts, options contracts, options on futures contracts, forward
            contracts and swap agreements. Generally, derivatives are finan-
            cial contracts whose value depends upon, or is derived from, the
            value of an underlying asset, reference rate or index, and may re-
            late to stocks, bonds, interest rates, currencies or currency ex-
            change rates, commodities, and related indexes. For a description
            of the various derivative instruments that may be utilized by the
            Underlying Funds, please see "Investment Objectives and Policies"
            in the Statement of Additional Information.
               The use of derivatives instruments involves risks different
            from, or greater than, the risks associated with investing di-
            rectly in securities and other more traditional investments. The
            following provides a general discussion of important risk factors
            relating to the use of derivative instruments by the Underlying
            Funds.
               Management Risk Derivative products are highly specialized in-
            struments that require investment techniques and risk analyses
            different from those associated with stocks and bonds. The use of
            a derivative requires an understanding not only of the underlying
            instrument but also of the derivative itself, without the benefit
            of observing the performance of the derivative under all possible
            market conditions.
               Credit Risk The use of a derivative involves the risk that a
            loss may be sustained as a result of the failure of another party
            to the contract (usually referred to as a "counterparty") to make
            required payments or otherwise comply with the contract's terms.
 
                                       17
<PAGE>
 

               Liquidity Risk Liquidity risk exists when a particular deriva-
            tive instrument is difficult to purchase or sell. If a derivative
            transaction is particularly large or if the relevant market is il-
            liquid (as is the case with many privately negotiated deriva-
            tives), it may not be possible to initiate a transaction or liqui-
            date a position at an advantageous time or price.
               Leverage Risk Because many derivatives have a leverage compo-
            nent, adverse changes in the value or level of the underlying as-
            set, reference rate or index can result in a loss substantially
            greater than the amount invested in the derivative itself. Certain
            derivatives have the potential for unlimited loss, regardless of
            the size of the initial investment. When an Underlying Fund uses
            derivatives for leverage, investments in that Fund will tend to be
            more volatile, resulting in larger gains or losses in response to
            market changes.
               Market and Other Risks Like most other investments, derivative
            instruments are subject to the general risk that the market value
            of the instrument will change in a way detrimental to the invest-
            or's interest. Other risks in using derivatives include the risk
            of mispricing or improper valuation of derivatives and the inabil-
            ity of derivatives to correlate perfectly with underlying assets,
            rates and indexes. Many derivatives, in particular privately nego-
            tiated derivatives, are complex and often valued subjectively. Im-
            proper valuations can result in increased cash payment require-
            ments to counterparties or a loss of value to an Underlying Fund.
            Also, the value of derivatives may not correlate perfectly, or at
            all, with the value of the assets, reference rates or indices they
            are designed to closely track. Consequently, an Underlying Fund's
            use of derivatives may not always be an effective means of, and
            sometimes could be counterproductive to, furthering the Fund's in-
            vestment objective or risk management strategy. In addition, suit-
            able derivative transactions may not be available in all circum-
            stances and there can be no assurance that an Underlying Fund will
            engage in such transactions at any given time or from time to
            time.
 
            A Note on PIMCO StocksPLUS Fund While the objective of PIMCO
            StocksPLUS Fund is to achieve a total return which exceeds the to-
            tal return performance of the S&P 500, it does so by investing
            substantially all of its assets in a combination of equity-based
            derivative instruments and a portfolio of fixed income securities.
            Consequently, the risks of investing in the Fund include the risks
            of derivatives and the risks generally associated with the Under-
            lying Bond Funds. To the extent that the Fund invests in S&P 500
            derivatives backed by a portfolio of fixed income securities, un-
            der certain conditions, generally in a market where the value of
            both S&P 500 derivatives and fixed income securities are declin-
            ing, the Fund may experience greater losses than would be the case
            if it were to invest directly in a portfolio of S&P 500 stocks.
 
            Certain Other Miscellaneous Investment Practices In addition to
            investing in the securities listed above under "Primary Invest-
            ments," some or all of the Underlying Funds may to varying
            extents: lend portfolio securities; enter into repurchase agree-
            ments and reverse repurchase agreements; purchase and sell securi-
            ties on a when-issued or delayed delivery basis; enter into for-
            ward commitments to purchase securities; purchase and write call
            and put options on securities and securities indexes; enter into
            futures contracts, options on futures contracts and swap agree-
            ments; invest in foreign securities; and buy or sell foreign cur-
            rencies and enter into forward foreign currency contracts. These
            and the other types of securities and investment techniques used
            by the Underlying Funds all have attendant risks. The Portfolios
            are indirectly subject to some or all of these risks to varying
            degrees because they invest all of their assets in the Underlying
            Funds. For further information concerning the investment practices
            of and risks associated with the Underlying Funds, please see "In-
            vestment Objectives and Policies" in the Statement of Additional
            Information and the Underlying Fund Prospectuses, which are incor-
            porated herein by reference and are available free of charge by
            telephoning the Distributor at 1-800-426-0107.
 
            Performance Information
 
            From time to time the Trust may make available certain information
            about the performance of the Class A, Class B and Class C shares
            of some or all of the Portfolios. Information about a Portfolio's
            performance is based on that Portfolio's record to a recent date
            and is not intended to indicate future performance. Performance
            information is
 
PIMCO Funds Asset Allocation Series
                                      18
<PAGE>

            computed separately for each Portfolio's Class A, Class B and
            Class C shares in accordance with the formulas described below.
            Because Class B and Class C shares bear the expense of the distri-
            bution fee attending the deferred sales charge (Class B) and asset
            based sales charge (Class C) alternatives and certain other ex-
            penses, it is expected that, under normal circumstances, the level
            of performance of a Portfolio's Class B and Class C shares will be
            lower than that of the Portfolio's Class A shares, although an in-
            vestment in Class B or Class C shares is not reduced by the front-
            end sales charge generally applicable to an investment in Class A
            shares.
               The total return of Class A, Class B and/or Class C shares of
            all Portfolios may be included in advertisements or other written
            material. When a Portfolio's total return is advertised with re-
            spect to its Class A, Class B and/or Class C shares, it will be
            calculated for the past year, the past five years, and the past
            ten years (or if the Portfolio has been offered for a period
            shorter than one, five or ten years, that period will be substi-
            tuted) since the establishment of the Portfolio, as more fully de-
            scribed in the Statement of Additional Information. Total return
            for each class is measured by comparing the value of an investment
            in the Portfolio at the beginning of the relevant period (in the
            case of Class A shares, giving effect to the maximum initial sales
            charge) to the redemption value of the investment in the Portfolio
            at the end of the period (assuming immediate reinvestment of any
            dividends or capital gains distributions at net asset value and
            giving effect to the deduction of the maximum CDSC which would be
            payable). Total return may be advertised using alternative methods
            that reflect all elements of return.
               Quotations of yield for a Portfolio or class will be based on
            the investment income per share (as defined by the Securities and
            Exchange Commission) during a particular 30-day (or one-month) pe-
            riod (including dividends and interest), less expenses accrued
            during the period ("net investment income"), and will be computed
            by dividing net investment income by the maximum public offering
            price per share on the last day of the period.
               The Portfolios may also provide current distribution informa-
            tion to their shareholders in shareholder reports or other share-
            holder communications, or in certain types of sales literature
            provided to prospective investors. Current distribution informa-
            tion for a particular class of a Portfolio will be based on dis-
            tributions for a specified period (i.e., total dividends from net
            investment income), divided by the relevant class net asset value
            per share on the last day of the period and annualized. Current
            distribution rates differ from standardized yield rates in that
            they represent what a class of a Portfolio has declared and paid
            to shareholders as of the end of a specified period rather than
            the Portfolio's actual net investment income for that period.
               The Adviser may also report to shareholders or to the public in
            advertisements concerning its performance as adviser to clients
            other than the Portfolios, and on its comparative performance or
            standing in relation to other money managers. Such comparative in-
            formation may be compiled or provided by independent ratings serv-
            ices or by news organizations. Any performance information,
            whether related to the Portfolios, the Adviser or an advisory af-
            filiate of the Adviser, should be considered in light of the Port-
            folios' investment objectives and policies, characteristics and
            quality of the Portfolios' investments, and the market conditions
            during the time period indicated, and should not be considered to
            be representative of what may be achieved by the Portfolios in the
            future.
               Investment results of the Portfolios will fluctuate over time,
            and any representation of the Portfolios' total return or yield
            for any prior period should not be considered as a representation
            of what an investor's total return or yield may be in any future
            period.
 
            How to Buy Shares
 
            Class A, Class B and Class C shares of each Portfolio are continu-
            ously offered through the Trust's principal underwriter, PIMCO
            Funds Distributors LLC (the "Distributor"), and through other
            firms which have dealer agreements with the Distributor ("partici-
            pating brokers") or which have agreed to act as introducing bro-
            kers for the Distributor ("introducing brokers").
               There are two ways to purchase Class A, Class B or Class C
            shares: either 1) through your dealer or broker which has a dealer
            agreement with the Distributor; or 2) directly by mailing a PIMCO
            Funds account application (an
 
                                                            
                                                         Prospectus     
                                      19
<PAGE>
 

            "account application") with payment, as described below under the
            heading Direct Investment, to the Distributor (if no dealer is
            named in the account application, the Distributor may act as deal-
            er).
               Each Portfolio currently offers and sells three classes of
            shares in this Prospectus (Class A, Class B and Class C). Shares
            may be purchased at a price equal to their net asset value per
            share next determined after receipt of an order, plus a sales
            charge which, at the election of the purchaser, may be imposed ei-
            ther (i) at the time of the purchase in the case of Class A shares
            (the "initial sales charge alternative"), (ii) on a contingent de-
            ferred basis in the case of Class B shares (the "deferred sales
            charge alternative"), or (iii) by the deduction of an ongoing as-
            set based sales charge in the case of Class C shares (the "asset
            based sales charge alternative"). In certain circumstances, Class
            A and Class C shares are also subject to a CDSC. See "Alternative
            Purchase Arrangements." Purchase payments for Class B and Class C
            shares are fully invested at the net asset value next determined
            after acceptance of the trade. Purchase payments for Class A
            shares, less the applicable sales charge, are invested at the net
            asset value next determined after acceptance of the trade.
               All purchase orders received by the Distributor prior to the
            close of regular trading (normally 4:00 p.m., Eastern time) on the
            New York Stock Exchange (the "Exchange"), on a regular business
            day, are processed at that day's offering price. However, orders
            received by the Distributor from dealers or brokers after the of-
            fering price is determined that day will receive such offering
            price if the orders were received by the dealer or broker from its
            customer prior to such determination and were transmitted to and
            received by the Distributor prior to its close of business that
            day (normally 5:00 p.m., Eastern time) or, in the case of certain
            retirement plans, received by the Distributor prior to 9:30 a.m.,
            Eastern time on the next business day. Purchase orders received on
            other than a regular business day will be executed on the next
            succeeding regular business day. The Distributor, in its sole dis-
            cretion, may accept or reject any order for purchase of Portfolio
            shares. The sale of shares will be suspended during any period in
            which the Exchange is closed for other than weekends or holidays,
            or if permitted by the rules of the Securities and Exchange Com-
            mission, when trading on the Exchange is restricted or during an
            emergency which makes it impracticable for the Portfolios to dis-
            pose of their securities or to determine fairly the value of their
            net assets, or during any other period as permitted by the Securi-
            ties and Exchange Commission for the protection of investors.
               Except for purchases through the PIMCO Funds Auto-Invest plan,
            the PIMCO Funds Auto-Exchange plan, investments pursuant to the
            Uniform Gifts to Minors Act, and tax-qualified and wrap programs
            referred to below under "Tax-Qualified Retirement Plans" and
            "Sales at Net Asset Value," the minimum initial investment in
            Class A, Class B or Class C shares of any Portfolio or other se-
            ries of the Trust or any series of PIMCO Funds: Pacific Investment
            Management Series is $2,500, and the minimum additional investment
            is $100 per Portfolio. For information about dealer commissions,
            see "Alternative Purchase Arrangements" below. Persons selling
            Portfolio shares may receive different compensation for selling
            Class A, Class B or Class C shares. Normally, Portfolio shares
            purchased through participating brokers are held in the investor's
            account with that broker. No share certificates will be issued un-
            less specifically requested in writing by an investor or broker-
            dealer.
 
 
Direct      Investors who wish to invest in Class A, Class B or Class C shares
Investment  of the Portfolios directly, rather than through a participating
            broker, may do so by opening an account with the Distributor. To
            open an account, an investor should complete the account applica-
            tion. All shareholders who open direct accounts with the Distribu-
            tor will receive from the Distributor individual confirmations of
            each purchase, redemption, dividend reinvestment, exchange or
            transfer of Trust shares, including the total number of Trust
            shares owned as of the confirmation date, except that purchases
            which result from the reinvestment of daily-accrued dividends
            and/or distributions will be confirmed once each calendar quarter.
            See "Distributions" below. Information regarding direct investment
            or any other features or plans offered by the Trust may be ob-
            tained by calling the Distributor at 1-800-426-0107 or by calling
            your broker.

PIMCO Funds Asset Allocation Series 
                                      20
<PAGE>
 
 
Purchase by Investors who wish to invest directly may send a check payable to
Mail        PIMCO Funds Distributors LLC, along with a completed application
            form to:
 
                PIMCO Funds Distributors LLC
                   
                P.O. Box 9688     
                Providence, RI 02940-0926
 
               Purchases are accepted subject to collection of checks at full
            value and conversion into federal funds. Payment by a check drawn
            on any member of the Federal Reserve System can normally be con-
            verted into federal funds within two business days after receipt
            of the check. Checks drawn on a non-member bank may take up to 15
            days to convert into federal funds. In all cases, the purchase
            price is based on the net asset value next determined after the
            purchase order and check are accepted, even though the check may
            not yet have been converted into federal funds.
 
 
Subsequent  Subsequent purchases of Class A, Class B or Class C shares can be
Purchases   made as indicated above by mailing a check with a letter describ-
of          ing the investment or with the additional investment portion of a
Shares      confirmation statement. Except for subsequent purchases through
            the PIMCO Funds Auto-Invest plan, the PIMCO Funds Auto-Exchange
            plan, tax-qualified programs and PIMCO Funds Fund Link referred to
            below, and except during periods when an Automatic Withdrawal Plan
            is in effect, the minimum subsequent purchase is $100 in any Port-
            folio. All payments should be made payable to PIMCO Funds Distrib-
            utors LLC and should clearly indicate the shareholder's account
            number. Checks should be mailed to the address above under "Pur-
            chase by Mail."

               
Tax-        The Distributor makes available retirement plan services and docu-
Qualified   ments for Individual Retirement Accounts (IRAs), including Roth
Retirement  IRAs, for which Boston Safe Deposit & Trust Company serves as
Plans       trustee and for IRA Accounts established with Form 5305-SIMPLE un-
            der the Internal Revenue Code of 1986, as amended (the "Code").
            These accounts include Simplified Employee Pension Plan (SEP) and
            Salary Reduction Simplified Employee Pension Plan (SAR/SEP) IRA
            accounts and prototype documents. In addition, prototype documents
            are available for establishing 403(b)(7) custodial accounts with
            Boston Safe Deposit & Trust Company as custodian. This type of
            plan is available to employees of certain non-profit organiza-
            tions.     
               The Distributor also makes available prototype documents for
            establishing Money Purchase and/or Profit Sharing plans and 401(k)
            Retirement Savings Plans. These prototype plans require certain
            minimum per participant account sizes and certain minimum aggre-
            gate investments in the Trust, but are not subject to the small
            account fees described below that will apply to other plans. In-
            vestors should call the Distributor at 1-800-426-0107 for further
            information about these plans and should consult with their own
            tax advisers before establishing any retirement plan. Investors
            who maintain their accounts with participating brokers should con-
            sult their broker about similar types of accounts that may be of-
            fered through the broker. The minimum initial investment for all
            tax-qualified plans (except for employer-sponsored plans, SIMPLE
            IRAs, SEPs and SAR/SEPs) is $1,000 per Portfolio and the minimum
            subsequent investment is $100. The minimum initial investment for
            employer-sponsored plans, SIMPLE IRAs, SEPs and SAR/SEPs and the
            minimum subsequent investment per Portfolio for all such plans is
            $50.

           
PIMCO Funds The PIMCO Funds Auto-Invest plan provides for periodic investments
Auto-Invest into the shareholder's account with the Trust by means of auto-
            matic transfers of a designated amount from the shareholder's bank
            account. The minimum investment for eligibility in the PIMCO Funds
            Auto-Invest plan is $1,000 per Portfolio. Investments may be made
            monthly or quarterly, and may be in any amount subject to a mini-
            mum of $50 per month for each Portfolio in which shares are pur-
            chased through the plan. Further information regarding the PIMCO
            Funds Auto-Invest plan is available from the Distributor or par-
            ticipating brokers. You may enroll by completing the appropriate
            section on the account application, or you may obtain an Auto-In-
            vest application by calling the Distributor or your broker.

                                                                
                                                             Prospectus      
                                       21
<PAGE>
 
            
PIMCO Funds The PIMCO Funds Auto-Exchange plan establishes regular, periodic
Auto-       exchanges from one Portfolio to another Portfolio or other series
Exchange    of the Trust or PIMCO Funds: Pacific Investment Management Series
            which offers Class A, Class B or Class C shares. The plan provides
            for regular investments into a shareholder's account in a specific
            Portfolio by means of automatic exchanges of a designated amount
            from an account for another Portfolio or other series of the same
            class of shares and with identical account registration.
               Exchanges may be made monthly or quarterly, and may be in any
            amount subject to a minimum of $1,000 to open a new Portfolio ac-
            count and of $50 for any existing Portfolio account for which
            shares are purchased through the plan. Further information regard-
            ing the PIMCO Funds Auto-Exchange plan is available from the Dis-
            tributor at 1-800-426-0107 or participating brokers. You may en-
            roll by completing an application which may be obtained from the
            Distributor or by telephone request at 1-800-426-0107. For more
            information on exchanges, see "Exchange Privilege."
 
 
PIMCO Funds PIMCO Funds Fund Link ("Fund Link") connects your Portfolio ac-
Fund Link   count with a bank account. Fund Link may be used for subsequent
            purchases and for redemptions and other transactions described un-
            der "How to Redeem." Purchase transactions are effected by elec-
            tronic funds transfers from the shareholder's account at a U.S.
            bank or other financial institution that is an Automated Clearing
            House ("ACH") member. Investors may use Fund Link to make subse-
            quent purchases of shares in amounts from $50 to $10,000. To ini-
            tiate such purchases, call 1-800-426-0107. All such calls will be
            recorded. Fund Link is normally established within 45 days of re-
            ceipt of a Fund Link application by First Data Investor Services
            Group, Inc. (the "Transfer Agent"). The minimum investment by Fund
            Link is $50 per Portfolio. Shares will be purchased on the regular
            business day the Distributor receives the funds through the ACH
            system, provided the funds are received before the close of regu-
            lar trading on the Exchange. If the funds are received after the
            close of regular trading, the shares will be purchased on the next
            regular business day.
               Fund Link privileges must be requested on the account applica-
            tion. To establish Fund Link on an existing account, complete a
            Fund Link application, which is available from the Distributor or
            your broker, with signatures guaranteed from all shareholders of
            record for the account. See "Signature Guarantee" below. Such
            privileges apply to each shareholder of record for the account un-
            less and until the Distributor receives written instructions from
            a shareholder of record canceling such privileges. Changes of bank
            account information must be made by completing a new Fund Link ap-
            plication signed by all owners of record of the account, with all
            signatures guaranteed. The Distributor, the Transfer Agent and the
            Trust may rely on any telephone instructions believed to be genu-
            ine and will not be responsible to shareholders for any damage,
            loss or expenses arising out of such instructions. The Trust re-
            serves the right to amend, suspend or discontinue Fund Link privi-
            leges at any time without prior notice. Fund Link does not apply
            to shares held in broker "street name" accounts.
 
 
Signature   When a signature guarantee is called for, the shareholder should
Guarantee   have "Signature Guaranteed" stamped under his signature and guar-
            anteed by any of the following entities: U.S. banks, foreign banks
            having a U.S. correspondent bank, credit unions, savings associa-
            tions, U.S. registered dealers and brokers, municipal securities
            dealers and brokers, government securities dealers and brokers,
            national securities exchanges, registered securities associations
            and clearing agencies (each an "Eligible Guarantor Institution").
            The Distributor reserves the right to reject any signature guaran-
            tee pursuant to its written signature guarantee standards or pro-
            cedures, which may be revised in the future to permit it to reject
            signature guarantees from Eligible Guarantor Institutions that do
            not, based on credit guidelines, satisfy such written standards or
            procedures. The Trust may change the signature guarantee require-
            ments from time to time upon notice to shareholders, which may be
            given by means of a new or supplemented Prospectus.
 
         
Account     Changes in registration or account privileges may be made in writ-
Registra-   ing to the Transfer Agent. Signature guarantees may be required.
tion        See "Signature Guarantee" above. All correspondence must include
Changes     the account number and must be sent to:
 
               PIMCO Funds Distributors LLC
                  
               P.O. Box 9688     
               Providence, RI 02940-0926
 
PIMCO Funds Asset Allocation Series 
                                      22
<PAGE>
 
 
Small       Because of the disproportionately high costs of servicing accounts
Account     with low balances, a fee at an annual rate of $16, paid to PIMCO
Fee         Advisors, the Portfolios' administrator, will automatically be de-
            ducted from direct accounts with balances falling below a minimum
            level. The valuation of accounts and the deduction are expected to
            take place during the last five business days of each calendar
            quarter. The fee will be deducted in quarterly installments from
            accounts with balances below $2,500 except for Uniform Gift to Mi-
            nors, IRA, Roth IRA and Auto-Invest accounts, for which the limit
            is $1,000. Effective April 1, 1999, except for prototype plans de-
            scribed above, the fee will apply to employer-sponsored retirement
            plan accounts, Money Purchase and/or Profit Sharing plans, 401(k)
            plans, 403(b)(7) custodial accounts, SIMPLE IRAs, SEPs and
            SAR/SEPs. (A separate custodial fee may apply to IRAs, Roth IRAs
            and other retirement accounts.) No fee will be charged on any ac-
            count of a shareholder if the aggregate value of all of the share-
            holder's accounts is at least $50,000. No small account fee will
            be charged to employee and employee-related accounts of PIMCO Ad-
            visors and/or its affiliates.
 
 
Minimum     Due to the relatively high cost to the Portfolios of maintaining
Account     small accounts, you are asked to maintain an account balance of at
Size        least the amount necessary to open the type of account involved.
            If your balance is below such minimum for three months or longer,
            the Portfolios' administrator shall have the right (except in the
            case of employer-sponsored retirement accounts) to close your ac-
            count after giving you 60 days in which to increase your balance.
            Your account will not be liquidated if the reduction in size is
            due solely to market decline in the value of your Portfolio shares
            or if the aggregate value of all your accounts in PIMCO Funds ex-
            ceeds $50,000.
 
            Alternative Purchase Arrangements
 
            The Trust offers investors three classes of shares in this Pro-
            spectus (Class A, Class B and Class C) which bear sales charges in
            different forms and amounts and which bear different levels of ex-
            penses. The alternative purchase arrangements offered in this Pro-
            spectus are designed to enable a retail investor to choose the
            method of purchasing Portfolio shares that is most beneficial to
            the investor based on all factors to be considered, which include:
            the amount and intended length of the investment; the particular
            Portfolio; and whether the investor intends to exchange shares for
            shares of other PIMCO Funds. Generally, when making an investment
            decision, investors should consider the anticipated life of an in-
            tended investment in the Portfolios, the accumulated distribution
            and servicing fees plus CDSCs on Class B or Class C shares, the
            initial sales charge plus accumulated servicing fees on Class A
            shares (plus a CDSC in certain circumstances), the possibility
            that the anticipated higher return on Class A shares due to the
            lower ongoing charges will offset the initial sales charge paid on
            such shares, the automatic conversion of Class B shares to Class A
            shares and the difference in the CDSCs applicable to Class A,
            Class B and Class C shares.
 
            Class A The initial sales charge alternative (Class A) might be
            preferred by investors purchasing shares of sufficient aggregate
            value to qualify for reductions in the initial sales charge appli-
            cable to such shares. Similar reductions are not available on the
            contingent deferred sales charge alternative (Class B) or the as-
            set based sales charge alternative (Class C). Class A shares are
            subject to a servicing fee but are not subject to a distribution
            fee and, accordingly, such shares are expected to pay correspond-
            ingly higher dividends on a per share basis. However, because ini-
            tial sales charges are deducted at the time of purchase, not all
            of the purchase payment for Class A shares is invested initially.
            Class B and Class C shares might be preferable to investors who
            wish to have all purchase payments invested initially, although
            remaining subject to higher distribution and servicing fees and,
            for certain periods, being subject to a CDSC. An investor who
            qualifies for an elimination of the Class A initial sales charge
            should also consider whether he or she anticipates redeeming
            shares in a time period which will subject such shares to a CDSC
            as described below. See "Initial Sales Charge Alternative--Class A
            Shares--Class A Deferred Sales Charge" below.
 
            Class B Class B shares might be preferred by investors who intend
            to invest in the Portfolios for longer periods and who do not in-
            tend to purchase shares of sufficient aggregate value to qualify
            for sales charge reductions applicable to
                                                                
                                                             Prospectus     
 
                                       23
<PAGE>


            Class A shares. Both Class B and Class C shares can be purchased
            at net asset value without an initial sales charge. However, un-
            like Class C shares, Class B shares convert into Class A shares
            after the shares have been held for seven years. After the conver-
            sion takes place, the shares will no longer be subject to a CDSC,
            and will be subject to the servicing fees charged for Class A
            shares which are lower than the distribution and servicing fees
            charged on either Class B or Class C shares. See "Deferred Sales
            Charge Alternative--Class B Shares" below. Class B shares are not
            available for purchase by employer sponsored retirement plans.
 
