PIONEER MONEY MARKET TRUST
485BPOS, 1998-04-29
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     As Filed With The Securities and Exchange Commission on April 29, 1998
                     Registration Nos. 33-13179 and 811-5099

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM N-1A

                                                                 
         REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933       / X /
                                                                 
                  Pre-Effective Amendment No. ___                      /   /
                                                                 
                  Post-Effective Amendment No. 15                      / X /

                                     and/or
                                                                 
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940        /   /
                                                                 
                             Amendment No. 16                          / X /

                        (Check appropriate box or boxes)

                       PIONEER MONEY MARKET TRUST
               (Exact name of registrant as specified in charter)

                60 State Street, Boston, Massachusetts       02109
               (Address of principal executive office)      Zip Code

       Registrant's Telephone Number, including Area Code: (617) 742-7825

                    Joseph P. Barri, Esq., Hale and Dorr LLP,
                        60 State Street, Boston, MA 02109
                     (Name and address of agent for service)

It is proposed that this filing will become effective (check appropriate box)

           ___      immediately upon filing pursuant to paragraph (b)
           _X_      on April 30, 1998 pursuant to paragraph (b)
           ___      60 days after filing pursuant to paragraph (a)(1)
           ___      on [date] pursuant to paragraph (a)(1)
           ___      75 days after filing pursuant to paragraph (a)(2)
           ___      on [date] pursuant to paragraph (a)(2) of Rule 485

Title of Securities: Shares of Beneficial Interest, no par value
                                       
<PAGE>

                           PIONEER CASH RESERVES FUND

            Cross-Reference Sheet Showing Location in Prospectus and
                 Statement of Additional Information Required by
                         Items of the Registration Form

<TABLE>
<CAPTION>
                                                                           Location in Prospectus 
         Form N-1A Item Number                                                or Statement of     
              and Caption                                                  Additional Information 
         ---------------------                                             ---------------------- 
<S>     <C>                                                             <C>
1.      Cover Page.................................................     Prospectus - Cover Page

2.      Synopsis...................................................     Prospectus - Expense Information

3.      Condensed Financial Information............................     Prospectus - Financial Highlights

4.      General Description of
           Registrant..............................................     Prospectus - Investment Objective and
                                                                        Policies; Management of the Trust

5.      Management of the Fund.....................................     Prospectus - Management of the Trust

6.      Capital Stock and Other
           Securities..............................................     Prospectus - Dividends, Distributions and
                                                                        Taxation; Management of the Trust; The Trust

7.      Purchase of Securities
           Being Offered...........................................     Prospectus - How to Buy Fund Shares; How to
                                                                        Exchange Fund Shares; Dividends, Distributions
                                                                        and Taxation

                                     - 1 -
<PAGE>

                                                                           Location in Prospectus 
         Form N-1A Item Number                                                or Statement of     
              and Caption                                                  Additional Information 
         ---------------------                                             ---------------------- 

8.       Redemption or Repurchase...................................      Prospectus - How to Sell Fund Shares; How to
                                                                          Exchange Fund Shares

9.       Pending Legal Proceedings..................................      Not Applicable

10.      Cover Page..................................................     Statement of Additional Information - Cover
                                                                          Page

11.      Table of Contents...........................................     Statement of Additional Information - Cover
                                                                          Page

12.      General Information and History.............................     Statement of Additional Information - Cover
                                                                          Page; Description of Shares

13.      Investment Objectives and Policy............................     Statement of Additional Information -
                                                                          Investment Policies and Restrictions

14.      Management of the Fund......................................     Statement of Additional Information -
                                                                          Management of the Trust; Investment Adviser

15.      Control Persons and Principal
             Holders of Securities...................................     Statement of Additional Information -
                                                                          Management of the Trust

16.      Investment Advisory and
             Other Services..........................................     Statement of Additional Information -
                                                                          Management of the Trust; Investment Adviser;
                                                                          Shareholder Servicing/Transfer Agent;
                                                                          Custodian; Independent Public Accountants



                                     - 2 -
<PAGE>

                                                                           Location in Prospectus 
         Form N-1A Item Number                                                or Statement of     
              and Caption                                                  Additional Information 
         ---------------------                                             ---------------------- 
17.      Brokerage Allocation and
             Other Practices.........................................     Statement of Additional Information -
                                                                          Portfolio Transactions

18.      Capital Stock and Other
             Securities..............................................     Statement of Additional Information -
                                                                          Description of Shares; Certain Liabilities

19.      Purchase Redemption and
             Pricing of Securities
             Being Offered...........................................     Statement of Additional Information -
                                                                          Determination of Net Asset Value; Systematic
                                                                          Withdrawal Plan

20.      Tax Status..................................................     Statement of Additional Information - Tax
                                                                          Status

21.      Underwriters................................................     Statement of Additional Information -
                                                                          Underwriting Agreement and Distribution Plans;
                                                                          Principal Underwriter

22.      Calculation of Performance Data.............................     Statement of Additional Information -
                                                                          Investment Results

23.      Financial Statements........................................     Statement of Additional Information -
                                                                          Financial Statements
</TABLE>
<PAGE>
PIONEER MONEY MARKET TRUST

PART A

PROSPECTUS
<PAGE>
Pioneer                                                           [Pioneer Logo]
Cash Reserves
Fund

Class A, Class B and Class C Shares

Prospectus
   
April 30, 1998
    

   
       Pioneer Cash Reserves Fund (the "Fund") is a money market fund. The
Fund's Class A shares are offered without a sales charge. The Fund's investment
objective is to seek high current income, preservation of capital and liquidity
through investments in high-quality short-term securities. The Fund invests in
money market instruments, including: securities of the United States ("U.S.")
government and its agencies and instrumentalities; certificates of deposit;
corporate commercial paper; and other debt instruments.

       This Prospectus provides information about the Fund that you should know
before investing. Please read and keep it for your future reference. More
information about the Fund is included in the Statement of Additional
Information, dated April 30, 1998, as supplemented or revised from time to time,
which is incorporated into this Prospectus by reference. You may obtain a copy
of the Statement of Additional Information free of charge by calling Shareholder
Services at 1-800-225-6292 or by written request to the Fund at 60 State Street,
Boston, Massachusetts 02109. Other information about the Fund has been filed
with the Securities and Exchange Commission (the "SEC") and is available upon
request and without charge by calling 1-800-225-6292 or through the SEC's
Internet web site (http://www.sec.gov).

       The Fund's yield will fluctuate. Shares in the Fund are not deposits or
obligations of, or guaranteed or endorsed by, any bank, and the shares are not
federally insured by the Federal Deposit Insurance Corporation, the Federal
Reserve Board or any other agency. INVESTMENTS IN THE FUND ARE NEITHER INSURED
NOR GUARANTEED BY THE U.S. GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND
WILL BE ABLE TO MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE.
    


   
<TABLE>
<CAPTION>
        TABLE OF CONTENTS                                        PAGE
        -------------------------------------------------------- -----
<S>     <C>                                                        <C>
I.      EXPENSE INFORMATION ....................................    2
II.     FINANCIAL HIGHLIGHTS ...................................    3
III.    INVESTMENT OBJECTIVE AND POLICIES ......................    4
IV.     MANAGEMENT OF THE TRUST ................................    5
V.      FUND SHARE ALTERNATIVES ................................    6
VI.     SHARE PRICE ............................................    7
VII.    HOW TO BUY FUND SHARES .................................    7
VIII.   HOW TO SELL FUND SHARES ................................   11
IX.     HOW TO EXCHANGE FUND SHARES ............................   12
X.      DISTRIBUTION PLANS .....................................   13
XI.     DIVIDENDS, DISTRIBUTIONS AND TAXATION ..................   14
XII.    SHAREHOLDER SERVICES ...................................   15
         Account and Confirmation Statements ...................   15
         Additional Investments ................................   15
         Automatic Investment Plans ............................   15
         Financial Reports and Tax Information .................   16
         Dividend Options ......................................   16
         Voluntary Tax Withholding .............................   16
         Retirement Plans ......................................   16
         Yield Information .....................................   16
         Telecommunications Device for the Deaf (TDD) ..........   16
         Systematic Withdrawal Plans ...........................   16
         Telephone Transactions ................................   17
         FactFoneSM ............................................   17
XIII.   THE TRUST ..............................................   17
XIV.    INVESTMENT RESULTS .....................................   18
XV.     APPENDIX ...............................................   18
</TABLE>
    

                             ---------------------
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY
OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>

I. EXPENSE INFORMATION

   
     This table is designed to help you understand the charges and expenses that
you, as a shareholder, will bear directly or indirectly when you invest in the
Fund. The table has been restated to reflect the elimination of an expense
limitation in effect during the fiscal year ended December 31, 1997.
    


   
<TABLE>
<CAPTION>
Shareholder Transaction Expenses:            Class A        Class B        Class C
<S>                                            <C>            <C>            <C>
Maximum Initial Sales Charge on
  Purchases (as a percentage of
  offering price) .......................      None           None           None
Maximum Sales Charge on
  Reinvestment of Dividends .............      None           None           None
Maximum Deferred Sales Charge (as a
  percentage of original purchase
  price or redemption proceeds, as
  applicable) ...........................      None           4.00%          1.00%
Redemption Fee(1)........................      None           None           None
Exchange Fee ............................      None           None           None
Annual Operating Expenses (as a
  percentage of average net assets):
Management Fee ..........................      0.40%          0.40%          0.40%
12b-1 Fees ..............................      0.13%          1.00%          1.00%
Other Expenses (including transfer
  agent fee, custodian fees and
  accounting and printing expenses) .....      0.45%          0.38%          0.41%
                                              -----          -----          -----
Total Operating Expenses ................      0.98%          1.78%          1.81%
                                              =====          =====          =====
</TABLE>
    

- ------------
   
(1) Separate fees (currently $10 and $20, respectively) apply to U.S. or
    international wire transfers of redemption proceeds.
    


     Example:

   
     You would pay the following expenses on a $1,000 investment, with or
without redemption at the end of each time period, assuming a 5% annual return,
reinvestment of all dividends and distributions and that the percentage amounts
listed under "Annual Operating Expenses" remain the same each year.
    


   
<TABLE>
<CAPTION>
                                1 Year     3 Years     5 Years     10 Years
                               --------   ---------   ---------   ---------
<S>                              <C>        <C>         <C>         <C>
Class A Shares .............     $10        $31         $ 54        $120
Class B Shares                                                      
  --Assuming complete                                               
    redemption at                                                   
    end of period ..........     $58        $86         $116        $188*
  --Assuming no                                                     
    redemption .............     $18        $56         $ 96        $188*
Class C Shares**                                                    
  --Assuming complete                                               
    redemption at                                                   
    end of period ..........     $28        $57         $ 98        $213
  --Assuming no                                                     
    redemption .............     $18        $57         $ 98        $213
</TABLE>                                                           
    

- ------------
 *Class B shares convert to Class A shares eight years after purchase;
  therefore, Class A expenses are used after year eight. 
**Class C shares redeemed during the first year after purchase are subject to a
  1% contingent deferred sales charge ("CDSC").

   
    
     The example is designed for information purposes only, and should not be
considered a representation of past or future expenses or return. Actual Fund
expenses and return vary from year to year and may be higher or lower than those
shown. 

   
     For further information regarding management fees, Rule 12b-1 fees and
other expenses of the Fund, see "Management of the Trust," "Distribution Plans"
and "How To Buy Fund Shares" in this Prospectus and "Management of the Trust"
and "Underwriting Agreement and Distribution Plans" in the Statement of
Additional Information.

     A sales charge may be applied to exchanges of shares of the Fund for shares
of certain other Pioneer mutual funds. See "How to Exchange Fund Shares." The
Fund's payment of a Rule 12b-1 fee may result in long-term shareholders paying
more than the economic equivalent of the maximum sales charge permitted under
the Conduct Rules of the National Association of Securities Dealers, Inc. 
    


                                       2
<PAGE>

II. FINANCIAL HIGHLIGHTS
   
     The following information has been audited by Arthur Andersen LLP,
independent public accountants. Arthur Andersen LLP's report on the financial
statements of Pioneer Money Market Trust (the "Trust") as of December 31, 1997
appears in the Trust's Annual Report, which is incorporated by reference into
the Statement of Additional Information. The information listed below should be
read in conjunction with the financial statements contained in the Trust's
Annual Report. The Annual Report includes more information about the Fund's
performance and is available free of charge by calling Shareholder Services at
1-800-225-6292. 
    

Pioneer Cash Reserves Fund
Selected Data for a Class A Share Outstanding for Each Period Presented:

   
<TABLE>
<CAPTION>
                                                           For the Year Ended December 31,
                                              -------------------------------------------------------
                                                   1997           1996           1995          1994
                                                --------       --------       --------        -------
<S>                                             <C>            <C>            <C>             <C>
Net asset value, beginning of period ........   $   1.00       $   1.00       $   1.00        $  1.00
                                                --------       --------       --------        -------
Income from investment operations:
 Net investment income ......................   $   0.05       $   0.05       $   0.05        $  0.03
Distributions to shareholders:
 Net investment income ......................      (0.05)         (0.05)         (0.05)         (0.03)
                                                --------       --------       --------        --------
 Net increase in net asset value ............   $   0.00       $   0.00       $   0.00        $  0.00
                                                --------       --------       --------        --------
Net asset value, end of period ..............   $   1.00       $   1.00       $   1.00        $  1.00
                                                ========       ========       ========        ========
Total return* ...............................       4.78%          4.65%          5.17%          3.57%
Ratios/Supplemental Data
Ratio of net expenses to average net
 assets .....................................       0.94%++        0.91%++        0.88%++        0.50%
Ratio of net investment income to
 average net assets .........................       4.62%++        4.50%++        5.00%++        2.59%
Net assets, end of period (in thousands)        $209,041       $189,346       $163,820       $173,195
Ratios assuming no waiver of
 management fees by PMC and no
 reduction for fees paid indirectly:
  Net expenses ..............................       0.98%          1.05%          1.15%          0.65%
  Net investment income .....................       4.58%          4.36%          4.73%          2.44%
Ratios assuming waiver of
 management fees by PMC and
 reduction for fees paid indirectly:
  Net expenses ..............................       0.87%          0.85%          0.82%            --
  Net investment income .....................       4.69%          4.56%          5.06%            --



<CAPTION>
                                                                 For the Year Ended December 31,
                                              --------------------------------------------------------------------
                                                  1993        1992       1991        1990        1989       1988
                                                --------    --------   --------     -------    --------   --------  
<S>                                             <C>         <C>        <C>         <C>         <C>        <C>
Net asset value, beginning of period ........   $  1.00     $  1.00    $  1.00     $   1.00    $  1.00    $  1.00
                                                -------     -------    --------    --------    --------   --------
Income from investment operations:                                                                          
 Net investment income ......................   $  0.02     $  0.03    $  0.05     $   0.07    $  0.08    $  0.07
Distributions to shareholders:                                                                              
 Net investment income ......................     (0.02)      (0.03)     (0.05)       (0.07)     (0.08)     (0.07)
                                                --------    --------   --------    ---------   --------   --------
 Net increase in net asset value ............   $  0.00     $  0.00    $  0.00     $   0.00    $  0.00    $  0.00
                                                --------    --------   --------    ---------   --------   --------
Net asset value, end of period ..............   $  1.00     $  1.00    $  1.00     $   1.00    $  1.00    $  1.00
                                                ========    ========   ========    =========   ========   ========
Total return* ...............................      2.47%       3.06%      5.29%        7.74%      8.80%      7.05%
Ratios/Supplemental Data                                                                                    
Ratio of net expenses to average net                                                                        
 assets .....................................      0.75%       0.81%      0.88%        0.75%      0.82%      0.78%
Ratio of net investment income to                                                                           
 average net assets .........................      2.44%       3.03%      5.23%        7.53%      8.43%      6.91%
Net assets, end of period (in thousands)        $64,841     $59,097    $73,010     $101,120    $80,121    $59,592
Ratios assuming no waiver of
 management fees by PMC and no
 reduction for fees paid indirectly:
  Net expenses ..............................      1.10%       1.01%         +            +          +       0.91%
  Net investment income .....................      2.09%       2.82%         +            +          +       6.77%
Ratios assuming waiver of
 management fees by PMC and
 reduction for fees paid indirectly:
  Net expenses ..............................        --          --         --           --         --         --
  Net investment income .....................        --          --         --           --         --         --
</TABLE>
    

Selected Data for a Class B Share Outstanding for Each Period Presented:

   
<TABLE>
<CAPTION>
                                                              For the Year Ended December 31,             
                                                              -------------------------------    March 31, 1995 to
                                                                   1997           1996           December 31, 1995
                                                                  -----           -----          -----------------
<S>                                                             <C>            <C>                  <C>               
Net asset value, beginning of period ........................   $   1.00       $   1.00             $   1.00       
                                                                ---------      ---------            --------       
Income from investment operations:                                                                                 
 Net investment income ......................................   $   0.04       $   0.04             $   0.03       
Distributions to shareholders from:                                                                                
 Net investment income ......................................      (0.04)         (0.04)               (0.03)    
                                                                ---------      ---------            ----------     
Net asset value, end of period ..............................   $   1.00       $   1.00             $   1.00       
                                                                =========      =========            ==========     
Total return* ...............................................       3.89%          3.82%                3.28%   
Ratios/Supplemental Data                                                                                           
Ratio of net expenses to average net assets .................       1.75%++        1.75%++              1.66%**++
Ratio of net investment income to average net assets ........       3.85%++        3.66%++              4.20%**++
Net assets, end of period (in thousands) ....................   $ 32,477       $ 10,342             $  7,574     
Ratios assuming no waiver of management fees by PMC                                                                
 and no reduction for fees paid indirectly:                                                                        
  Net expenses ..............................................       1.78%          1.88%                1.86%**  
  Net investment income .....................................       3.82%          3.53%                4.00%**  
Ratios assuming waiver of management fees by PMC                                                                   
 and reduction for fees paid indirectly:                                                                    
  Net expenses ..............................................       1.70%          1.67%                1.61%**    
  Net investment income......................................       3.90%          3.74%                4.25%**
</TABLE>                                                                     
    
 ------------
   
 * Assumes initial investment at net asset value at the beginning of each
   period, reinvestment of distributions and the complete redemption of the
   investment at the net asset value at the end of each period.
    
** Annualized.
 + No reduction of fees or expenses in this period.
++ Ratio assuming no reduction for fees paid indirectly.

                                       3

<PAGE>

II. FINANCIAL HIGHLIGHTS (continued)

Selected Data for a Class C Share Outstanding for Each Period Presented:

   
<TABLE>
<CAPTION>
                                                                                                 For the        January 31, 1996
                                                                                                Year Ended             to
                                                                                            December 31, 1997   December 31, 1996
                                                                                           ------------------- ------------------
<S>                                                                                              <C>                 <C>
Net asset value, beginning of period .....................................................       $  1.00             $ 1.00
                                                                                                 -------             ------
Income from investment operations:                                                                                   
 Net investment income ...................................................................       $  0.04             $ 0.03
Distributions to shareholders from:                                                                                  
 Net investment income ...................................................................         (0.04)             (0.03)
                                                                                                 -------             --------
Net asset value, end of period ...........................................................       $  1.00             $ 1.00
                                                                                                 =======             ========
Total return* ............................................................................          3.96%              3.35%
Ratios/Supplemental Data                                                                                           
Ratio of net expenses to average net assets ..............................................          1.79%+             1.84%**+
Ratio of net investment income to average net assets .....................................          3.84%+             3.61%**+
Net assets, end of period (in thousands) .................................................       $ 7,537             $  912
Ratios assuming no waiver of management fees by PMC and no reduction for fees
paid indirectly:
   Net expenses ..........................................................................          1.81%              1.95%**
   Net investment income .................................................................          3.82%              3.50%**
Ratios assuming waiver of management fees by PMC and reduction for fees paid
indirectly:
   Net expenses ..........................................................................          1.62%              1.77%**
   Net investment income..................................................................          4.01%              3.68%**
</TABLE>
    

- -------------------------
   
  *Assumes initial investment at net asset value at the beginning of each
   period, reinvestment of distributions, and the complete redemption of the
   investment at net asset value at the end of each period.
    
** Annualized.
 + Ratio assuming no reduction for fees paid indirectly.

III. INVESTMENT OBJECTIVE AND POLICIES

   
     The investment objective of the Fund is to seek high current income,
preservation of capital and liquidity through investments in high-quality
short-term securities.
    

     The Fund seeks to maintain a constant net asset value of $1.00 per share by
investing in a portfolio of money market instruments maturing within 397 days
and with a dollar-weighted average maturity of 90 days or less.

     There can be no guarantee that the Fund will achieve its investment
objective or that it will be able to maintain a constant $1.00 net asset value
per share.

Suitability

     The Fund is designed to provide a convenient way for individual, corporate
and institutional investors to earn income on their cash reserves, with easy
access to their money and stable principal value.

     Ownership of shares of the Fund also eliminates the bookkeeping and
administrative inconvenience of purchasing money market securities directly.

Investment Policies

     The Fund invests in the following types of high-quality, money market
instruments:

   
     (1) U.S. Government Obligations: Marketable obligations issued or
guaranteed by the U.S. government or any agency or instrumentality thereof.
    


     (2) Bank Obligations: Obligations (including certificates of deposit and
bankers' acceptances) of U.S. banks (including their foreign branches) and
savings and loan associations which at the date of their latest public reporting
had total assets in excess of $1 billion, and obligations of certain smaller
banks and savings and loan institutions satisfying specified investment criteria
(see the Statement of Additional Information for further details).


     (3) Commercial Paper: Commercial paper (short-term unsecured promissory
notes of corporations, including variable amount master demand notes) which at
the date of investment is rated A-1 by Standard & Poor's Ratings Group ("S&P")
or P-1 by Moody's Investors Service, Inc. ("Moody's"), or, if not rated, is
issued by companies having outstanding debt rated AAA or AA by S&P or Aaa or Aa
by Moody's.