            Class C Class C shares might be preferred by investors who intend
            to purchase shares which are not of sufficient aggregate value to
            qualify for Class A sales charges of 1% or less and who wish to
            have all purchase payments invested initially. Class C shares are
            preferable to Class B shares for investors who intend to maintain
            their investment for intermediate periods and therefore may also
            be preferable for investors who are unsure of the intended length
            of their investment. Unlike Class B shares, Class C shares are not
            subject to a CDSC after they have been held for one year and are
            subject to only a 1% CDSC during the first year. However, because
            Class C shares do not convert into Class A shares, Class B shares
            are preferable to Class C shares for investors who intend to main-
            tain their investment in the Portfolios for long periods. See "As-
            set Based Sales Charge Alternative--Class C Shares" below.
               In determining which class of shares to purchase, an investor
            should always consider whether any waiver or reduction of a sales
            charge or a CDSC is available. See generally "Initial Sales Charge
            Alternative--Class A Shares" and "Waiver of Contingent Deferred
            Sales Charges" below.
               The maximum single purchase of Class B shares of the Portfolios
            and other series of the Trust and PIMCO Funds: Pacific Investment
            Management Series accepted is $249,999. The maximum single pur-
            chase of Class C shares of the Portfolios and other series of the
            Trust and PIMCO Funds: Pacific Investment Management Series ac-
            cepted is $999,999. The Portfolios may refuse any order to pur-
            chase shares.
               For a description of the Distribution and Servicing Plans and
            distribution and servicing fees payable thereunder with respect to
            Class A, Class B and Class C shares, see "Distributor and Distri-
            bution and Servicing Plans" below.
               
            Waiver of Contingent Deferred Sales Charges The CDSC applicable to
            Class A and Class C shares is currently waived for (i) any partial
            or complete redemption in connection with (a) required minimum
            distributions to IRA account owners or beneficiaries who are age
            70 1/2 or older or (b) distributions to participants in employer-
            sponsored retirement plans upon attaining age 59 1/2 or on account
            of death or disability; (ii) any partial or complete redemption in
            connection with a qualifying loan or hardship withdrawal from an
            employer sponsored retirement plan; (iii) any     
            complete redemption in connection with a distribution from a qual-
            ified employer retirement plan in connection with termination of
            employment or termination of the employer's plan and the transfer
            to another employer's plan or to an IRA (with the exception of a
            Roth IRA); (iv) any partial or complete redemption following death
            or disability (as defined in the Code) of a shareholder (including
            one who owns the shares as joint tenant with his or her spouse)
            from an account in which the deceased or disabled is named, pro-
            vided the redemption is requested within one year of the death or
            initial determination of disability; (v) any redemption resulting
            from a return of an excess contribution to a qualified employer
            retirement plan or an IRA (with the exception of a Roth IRA); (vi)
            up to 10% per year of the value of an account which (a) has the
            value of at least $10,000 at the start of such year and (b) is
            subject to an Automatic Withdrawal Plan; (vii) redemptions by
            Trustees, officers and employees of the Trust, and by directors,
            officers and employees of the Distributor and the Adviser; (viii)
            redemptions effected pursuant to a Portfolio's right to involun-
            tarily redeem a shareholder's account if the aggregate net asset
            value of shares held in such shareholder's account is less than a
            minimum account size specified in such Portfolio's prospectus;
            (ix) involuntary redemptions caused by operation of law; (x) re-
            demption of shares of any Portfolio that is combined with another
            Portfolio or other series of the Trust or another investment com-
            pany, or a personal holding company by virtue of a merger, acqui-
            sition or other similar reorganization transaction; (xi) redemp-
            tions by a shareholder who is a participant making periodic
                   
                   
            purchases of not less than $50 through certain employer sponsored
            savings plans that are clients of a broker-dealer with which the
            Distributor has an agreement with respect to such purchases; (xii)
            redemptions effected by trustees or

PIMCO Funds Asset Allocation Series
 
                                      24
<PAGE>
 

            other fiduciaries who have purchased shares for employer sponsored
            plans, the trustee, administrator, fiduciary, broker, trust com-
            pany or registered investment adviser for which has an agreement
            with the Distributor with respect to such purchases; or (xiii) re-
            demptions in connection with IRA accounts established with Form
            5305-SIMPLE under the Code for which the Trust is the designated
            financial institution.
               The CDSC applicable to Class B shares is currently waived for
            any partial or complete redemption in each of the following cases:
            (a) in connection with required minimum distributions to IRA ac-
            count owners or to plan participants or beneficiaries who are age
            70 1/2 or older; (b) following death or disability (as defined in
            the Code) of a shareholder (including one who owns the shares as
            joint tenant with his or her spouse) from an account in which the
            deceased or disabled is named, provided the redemption is re-
            quested within one year of the death or initial determination of
            disability; and (c) up to 10% per year of the value of an account
            which (i) has a value of at least $100,000 at the start of such
            year and (ii) is subject to an Automatic Withdrawal Plan. See "How
            to Redeem--Automatic Withdrawal Plan."
               The Distributor may require documentation prior to waiver of
            the CDSC for any class, including distribution letters, certifica-
            tion by plan administrators, applicable tax forms, death certifi-
            cates, physicians' certificates, etc.
                                                                
                                                             Prospectus     
                                       25
<PAGE>
 
 
 
Initial
Sales
Charge
Alternative
- --
Class A 
Shares     Class A shares are sold at a public offering price equal to their
           net asset value per share plus a sales charge, as set forth below.
           As indicated below under "Class A Deferred Sales Charge," certain
           investors that purchase $1,000,000 or more of any Portfolio's
           Class A shares (and thus pay no initial sales charge) may be sub-
           ject to a 1% CDSC if they redeem such shares during the first 18
           months after their purchase.
 
 
                 90/10 Portfolio and 60/40 Portfolio
<TABLE>
<CAPTION>
                                                                  Discount or
                                   Sales Charge as Sales Charge   Commission to
              Amount of            % of Net        as % of Public Dealers as % of
              Purchase             Amount Invested Offering Price Public Offering Price
              -------------------------------------------------------------------------
              <S>                  <C>             <C>            <C>
              $0 - $49,999         5.82%           5.50%          4.75%
              -------------------------------------------------------------------------
              $50,000 - $99,999    4.71%           4.50%          4.00%
              -------------------------------------------------------------------------
              $100,000 - $249,999  3.63%           3.50%          3.00%
              -------------------------------------------------------------------------
              $250,000 - $499,999  2.56%           2.50%          2.00%
              -------------------------------------------------------------------------
              $500,000 - $999,999  2.04%           2.00%          1.75%
              -------------------------------------------------------------------------
              $1,000,000+          0.00%(/1/)      0.00%(/1/)     0.75%(/2/)
</TABLE>
 
              30/70 Portfolio
<TABLE>
<CAPTION>
                                                                  Discount or
                                   Sales Charge as Sales Charge   Commission to
              Amount of            % of Net        as % of Public Dealers as % of
              Purchase             Amount Invested Offering Price Public Offering Price
              -------------------------------------------------------------------------
              <S>                  <C>             <C>            <C>
              $0 - $49,999         4.71%           4.50%          4.00%
              -------------------------------------------------------------------------
              $50,000 - $99,999    4.17%           4.00%          3.50%
              -------------------------------------------------------------------------
              $100,000 - $249,999  3.63%           3.50%          3.00%
              -------------------------------------------------------------------------
              $250,000 - $499,999  2.56%           2.50%          2.00%
              -------------------------------------------------------------------------
              $500,000 - $999,999  2.04%           2.00%          1.75%
              -------------------------------------------------------------------------
              $1,000,000+          0.00%(/1/)      0.00%(/1/)     0.50%(/2/)
</TABLE>
 
           1.As shown, investors that purchase more than $1,000,000 of any
             Portfolio's Class A shares will not pay any initial sales charge
             on such purchase. However, purchasers of $1,000,000 or more of
             Class A shares (other than those purchasers described below under
             "Sales at Net Asset Value" where no commission is paid) will be
             subject to a CDSC of 1% if such shares are redeemed during the
             first 18 months after such shares are purchased unless such pur-
             chaser is eligible for a waiver of the CDSC as described under
             "Waiver of Contingent Deferred Sales Charges" above. See "Class A
             Deferred Sales Charge" below.
           2.The Distributor will pay a commission to dealers who sell
             amounts of $1,000,000 or more of Class A shares (or who sell
             Class A shares at net asset value to certain employer-sponsored
             plans as outlined in "Sales at Net Asset Value" below) of the
             90/10 Portfolio and the 60/40 Portfolio according to the follow-
             ing schedule: 0.75% of the first $2,000,000, 0.50% of amounts
             from $2,000,001 to $5,000,000, and 0.25% of amounts over
             $5,000,000; and of the 30/70 Portfolio according to the following
             schedule: 0.50% of the first $2,000,000, and 0.25% of amounts
             over $2,000,000.
 
                 Each Portfolio receives the entire net asset value of its Class
           A shares purchased by investors. The Distributor receives the
           sales charge shown above less any applicable discount or commis-
           sion "reallowed" to participating brokers in the amounts indicated
           in the table above. The Distributor may, however, elect to reallow
           the entire sales charge to participating brokers for all sales
           with respect to which orders are placed with the Distributor for
           any particular Portfolio during a particular period. During such
           periods as may from time to time be designated by the Distributor,
           the Distributor will pay an additional amount of up to 0.50% of
           the purchase price on sales of Class A shares of all or selected
           Portfolios purchased to each participating broker which obtains
           purchase orders in amounts exceeding thresholds established from
           time to time by the Distributor. From time to time, the Distribu-
           tor, its parent and/or its affiliates may make additional payments
           to one or more participating brokers based upon factors such as
           the level of sales or the length of time clients' assets have re-
           mained in the Trust.
               Shares issued pursuant to the automatic reinvestment of income
           dividends or capital gains distributions are issued at net asset
           value and are not subject to any sales charges.

PIMCO Funds Asset Allocation Series

 
                                      26
<PAGE>
 
               Under the circumstances described below, investors may be enti-
            tled to pay reduced sales charges for Class A shares.
 
            Combined Purchase Privilege Investors may qualify for a reduced
            sales charge by combining purchases of the Class A shares of one
            or more Portfolios or other series of the Trust or PIMCO Funds:
            Pacific Investment Management Series which offer Class A shares
            (together, "eligible PIMCO Funds") into a "single purchase," if
            the resulting purchase totals at least $50,000. The term "single
            purchase" refers to:
                (i) a single purchase by an individual, or concurrent pur-
                    chases, which in the aggregate are at least equal to the
                    prescribed amounts, by an individual, his or her spouse
                    and their children under the age of 21 years purchasing
                    Class A shares of the eligible PIMCO Funds for his, her or
                    their own account;
                (ii) a single purchase by a trustee or other fiduciary pur-
                     chasing shares for a single trust, estate or fiduciary
                     account although more than one beneficiary is involved;
                     or
                (iii) a single purchase for the employee benefit plans of a
                      single employer.
               For further information, call the Distributor at 1-800-426-0107
            or your broker.
 
            Cumulative Quantity Discount (Right of Accumulation) A purchase of
            additional Class A shares of any eligible PIMCO Fund may qualify
            for a Cumulative Quantity Discount at the rate applicable to the
            discount bracket obtained by adding:
                (i) the investor's current purchase;
                (ii) the value (at the close of business on the day of the
                     current purchase) of all Class A shares of any eligible
                     PIMCO Fund held by the investor computed at the maximum
                     offering price; and
                (iii) the value of all shares described in paragraph (ii)
                      owned by another shareholder eligible to be combined
                      with the investor's purchase into a "single purchase" as
                      defined above under "Combined Purchase Privilege."
               For example, if you owned Class A shares of the 90/10 Portfolio
            worth $25,000 at the current maximum offering price and wished to
            purchase Class A shares of the 60/40 Portfolio worth an additional
            $30,000, the sales charge for the $30,000 purchase would be at the
            4.50% rate applicable to a single $55,000 purchase of shares of
            the 90/10 Portfolio, rather than the 5.50% rate.
 
            Letter of Intent An investor may also obtain a reduced sales
            charge by means of a written Letter of Intent, which expresses an
            intention to invest not less than $50,000 within a period of 13
            months in Class A shares of any eligible PIMCO Fund(s). Each pur-
            chase of shares under a Letter of Intent will be made at the pub-
            lic offering price or prices applicable at the time of such pur-
            chase to a single transaction of the dollar amount indicated in
            the Letter. At the investor's option, a Letter of Intent may in-
            clude purchases of Class A shares of any eligible PIMCO Fund made
            not more than 90 days prior to the date the Letter of Intent is
            signed; however, the 13-month period during which the Letter is in
            effect will begin on the date of the earliest purchase to be in-
            cluded and the sales charge on any purchases prior to the Letter
            will not be adjusted.
               Investors qualifying for the Combined Purchase Privilege de-
            scribed above may purchase shares of the eligible PIMCO Funds un-
            der a single Letter of Intent. For example, if at the time you
            sign a Letter of Intent to invest at least $100,000 in Class A
            shares of any Portfolio, you and your spouse each purchase Class A
            shares of the 90/10 Portfolio worth $30,000 (for a total of
            $60,000), it will only be necessary to invest a total of $40,000
            during the following 13 months in Class A shares of any of the
            Portfolios to qualify for the 3.50% sales charge on the total
            amount being invested (the sales charge applicable to an invest-
            ment of $100,000 in any of the Portfolios).
               A Letter of Intent is not a binding obligation to purchase the
            full amount indicated. The minimum initial investment under a Let-
            ter of Intent is 5% of such amount. Shares purchased with the
            first 5% of such amount will be held in escrow (while remaining
            registered in your name) to secure payment of the higher sales
            charge applicable to the shares actually purchased in the event
            the full intended amount is not purchased. If the full amount in-
            dicated is not purchased, a sufficient amount of such escrowed
            shares will be involuntarily redeemed to pay the additional sales
            charge applicable to the amount actually purchased, if necessary.
            Dividends on escrowed shares, whether paid in cash

                                                                
                                                             Prospectus     
 
                                       27
<PAGE>
 

            or reinvested in additional eligible PIMCO Fund shares, are not
            subject to escrow. When the full amount indicated has been pur-
            chased, the escrow will be released. If you wish to enter into a
            Letter of Intent in conjunction with your initial investment in
            Class A shares of a Portfolio, you should complete the appropriate
            portion of the account application. If you are a current Class A
            shareholder desiring to do so you may obtain a form of Letter of
            Intent by contacting the Distributor at 1-800-426-0107 or any bro-
            ker participating in this program.
 
            Reinstatement Privilege A Class A shareholder who has caused any
            or all of his shares to be redeemed may reinvest all or any por-
            tion of the redemption proceeds in Class A shares of any eligible
            PIMCO Fund at net asset value without any sales charge, provided
            that such reinvestment is made within 120 calendar days after the
            redemption or repurchase date. Shares are sold to a reinvesting
            shareholder at the net asset value next determined. See "How Net
            Asset Value is Determined." A reinstatement pursuant to this priv-
            ilege will not cancel the redemption transaction and, consequent-
            ly, any gain or loss so realized may be recognized for federal tax
            purposes except that no loss may be recognized to the extent that
            the proceeds are reinvested in shares of the same Portfolio within
            30 days. The reinstatement privilege may be utilized by a share-
            holder only once, irrespective of the number of shares redeemed,
            except that the privilege may be utilized without limit in connec-
            tion with transactions whose sole purpose is to transfer a share-
            holder's interest in a Portfolio to his Individual Retirement Ac-
            count or other qualified retirement plan account. An investor may
            exercise the reinstatement privilege by written request sent to
            the Distributor or to the investor's broker.
 
            Sales at Net Asset Value Each Portfolio may sell its Class A
            shares at net asset value without a sales charge to (a) current or
            retired officers, trustees, directors or employees of the Trust,
            the Adviser or the Distributor, a parent, brother or sister of any
            such officer, trustee, director or employee or a spouse or child
            of any of the foregoing persons, or any trust, profit sharing or
            pension plan for the benefit of any such person and to any other
            person if the Distributor anticipates that there will be minimal
            sales expenses associated with the sale, (b) current or retired
            trustees of PIMCO Funds: Pacific Investment Management Series, (c)
            current registered representatives and other full-time employees
            of participating brokers or such persons' spouses or for trust or
            custodial accounts for their minor children, (d) trustees or other
            fiduciaries purchasing shares for certain plans sponsored by em-
            ployers, professional organizations or associations or charitable
            organizations, the trustee, administrator, fiduciary, broker,
            trust company or registered investment adviser for which has an
            agreement with the Distributor with respect to such purchases (in-
            cluding provisions related to minimum levels of investment in the
            Trust), and to participants in such plans and their spouses pur-
            chasing for their account(s) or IRAs (with the exception of Roth
            IRAs), (e) participants investing through accounts known as "wrap
            accounts" established with brokers or dealers approved by the Dis-
            tributor where such brokers or dealers are paid a single, inclu-
            sive fee for brokerage and investment management services, (f)
            client accounts of broker-dealers or registered investment advis-
            ers affiliated with such broker-dealers with which the Distributor
            has an agreement for the use of PIMCO Funds: Multi-Manager Series
            in particular investment products or programs, and (g) accounts
            for which a trust company affiliated with the Trust or the Adviser
            serves as trustee or custodian. As described above, the Distribu-
            tor will not pay any initial commission to dealers upon the sale
            of Class A shares to the purchasers described in this paragraph
            except for sales to purchasers described under (d) in this para-
            graph.
 
            Notification of Distributor An investor or participating broker
            must notify the Distributor whenever a quantity discount or re-
            duced sales charge is applicable to a purchase and must provide
            the Distributor with sufficient information at the time of pur-
            chase to verify that each purchase qualifies for the privilege or
            discount. Upon such notification, the investor will receive the
            lowest applicable sales charge. The quantity discounts described
            above may be modified or terminated at any time.
 
            Class A Deferred Sales Charge For all Portfolios, investors who
            purchase $1,000,000 or more of Class A shares (and, thus, purchase
            such shares without any initial sales charge) may be subject to a
            1% CDSC (the "Class A CDSC") if such shares are redeemed within 18
            months of their purchase. The Class A CDSC does not apply to in-
            vestors purchasing $1,000,000 or more of any Portfolio's Class A
            shares if such investors are otherwise eligible to purchase Class
            A shares without any sales charge because they are described under
            "Sales at Net Asset Value" above.

PIMCO Funds Asset Allocation Series
 
                                      28
<PAGE>
 
               For purchases subject to the Class A CDSC, a 1% CDSC will apply
            for any redemption of such Class A shares that occurs within 18
            months of their purchase. No CDSC will be imposed if the shares
            redeemed have been acquired through the reinvestment of dividends
            or capital gains distributions or if the amount redeemed is de-
            rived from increases in the value of the account above the amount
            of purchase payments subject to the CDSC. In determining whether a
            CDSC is payable, it is assumed that Class A shares acquired
            through the reinvestment of dividends and distributions are re-
            deemed first, and thereafter that Class A shares that have been
            held by an investor for the longest period of time are redeemed
            first.
               The Class A CDSC is currently waived in connection with certain
            redemptions as described above under "Alternative Purchase Ar-
            rangements--Waiver of Contingent Deferred Sales Charges." For more
            information about the Class A CDSC, call the Distributor at 1-800-
            426-0107.
 
            Participating Brokers Investment dealers and other financial in-
            termediaries provide varying arrangements for their clients to
            purchase and redeem Portfolio shares. Some may establish higher
            minimum investment requirements than set forth above. Firms may
            arrange with their clients for other investment or administrative
            services and may independently establish and charge transaction
            fees and/or other additional amounts to their clients for such
            services, which charges would reduce clients' return. Firms also
            may hold Portfolio shares in nominee or street name as agent for
            and on behalf of their customers. In such instances, the Trust's
            transfer agent will have no information with respect to or control
            over accounts of specific shareholders. Such shareholders may ob-
            tain access to their accounts and information about their accounts
            only from their broker. In addition, certain privileges with re-
            spect to the purchase and redemption of shares or the reinvestment
            of dividends may not be available through such firms. Some firms
            may participate in a program allowing them access to their cli-
            ents' accounts for servicing including, without limitation, trans-
            fers of registration and dividend payee changes; and may perform
            functions such as generation of confirmation statements and dis-
            bursement of cash dividends. This Prospectus should be read in
            connection with such firms' material regarding their fees and
            services.
 
 
Deferred    Class B shares are sold at their current net asset value without
Sales       any initial sales charge. The full amount of an investor's pur-
Charge      chase payment will be invested in shares of the Portfolio(s) se-
Alternative lected. A CDSC will be imposed on Class B shares if an investor
- -- Class B  redeems an amount which causes the current value of the investor's
Shares      account for a Portfolio to fall below the total dollar amount of
            purchase payments subject to the CDSC, except that no CDSC is im-
            posed if the shares redeemed have been acquired through the rein-
            vestment of dividends or capital gains distributions or if the
            amount redeemed is derived from increases in the value of the ac-
            count above the amount of purchase payments subject to the CDSC.
               Whether a CDSC is imposed and the amount of the CDSC will de-
            pend on the number of years since the investor made a purchase
            payment from which an amount is being redeemed. Purchases are sub-
            ject to the CDSC according to the following schedule:
 
 
               Year Since Purchase   Percentage Contingent
               Payment was Made      Deferred Sales Charge
               ===========================================
               First                   5
               -------------------------------------------
               Second                  4
               -------------------------------------------
               Third                   3
               -------------------------------------------
               Fourth                  3
               -------------------------------------------
               Fifth                   2
               -------------------------------------------
               Sixth                   1
               -------------------------------------------
               Seventh                 0*
 
            *After the seventh year, Class B shares convert into Class A
            shares as described below.

                                                                
                                                             Prospectus     
 
                                       29
<PAGE>
 
 
               In determining whether a CDSC is payable, it is assumed that
            the purchase payment from which a redemption is made is the earli-
            est purchase payment from which a redemption or exchange has not
            already been fully effected.
               The following example will illustrate the operation of the
            Class B CDSC:
               Assume that an individual opens an account and makes a purchase
            payment of $10,000 for Class B shares of a Portfolio and that six
            months later the value of the investor's account for that Portfo-
            lio has grown through investment performance and reinvestment of
            distributions to $11,000. The investor then may redeem up to
            $1,000 from that Portfolio ($11,000 minus $10,000) without incur-
            ring a CDSC. If the investor should redeem $3,000, a CDSC would be
            imposed on $2,000 of the redemption (the amount by which the in-
            vestor's account for the Portfolio was reduced below the amount of
            the purchase payment). At the rate of 5%, the Class B CDSC would
            be $100.
               In determining whether an amount is available for redemption
            without incurring a CDSC, the purchase payments made for all Class
            B shares in the shareholder's account with the particular Portfo-
            lio are aggregated, and the current value of all such shares is
            aggregated. Any CDSC imposed on a redemption of Class B shares is
            paid to the Distributor.
               Class B shares are subject to higher distribution fees than
            Class A shares for a fixed period after their purchase, after
            which they automatically convert to Class A shares and are no
            longer subject to such higher distribution fees. Class B shares of
            each Portfolio automatically convert into Class A shares after
            they have been held for seven years.
               For sales of Class B shares made and services rendered to Class
            B shareholders, the Distributor intends to make payments to par-
            ticipating brokers, at the time a shareholder purchases Class B
            shares, of 4.00% of the purchase amount for each of the Portfo-
            lios. During such periods as may from time to time be designated
            by the Distributor, the Distributor will pay selected participat-
            ing brokers an additional amount of up to .50% of the purchase
            price on sales of Class B shares of all or selected Portfolios
            purchased to each participating broker which obtains purchase or-
            ders in amounts exceeding thresholds established from time to time
            by the Distributor.
               The Class B CDSC is currently waived in connection with certain
            redemptions as described above under "Alternative Purchase Ar-
            rangements--Waiver of Contingent Deferred Sales Charges." For more
            information about the Class B CDSC, call the Distributor at 1-800-
            426-0107.
 
 
Asset Based Class C shares are sold at their current net asset value without
Sales       any initial sales charge. A CDSC is imposed on Class C shares if
Charge      an investor redeems an amount which causes the current value of
Alternative the investor's account for a Portfolio to fall below the total
- -- Class C  dollar amount of purchase payments subject to the CDSC, except
Shares      that no CDSC is imposed if the shares redeemed have been acquired
            through the reinvestment of dividends or capital gains distribu-
            tions or if the amount redeemed is derived from increases in the
            value of the account above the amount of purchase payments subject
            to the CDSC. All of an investor's purchase payments are invested
            in shares of the Portfolio(s) selected.
               Whether a CDSC is imposed and the amount of the CDSC will de-
            pend on the number of years since the investor made a purchase
            payment from which an amount is being redeemed. Purchases are sub-
            ject to the CDSC according to the following schedule:
 
 
               Year Since Purchase   Percentage Contingent
               Payment was Made      Deferred Sales Charge
               ===========================================
               First                   1
               -------------------------------------------
               Thereafter              0
 
 
                  In determining whether a CDSC is payable, it is assumed that
            the purchase payment from which the redemption is made is the ear-
            liest purchase payment (from which a redemption or exchange has
            not already been effected).


PIMCO Funds Asset Allocation Series

 
                                      30
<PAGE>
 

               The following example will illustrate the operation of the
            Class C CDSC:
               Assume that an individual opens an account and makes a purchase
            payment of $10,000 for Class C shares of a Portfolio and that six
            months later the value of the investor's account for that Portfo-
            lio has grown through investment performance and reinvestment of
            distributions to $11,000. The investor then may redeem up to
            $1,000 from that Portfolio ($11,000 minus $10,000) without incur-
            ring a CDSC. If the investor should redeem $3,000, a CDSC would be
            imposed on $2,000 of the redemption (the amount by which the in-
            vestor's account for the Portfolio was reduced below the amount of
            the purchase payment). At the rate of 1%, the Class C CDSC would
            be $20.
               In determining whether an amount is available for redemption
            without incurring a CDSC, the purchase payments made for all Class
            C shares in the shareholder's account with the particular Portfo-
            lio are aggregated, and the current value of all such shares is
            aggregated. Any CDSC imposed on a redemption of Class C shares is
            paid to the Distributor. Unlike Class B shares, Class C shares do
            not automatically convert to any other class of shares of the
            Portfolios.
               Except as described below, for sales of Class C shares made and
            services rendered to Class C shareholders, the Distributor expects
            to make payments to participating brokers, at the time the share-
            holder purchases Class C shares, of 1.00% (representing .75% dis-
            tribution fees and .25% servicing fees) of the purchase amount for
            all Portfolios. For sales of Class C shares made to participants
            making periodic purchases of not less than $50 through certain em-
            ployer sponsored savings plans which are clients of a broker-
            dealer with which the Distributor has an agreement with respect to
            such purchases, no payments are made at the time of purchase. Dur-
            ing such periods as may from time to time be designated by the
            Distributor, the Distributor will pay an additional amount of up
            to .50% of the purchase price on sales of Class C shares of all or
            selected Portfolios purchased to each participating broker which
            obtains purchase orders in amounts exceeding thresholds estab-
            lished from time to time by the Distributor.
               The Class C CDSC is currently waived in connection with certain
            redemptions as described above under "Alternative Purchase Ar-
            rangements--Waiver of Contingent Deferred Sales Charges." For more
            information about the Class C CDSC, contact the Distributor at 1-
            800-426-0107.
 
            Exchange Privilege
               
            A shareholder may exchange Class A, Class B and Class C shares of
            any Portfolio for the same Class of shares of any other Portfolio
            or other series of the Trust in an account with identical regis-
            tration on the basis of their respective net asset values. Class
            A, Class B and Class C shares of each Portfolio may also be ex-
            changed for shares of the same class of a series of PIMCO Funds:
            Pacific Investment Management Series. There are currently no ex-
            change fees or charges. All exchanges, including exchanges from a
            Portfolio into another series of the Trust or of PIMCO Funds: Pa-
            cific Investment Management Series, are subject to the $2,500 min-
            imum initial purchase requirement for each Portfolio, except with
            respect to tax-qualified programs and exchanges effected through
            the PIMCO Funds Auto-Exchange plan. An exchange will constitute a
            taxable sale for federal income tax purposes.     
               
               Investors who maintain their account with the Distributor may
            exchange shares by a written exchange request sent to PIMCO Funds
            Distributors LLC, P.O. Box 9688, Providence, RI 02940-0926 or, un-
            less the investor has specifically declined telephone exchange
            privileges on the account application or elected in writing not to
            utilize telephone exchanges, by a telephone request to the Dis-
            tributor at 1-800-426-0107. The Trust will employ reasonable pro-
            cedures to confirm that instructions communicated by telephone are
            genuine, and may be liable for any losses due to unauthorized or
            fraudulent instructions if it fails to employ such procedures. The
            Trust will require a form of personal identification prior to act-
            ing on a caller's telephone instructions, will provide written
            confirmations of such transactions and will record telephone in-
            structions. Exchange forms are available from the Distributor at
            1-800-426-0107 and may be used if there will be no change in the
            registered name or address of the shareholder. Changes in regis-
            tration information or account privileges may be made in writing
            to the Transfer Agent, First Data Investor     
 
                                                                
                                                             Prospectus     



                                       31
<PAGE>
 

            Services Group, Inc., Inc., P.O. Box 9688, Providence, RI 02940-
            0926, or by use of forms which are available from the Distributor.
            A signature guarantee is required. See "How to Buy Shares--Signa-
            ture Guarantee." Telephone exchanges may be made between
            9:00 a.m., Eastern time and the close of regular trading (normally
            4:00 p.m., Eastern time) on the Exchange on any day the Exchange
            is open (generally weekdays other than normal holidays). The Trust
            reserves the right to refuse exchange purchases if, in the judg-
            ment of the Adviser, the purchase would adversely affect the Port-
            folio and its shareholders. In particular, a pattern of exchanges
            characteristic of "market-timing" strategies may be deemed by the
            Adviser to be detrimental to the Trust or a particular Portfolio.
               
               Currently, the Trust limits the number of "round trip" ex-
            changes an investor may make. An investor makes a "round trip" ex-
            change when the investor purchases shares of a particular Portfo-
            lio, subsequently exchanges those shares for shares of a different
            Portfolio or other PIMCO Fund and then exchanges back into the
            originally purchased Portfolio. The Trust has the right to refuse
            any exchange for any investor who completes (by making the ex-
            change back into the shares of the originally purchased Portfolio)
            more than six round trip exchanges in any twelve-month period. Al-
            though the Trust has no current intention of terminating or modi-
            fying the exchange privilege other than as set forth in the pre-
            ceding sentence, it reserves the right to do so at any time. Ex-
            cept as otherwise permitted by Securities and Exchange Commission
            regulations, the Trust will give 60 days' advance notice to share-
            holders of any termination or material modification of the ex-
            change privilege. For further information about exchange privi-
            leges, contact your participating broker or call the Distributor
            at 1-800-426-0107.     
               With respect to Class B and Class C shares, or Class A shares
            subject to a CDSC, if less than all of an investment is exchanged
            out of a Portfolio, any portion of the investment attributable to
            capital appreciation and/or reinvested dividends or capital gains
            distributions will be exchanged first, and thereafter any portions
            exchanged will be from the earliest investment made in the Portfo-
            lio from which the exchange was made. Shareholders should take
            into account the effect of any exchange on the applicability of
            any CDSC that may be imposed upon any subsequent redemption.
               Investors may also select the PIMCO Funds Auto-Exchange plan
            which establishes automatic periodic exchanges. For further infor-
            mation on automatic exchanges, see "How to Buy Shares--PIMCO Funds
            Auto-Exchange" above.
 
            How to Redeem
 
            Class A, Class B or Class C shares may be redeemed through a par-
            ticipating broker, by telephone, by submitting a written redemp-
            tion request directly to the Transfer Agent (for non-broker ac-
            counts), or through an Automatic Withdrawal Plan or PIMCO Funds
            Fund Link.
 
               A CDSC may apply to a redemption of Class A, Class B or Class C
            shares. See "Alternative Purchase Arrangements" above. Shares are
            redeemed at their net asset value next determined after a proper
            redemption request has been received, less any applicable CDSC.
            There is no charge by the Distributor (other than an applicable
            CDSC) with respect to a redemption; however, a participating bro-
            ker who processes a redemption for an investor may charge custom-
            ary commissions for its services. Dealers and other financial
            services firms are obligated to transmit orders promptly. Requests
            for redemption received by dealers or other firms prior to the
            close of regular trading (normally 4:00 p.m., Eastern time) on the
            Exchange on a regular business day and received by the Distributor
            prior to the close of the Distributor's business day will be con-
            firmed at the net asset value effective as of the closing of the
            Exchange on that day, less any applicable CDSC.
 
 
Direct
Redemption  A shareholder's original account application permits the share-
            holder to redeem by written request and by telephone (unless the
            shareholder specifically elects not to utilize telephone redemp-
            tions) and to elect one or more of the additional redemption pro-
            cedures described below. A shareholder may change the instructions
            indicated on his original account application, or may request ad-
            ditional redemption options, only by transmitting a written direc-
            tion to the
 
PIMCO Funds Asset Allocation Series

                                       32
<PAGE>
 

            Transfer Agent. Requests to institute or change any of the addi-
            tional redemption procedures will require a signature guarantee.
               Redemption proceeds will normally be mailed to the redeeming
            shareholder within seven days or, in the case of wire transfer or
            Fund Link redemptions, sent to the designated bank account within
            one business day. Fund Link redemptions may be received by the
            bank on the second or third business day. In cases where shares
            have recently been purchased by personal check, redemption pro-
            ceeds may be withheld until the check has been collected, which
            may take up to 15 days. To avoid such withholding, investors
            should purchase shares by certified or bank check or by wire
            transfer.
 
 
Written        
Requests    To redeem shares in writing (whether or not represented by certif-
            icates), a shareholder must send the following items to the Trans-
            fer Agent, First Data Investor Services Group, Inc., P.O. Box
            9688, Providence, RI 02940-0926:     
                (1) a written request for redemption signed by all registered
                    owners exactly as the account is registered on the Trans-
                    fer Agent's records, including fiduciary titles, if any,
                    and specifying the account number and the dollar amount or
                    number of shares to be redeemed;
                (2) for certain redemptions described below, a guarantee of
                    all signatures on the written request or on the share cer-
                    tificate or accompanying stock power, if required, as de-
                    scribed under "How to Buy Shares--Signature Guarantee";
                (3) any share certificates issued for any of the shares to be
                    redeemed (see "Certificated Shares" below); and
                (4) any additional documents which may be required by the
                    Transfer Agent for redemption by corporations, partner-
                    ships or other organizations, executors, administrators,
                    trustees, custodians or guardians, or if the redemption is
                    requested by anyone other than the shareholder(s) of rec-
                    ord.
               
               Transfers of shares are subject to the same requirements. A
            signature guarantee is not required for redemptions of $50,000 or
            less, requested by and payable to all shareholders of record for
            the account, to be sent to the address of record for that account.
            To avoid delay in redemption or transfer, shareholders having any
            questions about these requirements should contact the Transfer
            Agent in writing or call the Distributor at 1-800-426-0107 before
            submitting a request. Redemption or transfer requests will not be
            honored until all required documents in the proper form have been
            received by the Transfer Agent. This redemption option does not
            apply to shares held in broker "street name" accounts.     
               If the proceeds of the redemption (i) exceed $50,000, (ii) are
            to be paid to a person other than the record owner, (iii) are to
            be sent to an address other than the address of the account on the
            Transfer Agent's records, or (iv) are to be paid to a corporation,
            partnership, trust or fiduciary, the signature(s) on the redemp-
            tion request and on the certificates, if any, or stock power must
            be guaranteed as described above, except that the Distributor may
            waive the signature guarantee requirement for redemptions up to
            $2,500 by a trustee of a qualified retirement plan, the adminis-
            trator for which has an agreement with the Distributor.
 
 
Telephone   The Trust accepts telephone requests for redemption of
Redemptions uncertificated shares for amounts up to $50,000 within any seven
            calendar day period, except for investors who have specifically
            declined telephone redemption privileges on the account applica-
            tion or elected in writing not to utilize telephone redemptions.
            The proceeds of a telephone redemption will be sent to the record
            shareholder at his record address. Changes in account information
            must be made in a written authorization with a signature guaran-
            tee. See "How to Buy Shares--Signature Guarantee." Telephone re-
            demptions will not be accepted during the 30-day period following
            any change in an account's record address. This redemption option
            does not apply to shares held in broker "street name" accounts.
               By completing an account application, an investor agrees that
            the Trust, the Distributor and the Transfer Agent shall not be li-
            able for any loss incurred by the investor by reason of the Trust
            accepting unauthorized telephone redemption requests for his ac-
            count if the Trust reasonably believes the instructions to be gen-
            uine. Thus, shareholders risk possible losses in the event of a
            telephone redemption not authorized by them. The Trust may accept
            telephone

                                                                
                                                             Prospectus     

 
                                       33
<PAGE>
 

            redemption instructions from any person identifying himself as the
            owner of an account or the owner's broker where the owner has not
            declined in writing to utilize this service. The Trust will employ
            reasonable procedures to confirm that instructions communicated by
            telephone are genuine, and may be liable for any losses due to un-
            authorized or fraudulent instructions if it fails to employ such
            procedures. The Trust will require a form of personal identifica-
            tion prior to acting on a caller's telephone instructions, will
            provide written confirmations of such transactions and will record
            telephone instructions.
               
               A shareholder making a telephone redemption should call the
            Distributor at 1-800-426-0107 and state (i) the name of the share-
            holder as it appears on the Transfer Agent's records, (ii) his ac-
            count number with the Trust, (iii) the amount to be withdrawn and
            (iv) the name of the person requesting the redemption. Usually the
            proceeds are sent to the investor on the next Trust business day
            after the redemption is effected, provided the redemption request
            is received prior to the close of regular trading (normally 4:00
            p.m., Eastern time) on the Exchange that day. If the redemption
            request is received after the close of the Exchange, the redemp-
            tion is effected on the following Trust business day at that day's
            net asset value and the proceeds are usually sent to the investor
            on the second following Trust business day. The Trust reserves the
            right to terminate or modify the telephone redemption service at
            any time. During times of severe disruptions in the securities
            markets, the volume of calls may make it difficult to redeem by
            telephone, in which case a shareholder may wish to send a written
            request for redemption as described under "Written Requests"
            above. Telephone communications may be recorded by the Distributor
            or the Transfer Agent.     
 
 
Fund Link      
Redemptions If a shareholder has established Fund Link, the shareholder may
            redeem shares by telephone and have the redemption proceeds sent
            to a designated account at a financial institution. Fund Link is
            normally established within 45 days of receipt of a Fund Link ap-
            plication by the Transfer Agent. To use Fund Link for redemptions,
            call the Distributor at 1-800-426-0107. Subject to the limitations
            set forth above under "Telephone Redemptions," the Distributor,
            the Trust and the Transfer Agent may rely on instructions by any
            registered owner believed to be genuine and will not be responsi-
            ble to any shareholder for any loss, damage or expense arising out
            of such instructions. Requests received by the Transfer Agent
            prior to the close of regular trading (normally 4:00 p.m., Eastern
            time) on the Exchange on a business day will be processed at the
            net asset value on that day and the proceeds (less any CDSC) will
            normally be sent to the designated bank account on the following
            business day and received by the bank on the second or third busi-
            ness day. If the redemption request is received after the close of
            regular trading on the Exchange, the redemption is effected on the
            following business day. Shares purchased by check may not be re-
            deemed through Fund Link until such shares have been owned (i.e.,
            paid for) for at least 15 days. Fund Link may not be used to re-
            deem shares held in certificated form.     

               Changes in bank account information must be made by completing
            a new Fund Link application, signed by all owners of record of the
            account, with all signatures guaranteed. See "How to Buy Shares--
            Signature Guarantee." See "How to Buy Shares--PIMCO Funds Fund
            Link" for information on establishing the Fund Link privilege. The
            Trust may terminate the Fund Link program at any time without no-
            tice to shareholders. This redemption option does not apply to
            shares held in broker "street name" accounts.
 
 
PIMCO Funds
Automated   PIMCO Funds Automated Telephone System ("ATS") is an automated
Telephone   telephone system that enables shareholders to perform a number of
System      account transactions automatically using a touch-tone telephone.
            ATS may be used on already- established Portfolio accounts after
            you obtain a Personal Identification Number (PIN) by calling the
            special ATS number: 1-800-223-2413.
            Purchasing Shares. You may purchase shares in amounts up to
            $100,000 by telephone by calling 1-800-223-2413. You must have es-
            tablished ATS privileges to link your bank account with the Port-
            folio to pay for these purchases.
            Exchanging Shares. With the PIMCO Funds Exchange Privilege, you
            can exchange shares automatically by telephone from your Fund Link
            Account to another PIMCO Funds account you have already estab-
            lished by calling 1-800-223-2413. Please refer to "Exchange Privi-
            lege" for details.

PIMCO Funds Asset Allocation Series
 
                                       34
<PAGE>
 

             Redemptions. You may redeem shares by telephone automatically by
             calling 1-800-223-2413 and the Portfolio will send the proceeds
             directly to your Portfolio bank account. Please refer to "How to
             Redeem" for details.
 
 
Expedited    If a shareholder has given authorization for expedited wire re-
Wire         demption, shares can be redeemed and the proceeds sent by federal
Transfer     wire transfer to a single previously designated bank account. Re-
Redemptions  quests received by the Trust prior to the close of the Exchange
             will result in shares being redeemed that day at the next deter-
             mined net asset value (less any CDSC) and normally the proceeds
             being sent to the designated bank account the following business
             day. The bank must be a member of the Federal Reserve wire system.
             Delivery of the proceeds of a wire redemption request may be de-
             layed by the Trust for up to 7 days if the Distributor deems it
             appropriate under then current market conditions. Once authoriza-
             tion is on file, the Trust will honor requests by any person iden-
             tifying himself as the owner of an account or the owner's broker
             by telephone at 1-800-426-0107 or by written instructions. The
             Trust cannot be responsible for the efficiency of the Federal Re-
             serve wire system or the shareholder's bank. The Trust does not
             currently charge for wire transfers. The shareholder is responsi-
             ble for any charges imposed by the shareholder's bank. The minimum
             amount that may be wired is $2,500. The Trust reserves the right
             to change this minimum or to terminate the wire redemption privi-
             lege. Shares purchased by check may not be redeemed by wire trans-
             fer until such shares have been owned (i.e., paid for) for at
             least 15 days. Expedited wire transfer redemptions may be autho-
             rized by completing a form available from the Distributor. Wire
             redemptions may not be used to redeem shares in certificated form.
             To change the name of the single bank account designated to re-
             ceive wire redemption proceeds, it is necessary to send a written
             request with signatures guaranteed to PIMCO Funds Distributors
             LLC, P.O. Box 9688, Providence, RI 02940-0926. See "How to Buy
             Shares--Signature Guarantee." This redemption option does not ap-
             ply to shares held in broker "street name" accounts.
 
 
Certificated To redeem shares for which certificates have been issued, the cer-
Shares       tificates must be mailed to or deposited with the Trust, duly en-
             dorsed or accompanied by a duly endorsed stock power or by a writ-
             ten request for redemption. Signatures must be guaranteed as de-
             scribed under "How to Buy Shares--Signature Guarantee." Further
             documentation may be requested from institutions or fiduciary ac-
             counts, such as corporations, custodians (e.g., under the Uniform
             Gifts to Minors Act), executors, administrators, trustees or
             guardians ("institutional account owners"). The redemption request
             and stock power must be signed exactly as the account is regis-
             tered, including indication of any special capacity of the regis-
             tered owner.
 
 
Automatic    An investor who owns or buys shares of a Portfolio having a net
Withdrawal   asset value of $10,000 or more may open an Automatic Withdrawal
Plan         Plan and have a designated sum of money (not less than $100 per
             Portfolio) paid monthly (or quarterly) to the investor or another
             person. Such a plan may be established by completing the appropri-
             ate section of the account application or you may obtain an Auto-
             matic Withdrawal Plan application from the Distributor or your
             broker. If an Automatic Withdrawal Plan is set up after the ac-
             count is established providing for payment to a person other than
             the record shareholder or to an address other than the address of
             record, a signature guarantee is required. See "How to Buy
             Shares--Signature Guarantee." Class A, Class B and Class C shares
             of any Portfolio are deposited in a plan account and all distribu-
             tions are reinvested in additional shares of the particular class
             of the Portfolio at net asset value. Shares in a plan account are
             then redeemed at net asset value (less any applicable CDSC) to
             make each withdrawal payment. Any applicable CDSC may be waived
             for certain redemptions under an Automatic Withdrawal Plan. See
             "Alternative Purchase Arrangements--Waiver of Contingent Deferred
             Sales Charges."
                Redemptions for the purpose of withdrawals are ordinarily made
             on the business day preceding the day of payment at that day's
             closing net asset value and checks are mailed on the day of pay-
             ment selected by the shareholder. The Transfer Agent may acceler-
             ate the redemption and check mailing date by one day to avoid
             weekend delays. Payment will be made to any person the investor
             designates; however, if the shares are registered in the name of a
             trustee or other fiduciary, payment will be made only to the fidu-
             ciary, except in the case of a profit-sharing or pension plan
             where payment will be made to the designee. As withdrawal payments
             may include a return of principal, they
 
                                                                
                                                             Prospectus     


                                       35
<PAGE>
 

            cannot be considered a guaranteed annuity or actual yield of in-
            come to the investor. The redemption of shares in connection with
            an Automatic Withdrawal Plan may result in a gain or loss for tax
            purposes. Continued withdrawals in excess of income will reduce
            and possibly exhaust invested principal, especially in the event
            of a market decline. The maintenance of an Automatic Withdrawal
            Plan concurrently with purchases of additional shares of the Port-
            folio would be disadvantageous to the investor because of the CDSC
            that may become payable on such withdrawals in the case of Class
            A, Class B or Class C shares and because of the initial sales
            charge in the case of Class A shares. For this reason, the minimum
            investment accepted for a Portfolio while an Automatic Withdrawal
            Plan is in effect for that Portfolio is $1,000, and an investor
            may not maintain a plan for the accumulation of shares of the
            Portfolio (other than through reinvestment of distributions) and
            an Automatic Withdrawal Plan at the same time. The Trust or the
            Distributor may terminate or change the terms of the Automatic
            Withdrawal Plan at any time.
               Because the Automatic Withdrawal Plan may involve invasion of
            capital, investors should consider carefully with their own finan-
            cial advisors whether the plan and the specified amounts to be
            withdrawn are appropriate in their circumstances. The Trust and
            the Distributor make no recommendations or representations in this
            regard.
 
 
Redemptions The Trust agrees to redeem shares of each Portfolio solely in cash
in Kind     up to the lesser of $250,000 or 1% of the Portfolio's net assets
            during any 90-day period for any one shareholder. In consideration
            of the best interests of the remaining shareholders, the Trust re-
            serves the right to pay any redemption proceeds exceeding this
            amount in whole or in part by a distribution in kind of securities
            held by a Portfolio in lieu of cash. When shares are redeemed in
            kind, the redeeming shareholder may incur transaction costs upon
            the disposition of the securities received in the distribution.
 
            Distributor and Distribution and Servicing Plans
 
            PIMCO Funds Distributors LLC (the "Distributor"), a wholly owned
            subsidiary of the Adviser, is the principal underwriter of the
            Trust's shares and in that connection makes distribution and ser-
            vicing payments to participating brokers and servicing payments to
            certain banks and other financial intermediaries in connection
            with the sale of Class B and Class C shares and servicing payments
            to participating brokers, certain banks and other financial inter-
            mediaries in connection with the sale of Class A shares. In the
            case of Class A shares, these parties are also compensated based
            on the amount of the front-end sales charge reallowed by the Dis-
            tributor, except in cases where Class A shares are sold without a
            front-end sales charge (although the Distributor may pay brokers
            additional compensation in connection with sales of Class A shares
            without a sales charge). In the case of Class B shares, partici-
            pating brokers and other financial intermediaries are compensated
            by an advance of a sales commission by the Distributor. In the
            case of Class C shares, part or all of the first year's distribu-
            tion and servicing fee is generally paid at the time of sale.
               Pursuant to a Distribution Agreement with the Trust, with re-
            spect to each Portfolio's Class A, Class B and Class C shares, the
            Distributor bears various other promotional and sales related ex-
            penses, including the cost of printing and mailing prospectuses to
            persons other than current shareholders. The Distributor, located
            at 2187 Atlantic Street, Stamford, Connecticut 06902, is a broker-
            dealer registered with the Securities and Exchange Commission.
 
            Class A Servicing Fees As compensation for services rendered and
            expenses borne by the Distributor in connection with personal
            services rendered to Class A shareholders of the Trust and the
            maintenance of Class A shareholder accounts, the Trust pays the
            Distributor servicing fees up to the annual rate of .25% (calcu-
            lated as a percentage of each Portfolio's average daily net assets
            attributable to Class A shares).
 
            Class B and Class C Distribution and Servicing Fees As compensa-
            tion for services rendered and expenses borne by the Distributor
            in connection with the distribution of Class B and Class C shares
            of the Trust, and in connection with personal services rendered to
            Class B and Class C shareholders of the Trust and the maintenance
            of Class B and Class C shareholder accounts, the Trust pays the
            Distributor servicing and distribution fees up to the annual rates
            set


PIMCO Funds Asset Allocation Series 
                                      36
<PAGE>
 

            forth below (calculated as a percentage of each Portfolio's aver-
            age daily net assets attributable to Class B and Class C shares,
            respectively):
 
 
<TABLE>
<CAPTION>
                                Servicing Distribution
                                Fee       Fee
                ======================================
                <S>             <C>       <C>
                All Portfolios  .25%      .75%
</TABLE>
 
 
               The Class A servicing fees and Class B and Class C distribution
            and servicing fees paid to the Distributor are made under Distri-
            bution and Servicing Plans adopted pursuant to Rule 12b-l under
            the Investment Company Act of 1940, as amended (the "1940 Act"),
            and are of the type known as "compensation" plans. This means
            that, although the Trustees of the Trust are expected to take into
            account the expenses of the Distributor and its predecessors in
            their periodic review of the Distribution and Servicing Plans, the
            fees are payable to compensate the Distributor for services ren-
            dered even if the amount paid exceeds the Distributor's expenses.

               The distribution fee applicable to Class B and Class C shares
            may be spent by the Distributor on any activities or expenses pri-
            marily intended to result in the sale of Class B or Class C
            shares, respectively, including compensation to, and expenses (in-
            cluding overhead and telephone expenses) of, financial consultants
            or other employees of the Distributor or of participating or in-
            troducing brokers who engage in distribution of Class B or Class C
            shares, printing of prospectuses and reports for other than exist-
            ing Class B or Class C shareholders, advertising, and preparation,
            printing and distribution of sales literature. The servicing fee,
            applicable to Class A, Class B and Class C shares of the Trust,
            may be spent by the Distributor on personal services rendered to
            shareholders of the Trust and the maintenance of shareholder ac-
            counts, including compensation to, and expenses (including tele-
            phone and overhead expenses) of, financial consultants or other
            employees of participating or introducing brokers, certain banks
            and other financial intermediaries who aid in the processing of
            purchase or redemption requests or the processing of dividend pay-
            ments, who provide information periodically to shareholders show-
            ing their positions in a Portfolio's shares, who forward communi-
            cations from the Trust to shareholders, who render ongoing advice
            concerning the suitability of particular investment opportunities
            offered by the Trust in light of the shareholders' needs, who re-
            spond to inquiries from shareholders relating to such services, or
            who train personnel in the provision of such services. Distribu-
            tion and servicing fees may also be spent on interest relating to
            unreimbursed distribution or servicing expenses from prior years.

               Many of the Distributor's sales and servicing efforts involve
            the Trust as a whole, so that fees paid by Class A, Class B or
            Class C shares of any Portfolio may indirectly support sales and
            servicing efforts relating to other shares of the same class of
            the Portfolios or other series of the Trust. In reporting its ex-
            penses to the Trustees, the Distributor itemizes expenses that re-
            late to the distribution and/or servicing of a single Portfolio's
            shares, and allocates other expenses among the Portfolios and
            other series of the Trust based on their relative net assets. Ex-
            penses allocated to each Portfolio are further allocated among its
            classes of shares annually based on the relative sales of each
            class, except for any expenses that relate only to the sale or
            servicing of a single class. The Distributor may make payments to
            brokers (and with respect to servicing fees only, to certain banks
            and other financial intermediaries) of up to the following per-
            centages annually of the average daily net assets attributable to
            shares in the accounts of their customers or clients:
 
 
            All Portfolios
 
<TABLE>
<CAPTION>
                               Servicing Distribution
                               Fee       Fee
                =====================================
                <S>            <C>       <C>
                Class A        .25%      N/A
                -------------------------------------
                Class B (/1/)  .25%      None
                -------------------------------------
                Class C (/2/)  .25%      .65%
</TABLE>
 
            1. Payable only with respect to shares outstanding for one year or
               more.
            2. Payable only with respect to shares outstanding for one year or
               more except in the case of shares for which no payment is made to
               the party at the time of sale.
 