   
    

     (4) Short-term Corporate Debt Securities: Corporate debt securities (bonds
and debentures) with no more than 397 days remaining to maturity at date of
settlement and rated AAA or AA by S&P or Aaa or Aa by Moody's.


                                       4
<PAGE>

   
     The Fund may purchase securities carrying fixed rates of return or having
floating or variable interest rates. Floating and variable rate obligations are
generally more stable than fixed-rate obligations because their value is less
affected by changes in interest rate levels. 
    

Additional Information

     In addition to the foregoing policies, the Fund is subject to certain
regulatory requirements. The Fund may purchase only securities that PMC believes
present minimal credit risks and that are rated by the major rating agencies,
such as S&P and Moody's, within the two highest rating categories for short-term
debt obligations or, if unrated, are determined to be of equivalent quality by
PMC. If a security has been assigned different ratings by different rating
agencies, at least two rating agencies must have assigned the highest rating in
order for PMC to rely on that highest rating.


   
     The Fund may not invest more than 5% of its total assets (taken at
amortized cost) in securities issued by or subject to puts from any one issuer
(except U.S. government securities and repurchase agreements collateralized by
such securities). The Fund will not invest more than 5% of its total assets in
securities that, although of high quality, have not been rated in the highest
short-term rating category by at least two rating agencies (or if rated by only
one rating agency, by that rating agency or, if unrated, determined to be of
equivalent quality by PMC), provided that within this 5% limitation, the Fund
will not invest more than the greater of 1% or $1 million of its total assets in
the securities (other than U.S. government securities) of any one issuer.
    


     The Fund may enter into repurchase agreements with approved banks and
broker-dealers for periods not to exceed seven days and only with respect to
U.S. government securities that throughout the period have a value at least
equal to the amount of the loan (including accrued interest).


   
     The Fund will not invest more than 25% of its assets in any one industry,
except that there is no percentage limitation on investments in bank
obligations or U.S. government obligations.
    


     The Fund intends to hold its investments until maturity, but may sell them
prior to maturity for a number of reasons, including: to shorten or lengthen the
average maturity; to increase the yield; to maintain the quality of the
portfolio; or to maintain a stable share value.

     It is the policy of the Fund not to engage in trading for short-term
profits. The Fund will engage in portfolio trading if PMC believes that a
transaction net of costs (including custodian's fees) will contribute to the
achievement of the Fund's investment objective.

     The Fund has no present plans to change its policies with regard to the
types or maturities of securities in which it invests. However, if the Fund
determines that its investment objective can best be achieved by a change in
investment policy or strategy, the Fund may make such changes without
shareholder approval by disclosing them in the Prospectus. The Fund's investment
objective may not be changed without shareholder approval.

     The investment characteristics of U.S. government obligations, bank
obligations, commercial paper and repurchase agreements are described in greater
detail in the Appendix to this Prospectus. The Statement of Additional
Information also provides more information on the above investment strategies,
as well as information on additional investment restrictions, including those
which may not be changed without shareholder approval.

IV. MANAGEMENT OF THE TRUST

   
     The Fund is the sole series of the Trust. The Trust's Board of Trustees has
overall responsibility for management and supervision of the Fund. The Board
meets at least quarterly. By virtue of the functions performed by PMC, the Trust
requires no employees other than its executive officers, all of whom receive
their compensation from PMC or other sources. The Statement of Additional
Information contains the name and general background of each Trustee and
executive officer of the Trust.

     The Fund is managed under a contract with PMC which serves as investment
adviser to the Fund and is responsible for the overall management of the Fund's
business affairs. PMC is a wholly owned subsidiary of The Pioneer Group, Inc.
("PGI"), a publicly-traded Delaware corporation. Pioneer Funds Distributor,
Inc. ("PFD"), an indirect wholly owned subsidiary of PGI, is the principal
underwriter of the Fund.
    

     In addition to the Fund, PMC also manages and serves as the investment
adviser for other mutual funds and is an investment adviser to certain other
institutional accounts. PMC's and PGI's executive offices are located at 60
State Street, Boston, Massachusetts 02109. In an effort to avoid conflicts of
interest with the Fund, the Fund and PMC have adopted a Code of Ethics that is
designed to main-


                                       5
<PAGE>

tain a high standard of personal conduct by directing that all personnel defer
to the interests of the Fund and its shareholders in making personal securities
transactions.


   
     Under the terms of its contract with the Trust, PMC assists in the
management of the Trust and is authorized in its discretion to buy and sell
securities for the account of the Fund. PMC pays all the ordinary operating
expenses, including executive salaries and the rental of office space related to
its services for the Trust, with the exception of the following which are paid
by the Trust: (a) charges and expenses for fund accounting, pricing and
appraisal services and related overhead, including, to the extent such services
are performed by personnel of PMC or its affiliates, office space and facilities
and personnel compensation, training and benefits; (b) the charges and expenses
of auditors; (c) the charges and expenses of any custodian, transfer agent, plan
agent, dividend disbursing agent and registrar appointed by the Trust with
respect to the Fund; (d) issue and transfer taxes, chargeable to the Fund in
connection with securities transactions to which the Fund is a party; (e)
insurance premiums, interest charges, dues and fees for membership in trade
associations, and all taxes and corporate fees payable by the Fund to federal,
state or other governmental agencies; (f) fees and expenses involved in
registering and maintaining registrations of the Fund and/or its shares with the
SEC, state or blue sky securities agencies and foreign countries, including the
preparation of Prospectuses and Statements of Additional Information for filing
with the SEC; (g) all expenses of shareholders' and Trustees' meetings and of
preparing, printing and distributing prospectuses, notices, proxy statements and
all reports to shareholders and to governmental agencies; (h) charges and
expenses of legal counsel to the Trust and the Trustees; (i) distribution fees
paid by the Fund in accordance with Rule 12b-1 promulgated by the SEC pursuant
to the Investment Company Act of 1940, as amended, (the "1940 Act"); (j)
compensation of those Trustees of the Trust who are not affiliated with or
interested persons of PMC, the Trust (other than as Trustees), PGI or PFD; (k)
the cost of preparing and printing share certificates; and (l) interest on
borrowed money, if any. In addition to the expenses described above, the Trust
shall pay all brokers' and underwriting commissions chargeable to the Trust in
connection with securities transactions to which the Fund is a party. 
    


     As compensation for its management services and certain expenses which PMC
incurs, PMC is entitled to a management fee equal to 0.40% per annum of the
Fund's average daily net assets. The fee is normally computed daily and paid
monthly. See "Expense Information" in this Prospectus and "Investment Adviser"
in the Statement of Additional Information.

     John F. Cogan, Jr., Chairman of the Board and President of the Trust and
President and a Director of PGI and of PMC, owned approximately 14% of the
outstanding capital stock of PGI as of the date of this Prospectus.
   

     Certain information technology experts currently predict the possibility of
a widespread failure of computer systems and certain other equipment which will
be triggered on or after certain dates--primarily January 1, 2000--due to a
systemic inability to process date-related information. This scenario, commonly
known as the "Year 2000 Problem," could have an adverse impact on individuals
and businesses including the Fund and other mutual funds and financial
organizations. PMC and its affiliates are taking steps believed to be adequate
to address the Year 2000 Problem with respect to the systems and equipment
controlled by the Fund's investment adviser, broker-dealer and transfer agent.
In addition, other entities providing services to the Fund and its shareholders
are being asked to provide assurances that they have undertaken similar measures
with respect to their systems and equipment. Although PMC is not expecting any
adverse impact to it or its clients from the Year 2000 Problem, it cannot
provide complete assurances that its efforts or the efforts of its key vendors
will be successful. 
    


V. FUND SHARE ALTERNATIVES

     The Fund continuously offers three Classes of shares designated as Class A,
Class B and Class C shares. If you do not specify in your instructions to the
Fund which Class of shares you wish to purchase, exchange or redeem, the Fund
will assume that your instructions apply to Class A shares. See "How to Buy Fund
Shares" for more information on classes of shares.

     Class A Shares. Class A shares may be purchased at net asset value without
a sales charge or commission and are subject to distribution and service fees at
a combined annual rate of up to 0.15% of the Fund's average daily net assets
attributable to Class A shares.

     Class B Shares. If your investment in the Fund is for the long-term, Class
A shares may be more appropriate than Class B shares. Purchases of the Class B
shares of the


                                       6
<PAGE>

Fund may be appropriate if you plan to exchange these shares for the Class B
shares of another Pioneer mutual fund (except Pioneer Short-Term Income Trust or
Pioneer Intermediate Tax-Free Fund, which have lower CDSCs for their Class B
shares). Please consult your investment representative.


   
     Class B shares are sold without an initial sales charge, but are subject to
a CDSC of up to 4% if redeemed within six years. Class B shares are subject to
distribution and service fees at a combined annual rate of 1% of the Fund's
average daily net assets attributable to Class B shares. Your entire investment
in Class B shares is avail-able to work for you from the time you make your
investment, but the higher distribution fee paid by Class B shares will cause
your Class B shares (until conversion) to have a higher expense ratio and to pay
lower dividends, to the extent dividends are paid, than Class A shares. Class B
shares will automatically convert to Class A shares, based on relative net asset
value, eight years after the initial purchase.


     Class C Shares. Class C shares are sold without an initial sales charge,
but are subject to a 1% CDSC if they are redeemed within the first year after
purchase. Class C shares are subject to distribution and service fees at a
combined annual rate of up to 1% of the Fund's average daily net assets
attributable to Class C shares. Your entire investment in Class C shares is
available to work for you from the time you make your investment, but the higher
distribution fee paid by Class C shares will cause your Class C shares to have a
higher expense ratio and to pay lower dividends, to the extent dividends are
paid, than Class A shares. Class C shares have no conversion feature.


     Investment dealers or their representatives may receive different
compensation depending on which Class of shares they sell. Shares may be
exchanged only for shares of the same Class of another Pioneer mutual fund and
shares acquired in the exchange will continue to be subject to any CDSC
applicable to the shares of the Pioneer mutual fund originally purchased. Shares
sold outside the U.S. to persons who are not U.S. citizens may be subject to
different sales charges, CDSCs and dealer compensation arrangements in
accordance with local laws and business practices.
    


VI. SHARE PRICE

   
     The purchase and redemption price of the Fund's shares is equal to the net
asset value ("NAV") per share. The NAV per share of a Class of the Fund is
determined by dividing the value of its assets, less liabilities (expenses and
fees are accrued daily) attributable to that Class, by the number of shares of
that Class outstanding. The Fund's NAV is computed on each day the New York
Stock Exchange (the "Exchange") is open as of the close of regular trading on
the Exchange. 
    

     Securities are valued at amortized cost. Under the amortized cost pricing
method, a portfolio investment is valued at its cost and, thereafter, any
discount or premium is amortized to maturity, regardless of the impact of
fluctuating interest rates on the market value of the investment. Amortized cost
pricing facilitates the maintenance of a $1.00 constant NAV per share, but, of
course, this cannot be guaranteed. All assets of the Fund for which there is no
other readily available valuation method are valued at their fair value as
determined in good faith by the Trustees.


VII. HOW TO BUY FUND SHARES

   
     You may buy Fund shares through broker-dealers who have sales agreements
with PFD. Class A shares may also be purchased directly from PFD. Call
Pioneering Services Corporation ("PSC") at 1-800-225-6292 if you need
assistance. 
    

     The minimum initial investment is $1,000 for Class A, Class B and Class C
shares except as specified below. The minimum initial investment is $100 for
Class A accounts being established to utilize monthly bank drafts, government
allotments, payroll deduction and other similar automatic investment plans.
Separate minimum investment requirements apply to retirement plans and to
telephone and wire orders placed by broker-dealers; no sales charges or minimum
requirements apply to the reinvestment of dividends or capital gains
distributions.

     The minimum subsequent investment is $100 for Class A shares and $500 for
Class B and Class C shares except that the subsequent minimum investment amount
for Class B and Class C share accounts may be as little as $100 if an automatic
investment plan is established (see "Automatic Investment Plans").

     Dividends on Purchases. The Fund seeks to be fully invested at all times in
order to accrue dividends to your account each day. To be eligible for each
day's dividend accrual, each direct purchase of shares in the Fund must be
converted to same day funds. Same day funds are monies credited to State Street
Bank and Trust Company's


                                       7
<PAGE>

("State Street Bank") account with the Federal Reserve Bank of Boston.

   
     If your purchase order is received in good order prior to the close of the
Exchange (normally, 4:00 p.m. Eastern time), it will be executed at the NAV next
determined after your purchase payment is converted into same day funds or other
immediately available funds and your shares will begin earning dividends on the
next business day. When you purchase shares by check, your shares will begin
earning dividends when the check is converted into same day funds, normally
within two business days.

     On any day that State Street Bank, the Custodian (as defined below) or the
Exchange closes early, or, in PMC's judgment closing early is in the best
interest of the Fund's shareholders, the Fund reserves the right to advance the
time by which transactions (purchases, sales or exchanges) must be received in
order to be eligible for that day's dividends. 
    

Making Your Investment

   
     All purchases of Class B and Class C shares, except exchanges from other
Pioneer mutual funds, can only be processed through broker-dealers who have
sales agreements with PFD.

     By Mail. (Class A shares only) Send your check or negotiable bank draft,
drawn on a U.S. bank and payable in U.S. dollars to the Fund, to PSC at P.O.
Box 9014, Boston, Massachusetts 02205-9014 the above address. Cash and third
party checks will not be accepted. Your payment should be accompanied by a
completed Account Application or other instructions indicating your account
number.
    

     If you pay by check or draft, State Street Bank will normally make same day
funds available to the Fund, and the Fund will accept the order, on the first
business day after receipt. Checks drawn on some other banks may take more than
one day to be collected and share purchases will not be made until same day
funds are available to the Fund.

   
     By Telephone. Your account is automatically authorized to have the
telephone purchase privilege unless you indicate otherwise on your Account
Application or by writing to PSC. The telephone purchase option may be used to
purchase additional shares for an existing Pioneer mutual fund account; it may
not be used to establish a new account. Proper account identification will be
required for each telephone purchase. A maximum of $25,000 per account may be
purchased by telephone each day. The telephone purchase privilege is available
to Individual Retirement Accounts ("IRAs") but may not be available to other
types of retirement plan accounts. Call PSC for more information.


     You are strongly urged to consult with your financial representative prior
to requesting a telephone purchase. To purchase shares by telephone, you must
establish your bank account of record by completing the appropriate section of
your Account Application or an Account Options Form. PSC will electronically
debit the amount of each purchase from this predesignated bank account.
Telephone purchases may not be made for 30 days after the establishment of your
bank of record or any change to your bank information.


     Telephone purchases will be priced at the net asset value plus any
applicable sales charge next determined after PSC's receipt of a telephone
purchase instruction and receipt of good funds (usually three days after the
purchase instruction). You may always elect to deliver purchases to PSC by mail.
See "Telephone Transactions" for additional information.
    


     By Wire. (Class A shares only) When you wish to wire money to an existing
Pioneer mutual fund account, call PSC at 1-800-225-6292 to obtain complete
instructions. You will be asked to instruct your bank to transmit same day funds
by wire through the Federal Reserve banking system. The wiring instructions must
include the following information:


<TABLE>
   <S>                       <C>
   Receiving Bank            State Street Bank and Trust Company
   Address                   225 Franklin Street
                             Boston MA 02101
   ABA Transit               011000028
   For Further Credit To     Shareholder Name
                             Existing Pioneer Account #
                             Pioneer Cash Reserves Fund
</TABLE>

Federal funds directed to the Custodian must be pre-approved by calling PSC at
1-800-225-6292. To be sure that a bank wire is accepted on the same day it is
sent, you should give the Fund notice of your intention to make such investment
as early in the day as possible since the process of making a wire transfer may
take several hours and may be affected by your bank's internal procedures
concerning wire transfers. Your bank may charge for sending same day funds on
your behalf. State Street Bank presently does not charge for receipt of wired
same day funds, but reserves the right to charge for this service in the future.


                                       8
<PAGE>

Selecting a Class of Shares

     Class A Shares. You may buy Class A shares at NAV without the imposition of
an initial sales charge by mail, by telephone or by wire as described above.


     Class B Shares. You may buy Class B shares at NAV without the imposition of
an initial sales charge; however, Class B shares redeemed within six years of
purchase will be subject to a CDSC at the rates shown in the table below. The
charge will be assessed on the amount equal to the lesser of the current market
value or the original purchase cost of the shares being redeemed. No CDSC will
be imposed on increases in account value above the initial purchase price,
including shares derived from the reinvestment of dividends or capital gains
distributions.

     The amount of the CDSC, if any, will vary depending on the number of years
from the time of purchase until the time of redemption of Class B shares. For
the purpose of determining the number of years from the time of any purchase,
all payments during a quarter will be aggregated and deemed to have been made on
the first day of that quarter. In processing redemptions of Class B shares, the
Fund will first redeem shares not subject to any CDSC, and then shares held
longest during the six-year period. As a result, you will pay the lowest
possible CDSC.
   

     The CDSC for Class B shares subject to a CDSC upon redemption will be
determined as follows:
    


<TABLE>
<CAPTION>
                                      CDSC as a Percentage of Dollar
Year Since Purchase                       Amount Subject to CDSC
- --------------------------------   ------------------------------------
<S>                                                <C>
First ..........................                    4.0%
Second .........................                    4.0%
Third ..........................                    3.0%
Fourth .........................                    3.0%
Fifth ..........................                    2.0%
Sixth ..........................                    1.0%
Seventh and thereafter .........                   none
</TABLE>

   
     Class B shares will automatically convert into Class A shares at the
beginning of the calendar quarter that is eight years after the purchase date,
except as noted below. Class B shares acquired by exchange from Class B shares
of another Pioneer mutual fund will convert into Class A shares based on the
date of the initial purchase and will be subject to the CDSC applicable to the
shares of the fund originally purchased. Class B shares acquired through
reinvestment of distributions will convert into Class A shares based on the date
of the initial purchase to which such shares relate. For this purpose, Class B
shares acquired through reinvestment of distributions will be attributed to
particular purchases of Class B shares in accordance with such procedures as the
Trustees may determine from time to time. The conversion of Class B shares to
Class A shares is subject to the continuing availability of a ruling from the
Internal Revenue Service ("IRS"), which the Fund has obtained, or an opinion of
counsel that such conversions will not constitute taxable events for federal tax
purposes. There can be no assurance that such ruling will continue to be in
effect at the time any particular conversion would occur. The conversion of
Class B shares to Class A shares will not occur if such ruling is no longer
available and, therefore, Class B shares would continue to be subject to higher
expenses than Class A shares for an indeterminate period.

     Class C Shares. You may buy Class C shares at NAV without the imposition of
an initial sales charge; however, Class C shares redeemed within one year of
purchase will be subject to a CDSC of 1%. The charge will be assessed on the
amount equal to the lesser of the current market value or the original purchase
cost of the shares being redeemed. No CDSC will be imposed on increases in
account value above the initial purchase price, including shares derived from
the reinvestment of dividends or capital gains distributions. Class C shares do
not convert to any other Class of Fund shares. 
    


     For the purpose of determining the time of any purchase, all payments
during a quarter will be aggregated and deemed to have been made on the first
day of that quarter. In processing redemptions of Class C shares, the Fund will
first redeem shares not subject to any CDSC, and then shares held for the
shortest period of time during the one-year period. As a result, you will pay
the lowest possible CDSC.


     Proceeds from the CDSC are paid to PFD and are used in whole or in part to
defray PFD's expenses related to providing distribution-related services to the
Fund in connection with the sale of Class C shares, including the payment of
compensation to broker-dealers.


   
     Waiver or Reduction of Contingent Deferred Sales Charge. The CDSC on Class
B shares may be waived or reduced for non-retirement accounts if: (a) the
redemption results from the death of all registered owners of an account (in the
case of an UGMA, an UTMA or a trust account, waiver applies upon the death of
all beneficial owners) or a total and permanent disability (as defined in 
    


                                       9
<PAGE>

Section 72 of the Internal Revenue Code of 1986, as amended (the "Code") of all
registered owners occurring after the purchase of the shares being redeemed or
(b) the redemption is made in connection with limited automatic redemptions as
set forth in "Systematic Withdrawal Plans" (limited in any year to 10% of the
value of the account in the Fund at the time the withdrawal plan is
established).

   
     The CDSC on Class B shares may be waived or reduced for retirement plan
accounts if: (a) the redemption results from the death or a total and permanent
disability as defined in Section 72 of the Code, occurring after the purchase of
the shares being redeemed of a shareholder or participant in an
employer-sponsored retirement plan; (b) the distribution is to a participant in
an IRA, 403(b) or employer-sponsored retirement plan, is part of a series of
substantially equal payments made over the life expectancy of the participant or
the joint life expectancy of the participant and his or her beneficiary or as
scheduled periodic payments to a participant (limited in any year to 10% of the
value of the participant's account at the time the distribution amount is
established; a required minimum distribution due to the participant's attainment
of age 701/2 may exceed the 10% limit only if the distribution amount is based
on plan assets held in Pioneer mutual funds); (c) the distribution is from a
401(a) or 401(k) retirement plan and is a return of excess employee deferrals or
employee contributions or a qualifying hardship distribution as defined by the
Code or results from a termination of employment (limited with respect to a
termination to 10% per year of the value of the plan's assets in the Fund as of
the later of the prior December 31 or the date the account was established
unless the plan's assets are being rolled over to or reinvested in the same
class of shares of a Pioneer mutual fund subject to the CDSC of the shares
originally held); (d) the distribution is from an IRA, 403(b) or
employer-sponsored retirement plan and is to be rolled over to or reinvested in
the same class of shares in a Pioneer mutual fund and which will be subject to
the applicable CDSC upon redemption; (e) the distribution is in the form of a
loan to a participant in a plan which permits loans (each repayment of the loan
will constitute a new sale which will be subject to the applicable CDSC upon
redemption); or (f) the distribution is from a qualified defined contribution
plan and represents a participant's directed transfer (provided that this
privilege has been pre-authorized through a prior agreement with PFD regarding
participant directed transfers). 
    