                                                                
                                                             Prospectus     

                                       37
<PAGE>
 

 
               The Distributor may from time to time pay additional cash bo-
            nuses or other incentives to selected participating brokers in
            connection with the sale or servicing of Class A, Class B and
            Class C shares of the Portfolios. On some occasions, such bonuses
            or incentives may be conditioned upon the sale of a specified min-
            imum dollar amount of the shares of a Portfolio and/or all of the
            Portfolios or other series of the Trust together, or a particular
            class of shares, during a specific period of time. The Distributor
            currently expects that such additional bonuses or incentives will
            not exceed .50% of the amount of any sale. In its capacity as ad-
            ministrator for the Portfolios, PIMCO Advisors may pay participat-
            ing brokers and other intermediaries for sub-transfer agency and
            other services.
               If in any year the Distributor's expenses incurred in connec-
            tion with the distribution of Class B and Class C shares and, for
            Class A, Class B and Class C shares, in connection with the ser-
            vicing of shareholders and the maintenance of shareholder ac-
            counts, exceed the distribution and/or servicing fees paid by the
            Trust, the Distributor would recover such excess only if the Dis-
            tribution and Servicing Plan with respect to such class of shares
            continues to be in effect in some later year when the distribution
            and/or servicing fees exceed the Distributor's expenses. The Trust
            is not obligated to repay any unreimbursed expenses that may exist
            at such time, if any, as the relevant Distribution and Servicing
            Plan terminates.
               From time to time, expenses of principal underwriters incurred
            in connection with the distribution of Class B and Class C shares
            of the Portfolios, and in connection with the servicing of Class
            A, Class B and Class C shareholders of the Portfolios and the
            maintenance of Class A, Class B and Class C shareholder accounts,
            may exceed the distribution and/or servicing fees collected by the
            Distributor.
 
            How Net Asset Value Is Determined
 
            The net asset values of Class A, Class B and Class C shares of
            each Portfolio of the Trust will be determined once on each day on
            which the Exchange is open (a "Business Day"), as of the close of
            regular trading (normally 4:00 p.m., Eastern time) on the Ex-
            change. Net asset value will not be determined on days on which
            the Exchange is closed.
               The market values of the shares of the Underlying Funds held by
            the Portfolios are determined once each Business Day in the same
            manner as the net asset values of the Portfolios' shares are de-
            termined as described below.
               Each Portfolio's liabilities are allocated among its classes.
            The total of such liabilities allocated to a class plus that
            class's distribution and/or servicing fees and any other expenses
            specially allocated to that class are then deducted from the
            class's proportionate interest in the Portfolio's assets, and the
            resulting amount for each class is divided by the number of shares
            of that class outstanding to produce the class's "net asset value"
            per share. Under certain circumstances, the per share net asset
            value of the Class B and Class C shares of the Portfolios that do
            not declare regular income dividends on a daily basis may be lower
            than the per share net asset value of the Class A shares as a re-
            sult of the daily expense accruals of the distribution fee appli-
            cable to the Class B and Class C shares. Generally, for Portfolios
            that pay income dividends, those dividends are expected to differ
            over time by approximately the amount of the expense accrual dif-
            ferential between a particular Portfolio's classes.
 
            Distributions
 
            Shares begin earning dividends on the day after the date that
            funds are received by the Trust for the purchase of Class A, Class
            B and Class C shares. Net investment income from interest and div-
            idends, if any, will be declared and paid to shareholders of rec-
            ord at least monthly by the 30/70 Portfolio, at least quarterly by
            the 60/40 Portfolio and at least annually by the 90/10 Portfolio.
            Any net capital gains from the sale of portfolio securities will
            be distributed no less frequently than once annually. Net short-
            term capital gains may be paid more frequently.
               All dividends and/or distributions will be paid in the form of
            additional shares of the class of shares of the Portfolio to which
            the dividends and/or distributions relate or, at the election of
            the shareholder, of another series of the Trust or PIMCO Funds:
            Pacific Investment Management Series as described below, at net
            asset value, unless the shareholder elects to receive cash (either
            paid to shareholders directly or credited to their account with
            their participat-



PIMCO Funds Asset Allocation Series
 
                                      38



<PAGE>
 

            ing broker). If a shareholder has elected to receive dividends
            and/or capital gain distributions in cash and the postal or other
            delivery service is unable to deliver checks to the shareholder's
            address of record, such shareholder's distributions will automati-
            cally be invested in PIMCO Money Market Fund until such share-
            holder is located. Dividends paid by each Portfolio with respect
            to each class of shares are calculated in the same manner and at
            the same time, but dividends on Class B and Class C shares are ex-
            pected to be lower than dividends on Class A shares as a result of
            the distribution fee applicable to Class B and Class C shares.
            There are no sales charges on reinvested dividends.
               
               Class A, Class B and Class C shareholders of the Portfolios may
            elect to invest dividends and/or distributions paid by any Portfo-
            lio in shares of the same class of any other series of the Trust
            or PIMCO Funds: Pacific Investment Management Series which offers
            such class of shares at net asset value. The shareholder must have
            an account existing in the PIMCO series selected for investment
            with the identical registered name and address and must elect this
            option on the account application, on a form provided for that
            purpose or by a telephone request to the Distributor at 1-800-426-
            0107. For further information on this option, contact your broker
            or call the Distributor at 1-800-426-0107.     
 
            Taxes
 
            Each Portfolio intends to qualify as a regulated investment com-
            pany annually and to elect to be treated as a regulated investment
            company under the Internal Revenue Code of 1986, as amended (the
            "Code"). As such, a Portfolio generally will not pay federal in-
            come tax on the income and gains it pays as dividends to its
            shareholders. In order to avoid a 4% federal excise tax, each
            Portfolio intends to distribute each year substantially all of its
            net income and gains.
               
               Shareholders subject to U.S. federal income tax will be subject
            to tax on dividends received from a Portfolio, regardless of
            whether received in cash or reinvested in additional shares. Dis-
            tributions received by tax-exempt shareholders will not be subject
            to federal income tax to the extent permitted under applicable tax
            law. All shareholders must treat dividends, other than capital
            gain dividends and dividends that represent a return of capital to
            shareholders, as ordinary income. In particular, distributions de-
            rived from short-term gains will be treated as ordinary income.
            Dividends designated by a Portfolio as capital gain dividends de-
            rived from the Portfolio's net capital gains (that is, the excess
            of its net long-term capital gains over its net short-term capital
            losses) are taxable to shareholders as long-term capital gain
            (generally subject to a 20% tax rate for shareholders who are in-
            dividuals) except as provided by an applicable tax exemption. Any
            distributions that are not from a Portfolio's net investment in-
            come or net capital gain may be characterized as a return of capi-
            tal to shareholders or, in some cases, as capital gain. Certain
            dividends declared in October, November or December of a calendar
            year are taxable to shareholders (who otherwise are subject to tax
            on dividends) as though received on December 31 of that year if
            paid to shareholders during January of the following calendar
            year. Each Portfolio will advise shareholders annually of the
            amount and nature of the dividends paid to them.     
               Taxable shareholders should note that the timing of their in-
            vestment or redemptions could have undesirable tax consequences.
            Dividends and distributions on a Portfolio's shares are generally
            subject to federal income tax as described herein to the extent
            they do not exceed the Portfolio's realized income and gains, even
            though such dividends and distributions may economically represent
            a return of a particular shareholder's investment. Such distribu-
            tions are likely to occur in respect of shares purchased at a time
            when the Portfolio's net asset value reflects gains that are ei-
            ther unrealized, or realized but not distributed. Such realized
            gains may be required to be distributed even when a Portfolio's
            net asset value also reflects unrealized losses.
               A Portfolio's use of a fund-of-funds structure could affect the
            amount, timing and character of distributions to shareholders. See
            "Taxation" in the Statement of Additional Information.
               The preceding discussion relates only to federal income tax;
            the consequences under other tax laws may differ. Shareholders
            should consult their tax advisers as to the possible application
            of foreign, state and local income tax laws
                                                                
                                                             Prospectus     
                                      39
<PAGE>
 

            to Trust dividends and capital gain distributions. For additional
            information relating to the tax aspects of investing in a Portfo-
            lio, see the Statement of Additional Information.
 
            Management of the Portfolios
 
            The business affairs of the Trust are managed under the direction
            of the Board of Trustees. Information about the Trustees and the
            Trust's executive officers may be found in the Statement of Addi-
            tional Information under the heading "Management of the Trust."
 
               
Investment  PIMCO Advisors serves as investment adviser to the Portfolios pur-
Adviser     suant to an investment advisory agreement with the Trust. PIMCO
            Advisors is a Delaware limited partnership organized in 1987.
            PIMCO Advisors provides investment management and advisory serv-
            ices to private accounts of institutional and individual clients
            and to mutual funds. Total assets under management by PIMCO Advi-
            sors and its subsidiary partnerships as of December 31, 1998 were
            approximately $244.2 billion.     
               
               The general partners of PIMCO Advisors are PIMCO Partners, G.P.
            and PIMCO Advisors Holdings L.P. ("PAH"). PIMCO Partners, G.P. is
            a general partnership between PIMCO Holding LLC, a Delaware lim-
            ited liability company and an indirect wholly-owned subsidiary of
            Pacific Life Insurance Company, and PIMCO Partners LLC, a Califor-
            nia limited liability company controlled by the current Managing
            Directors and two former Managing Directors of Pacific Investment
            Management. PIMCO Partners, G.P. is the sole general partner of
            PAH. PIMCO Advisors is governed by a Management Board, which exer-
            cises substantially all of the governance powers of the general
            partner and serves as the functional equivalent of a board of di-
            rectors. PIMCO Advisors' address is 800 Newport Center Drive, New-
            port Beach, California 92660. PIMCO Advisors is registered as an
            investment adviser with the Securities and Exchange Commission.
                
               PIMCO Advisors' Asset Allocation Committee is responsible for
            determining how the Portfolios' assets are allocated and reallo-
            cated from time to time among the Underlying Funds. Individuals
            who determine general investment advice and constitute the Asset
            Allocation Committee for PIMCO Advisors are William D. Cvengros,
            Timothy R. Clark, Robert S. Venable and David Young.
               William D. Cvengros is the Chief Executive Officer, President
            and a Member of the Management Board of PIMCO Advisors and a
            Trustee of the Trust. He was formerly President of the Trust and a
            Director and the Vice Chairman and Chief Investment Officer of Pa-
            cific Life Insurance Company. He received a B.A. in Economics from
            the University of Notre Dame and an M.B.A. from Northwestern Uni-
            versity and he is a Chartered Financial Analyst. Timothy R. Clark
            is a Vice President of PIMCO Advisors and a Senior Vice President
            of the Distributor. He previously served as President of Katonah
            Capital Management, Inc. Prior to that, he was with Zweig Advisors
            Inc. and its affiliates serving in various capacities, including
            portfolio manager for various open- and closed-end funds. He re-
            ceived a B.A. in Economics from Harvard University and an M.B.A.
            from New York University. Robert S. Venable is a Vice President of
            PIMCO Advisors. He previously served as a Vice President and port-
            folio manager at Pacific Investment Management. Mr. Venable has a
            B.S. from the University of California, Berkeley and an M.B.A.
            from the Wharton School of Business and he is a Chartered Finan-
            cial Analyst. David Young is a Vice President in Account Manage-
            ment at Pacific Investment Management. Previously, he was a Vice
            President--Client Relations and Marketing of a former division of
            PIMCO Advisors, a Director--Client Relations with Pacific Finan-
            cial Asset Management Company and a Vice President and portfolio
            manager with Analytic Investment Management, Inc. He received a
            B.A. in Economics and Political Science and an M.B.A. from the
            University of California, Irvine and he is a Chartered Financial
            Analyst.
               Under the investment advisory agreement, PIMCO Advisors, sub-
            ject to the supervision of the Board of Trustees, is responsible
            for providing advice and guidance with respect to the Portfolios
            and for managing, either directly or through others selected by
            the Adviser, the investment of the Portfolios. PIMCO Advisors also
            furnishes to the Board of Trustees periodic reports on the invest-
            ment performance of each Portfolio.

PIMCO Funds Asset Allocation Series 
                                      40
<PAGE>
 
 
Fund
Administrator
            PIMCO Advisors also serves as administrator (the "Administrator")
            for the Portfolios' Class A, Class B and Class C shares pursuant
            to an administration agreement with the Trust. The Administrator
            provides or procures administrative services for Class A, Class B
            and Class C shareholders of the Portfolios, which include clerical
            help and accounting, bookkeeping, internal audit services and cer-
            tain other services required by the Portfolios, and preparation of
            reports to the Portfolios' shareholders and regulatory filings.
            The Administrator has retained Pacific Investment Management to
            provide such services as sub-administrator. The Administrator
            and/or the sub-administrator may also retain other affiliates to
            provide certain of these services. In addition, the Administrator,
            at its own expense, arranges for the provision of legal, audit,
            custody, transfer agency (including sub-transfer agency and other
            administrative services) and other services necessary for the or-
            dinary operation of the Portfolios, and is responsible for the
            costs of registration of the Trust's shares and the printing of
            prospectuses and shareholder reports for current shareholders.
               
               The Portfolios (and not the Administrator) are responsible for
            the following expenses: (i) salaries and other compensation of any
            of the Trust's executive officers and employees who are not offi-
            cers, directors, stockholders, or employees of PIMCO Advisors, Pa-
            cific Investment Management, or their subsidiaries or affiliates;
            (ii) taxes and governmental fees; (iii) brokerage fees and commis-
            sions and other portfolio transaction expenses; (iv) the costs of
            borrowing money, including interest expenses; (v) fees and ex-
            penses of the Trustees who are not "interested persons" of the Ad-
            viser, any Sub-Adviser, or the Trust, and any counsel retained ex-
            clusively for their benefit; (vi) extraordinary expenses, includ-
            ing costs of litigation and indemnification expenses; (vii) ex-
            penses which are capitalized in accordance with generally accepted
            accounting principles; and (viii) any expenses allocated or allo-
            cable to a specific class of shares, which include distribution
            and/or service fees payable with respect to Class A, Class B and
            Class C shares, and may include certain other expenses as permit-
            ted by the Trust's Multiple Class Plan adopted pursuant to Rule
            18f-3 under the 1940 Act, subject to review and approval by the
            Trustees. The Portfolios also indirectly pay their proportionate
            share of the expenses of the Underlying Funds (including advisory
            and administrative fees) in which they invest. See "Underlying
            Fund Expenses" below.     
 
 
Advisory    The Portfolios do not pay any fees to PIMCO Advisors under the
Fees        Trust's investment advisory agreement in return for the advisory
            and asset allocation services provided by PIMCO Advisors. The
            Portfolios do, however, indirectly pay a proportionate share of
            the advisory fees paid to PIMCO Advisors and Pacific Investment
            Management by the Underlying Funds in which the Portfolios invest.
            See "Underlying Fund Expenses" below.
 
 
Administrative
Fees
               
            For providing or procuring administrative services to the Portfo-
            lios as described above, the Administrator receives monthly fees
            from each Portfolio at the annual rate of 0.40% based on the aver-
            age daily net assets attributable in the aggregate to the Portfo-
            lio's Class A, Class B and Class C shares up to and including $2.5
            billion, and .35% based on such net assets in excess of $2.5 bil-
            lion. The Portfolios also indirectly pay a proportionate share of
            the administrative fees charged by PIMCO Advisors and Pacific In-
            vestment Management to the Underlying Funds in which the Portfo-
            lios invest. See "Underlying Fund Expenses" below. The administra-
            tion and sub-administration agreements for the Portfolios may be
            terminated by the Trustees, or by PIMCO Advisors or Pacific In-
            vestment Management (as the case may be) on 60 days' written no-
            tice. Following their initial terms, the agreements will continue
            from year-to-year if approved by the Trustees.     
 
 
Underlying
Fund
Expenses    The expenses associated with investing in a "fund of funds," such
            as the Portfolios, are generally higher than those for mutual
            funds that do not invest primarily in other mutual funds. This is
            because shareholders in a "fund of funds" indirectly pay a portion
            of the fees and expenses charged at the underlying fund level.
               The Trust has structured the Portfolios to reduce expenses in-
            curred at the Underlying Fund level as follows: (a) the Portfolios
            do not pay any fees for asset allocation or advisory services un-
            der the Trust's investment advisory agreement; and (b) the Portfo-
            lios invest in Institutional Class shares of the Underlying Funds,
            which are not subject to any sales charges or 12b-1 fees.
 
                                                                 Prospectus  41
<PAGE>
 

                  
                  The table below sets forth annual advisory fee and total oper-
               ating expense information for Institutional Class shares of the
               Underlying Funds. Shareholders of each Portfolio indirectly bear
               a proportionate share of these expenses depending upon how the
               Port-folio's assets are allocated from time to time among the
               Under-lying Funds. See "Schedule of Fees."     
 
 
 
<TABLE>   
<CAPTION>
                                         Annual Underlying Fund Expenses
                                         (Based on the average daily net assets
                                         attributable to a Fund's Institutional
                                         Class shares):
                                         Advisory Admini-       Total Fund
              Underlying Fund            Fees     strative Fees Operating Expenses
              -----------------------------------------------------------------
              <S>                        <C>      <C>           <C>
              PIMCO Growth               0.50%    0.25%         0.75%
              -----------------------------------------------------------------
              PIMCO Target               0.55     0.25          0.80
              -----------------------------------------------------------------
              PIMCO Opportunity          0.65     0.25          0.90
              -----------------------------------------------------------------
              PIMCO Capital
               Appreciation              0.45     0.25          0.70
              -----------------------------------------------------------------
              PIMCO Mid-Cap Growth       0.45     0.25          0.70
              -----------------------------------------------------------------
              PIMCO Small-Cap Growth     1.00     0.25          1.25
              -----------------------------------------------------------------
              PIMCO Micro-Cap Growth     1.25     0.25          1.50
              -----------------------------------------------------------------
              PIMCO Equity Income        0.45     0.25          0.70
              -----------------------------------------------------------------
              PIMCO Renaissance          0.60     0.25          0.85
              -----------------------------------------------------------------
              PIMCO Value                0.45     0.25          0.70
              -----------------------------------------------------------------
              PIMCO Value 25             0.50     0.25          0.75
              -----------------------------------------------------------------
              PIMCO Small-Cap Value      0.60     0.25          0.85
              -----------------------------------------------------------------
              PIMCO Tax-Efficient
               Equity                    0.45     0.25          0.70
              -----------------------------------------------------------------
              PIMCO Enhanced Equity      0.45     0.25          0.70
              -----------------------------------------------------------------
              PIMCO StocksPLUS           0.40     0.25          0.65
              -----------------------------------------------------------------
              PIMCO International        0.55     0.50          1.05
              -----------------------------------------------------------------
              PIMCO International
               Growth                    0.85     0.50          1.35
              -----------------------------------------------------------------
              PIMCO Structured Emerging
               Markets                   0.45     0.50          0.95
              -----------------------------------------------------------------
              PIMCO Tax-Efficient
               Structured Emerging
               Markets                   0.45     0.50          0.95
              -----------------------------------------------------------------
              PIMCO Innovation           0.65     0.25          0.90
              -----------------------------------------------------------------
              PIMCO Money Market         0.15     0.20          0.35
              -----------------------------------------------------------------
              PIMCO Short-Term           0.25     0.20          0.45
              -----------------------------------------------------------------
              PIMCO Low Duration         0.25     0.18          0.43
              -----------------------------------------------------------------
              PIMCO Moderate Duration    0.25     0.20          0.45
              -----------------------------------------------------------------
              PIMCO Total Return         0.25     0.18          0.43
              -----------------------------------------------------------------
              PIMCO Total Return II      0.25     0.25          0.50
              -----------------------------------------------------------------
              PIMCO Long-Term U.S.
               Government                0.25     0.25          0.50
              -----------------------------------------------------------------
              PIMCO Global Bond          0.25     0.30          0.55
              -----------------------------------------------------------------
              PIMCO Foreign Bond         0.25     0.25          0.50
              -----------------------------------------------------------------
              PIMCO Emerging Markets
               Bond                      0.45     0.40          0.85
              -----------------------------------------------------------------
              PIMCO High Yield           0.25     0.25          0.50
              -----------------------------------------------------------------
              PIMCO Real Return Bond     0.25     0.25          0.50
</TABLE>    
 
               Description of the Trust
 
 
Capitalization
               The Trust was organized as a Massachusetts business trust on Au-
               gust 24, 1990, and currently consists of twenty-eight portfolios
               that are operational, three of which are described in this Pro-
               spectus. Other portfolios may be offered by means of a separate
               prospectus. The Board of Trustees may establish additional
               portfolios in the future. The capitalization of the Trust
               consists of an unlimited number of shares of beneficial interest.
               When issued, shares of the Trust are fully paid, non-assessable
               and freely transferable.

PIMCO Funds Asset Allocation Series
 
                                      42
<PAGE>
 
                                                             
               Under Massachusetts law, shareholders could, under certain cir-
            cumstances, be held liable for the obligations of the Trust. How-
            ever, the Trust's Second Amended and Restated Agreement and Decla-
            ration of Trust (the "Declaration of Trust") disclaims shareholder
            liability for acts or obligations of the Trust and requires that
            notice of such
            disclaimer be given in each agreement, obligation or instrument
            entered into or executed by the Trust or the Trustees. The Decla-
            ration of Trust also provides for indemnification out of a Portfo-
            lio's property for all loss and expense of any shareholder of that
            Portfolio held liable on account of being or having been a share-
            holder. Thus, the risk of a shareholder incurring financial loss
            on account of shareholder liability is limited to circumstances in
            which such disclaimer is inoperative or the Portfolio of which he
            or she is or was a shareholder is unable to meet its obligations,
            and thus should be considered remote.
 
 
Multiple    Class A, Class B and Class C shares of each Portfolio represent
Classes of  interests in the assets of that Portfolio, and each class has
Shares      identical dividend, liquidation and other rights and the same
            terms and conditions, except that expenses related to the distri-
            bution and shareholder servicing of Class A, Class B and Class C
            shares are borne solely by such class and each class may, at the
            Trustees' discretion, also pay a different share of other ex-
            penses, not including advisory or custodial fees or other expenses
            related to the management of the Trust's assets, if these expenses
            are actually incurred in a different amount by that class, or if
            the class receives services of a different kind or to a different
            degree than the other classes. All other expenses are allocated to
            each class on the basis of the net asset value of that class in
            relation to the net asset value of the particular Portfolio.
               
               The Portfolios also offer Institutional Class and Administra-
            tive Class shares through a separate prospectus. Institutional
            Class and Administrative Class shares are offered to pension and
            profit sharing plans, employee benefit trusts, endowments, founda-
            tions, corporations and other high net worth individuals. Institu-
            tional Class and Administrative Class shares are sold without a
            sales charge and have different expenses than Class A, Class B or
            Class C shares. As a result of lower sales charges and/or operat-
            ing expenses, Institutional Class and Administrative Class shares
            are generally expected to achieve higher investment returns than
            Class A, Class B or Class C shares. To obtain more information
            about Institutional Class and Administrative Class shares, please
            call the Trust at 1-800-927-4648.     
 
 
Voting      Each class of shares of each Portfolio has identical voting
            rights, except that each class of shares has exclusive voting
            rights on any matter submitted to shareholders that relates solely
            to that class, and has separate voting rights on any matter sub-
            mitted to shareholders in which the interests of one class differ
            from the interests of any other class. Each class of shares has
            exclusive voting rights with respect to matters pertaining to any
            Distribution and Servicing Plan or agreement applicable only to
            that class. These shares are entitled to vote at meetings of
            shareholders. Matters submitted to shareholder vote must be ap-
            proved by each Portfolio separately except (i) when required by
            the 1940 Act shares shall be voted together and (ii) when the
            Trustees have determined that the matter does not affect all Port-
            folios, then only shareholders of the Portfolio or Portfolios af-
            fected shall be entitled to vote on the matter. All classes of
            shares of a Portfolio will vote together, except with respect to a
            Distribution and Servicing Plan or agreement applicable to a class
            of shares or when a class vote is required as specified above or
            otherwise by the 1940 Act. Shares are freely transferable, are en-
            titled to dividends as declared by the Trustees and, in liquida-
            tion of the Trust, are entitled to receive the net assets of their
            Portfolio, but not of the other Portfolios or other series of the
            Trust. The Trust does not generally hold annual meetings of share-
            holders and will do so only when required by law. Shareholders may
            remove Trustees from office by votes cast in person or by proxy at
            a meeting of shareholders or by written consent. Such a meeting
            will be called at the written request of the holders of 10% of the
            Trust's outstanding shares.

               Shares entitle their holders to one vote per share (with pro-
            portionate voting for fractional shares). As of March 10, 1999,
            the Trust believes that there were no shareholders of record of
            25% or more of the outstanding voting securities of any Portfolio.
            As used in this Prospectus, the phrase "vote of a majority of the
            outstanding shares" of a Portfolio (or the Trust) means the vote
            of the lesser of: (1) 67% of the shares of the Portfolio (or the
            Trust) present at 
 
                                                               Prospectus   43
<PAGE>
 
            a meeting, if the holders of more than 50% of the outstanding
            shares are present in person or by proxy; or (2) more than 50% of
            the outstanding shares of the Portfolio (or the Trust).
 
            Mailings to Shareholders
 
            To reduce the volume of mail shareholders receive, it is antici-
            pated that only one copy of most Trust reports, such as the
            Trust's annual reports, will be mailed to a shareholder's house-
            hold (same surname, same address). A shareholder may call 1-800-
            426-0107 if additional shareholder reports are desired.
 
44  PIMCO Funds Asset Allocation Series
<PAGE>
 
PIMCO Funds Asset Allocation Series
Actively managed portfolios of select PIMCO Funds





Investment Adviser and Administrator 
PIMCO Advisors L.P.
800 Newport Center Drive 
Newport Beach, CA 92660

Distributor     
PIMCO Funds Distributors LLC
2187 Atlantic Street
Stamford, CT 06902

Custodian
Investors Fiduciary Trust Company
801 Pennsylvania
Kansas City, MO 64105

Shareholder Servicing Agent and Transfer Agent
First Data Investor Services Group, Inc.
P.O. Box 9688
Providence, RI 02940

Independent Accountants
PricewaterhouseCoopers LLP
1055 Broadway
Kansas City, MO 64105

Legal Counsel
Ropes & Gray
One International Place
Boston, MA 02110

For further information about PIMCO Funds Asset Allocation Series, 
call 1-800-426-0107 or visit our Web site at www.pimcofunds.com.


                                                                       P I M C O
                                                                      ----------
                                                                           FUNDS
                                                                           -----
<PAGE>
 
Multi-Manager 
Series
    
April 1, 1999

Share Classes      

(Ins) Institutional

(Adm) Administrative


PIMCO Funds Asset Allocation Series

Prospectus

Actively managed portfolios of select 

PIMCO Funds Asset Allocation Series consists of three actively managed mutual
funds that invest in a diversified portfolio of PIMCO Funds. In addition to
broad diversification, each Portfolio provides access to the extensive asset
allocation and investment management capabilities of PIMCO Advisors L.P. and its
affiliates.