     The CDSC on Class C shares and on any Class A shares subject to a CDSC may
be waived or reduced as follows: (a) for automatic redemptions as described in
"Systematic Withdrawal Plans" (limited to 10% of the value of the account); (b)
if the redemption results from the death or a total and permanent disability (as
defined in Section 72 of the Code) occurring after the purchase of the shares
being redeemed of a shareholder or participant in an employer-sponsored
retirement plan; (c) if the distribution is part of a series of substantially
equal payments made over the life expectancy of the participant or the joint
life expectancy of the participant and his or her beneficiary; or (d) if the
distribution is to a participant in an employer-sponsored retirement plan and is
(i) a return of excess employee deferrals or contributions, (ii) a qualifying
hardship distribution as defined by the Code, (iii) from a termination of
employment, (iv) in the form of a loan to a participant in a plan which permits
loans, or (v) from a qualified defined contribution plan and represents a
participant's directed transfer (provided that this privilege has been
pre-authorized through a prior agreement with PFD regarding participant directed
transfers).

     The CDSC on any shares subject to a CDSC may be waived or reduced for
either non-retirement or retirement plan accounts if the redemption is made
pursuant to each Fund's right to liquidate or involuntarily redeem shares in a
shareholder's account. The CDSC on any shares subject to a CDSC will not be
applicable if the selling broker-dealer elects, with PFD's approval, to waive
receipt of the commission normally paid at the time of the sale.


     Broker-Dealers. Class B and Class C shares may only be purchased through a
securities broker or dealer. You may purchase Class A shares of the Fund through
a securities broker or dealer or directly from PFD. A broker or dealer may
charge for this service. If you do not have a securities broker or dealer, PSC
can refer you to one.


   
     An order for any Class of Fund shares received by PFD from a broker-dealer
prior to the close of regular trading on the Exchange is confirmed at the price
appropriate for that Class next determined after the order is received. It is
the responsibility of broker-dealers to transmit orders so that they will be
received by PFD prior to its close of business (usually 5:30 p.m. Eastern time).
    


     General. The Fund reserves the right in its sole discretion to withdraw
all or any part of the offering of shares when, in the judgment of the Fund's
management, such


                                       10
<PAGE>

withdrawal is in the best interest of the Fund. An order to purchase shares is
not binding on, and may be rejected by, PFD until it has been confirmed in
writing by PFD and payment has been received.


     Conditions of Purchase. The Fund reserves the right to reject any purchase
or exchange. If a purchase is canceled because your check is returned unpaid,
you are responsible for any loss the Fund incurs and a separate charge may be
made for any unpaid check. The Fund may redeem shares from your account(s) to
cover these costs and charges and you may be restricted from making future
purchases of shares of any of the Pioneer mutual funds.


VIII. HOW TO SELL FUND SHARES

     You can arrange to sell (redeem) Fund shares on any day the Exchange is
open by selling either some or all of your shares to the Fund by mail, by
telephone or by facsimile ("fax"). Class A share accounts may also sell by check
when properly authorized in advance.

     You may sell your shares either through your broker-dealer or directly to
the Fund. Please note the following:

[bullet] If you are selling shares from a retirement account, other than an
         IRA, you must make your request in writing (except for exchanges to
         other Pioneer mutual funds which can be requested by phone or in
         writing). Call 1-800- 622-0176 for more information.
[bullet] If you are selling shares from a non-retirement account or IRA, you may
         use any of the methods described below.

     Your shares will be sold at the share price next calculated (expected to be
a constant $1.00) after your order is received in good order, less any
applicable CDSC. Subject to the limitation described above for shares purchased
by check, sale proceeds are normally mailed or wired the next business day but
in any event not later than seven days after your order is received in good
order. The Fund reserves the right to withhold payment of the sale proceeds
until checks received by the Fund in payment for the shares being sold have
cleared, which may take up to 15 calendar days from the purchase date.

   
     By Check. (Class A Shares Only) If requested, the Fund will establish a
checking account for a Class A shareholder(s) with The First National Bank of
Omaha (the "First National Bank"). Please allow 1 to 2 weeks for receipt of your
supply of personalized checks. Checks may be drawn for not less than $500 nor
more than $250,000, payable to anyone. When a check is presented to First
National Bank for payment, it will cause the Fund to redeem, at the net asset
value next determined, a sufficient number of the shareholder's shares to cover
the check. A shareholder receives the daily dividends declared on his or her
shares until the day the check clears. Sale proceeds for shares originally
purchased by check may be held until checks received by the Fund in payment for
the shares being sold have cleared, which may take up to 15 calendar days from
the purchase date. 
    


     The checking account is subject to First National Bank's rules and
regulations governing checking accounts. If there is an insufficient number of
shares in a shareholder's account when a check is presented to First National
Bank for payment, the check will be returned. Since the aggregate value of a
shareholder's account in the Fund changes each day because of the daily
dividend, a shareholder should not attempt to withdraw the full amount in his or
her account by using a check. The checkwriting privilege is not available for
Class B and Class C share accounts. In addition, checkwriting is generally not
available for retirement plan accounts or accounts subject to backup withholding
(see "Dividends, Distributions and Tax Status" and "Voluntary Tax Withholding").


   
     In Writing. You may sell your shares by delivering a written request,
signed by all registered owners, and in good order to PSC at P.O. Box 9014
Boston, Massachusetts 02205-9014, however, you must use a written request,
including a signature guarantee, to sell your shares if any of the following
applies:

 [bullet] you wish to sell over $100,000 worth of shares,
    
 [bullet] your account registration or address has changed within the last 30
          days,
 [bullet] the check is not being mailed to the address on your account (address
          of record),
 [bullet] the check is not being made out to the account owners, or
 [bullet] the sale proceeds are being transferred to a Pioneer mutual fund
          account with a different registration.


     Your request should include your name, the Fund's name, your Fund account
number, the Class of shares to be redeemed, the dollar amount or number of
shares to be redeemed, and any other applicable requirements as described below.
Unless instructed otherwise, PSC will send the proceeds of the sale to the
address of record.


                                       11
<PAGE>

Fiduciaries or corporations are required to submit additional documents. For
more information, contact PSC at 1-800-225-6292.

   
     Written requests will not be processed until they are received in good
order by PSC. Good order means that there are no outstanding claims or requests
to hold redemptions on the account, any certificates are endorsed by the record
owner(s) exactly as the shares are registered and the signature(s) are
guaranteed by an eligible guarantor. You should be able to obtain a signature
guarantee from a bank, broker, dealer, credit union (if authorized under state
law), securities exchange or association, clearing agency or savings
association. A notary public cannot provide a signature guarantee. Signature
guarantees are not accepted by fax. The Fund may waive the signature guarantee
requirement for redemption requests of $100,000 or less provided that the
redemption proceeds are directed to the shareholder(s) of record at the address
of record.

     By Telephone or by Fax. Your account is automatically authorized to have
the telephone redemption privilege unless you indicate otherwise on your Account
Application or by writing to the PSC. Proper account identification will be
required for each telephone redemption. You may redeem up to $100,000 of your
shares by telephone or fax and receive the proceeds by check or bank wire or
electronic funds transfer. The redemption proceeds must be made payable exactly
as the account is registered. To receive the proceeds by check: the check must
be sent to the address of record which must not have changed in the last 30
days. To receive the proceeds by bank wire or by electronic funds transfer: the
proceeds must be sent to your bank address of record which must have been
properly pre-designated either on your Account Application or on an Account
Options Form and which must not have changed in the last 30 days. To redeem by
fax, send your redemption request to 1-800-225-4240. The telephone redemption
option is not available to retirement plan accounts, except IRAs. You may always
elect to deliver redemption instructions to PSC by mail. See "Telephone
Transactions" below. Telephone and fax redemptions will be priced as described
above. You are strongly urged to consult with your financial representative
prior to requesting a telephone redemption.

     A redemption order received by telephone or fax in proper form by PSC prior
to the close of the Exchange (usually, 4:00 p.m. Eastern time) on any business
day becomes effective as of 4:00 p.m. that day, and shares so redeemed will
receive that day's dividend. Proceeds of such a redemption will normally be
mailed or wired the next business day. State Street Bank charges a fee for
wiring funds; the fee will be deducted from the amount redeemed.

     Selling Shares Through Your Broker-Dealer. The Fund has authorized PFD to
act as its agent in the repurchase of shares of the Fund from qualified
broker-dealers and reserves the right to terminate this procedure at any time.
Your broker-dealer must receive your request and transmit it to PFD before PFD's
close of business to receive the next determined redemption price. Your
broker-dealer is responsible for providing all necessary documentation to PFD
and may charge you for its services. 
    

     Small Accounts. The minimum account value is $500. If you hold shares of
the Fund in an account with a net asset value of less than the minimum required
amount due to redemptions or exchanges, the Fund may redeem the shares held in
this account at net asset value if you have not increased the net asset value of
the account to at least the minimum required amount within six months of notice
by the Fund to you of the Fund's intention to redeem the shares.

     General. The Fund and First National Bank each reserve the right at any
time to terminate, suspend or change the terms of or impose fees on any
redemption method described in this Prospectus, except redemption by mail.
Redemptions may be suspended or payment postponed during any period in which any
of the following conditions exist: the Exchange is closed or trading on the
Exchange is restricted; an emergency exists as a result of which disposal by the
Fund of securities owned by it is not reasonably practicable or it is not
reasonably practicable for the Fund to fairly determine the value of the net
assets of its portfolio; or the SEC, by order, so permits.



IX. HOW TO EXCHANGE FUND SHARES

     Written Exchanges. You may exchange your shares by sending a letter of
instruction to PSC. Your letter should include your name, the name of the
Pioneer mutual fund out of which you wish to exchange and the name of the
Pioneer mutual fund into which you wish to exchange, your fund account
number(s), the Class of shares to be exchanged and the dollar amount or number
of shares to be exchanged. Written exchange requests must be signed by all
record owner(s) exactly as the shares are registered.


                                       12
<PAGE>

     Telephone Exchanges. Your account is automatically authorized to have the
telephone exchange privilege unless you indicate otherwise on your Account
Application or by writing to the Fund. Proper account identification will be
required for each telephone exchange. Telephone exchanges may not exceed
$500,000 per account per day. Each telephone exchange request, whether by voice
or by FactFone-, will be recorded. You are strongly urged to consult with your
financial representative prior to requesting a telephone exchange. See
"Telephone Transactions" below.

   
     Automatic Exchanges. You may automatically exchange shares from one Pioneer
mutual fund account for shares of the same Class in another Pioneer mutual fund
account on a monthly or quarterly basis. The accounts must have identical
registrations and the originating account must have a minimum balance of $5,000.
The exchange will be effective on the day of the month designated on your
Account Application or Account Options form. 
    


     General. Exchanges must be at least $1,000. Shares of the Fund acquired
through an exchange from another Pioneer mutual fund or through reinvestment of
dividends or capital gains distributions, may be exchanged at net asset value
for the same class of shares in any other Pioneer mutual fund. Shares of the
Fund acquired by direct purchase may be exchanged for the same class of any
other Pioneer mutual fund at net asset value plus any applicable sales charge.
Not all Pioneer mutual funds offer more than one Class of shares. A new Pioneer
mutual fund account opened through an exchange must have a registration
identical to that on the original account.


     Shares which would normally be subject to a CDSC upon redemption will not
be charged the applicable CDSC at the time of an exchange. Shares acquired in an
exchange will be subject to the CDSC of the shares originally held. For purposes
of determining the amount of any applicable CDSC, the length of time you have
owned the shares acquired by exchange will be measured from the date you
acquired the original shares and will not be affected by any subsequent
exchange.


   
     Exchange requests received by PSC before 4:00 p.m. Eastern time will be
effective on that day if the requirements above have been met and they will be
eligible for that day's dividend. PSC will process exchanges only after
receiving an exchange request in good order. There are currently no fees or
sales charges, other than those described above, imposed at the time of an
exchange. An exchange of shares may be made only in states where legally
permitted. For federal and (generally) state income tax purposes, an exchange is
considered to be a sale of the shares of the Fund exchanged and a purchase of
shares in another Pioneer mutual fund. Therefore, an exchange could result in a
gain or loss on the shares sold, depending on the tax basis of these shares and
the timing of the transaction, and special tax rules may apply.
    

     You should consider the differences in objectives and policies of the
Pioneer mutual funds, as described in each fund's current prospectus, before
making any exchange. For the protection of the Fund's performance and
shareholders, the Fund and PFD reserve the right to refuse any exchange request
or restrict, at any time without notice, the number and/or frequency of
exchanges to prevent abuses of the exchange privilege. Such abuses may arise
from frequent trading in response to short-term market fluctuations, a pattern
of trading by an individual or group that appears to be an attempt to "time the
market," or any other exchange request which, in the view of management, will
have a detrimental effect on the Fund's portfolio management strategy or its
operations. In addition, the Fund and PFD reserve the right to charge a fee for
exchanges or to modify, limit, suspend or discontinue the exchange privilege
with notice to shareholders as required by law.


X. DISTRIBUTION PLANS

     The Trust, on behalf of the Fund, has adopted a Plan of Distribution for
each Class of shares (the "Class A Plan," "Class B Plan," and "Class C Plan") in
accordance with Rule 12b-1 under the 1940 Act, pursuant to which certain
distribution and service fees are paid.

     Pursuant to the Class A Plan, the Fund reimburses PFD its actual
expenditures to finance any activity primarily intended to result in the sale of
Class A shares or to provide services to holders of Class A shares, provided the
categories of expenses for which reimbursement is made are approved by the
Trust's Board of Trustees. As of the date of this Prospectus, the Board of
Trustees has approved the following categories of expenses for Class A shares of
the Fund: (i) a service fee to be paid to qualified broker-dealers in an amount
not to exceed 0.15% per annum of the Fund's average daily net assets
attributable to Class A shares and (ii) reimbursement to PFD for expenses
incurred in providing services to Class A shareholders and supporting
broker-dealers and other organiza-


                                       13
<PAGE>

tions (such as banks and trust companies) in their efforts to provide such
services. Banks are currently prohibited under the Glass-Steagall Act from
providing certain underwriting or distribution services. If a bank was
prohibited from acting in any capacity or providing any of the described
services, management would consider what action, if any, would be appropriate.

   
     Expenditures of the Fund pursuant to the Class A Plan are accrued daily and
may not exceed 0.15% of the Fund's average daily net assets attributable to
Class A shares. Distribution expenses of PFD are expected to substantially
exceed the distribution fees paid by the Fund in a given year. The Class A Plan
may not be amended to increase materially the annual percentage limitation of
average net assets which may be spent for the services described therein without
approval of the Class A shareholders of the Fund.
    

     Both the Class B Plan and the Class C Plan provide that the Fund will pay a
distribution fee at the annual rate of 0.75% of the Fund's average daily net
assets attributable to the applicable Class of shares and will pay PFD a service
fee at the annual rate of 0.25% of the Fund's average daily net assets
attributable to that Class of shares. The distribution fee is intended to
compensate PFD for its distribution services to the Fund. The service fee is
intended to be additional compensation for personal services and/or account
maintenance services with respect to Class B and Class C shares. PFD also
receives the proceeds of any CDSC imposed on the redemption of Class B and Class
C shares.

   
     Commissions of 4%, equal to 3.75% of the amount invested and a first year's
service fee equal to 0.25% of the amount invested in Class B shares, are paid to
broker-dealers who have sales agreements with PFD. PFD may advance to dealers
the first year service fee at a rate up to 0.25% of the purchase price of such
shares and, as compensation therefore, PFD may retain the service fee paid by
the Fund with respect to such shares for the first year after purchase. Dealers
will become eligible for additional service fees with respect to such shares
commencing in the 13th month following the purchase. Commissions of up to 1% of
the amount invested in Class C shares, consisting of 0.75% of the amount
invested and a first year's service fee of 0.25% of the amount invested, are
paid to broker-dealers who have sales agreements with PFD. PFD may advance to
dealers the first year service fee at a rate up to 0.25% of the purchase price
of such shares and, as compensation therefore, PFD may retain the service fee
paid by the Fund with respect to such shares for the first year after purchase.
Commencing in the 13th month following the purchase of Class C shares, dealers
will become eligible for additional annual distribution fees and service fees of
up to 0.75% and 0.25%, respectively, of the net asset value of such shares.
    

     When a broker-dealer sells Class B or Class C shares and elects, with PFD's
approval, to waive its right to receive the commission normally paid at the time
of the sale, PFD may cause all or a portion of the distribution fees described
above to be paid to the broker-dealer.

     Dealers may from time to time be required to meet certain criteria in order
to receive service fees. PFD or its affiliates are entitled to retain all
service fees payable under the Class B or Class C Plan for which there is no
dealer of record or for which qualification standards have not been met as
partial consideration for personal services and/or account maintenance services
performed by PFD or its affiliates for shareholder accounts.

XI. DIVIDENDS, DISTRIBUTIONS AND TAXATION

     The Fund has elected to be treated, has qualified and intends to qualify
each year as a "regulated investment company" under Subchapter M of the Code so
that it will not pay federal income tax on income and capital gains distributed
to shareholders as required under the Code.

   
     Under the Code, the Fund will be subject to a nondeductible 4% federal
excise tax on a portion of its undistributed ordinary income and capital gains
if it fails to meet certain distribution requirements with respect to each
calendar year. The Fund intends to make distributions in a timely manner and
accordingly does not expect to be subject to the excise tax.

     At 4:00 p.m. Eastern time each business day, the Fund will declare
substantially all of its net investment income (consisting of earned interest
income less expenses) as a dividend to its shareholders of record as of 12:00
noon Eastern time. Shareholders begin earning dividends on the first business
day after the Fund is credited with same day funds. However, investors whose
payments are wired to and received by the Trust's Custodian in federal funds by
12:00 noon, Eastern time, will receive the dividend declared that day. Unless
you specify otherwise on your Account Application, all distributions will be
automatically reinvested in additional full and fractional shares of the same
class of the Fund. 
    


                                       14
<PAGE>
   
     Each month's distributions from net investment income will be paid on the
last business day of the month. Short-term capital gains distributions, if any,
may be paid with the daily dividend. For federal income tax purposes, all
distributions will normally be taxable to the Fund's shareholders as ordinary
income, whether taken in cash or reinvested in shares. Dividends from income
and/or capital gains may also be paid at such other times as may be necessary
for the Fund to avoid federal income or excise tax. The Fund's dividends and
distributions will not qualify for any dividends-received deduction available to
corporate shareholders.
    

     Dividends and other distributions paid to individuals and other non-exempt
payees will be subject to 31% backup withholding of federal income tax if the
Fund is not provided with the shareholder's correct taxpayer identification
number and certification that the number is correct and that the shareholder is
not subject to backup withholding or the Fund receives notice from the Internal
Revenue Service ("IRS") or a broker that such withholding applies. Please refer
to the Account Application for additional information.

   
     The description above relates only to U.S. federal income tax consequences
for shareholders who are U.S. persons, i.e., U.S. citizens or residents or U.S.
corporations, partnerships, trusts or estates and who are subject to U.S.
federal income tax. A state income (and possibly local income and/or intangible
property) tax exemption is generally available to the extent the Fund's
distributions are derived from interest on (or, in the case of intangible
property taxes, the value of its shares is attributable to) certain U.S.
government obligations, provided in some states that certain concentration,
designation, reporting or other requirements are satisfied. The Fund will not
attempt to and may not satisfy all such requirements in all states. Non-U.S.
shareholders and tax-exempt shareholders are subject to different tax treatment
that is not described above. Shareholders should consult their own tax advisors
regarding state, local and other applicable tax laws, including the effect of
recent federal tax legislation, in their particular circumstances.
    


XII. SHAREHOLDER SERVICES

   
     PSC is the shareholder services and transfer agent for shares of the Trust.
PSC, a Massachusetts corporation, is a wholly-owned subsidiary of PGI. PSC's
offices are located at 60 State Street, Boston, Massachusetts 02109. Inquiries
to PSC should be mailed to Shareholder Services, Pioneering Services
Corporation, P.O. Box 9014, Boston, Massachusetts 02205-9014. Brown Brothers
Harriman & Co. (the "Custodian") serves as the custodian of the Trust's
portfolio securities. The principal address of the mutual fund division of the
Custodian is 40 Water Street, Boston, Massachusetts 02109.
    

Account and Confirmation Statements

   
     PSC maintains accounts for shareholders and all transactions are recorded
in these accounts. Confirmation statements showing the details of transactions
are sent to shareholders as transactions occur, except Automatic Investment Plan
transactions which are confirmed quarterly. The Pioneer Combined Account
Statement, mailed quarterly, is available to all shareholders who have more than
one Pioneer mutual fund account.

     Shareholders whose shares are held in the name of an investment
broker-dealer or other party will not normally have an account with the Fund and
might not be able to utilize some of the services available to shareholders of
record. Examples of services which might not be available are purchases,
exchanges or redemptions of shares by mail or telephone, automatic reinvestment
of dividends and capital gains distributions, withdrawal plans, Letters of
Intent, rights of accumulation and newsletters. 
    

     Additional Investments. You may add to your account by sending a check
(minimum of $100 for Class A shares and $500 for Class B and Class C shares) to
PSC (account number and Class of shares should be clearly indicated). The bottom
portion of a confirmation statement may be used as a remittance slip to make
additional investments. Additions to your account, whether by check or through a
Pioneer Investomatic Plan, are invested in full and fractional shares of the
Fund at the applicable offering price in effect as of the close of regular
trading on the Exchange on the day of receipt.

   
     Automatic Investment Plans. You may arrange for regular automatic
investments of $100 or more through government/military allotments, payroll
deduction or through a Pioneer Investomatic Plan. A Pioneer Investomatic Plan
provides for a monthly or quarterly investment by means of a pre-authorized
electronic funds transfer from your bank account. Pioneer Investomatic Plan
investments are voluntary, and you may discontinue your plan at any time or
change your plan elections for the dollar amount, frequency or investment date
by calling PSC at 1-800-225-6292, or by sending a written request to Share- 
    


                                       15
<PAGE>

   
holder Services, Pioneering Services Corporation, P.O. Box 9014, Boston,
Massachusetts 02205-9014. A change to your bank information must be made in
writing on an Account Options Form. You should allow up to five business days
for PSC to make changes to an established plan. PSC acts as agent for the
purchaser, the broker-dealer and PFD in maintaining these plans.
    

Financial Reports and Tax Information

     As a shareholder, you will receive financial reports at least
semi-annually. In January of each year, the Fund will mail to you information
about the tax status of dividends and distributions.

Dividend Options

    Regular Reinvestment. Dividends are automatically reinvested in additional
   shares of the same class of the Fund in which you maintain an investment
   unless you instruct otherwise.

    Check. You may elect (in writing) to receive monthly dividend checks. You
   may also direct that dividend checks be paid to another person or sent to
   another address (other than the one on file for your account), although if
   you make either designation after you have opened your account, a signature
   guarantee signed by all registered account owners must accompany your
   instructions.

    If you elect to receive dividends in cash and a distribution check issued to
   you is returned by the U.S. Postal Service as not deliverable or a
   distribution check remains uncashed for six months or more, the amount of the
   check may be reinvested in your account. Such additional shares will be
   purchased at the then current net asset value. Furthermore, the distribution
   option on the account will automatically be changed to the reinvestment
   option until such time as you request a different option by writing to PSC.

   
    Directed Dividends. You may elect (in writing) to have the dividends paid by
   one Pioneer mutual fund account invested in a second Pioneer mutual fund
   account of the same class. The value of this second account must be at least
   $1,000 ($500 for Pioneer Fund or Pioneer II). Invested dividends may be in
   any amount, and there are no fees or charges for this service. Retirement
   plan shareholders may only direct dividends to accounts with identical
   registrations.
    

    Direct Deposit. If you have elected to take distributions, whether dividends
   or dividends and capital gains, in cash, or have established a Systematic
   Withdrawal Plan, you may choose to have those cash payments deposited
   directly into your savings, checking or NOW bank account. You may establish
   this service by completing the appropriate section on the Account Application
   when opening a new account or the Account Options Form for an existing
   account.


Voluntary Tax Withholding

     You may request (in writing) that PSC withhold 28% of the dividends and
capital gains distributions paid from your account (before any reinvestment) and
forward the amount withheld to the IRS as a credit against your federal income
taxes. This option is not available for retirement plan accounts or for accounts
subject to backup withholding.


Retirement Plans

   
     Interested persons should contact the Retirement Plans Department of PSC at
1-800-622-0176 for information relating to Pioneer's tax-deferred retirement
plans for individuals, businesses and tax-exempt organizations. The Account
Application accompanying this Prospectus should not be used to establish such
plans. Separate applications are required. 
    


Yield Information
     Yield information may be obtained by telephone 1-800-225-4321. Yield
information is updated each weekday and is based on the annualized yield over
the immediately preceding seven days, determined with a formula established by
the SEC. See "Investment Results" below. Yields are not fixed and will vary with
changes in the income and expenses of the Fund.


Telecommunications Device for the Deaf (TDD)
   
     If you have a hearing disability and access to TDD keyboard equipment, you
can call our TDD number toll-free at 1-800-225-1997, weekdays from 8:30 a.m. to
5:30 p.m. Eastern time, to contact our telephone representatives with questions
about your account.
    


Systematic Withdrawal Plans

     If your account has a total value of at least $10,000 you may establish a
Systematic Withdrawal Plan ("SWP") providing for fixed payments at regular
intervals. Withdrawals from Class B and Class C share accounts are limited to
10% of the value of the account at the time the SWP is implemented. See "Waiver
or Reduction of Contingent Deferred Sales Charge" for more information.
Periodic


                                       16
<PAGE>

checks of $50 or more will be sent to you monthly or quarterly. Payments can be
made either by check or electronic transfer to a bank account designated by you.
You may also direct that withdrawal checks be paid to another person, although
if you make this designation after you have opened your account, a signature
guarantee must accompany your instructions.


     You may obtain additional information by calling PSC at 1-800-225-6292 or
by referring to the Statement of Additional Information.


   
Telephone Transactions

     Your account is automatically authorized to have telephone transaction
privileges unless you indicate otherwise on your Account Application or by
writing to PSC. You may purchase, sell or exchange Fund shares by telephone. For
personal assistance, call 1-800-225-6292 between 8:00 a.m. and 9:00 p.m. Eastern
time on weekdays. See "Share Price," "How to Sell Fund Shares," and "How to
Exchange Fund Shares" for more information. Computer-assisted transactions may
be available to shareholders who have pre-recorded certain bank information (see
FactFone(SM)). You are strongly urged to consult with your financial
representative prior to requesting any telephone transaction. To confirm that
each transaction instruction received by telephone is genuine, PSC will record
each telephone transaction, require the caller to provide the personal
identification number ("PIN") for the account and send you a written
confirmation of each telephone transaction. Different procedures may apply to
accounts that are registered to non-U.S. citizens or that are held in the name
of an institution or in the name of an investment broker-dealer or other third
party. If reasonable procedures, such as those described above, are not
followed, the Fund may be liable for any loss due to unauthorized or fraudulent
instructions. The Fund may implement other procedures from time to time. In all
other cases, neither the Fund, PSC or PFD will be responsible for the
authenticity of instructions received by telephone, therefore, you bear the risk
of loss for unauthorized or fraudulent telephone transactions.
    


     During times of economic turmoil or market volatility or as a result of
severe weather or a natural disaster, it may be difficult to contact the Fund by
telephone to institute a redemption or exchange. You should communicate with the
Fund in writing if you are unable to reach the Fund by telephone.

FactFone(SM)

   
     FactFone(SM) is an automated inquiry and telephone transaction system
available to Pioneer shareholders by dialing 1-800-225-4321. FactFone(SM) allows
you to obtain current information on your Pioneer mutual fund accounts and to
inquire about the prices and yields of all publicly available Pioneer mutual
funds. In addition, you may use FactFone(SM) to make computer-assisted telephone
purchases, exchanges and redemptions from your Pioneer accounts if you have
activated your PIN. Telephone purchases and redemptions require the
establishment of a bank account of record. You are strongly urged to consult
with your financial representative prior to requesting any telephone
transaction. Shareholders whose accounts are registered in the name of a
broker-dealer or other third party may not be able to use FactFone(SM). See "How
to Buy Fund Shares," "How to Exchange Fund Shares," "How to Sell Fund Shares"
and "Telephone Transactions" Call PSC for assistance.
    


XIII. THE TRUST

     The Fund is the only series of the Trust, an open-end, management
investment company (commonly referred to as a mutual fund), organized as a
Massachusetts business trust on March 31, 1987 and reorganized as a Delaware
business trust on March 30, 1995. The Trust has authorized an unlimited number
of shares of beneficial interest. As an open-ended investment management
investment company, the Trust continuously offers its shares to the public and
under normal circumstances must redeem its shares upon the demand of any
shareholder at net asset value. See "How to Sell Fund Shares." The Trust is not
required, and does not intend, to hold annual shareholder meetings, although
special meetings may be called for the purpose of electing or removing Trustees,
changing fundamental investment restrictions or approving a management contract.


     The Trust reserves the right to create and issue additional series of
shares in addition to the Fund. The Trustees have the authority, without
shareholder approval, to classify and reclassify the shares of the Fund or any
additional series of the Trust, into one or more classes. The shares of a series
participate equally in earnings, dividends and assets of the particular series,
except to the extent the rights of a particular class of shares may differ from
those of another class or classes. As of the date of this Prospectus, the
Trustees have authorized the issu-


                                       17
<PAGE>

ance of three classes of shares of the Fund, designated Class A, Class B and
Class C. The shares of each class represent an interest in the same portfolio of
investments of the Fund. Each class has equal rights as to voting, redemption,
dividends and liquidation, except that each class bears different distribution
and transfer agent fees and may bear other expenses properly attributable to the
particular class. Class A, Class B and Class C shareholders have exclusive
voting rights with respect to Rule 12b-1 distribution plans adopted by holders
of those shares in connection with the distribution of shares.

   
     In addition to the requirements under Delaware law, the Declaration of
Trust provides that a shareholder of the Fund may bring a derivative action on
behalf of the Fund only if the following conditions are met: (a) shareholders
eligible to bring such derivative action under Delaware law who hold at least
10% of the outstanding shares of the Fund, or 10% of the outstanding shares of
the series or class to which such action relates, shall join in the request for
the Trustees to commence such action; and (b) the Trustees must be afforded a
reasonable amount of time to consider such shareholder request and investigate
the basis of such claim. The Trustees shall be entitled to retain counsel or
other advisers in considering the merits of the request and shall require an
undertaking by the shareholders making such request to reimburse the Fund for
the expense of any such advisers in the event that the Trustees determine not to
bring such action.

     When issued and paid for in accordance with the terms of the Prospectus and
Statement of Additional Information, shares of the Fund are fully paid and
non-assessable by the Fund. Shares will remain on deposit with the Fund's
transfer agent and certificates will not be issued. 
    


XIV INVESTMENT RESULTS

     From time to time, the Fund may include in advertisements or other
communications to existing or proposed shareholders its respective "yield" and
"effective yield." The "yield" is computed by dividing the Fund's net investment
income per share attributable to the appropriate class during a base period of
seven days (which period will be stated in the communication) by the net asset
value per share for the appropriate class of the Fund on the last day of such
seven-day period. The Fund's net investment income per share is determined by
dividing net investment income during the base period by the average number of
shares for the appropriate class of the Fund entitled to receive dividends
during the base period. The Fund's seven-day yield for the appropriate class is
then annualized by a computation that assumes that the Fund's net investment
income is earned for a one-year period at the same rate as during the seven-day
base period. The "effective yield" is calculated similarly, except that income
is assumed to be reinvested. The "effective yield" will be slightly higher than
the "yield" because of the compounding effect of the assumed reinvestment.

   
     The yield of the Fund will vary from time to time depending on market
conditions, the composition of the Fund's portfolio and operating expenses.
These factors and possible differences in the methods used in calculating yields
should be considered when comparing performance information published for other
investment companies and other investment vehicles. Yield quotations should also
be considered relative to the risks associated with the Fund's investment
objective and policies. At any time in the future, yield quotations may be
higher or lower than past yield quotations, and there can be no assurance that
any historical yield quotation will continue in the future.

     The Fund may also include comparative performance information in
advertising or marketing its shares. This performance information may include
data from Lipper Analytical Services, Inc., Donoghue's Money Fund Report or
other industry publications. 
    

     For more information regarding the computation of yield, see the Statement
of Additional Information.

XV. APPENDIX

     Some of the terms used in this Prospectus are described below.

     "Bank Obligations" include certificates of deposit which are negotiable
certificates evidencing the indebtedness of a commercial bank to repay funds
deposited with it for a definite period of time (usually from 14 days to one
year) at a stated interest rate. Bankers' acceptances are credit instruments
evidencing the obligation of a bank to pay a draft which has been drawn on it by
a customer. These instruments reflect the obligation both of the bank and of the
drawer to pay the face amount of the instrument upon maturity. Time deposits are
non-negotiable deposits maintained in a banking institution for a specified
period of time. The Fund generally purchases time deposits with a maturity of
the following business day. Time deposits with a maturity of two business days
or more will be considered to be illiquid for purposes of the Fund's investment
restrictions.


                                       18
<PAGE>

     "Commercial Paper" consists of short-term (usually from 1 to 270 days)
unsecured promissory notes issued by corporations in order to finance their
current operations. The Fund may invest only in commercial paper rated A-1 by
S&P or P-1 by Moody's. The ratings A-1 and P-1 are the highest commercial paper
ratings assigned by S&P and Moody's. Commercial paper which is not rated is not
necessarily of lower quality than that which is rated, but may be less
marketable and therefore provide a higher yield.

     "Money Market" refers to the marketplace composed of the financial
institutions which handle the purchase and sale of liquid, short-term,
high-grade debt instruments. The money market is not a single entity, but
consists of numerous separate markets, each of which deals in a different type
of short-term debt instrument. These include U.S. government obligations,
commercial paper, bank obligations, municipal securities, and other debt
instruments, generally referred to as money market instruments.

     "Repurchase Agreements" are transactions by which the Fund purchases a
security and simultaneously commits to resell that security to the seller at an
agreed upon price on an agreed upon date within a number of days (usually not
more than seven) from the date of purchase. The resale price reflects the
purchase price plus an agreed upon market rate of interest which is unrelated to
the coupon rate or maturity of the purchased security. A repurchase agreement
involves the obligation of the seller to pay the agreed upon price, which
obligation is in effect secured by the value (at least equal to the amount of
the agreed upon resale price and marked to market daily) of the underlying
security. Whether a repurchase agreement is the purchase and sale of a security
or a collateralized loan has not been definitely established for purposes other
than the application of the federal statutory provisions exempting U.S.
government obligations from state taxation (for which purpose a repurchase
agreement is treated as a collateralized loan). This might become an issue in
the event of the bankruptcy of the other party to the transaction. While it is
not possible to eliminate all risk from these transactions (particularly the
possibility of a decline in the market value of the underlying securities, as
well as delay and costs to the Fund in connection with bankruptcy proceedings),
it is the policy of the Trust to enter into repurchase agreements only with
banks and broker dealers approved by the Board of Trustees of the Trust and only
with respect to U.S. government securities which throughout the period have a
value at least equal to the amount of the loan (including accrued interest). It
is also the policy of the Board of Trustees to evaluate on a periodic basis the
creditworthiness of the parties with which the Fund engages in repurchase
agreements.


     "U.S. Government Obligations" are debt securities (including bills, notes,
and bonds) issued by the U.S. Treasury or issued by an agency or instrumentality
of the U.S. government which is established under the authority of an Act of
Congress. Such agencies or instrumentalities include, but are not limited to,
the Federal National Mortgage Association, the Small Business Administration,
the Government National Mortgage Association, and the Federal Home Loan Banks.
Although all obligations of agencies and instrumentalities are not direct
obligations of the U.S. Treasury, payment of the interest and principal on these
obligations is generally backed directly or indirectly by the U.S. government.
This support can range from the backing of the full faith and credit of the
United States (U.S. Treasury securities and, for example, securities issued by
the Small Business Administration and the Government National Mortgage
Association) to the backing solely of the issuing instrumentality itself
(securities issued by the Federal National Mortgage Association and the Federal
Home Loan Banks). In the case of obligations not backed by the full faith and
credit of the United States, the Trust must look principally to the agency
issuing or guaranteeing the obligation for ultimate repayment and may not be
able to assert a claim against the United States itself in the event the agency
or instrumentality does not meet its commitments.


                                       19
<PAGE>

Pioneer Cash Reserves Fund
60 State Street
Boston, Massachusetts 02109

OFFICERS
JOHN F. COGAN, JR., Chairman and President
DAVID D. TRIPPLE, Executive Vice President
SHERMAN B. RUSS, Vice President
WILLIAM H. KEOUGH, Treasurer
JOSEPH P. BARRI, Secretary


INVESTMENT ADVISER
PIONEERING MANAGEMENT CORPORATION


PRINCIPAL UNDERWRITER
PIONEER FUNDS DISTRIBUTOR, INC.


CUSTODIAN
BROWN BROTHERS HARRIMAN & CO.


INDEPENDENT PUBLIC ACCOUNTANTS
ARTHUR ANDERSEN LLP


LEGAL COUNSEL
HALE AND DORR LLP


SHAREHOLDER SERVICES AND TRANSFER AGENT
PIONEERING SERVICES CORPORATION
60 State Street
Boston, Massachusetts 02109
Telephone: 1-800-225-6292


SERVICE INFORMATION
If you would like information on the following, please call:
Existing and new accounts, prospectuses,
 applications, service forms and
 FactFoneSM telephone transactions............................. 1-800-225-6292
   
Automated fund yields, automated prices and
 account information........................................... 1-800-225-4321
    
Retirement plans............................................... 1-800-622-0176
Toll-free fax.................................................. 1-800-225-4240
   
Telecommunications Device for the Deaf (TDD)................... 1-800-225-1997
Visit our website........................................ www.pioneerfunds.com
    











   
0498-5121
    
[c]Pioneer Funds Distributor, Inc.


[Pioneer Logo]



Pioneer
Cash Reserves
Fund


Class A, Class B and Class C Shares
Prospectus
   
April 30, 1998
    

<PAGE>
                           PIONEER MONEY MARKET TRUST

                                     PART B

                      STATEMENT OF ADDITIONAL INFORMATION
<PAGE>
                                                             
                           PIONEER MONEY MARKET TRUST
                           Pioneer Cash Reserves Fund

                                 60 State Street
                           Boston, Massachusetts 02109

                       STATEMENT OF ADDITIONAL INFORMATION
                       Class A, Class B and Class C Shares

   
                                 April 30, 1998

         This  Statement of  Additional  Information  is not a  Prospectus,  but
should be read in  conjunction  with the  Prospectus  dated  April 30, 1998 (the
"Prospectus")  of Pioneer  Cash  Reserves  Fund (the  "Fund") as amended  and/or
supplemented  from time to time.  The Fund is one series of Pioneer Money Market
Trust (the "Trust").  A copy of the Prospectus can be obtained free of charge by
calling Shareholder Services at 1-800-225-6292 or by written request to the Fund
at 60 State Street,  Boston,  Massachusetts 02109. The most recent Annual Report
to Shareholders  is attached to this Statement of Additional  Information and is
hereby incorporated in the Statement of Additional Information by reference.

                                TABLE OF CONTENTS
                                                                
                                                                  Page

1.    Investment Policies and Restrictions...............          2
2.    Management of the Trust............................          3
3.    Investment Adviser.................................          7
4.    Underwriting Agreement and Distribution Plans......          8
5.    Shareholder Servicing/Transfer Agent...............         10
6.    Custodian..........................................         11
7.    Principal Underwriter..............................         11
8.    Independent Public Accountants.....................         11
9.    Portfolio Transactions.............................         12
10.   Tax Status.........................................         12
11.   Description of Shares..............................         14
12.   Certain Liabilities................................         15
13.   Determination of Net Asset Value...................         15
14.   Systematic Withdrawal Plan.........................         16
15.   Investment Results.................................         17
16.   Financial Statements...............................         18

Appendix  A - - Description of Commercial Paper Ratings..         19
Appendix  B - - Performance Statistics...................         20
Appendix  C - - Other Pioneer Information................         33
    

                THIS STATEMENT OF ADDITIONAL INFORMATION IS NOT A
                PROSPECTUS AND IS AUTHORIZED FOR DISTRIBUTION TO
                    PROSPECTIVE INVESTORS ONLY IF PRECEDED OR
                     ACCOMPANIED BY AN EFFECTIVE PROSPECTUS.


<PAGE>



1.       INVESTMENT POLICIES AND RESTRICTIONS
   
         The Prospectus identifies the Fund's investment objective and principal
investment policies. Additional investment policies and a further description of
some of the policies  described  in the  Prospectus  are set forth  below.  This
Statement  of  Additional  Information  should be read in  conjunction  with the
Prospectus.  Capitalized  terms not otherwise  defined  herein have the meanings
given to them in the Prospectus.
    
         The following  policies and limitations  supplement  those discussed in
the  Prospectus.  Whenever an investment  policy or limitation  states a maximum
percentage  of the Fund's  assets that may be  invested in any  security or sets
forth a policy regarding  quality  standards,  such standard or other limitation
shall be determined  immediately after and as a result of the Fund's investment.
Accordingly,  any later increase or decrease  resulting from a change in values,
net assets or other  circumstances will not be considered in determining whether
the investment complies with the Fund's investment objectives and policies.

         Certificates of Deposit. The Fund may invest in certificates of deposit
of large domestic banks and savings and loan associations  (i.e., banks which at
the time of their most recent annual  financial  statements show total assets in
excess of $1 billion), including foreign branches of such domestic banks, and of
smaller banks as described  below.  The Fund will not invest in  certificates of
deposit of foreign banks.

         Investment in  certificates  of deposit  issued by foreign  branches of
domestic  banks  involves  investment  risks that are different in some respects
from those  associated  with  investment in  certificates  of deposit  issued by
domestic  banks,  including  the possible  imposition  of  withholding  taxes on
interest  income,  the possible  adoption of foreign  governmental  restrictions
which might  adversely  affect the  payment of  principal  and  interest on such
certificates of deposit, or other adverse political or economic developments. In
addition,  it might be more difficult to obtain and enforce a judgment against a
foreign branch of a domestic bank.

         Although the Fund's  investment  adviser  recognizes that the size of a
bank  is  important,  this  fact  alone  is not  necessarily  indicative  of its
creditworthiness. The Fund may invest in certificates of deposit issued by banks
and  savings  and loan  institutions  which had at the time of their most recent
annual financial  statements total assets not in excess of $1 billion,  provided
that (i) the principal amounts of such certificates of deposit are insured by an
agency  of the U.S.  government,  (ii) at no time  will the Fund  hold more than
$100,000  principal  amount of  certificates of deposit of any one such bank and
(iii) at the time of  acquisition,  no more than 10% of the Fund's assets (taken
at current value) are invested in  certificates  of deposit of such banks having
total assets not in excess of $1 billion.
   
         Investment Restrictions. The following numerical list sets forth all of
the  fundamental   investment   restrictions   applicable  to  the  Fund.  These
restrictions  cannot be changed without the  affirmative  vote of a majority (as
defined in the 1940 Act) of the Fund's outstanding voting securities.
    