90/10 Portfolio 

Seeks long-term capital appreciation. The Portfolio normally invests
approximately 90% of its assets in PIMCO Stock Funds and 10% in PIMCO Bond
Funds.

60/40 Portfolio 

Seeks long-term capital appreciation and current income. The Portfolio normally
invests approximately 60% of its assets in PIMCO Stock Funds and 40% in PIMCO
Bond Funds.

30/70 Portfolio 

Seeks current income, with long-term capital appreciation as a secondary
objective. The Portfolio normally invests approximately 30% of its assets in
PIMCO Stock Funds and 70% in PIMCO Bond Funds.


                                                                       P I M C O
                                                                       ---------
                                                                           FUNDS
                                                                           -----
<PAGE>
 
          PIMCO Funds: Multi-Manager Series
          Prospectus
             
          April 1, 1999     
 
          PIMCO Funds Asset Allocation Series
 
90/10 Portfolio
          PIMCO Funds: Multi-Manager Series (the "Trust"), formerly PIMCO
          Funds: Equity Advisors Series, is an open-end series management
          investment company ("mutual fund"). This Prospectus describes three
          diversified investment portfolios (each a "Portfolio") of the Trust.
          Each Portfolio has its own investment objective and policies. The
          Portfolios are professionally-managed series of the Trust designed
          to take advantage of the benefits of asset allocation. Each
          Portfolio seeks to achieve its particular investment objective by
          investing within specified equity and fixed income ranges among a
          number of other mutual funds in the PIMCO Funds family ("Underlying
          Funds" or "Funds").
60/40 Portfolio
30/70 Portfolio
 
          PIMCO Advisors L.P. ("PIMCO Advisors" or the "Adviser") serves as
          investment adviser to the Portfolios and determines how the assets
          of each Portfolio are allocated among the Underlying Funds. PIMCO
          Advisors and its affiliates also provide advisory services to the
          Underlying Funds. See "Management of the Portfolios."
 
          This Prospectus describes two classes of shares offered by each
          Portfolio: the "Institutional Class" and the "Administrative Class."
          Through a separate prospectus, each Portfolio also offers three
          additional classes of shares, Class A, Class B and Class C shares.
          See "Other Information--Multiple Classes of Shares."
 
          This Prospectus sets forth concisely the information a prospective
          investor should know before investing in the Portfolios. It should
          be read and retained for ready reference to information about the
          Portfolios. Information about the investment objective of each
          Portfolio, and of the investment policies and restrictions
          applicable to each Portfolio, are set forth in this Prospectus.
          There can be no assurance that the investment objective of any
          Portfolio will be achieved. Because the market value of each
          Portfolio's investments will change, the investment returns and net
          asset value per share of each Portfolio will vary.
             
          A Statement of Additional Information, dated April 1, 1999, and as
          further amended or supplemented from time to time, is available
          without charge as specified below. In addition, a Trust Prospectus
          dated April 1, 1999 and a Prospectus of PIMCO Funds: Pacific
          Investment Management Series dated April 1, 1999, each as amended or
          supplemented from time to time (together, the "Underlying Fund
          Prospectuses"), relating to Institutional Class shares of the
          Underlying Funds, are available without charge. The Statement of
          Additional Information and the Underlying Fund Prospectuses, which
          contain more detailed information about the Trust, the Portfolios
          and/or the Underlying Funds, have each been filed with the
          Securities and Exchange Commission and are incorporated by reference
          in this Prospectus. The Securities and Exchange Commission maintains
          an Internet World Wide Web site (at www.sec.gov) which contains the
          Statement of Additional Information and materials that are
          incorporated by reference into this Prospectus and the Statement of
          Additional Information, the Underlying Fund Prospectuses, and other
          information about the Trust, the Portfolios and the Underlying
          Funds. The Statement of Additional Information and the Underlying
          Fund Prospectuses are available without charge and may be obtained
          by writing or calling:     
 
                             PIMCO Funds
                             840 Newport Center Drive, Suite 300
                             Newport Beach, CA 92660
                             Telephone: 1-800-927-4648
                                    1-800-987-4626 (PIMCO Infolink Audio
                                             Response Network).
 
          These securities have not been approved or disapproved by the
          Securities and Exchange Commission or any state securities
          commission, nor has the Securities and Exchange Commission or any
          state securities commission passed upon the accuracy or adequacy of
          this Prospectus. Any representation to the contrary is a criminal
          offense.
 
          Shares of the Portfolios are not deposits or obligations of, or
          guaranteed or endorsed by, any financial institution, and the shares
          are not federally insured by the Federal Deposit Insurance
          Corporation, the Federal Reserve Board, or any other agency, and
          involve risk, including the possible loss of principal.
 PIMCO Funds: Multi-Manager Series
2
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>   
<CAPTION>
                                                                            Page
                                                                            ----
   <S>                                                                      <C>
   Prospectus Summary......................................................   4
   Expense Information.....................................................   7
   Investment Objectives and Policies......................................   9
   Underlying Funds........................................................  14
   Management of the Portfolios............................................  21
   Purchase of Shares......................................................  25
   Redemption of Shares....................................................  28
   Net Asset Value.........................................................  30
   Dividends, Distributions and Taxes......................................  30
   Other Information.......................................................  31
</TABLE>    
                                                                    Prospectus
                                                                               3
<PAGE>
 
                               PROSPECTUS SUMMARY
 
  PIMCO Funds: Multi-Manager Series (the "Trust") is an open-end series
management investment company organized as a Massachusetts business trust on
August 24, 1990. This Prospectus describes three separate diversified
investment portfolios (the "Portfolios") offered by the Trust, PIMCO Funds
Asset Allocation Series--90/10 Portfolio (the "90/10 Portfolio"), PIMCO Funds
Asset Allocation Series--60/40 Portfolio (the "60/40 Portfolio") and PIMCO
Funds Asset Allocation Series--30/70 Portfolio (the "30/70 Portfolio").
 
  The Portfolios are intended for investors who prefer to have their asset
allocation decisions made by professional money managers. Each Portfolio has a
distinct investment objective which it seeks to achieve by investing within
specified equity and fixed income ranges among certain series ("Underlying
Funds" or "Funds") of the Trust and PIMCO Funds: Pacific Investment Management
Series. PIMCO Advisors serves as investment adviser for each Fund of the Trust
and its affiliate, Pacific Investment Management Company ("Pacific Investment
Management"), serves as investment adviser for each Fund of PIMCO Funds:
Pacific Investment Management Series. Some of the Underlying Funds invest
primarily in equity securities ("Underlying Stock Funds"); other Funds invest
primarily in fixed income securities, including money market instruments
("Underlying Bond Funds"). The Portfolios are named in accordance with their
equity/fixed income allocation targets. For instance, the 90/10 Portfolio will
normally invest approximately 90% of its assets in Underlying Stock Funds and
10% of its assets in Underlying Bond Funds. The following summarizes certain
key information relating to the Portfolios and is qualified in its entirety by
the more detailed information contained elsewhere in this Prospectus.
 
                               Portfolio Profiles
 
<TABLE>
<CAPTION>
 PIMCO Funds
 Asset Allocation Series Investment Objective                              Allocation Strategy
- ---------------------------------------------------------------------------------------------------
 <C>                     <C>                                               <S>
 90/10 Portfolio         Long-term capital appreciation                    Under normal conditions,
                                                                           approximately 90% of the
                                                                           Portfolio's assets will
                                                                           be allocated among
                                                                           Underlying Stock Funds
                                                                           and 10% among Underlying
                                                                           Bond Funds.
- ---------------------------------------------------------------------------------------------------
 60/40 Portfolio         Long-term capital appreciation and current income Under normal conditions,
                                                                           approximately 60% of the
                                                                           Portfolio's assets will
                                                                           be allocated among
                                                                           Underlying Stock Funds
                                                                           and 40% among Underlying
                                                                           Bond Funds.
- ---------------------------------------------------------------------------------------------------
 30/70 Portfolio         Current income, with long-term                    Under normal conditions,
                         capital appreciation as a secondary objective     approximately 30% of the
                                                                           Portfolio's assets will
                                                                           be allocated among
                                                                           Underlying Stock Funds
                                                                           and 70% among Underlying
                                                                           Bond Funds.
</TABLE>
 
                      Investment Risks and Considerations
 
  The Underlying Funds have different investment objectives and policies and
different degrees of potential investment risk and reward. Based on the
allocation strategies listed above, an investor should choose among the
Portfolios based on personal objectives, investment time horizon, tolerance for
risk and personal financial circumstances. For example, because the 90/10
Portfolio will normally invest approximately 90% of its assets in Underlying
Stock Funds, this Portfolio might be suitable for an investor with a relatively
long time horizon who seeks long-term capital appreciation potential and has a
fairly high tolerance for risk and volatility. An investor with a shorter time
horizon who seeks a balance of income and long-term capital appreciation and
has less tolerance for risk and volatility might choose the 60/40 Portfolio,
which invests in a fairly balanced portfolio of Underlying Stock and Bond
Funds. An investor who seeks a higher level of current income combined with
some potential for long-term capital appreciation and has a lower tolerance for
risk and volatility might choose the 30/70 Portfolio, which will normally
invest approximately 70% of its assets in Underlying Bond Funds. While each
Portfolio provides a relatively high level of diversification in comparison
 PIMCO Funds: Multi-Manager Series
4
<PAGE>
 
                         PROSPECTUS SUMMARY (continued)
to most mutual funds, a single Portfolio may not be suitable as a complete
investment program. For a more complete description of the investment
objectives and policies of the Portfolios, please see "Investment Objectives
and Policies."
 
  Because each Portfolio will invest all of its assets in the Underlying Funds,
each Portfolio's investment performance is directly related to the investment
performance of the Underlying Funds in which it invests. The ability of a
Portfolio to realize its investment objective will depend upon the extent to
which the Underlying Funds realize their objectives. The value of the
Underlying Funds' investments, and the net asset values of the shares of both
the Underlying Funds and the Portfolios, will fluctuate in response to changes
in market and economic conditions, as well as the financial condition and
prospects of issuers in which the Underlying Funds invest.
 
  The possible use of certain investment techniques by an Underlying Fund,
including various derivative instruments such as futures contracts, options and
swap agreements, will subject the Fund to greater risk than Funds that do not
employ such techniques. In addition, investments by certain Underlying Funds in
small market capitalization companies, foreign issuers (including emerging
market issuers) and foreign currencies, illiquid securities and other
instruments will expose those Funds to a higher degree of risk and price
volatility. Some Underlying Funds may also invest in fixed income securities
rated below investment grade (commonly referred to as "high yield" securities
or "junk" bonds), which are considered to be speculative by traditional
investment standards. Each Portfolio may be subject to these and other risks
associated with investments in the Underlying Funds depending upon the
Portfolio's asset allocation strategy. For a description of the various risks
associated with the Portfolios and the Underlying Funds, see "Investment
Objectives and Policies" and "Underlying Funds" in this Prospectus, "Investment
Objectives and Policies" in the Statement of Additional Information and
"Characteristics and Risks of Securities and Investment Techniques" in the
Underlying Fund Prospectuses, which are incorporated herein by reference and
are available free of charge by telephoning the Trust at 1-800-927-4648.
 
  Potential investors in the Portfolios should realize that they may invest
directly in the Underlying Funds and make their own asset allocation decisions.
By investing in a Portfolio, an investor will incur not only a proportionate
share of the expenses of the Portfolio but also a portion of the expenses of
the Underlying Funds in which the Portfolio invests (including investment
advisory and administrative fees charged at the Underlying Fund level).  See
"Expense Information" and "Management of the Portfolios--Underlying Fund
Expenses."
 
                               Purchase of Shares
 
  This Prospectus describes two classes of shares of each Portfolio: the
"Institutional Class" and the "Administrative Class." Shares of the
Institutional Class are offered primarily for direct investment by
institutional investors (Institutional Class shares may also be offered through
certain financial intermediaries that charge their customers transaction or
other fees with respect to the customers' investments in the Portfolios).
Shares of the Administrative Class are offered primarily through employee
benefit plan alliances, broker-dealers and other intermediaries. Each Portfolio
pays service and/or distribution fees to such entities for services they
provide to such Portfolio's shareholders of that class.
 
  Shares of the Institutional Class and Administrative Class of the Portfolios
are offered at the relevant next determined net asset value with no sales
charge or other fee. The minimum initial investment for shares of either class
is $5 million, subject to certain exceptions described under "Purchase of
Shares." Shares of either class may also be offered to clients of the Adviser
and its affiliates.
                                                                Prospectus
                                                                               5
<PAGE>
 
                         PROSPECTUS SUMMARY (continued)
 
                           Redemptions and Exchanges
 
  Institutional Class and Administrative Class shares of each Portfolio may be
redeemed without cost at the relevant net asset value per share of the class of
that Portfolio next determined after receipt of the redemption request. The
redemption price may be more or less than the purchase price.
 
  Institutional Class and Administrative Class shares of any Portfolio may be
exchanged without cost on the basis of relative net asset values for shares of
the same class of any other Portfolio or other series of the Trust offered
generally to the public, or for shares of the same class of a series of PIMCO
Funds: Pacific Investment Management Series. See "Redemption of Shares."
 
 PIMCO Funds: Multi-Manager Series
6
<PAGE>
 
                              EXPENSE INFORMATION
 
  Expenses are one of several factors to consider when investing in
Institutional Class or Administrative Class shares of the Portfolios. The
following tables and Examples summarize the expenses of each Portfolio that are
borne by its Institutional Class and Administrative Class shareholders based on
estimated expenses for the Portfolio's current fiscal year.
   
  You should bear in mind that shareholders of each Portfolio indirectly bear
the expenses of the Underlying Funds in which the Portfolio invests. The
Portfolios will invest only in Institutional Class shares of the Underlying
Funds and will not pay any sales charges or 12b-1 fees in connection with their
investments in the Underlying Funds. The Portfolios will, however, indirectly
bear their pro rata share of the fees and expenses (including advisory and
administrative fees) incurred by the Underlying Funds that are borne by all
Institutional Class shareholders. Because the Underlying Funds have varied fee
and expense levels and the Portfolios will own different proportions of the
Underlying Funds at different times, the actual fees and expenses indirectly
incurred by the Portfolios will vary.     
 
Shareholder Transaction Expenses (Institutional Class and Administrative
Class):
 
<TABLE>
<S>                                                                         <C>
  Sales Load Imposed on Purchases.......................................... None
  Sales Load Imposed on Reinvested Dividends............................... None
  Redemption Fee........................................................... None
  Exchange Fee............................................................. None
  Fund Reimbursement Fee Imposed on Purchases, Redemptions and Exchanges... None
</TABLE>
 
Annual Portfolio Operating Expenses (as a percentage of average daily net
assets):
 
<TABLE>   
<CAPTION>
                                                           Underlying
                                   Advisory Administrative    Fund     Total
   Institutional Class Shares        Fee         Fee*      Expenses** Expenses
   --------------------------      -------- -------------- ---------- --------
   <S>                             <C>      <C>            <C>        <C>
   90/10 Portfolio................   None        0.10%        0.79%     0.89%
   60/40 Portfolio................   None        0.10         0.67      0.77
   30/70 Portfolio................   None        0.10         0.55      0.65
</TABLE>    
 
<TABLE>   
<CAPTION>
                                                    Service/ Underlying
   Administrative Class     Advisory Administrative  12b-1      Fund     Total
   Shares                     Fee         Fee*        Fee    Expenses** Expenses
   --------------------     -------- -------------- -------- ---------- --------
   <S>                      <C>      <C>            <C>      <C>        <C>
   90/10 Portfolio.........   None        0.10%       0.25%     0.79%     1.14%
   60/40 Portfolio.........   None        0.10        0.25      0.67      1.02
   30/70 Portfolio.........   None        0.10        0.25      0.55      0.90
</TABLE>    
     
   * The Administrative Fee for each Portfolio reflects a fee waiver
     currently in effect. In the absence of the waiver, the Administrative
     Fee rate for each Portfolio would be 0.15% per annum. See "Management of
     the Portfolios--Administrative Fees."     
     
  ** Based on estimated expenses for the current fiscal year. Underlying Fund
     Expenses for each Portfolio are estimated based upon the initial
     allocation of each Portfolio's assets among the Underlying Funds and
     upon the total annual operating expenses of each Underlying Fund. For a
     listing of the expenses associated with each Underlying Fund, please see
     "Management of the Portfolios--Underlying Fund Expenses." Total
     Portfolio Operating Expenses and the Examples set forth on the next page
     are based on estimates of the Underlying Fund Expenses each Portfolio
     will incur. Actual Underlying Fund Expenses for each Portfolio are
     expected to vary with changes in the allocation of the Portfolio's
     assets, and may be higher or lower than those shown above.     
 
  For a more detailed discussion of the Portfolios' fees and expenses, see
"Fund Administrator," "Advisory Fees," "Administrative Fees," "Underlying Fund
Expenses" and "Service and Distribution Fees" under the caption "Management of
the Portfolios."
                                                                Prospectus
                                                                               7
<PAGE>
 
                        EXPENSE INFORMATION (continued)
 
Example of Portfolio Expenses:
 
  An investor would pay the following expenses on a $1,000 investment assuming
(1) a hypothetical 5% annual return and (2) redemption at the end of each time
period:
 
<TABLE>   
<CAPTION>
   Institutional Class Shares                                     1 year 3 years
   --------------------------                                     ------ -------
   <S>                                                            <C>    <C>
   90/10 Portfolio...............................................  $ 9     $28
   60/40 Portfolio...............................................    8      25
   30/70 Portfolio...............................................    7      21
<CAPTION>
   Administrative Class Shares                                    1 year 3 years
   ---------------------------                                    ------ -------
   <S>                                                            <C>    <C>
   90/10 Portfolio...............................................  $12     $36
   60/40 Portfolio...............................................   10      32
   30/70 Portfolio...............................................    9      29
</TABLE>    
 
  The above tables are provided to assist investors in understanding the
various expenses which may be borne directly or indirectly in connection with
an investment in the Portfolios. These examples should not be considered a
representation of past or future expenses or performance. Actual expenses may
be higher or lower than those shown.
 PIMCO Funds: Multi-Manager Series
8
<PAGE>
 
                      INVESTMENT OBJECTIVES AND POLICIES
       
  The investment objective and general investment policies of each Portfolio
are described below. There can be no assurance that the investment objective
of any Portfolio will be achieved. Because the market value of each
Portfolio's investments will change, the net asset value per share of each
Portfolio will also vary.
 
  The Portfolios are intended for investors who prefer to have their asset
allocation decisions made by professional money managers. Each Portfolio seeks
to achieve its investment objective by investing within specified equity and
fixed income ranges among the Underlying Funds. Each Underlying Fund is a
series of the Trust or PIMCO Funds: Pacific Investment Management Series and
is managed by PIMCO Advisors and/or its affiliates. The Portfolios have
different investment objectives and policies and degrees of potential
investment risk and reward depending upon their allocation strategies. An
investor should choose a Portfolio based on personal objectives, investment
time horizon, tolerance for risk and personal financial circumstances.
 
Portfolio Descriptions
 
  90/10 Portfolio seeks long-term capital appreciation. Under normal
conditions, approximately 90% of the Portfolio's assets will be allocated
among Underlying Stock Funds and 10% among Underlying Bond Funds.
 
  60/40 Portfolio seeks long-term capital appreciation and current income.
Under normal conditions, approximately 60% of the Portfolio's assets will be
allocated among Underlying Stock Funds and 40% among Underlying Bond Funds.
 
  30/70 Portfolio seeks current income. Long-term capital appreciation is a
secondary objective. Under normal conditions, approximately 30% of the
Portfolio's assets will be allocated among Underlying Stock Funds and 70%
among Underlying Bond Funds.
 
  Unless otherwise noted, each Portfolio's investment objective and its
restrictions and policies relating to the investment of its assets are non-
fundamental and may be changed without shareholder approval.
 
  PIMCO Advisors serves as the investment adviser to the Portfolios and
determines how each Portfolio's assets are allocated among the Underlying
Funds. Each Portfolio invests in particular Underlying Funds (which may differ
from time to time) based on various criteria observed by PIMCO Advisors. Among
other things, PIMCO Advisors analyses the various investment objectives,
policies and strategies of the Underlying Funds to determine which Funds, in
combination with others, are appropriate in light of a Portfolio's investment
objective. PIMCO Advisors then makes allocation decisions among these
Underlying Funds in an attempt to achieve the Portfolio's objective. The table
on the next page illustrates the estimated equity and fixed income allocation
targets and typical ranges for each Portfolio under normal market conditions.
 
                                                                    Prospectus
                                                                              9
<PAGE>
 
Equity and Fixed Income Ranges
(as a percentage of each Portfolio's average net assets)
 
<TABLE>
<CAPTION>
                                                    Typical
PIMCO Funds                              Target     Allocation
Asset Allocation Series                  Allocation Range*
- --------------------------------------------------------------
<S>                                      <C>        <C>
90/10 Portfolio
 Equity                                  90%        80% - 100%
 Fixed Income (including money market**) 10%         0% -  20%
- --------------------------------------------------------------
60/40 Portfolio
 Equity                                  60%        50% -  70%
 Fixed Income (including money market**) 40%        30% -  50%
- --------------------------------------------------------------
30/70 Portfolio
 Equity                                  30%        25% -  35%
 Fixed Income (including money market**) 70%        65% -  75%
</TABLE>
 
 * Each Portfolio may temporarily deviate from its asset allocation range for
   defensive purposes.
** Each Portfolio may hold a portion of its assets in PIMCO Money Market Fund,
   in part, so that it can readily sell the securities and have cash available
   to pay Portfolio expenses without incurring capital gains.
 
  Each Portfolio is authorized to invest in any or all of the Underlying
Funds. However, it is expected that a Portfolio will invest in only some of
the Underlying Funds at any particular time. A Portfolio's investment in a
particular Underlying Fund may and in some cases is expected to exceed 25% of
its total assets. To the extent that a Portfolio invests a significant portion
of its assets in an Underlying Fund, it will be particularly sensitive to the
risks associated with that Fund. Please see "Underlying Funds" and "Principal
Risks of the Underlying Funds" below for a description of the Underlying Funds
and their attendant risks. The particular Underlying Funds in which each
Portfolio may invest, the equity and fixed income allocation targets and
ranges specified above, and the percentage of each Portfolio's assets invested
from time to time in any Underlying Fund or combination of Funds may be
changed from time to time without the approval of the Portfolio's
shareholders.
 
  Each Portfolio's net asset value will fluctuate in response to changes in
the net asset values of the Underlying Funds in which it invests. Each
Portfolio will invest all of its assets in Underlying Funds, and may invest up
to 100% of its assets in PIMCO Money Market Fund (and thereby deviate from its
asset allocation range) for temporary defensive purposes. A Portfolio may also
borrow money for temporary or emergency purposes.
 
  Each Portfolio is also subject to certain investment restrictions that are
described under "Investment Restrictions" in the Statement of Additional
Information.
 
Overview of Asset Allocation
 
  PIMCO Advisors' Asset Allocation Committee determines how the Portfolios'
assets are allocated and reallocated from time to time among the Underlying
Funds. The individuals who constitute the Asset Allocation Committee and are
primarily responsible for making asset allocation and other investment
decisions for the Portfolios are William D. Cvengros, Timothy R. Clark, Robert
S. Venable and David Young. Please see "Management of the Portfolios" for a
description of PIMCO Advisors and the individuals on the Asset Allocation
Committee.
   
  PIMCO Advisors' approach to asset allocation encompasses both quantitative
and qualitative processes designed to allocate the Portfolios' assets among
multiple Underlying Funds in order to achieve broadly diversified Portfolios.
The Asset Allocation Committee meets regularly to analyze various economic and
market data. The Committee also collects and synthesizes multiple proprietary
models maintained by the Sub-Advisers     
 
10
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
of the Underlying Funds. Please see "Underlying Funds--Sub-Advisers" for
information about the Sub-Advisers. These models are quantitatively compiled
by the Committee to provide a framework for developing PIMCO Advisors'
allocation strategies with respect to the major asset classes and sub-classes
held by the Underlying Funds.     
 
  The resulting framework assists the Asset Allocation Committee in the
following ways: (1) it identifies the desired tactical allocation ranges for
the Portfolios around long-term strategic broad asset class and sub-class
targets, (2) it identifies individual Funds among the Underlying Funds that
are expected to provide consistent, quality performance in the various asset
classes and sub-classes identified for the Portfolios and (3) it is used by
the Committee in its on-going evaluation of the equity and fixed income
markets in an attempt to identify and implement value-added tactical shifts
for the Portfolios. These tactical shifts and resulting reallocations of
Portfolio assets are not expected to be large or frequent in nature, and
should result in modest levels of portfolio turnover for the Portfolios. See
"Portfolio Turnover."
 
Equity Portion of the Portfolios
 
  The equity portion of each Portfolio will be allocated among a number of
Underlying Stock Funds which provide a broad range of equity-based investment
objectives and strategies. By allocating assets among these Funds, the equity
portions of the Portfolios can be diversified in multiple ways, including the
following:
 
  By Region
  . U.S. Equities
  . International Developed Markets Equities
  . International Emerging Markets Equities
 
  By Investment Style
  . Blend (Broad Market)
  . Value
  . Growth
 
  By Size
 
  . Large-Cap
  . Mid-Cap
  . Small-Cap
   
  For a description of the Underlying Stock Funds and their investment
objectives and strategies, please see "Underlying Funds." The Sub-Advisers for
the Underlying Stock Funds each have different investment philosophies and
processes which are reflected in the Funds they manage. Through asset
allocation, PIMCO Advisors can take advantage of the expertise of each Sub-
Adviser and combine the investment styles set forth above in providing broadly
diversified Portfolios. For a description of each Sub-Adviser and its
particular investment philosophy and process, please see "Underlying Funds--
Sub-Advisers" in this Prospectus, and the Statement of Additional Information
and the Underlying Fund Prospectuses, which are incorporated herein by
reference and are available free of charge by telephoning the Trust at 1-800-
927-4648.     
 