         The Fund may not:

         (1) except with respect to  investments  in obligations of (a) the U.S.
government,  its agencies,  authorities  or  instrumentalities  and (b) domestic
banks,  purchase  any security if, as a result (i) more than 5% of the assets of
the Fund would be in the securities of any one issuer,  or (ii) more than 25% of
its assets would be in a particular industry;

         (2) borrow money,  except from banks for  extraordinary  purposes or to
meet redemptions in amounts not exceeding 33 1/3% of its total assets (including
the amount borrowed). The Fund does not intend to borrow money during the coming
year;

         (3) make short sales of securities;

         (4) purchase securities on margin;

         (5) write,  purchase or otherwise invest in any put, call,  straddle or
spread  option or buy or sell real  estate,  commodities  or  commodity  futures
contracts or invest in oil, gas or mineral exploration or development programs;

         (6) make  loans to any  person,  except by (a) the  purchase  of a debt
obligation  in  which  the Fund is  permitted  to  invest  and (b)  engaging  in
repurchase agreements;

         (7) purchase the securities of other investment companies or investment
trusts,  unless  they  are  acquired  as  part  of a  merger,  consolidation  or
acquisition of assets;

         (8)  act  as an  underwriter,  except  as it  may  be  deemed  to be an
underwriter in a sale of restricted securities;

         (9)  invest in  companies  for the  purpose  of  exercising  control or
management; or

         (10) issue  senior  securities,  except  that the  issuance of multiple
classes of shares, in accordance with a statute, regulation or order of the SEC,
shall not constitute the issuance of a senior security.

The term "person" as used in fundamental  investment  restriction no. 6 includes
institutions as well as individuals
   
         In  addition,  in order to  comply  with  certain  state  statutes  and
non-fundamental  policies of the Fund, the Fund will not (i) pledge, mortgage or
hypothecate its portfolio  securities if at the time of such action the value of
the  securities so pledged,  mortgaged or  hypothecated  would exceed 10% of the
value  of the  Fund,  (ii)  commit  more  than  10% of its  assets  to  illiquid
investments,  such as repurchase agreements that mature in more than seven days,
or (iii) buy or sell real  estate,  except  that the Fund may  acquire  or lease
office  space for its own use,  invest in  securities  of issuers that invest in
real estate or interests therein,  invest in securities that are secured by real
estate  or  interests  therein,  invest  in real  estate  limited  partnerships,
purchase  and sell  mortgage-related  securities  and hold and sell real  estate
acquired by the Fund as a result of the  ownership  of  securities.  Policies in
this paragraph may be changed by the Trustees  without  shareholder  approval or
notification.
    
         See the  Prospectus for a discussion of certain  additional  regulatory
requirements applicable to the Fund.

2.        MANAGEMENT OF THE TRUST
   
         3. The Trust's Board of Trustees  provides broad  supervision  over the
affairs of the Fund.  The officers of the Trust are  responsible  for the Fund's
operations.  The Trustees and executive  officers of the Trust are listed below,
together  with  their  principal  occupations  during  the past five  years.  An
asterisk  indicates those Trustees who are interested persons of the Fund within
the meaning of the 1940 Act.

JOHN F. COGAN, JR.*, Chairman of the Board, President and Trustee,
DOB:  June 1926
         President, Chief Executive Officer and a Director of The Pioneer Group,
Inc.  ("PGI");  Chairman  and a Director of  Pioneering  Management  Corporation
("PMC") and Pioneer  Funds  Distributor,  Inc.  ("PFD");  Director of Pioneering
Services Corporation ("PSC"),  Pioneer Capital Corporation ("PCC"); Pioneer Real
Estate Advisors,  Inc., Pioneer Forest,  Inc.,  Pioneer Explorer,  Inc., Pioneer
Management   (Ireland)   Ltd.   ("PMIL")   and  Closed   Joint   Stock   Company
"Forest-Starma";  President and Director of Pioneer Metals and Technology,  Inc.
("PMT"),  Pioneer  International  Corp.  ("PIntl"),  Pioneer First Russia,  Inc.
("First Russia") and Pioneer Omega,  Inc.  ("Omega");  Chairman of the Board and
Director of Pioneer Goldfields Limited ("PGL") and Teberebie Goldfields Limited;
Chairman of the  Supervisory  Board of Pioneer Fonds  Marketing,  GmbH,  Pioneer
First  Polish  Investment  Fund Joint Stock  Company,  S.A.  and  Pioneer  Czech
Investment Company, A.S.; Chairman,  President and Trustee of all of the Pioneer
mutual funds;  Director of Pioneer  Global Equity Fund Plc,  Pioneer Global Bond
Fund Plc,  Pioneer DM Cashfonds Plc,  Pioneer  European Equity Fund Plc, Pioneer
Central & Eastern  Europe  Fund Plc and  Pioneer US Real  Estate  Fund Plc;  and
Partner, Hale and Dorr LLP (counsel to PGI and the Fund).

MARY K. BUSH, Trustee, DOB:  April 1948
4201 Cathedral Avenue, NW, Washington, DC  20016
         President,  Bush &  Co.,  an  international  financial  advisory  firm;
Director  and  Trustee  of  Mortgage  Guaranty  Insurance  Corporation,  Novecon
Management Company,  Hoover Institution,  Folger Shakespeare  Library,  March of
Dimes,  Project 2000,  Inc.  (not-for-profit  educational  organization),  Small
Enterprise  Assistance Fund and Wilberforce  University;  Advisory Board Member,
Washington Mutual Investors Fund, a registered  investment company;  and Trustee
of all the Pioneer mutual funds, except Pioneer Variable Contracts Trust.

RICHARD H. EGDAHL, M.D., Trustee, DOB:  December 1926
Boston University Health Policy Institute, 53 Bay State Road, Boston, MA  02115
         Alexander Graham Bell Professor of Health Care Entrepreneurship, Boston
University;  Professor of Management,  Boston  University  School of Management;
Professor of Public Health, Boston University School of Public Health; Professor
of Surgery, Boston University School of Medicine;  University Professor,  Boston
University;  Director,  Boston  University  Health  Policy  Institute and Boston
University Program for Health Care Entrepreneurship;  Director, CORE (management
of workers'  compensation  and disability costs - NASDAQ);  Director,  WellSpace
(provider  of  complementary  health  care);  Trustee,  Boston  Medical  Center;
Honorary  Trustee,  Franciscan  Children's  Hospital;  and Trustee of all of the
Pioneer mutual funds.

MARGARET B.W. GRAHAM, Trustee, DOB:  May 1947
The Keep, P.O. Box 110, Little Deer Isle, ME  04650
         Founding Director,  The Winthrop Group, Inc. (consulting firm); Manager
of Research  Operations,  Xerox Palo Alto  Research  Center,  from 1991 to 1994;
Professor of Operations  Management  and  Management of Technology and Associate
Dean,  Boston  University School of Management from 1989 to 1993; and Trustee of
all the Pioneer mutual funds, except Pioneer Variable Contracts Trust.

JOHN W. KENDRICK, Trustee, DOB:  July 1917
6363 Waterway Drive, Falls Church, VA  22044
         Professor Emeritus,  George Washington University;  Director,  American
Productivity and Quality Center; Adjunct Scholar, American Enterprise Institute;
and  Trustee  of  all of the  Pioneer  mutual  funds,  except  Pioneer  Variable
Contracts Trust.

MARGUERITE A. PIRET, Trustee, DOB:  May 1948
One Boston Place, Suite 2635, Boston, MA  02108
         President,  Newbury,  Piret & Company,  Inc.  (merchant  banking firm);
Trustee  of Boston  Medical  Center;  Member of the  Board of  Governors  of the
Investment Company Institute; and Trustee of all of the Pioneer mutual funds.

DAVID D. TRIPPLE*, Trustee and Executive Vice President, DOB:  February 1944
         Executive  Vice  President  and a  Director  of PGI;  President,  Chief
Investment  Officer and a Director of PMC;  Director of PFD, PCC,  PIntl,  First
Russia,  Omega, Pioneer SBIC Corporation  ("Pioneer SBIC"), PMIL, Pioneer Global
Equity Fund Plc, Pioneer Global Bond Fund Plc, Pioneer DM Cashfonds Plc, Pioneer
European Equity Fund Plc,  Pioneer Central & Eastern Europe Fund Plc and Pioneer
US Real Estate Fund Plc; and Executive  Vice President and Trustee of all of the
Pioneer mutual funds.

STEPHEN K. WEST, Trustee, DOB:  September 1928
125 Broad Street, New York, NY 10004
         Of Counsel to Sullivan & Cromwell  (law firm);  Trustee,  The  Winthrop
Focus Funds (mutual funds); and Trustee of all of the Pioneer mutual funds.

JOHN WINTHROP, Trustee, DOB:  June 1936
One North Adgers Wharf, Charleston, SC  29401
         President,  John  Winthrop  &  Co.,  Inc.  (private  investment  firm);
Director of NUI Corp. (energy sales, services and distribution);  and Trustee of
all of the Pioneer mutual funds, except Pioneer Variable Contracts Trust.

SHERMAN B. RUSS, Vice President,  DOB:   July 1937
         Senior Vice  President  of PMC;  Vice  President  of Pioneer Bond Fund,
Pioneer America Income Trust and Pioneer Interest Shares.

WILLIAM H. KEOUGH, Treasurer,  DOB:  April 1937
      Senior Vice  President,  Chief  Financial  Officer and  Treasurer  of PGI;
Treasurer of PFD, PMC,  PSC,  PCC,  PIntl,  PMT,  PGL,  First Russia,  Omega and
Pioneer SBIC; and Treasurer of all of the Pioneer mutual funds.

JOSEPH P. BARRI, Secretary, DOB: August 1946
      Corporate Secretary of PGI and most of its subsidiaries;  Secretary of all
of the Pioneer mutual funds; and Partner, Hale and Dorr LLP.

ERIC W. RECKARD, Assistant Treasurer, DOB:  June 1956
      Manager of Business  Planning  and Internal  Audit of PMC since  September
1996;  Manager of Fund  Accounting  of PMC since May 1994,  Manager of Auditing,
Compliance  and  Business  Analysis  for PGI  prior to May  1994  and  Assistant
Treasurer of all of the Pioneer mutual funds.

ROBERT P. NAULT, Assistant Secretary, DOB:   March 1964
      General  Counsel and  Assistant  Secretary  of PGI since  1995;  Assistant
Secretary of PMC, PIntl, PGL, First Russia,  Omega and all of the Pioneer mutual
funds;  Assistant  Clerk of PFD and PSC; and junior partner of Hale and Dorr LLP
prior to 1995.

         The Trust's  Agreement and  Declaration of Trust (the  "Declaration  of
Trust")  provides that the holders of two-thirds of its  outstanding  shares may
vote to  remove  a  Trustee  of the Fund at any  meeting  of  shareholders.  See
"Description of Shares" below.  The business address of all officers is 60 State
Street, Boston, Massachusetts 02109.

         All of the  outstanding  capital  stock of PFD,  PMC and PSC is  owned,
directly or indirectly, by PGI, a publicly-owned Delaware corporation.  PMC, the
Fund's  investment  adviser,  serves as the  investment  adviser for the Pioneer
mutual funds listed below and manages the  investments of certain  institutional
accounts.

         The table below lists all the Pioneer mutual funds currently offered to
the public and the investment adviser and principal underwriter for each fund.
    

<PAGE>



                                                Investment           Principal
Fund Name                                         Adviser           Underwriter


Pioneer World Equity Fund                           PMC                 PFD
Pioneer International Growth Fund                   PMC                 PFD
Pioneer Europe Fund                                 PMC                 PFD
Pioneer Emerging Markets Fund                       PMC                 PFD
Pioneer India Fund                                  PMC                 PFD
Pioneer Capital Growth Fund                         PMC                 PFD
Pioneer Mid-Cap Fund                                PMC                 PFD
Pioneer Growth Shares                               PMC                 PFD
Pioneer Micro-Cap Fund                              PMC                 PFD
Pioneer Small Company Fund                          PMC                 PFD
   
Pioneer Independence Fund                           PMC               Note 1
    
Pioneer Gold Shares                                 PMC                 PFD
Pioneer Equity-Income Fund                          PMC                 PFD
Pioneer Fund                                        PMC                 PFD
Pioneer II                                          PMC                 PFD
Pioneer Real Estate Shares                          PMC                 PFD
Pioneer Balanced Fund                               PMC                 PFD
Pioneer Short-Term Income Trust                     PMC                 PFD
Pioneer America Income Trust                        PMC                 PFD
Pioneer Bond Fund                                   PMC                 PFD
Pioneer Intermediate Tax-Free Fund                  PMC                 PFD
Pioneer Tax-Free Income Fund                        PMC                 PFD
Pioneer Cash Reserves Fund                          PMC                 PFD
Pioneer Interest Shares                             PMC                Note 2
Pioneer Variable Contracts Trust                    PMC                Note 3
   
Note           1 This fund is  available  to the  general  public  only  through
               Pioneer   Independence  Plans,  a  systematic   investment  plan,
               sponsored by PFD.
Note 2         This fund is a closed-end fund.
Note           3 This is a series of ten separate portfolios designed to provide
               investment  vehicles for the variable  annuity and variable  life
               insurance contracts of various insurance companies or for certain
               qualified pension plans.
    
   
         To the  knowledge of the Fund,  no officer or Trustee of the Fund owned
5% or more of the issued and outstanding shares of PGI on March 31, 1997, except
Mr. Cogan who then owned approximately 14% of such shares.

         At March 31,  1998,  the Trustees and officers of the Fund owned in the
aggregate  less than 1% of the  outstanding  securities of the Fund. As of March
31, 1998, no shareholders owned more than 5% of the outstanding Class A or Class
B  shares  of the  Fund.  The  following  shareholders  owned  5% or more of the
outstanding  Class C shares of the Fund:  Prudential  Securities  Inc. FBO Gregg
Schneider  TTEE Gregg  Schneider  Family Tr UA DTD  06/29/88,  3434  Vantage Ln,
Glenview, IL 60025-1365 owned approximately12.78%  (715,765 shares); US Clearing
Corp, FBO 192-97373-18,  26 Broadway, New York, NY 1004-1798 owned approximately
6.78%  (379,775  shares) and Hilton A Kahn & William W Gibson  Trustees,  Arthur
Wells Group, 401K & PSP, TTEE Directed Account, 7140 N. Broadway,  St. Louis, MO
63147-2708 owned approximately 5.6% (313,691 shares).

         Compensation  of Officers  and  Trustees.  The Fund pays no salaries or
compensation to any of its officers.  However, the Fund pays an annual trustees'
fee to each Trustee who is not  affiliated  with PGI, PMC, PFD or PSC consisting
of two components:  (a) a base fee of $500 and (b) a variable fee, calculated on
the basis of the average net assets of the Fund.  In  addition,  the Fund pays a
per meeting fee of $120 to each Trustee who is not affiliated with PGI, PMC, PFD
or PSC and pays an annual  Trustee's  fee of $500 plus  expenses to each Trustee
affiliated  with PGI,  PMC, PFD and PSC. The Fund also pays an annual  committee
participation  fee to each  Trustee  who  serves as a member  of any  committees
established  to act on  behalf  of one or  more  of the  Pioneer  mutual  funds.
Committee  fees are allocated to the Fund on the basis of the Fund's average net
assets.  Each  Trustee  who is a member of the Audit  Committee  for the Pioneer
mutual  funds  receives  an  annual  fee  equal to 10% of the  aggregate  annual
trustees' fee, except the Committee Chairperson who receives an annual trustees'
fee equal to 20% of the aggregate  annual  trustees' fee. Members of the Pricing
Committee for the Pioneer  mutual funds,  as well as any other  committee  which
renders material  functional  services to the Boards of Trustees for the Pioneer
mutual  funds,  receive an annual fee equal to 5% of the annual  trustees'  fee,
except the Committee  Chairperson who receives an annual  trustees' fee equal to
10% of the annual  trustees' fee. Each Trustee who is not  affiliated  with PGI,
PMC, PFD or PSC also receives $375 per meeting for attendance at meetings of the
Non-interested  Trustees  Committee,  except for the Committee  Chairperson  who
receives  an  additional  $375 per  meeting.  Any such fees  paid to  interested
Trustees are reimbursed to the Fund under its management contract.

         The following  table provides  information  regarding the  compensation
paid by the Fund and other Pioneer Funds to the Trustees for their services.

                                                Pension or
                                                Retirement            Total
                                                 Benefits          Compensation
                            Aggregate           Accrued as         from Fund and
                          Compensation          Part of the      Pioneer Family
Name of Trustee          from the Fund*       Fund's Expenses       of Funds**

John F. Cogan, Jr.          $     500             $0              $  12,000
Mary K. Bush                      985              0                 30,000
Richard H. Egdahl, M.D.         2,003              0                 62,000
Margaret B.W. Graham            2,003              0                 60,000
John W. Kendrick                2,003              0                 55,800
Marguerite A. Piret             2,385              0                 80,000
David D. Tripple                  500              0                 12,000
Stephen K. West                 2,152              0                 63,800
John Winthrop                   2,264              0                 69,000
Total                         $14,795              0               $444,600
                               ======                              ========

*        For the fiscal year ended  December 31, 1997.
**       For the calendar year ended December 31, 1997.
    
3.  INVESTMENT ADVISER
   
         The  Fund  has   contracted   with  PMC,  60  State   Street,   Boston,
Massachusetts  02109, to act as its investment adviser.  The management contract
is renewable  annually by the vote of a majority of the Board of Trustees of the
Fund  (including  a majority of the Board of Trustees who are not parties to the
contract or interested  persons of any such parties) cast in person at a meeting
called for the purpose of voting on such renewal.  This  contract  terminates if
assigned and may be terminated  without penalty by either party by the giving of
60 days' written notice.

         As compensation for its management services and expenses incurred,  PMC
is  entitled  to a  management  fee at the rate of 0.40% per annum of the Fund's
average daily net assets.  The fee is normally  computed daily and paid monthly.
For fiscal years 1995,  1996 and through  June 30,  1997,  PMC had agreed not to
impose  all or a portion of its  management  fee and to assume  other  operating
expenses of the Trust as required to limit the Class A shares  expenses to 0.85%
of the average daily net assets  attributable to Class A shares;  the portion of
Trust-wide expenses attributable to Class B and Class C shares were reduced only
to the extent that such expenses  were reduced for Class A shares.  See "Expense
Information" in the Prospectus.

         During  the  fiscal  years  ended  December  31,  1995,  1996 and 1997,
pursuant to the expense  limitations  discussed  above,  the  management fee was
reduced by  $463,300,  $257,425  and $97,401  respectively,  resulting in actual
management  fees paid to PMC during  such  periods  of  $221,389,  $514,166  and
$799,390, respectively.
    
4.       UNDERWRITING AGREEMENT AND DISTRIBUTION PLANS
   
         The  Trust,  on  behalf  of the  Fund,  entered  into  an  underwriting
agreement with PFD. The  underwriting  agreement will continue from year to year
if annually approved by the Trustees.  The Underwriting  Agreement provides that
PFD will bear any distribution expenses not borne by the Fund.

         PFD  bears all  expenses  it incurs  in  providing  services  under the
Underwriting Agreement.  Such expenses include compensation to its employees and
representatives  and to securities  dealers for  distribution  related  services
performed for the Fund.  PFD also pays certain  expenses in connection  with the
distribution of the Fund's shares, including the cost of preparing, printing and
distributing  advertising or promotional materials, and the cost of printing and
distributing prospectuses and supplements to prospective shareholders.  The Fund
bears the cost of  registering  its  shares  under  federal,  state and  foreign
securities law.

         The Fund and PFD have agreed to indemnify  each other  against  certain
liabilities, including liabilities under the Securities Act of 1933, as amended.
Under the  underwriting  agreement,  PFD will use its best  efforts in rendering
services to the Fund.
    
         The Trust,  on behalf of the Fund,  has adopted a plan of  distribution
pursuant to Rule 12b-1 promulgated by the SEC under the 1940 Act with respect to
the Class A,  Class B and Class C shares  of the Fund (the  "Class A Plan,"  the
"Class B Plan" and the "Class C Plan," respectively) (together, the "Plans").

         Class A Plan.  Pursuant to the Class A Plan the Fund may  reimburse PFD
for its expenditures in financing any activity  primarily  intended to result in
the sale of the Class A shares.  Certain  categories of such  expenditures  have
been approved by the Board of Trustees and are set forth in the Prospectus.  See
"Distribution Plans" in the Prospectus. The expenses of the Fund pursuant to the
Class A Plan are accrued daily at a rate which may not exceed the annual rate of
0.15% of the Fund's average daily net assets attributable to Class A shares.

         Class B Plan. The Class B Plan provides that the Fund shall pay PFD, as
the Fund's distributor for its Class B shares, a daily distribution fee equal on
an annual basis to 0.75% of the Fund's average daily net assets  attributable to
Class B shares  and  will pay PFD a  service  fee  equal to 0.25% of the  Fund's
average daily net assets  attributable to Class B shares (which PFD will in turn
pay to  securities  dealers which enter into a selling  agreement  with PFD at a
rate of up to 0.25% of the Fund's average daily net assets attributable to Class
B shares owned by  investors  for whom that  securities  dealer is the holder or
dealer of record). This service fee is intended to be consideration for personal
services and/or account maintenance services rendered by the dealer with respect
to Class B shares.  PFD will advance to dealers the first-year  service fee at a
rate equal to 0.25% of the amount invested. As compensation  therefore,  PFD may
retain the  service  fee paid by the Fund with  respect  to such  shares for the
first year after purchase.  Dealers will become eligible for additional  service
fees with respect to such shares  commencing in the thirteenth  month  following
purchase.  Dealers  may from  time to time be  required  to meet  certain  other
criteria in order to receive service fees. PFD or its affiliates are entitled to
retain all  service  fees  payable  under the Class B Plan for which there is no
dealer  of  record or for  which  qualification  standards  have not been met as
partial  consideration for personal services and/or account maintenance services
performed by PFD or its affiliates for shareholder accounts.

         The purpose of  distribution  payments to PFD under the Class B Plan is
to compensate PFD for its  distribution  services with respect to Class B shares
of the Fund.  PFD pays  commissions  to dealers as well as  expenses of printing
prospectuses  and reports used for sales purposes,  expenses with respect to the
preparation  and printing of sales  literature  and other  distribution  related
expenses,   including,   without  limitation,  the  cost  necessary  to  provide
distribution-related   services  or  personnel,   travel,  office  expenses  and
equipment.  The  Class B Plan  also  provides  that PFD will  receive  all CDSCs
attributable to Class B shares.  (See  "Distribution  Plans" in the Prospectus.)
When a broker-dealer  sells Class B shares and elects,  with PFD's approval,  to
waive its right to receive the commission normally paid at the time of the sale,
PFD may cause all or a portion of the  distribution  fees described  above to be
paid to the broker-dealer.

         The Class C Plan. The Class C Plan provides that the Fund will pay PFD,
as the Fund's  distributor  for its Class C shares,  a distribution  fee accrued
daily  and paid  quarterly,  equal  on an  annual  basis to 0.75% of the  Fund's
average  daily  net  assets  attributable  to Class C shares  and will pay PFD a
service fee equal to 0.25% of the Fund's  average daily net assets  attributable
to Class C shares. PFD will in turn pay to securities dealers which enter into a
selling  agreement with PFD a distribution  fee and a service fee at rates of up
to 0.75% and  0.25%,  respectively,  of the  Fund's  average  daily  net  assets
attributable  to Class C shares  owned by  investors  for whom  that  securities
dealer is the holder or dealer of record.  The  service fee is intended to be in
consideration of personal services and/or account maintenance  services rendered
by the dealer with  respect to Class C shares.  PFD will  advance to dealers the
first-year  service  fee at a rate  equal to 0.25% of the  amount  invested.  As
compensation  therefore,  PFD may retain the  service  fee paid by the Fund with
respect to such  shares for the first year  after  purchase.  Commencing  in the
thirteenth  month  following a purchase of Class C shares,  dealers  will become
eligible  for  additional  service  fees at a rate of up to 0.25% of the current
value of the amount  invested  and  additional  compensation  at a rate of up to
0.75% of the average net asset  value of such  shares.  Dealers may from time to
time be  required to meet  certain  other  criteria in order to receive  service
fees.  PFD or its  affiliates  are  entitled to retain all service  fees payable
under  the  Class C Plan for  which  there is no  dealer  of record or for which
qualification  standards have not been met as partial consideration for personal
services and/or account maintenance  services performed by PFD or its affiliates
for shareholder accounts.

         The purpose of  distribution  payments to PFD under the Class C Plan is
to  compensate  PFD for its  distribution  services  with respect to the Class C
shares of the Fund.  PFD pays  commissions  to  dealers as well as  expenses  of
printing prospectuses and reports used for sales purposes, expenses with respect
to   the   preparation   and   printing   of   sales    literature   and   other
distribution-related expenses, including, without limitation, the cost necessary
to provide  distribution-related  services, or personnel, travel office expenses
and  equipment.  The Class C Plan also  provides that PFD will receive all CDSCs
attributable to Class C shares.  (See  "Distribution  Plans" in the Prospectus.)
When a broker-dealer  sells Class C shares and elects,  with PFD's approval,  to
waive its right to receive the commission normally paid at the time of the sale,
PFD may cause all or a portion of the  distribution  fees described  above to be
paid to the broker-dealer.

         General. In accordance with the terms of the Plans, PFD provides to the
Fund for  review by the  Trustees  a  quarterly  written  report of the  amounts
expended under the respective  Plan and the purpose for which such  expenditures
were made. In the Trustees'  quarterly  review of the Plans,  they will consider
the continued appropriateness and the level of reimbursement or compensation the
Plans provide.

         No  interested  person of the Fund,  nor any Trustee of the Fund who is
not an  interested  person of the Fund,  has any  direct or  indirect  financial
interest in the operation of the Plans except to the extent that PFD and certain
of its employees may be deemed to have such an interest as a result of receiving
a portion of the amounts  expended under the Plans by the Fund and except to the
extent certain officers may have an interest in PFD's ultimate parent, PGI.
   
         The Plans were  adopted by a  majority  vote of the Board of  Trustees,
including  all of the Trustees who are not, and were not at the time they voted,
interested  persons of the Fund, as defined in the 1940 Act (none of whom has or
have any direct or indirect  financial interest in the operation of the Plans) ,
cast in person at a meeting  called for the  purpose of voting on the Plans.  In
approving  the  Plans,  the  Trustees  identified  and  considered  a number  of
potential  benefits which the Plans may provide.  The Board of Trustees believes
that there is a reasonable  likelihood  that the Plans will benefit the Fund and
its current and future  shareholders.  Under their  terms,  the Plans  remain in
effect from year to year provided such continuance is approved  annually by vote
of the Trustees in the manner  described  above. The Plans may not be amended to
increase materially the annual percentage limitation of average net assets which
may be  spent  for  the  services  described  therein  without  approval  of the
shareholders of the Class affected thereby, and material amendments of the Plans
must also be approved by the Trustees in the manner  described  above A Plan may
be  terminated  at any time,  without  payment  of any  penalty,  by vote of the
majority of the Trustees who are not interested  persons of the Fund and have no
direct or indirect financial interest in the operation of the Plan, or by a vote
of a majority of the outstanding  voting securities (as defined in the 1940 Act)
of the respective Class of the Fund. A Plan will automatically  terminate in the
event of its assignment (as defined in the 1940 Act

         During the fiscal year ended December 31, 1997, the Fund incurred total
distribution  fees of  $260,213,  $192,268  and $30,168  pursuant to the Class A
Plan, Class B Plan and Class C Plan,  respectively.  Distribution fees were paid
by the Fund to PFD in  reimbursement  of or as compensation for expenses related
to servicing shareholder accounts and to compensate dealers and sales personnel.

         Redemptions of each class of shares may be subject to a CDSC. A CDSC of
1% may be imposed on redemptions of certain net asset value purchases of Class A
shares  within one year of purchase.  Class B shares that are redeemed  within 6
years of purchase are subject to a CDSC at declining rates beginning at 4% based
on the  lower  of the  cost  or  market  value  of the  shares  being  redeemed.
Redemptions  of Class C shares within one year of purchase are subject to a CDSC
of 1%.  Proceeds  from  CDSCs are paid to PFD.  During  the  fiscal  year  ended
December 31, 1997, CDSCs in the amount of $115,275 were paid to PFD.
    
5.       SHAREHOLDER SERVICING/TRANSFER AGENT
   
         The  Fund  has   contracted   with  PSC,  60  State   Street,   Boston,
Massachusetts 02109, to act as shareholder  servicing and transfer agent for the
Fund.  This contract may be terminated  without  penalty by either party upon 90
days' written notice.

         Under the terms of its contract with the Fund, PSC services shareholder
accounts,  and  its  duties  include:  (i)  processing  sales,  redemptions  and
exchanges of shares of the Fund; (ii)  distributing  dividends and capital gains
associated with Fund portfolio  accounts;  and (iii) maintaining account records
and responding to shareholder inquiries
    
         PSC  receives  an annual fee of $28.00 per Class A, Class B and Class C
shareholder  account from the Fund as  compensation  for the services  described
above.  PSC is also reimbursed by the Fund for its  out-of-pocket  expenditures.
The  annual  fee is set at an amount  determined  by vote of a  majority  of the
Trustees  (including  a  majority  of the  Trustees  who are not  parties to the
contract with PSC or interested persons of any such parties) to be comparable to
fees for such services being paid by other  investment  companies.  The Fund may
compensate entities which have agreed to provide certain sub-accounting services
such as specific  transaction  processing and recordkeeping  services.  Any such
payments  by the  Fund  would  be in lieu of the per  account  fee  which  would
otherwise be paid by the Fund to PSC.

6.       CUSTODIAN

         Brown Brothers Harriman & Co., 40 Water Street,  Boston,  Massachusetts
02109, is the custodian (the "Custodian") of the Fund's assets.  The Custodian's
responsibilities  include  safekeeping  and  controlling  the  Fund's  cash  and
securities,  handling  the receipt and  delivery of  securities  and  collecting
interest  and  dividends  on the  Fund's  investments.  The  Custodian  does not
determine the  investment  policies of the Fund or decide which  securities  the
Fund will buy or sell. The Fund may,  however,  invest in securities,  including
repurchase  agreements,  issued by the Custodian and may deal with the Custodian
as principal in securities  transactions.  Portfolio securities may be deposited
into the Federal Reserve-Treasury Department Book Entry System or the Depository
Trust Company.

         Pursuant to a separate agreement with the Custodian, the Custodian also
provides certain accounting  services to the Fund,  including the calculation of
yield for the Fund.

7.       PRINCIPAL UNDERWRITER

         PFD,  60 State  Street,  Boston,  Massachusetts  02109,  serves  as the
principal underwriter for the Fund in connection with the continuous offering of
its shares.  During the Fund's three most recently  completed  fiscal years,  no
underwriting  commissions were paid to PFD. PFD commenced  service as the Fund's
principal underwriter as of March 31, 1995.

         The Fund will not generally issue shares for  consideration  other than
cash.  At  the  Fund's  sole  discretion,  however,  it  may  issue  shares  for
consideration  other than cash in connection  with a  reorganization,  statutory
merger, or other acquisition of portfolio securities.  An exchange of securities
for Fund shares may be a taxable transaction to the shareholder.

         The redemption price of shares of beneficial  interest of the Fund may,
at PMC's  discretion,  be paid in cash or  portfolio  securities.  The Fund has,
however,  elected to be governed  by Rule 18f-1  under the 1940 Act  pursuant to
which the Fund is obligated to redeem  shares solely in cash up to the lesser of
$250,000  or 1% of the Fund's net asset value  during any 90-day  period for any
one shareholder. Should the amount of redemptions by any shareholder exceed such
limitation,  the Fund will have the  option of  redeeming  the excess in cash or
portfolio securities.  In the latter case, the securities are taken at the value
employed in determining  the Fund's net asset value. A shareholder  whose shares
are  redeemed  in-kind may incur  brokerage  charges in selling  the  securities
received  in-kind.  The selection of such securities will be made in such manner
as the Board deems fair and reasonable.

8.       INDEPENDENT PUBLIC ACCOUNTANTS

         Arthur Andersen LLP, 225 Franklin Street, Boston,  Massachusetts 02110,
is the Fund's  independent  public  accountant,  providing audit  services,  tax
return review and assistance and consultation with respect to the preparation of
filings with the SEC.


<PAGE>



9.       PORTFOLIO TRANSACTIONS

         The Fund  intends to fully  manage its  portfolio by buying and selling
securities,  as  well  as  holding  securities  to  maturity.  In  managing  its
portfolio,  the Fund seeks to take  advantage of market  developments  and yield
disparities, which may include use of the following strategies:

         (1) shortening the average maturity of its portfolio in anticipation of
             a  rise  in  interest  rates  so as  to  minimize  depreciation  of
             principal;

         (2) lengthening  the average  maturity of its portfolio in anticipation
             of a decline in interest rates so as to maximize yield;

         (3) selling  one  type  of  debt  security  and  buying   another  when
             disparities arise in the relative values of each; and

         (4) changing  from one debt  security to an  essentially  similar  debt
             security  when their  respective  yields  appear  distorted  due to
             market factors.

         The Fund engages in portfolio  trading if it believes a transaction net
of costs  (including  taxes and  custodian  charges)  will help in achieving the
Fund's investment objective.

         Decisions relating to the purchase and sale of securities for the Fund,
the allocation of portfolio transactions and, where applicable,  the negotiation
of commission rates are made by officers of PMC.

         The primary consideration in placing portfolio security transactions is
execution  at the most  favorable  prices.  PMC has  complete  freedom as to the
markets  in  and  broker-dealers  through  which  it  seeks  this  result.  Debt
securities are traded principally in the over-the-counter  market on a net basis
through  dealers  acting for their own accounts and not as brokers.  The cost of
securities purchased from underwriters  includes an underwriter's  commission or
concession,  and the prices at which  securities are purchased and sold from and
to dealers  include a dealer's  mark-up or mark-down.  PMC attempts to negotiate
with  underwriters  to decrease the  commission or concession for the benefit of
the Fund.  PMC normally  seeks to deal directly  with the primary  market makers
unless, in its opinion, better prices are available elsewhere.
   
         Subject to the  requirement of seeking  execution at the best available
price,  securities may, as authorized by PMC's  management  contract,  be bought
from or sold to  dealers  who have  furnished  statistical  research  and  other
information  or services  to PMC and the Fund,  or who sell shares of any of the
Pioneer  mutual  funds.  Management  believes  that no exact dollar value can be
calculated for such services.

         During the fiscal  years  ended  December  31,  1995,  1996,  and 1997,
respectively, the Fund paid no brokerage or underwriting commissions.
    
10.      TAX STATUS
   
         It is the Fund's policy to meet the requirements of Subchapter M of the
Code, for qualification as a regulated  investment  company.  These requirements
relate to the sources of the Fund's income,  the  diversification  of its assets
and the distribution of its income to  shareholders.  If the Fund meets all such
requirements and distributes to its shareholders,  in accordance with the Code's
timing requirements, all investment company taxable income and net capital gain,
if any,  which it earns,  the Fund will be relieved of the  necessity  of paying
federal income tax.

         In order to qualify as a regulated  investment company under Subchapter
M, the Fund must,  among other  things,  derive at least 90% of its annual gross
income from interest, gains from the sale or other disposition of securities and
certain  other  income  (the "90% income  test"),  and  satisfy  certain  annual
distribution and quarterly diversification requirements.

         Dividends from investment  company  taxable income,  which includes net
investment  income and net  short-term  capital gain in excess of net  long-term
capital  loss,  are  taxable as  ordinary  income,  whether  received in cash or
reinvested in additional  shares.  Dividends from net long-term  capital gain in
excess of net  short-term  capital loss ("net capital  gain"),  if any,  whether
received in cash or reinvested in additional  shares,  are taxable to the Fund's
shareholders as capital gains for federal income tax purposes  without regard to
the  length  of time  shares  of the Fund  have  been  held.  The Fund  does not
anticipate  that it will earn or distribute any net capital gain. If it does, it
is unlikely that any portion of a distribution of net capital gain would qualify
for the new,  lower tax rate  (usually  20%)  applicable  to  certain  long-term
capital gains under the Taxpayer Relief Act of 1997.
    
         Any dividend  declared by the Fund in October,  November or December as
of a record date in such a month and paid during the  following  January will be
treated for federal income tax purposes as received by  shareholders on December
31 of the calendar year in which it is declared.

         For federal income tax purposes, the Fund is permitted to carry forward
a net capital loss for any year to offset its capital gains,  if any, during the
eight years  following  the year of the loss. To the extent  subsequent  capital
gains are offset by such  losses,  they  would not result in federal  income tax
liability to the Fund and therefore are not expected to be  distributed  as such
to  shareholders.  At December 31,  1997,  the Fund had  aggregate  capital loss
carryforwards  of  $276,063,  which  will  expire  between  2002 and 2003 if not
utilized.

         Redemptions and exchanges of shares are taxable events for shareholders
that are subject to tax but generally will not result in taxable gain or loss if
the Fund successfully maintains a constant net asset value per share. A loss may
occur  to the  extent a CDSC is  imposed  in  connection  with a  redemption  or
exchange.  Any loss realized by a shareholder  upon the redemption,  exchange or
other disposition of shares with a tax holding period of six months or less will
be treated as a long-term  capital loss to the extent of any amounts  treated as
distributions of long-term capital gain with respect to such shares.

         Losses on redemptions or other dispositions of shares may be disallowed
under "wash sale" rules in the event of other investments in the Fund (including
those  made  pursuant  to   reinvestment   of  dividends   and/or  capital  gain
distributions) within a period of 61 days beginning 30 days before and ending 30
days after a redemption  or other  disposition  of shares.  In such a case,  the
disallowed portion of any loss would be included in the federal tax basis of the
shares acquired in the other investments.  Shareholders should consult their own
tax advisers with reference to their  individual  circumstances to determine the
tax treatment of any particular transaction in Fund shares.

         The  Fund's  dividends  and  distributions  will  not  qualify  for any
dividends-received  deduction  that might  otherwise  be  available  for certain
dividends received by shareholders that are corporations.

         The Fund may be  subject  to  withholding  and other  taxes  imposed by
foreign countries, including taxes on interest, dividends and capital gain, with
respect to its investments in those countries.  Tax conventions  between certain
countries  and the U.S.  may reduce or eliminate  such taxes in some cases.  The
Fund does not expect to satisfy  the  requirements  for  passing  through to its
shareholders  their pro rata shares of qualified foreign taxes paid by the Fund,
with the result that  shareholders  will not  include  such taxes in their gross
incomes and will not be entitled to a tax  deduction or credit for such taxes on
their own tax returns.

         Different  tax  treatment,   including   penalties  on  certain  excess
contributions  and  deferrals,   certain   pre-retirement  and   post-retirement
distributions,  and  certain  prohibited  transactions,  is accorded to accounts
maintained as qualified retirement plans.  Shareholders should consult their tax
advisers for more information.
   
         A state income (and possibly local income and/or  intangible  property)
tax exemption is generally available to the extent the Fund's  distributions are
derived from  interest on (or, in the case of  intangible  property  taxes,  the
value of its assets is  attributable  to) certain U.S.  government  obligations,
provided in some states that certain thresholds for holdings of such obligations
and/or reporting  requirements are satisfied.  The Fund will not seek to satisfy
any  threshold or reporting  requirements  that may apply in  particular  taxing
jurisdictions,  although the Fund may in its sole  discretion  provide  relevant
information to shareholders.

         Federal law requires that the Fund  withhold (as "backup  withholding")
31% of reportable payments,  including  dividends,  to shareholders who have not
complied with IRS regulations.  In order to avoid this withholding  requirement,
shareholders  must  certify on their  Account  Applications,  or on separate IRS
Forms W-9,  that the Social  Security  Number or other  Taxpayer  Identification
Number  they  provide is their  correct  number and that they are not  currently
subject to backup withholding,  or that they are exempt from backup withholding.
The Fund may nevertheless be required to withhold if it receives notice from the
IRS or a broker that the number  provided is incorrect or backup  withholding is
applicable  as a result of  previous  underreporting  of  interest  or  dividend
income.

         If, as  anticipated,  the Fund  continues  to  qualify  as a  regulated
investment  company  under  the  Code,  it  will  not be  required  to  pay  any
Massachusetts  income,  corporate  excise  or  franchise  taxes or any  Delaware
corporation income tax.

         The description of certain federal tax provisions above relates only to
U.S. federal income tax consequences for shareholders who are U.S. persons, i.e.
U.S.  citizens  or  residents  or U.S.  corporations,  partnerships,  trusts  or
estates,  and who are subject to U.S.  federal income tax. This description does
not address the special tax rules that may be applicable to particular  types of
investors,  such as  financial  institutions,  insurance  companies,  securities
dealers,  or tax-exempt or tax-deferred plans,  accounts or entities.  Investors
other  than U.S.  persons  may be  subject  to  different  U.S.  tax  treatment,
including  a  possible  30%   non-resident   alien  U.S.   withholding  tax  (or
non-resident alien withholding tax at a lower treaty rate) on amounts treated as
ordinary  dividends  from the Fund.  Shareholders  should  consult their own tax
advisers on these matters and on state, local and other applicable tax laws.
    
11.      DESCRIPTION OF SHARES

         The Declaration of Trust permits the Board of Trustees to authorize the
issuance of an  unlimited  number of full and  fractional  shares of  beneficial
interest  (without par value) which may be divided into such separate  series as
the  Trustees may  establish.  Currently,  the Trust  consists of the one series
named  herein.  The Trustees may  establish  additional  series of shares in the
future,  and may divide or combine the shares into a greater or lesser number of
shares without thereby changing the  proportionate  beneficial  interests in the
Trust.  The Declaration of Trust further  authorizes the Trustees to classify or
reclassify any series of the shares into one or more classes.  Pursuant thereto,
the Trustees  have  authorized  the  issuance of three  classes of shares of the
Fund,  Class A,  Class B and Class C shares.  Each  share of a class of the Fund
represents an equal  proportionate  interest in the assets of the Fund allocable
to that class.  Upon liquidation of the Fund,  shareholders of each class of the
Fund are  entitled to share pro rata in the Fund's net assets  allocable to such
class available for distribution to  shareholders.  The Trust reserves the right
to create and issue  additional  series or classes of shares,  in which case the
shares of each class of a series  would  participate  equally  in the  earnings,
dividends and assets allocable to that class of the particular series.
   
         Shareholders  are entitled to one vote for each share held and may vote
in the  election  of  Trustees  and on other  matters  submitted  to meetings of
shareholders.  Although  Trustees are not elected annually by the  shareholders,
shareholders have, under certain circumstances,  the right to remove one or more
Trustees.  The shares of each series of the Fund are entitled to vote separately
to approve investment advisory agreements or changes in investment restrictions,
but  shareholders  of all series vote  together in the election and selection of
Trustees  and  accountants.  Shares of all  series or  classes  of the Fund vote
together as a class on matters  that affect all series or classes of the Fund in
substantially the same manner. As to matters affecting a single series or class,
shares of such  series or class will vote  separately.  No  amendment  adversely
affecting certain rights of shareholders may be made to the Trust's  Declaration
of Trust without the affirmative  vote of a majority of its shares.  Shares have
no preemptive or conversion  rights.  Shares are fully paid and nonassessable by
the Trust, except as stated below.
    
12.  CERTAIN LIABILITIES

         As a Delaware  business trust,  the Trust's  operations are governed by
its Declaration of Trust dated March 7, 1995. A copy of the Trust's  Certificate
of Trust,  also dated March 7, 1995, is on file with the Office of the Secretary
of  State  of  the  State  of  Delaware.   Generally,  Delaware  business  trust
shareholders are not personally  liable for obligations of the Delaware business
trust under Delaware law. The Delaware  Business Trust Act (the "Delaware  Act")
provides that a shareholder  of a Delaware  business  trust shall be entitled to
the same limitation of liability  extended to shareholders of private for-profit
corporations. The Trust's Declaration of Trust expressly provides that the Trust
has been organized  under the Delaware Act and that the  Declaration of Trust is
to be governed by Delaware  law.  It is  nevertheless  possible  that a Delaware
business trust, such as the Trust,  might become a party to an action in another
state  whose  courts  refused to apply  Delaware  law, in which case the Trust's
shareholders could be subject to personal liability.