                                                                   Prospectus
                                                                             11
<PAGE>
 
Fixed Income Portion of the Portfolios
 
  The fixed income portion of each Portfolio will be allocated among a number
of Underlying Bond Funds which provide a broad range of fixed income-based
investment objectives and strategies. By allocating assets among these Funds,
the fixed income portions of the Portfolios can be diversified in multiple
ways, including the following:
 
  By Region
 
  . U.S. Fixed Income
  . Foreign Fixed Income
 
  By Sector/Investment Specialty
 
  . Governments
  . Mortgages
  . Corporate
  . Inflation-Indexed
 
  By Credit Quality
 
  . Investment Grade/Money Market
  . Medium Grade
  . High Yield
 
  By Duration
 
  . Long-Term
  . Intermediate-Term
  . Short-Term
   
  For a description of the Underlying Bond Funds and their investment
objectives and strategies, please see "Underlying Funds." Pacific Investment
Management is the sole investment adviser for each Underlying Bond Fund.
Through asset allocation, PIMCO Advisors can take advantage of the broad fixed
income expertise of Pacific Investment Management and combine the investment
styles set forth above in providing broadly diversified Portfolios. For a
description of Pacific Investment Management and its investment philosophy and
process, please see "Underlying Funds--Sub-Advisers" in this Prospectus, the
Statement of Additional Information and the Underlying Fund Prospectuses,
which are incorporated herein by reference and are available free of charge by
telephoning the Trust at 1-800-927-4648.     
 
Potential Conflicts of Interest
 
  As described above, PIMCO Advisors has broad discretion to allocate and
reallocate the Portfolios' assets among the Underlying Funds, consistent with
the Portfolios' investment objectives and policies and the asset allocation
ranges specified above. Although PIMCO Advisors does not charge an investment
advisory fee for its asset allocation services, PIMCO Advisors and its
affiliates indirectly receive fees (including investment advisory and
administrative fees) from the Underlying Funds in which the Portfolios invest.
In this regard, PIMCO Advisors has a financial incentive to invest a
Portfolio's assets in Underlying Funds with higher fees than other Funds, even
if it believes that alternate investments would better serve the Portfolio's
investment program. PIMCO Advisors is legally obligated to disregard that
incentive in making asset allocation decisions for the Portfolios. The
Trustees and officers of the Trust may also have conflicting interests in
fulfilling their fiduciary duties to both the Portfolios and the Underlying
Funds.
 
 
12
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
General Risks of Investing in the Portfolios
 
  Because the Portfolios invest all of their assets in the Underlying Funds,
the risks associated with investing in the Portfolios are closely related to
the risks associated with the securities held by the Underlying Funds. The
ability of a Portfolio to achieve its investment objective will depend upon
the ability of the Underlying Funds to achieve their objectives. Of course,
the extent to which the investment performance and risks associated with a
particular Portfolio correlate to those of a particular Underlying Fund will
depend upon the extent to which the Portfolio's assets are allocated from time
to time for investment in the Underlying Fund. For a description of the
principal risks associated with investments in the Underlying Funds, please
see "Underlying Funds--Principal Risks of the Underlying Funds" in this
Prospectus, "Investment Objectives and Policies" in the Statement of
Additional Information and "Characteristics and Risks of Securities and
Investment Techniques" in the Underlying Fund Prospectuses, which are
incorporated herein by reference and are available free of charge by
telephoning the Trust at 1-800-927-4648.
 
Portfolio Turnover
   
  A change in the securities held by a Portfolio is known as "portfolio
turnover." Because PIMCO Advisors does not expect to reallocate the
Portfolios' assets among the Underlying Funds on a frequent basis, the
portfolio turnover rates for the Portfolios are expected to be modest (i.e.,
less than 25%) in comparison to most mutual funds. However, the Portfolios'
indirectly bear the expenses associated with portfolio turnover of the
Underlying Funds, a number of which have fairly high portfolio turnover rates
(i.e., in excess of 100%). High portfolio turnover involves correspondingly
greater expenses to an Underlying Fund, including brokerage commissions or
dealer mark-ups and other transaction costs on the sale of securities and
reinvestments in other securities. Shareholders in the Portfolios may also
bear expenses directly or indirectly through sales of securities held by the
Portfolios and the Underlying Funds which result in realization of ordinary
income or taxable capital gains (including short-term capital gains which are
generally taxed to shareholders at ordinary income tax rates). See "Dividends,
Distributions and Taxes."     
 
Service Systems--Year 2000 Problem
 
  Many of the services provided to the Portfolios depend on the smooth
functioning of computer systems. Many systems in use today cannot distinguish
between the year 1900 and the year 2000. Should any of the service systems
fail to process information properly, that could have an adverse impact on the
Portfolios' operations and services provided to shareholders. The Adviser,
Distributor, Shareholder Servicing and Transfer Agent, Custodian and certain
other service providers to the Portfolios have reported that each is working
toward mitigating the risks associated with the so-called "year 2000 problem."
However, there can be no assurance that the problem will be corrected in all
respects and that the Portfolios' operations and services provided to
shareholders will not be adversely affected, nor can there be any assurance
that the year 2000 problem will not have an adverse effect on the entities
whose securities are held by the Underlying Funds or on domestic or global
equity markets or economies, generally.
 
"Fundamental" Policies
 
  The investment objective of each Portfolio described in this Prospectus may
be changed by the Board of Trustees without shareholder approval. If there is
a change in a Portfolio's investment objective, shareholders should consider
whether the Portfolio remains an appropriate investment in light of their then
current financial positions and needs.
                                                                   Prospectus
                                                                             13
<PAGE>
 
                               UNDERLYING FUNDS
 
  Each Portfolio invests all of its assets in Underlying Funds. Accordingly,
each Portfolio's investment performance depends upon a favorable allocation
among the Underlying Funds as well as the ability of the Underlying Funds to
meet their objectives. There can be no assurance that the investment objective
of any Underlying Fund will be achieved. Shares of the Underlying Funds are
not offered in this Prospectus.
   
Sub-Advisers     
   
  PIMCO Advisors serves as investment adviser for each of the Underlying Stock
Funds. The PIMCO Equity Advisors division ("PIMCO Equity Advisors") of PIMCO
Advisors manages the investments of PIMCO Growth, Target, Opportunity and
Innovation Funds. Affiliates of PIMCO Advisors serve as sub-advisers for the
remaining Underlying Stock Funds, except that another affiliate, Pacific
Investment Management, is the sole investment adviser to PIMCO StocksPLUS
Fund. Under these arrangements, PIMCO Equity Advisors, the sub-advisers and
Pacific Investment Management (referred to collectively as "Sub-Advisers")
have full investment discretion and make all determinations with respect to
the investment of the assets of these Funds. Pacific Investment Management is
also the sole investment adviser to each Underlying Bond Fund. The Sub-
Advisers and their investment specialties are listed below.     
 
<TABLE>   
<CAPTION>
 Sub-Adviser                                         Investment Specialty
- -------------------------------------------------------------------------------
 <C>                                                 <S>
 Blairlogie Capital Management ("Blairlogie") (/1/)  International stocks using
                                                     Scottish standards of
                                                     prudent investment
                                                     management with modern
                                                     quantitative analytical
                                                     tools
                                                     --------------------------
 Cadence Capital Management ("Cadence")              Stocks of growth companies
                                                     that the Sub-Adviser
                                                     believes are trading at a
                                                     reasonable price
                                                     --------------------------
 Columbus Circle Investors ("Columbus Circle") (/2/) Stocks, using its
                                                     "Positive Momentum &
                                                     Positive Surprise"
                                                     discipline
                                                     --------------------------
 NFJ Investment Group ("NFJ")                        Value stocks that the Sub-
                                                     Adviser believes are
                                                     undervalued and/or offer
                                                     above-average dividend
                                                     yields
                                                     --------------------------
 Pacific Investment Management                       All sectors of the bond
                                                     market using its total
                                                     return philosophy--seeking
                                                     both yield and capital
                                                     appreciation
                                                     --------------------------
 Parametric Portfolio Associates ("Parametric")      Stocks, using
                                                     quantitatively-driven
                                                     fundamental analysis and
                                                     economic methods, with
                                                     specialties in emerging
                                                     markets and tax-efficient
                                                     products
                                                     --------------------------
 PIMCO Equity Advisors                               Disciplined approach to
                                                     identifying quality growth
                                                     companies
- -------------------------------------------------------------------------------
</TABLE>    
          
1. On or about April 30, 1999, it is anticipated that PIMCO Advisors will sell
   substantially all of its ownership interest in Blairlogie. PIMCO Advisors
   has determined to continue to retain Blairlogie as Sub-Adviser for PIMCO
   International Fund.     
   
2. On or about May 7, 1999, PIMCO Equity Advisors will assume portfolio
   management responsibility for PIMCO Renaissance Fund, an Underlying Stock
   Fund currently managed by Columbus Circle.     
   
Underlying Stock Funds     
   
  The table on the following page provides a concise description of the
investment objective and primary investments of each Underlying Stock Fund and
lists the Fund's Sub-Adviser. For a complete description of these Funds,
please see the Underlying Fund Prospectuses, which are incorporated herein by
reference and are available free of charge by telephoning the Trust at 1-800-
927-4648.     
 
14
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
<TABLE>   
<CAPTION>
                 Fund Name           Investment Objective                   Primary Investments           Sub-Adviser
- ------------------------------------------------------------------------------------------------------------------------------------
<S>              <C>                 <C>                                    <C>                           <C> 
Growth Stock     PIMCO Growth        Long-term growth of capital; income is Common stocks of companies    PIMCO Equity Advisors/(1)/
Funds                                incidental                             with market capitalizations
                                                                            of at least $5 billion
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Target        Capital appreciation; no consideration Common stocks of companies    PIMCO Equity Advisors/(1)/
                                     given to income                        with between $1 billion and
                                                                            $10 billion of market
                                                                            capitalizations
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Opportunity   Capital appreciation; no consideration Common stocks of companies    PIMCO Equity Advisors/(1)/
                                     given to income                        with market capitalizations
                                                                            of less than $2 billion
- ------------------------------------------------------------------------------------------------------------------------------------
Blend Stock      PIMCO Capital       Growth of capital                      Common stocks of companies    Cadence
Funds            Appreciation                                               with market capitalizations
                                                                            of at least $1 billion that
                                                                            have improving fundamentals
                                                                            and whose stock is
                                                                            reasonably valued by the
                                                                            market
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Mid-Cap       Growth of capital                      Common stocks of companies    Cadence
                 Growth                                                     with market capitalizations
                                                                            in excess of $500 million
                                                                            that have improving
                                                                            fundamentals and whose stock
                                                                            is reasonably valued by the
                                                                            market
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Small-Cap     Growth of capital                      Common stocks of companies    Cadence
                 Growth                                                     with market capitalizations
                                                                            between $50 million and $1
                                                                            billion that have improving
                                                                            fundamentals and whose stock
                                                                            is reasonably valued by the
                                                                            market
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Micro-Cap     Long-term growth of capital            Common stocks of companies    Cadence
                 Growth                                                     with market capitalizations
                                                                            of less than $100 million
                                                                            that have improving
                                                                            fundamentals and whose stock
                                                                            is reasonably valued by the
                                                                            market
- ------------------------------------------------------------------------------------------------------------------------------------
Value Stock      PIMCO Equity Income Current income as a primary objective; Common stocks with below-     NFJ
Funds                                long- term growth of capital as a      average price to earnings
                                     secondary objective                    ratios and higher dividend
                                                                            yields relative to their
                                                                            industry groups
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Renaissance   Long-term growth of capital and income Common stocks with below-     Columbus Circle /(2)/
                                                                            average valuations that have
                                                                            improving business
                                                                            fundamentals
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Value         Long-term growth of capital and income Common stocks with below-     NFJ
                                                                            average price to earnings
                                                                            ratios relative to their
                                                                            industry groups
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Value 25      Long-term growth of capital and income Approximately 25 common       NFJ
                                                                            stocks of companies with
                                                                            medium market
                                                                            capitalizations and below-
                                                                            average price to earnings
                                                                            ratios relative to their
                                                                            industry groups
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Small-Cap     Long-term growth of capital and income Common stocks of companies    NFJ
                 Value                                                      with market capitalizations
                                                                            between $50 million and $1
                                                                            billion and below-average
                                                                            price to earnings ratios
                                                                            relative to their industry
                                                                            groups
- ------------------------------------------------------------------------------------------------------------------------------------
Enhanced         PIMCO Tax-Efficient Maximum after-tax growth of capital    A broadly diversified         Parametric
Index Stock      Equity                                                     portfolio of at least 200
Funds                                                                       common stocks of companies
                                                                            with larger
                                                                            market capitalizations
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Enhanced      Total return which equals or exceeds   Common stocks represented     Parametric
                 Equity              the total return performance of an     in the S&P 500
                                     index representing the performance of
                                     a reasonably broad spectrum of common
                                     stocks (currently the S&P 500 (/3/))
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO StocksPLUS    Total return which exceeds the total   S&P 500 stock index           Pacific Investment
                                     return performance of the S&P 500      derivatives backed by         Management        
                                                                            a portfolio of fixed income
                                                                            securities
- ------------------------------------------------------------------------------------------------------------------------------------
International    PIMCO International Capital appreciation; income is        Non-U.S. stocks of companies  Blairlogie /(4)/
Stock Funds                          incidental                             with small, medium and large
                                                                            market capitalizations
                                                                            (developed and emerging
                                                                            markets)
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO International Long-term capital appreciation         An international portfolio    Columbus Circle
                 Growth                                                     of equity and equity-related
                                                                            securities
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Structured    Long-term growth of capital            Common stocks of companies    Parametric
                 Emerging Markets                                           located in emerging market
                                                                            countries
                 -------------------------------------------------------------------------------------------------------------------
                 PIMCO Tax-Efficient Same as PIMCO Structured Emerging      Common stocks of companies    Parametric 
                 Structured          Markets Fund, except that the Fund     located in emerging market
                 Emerging Markets    seeks to achieve superior after-tax    countries
                                     returns by employing a variety of tax-
                                     efficient management strategies
- ------------------------------------------------------------------------------------------------------------------------------------
Sector-Related   PIMCO Innovation    Capital appreciation; no consideration Common stocks of companies    PIMCO Equity Advisors/(1)/
Stock Funds                          given to income                        with small, medium and large
                                                                            market capitalizations
                                                                            (technology-related stocks)
</TABLE>    
   
1. Prior to March 5, 1999, Columbus Circle served as Sub-Adviser for PIMCO
   Growth, Target, Opportunity and Innovation Funds.     
   
2. On or about May 7, 1999, PIMCO Equity Advisors will assume portfolio manage-
   ment responsibility for PIMCO Renaissance Fund.     
   
3. The Standard & Poor's 500 Composite Stock Price Index.     
   
4. On or about April 30, 1999, it is anticipated that PIMCO Advisors will sell
   substantially all of its ownership interest in Blairlogie. PIMCO Advisors
   has determined to continue to retain Blairlogie as Sub-Adviser for PIMCO In-
   ternational Fund.     
                                                                   Prospectus
                                                                              15
<PAGE>
 
Underlying Bond Funds
   
  Pacific Investment Management, an affiliate of PIMCO Advisors, has full
investment discretion and makes all determinations with respect to the
investment of the assets of each Underlying Bond Fund.     
 
  The investment objective of each Underlying Bond Fund (except as provided
below) is to seek to realize maximum total return, consistent with
preservation of capital and prudent investment management. The "total return"
sought by most of the Underlying Bond Funds will consist of interest and
dividends from underlying securities and capital appreciation or depreciation
reflected in changes in the value of portfolio securities. The investment
objective of PIMCO Real Return Bond Fund is to seek to realize maximum real
return, consistent with preservation of real capital and prudent investment
management. "Real return" is total return adjusted for inflation. The
investment objective of each of PIMCO Money Market Fund and PIMCO Short-Term
Fund is to seek to obtain maximum current income consistent with preservation
of capital and daily liquidity. PIMCO Money Market Fund also attempts to
maintain a stable net asset value of $1.00 per share, although there can be no
assurance that it will be successful in doing so.
 
  The following provides a concise description of the primary investments of
and other information relating to each Underlying Bond Fund. For a complete
description of these Funds, please see the Underlying Fund Prospectus for
PIMCO Funds: Pacific Investment Management Series, which is incorporated
herein by reference and is available free of charge by telephoning the Trust
at 1-800-927-4648.
 
<TABLE>   
<CAPTION>
                Fund Name                   Primary Investments                Duration         Credit Quality (/1/)
- -----------------------------------------------------------------------------------------------------------------------
 <C>            <C>                         <S>                                <C>              <C>
 Short          PIMCO Money Market          Money market instruments           (less than or     Min 95% Aaa or Prime 1;
 Duration                                                                      equal to) 90 days (less than or equal to)
 Bond Funds                                                                    dollar-weighted   5% Aa or Prime 2 
                                                                               average maturity
             ----------------------------------------------------------------------------------------------------------
                PIMCO Short-Term            Money market instruments           0-1 yr           B to Aaa; max 10%
                                            and short maturity fixed                            below Baa
                                            income securities
             ----------------------------------------------------------------------------------------------------------
                PIMCO Low Duration          Short and intermediate             1-3 yrs          B to Aaa; max 10%
                                            maturity fixed income                               below Baa
                                            securities
- -----------------------------------------------------------------------------------------------------------------------
 Intermediate   PIMCO Moderate Duration     Short and intermediate             2-5 yrs          B to Aaa; max 10%
 Duration                                   maturity fixed income                               below Baa
 Bond Funds                                 securities
             ----------------------------------------------------------------------------------------------------------
                PIMCO Total Return          Intermediate maturity              3-6 yrs          B to Aaa; max 10%
                                            fixed income securities                             below Baa
             ----------------------------------------------------------------------------------------------------------
                PIMCO Total Return II       Same as PIMCO Total Return         3-6 yrs          Baa to Aaa
                                            Fund, except that the Fund
                                            is subject to credit quality and
                                            foreign issuer
                                            restrictions
- -----------------------------------------------------------------------------------------------------------------------
 Long Duration  PIMCO Long-Term U.S.        Long-term maturity fixed           8 or more yrs    A to Aaa
 Bond Funds     Government                  income securities
- -----------------------------------------------------------------------------------------------------------------------
 International  PIMCO Global Bond           Intermediate maturity U.S.         3-7 yrs          B to Aaa; max 10%
 Bond Funds                                 and foreign fixed income                            below Baa
                                            securities
             ----------------------------------------------------------------------------------------------------------
                PIMCO Foreign Bond          Intermediate maturity              3-7 yrs          B to Aaa; max 10%
                                            hedged foreign fixed                                below Baa
                                            income securities
             ----------------------------------------------------------------------------------------------------------
                PIMCO Emerging Markets Bond Emerging market fixed              0-8 yrs          B to Aaa
                                            income securities
- -----------------------------------------------------------------------------------------------------------------------
 High Yield     PIMCO High Yield            Higher yielding fixed              2-6 yrs          B to Aaa; min 65%
 Bond                                       income securities                                   below Baa
 Funds
- -----------------------------------------------------------------------------------------------------------------------
 Inflation      PIMCO Real Return Bond      Inflation-indexed fixed            N/A              B to Aaa; max 10%
 Indexed                                    income securities                                   below Baa
 Bond Funds
<CAPTION>
                                    Foreign (/2/)
- -----------------------------------------------------------------------------------------------------------------------
                                    <C>
                                    0%
             ----------------------------------------------------------------------------------------------------------
                                    0-5%
             ----------------------------------------------------------------------------------------------------------
                                    0-20%
- -----------------------------------------------------------------------------------------------------------------------
                                    0-20%
             ----------------------------------------------------------------------------------------------------------
                                    0-20%
             ----------------------------------------------------------------------------------------------------------
                                    0%
- -----------------------------------------------------------------------------------------------------------------------
                                    0%
- -----------------------------------------------------------------------------------------------------------------------
                                    25-75%
             ----------------------------------------------------------------------------------------------------------
                          (greater than or equal to) 85%
             ----------------------------------------------------------------------------------------------------------
                          (greater than or equal to) 80%
- -----------------------------------------------------------------------------------------------------------------------
                                    0%
- -----------------------------------------------------------------------------------------------------------------------
                                    0-35%
</TABLE>    
 
1. As rated by Moody's Investors Service, Inc., or if unrated, determined by
 Pacific Investment Management to be of comparable quality.
2. Percentage limitations relate to foreign currency-denominated securities
 for all Underlying Bond Funds except PIMCO Foreign Bond, Global Bond and
 Emerging Markets Bond Funds. Percentage limitations for these three Funds re-
 late to securities of foreign issuers, denominated in any currency. Each Un-
 derlying Bond Fund (except PIMCO Total Return II and Long-Term U.S. Govern-
 ment Funds) may invest beyond these limits in U.S. dollar-denominated securi-
 ties of foreign issuers. PIMCO Total Return II and Long-Term U.S. Government
 Funds may not invest in any securities of foreign issuers.
 
 
16
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
  Each Underlying Bond Fund will normally invest at least 65% of its assets in
the following types of securities, which, unless provided above, may be issued
by domestic or foreign entities and denominated in U.S. dollars or foreign
currencies: securities issued or guaranteed by the U.S. Government, its
agencies or instrumentalities ("U.S. Government securities"); corporate debt
securities, including convertible securities and corporate commercial paper;
mortgage-backed and other asset-backed securities; inflation-indexed bonds
issued by both governments and corporations; structured notes, including
hybrid or "indexed" securities, catastrophe bonds and loan participations;
delayed funding loans and revolving credit facilities; bank certificates of
deposit, fixed time deposits and bankers' acceptances; repurchase agreements
and reverse repurchase agreements; debt securities issued by states or local
governments and their agencies, authorities and instrumentalities; obligations
of foreign governments or their subdivisions, agencies and instrumentalities;
and obligations of international agencies or supranational entities. Fixed
income securities may have fixed, variable or floating rates of interest,
including rates of interest that vary inversely at a multiple of a designated
or floating rate, or that vary according to changes in relative values of
currencies. Most of the Underlying Bond Funds may (but are not required to)
make substantial use of derivative instruments or use a series of purchase and
sale contracts or other investment techniques to obtain market exposure to the
securities in which they primarily invest.
 
Additional Underlying Funds
   
  In addition to the Funds listed above, a Portfolio may invest in additional
Underlying Funds, including those that may become available for investment in
the future, at the discretion of PIMCO Advisors and without shareholder
approval. Although each Portfolio currently invests in PIMCO Core Equity and
Mid-Cap Equity Funds, it is expected that the Portfolios will no longer have
investments in these Underlying Funds on and after May 1, 1999.     
 
Principal Risks of the Underlying Funds
 
  There can be no assurance that the investment objectives of any of the
Underlying Funds will be achieved. The following summarizes principal risks
associated with investments in the Underlying Funds. The summary is not
intended to be exhaustive. For a more complete description of these risks,
please refer to "Investment Objectives and Policies" in the Statement of
Additional Information and "Characteristics and Risks of Securities and
Investment Techniques" in the Underlying Fund Prospectuses, which are
incorporated herein by reference and are available free of charge by
telephoning the Trust at 1-800-927-4648.
 
  Market Risk Most securities in which the Underlying Funds invest are subject
to some degree of market risk, which is the risk of unfavorable market-induced
changes in the value of a security. The following summarizes general market
risks associated with investments in fixed income and equity securities.
 
  Fixed Income Securities Changes in the market values of fixed income
securities (i.e., capital appreciation or depreciation) are largely a function
of changes in the current level of interest rates. The value of an Underlying
Fund's investments in fixed income securities will typically change as the
level of interest rates fluctuate. During periods of falling interest rates,
the value of fixed income securities generally rise. Conversely, during
periods of rising interest rates, the value of fixed income securities
generally decline.
 
  "Duration" is one measure of the expected life of a fixed income security.
When interest rates are falling, a portfolio with a shorter duration will
generally not generate as high a level of total return as a portfolio with a
longer duration. When interest rates are rising, a portfolio with a shorter
duration will generally outperform a longer duration portfolio. When interest
rates are flat, shorter duration portfolios generally will not generate as
high a level of total return as longer duration portfolios (assuming that
long-term interest rates are higher than short-term rates, which is commonly
the case). Accordingly, longer duration portfolios generally have a greater
potential for total return than shorter duration portfolios,
                                                                   Prospectus
                                                                             17
<PAGE>
 
but are also subject to greater levels of market risk and price volatility.
Therefore, Underlying Bond Funds with longer average portfolio durations
(e.g., PIMCO Long-Term U.S. Government Fund) are generally subject to higher
levels of market risk than Funds with shorter durations (e.g., PIMCO Money
Market, Short-Term and Low Duration Funds). Also, some portfolios (e.g., those
with mortgage-backed and other prepayable securities) have changing durations
and may have increasing durations precisely when that is least advantageous
(i.e., when interest rates are rising).
 
  Certain types of securities in which the Underlying Bond Funds may invest
are particularly sensitive to fluctuations in prevailing interest rates and
have relatively high levels of market risk. These include various mortgage-
related securities (for instance, the interest-only or "IO" class of a
stripped mortgage-backed security) and "zero coupon" securities (fixed income
securities, including certain U.S. Government securities, that do not make
periodic interest payments and are purchased at a discount from their value at
maturity). Please see "Investment Objectives and Policies" in the Statement of
Additional Information for a description of these and other fixed income
securities that are particularly sensitive to market risk.
 
  Equity Securities Changes in the market values of equity securities (i.e.,
capital appreciation or depreciation) may depend upon a number of factors,
including: general economic and market conditions; prospects of the security's
issuer; changing interest rates; real or perceived economic and competitive
industry conditions; and currency exchange rates. Generally, over the long
term, the total return obtained by a portfolio that invests primarily in
equity securities has historically been greater than that obtained by a
portfolio that invests primarily in fixed income securities. However, an
equity portfolio is generally subject to greater market risk and price
volatility than a fixed income portfolio and is considered to be a more
aggressive investment.
 
  Credit Risk of Fixed Income Securities Credit risk associated with
investments in fixed income securities relates to the ability of the issuer to
make scheduled payments of principal and interest on an obligation. The
Underlying Funds that invest in fixed income securities are subject to varying
degrees of risk that the issuers of the securities will have their credit
ratings downgraded or will default, potentially reducing the Underlying Fund's
share price and income level. Nearly all fixed income securities are subject
to some credit risk, whether the issuers of the securities are corporations,
states and local governments or foreign governments. Even certain U.S.
Government securities are subject to credit risk.
 