         To guard against this risk,  the  Declaration  of Trust (i) contains an
express disclaimer of shareholder liability for acts or obligations of the Trust
and  provides  that notice of such  disclaimer  may be given in each  agreement,
obligation and instrument entered into or executed by the Trust or its Trustees,
(ii) provides for the  indemnification out of Trust property of any shareholders
held  personally  liable for any  obligations  of the Trust or any series of the
Trust and (iii) provides that the Trust shall, upon request,  assume the defense
of any claim made against any shareholder for any act or obligation of the Trust
and  satisfy  any  judgment  thereon.  Thus,  the  risk of a  Trust  shareholder
incurring  financial  loss beyond his or her  investment  because of shareholder
liability is limited to circumstances in which all of the following  factors are
present:  (1) a court refused to apply  Delaware  law; (2) the  liability  arose
under tort law or, if not, no contractual limitation of liability was in effect;
and (3) the Trust itself would be unable to meet its  obligations.  In the light
of  Delaware  law,  the  nature of the  Trust's  business  and the nature of its
assets, the risk of personal liability to a Fund shareholder is remote.

         The  Declaration  of  Trust  further  provides  that  the  Trust  shall
indemnify  each of its Trustees and officers  against  liabilities  and expenses
reasonably  incurred by them, in connection with, or arising out of, any action,
suit or proceeding,  threatened  against or otherwise  involving such Trustee or
officer,  directly or indirectly, by reason of being or having been a Trustee or
officer of the Trust.  The  Declaration of Trust does not authorize the Trust to
indemnify any Trustee or officer  against any liability to which he or she would
otherwise be subject by reason of or for willful  misfeasance,  bad faith, gross
negligence or reckless disregard of such person's duties.

13.      DETERMINATION OF NET ASSET VALUE
   
         The net asset  value per share of each class of the Fund is  determined
as of the close of regular trading  (normally 4:00 p.m.,  Eastern time), on each
day on which the Exchange is open for trading.  As of the date of this Statement
of Additional Information, the Exchange is open for trading every weekday except
for 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. The net asset value per share of each class
of the Fund is also determined on any other day in which the level of trading in
its portfolio  securities is sufficiently  high that the current net asset value
per share might be materially  affected by changes in the value of its portfolio
securities.  The Fund is not required to determine its net asset value per share
on any day in which no purchase orders for the shares of the Fund are received.

         The net asset  value per share of each class of the Fund is computed by
taking the value of all of a Fund's assets  attributable to that class, less the
Fund's  liabilities  attributable to that class,  and dividing the result by the
number of  outstanding  shares of that class.  For purposes of  determining  net
asset value,  expenses of the classes of the Fund are accrued  daily.  as of the
close of regular trading on the Exchange and taken into account.
    
         Except as set forth in the following  paragraph,  the Fund's  portfolio
investments  are valued on each business day on the basis of amortized  cost, if
the Board of Trustees  determines  in good faith that such  method  approximates
fair value.  This  technique  involves  valuing an  instrument  at its cost and,
thereafter,  assuming a constant  amortization  to maturity  of any  discount or
premium,  regardless of the impact of  fluctuating  interest rates on the market
value of the instrument.  While this method provides certainty in valuation,  it
may result in periods  during which value,  as determined by amortized  cost, is
higher or lower than the price the Fund would receive if it sold the investment.
During  periods of  declining  interest  rates,  the yield on shares of the Fund
computed as described below may tend to be higher than a like  computation  made
by a fund with identical  investments utilizing a method of valuation based upon
market  prices  and  estimates  of  market  prices  for  all  of  its  portfolio
investments.  Thus, if the use of amortized cost by the Fund resulted in a lower
aggregate  portfolio  value on a particular  day, a prospective  investor in the
Fund would be able to obtain a somewhat  higher  yield  than would  result  from
investment in a fund utilizing solely market values. The converse would apply in
a period of rising interest rates.

         Standby  commitments  will be valued at zero in  determining  net asset
value.  "When-issued"  securities will be valued at the value of the security at
the time the commitment to purchase is entered into.

         The  valuation  of the Fund's  portfolio  investments  based upon their
amortized cost and the concomitant  expectation to maintain the Fund's per share
net asset value of $1.00 is  permitted  in  accordance  with Rule 2a-7 under the
1940 Act pursuant to which the Fund must adhere to certain  conditions which are
described in detail in the Prospectus.  The Fund must maintain a dollar-weighted
average  portfolio  maturity of 90 days or less. The maturities of variable rate
demand  instruments held in the Fund's portfolio will be deemed to be the longer
of the  demand  period or the  period  remaining  until the next  interest  rate
adjustment,  although  stated  maturities  may be in  excess  of one  year.  The
Trustees  have  established  procedures  designed  to  stabilize,  to the extent
reasonably  possible,  the  price  per  share of each  class of the Fund for the
purpose  of  maintaining  sales and  redemptions  at a single  value.  It is the
intention of the Fund to maintain each class' per share net asset value of $1.00
but there can be no assurance of this.  Such  procedures  will include review of
the Fund's  portfolio  holdings by the Trustees,  at such  intervals as they may
deem  appropriate,  to  determine  whether  the Fund's net asset value per class
calculated by using available  market  quotations  deviates from $1.00 per share
and,  if so,  whether  such  deviation  may result in  material  dilution  or is
otherwise unfair to existing  shareholders.  In the event the Trustees determine
that such a deviation exists, they have agreed to take such corrective action as
they regard as necessary and appropriate,  including:  (i) the sale of portfolio
instruments  prior to maturity to realize  capital gains or losses or to shorten
average portfolio maturity;  (ii) withholding dividends;  (iii) redeeming shares
in kind;  or (iv)  establishing  a net asset value per share by using  available
market quotations.

14.      SYSTEMATIC WITHDRAWAL PLAN
   
         The  Systematic  Withdrawal  Plan  ("SWP")  is  designed  to  provide a
convenient method of receiving fixed payments at regular intervals from the Fund
deposited  by the  applicant  under  this SWP.  The  applicant  must  deposit or
purchase  for  deposit  with PSC shares of the Fund  having a total value of not
less than $10,000. Periodic checks of $50 or more will be deposited,  monthly or
quarterly,  directly into a bank account designated by the applicant, or will be
sent by check to the  applicant,  or any  person  designated  by the  applicant.
Withdrawals  from Class B and Class C share accounts are limited as described in
"Systematic  Withdrawal Plan" in the Prospectus.  A designation of a third party
to receive checks  requires an acceptable  signature  guarantee.  See "Waiver or
Reduction of Contingent Deferred Sales Charge" in the Prospectus. Designation of
another  person to receive the checks  subsequent  to opening an account must be
accompanied by a signature guarantee.
    
         Any income dividends or capital gains distributions on shares under the
SWP  will be  credited  to the  SWP  account  on the  payment  date in full  and
fractional shares at the net asset value per share in effect on the record date.

         SWP  payments are made from the  proceeds of the  redemption  of shares
deposited  under the SWP in a SWP account.  To the extent that such  redemptions
for periodic  withdrawals  exceed dividend income reinvested in the SWP account,
such  redemptions  will reduce and may  ultimately  exhaust the number of shares
deposited in the SWP account. In addition, the amounts received by a shareholder
cannot  be  considered  as an actual  yield or  income on his or her  investment
because part of such payments may be a return of his or her investment.

         The SWP may be terminated  at any time (1) by written  notice to PSC or
from PSC to the shareholder;  (2) upon receipt by PSC of appropriate evidence of
the  shareholder's  death;  or (3)  when all  shares  under  the SWP  have  been
redeemed.

15.      INVESTMENT RESULTS

         From  time to time,  the Fund will  provide  yield  quotations  for its
shares.  These quotations are calculated by standard  methods  prescribed by the
SEC and may from time to time be used in the  Fund's  Prospectus,  Statement  of
Additional   Information,   advertisements,   shareholder   reports   or   other
communications  to shareholders.  However,  these yield quotations should not be
considered as representative of the performance of the Fund in the future since,
unlike  some bank  deposits or other  investments  which pay a fixed yield for a
stated  period of time,  the  yields  of the Fund  will vary  based on the type,
quality and maturities of the securities held in its portfolio,  fluctuations in
short-term interest rates and changes in its expenses.

         The Fund's yield quotations are computed using the appropriate  figures
for a particular class as follows: the net change,  exclusive of capital changes
(i.e.,  realized  gains and losses from the sale of  securities  and  unrealized
appreciation  and  depreciation),  in the value of a  hypothetical  pre-existing
Class  A,  Class B or  Class C  account  having a  balance  of one  share at the
beginning  of  the  seven-day   base  period  is  determined  by  subtracting  a
hypothetical charge reflecting expense deductions from the hypothetical account,
and dividing the net change in value by the value of the share at the  beginning
of the base period. This base period return is then multiplied by 365/7 with the
resulting yield figure carried to the nearest 100th of 1%. The  determination of
net change in account value  reflects the value of additional  shares  purchased
with dividends from the original share,  dividends declared on both the original
share and any such additional shares, and all fees that are charged to the Fund,
in  proportion to the length of the base period and the Fund's  average  account
size (with respect to any fees that vary with the size of an account).

         The Fund may also advertise  quotations of effective  yield.  Effective
yield is computed by compounding the unannualized  base period return determined
as in the preceding paragraph by adding 1 to the base period return, raising the
sum to a power equal to 365 divided by 7, and  subtracting  one from the result,
according to the following formula:

              Effective Yield = (base period return + 1) 365/7 - 1
   
         The  yield and  effective  yield of the Fund for the  seven-day  period
ended December 31, 1997 is as follows:

                                                               Effective
                                     Yield                     Yield

Class A Shares                         4.93%                    5.05%
Class B Shares                         4.14%                    4.22%
Class C Shares                         4.14%                    4.22%
    
         Automated  Information  Line.  FactFoneSM,  Pioneer's 24-hour automated
information line, allows shareholders to dial toll-free  1-800-225-4321 and hear
recorded fund information, including:

         o        net asset value prices for all Pioneer mutual funds;

         o        annualized 30-day yields on Pioneer's fixed income funds;

         o        annualized 7-day yields and 7-day effective (compound) yields
                  for Pioneer's money market fund; and

         o        dividends and capital gains distributions on all Pioneer
                  mutual funds.

         Yields  are  calculated  in  accordance  with  SEC  mandated   standard
formulas.

         In  addition,  by  using  a  personal  identification  number  ("PIN"),
shareholders  may enter  purchases,  exchanges  and  redemptions,  access  their
account  balances  and  last  three  transactions  and  may  order  a  duplicate
statement. See "FactFoneSM" in the Prospectus for more information.

         All performance numbers  communicated through FactFoneSM represent past
performance  and include the maximum  applicable  sales charge.  A shareholder's
actual yield and total return will vary with  changing  market  conditions.  The
value of shares  (except for the Fund,  which  seeks to maintain a stable  $1.00
share  price)  will also vary and may be worth more or less at  redemption  than
their original cost.

16.      FINANCIAL STATEMENTS
   
         The Trust's  Annual  Report,  filed with the SEC on  February  20, 1998
(Accession No.  0000812195-98-000003),  is  incorporated  by reference into this
Statement of  Additional  Information.  The  financial  statements in the Fund's
Annual Report, including the financial highlights, for the period ended December
31, 1997,  included or  incorporated  by reference  into the Prospectus and this
Statement of Additional  Information,  have been audited by Arthur Andersen LLP,
independent public accountants, as indicated in their report with respect to the
financial statements,  and are included in reliance upon the authority of Arthur
Andersen LLP as experts in accounting and auditing in giving their report.
    
<PAGE>



                                   APPENDIX A
                    Description of Commercial Paper Ratings1

                         Moody's Investors Service, Inc.

Commercial Paper

         P-1: P-1 is the highest  commercial  paper rating  assigned by Moody's.
Among the factors  considered by Moody's in assigning ratings are the following:
(i) evaluation of the management of the issuer;  (ii) economic evaluation of the
issuer's industry or industries and an appraisal of speculative-type risks which
may be inherent in certain areas;  (iii) evaluation of the issuer's  products in
relation to competition and customer acceptance;  (iv) liquidity; (v) amount and
quality of long-term  debt;  (vi) trend of earnings  over a period of ten years;
(vii) financial strength of any parent company and the relationships which exist
with  the  issuer;  and  (viii)  recognition  by  management  of the  issuer  of
obligations  which may be  present  or may arise as a result of public  interest
questions and preparations to meet such obligations.

                                              Standard & Poor's Ratings Group

Commercial Paper

         A-1:   Commercial   paper  rated  A-1  or  better  has  the   following
characteristics:  (i) the liquidity ratio of its issuer is adequate to meet cash
requirements; (ii) its issuer has outstanding debt rated AA or better; (iii) the
issuer has access to at least two additional sources of borrowing;  and (iv) the
issuer's  basic  earnings and cash flow have an upward trend with allowance made
for unusual circumstances. Typically, the issuer's industry is judged to be well
established and the issuer has a strong position within the industry.













1The  ratings  indicated  herein  are  believed  to be the most  recent  ratings
available  at the  date of this  Statement  of  Additional  Information  for the
securities  listed.  Ratings are  generally  given to  securities at the time of
issuance.  While the rating  agencies may from time to time revise such ratings,
they  undertake  no  obligation  to do so,  and  the  ratings  indicated  do not
necessarily  represent  ratings  which will be given to these  securities on the
date of the Fund's fiscal year-end.


<PAGE>



                                   APPENDIX B

                           Pioneer Cash Reserves Fund
                                 Class A Shares
   

<TABLE>
<S>              <C>           <C>           <C>               <C>           <C>                <C>            

                  Initial       Offering     Sales Charge        Shares      Net Asset Value     Initial Net
     Date        Investment      Price         Included        Purchased        Per Share        Asset Value
   6/22/87        $10,000       $1.0000          0.00%         10,000.000        $1.0000           $10,000

</TABLE>

                     Dividends and Capital Gains Reinvested

                                 Value of Shares
<TABLE>
<S>               <C>                  <C>                <C>              <C>                       

   Date        From Investment       From Cap. Gains      From Dividends   Total Value
                                       Reinvested           Reinvested
 12/31/87        $10,000              $0                  $348              $10,348
 12/31/88        $10,000              $0                 $1,077             $11,077
 12/31/89        $10,000              $0                 $2,052             $12,052
 12/31/90        $10,000              $0                 $2,985             $12,985
 12/31/91        $10,000              $0                 $3,672             $13,672
 12/31/92        $10,000              $0                 $4,091             $14,091
 12/31/93        $10,000              $0                 $4,438             $14,438
 12/31/94        $10,000              $0                 $4,954             $14,954
 12/31/95        $10,000              $0                 $5,727             $15,727
 12/31/96        $10,000              $0                 $6,458             $16,458
 12/31/97        $10,000              $0                 $7,245             $17,245
</TABLE>
    

<PAGE>



                           Pioneer Cash Reserves Fund
                                 Class B Shares

   
<TABLE>
<S>              <C>            <C>           <C>            <C>           <C>                 <C>                         

                                              Sales Charge
                   Initial       Offering       Included        Shares      Net Asset Value     Initial Net
     Date        Investment        Price                      Purchased        Per Share        Asset Value

   3/31/95         $10,000        $1.0000        0.00%        10,000.000        $1.0000           $10,000

</TABLE>
    
                     Dividends and Capital Gains Reinvested

                                 Value of Shares
   
<TABLE>
<S>           <C>                   <C>                 <C>                <C>              <C>                 <C>              
   Date      From Investment       From Cap. Gains     From Dividends      CDSC             Total Valu          CDSC
                                   Reinvested           Reinvested         If Redeemed     If Redeemed            %
 12/31/95      $10,000               $0                 $328               $400            $ 9,928            4.00%
 12/31/96      $10,000               $0                 $722               $400            $10,322            4.00%
 12/31/97      $10,000               $0                $1,140              $300            $10,840            3.00%
</TABLE>
    

<PAGE>



                           Pioneer Cash Reserves Fund
                                 Class C Shares

   
<TABLE>
<S>            <C>            <C>           <C>             <C>           <C>                 <C>              
                                            Sales Charge
                 Initial       Offering       Included        Shares      Net Asset Value     Initial Net
   Date        Investment        Price                      Purchased        Per Share        Asset Value

 1/31/96         $10,000        $1.0000        0.00%        10,000.000        $1.0000           $10,000

</TABLE>
                     Dividends and Capital Gains Reinvested

                                 Value of Shares

<TABLE>
<S>                  <C>                   <C>                 <C>                   <C>                 <C>                 <C>

        Date         From Investment       From Cap. Gains     From Dividends           CDSC             Total Valu          CDSC
                                             Reinvested           Reinvested         If Redeemed        If Redeemed            %
      12/31/96             $10,000               $0                 $335               $100               $10,235            1.00%
      12/31/97             $10,000               $0                 $744                  0               $10,744            0.00%
</TABLE>
    

<PAGE>






                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

The following  securities  indices are well known,  unmanaged measures of market
performance. Advertisements and sales literature for the Fund may refer to these
indices or may present  comparisons  between the performance of the Fund and one
or more of the indices.  Other  indices may also be used,  if  appropriate.  The
indices are not  available  for direct  investment.  The data  presented are not
meant to be  indicative  of the  performance  of the Fund,  do not reflect  past
performance and do not guarantee future results.

S&P 500
This index is a readily available, carefully constructed,  market value weighted
benchmark of common stock  performance.  Currently,  the S&P 500 includes 500 of
the largest stocks (in terms of stock market value) in the U.S.

DOW JONES INDUSTRIAL AVERAGE
This is a total return index based on the  performance of stocks of 30 blue chip
companies widely held by individuals and institutional  investors. The 30 stocks
represent about a fifth of the $8 trillion-plus  market value of all U.S. stocks
and about a fourth of the value of stocks listed on the New York Stock  Exchange
(NYSE).

U.S. SMALL STOCK INDEX
This index is a market value  weighted  index of the ninth and tenth  deciles of
the NYSE, plus stocks listed on the American Stock Exchange and over the counter
with the  same or less  capitalization  as the  upper  bound  of the NYSE  ninth
decile.

U.S. INFLATION
The  Consumer  Price  Index  for All Urban  Consumers  (CPI-U),  not  seasonally
adjusted, is used to measure inflation,  which is the rate of change of consumer
goods prices.  Unfortunately,  the  inflation  rate as derived by the CPI is not
measured  over the same period as the other asset  returns.  All of the security
returns are measured  from one  month-end to the next  month-end.  CPI commodity
prices are collected during the month.  Thus,  measured  inflation rates lag the
other  series  by about  one-half  month.  Prior to  January  1978,  the CPI (as
compared with CPI-U) was used.  Both inflation  measures are  constructed by the
U.S. Department of Labor, Bureau of Labor Statistics, Washington, DC.

S&P/BARRA INDEXES
The S&P/BARRA Growth and Value Indexes are constructed by dividing the stocks in
the S&P 500 according to price-to-book  ratios. The Growth Index contains stocks
with higher price-to-book ratios, and the Value Index contains stocks with lower
price-to-book ratios. Both indexes are market capitalization weighted.

MERRILL LYNCH MICRO-CAP INDEX
The Merrill Lynch  Micro-Cap  Index  represents the  performance of 2,036 stocks
ranging in market capitalization from $50 million to $220 million. Index returns
are calculated monthly.

LONG-TERM U.S. GOVERNMENT BONDS
The total returns on long-term  government bonds after 1977 are constructed with
data from The Wall Street  Journal and are  calculated as the change in the flat
price or  and-interest  price.  From 1926 to 1976,  data are  obtained  from the
government  bond file at the Center for  Research  in  Security  Prices  (CRSP),
Graduate  School of  Business,  University  of  Chicago.  Each year,  a one-bond
portfolio with a term of approximately 20 years and a reasonably  current coupon
was used and whose  returns did not reflect  potential  tax  benefits,  impaired
negotiability or special redemption or call privileges. Where callable bonds had
to be  used,  the term of the bond was  assumed  to be a simple  average  of the
maturity  and first call dates minus the current  date.  The bond was "held" for
the calendar year and returns were computed.

INTERMEDIATE-TERM U.S. GOVERNMENT BONDS
Total returns of  intermediate-term  government  bonds after 1987 are calculated
from The Wall Street  Journal  prices,  using the change in flat price.  Returns
from 1934 to 1986 are obtained from the CRSP government bond file.

Each year,  one-bond  portfolios  are formed,  the bond  chosen is the  shortest
noncallable  bond with a  maturity  not less than five  years,  and this bond is
"held" for the calendar year. Monthly returns are computed. (Bonds with impaired
negotiability or special redemption  privileges are omitted, as are partially or
fully tax-exempt bonds starting with 1943.) From 1934 to 1942,  almost all bonds
with  maturities  near five years were  partially or fully  tax-exempt  and were
selected using the rules described above.  Personal tax rates were generally low
in that  period,  so that yields on  tax-exempt  bonds were similar to yields on
taxable bonds.  From 1926 to 1933, there are few bonds suitable for construction
of a series with a five-year  maturity.  For this period,  five-year  bond yield
estimates are used.

MORGAN STANLEY CAPITAL INTERNATIONAL ("MSCI")
MSCI's  international  indices  are based on the share  prices of  approximately
1,700  companies  listed on stock exchanges in the 22 countries that make up the
MSCI World Index.  MSCI's emerging market indices are comprised of approximately
1000 stocks from 26 countries.

Countries  in the MSCI EAFE Index are:  Australia,  Austria,  Belgium,  Denmark,
Finland,   France,   Germany,  Hong  Kong,  Ireland,   Italy,  Japan,  Malaysia,
Netherlands,  New Zealand,  Norway,  Singapore,  Spain, Sweden,  Switzerland and
United Kingdom.

Countries in the MSCI Emerging Markets Free Index are: Argentina, Brazil, Chile,
China Free, Czech Republic,  Colombia,  Greece,  Hungary, India, Indonesia Free,
Israel,  Jordan,  Korea (at 50%),  Malaysia Free, Mexico Free,  Pakistan,  Peru,
Philippines Free, Poland,  Portugal,  South Africa, Sri Lanka,  Taiwan (at 50%),
Thailand Free, Turkey and Venezuela.