  Credit risk is particularly acute for Underlying Funds which invest in so-
called "high-yield" securities or "junk" bonds, which are fixed income
securities rated lower than Baa by Moody's Investors Service, Inc. ("Moody's")
or BBB by Standard & Poor's Ratings Services ("S&P"), or are determined to be
of comparable quality to securities so rated. While such securities offer the
potential for higher investment returns than higher-rated securities, they
carry a high degree of credit risk and are considered predominantly
speculative with respect to the issuer's continuing ability to meet principal
and interest payments. High yield securities may also be more susceptible to
real or perceived adverse economic and competitive industry conditions and may
be less liquid than higher-rated securities. Accordingly, Underlying Funds
which invest a significant portion of their assets in high yield securities
(e.g., PIMCO High Yield and Emerging Markets Bond Funds) are subject to
substantial credit risk, while Funds that invest in higher quality securities
(e.g., PIMCO Money Market and Long-Term U.S. Government Funds) are subject to
less credit risk.
   
  Investments in Companies with Small Market Capitalizations Certain
Underlying Stock Funds (in particular, PIMCO Opportunity, Small-Cap Growth,
Micro-Cap Growth and Small-Cap Value Funds) invest in common stock of
companies with market capitalizations that are small compared to other
publicly traded companies. Investments in smaller, less seasoned companies may
present greater opportunities for growth and capital appreciation, but also
involve greater risks than customarily are associated with larger, more
established companies. These companies may have limited     
 
18
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
product lines, markets or financial resources, or they may be dependent upon a
limited management group. In addition, their securities may be traded in the
over-the-counter market or on a regional exchange, or may otherwise have
limited liquidity.
 
  Foreign Securities and Currencies Many Underlying Funds (in particular,
PIMCO International, International Growth, Structured Emerging Markets, Tax-
Efficient Structured Emerging Markets, Global Bond, Foreign Bond and Emerging
Markets Bond Funds) invest in securities of foreign issuers, securities traded
principally in securities markets outside the United States and/or securities
denominated in foreign currencies (together, "foreign securities").
 
  Investing in foreign securities involves special risks not typically
associated with investing in U.S. securities. These risks include: differences
in accounting, auditing and financial reporting standards; generally higher
commission rates on foreign portfolio transactions; higher custodial costs;
the possibility that foreign taxes will be charged on dividends and interest
payable on foreign securities; the possibility of nationalization,
expropriation or confiscatory taxation; adverse changes in investment or
exchange control regulations (which may include suspension of the ability to
transfer currency from a country); political instability; the possibility of
unfavorable foreign economic factors; and greater price volatility.
 
  Certain Underlying Funds (in particular, PIMCO Structured Emerging Markets,
Tax-Efficient Structured Emerging Markets and Emerging Markets Bond Funds) may
invest in the securities of issuers based in countries with developing or
"emerging market" economies. These securities may present market, credit,
currency, liquidity, legal, political and other risks greater than, or in
addition to, risks of investing in developed foreign countries. These risks
include: high currency exchange rate fluctuations; greater social, economic
and political uncertainty and instability (including the risk of war); more
substantial governmental involvement in the economy; less governmental
supervision and regulation of the securities markets and participants in those
markets; unavailability of currency hedging techniques in certain emerging
market countries; the fact that companies in emerging market countries may be
newly organized and may be smaller and less seasoned companies; the difference
in, or lack of, auditing and financial reporting standards, which may result
in unavailability of material information about issuers; different clearance
and settlement procedures, which may be unable to keep pace with the volume of
securities transactions or otherwise make it difficult to engage in such
transactions; the risk that it may be more difficult to obtain and/or enforce
legal judgments in foreign jurisdictions; and significantly smaller market
capitalizations of emerging market issuers.
 
  Underlying Funds that invest in fixed income securities denominated in
foreign currencies or in foreign currencies and related derivative instruments
(in particular, PIMCO Global Bond, Foreign Bond and Emerging Markets Bond
Funds) and Underlying Funds that invest in equity securities traded
principally in foreign currencies, may be adversely affected by changes in
foreign currency exchange rates. Those rates may fluctuate significantly over
short periods of time for a number of reasons, including the forces of supply
and demand in the foreign exchange markets, actual or perceived changes in
interest rates, and intervention (or the failure to intervene) by U.S. or
foreign governments or central banks, or by currency controls or political
developments in the U.S. or abroad. For example, significant uncertainty
surrounds the recent introduction of the euro (a common currency unit for the
European Union) in January 1999 and its ongoing effect on the value of
securities denominated in local European currencies. For a more complete
discussion of foreign currency risks (including those associated with the
euro), please see "Investment Objectives and Policies--Foreign Currencies" in
the Statement of Additional Information.
 
  Derivative Instruments The Underlying Funds (with the exception of PIMCO
Money Market Fund) may (but are not required to) utilize a number of
derivative instruments for risk management purposes or as part of their
investment strategies. These include futures contracts, options contracts,
options on futures contracts, forward contracts and swap
                                                                   Prospectus
                                                                             19
<PAGE>
 
agreements. Generally, derivatives are financial contracts whose value depends
upon, or is derived from, the value of an underlying asset, reference rate or
index, and may relate to stocks, bonds, interest rates, currencies or currency
exchange rates, commodities, and related indexes. For a description of the
various derivative instruments that may be utilized by the Underlying Funds,
please see "Investment Objectives and Policies" in the Statement of Additional
Information.
 
  The use of derivatives instruments involves risks different from, or greater
than, the risks associated with investing directly in securities and other
more traditional investments. The following provides a general discussion of
important risk factors relating to the use of derivative instruments by the
Underlying Funds.
 
  Management Risk Derivative products are highly specialized instruments that
require investment techniques and risk analyses different from those
associated with stocks and bonds. The use of a derivative requires an
understanding not only of the underlying instrument but also of the derivative
itself, without the benefit of observing the performance of the derivative
under all possible market conditions.
 
  Credit Risk The use of a derivative involves the risk that a loss may be
sustained as a result of the failure of another party to the contract (usually
referred to as a "counterparty") to make required payments or otherwise comply
with the contract's terms.
 
  Liquidity Risk Liquidity risk exists when a particular derivative instrument
is difficult to purchase or sell. If a derivative transaction is particularly
large or if the relevant market is illiquid (as is the case with many
privately negotiated derivatives), it may not be possible to initiate a
transaction or liquidate a position at an advantageous time or price.
 
  Leverage Risk Because many derivatives have a leverage component, adverse
changes in the value or level of the underlying asset, reference rate or index
can result in a loss substantially greater than the amount invested in the
derivative itself. Certain derivatives have the potential for unlimited loss,
regardless of the size of the initial investment. When an Underlying Fund uses
derivatives for leverage, investments in that Fund will tend to be more
volatile, resulting in larger gains or losses in response to market changes.
 
  Market and Other Risks Like most other investments, derivative instruments
are subject to the general risk that the market value of the instrument will
change in a way detrimental to the investor's interest. Other risks in using
derivatives include the risk of mispricing or improper valuation of
derivatives and the inability of derivatives to correlate perfectly with
underlying assets, rates and indexes. Many derivatives, in particular
privately negotiated derivatives, are complex and often valued subjectively.
Improper valuations can result in increased cash payment requirements to
counterparties or a loss of value to an Underlying Fund. Also, the value of
derivatives may not correlate perfectly, or at all, with the value of the
assets, reference rates or indices they are designed to closely track.
Consequently, an Underlying Fund's use of derivatives may not always be an
effective means of, and sometimes could be counterproductive to, furthering
the Fund's investment objective or risk management strategy. In addition,
suitable derivative transactions may not be available in all circumstances and
there can be no assurance that an Underlying Fund will engage in such
transactions at any given time or from time to time.
 
  A Note on PIMCO StocksPLUS Fund While the objective of PIMCO StocksPLUS Fund
is to achieve a total return which exceeds the total return performance of the
S&P 500, it does so by investing substantially all of its assets in a
combination of equity-based derivative instruments and a portfolio of fixed
income securities. Consequently, the risks of investing in the Fund include
the risks of derivatives and the risks generally associated with the
Underlying Bond Funds. To the extent that the Fund invests in S&P 500
derivatives backed by a portfolio of fixed income securities, under certain
 
20
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
conditions, generally in a market where the value of both S&P 500 derivatives
and fixed income securities are declining, the Fund may experience greater
losses than would be the case if it were to invest directly in a portfolio of
S&P 500 stocks.
 
  Certain Other Miscellaneous Investment Practices In addition to investing in
the securities listed above under "Primary Investments," some or all of the
Underlying Funds may to varying extents: lend portfolio securities; enter into
repurchase agreements and reverse repurchase agreements; purchase and sell
securities on a when-issued or delayed delivery basis; enter into forward
commitments to purchase securities; purchase and write call and put options on
securities and securities indexes; enter into futures contracts, options on
futures contracts and swap agreements; invest in foreign securities; and buy
or sell foreign currencies and enter into forward foreign currency contracts.
These and the other types of securities and investment techniques used by the
Underlying Funds all have attendant risks. The Portfolios are indirectly
subject to some or all of these risks to varying degrees because they invest
all of their assets in the Underlying Funds. For further information
concerning the investment practices of and risks associated with the
Underlying Funds, please see "Investment Objectives and Policies" in the
Statement of Additional Information and the Underlying Fund Prospectuses,
which are incorporated herein by reference and are available free of charge by
telephoning the Trust at 1-800-927-4648.
 
                         MANAGEMENT OF THE PORTFOLIOS
 
  The business affairs of the Trust are managed under the direction of the
Board of Trustees. Information about the Trustees and the Trust's executive
officers may be found in the Statement of Additional Information under the
heading "Management of the Trust."
 
Investment Adviser
   
  PIMCO Advisors serves as investment adviser to the Portfolios pursuant to an
investment advisory agreement with the Trust. PIMCO Advisors is a Delaware
limited partnership organized in 1987. PIMCO Advisors provides investment
management and advisory services to private accounts of institutional and
individual clients and to mutual funds. Total assets under management of PIMCO
Advisors and its subsidiary partnerships as of December 31, 1998 were
approximately $244.2 billion.     
 
  The general partners of PIMCO Advisors are PIMCO Partners, G.P. and PIMCO
Advisors Holdings L.P. ("PAH"). PIMCO Partners, G.P. is a general partnership
between PIMCO Holding LLC, a Delaware limited liability company and an
indirect wholly-owned subsidiary of Pacific Life Insurance Company, and PIMCO
Partners LLC, a California limited liability company controlled by the current
Managing Directors and two former Managing Directors of Pacific Investment
Management. PIMCO Partners, G.P. is the sole general partner of PAH. PIMCO
Advisors is governed by a Management Board, which exercises substantially all
of the governance powers of the general partner and serves as the functional
equivalent of a board of directors.
   
  PIMCO Advisors' address is 800 Newport Center Drive, Newport Beach,
California 92660. PIMCO Advisors is registered as an investment adviser with
the Securities and Exchange Commission. PIMCO Advisors currently has seven
affiliated investment adviser partnerships, the following six of which manage
one or more of the Underlying Funds: Blairlogie, Cadence, Columbus Circle,
NFJ, Pacific Investment Management and Parametric. On or about April 30, 1999,
it is anticipated that PIMCO Advisors will sell substantially all of its
ownership interest in Blairlogie. See "Underlying Funds--Sub-Advisers."     
                                                                   Prospectus
                                                                             21
<PAGE>
 
  PIMCO Advisors' Asset Allocation Committee is responsible for determining
how the Portfolios' assets are allocated and reallocated from time to time
among the Underlying Funds. Individuals who determine general investment
advice and constitute the Asset Allocation Committee for PIMCO Advisors are
William D. Cvengros, Timothy R. Clark, Robert S. Venable and David Young.
 
  William D. Cvengros is the Chief Executive Officer, President and a Member
of the Management Board of PIMCO Advisors and Chairman and a Trustee of the
Trust. He was formerly President of the Trust and a Director and the Vice
Chairman and Chief Investment Officer of Pacific Life Insurance Company. He
received a B.A. in Economics from the University of Notre Dame and an M.B.A.
from Northwestern University and he is a Chartered Financial Analyst. Timothy
R. Clark is a Vice President of PIMCO Advisors and a Senior Vice President of
PIMCO Funds Distributors LLC. He previously served as President of Katonah
Capital Management, Inc. Prior to that, he was with Zweig Advisors Inc. and
its affiliates serving in various capacities, including portfolio manager for
various open- and closed-end funds. He received a B.A. in Economics from
Harvard University and an M.B.A. from New York University. Robert S. Venable
is a Vice President of PIMCO Advisors. He previously served as a Vice
President and portfolio manager at Pacific Investment Management. Mr. Venable
has a B.S. from the University of California, Berkeley and an M.B.A. from the
Wharton School of Business and he is a Chartered Financial Analyst. David
Young is a Vice President in Account Management at Pacific Investment
Management. Previously, he was a Vice President--Client Relations and
Marketing of a former division of PIMCO Advisors, a Director--Client Relations
with Pacific Financial Asset Management Company and a Vice President and
portfolio manager with Analytic Investment Management, Inc. He received a B.A.
in Economics and Political Science and an M.B.A. from the University of
California, Irvine and he is a Chartered Financial Analyst.
 
  Under the investment advisory agreement, PIMCO Advisors, subject to the
supervision of the Board of Trustees, is responsible for providing advice and
guidance with respect to the Portfolios and for managing, either directly or
through others selected by the Adviser, the investment of the Portfolios.
PIMCO Advisors also furnishes to the Board of Trustees periodic reports on the
investment performance of each Portfolio.
       
Fund Administrator
 
  PIMCO Advisors also serves as administrator (the "Administrator") for the
Portfolios' Institutional Class and Administrative Class shares pursuant to an
administration agreement with the Trust. The Administrator provides or
procures administrative services for Institutional Class and Administrative
Class shareholders of the Portfolios, which include clerical help and
accounting, bookkeeping, internal audit services and certain other services
required by the Portfolios and preparation of reports to the Portfolios'
shareholders and regulatory filings. The Administrator has retained Pacific
Investment Management to provide such services as sub-administrator. The
Administrator and/or the sub-administrator may also retain other affiliates to
provide certain of these services. In addition, the Administrator, at its own
expense, arranges for the provision of legal, audit, custody, transfer agency
(including sub-transfer agency and other administrative services) and other
services necessary for the ordinary operation of the Portfolios, and is
responsible for the costs of registration of the Trust's shares and the
printing of prospectuses and shareholder reports for current shareholders.
 
  The Portfolios (and not the Administrator) are responsible for the following
expenses: (i) salaries and other compensation of any of the Trust's executive
officers and employees who are not officers, directors, stockholders or
employees of PIMCO Advisors, Pacific Investment Management or their
subsidiaries or affiliates; (ii) taxes and governmental fees; (iii) brokerage
fees and commissions and other portfolio transaction expenses; (iv) the costs
of borrowing money, including interest expenses; (v) fees and expenses of the
Trustees who are not "interested persons" of
 
22
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
the Adviser, any Sub-Adviser or the Trust, and any counsel retained
exclusively for their benefit; (vi) extraordinary expenses, including costs of
litigation and indemnification expenses; (vii) expenses which are capitalized
in accordance with generally accepted accounting principles; and (viii) any
expenses allocated or allocable to a specific class of shares, which include
distribution and/or service fees payable with respect to the Administrative
Class shares, and may include certain other expenses as permitted by the
Trust's Multiple Class Plan adopted pursuant to Rule 18f-3 under the 1940 Act,
subject to review and approval by the Trustees. The Portfolios also indirectly
pay their proportionate share of the expenses of the Underlying Funds
(including advisory and administrative fees) in which they invest. See
"Underlying Fund Expenses" below.     
 
Advisory Fees
 
  The Portfolios do not pay any fees to PIMCO Advisors under the Trust's
investment advisory agreement in return for the advisory and asset allocation
services provided by PIMCO Advisors. The Portfolios do, however, indirectly
pay a proportionate share of the advisory fees paid to PIMCO Advisors and
Pacific Investment Management by the Underlying Funds in which the Portfolios
invest. See "Underlying Fund Expenses" below.
 
Administrative Fees
   
  For providing or procuring administrative services to the Portfolios as
described above, the Administrator is entitled to receive monthly fees from
each Portfolio at the annual rate of 0.15% based on the average daily net
assets attributable in the aggregate to the Portfolio's Institutional Class
and Administrative Class shares. In order to reduce Portfolio expenses, the
Administrator has voluntarily undertaken to waive a portion of the
administrative fee it is entitled to receive for Institutional Class and
Administrative Class shares of each Portfolio until further notice. As a
result, during the period of the waiver, each Portfolio will pay
administrative fees to the Administrator at the annual rate of 0.10%,
calculated in the manner specified above. The Portfolios also indirectly pay a
proportionate share of the administrative fees charged by PIMCO Advisors and
Pacific Investment Management to the Underlying Funds in which the Portfolios
invest. See "Underlying Fund Expenses" below. The administration and sub-
administration agreements for the Portfolios may be terminated by the
Trustees, or by PIMCO Advisors or Pacific Investment Management (as the case
may be), on 60 days' written notice. Following their initial terms, the
agreements will continue from year-to-year if approved by the Trustees.     
 
Underlying Fund Expenses
 
  The expenses associated with investing in a "fund of funds," such as the
Portfolios, are generally higher than those for mutual funds that do not
invest primarily in other mutual funds. This is because shareholders in a
"fund of funds" indirectly pay a portion of the fees and expenses charged at
the underlying fund level.
 
  The Trust has structured the Portfolios to reduce expenses incurred at the
Underlying Fund level as follows: (a) the Portfolios do not pay any fees for
asset allocation or advisory services under the Trust's investment advisory
agreement; and (b) the Portfolios invest in Institutional Class shares of the
Underlying Funds, which are not subject to any sales charges or 12b-1 fees.
 
  The table on the following page sets forth annual advisory fee and total
operating expense information for Institutional Class shares of the Underlying
Funds. Shareholders of each Portfolio indirectly bear a proportionate share of
these expenses depending upon how the Portfolio's assets are allocated from
time to time among the Underlying Funds. See "Expense Information."
                                                                   Prospectus
                                                                             23
<PAGE>
 
 
<TABLE>   
<CAPTION>
                                   Annual Underlying Fund Expenses
                                   (Based on the average daily net assets
                                   attributable to a Fund's Institutional
                                   Class shares):
                                   Advisory Admini-       Total Fund
Underlying Fund                    Fees     strative Fees Operating Expenses
- ----------------------------------------------------------------------------
<S>                                <C>      <C>           <C>
PIMCO Growth                       0.50%    0.25%         0.75%
- ----------------------------------------------------------------------------
PIMCO Target                       0.55     0.25          0.80
- ----------------------------------------------------------------------------
PIMCO Opportunity                  0.65     0.25          0.90
- ----------------------------------------------------------------------------
PIMCO Capital Appreciation         0.45     0.25          0.70
- ----------------------------------------------------------------------------
PIMCO Mid-Cap Growth               0.45     0.25          0.70
- ----------------------------------------------------------------------------
PIMCO Small-Cap Growth             1.00     0.25          1.25
- ----------------------------------------------------------------------------
PIMCO Micro-Cap Growth             1.25     0.25          1.50
- ----------------------------------------------------------------------------
PIMCO Equity Income                0.45     0.25          0.70
- ----------------------------------------------------------------------------
PIMCO Renaissance                  0.60     0.25          0.85
- ----------------------------------------------------------------------------
PIMCO Value                        0.45     0.25          0.70
- ----------------------------------------------------------------------------
PIMCO Value 25                     0.50     0.25          0.75
- ----------------------------------------------------------------------------
PIMCO Small-Cap Value              0.60     0.25          0.85
- ----------------------------------------------------------------------------
PIMCO Tax-Efficient Equity         0.45     0.25          0.70
- ----------------------------------------------------------------------------
PIMCO Enhanced Equity              0.45     0.25          0.70
- ----------------------------------------------------------------------------
PIMCO StocksPLUS                   0.40     0.25          0.65
- ----------------------------------------------------------------------------
PIMCO International                0.55     0.50          1.05
- ----------------------------------------------------------------------------
PIMCO International Growth         0.85     0.50          1.35
- ----------------------------------------------------------------------------
PIMCO Structured Emerging Markets  0.45     0.50          0.95
- ----------------------------------------------------------------------------
PIMCO Tax-Efficient Structured
 Emerging Markets                  0.45     0.50          0.95
- ----------------------------------------------------------------------------
PIMCO Innovation                   0.65     0.25          0.90
- ----------------------------------------------------------------------------
PIMCO Money Market                 0.15     0.20          0.35
- ----------------------------------------------------------------------------
PIMCO Short-Term                   0.25     0.20          0.45
- ----------------------------------------------------------------------------
PIMCO Low Duration                 0.25     0.18          0.43
- ----------------------------------------------------------------------------
PIMCO Moderate Duration            0.25     0.20          0.45
- ----------------------------------------------------------------------------
PIMCO Total Return                 0.25     0.18          0.43
- ----------------------------------------------------------------------------
PIMCO Total Return II              0.25     0.25          0.50
- ----------------------------------------------------------------------------
PIMCO Long-Term U.S. Government    0.25     0.25          0.50
- ----------------------------------------------------------------------------
PIMCO Global Bond                  0.25     0.30          0.55
- ----------------------------------------------------------------------------
PIMCO Foreign Bond                 0.25     0.25          0.50
- ----------------------------------------------------------------------------
PIMCO Emerging Markets Bond        0.45     0.40          0.85
- ----------------------------------------------------------------------------
PIMCO High Yield                   0.25     0.25          0.50
- ----------------------------------------------------------------------------
PIMCO Real Return Bond             0.25     0.25          0.50
</TABLE>    
 
24
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
Service and Distribution Fees
 
  The Trust has adopted an Administrative Services Plan and a Distribution
Plan (the "Plans") with respect to the Administrative Class shares of each
Portfolio. Under the terms of the Plans, the Trust is permitted to reimburse,
out of the Administrative Class assets of each Portfolio, in an amount up to
 .25% on an annual basis of the average daily net assets of that class,
financial intermediaries that provide services in connection with the
distribution and marketing of shares and/or the provision of certain
shareholder services (in the case of the Distribution Plan) or the
administration of plans or programs that use shares of the Portfolios as their
funding medium (in the case of the Administrative Services Plan), and to
reimburse certain other related expenses. Total reimbursements under the Plans
may be paid in an amount up to .25% on an annual basis of the average daily
net assets attributable to the Administrative Class shares of each Portfolio.
The same entity may not receive both distribution and administrative services
fees with respect to the same assets but may with respect to separate assets
receive fees under each Plan. Fees paid pursuant to either Plan may be paid
for shareholder services and the maintenance of accounts, and therefore may
constitute "service fees" for purposes of applicable rules of the National
Association of Securities Dealers, Inc. Each Plan has been adopted in
accordance with the requirements of Rule 12b-1 under the 1940 Act and will be
administered in accordance with the provisions of that rule, except that
shareholders will not have the voting rights set forth in Rule 12b-1 with
respect to the Administrative Services Plan that they will have with respect
to the Distribution Plan. For more complete disclosure regarding the Plans and
their terms, see the Statement of Additional Information.
 
  Institutional and Administrative Class shares of the Portfolios may also be
offered through certain brokers and financial intermediaries ("service
agents") that have established a shareholder servicing relationship with the
Trust on behalf of their customers. The Trust pays no compensation to such
entities other than service fees paid with respect to Administrative Class
shares. Service agents may impose additional or different conditions on the
purchase or redemption of Portfolio shares by their customers and may charge
their customers transaction or other account fees on the purchase and
redemption of Portfolio shares. Each service agent is responsible for
transmitting to its customers a schedule of any such fees and information
regarding any additional or different conditions regarding purchases and
redemptions. Shareholders who are customers of service agents should consult
their service agents for information regarding these fees and conditions.
 
Distributor
 
  Shares of the Portfolios are distributed through PIMCO Funds Distributors
LLC (the "Distributor"), a wholly owned subsidiary of PIMCO Advisors. The
Distributor, located at 2187 Atlantic Street, Stamford, Connecticut 06902, is
a broker-dealer registered with the SEC.
 
                              PURCHASE OF SHARES
 
  Each Portfolio currently offers its shares in five classes: Institutional
Class, Administrative Class, Class A, Class B and Class C. This Prospectus
relates only to the Institutional Class shares and Administrative Class shares
of the Portfolios. For information regarding Class A, Class B and Class C
shares, see "Other Information--Multiple Classes of Shares" below.
 
  Shares of the Institutional Class are offered primarily for direct
investment by investors such as pension and profit sharing plans, employee
benefit trusts, endowments, foundations, corporations, and high net worth
individuals (Institutional Class shares may also be offered through certain
financial intermediaries that charge their customers transaction or other fees
with respect to their customers' investments in the Portfolios). Shares of the
Administrative
                                                                   Prospectus
                                                                             25
<PAGE>
 
Class are offered primarily through employee benefit plan alliances, broker-
dealers, and other intermediaries, and each Portfolio pays service and/or
distribution fees to such entities for services they provide to shareholders
of that class.
 
  Shares of either the Institutional Class or the Administrative Class of the
Portfolios may be purchased at the relevant net asset value of that class
without a sales charge or other fee. The minimum initial investment for shares
of either class is $5 million, except that the minimum initial investment for
a registered investment adviser purchasing Institutional Class shares for its
clients through omnibus accounts is $250,000 per Portfolio. Shares may also be
offered to clients of Blairlogie, Cadence, Columbus Circle, NFJ, Pacific
Investment Management, Parametric and their affiliates, and to the benefit
plans of PIMCO Advisors and its affiliates. In addition, the minimum initial
investment does not apply to shares of the Institutional Class offered through
fee-based programs sponsored and maintained by a registered broker-dealer and
approved by the Distributor pursuant to which each investor pays an asset
based fee at an annual rate of at least .50% of the assets in the account to a
financial intermediary for investment advisory and/or administrative services.
 
  Pension and profit-sharing plans, employee benefit trusts and employee
benefit plan alliances and "wrap account" programs established with broker-
dealers or financial intermediaries may purchase shares of either class only
if the plan or program for which the shares are being acquired will maintain
an omnibus or pooled account for each Portfolio and will not require a
Portfolio to pay any type of administrative payment per participant account to
any third party.
 
  The investment minimums discussed in this section do not apply to
participants in PIMCO Advisors Portfolio Strategies, a managed product
sponsored by PIMCO Advisors.
 
Initial Investment
 
  An account may be opened by completing and signing a Client Registration
Application and mailing it to PIMCO Funds at the following address: 840
Newport Center Drive, Suite 300, Newport Beach, California 92660. A Client
Registration Application may be obtained by calling 1-800-800-0952.
   
  Except as provided below, purchases of Institutional Class and
Administrative Class shares can only be made by wiring federal funds to
National Financial Data Services (the "Transfer Agent"), 330 West 9th Street,
4th Floor, Kansas City, Missouri 64105. Before wiring federal funds, the
investor must first telephone the Trust at 1-800-927-4648 to receive
instructions for wire transfer, and the following information will be
requested: name of authorized person; shareholder name; shareholder account
number; name of Portfolio and share class; amount being wired; and wiring bank
name.     
 
  Shares may be purchased without first wiring federal funds if the proceeds
of the investment are derived from an advisory account maintained by the
investor with PIMCO Advisors or one of its affiliates; from surrender or other
payment from an annuity, insurance, or other contract held by Pacific Life
Insurance Company; or from an investment by broker-dealers, institutional
clients or other financial intermediaries which have established a shareholder
servicing relationship with the Trust on behalf of their customers.
 
  A purchase order, together with payment in proper form, received by the
Transfer Agent prior to the close of regular trading (normally 4:00 p.m.,
Eastern time) on the New York Stock Exchange (the "Exchange"), on a day the
Trust is open for business, will be effected at that day's net asset value. An
order received after the close of regular trading on the Exchange will be
effected at the net asset value determined on the next business day. However,
orders received by certain retirement plans and other financial intermediaries
on a business day prior to the close of regular trading on the Exchange and
communicated to the Transfer Agent prior to 9:00 a.m., Eastern time, on the
following business day will be effected at the net asset value determined on
the prior business day. The Trust is "open for business" on each day the
Exchange
 
26
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
is open for trading, which excludes the following holidays: New Year's Day,
Martin Luther King, Jr. Day, Presidents' Day, Good Friday, Memorial Day,
Independence Day, Labor Day, Thanksgiving Day and Christmas Day. Purchase
orders will be accepted only on days on which the Trust is open for business.
 
Additional Investments
 
  Additional investments may be made at any time at the relevant net asset
value for the particular class by calling the Trust and wiring federal funds
to the Transfer Agent as outlined above.
 
Other Purchase Information
 
  Purchases of a Portfolio's Institutional Class and Administrative Class
shares will be made in full and fractional shares. In the interest of economy
and convenience, certificates for shares will not be issued.
 
  The Trust and the Distributor each reserves the right, in its sole
discretion, to suspend the offering of shares of the Portfolios or to reject
any purchase order, in whole or in part, when, in the judgment of management,
such suspension or rejection is in the best interests of the Trust. The Trust
and the Distributor may also waive the minimum initial investment for certain
investors.
 
  Purchases and sales should be made for long-term investment purposes only.
The Trust and Adviser each reserves the right to restrict purchases of
Portfolio shares (including exchanges) when a pattern of frequent purchases
and sales made in response to short-term fluctuations in share price appears
evident.
 
  Institutional Class and Administrative Class shares of the Trust are not
qualified or registered for sale in all states. Prospective investors should
inquire as to whether shares of a particular Portfolio are available for offer
and sale in their state of residence. Shares of the Trust may not be offered
or sold in any state unless registered or qualified in that jurisdiction or
unless an exemption from registration or qualification is available.
 
Retirement Plans
 
  Shares of the Portfolios are available for purchase by retirement and
savings plans, including Keogh plans, 401(k) plans, 403(b) custodial accounts,
and Individual Retirement Accounts. The administrator of a plan or employee
benefits office can provide participants or employees with detailed
information on how to participate in the plan and how to elect a Portfolio as
an investment option. Participants in a retirement or savings plan may be
permitted to elect different investment options, alter the amounts contributed
to the plan, or change how contributions are allocated among investment
options in accordance with the plan's specific provisions. The plan
administrator or employee benefits office should be consulted for details. For
questions about participant accounts, participants should contact their
employee benefits office, the plan administrator, or the organization that
provides recordkeeping services for the plan. Investors who purchase shares
through retirement plans should be aware that plan administrators may
aggregate purchase and redemption orders for participants in the plan.
Therefore, there may be a delay between the time the investor places an order
with the plan administrator and the time the order is forwarded to the
Transfer Agent for execution.
                                                                   Prospectus
                                                                             27
<PAGE>
 
                             REDEMPTION OF SHARES
 
Redemptions by Mail
 
  Institutional Class and Administrative Class shares may be redeemed by
submitting a written request to PIMCO Funds, 840 Newport Center Drive, Suite
300, Newport Beach, California 92660, stating the Portfolio from which the
shares are to be redeemed, the class of shares, the number or dollar amount of
the shares to be redeemed and the account number. The request must be signed
exactly as the names of the registered owners appear on the Trust's account
records, and the request must be signed by the minimum number of persons
designated on the Client Registration Application that are required to effect
a redemption.
 
Redemptions by Telephone or Other Wire Communication
 
  If an election is made on the Client Registration Application (or
subsequently in writing), redemptions of shares may be requested by calling
the Trust at 1-800-927-4648, by sending a facsimile to 1-949-760-4456, or by
other means of wire communication. Investors should state the Portfolio and
class from which the shares are to be redeemed, the number or dollar amount of
the shares to be redeemed and the account number. Redemption requests of an
amount of $10 million or more may be initiated by telephone, but must be
confirmed in writing by an authorized party prior to processing.
 
  In electing a telephone redemption, the investor authorizes Pacific
Investment Management and the Transfer Agent to act on telephone instructions
from any person representing himself to be the investor, and reasonably
believed by Pacific Investment Management and the Transfer Agent to be
genuine. Neither the Trust nor its Transfer Agent may be liable for any loss,
cost or expense for acting on instructions (whether in writing or by
telephone) believed by the party receiving such instructions to be genuine and
in accordance with the procedures described in this Prospectus. Shareholders
should realize that by electing the telephone or wire redemption option, they
may be giving up a measure of security that they might have if they were to
redeem their shares in writing. Furthermore, interruptions in telephone
service may mean that a shareholder will be unable to effect a redemption by
telephone when desired. The Transfer Agent also provides written confirmation
of transactions initiated by telephone as a procedure designed to confirm that
telephone instructions are genuine (written confirmation is also provided for
redemption requests received in writing). All telephone transactions are
recorded, and Pacific Investment Management or the Transfer Agent may request
certain information in order to verify that the person giving instructions is
authorized to do so. If the Trust or Transfer Agent fails to employ reasonable
procedures to confirm that instructions communicated by telephone are genuine,
it may be liable for any losses due to unauthorized or fraudulent telephone
transactions. All redemptions, whether initiated by letter or telephone, will
be processed in a timely manner, and proceeds will be forwarded by wire in
accordance with the redemption policies of the Trust detailed below. See
"Redemption of Shares--Other Redemption Information."
 
  Shareholders may decline telephone exchange or redemption privileges after
an account is opened by instructing the Transfer Agent in writing at least
seven business days prior to the date the instruction is to be effective.
Shareholders may experience delays in exercising telephone redemption
privileges during periods of abnormal market activity. During periods of
volatile economic or market conditions, shareholders may wish to consider
transmitting redemption orders by telegram, facsimile or overnight courier.
 
  Defined contribution plan participants may request redemptions by contacting
the employee benefits office, the plan administrator or the organization that
provides recordkeeping services for the plan.
 
28
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
Other Redemption Information
 
  Redemption requests for Portfolio shares are effected at the net asset value
per share next determined after receipt in good order of the redemption
request by the Trust or its designee. A redemption request received by the
Trust or its designee prior to the close of regular trading on the Exchange
(normally 4:00 p.m., Eastern time), on a day the Trust is open for business,
is effective on that day. A redemption request received after that time
becomes effective on the next business day.
 
  Payment of the redemption price will ordinarily be wired to the investor's
bank within three business days after the redemption request, but may take up
to seven business days. Redemption proceeds will be sent by wire only to the
bank name designated on the Client Registration Application. The Trust may
suspend the right of redemption or postpone the payment date at times when the
Exchange is closed, or during certain other periods as permitted under the
federal securities laws.
 
  For shareholder protection, a request to change information contained in an
account registration (for example, a request to change the bank designated to
receive wire redemption proceeds) must be received in writing, signed by the
minimum number of persons designated on the Client Registration Application
that are required to effect a redemption, and accompanied by a signature
guarantee from any eligible guarantor institution, as determined in accordance
with the Trust's procedures. Shareholders should inquire as to whether a
particular institution is an eligible guarantor institution. A signature
guarantee cannot be provided by a notary public. In addition, corporations,
trusts, and other institutional organizations are required to furnish evidence
of the authority of the persons designated on the Client Registration
Application to effect transactions for the organization.
 
  Due to the relatively high cost of maintaining small accounts, the Trust
reserves the right to redeem Institutional Class and Administrative Class
shares in any account for their then-current value (which will be promptly
paid to the investor) if at any time, due to redemption by the investor, the
shares in the account do not have a value of at least $100,000. A shareholder
will receive advance notice of a mandatory redemption and will be given at
least 30 days to bring the value of its account up to at least $100,000. This
mandatory redemption policy does not apply to participants in PIMCO Advisors
Portfolio Strategies, a managed product sponsored by PIMCO Advisors.
 
  The Trust agrees to redeem shares of each Fund solely in cash up to the
lesser of $250,000 or 1% of the Portfolio's net assets during any 90-day
period for any one shareholder. In consideration of the best interests of the
remaining shareholders, the Trust reserves the right to pay any redemption
proceeds exceeding this amount in whole or in part by a distribution in kind
of securities held by a Portfolio in lieu of cash. It is highly unlikely that
shares would ever be redeemed in kind. When shares are redeemed in kind, the
redeeming shareholder should expect to incur transaction costs upon the
disposition of the securities received in the distribution.
 
Exchange Privilege
 
  Shares of a Portfolio may be exchanged for shares of the same class of any
other Portfolio or other series of the Trust based on the respective net asset
values of the shares involved. An exchange may be made by following the
redemption procedure described above under "Redemptions by Mail" or, if the
telephone redemption option has been elected, by calling the Trust at 1-800-
927-4648. Shares of a Portfolio may also be exchanged for shares of the same
class of a series of PIMCO Funds: Pacific Investment Management Series.
Shareholders interested in such an exchange may request a prospectus for these
other series by contacting PIMCO Funds: Pacific Investment Management Series
at the same address and telephone number as the Trust.
                                                                   Prospectus
                                                                             29
<PAGE>
 
  Exchanges may be made only with respect to Portfolios or other eligible
series that are registered in the state of residence of the investor or where
an exemption from registration is available. An exchange order is treated the
same for tax purposes as a redemption followed by a purchase and may result in
a capital gain or loss, and special rules may apply in computing tax basis
when determining gain or loss. See "Taxation" in the Statement of Additional
Information.
 
  The Trust reserves the right to refuse exchange purchases if, in the
judgment of the Adviser, the purchase would adversely affect a Portfolio and
its shareholders. In particular, a pattern of exchanges characteristic of
"market-timing" strategies may be deemed by the Adviser to be detrimental to
the Trust or a particular Portfolio. Currently, the Trust limits the number of
"round trip" exchanges an investor may make. An investor makes a "round trip"
exchange when the investor purchases shares of a particular Portfolio,
subsequently exchanges those shares for shares of a different Portfolio or
other PIMCO Fund, and then exchanges back into the originally purchased
Portfolio. The Trust has the right to refuse any exchange for any investor who
completes (by making the exchange back into the shares of the originally
purchased Portfolio) more than six round trip exchanges in any twelve-month
period. Although the Trust will attempt to give shareholders prior notice
whenever it is reasonably able to do so, it may impose additional restrictions
on exchanges at any time.
 
                                NET ASSET VALUE
 
  The net asset values of Institutional Class and Administrative Class shares
of each Portfolio will be determined once on each day on which the Exchange is
open (a "Business Day"), as of the close of regular trading (normally 4:00
p.m., Eastern time) on the Exchange. Net asset value will not be determined on
days on which the Exchange is closed.
 
  The market values of the shares of the Underlying Funds held by the
Portfolios are determined once each Business Day in the same manner as the net
asset values of the Portfolios' shares are determined as described below.
 
  Each Portfolio's liabilities are allocated among its classes. The total of
such liabilities allocated to a class plus that class's distribution and/or
servicing fees and any other expenses specially allocated to that class are
then deducted from the class's proportionate interest in the Portfolio's
assets, and the resulting amount for each class is divided by the number of
shares of that class outstanding to produce the class's "net asset value" per
share. Under certain circumstances, the per share net asset value of the
Administrative Class shares of the Portfolios may be lower than the per share
net asset value of the Institutional Class shares as a result of the daily
expense accruals of the service and/or distribution fees applicable to the
Administrative Class shares. Generally, for Portfolios that pay income
dividends, those dividends are expected to differ over time by approximately
the amount of the expense accrual differential between a particular
Portfolio's classes.
 
                      DIVIDENDS, DISTRIBUTIONS AND TAXES
 
  Shares begin earning dividends on the effective date of purchase, provided
notification deadlines are met. See "Purchase of Shares." Net investment
income from interest and dividends, if any, will be declared and paid to
shareholders of record at least monthly by the 30/70 Portfolio, at least
quarterly by the 60/40 Portfolio and at least annually by the 90/10 Portfolio.
Any net capital gains from the sale of portfolio securities will be
distributed no less frequently than once annually. Net short-term capital
gains may be paid more frequently. Dividend and capital gain distributions of
a Fund will be reinvested in additional shares of that Portfolio unless the
shareholder elects to have them paid in cash. Dividends from net investment
income with respect to Administrative Class shares will be lower than those
paid with respect to Institutional Class shares, reflecting the payment of
service and/or distribution fees by that class.
 
 
30
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
  Each Portfolio intends to qualify as a regulated investment company annually
and to elect to be treated as a regulated investment company under the
Internal Revenue Code of 1986, as amended (the "Code"). As such, a Portfolio
generally will not pay federal income tax on the income and gains it pays as
dividends to its shareholders. In order to avoid a 4% federal excise tax, each
Portfolio intends to distribute each year substantially all of its net income
and gains.
   
  Shareholders subject to U.S. federal income tax will be subject to tax on
dividends received from a Portfolio, regardless of whether received in cash or
reinvested in additional shares. Distributions received by tax-exempt
shareholders will not be subject to federal income tax to the extent permitted
under applicable tax law. All shareholders must treat dividends, other than
capital gain dividends and dividends that represent a return of capital to
shareholders, as ordinary income. In particular, distributions derived from
short-term gains will be treated as ordinary income. Dividends designated by a
Portfolio as capital gain dividends derived from the Portfolio's net capital
gains (that is, the excess of its net long-term capital gains over its net
short-term capital losses) are taxable to shareholders as long-term capital
gain (generally subject to a 20% tax rate for shareholders who are
individuals) except as provided by an applicable tax exemption. Any
distributions that are not from a Portfolio's net investment income or net
capital gain may be characterized as a return of capital to shareholders or,
in some cases, as capital gain. Certain dividends declared in October,
November or December of a calendar year are taxable to shareholders (who
otherwise are subject to tax on dividends) as though received on December 31
of that year if paid to shareholders during January of the following calendar
year. Each Portfolio will advise shareholders annually of the amount and
nature of the dividends paid to them.     
 
  Taxable shareholders should note that the timing of their investment or
redemptions could have undesirable tax consequences. Dividends and
distributions on a Portfolio's shares are generally subject to federal income
tax as described herein to the extent they do not exceed the Portfolio's
realized income and gains, even though such dividends and distributions may
economically represent a return of a particular shareholder's investment. Such
distributions are likely to occur in respect of shares purchased at a time
when the Portfolio's net asset value reflects gains that are either
unrealized, or realized but not distributed. Such realized gains may be
required to be distributed even when a Portfolio's net asset value also
reflects unrealized losses.
 
  A Portfolio's use of a fund-of-funds structure could affect the amount,
timing and character of distributions to shareholders. See "Taxation" in the
Statement of Additional Information.
 
  The preceding discussion relates only to federal income tax; the
consequences under other tax laws may differ. Shareholders should consult
their tax advisers as to the possible application of foreign, state and local
income tax laws to Trust dividends and capital gain distributions. For
additional information relating to the tax aspects of investing in a
Portfolio, see the Statement of Additional Information.
 
                               OTHER INFORMATION
 
Capitalization
 
  The Trust was organized as a Massachusetts business trust on August 24,
1990, and currently consists of twenty-eight portfolios that are operational,
three of which are described in this Prospectus. Other portfolios may be
offered by means of a separate prospectus. The Board of Trustees may establish
additional portfolios in the future. The capitalization of the Trust consists
of an unlimited number of shares of beneficial interest. When issued, shares
of the Trust are fully paid, non-assessable and freely transferable.
                                                                   Prospectus
                                                                             31
<PAGE>
 
  Under Massachusetts law, shareholders could, under certain circumstances, be
held liable for the obligations of the Trust. However, the Second Amended and
Restated Agreement and Declaration of Trust (the "Declaration of Trust") of
the Trust disclaims shareholder liability for acts or obligations of the Trust
and requires that notice of such disclaimer be given in each agreement,
obligation or instrument entered into or executed by the Trust or the
Trustees. The Declaration of Trust also provides for indemnification out of a
Portfolio's property for all loss and expense of any shareholder of that
Portfolio held liable on account of being or having been a shareholder. Thus,
the risk of a shareholder incurring financial loss on account of shareholder
liability is limited to circumstances in which such disclaimer is inoperative
or the Portfolio of which he or she is or was a shareholder is unable to meet
its obligations, and thus should be considered remote.
 
Multiple Classes of Shares
 
  In addition to Institutional Class shares and Administrative Class shares,
the Portfolios also currently offer three additional classes of shares, Class
A, Class B and Class C, through a separate prospectus. This Prospectus relates
only to Institutional Class and Administrative Class shares of the Portfolios.
The other classes of the Portfolios have different sales charges and expense
levels, which will affect performance accordingly. To obtain more information
about the other classes of shares, please call the Distributor at 1-800-426-
0107.
 
  Institutional Class and Administrative Class shares of each Portfolio
represent interests in the assets of that Portfolio, and each class has
identical dividend, liquidation and other rights and the same terms and
conditions, except that expenses related to the distribution and/or
shareholder servicing of Administrative Class shares are borne solely by such
class, and each class may, at the Trustees' discretion, also pay a different
share of other expenses, not including advisory or custodial fees or other
expenses related to the management of the Trust's assets, if these expenses
are actually incurred in a different amount by that class, or if the class
receives services of a different kind or to a different degree than the other
classes. All other expenses are allocated to each class on the basis of the
net asset value of that class in relation to the net asset value of the
particular Portfolio.
 
Voting
 
  Each class of shares of each Portfolio has identical voting rights, except
that each class of shares has exclusive voting rights on any matter submitted
to shareholders that relates solely to that class, and has separate voting
rights on any matter submitted to shareholders in which the interests of one
class differ from the interests of any other class. The Administrative Class
shares have exclusive voting rights with respect to matters pertaining to any
Distribution Plan applicable to that class. These shares are entitled to vote
at meetings of shareholders. Matters submitted to shareholder vote must be
approved by each Portfolio separately except (i) when required by the 1940
Act, shares shall be voted together, and (ii) when the Trustees have
determined that the matter does not affect all Portfolios, then only
shareholders of the Portfolio or Portfolios affected shall be entitled to vote
on the matter. All classes of shares of a Portfolio will vote together, except
with respect to a Distribution Plan or agreement applicable to a class of
shares or when a class vote is required as specified above or otherwise by the
1940 Act. Shares are freely transferable, are entitled to dividends as
declared by the Trustees and, in liquidation of the Trust, are entitled to
receive the net assets of their Portfolio, but not of the other Portfolios or
other series of the Trust. The Trust does not generally hold annual meetings
of shareholders and will do so only when required by law. Shareholders may
remove Trustees from office by votes cast in person or by proxy at a meeting
of shareholders or by written consent. Such a meeting will be called at the
written request of the holders of 10% of the Trust's outstanding shares.
   
  Shares entitle their holders to one vote per share (with proportionate
voting for fractional shares). As of March 10, 1999, the Trust believes that
there were no shareholders of record of 25% or more of the outstanding voting
securities of     
 
32
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
   
any Portfolio. As used in this Prospectus, the phrase "vote of a majority of
the outstanding shares" of a Portfolio (or the Trust) means the vote of the
lesser of: (1) 67% of the shares of the Portfolio (or the Trust) present at a
meeting, if the holders of more than 50% of the outstanding shares are present
in person or by proxy; or (2) more than 50% of the outstanding shares of the
Portfolio (or the Trust).     
 
Performance Information
 
  From time to time the Trust may make available certain information about the
performance of the Institutional Class and Administrative Class shares of some
or all of the Portfolios. Information about a Portfolio's performance is based
on that Portfolio's record to a recent date and is not intended to indicate
future performance. Performance information is computed separately for each
Portfolio's Institutional Class and Administrative Class shares in accordance
with the formulas described below. Because Administrative Class shares bear
the expense of service and/or distribution fees, it is expected that, under
normal circumstances, the level of performance of a Portfolio's Administrative
Class shares will be lower than that of the Portfolio's Institutional Class
shares.
   
  The total return of Institutional Class and Administrative Class shares of
all Portfolios may be included in advertisements or other written material.
When a Portfolio's total return is advertised with respect to its
Institutional Class and Administrative Class shares, it will be calculated for
the past year, the past five years and the past ten years (or if the class has
been offered for a period shorter than one, five or ten years, that period
will be substituted) since the inception of the class, as more fully described
in the Statement of Additional Information. For periods prior to the initial
offering date of Institutional Class and Administrative Class shares of each
Portfolio, total return presentations will be based on the historical
performance of the Portfolio's Class A shares (which are offered in a
different prospectus), restated to reflect that there are no sales charges
associated with Institutional Class or Administrative Class shares. The Class
A performance will also be restated to reflect any different operating
expenses (such as lower administrative fees and/or 12b-1/servicing fee
charges) associated with Institutional Class and Administrative Class shares.
Such a restatement will result in Institutional Class and Administrative Class
performance which is higher than if the Class A performance were not restated
to reflect these lower operating expenses. The Trust's advertisements will
also, to the extent appropriate, show the lower performance figures reflecting
the actual operating expenses incurred by Class A shares for periods prior to
the initial offering date of Institutional Class and Administrative Class
shares. Total return for each class is measured by comparing the value of an
investment in the Portfolio at the beginning of the relevant period to the
redemption value of the investment in the Portfolio at the end of the period
(assuming immediate reinvestment of any dividends or capital gains
distributions at net asset value). Total return may be advertised using
alternative methods that reflect all elements of return, but that may be
adjusted to reflect the cumulative impact of alternative fee and expense
structures.     
 
  Quotations of yield for a Portfolio or class will be based on the investment
income per share (as defined by the SEC) during a particular 30-day (or one-
month) period (including dividends and interest), less expenses accrued during
the period ("net investment income"), and will be computed by dividing net
investment income by the maximum public offering price per share on the last
day of the period.
 
  The Portfolios may also provide current distribution information to their
shareholders in shareholder reports or other shareholder communications, or in
certain types of sales literature provided to prospective investors. Current
distribution information for a particular class of a Portfolio will be based
on distributions for a specified period (i.e., total dividends from net
investment income), divided by the relevant class net asset value per share on
the last day of the period and annualized. Current distribution rates differ
from standardized yield rates in that they represent what a class of a
Portfolio has declared and paid to shareholders as of the end of a specified
period rather than the Portfolio's actual net investment income for that
period.
                                                                   Prospectus
                                                                             33
<PAGE>
 
  The Adviser may also report to shareholders or to the public in
advertisements concerning its performance as adviser to clients other than the
Portfolios, and on its comparative performance or standing in relation to
other money managers. Such comparative information may be compiled or provided
by independent ratings services or by news organizations. Any performance
information, whether related to the Portfolios, the Adviser or an advisory
affiliate of the Adviser, should be considered in light of the Portfolio's
investment objectives and policies, characteristics and quality of the
Portfolios' investments, and the market conditions during the time period
indicated, and should not be considered to be representative of what may be
achieved by the Portfolios in the future.
 
  Investment results of the Portfolios will fluctuate over time, and any
representation of the Portfolios' total return or yield for any prior period
should not be considered as a representation of what an investor's total
return or yield may be in any future period.
 
34
 PIMCO Funds: Multi-Manager Series
<PAGE>
 
 
           --------------------------------------------------------------------
   
PIMCO Funds:
    
           INVESTMENT ADVISER AND ADMINISTRATOR
           PIMCO Advisors L.P., 800 Newport Center Drive, Newport Beach, CA
           92660
   
Multi-Manager
    
           --------------------------------------------------------------------
Series        
           CUSTODIAN     
           Investors Fiduciary Trust Company, 801 Pennsylvania, Kansas City,
           MO 64105
           --------------------------------------------------------------------
              
           TRANSFER AGENT     
              
           National Financial Data Services, 330 West 9th Street, 4th Floor,
           Kansas City, MO 64105     
           --------------------------------------------------------------------
           INDEPENDENT ACCOUNTANTS
           PricewaterhouseCoopers LLP, 1055 Broadway, Kansas City, MO 64105
           --------------------------------------------------------------------
           LEGAL COUNSEL
           Ropes & Gray, One International Place, Boston, MA 02110
           --------------------------------------------------------------------
<PAGE>
 
For More Information

The following documents are or will be available that offer further information
on the Portfolios and other series of PIMCO Funds: Multi-Manager Series.

Annual/Semi-Annual Reports to Shareholders The Trust's annual and semi-annual
reports include a discussion of the market conditions and investment strategies
that significantly affected the Portfolios' performance during its last fiscal
year or other period.

Statement of Additional Information (SAI) The SAI contains additional
information about the Portfolios. A current SAI has been filed with the
Securities and Exchange Commission, and is incorporated into this prospectus by
reference.

To request a free copy of these documents or to make inquiries about the
Portfolios, please write or call:

PIMCO Funds: 
Multi-Manager Series
840 Newport Center Drive 
Suite 300
Newport Beach, CA 92660

Telephone:
1-800-927-4648
1-800-987-4626 (PIMCO Infolink Audio Response Network)

Information about the Trust (including the SAI) can be reviewed and copied at
the Securities and Exchange Commission's Public Reference Room in Washington,
D.C. Information on the operation of the public reference room may be obtained
by calling the Commission at 1-800-SEC-0330. Reports and other information about
the Trust are available on the Commission's Internet site at www.sec.gov, and
copies of that information may be obtained, upon payment of a duplicating fee,
by writing the Public Reference Section of the Commission, Washington, D.C.
20549-6009.

SEC File Number: 811-6161

                                                                       P I M C O
                                                                      ----------
                                                                           FUNDS
                                                                           -----

PIMCO Funds 

840 Newport Center Drive
Suite 300 
Newport Beach, CA 92660


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