6-MONTH CDs
Data sources include the Federal Reserve Bulletin and The Wall Street Journal.

LONG-TERM U.S. CORPORATE BONDS
Since 1969, corporate bond total returns are represented by the Salomon Brothers
Long-Term  High-Grade  Corporate  Bond  Index.  As  most  large  corporate  bond
transactions  take place over the counter,  a major dealer is the natural source
of these data.  The index  includes  nearly all Aaa- and Aa-rated  bonds with at
least 10 years to maturity.  If a bond is downgraded  during a particular month,
its return for the month is included in the index before  removing the bond from
future portfolios.

From 1926 to 1968 the total  returns  were  calculated  by summing  the  capital
appreciation  returns  and the  income  returns.  For the  period  1946 to 1968,
Ibbotson and Sinquefield  backdated the Salomon  Brothers' index,  using Salomon
Brothers' monthly yield data with a methodology  similar to that used by Salomon
Brothers for 1969 to 1995.  Capital  appreciation  returns were  calculated from
yields  assuming (at the  beginning of each  monthly  holding  period) a 20-year
maturity,   a  bond   price   equal  to  par,   and  a   coupon   equal  to  the
beginning-of-period  yield.  For the  period  1926 to  1945,  Standard  & Poor's
monthly  high-grade  corporate  composite  yield data were  used,  assuming a 4%
coupon and a 20-year maturity.  The conventional  present-value formula for bond
price for the  beginning  and  end-of-month  prices was used.  (This  formula is
presented in Ross,  Stephen A., and Westerfield,  Randolph W. Corporate Finance,
Times Mirror/Mosby,  St. Louis, 1990, p. 97 ["Level-Coupon Bonds"].) The monthly
income return was assumed to be one-twelfth the coupon.

U.S. (30-DAY) TREASURY BILLS
For the U.S.  Treasury  Bill Index,  data from The Wall Street  Journal are used
after 1977; the CRSP government bond file is the source until 1976. Each month a
one-bill  portfolio  containing the shortest-term  bill having not less than one
month to maturity is  constructed.  (The bill's original term to maturity is not
relevant.) To measure  holding  period returns for the one-bill  portfolio,  the
bill is priced as of the last  trading day of the previous  month-end  and as of
the last trading day of the current month.

NATIONAL ASSOCIATION OF REAL ESTATE INVESTMENT TRUSTS ("NAREIT")
EQUITY REIT INDEX
All of the data are  based  upon the last  closing  price of the  month  for all
tax-qualified  REITs  listed  on  the  NYSE,  AMEX  and  NASDAQ.  The  data  are
market-value-weighted.  Prior to 1987 REITs were added to the index the  January
following  their  listing.  Since 1987 newly formed or listed REITs are added to
the total  shares  outstanding  figure in the month that the shares are  issued.
Only  common  shares  issued by the REIT are  included  in the index.  The total
return  calculation  is based upon the weighting at the beginning of the period.
Only  those  REITs  listed for the  entire  period are used in the total  return
calculation.  Dividends are included in the month based upon their payment date.
There is no smoothing of income. Liquidating dividends, whether full or partial,
are treated as income.

RUSSELL U.S. EQUITY INDEXES
The Russell 3000(R) Index (the "Russell 3000") is comprised of the 3,000 largest
U.S. companies as determined by market capitalization representing approximately
98%  of  the  U.S.  equity  market.   The  average  market   capitalization   is
approximately $2.8 billion. The Russell 2500TM Index measures performance of the
2,500 smallest companies in the Russell 3000. The average market  capitalization
is  approximately  $733.4  million,  and the largest company in the index has an
approximate  market  capitalization  of $2.9 billion.  The Russell 2000(R) Index
measures  performance  of the 2,000  smallest  stocks in the Russell  3000;  the
largest company in the index has a market  capitalization of approximately  $1.1
billion. The Russell 1000(R) Index (the "Russell 1000") measures the performance
of the  1,000  largest  companies  in  the  Russell  3000.  The  average  market
capitalization is approximately $7.6 billion.  The smallest company in the index
has an approximate market  capitalization of $1.1 billion.  The Russell MidcapTM
Index measures  performance  of the 800 smallest  companies in the Russell 1000.
The largest  company in the index has an approximate  market  capitalization  of
$8.0 billion.

The  Russell  indexes are  reconstituted  annually as of July 1, based on May 31
market capitalization rankings.

WILSHIRE REAL ESTATE SECURITIES INDEX
The Wilshire Real Estate  Securities Index is a market  capitalization  weighted
index of 120 publicly traded real estate securities,  such as REITs, real estate
operating companies ("REOCs") and partnerships.

The index  contains  performance  data on five  major  categories  of  property:
office, retail,  industrial,  apartment and miscellaneous.  The companies in the
index are 91.66% equity and hybrid REITs and 8.33% REOCs.

STANDARD & POOR'S MIDCAP 400 INDEX
The S&P 400 is a market-capitalization-weighted  index. The performance data for
the index  were  calculated  by taking  the  stocks  presently  in the index and
tracking them backward in time as long as there were prices reported. No attempt
was made to determine  what stocks  "might have been" in the S&P 400 five or ten
years ago had it existed.  Dividends are  reinvested on a monthly basis prior to
June 30, 1991, and are reinvested daily thereafter.

LIPPER BALANCED FUNDS INDEX
This index represents equally weighted  performance,  adjusted for capital gains
distributions  and income  dividends,  of  approximately 30 of the largest funds
with a primary  objective of conserving  principal by maintaining at all times a
balanced portfolio of stocks and bonds.  Typically,  the stock/bond ratio ranges
around 60%/40%.

BANK SAVINGS ACCOUNT
Data sources include the U.S. League of Savings Institutions Sourcebook; average
annual yield on savings  deposits in FSLIC [FDIC] insured  savings  institutions
for the years 1963 to 1987; and The Wall Street Journal thereafter.

Sources:  Ibbotson Associates, Towers Data Systems, Lipper Analytical Services,
Inc. Merrill Lynch and PGI


<PAGE>



                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT

   
<TABLE>
<S>             <C>          <C>           <C>              <C>         <C>             <C>          <C>                   
                               Dow                                        S&P/          S&P/
                 S&P          Jones        U.S. Small                    BARRA          BARRA        Merrill Lynch
                 500        Industrial        Stock         U.S.          500            500           Micro-Cap
                             Average          Index       Inflation      Growth         Value            Index
- ----------------------------------------------------------------------------------------------------------------------
Dec 1925         N/A           N/A             N/A           N/A          N/A            N/A              N/A
Dec 1926        11.62          N/A            0.28          -1.49         N/A            N/A              N/A
Dec 1927        37.49          N/A            22.10         -2.08         N/A            N/A              N/A
Dec 1928        43.61         55.38           39.69         -0.97         N/A            N/A              N/A
Dec 1929        -8.42         -13.64         -51.36         0.20          N/A            N/A              N/A
Dec 1930        -24.90        -30.22         -38.15         -6.03         N/A            N/A              N/A
Dec 1931        -43.34        -49.02         -49.75         -9.52         N/A            N/A              N/A
Dec 1932        -8.19         -16.88          -5.39        -10.30         N/A            N/A              N/A
Dec 1933        53.99         73.72          142.87         0.51          N/A            N/A              N/A
Dec 1934        -1.44          8.08           24.22         2.03          N/A            N/A              N/A
Dec 1935        47.67         43.77           40.19         2.99          N/A            N/A              N/A
Dec 1936        33.92         30.23           64.80         1.21          N/A            N/A              N/A
Dec 1937        -35.03        -28.88         -58.01         3.10          N/A            N/A              N/A
Dec 1938        31.12         33.16           32.80         -2.78         N/A            N/A              N/A
Dec 1939        -0.41          1.31           0.35          -0.48         N/A            N/A              N/A
Dec 1940        -9.78         -7.96           -5.16         0.96          N/A            N/A              N/A
Dec 1941        -11.59        -9.88           -9.00         9.72          N/A            N/A              N/A
Dec 1942        20.34         14.13           44.51         9.29          N/A            N/A              N/A
Dec 1943        25.90         19.06           88.37         3.16          N/A            N/A              N/A
Dec 1944        19.75         17.19           53.72         2.11          N/A            N/A              N/A
Dec 1945        36.44         31.60           73.61         2.25          N/A            N/A              N/A
Dec 1946        -8.07         -4.40          -11.63         18.16         N/A            N/A              N/A
Dec 1947         5.71          7.61           0.92          9.01          N/A            N/A              N/A
Dec 1948         5.50          4.27           -2.11         2.71          N/A            N/A              N/A
Dec 1949        18.79         20.92           19.75         -1.80         N/A            N/A              N/A
Dec 1950        31.71         26.40           38.75         5.79          N/A            N/A              N/A
Dec 1951        24.02         21.77           7.80          5.87          N/A            N/A              N/A
Dec 1952        18.37         14.58           3.03          0.88          N/A            N/A              N/A
Dec 1953        -0.99          2.02           -6.49         0.62          N/A            N/A              N/A
Dec 1954        52.62         51.25           60.58         -0.50         N/A            N/A              N/A
Dec 1955        31.56         26.58           20.44         0.37          N/A            N/A              N/A
Dec 1956         6.56          7.10           4.28          2.86          N/A            N/A              N/A
Dec 1957        -10.78        -8.63          -14.57         3.02          N/A            N/A              N/A
Dec 1958        43.36         39.31           64.89         1.76          N/A            N/A              N/A
Dec 1959        11.96         20.21           16.40         1.50          N/A            N/A              N/A
Dec 1960         0.47         -6.14           -3.29         1.48          N/A            N/A              N/A
Dec 1961        26.89         22.60           32.09         0.67          N/A            N/A              N/A
Dec 1962        -8.73         -7.43          -11.90         1.22          N/A            N/A              N/A
Dec 1963        22.80         20.83           23.57         1.65          N/A            N/A              N/A
</TABLE>


<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT

<TABLE>
<S>             <C>         <C>            <C>             <C>         <C>             <C>            <C>                
                               Dow                                        S&P/          S&P/
                 S&P          Jones        U.S. Small                  BARRA 500        BARRA        Merrill Lynch
                 500        Industrial        Stock         U.S.         Growth          500           Micro-Cap
                             Average          Index       Inflation                     Value            Index
- ----------------------------------------------------------------------------------------------------------------------
Dec 1964        16.48         18.85           23.52         1.19          N/A            N/A              N/A
Dec 1965        12.45         14.39           41.75         1.92          N/A            N/A              N/A
Dec 1966        -10.06        -15.78          -7.01         3.35          N/A            N/A              N/A
Dec 1967        23.98         19.16           83.57         3.04          N/A            N/A              N/A
Dec 1968        11.06          7.93           35.97         4.72          N/A            N/A              N/A
Dec 1969        -8.50         -11.78         -25.05         6.11          N/A            N/A              N/A
Dec 1970         4.01          9.21          -17.43         5.49          N/A            N/A              N/A
Dec 1971        14.31          9.83           16.50         3.36          N/A            N/A              N/A
Dec 1972        18.98         18.48           4.43          3.41          N/A            N/A              N/A
Dec 1973        -14.66        -13.28         -30.90         8.80          N/A            N/A              N/A
Dec 1974        -26.47        -23.58         -19.95         12.20         N/A            N/A              N/A
Dec 1975        37.20         44.75           52.82         7.01         31.72          43.38             N/A
Dec 1976        23.84         22.82           57.38         4.81         13.84          34.93             N/A
Dec 1977        -7.18         -12.84          25.38         6.77         -11.82         -2.57             N/A
Dec 1978         6.56          2.79           23.46         9.03          6.78          6.16             27.76
Dec 1979        18.44         10.55           43.46         13.31        15.72          21.16            43.18
Dec 1980        32.42         22.17           39.88         12.40        39.40          23.59            32.32
Dec 1981        -4.91         -3.57           13.88         8.94         -9.81          0.02              9.18
Dec 1982        21.41         27.11           28.01         3.87         22.03          21.04            33.62
Dec 1983        22.51         25.97           39.67         3.80         16.24          28.89            42.44
Dec 1984         6.27          1.31           -6.67         3.95          2.33          10.52            -14.97
Dec 1985        32.16         33.55           24.66         3.77         33.31          29.68            22.89
Dec 1986        18.47         27.10           6.85          1.13         14.50          21.67             3.45
Dec 1987         5.23          5.48           -9.30         4.41          6.50          3.68             -13.84
Dec 1988        16.81         16.14           22.87         4.42         11.95          21.67            22.76
Dec 1989        31.49         32.19           10.18         4.65         36.40          26.13             8.06
Dec 1990        -3.17         -0.56          -21.56         6.11          0.20          -6.85            -29.55
Dec 1991        30.55         24.19           44.63         3.06         38.37          22.56            57.44
Dec 1992         7.67          7.41           23.35         2.90          5.07          10.53            36.62
Dec 1993         9.99         16.94           20.98         2.75          1.68          18.60            31.32
Dec 1994         1.31          5.06           3.11          2.67          3.13          -0.64             1.81
Dec 1995        37.43         36.84           34.46         2.54         38.13          36.99            30.70
Dec 1996        23.07         28.84           17.62         3.32         23.96          21.99            13.88
Dec 1997        33.36         24.88           22.78         1.92         36.52          29.98            24.61

</TABLE>

<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT
<TABLE>
<S>               <C>         <C>                <C>        <C>           <C>              <C>           
                  Long-       Intermediate-      MSCI                      Long-
                  Term          Term U.S.        EAFE         6-         Term U.S.          U.S.
               U.S. Gov't      Government       (Net of      Month       Corporate         T-Bill
                  Bonds           Bonds         Taxes)        CDs          Bonds          (30-Day)
- ------------------------------------------------------------------------------------------------------
Dec 1925           N/A             N/A            N/A         N/A           N/A             N/A
Dec 1926          7.77            5.38            N/A         N/A           7.37            3.27
Dec 1927          8.93            4.52            N/A         N/A           7.44            3.12
Dec 1928          0.10            0.92            N/A         N/A           2.84            3.56
Dec 1929          3.42            6.01            N/A         N/A           3.27            4.75
Dec 1930          4.66            6.72            N/A         N/A           7.98            2.41
Dec 1931          -5.31           -2.32           N/A         N/A          -1.85            1.07
Dec 1932          16.84           8.81            N/A         N/A          10.82            0.96
Dec 1933          -0.07           1.83            N/A         N/A          10.38            0.30
Dec 1934          10.03           9.00            N/A         N/A          13.84            0.16
Dec 1935          4.98            7.01            N/A         N/A           9.61            0.17
Dec 1936          7.52            3.06            N/A         N/A           6.74            0.18
Dec 1937          0.23            1.56            N/A         N/A           2.75            0.31
Dec 1938          5.53            6.23            N/A         N/A           6.13           -0.02
Dec 1939          5.94            4.52            N/A         N/A           3.97            0.02
Dec 1940          6.09            2.96            N/A         N/A           3.39            0.00
Dec 1941          0.93            0.50            N/A         N/A           2.73            0.06
Dec 1942          3.22            1.94            N/A         N/A           2.60            0.27
Dec 1943          2.08            2.81            N/A         N/A           2.83            0.35
Dec 1944          2.81            1.80            N/A         N/A           4.73            0.33
Dec 1945          10.73           2.22            N/A         N/A           4.08            0.33
Dec 1946          -0.10           1.00            N/A         N/A           1.72            0.35
Dec 1947          -2.62           0.91            N/A         N/A          -2.34            0.50
Dec 1948          3.40            1.85            N/A         N/A           4.14            0.81
Dec 1949          6.45            2.32            N/A         N/A           3.31            1.10
Dec 1950          0.06            0.70            N/A         N/A           2.12            1.20
Dec 1951          -3.93           0.36            N/A         N/A          -2.69            1.49
Dec 1952          1.16            1.63            N/A         N/A           3.52            1.66
Dec 1953          3.64            3.23            N/A         N/A           3.41            1.82
Dec 1954          7.19            2.68            N/A         N/A           5.39            0.86
Dec 1955          -1.29           -0.65           N/A         N/A           0.48            1.57
Dec 1956          -5.59           -0.42           N/A         N/A          -6.81            2.46
Dec 1957          7.46            7.84            N/A         N/A           8.71            3.14
Dec 1958          -6.09           -1.29           N/A         N/A          -2.22            1.54
Dec 1959          -2.26           -0.39           N/A         N/A          -0.97            2.95
Dec 1960          13.78           11.76           N/A         N/A           9.07            2.66
</TABLE>


<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT

<TABLE>
<S>           <C>            <C>                 <C>         <C>          <C>              <C>                      
                  Long-       Intermediate-      MSCI                      Long-
                  Term          Term U.S.        EAFE         6-         Term U.S.          U.S.
               U.S. Gov't      Government       (Net of      Month       Corporate         T-Bill
                  Bonds           Bonds         Taxes)        CDs          Bonds          (30-Day)
- ------------------------------------------------------------------------------------------------------
Dec 1961          0.97            1.85            N/A         N/A           4.82            2.13
Dec 1962          6.89            5.56            N/A         N/A           7.95            2.73
Dec 1963          1.21            1.64            N/A         N/A           2.19            3.12
Dec 1964          3.51            4.04            N/A        4.17           4.77            3.54
Dec 1965          0.71            1.02            N/A        4.68          -0.46            3.93
Dec 1966          3.65            4.69            N/A        5.76           0.20            4.76
Dec 1967          -9.18           1.01            N/A        5.47          -4.95            4.21
Dec 1968          -0.26           4.54            N/A        6.45           2.57            5.21
Dec 1969          -5.07           -0.74           N/A        8.70          -8.09            6.58
Dec 1970          12.11           16.86         -11.66       7.06          18.37            6.52
Dec 1971          13.23           8.72           29.59       5.36          11.01            4.39
Dec 1972          5.69            5.16           36.35       5.39           7.26            3.84
Dec 1973          -1.11           4.61          -14.92       8.60           1.14            6.93
Dec 1974          4.35            5.69          -23.16       10.20         -3.06            8.00
Dec 1975          9.20            7.83           35.39       6.51          14.64            5.80
Dec 1976          16.75           12.87          2.54        5.22          18.65            5.08
Dec 1977          -0.69           1.41           18.06       6.11           1.71            5.12
Dec 1978          -1.18           3.49           32.62       10.21         -0.07            7.18
Dec 1979          -1.23           4.09           4.75        11.90         -4.18           10.38
Dec 1980          -3.95           3.91           22.58       12.33         -2.76           11.24
Dec 1981          1.86            9.45           -2.28       15.50         -1.24           14.71
Dec 1982          40.36           29.10          -1.86       12.18         42.56           10.54
Dec 1983          0.65            7.41           23.69       9.65           6.26            8.80
Dec 1984          15.48           14.02          7.38        10.65         16.86            9.85
Dec 1985          30.97           20.33          56.16       7.82          30.09            7.72
Dec 1986          24.53           15.14          69.44       6.30          19.85            6.16
Dec 1987          -2.71           2.90           24.63       6.59          -0.27            5.47
Dec 1988          9.67            6.10           28.27       8.15          10.70            6.35
Dec 1989          18.11           13.29          10.54       8.27          16.23            8.37
Dec 1990          6.18            9.73          -23.45       7.85           6.78            7.81
Dec 1991          19.30           15.46          12.13       4.95          19.89            5.60
Dec 1992          8.05            7.19          -12.17       3.27           9.39            3.51
Dec 1993          18.24           11.24          32.56       2.88          13.19            2.90
Dec 1994          -7.77           -5.14          7.78        5.40          -5.76            3.90
Dec 1995          31.67           16.80          11.21       5.21          27.20            5.60
Dec 1996          -0.93           2.10           6.05        5.21           1.40            5.21
Dec 1997          15.85           8.38           1.78        5.71          12.95            5.26
</TABLE>


<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT

<TABLE>
<S>              <C>         <C>          <C>             <C>            <C>              <C>              <C>
                 NAREIT                                                   Lipper           MSCI
                 Equity       Russell       Wilshire                     Balanced        Emerging           Bank
                  REIT         2000       Real Estate        S&P           Fund          Markets          Savings
                 Index         Index       Securities        400           Index        Free Index        Account
- -----------------------------------------------------------------------------------------------------------------------
Dec 1925          N/A           N/A           N/A            N/A            N/A            N/A              N/A
Dec 1926          N/A           N/A           N/A            N/A            N/A            N/A              N/A
Dec 1927          N/A           N/A           N/A            N/A            N/A            N/A              N/A
Dec 1928          N/A           N/A           N/A            N/A            N/A            N/A              N/A
Dec 1929          N/A           N/A           N/A            N/A            N/A            N/A              N/A
Dec 1930          N/A           N/A           N/A            N/A            N/A            N/A              5.30
Dec 1931          N/A           N/A           N/A            N/A            N/A            N/A              5.10
Dec 1932          N/A           N/A           N/A            N/A            N/A            N/A              4.10
Dec 1933          N/A           N/A           N/A            N/A            N/A            N/A              3.40
Dec 1934          N/A           N/A           N/A            N/A            N/A            N/A              3.50
Dec 1935          N/A           N/A           N/A            N/A            N/A            N/A              3.10
Dec 1936          N/A           N/A           N/A             N/A            N/A            N/A              3.20
Dec 1937          N/A           N/A           N/A            N/A            N/A            N/A              3.50
Dec 1938          N/A           N/A           N/A            N/A            N/A            N/A              3.50
Dec 1939          N/A           N/A           N/A            N/A            N/A            N/A              3.40
Dec 1940          N/A           N/A           N/A            N/A            N/A            N/A              3.30
Dec 1941          N/A           N/A           N/A            N/A            N/A            N/A              3.10
Dec 1942          N/A           N/A           N/A            N/A            N/A            N/A              3.00
Dec 1943          N/A           N/A           N/A            N/A            N/A            N/A              2.90
Dec 1944          N/A           N/A           N/A            N/A            N/A            N/A              2.80
Dec 1945          N/A           N/A           N/A            N/A            N/A            N/A              2.50
Dec 1946          N/A           N/A           N/A            N/A            N/A            N/A              2.20
Dec 1947          N/A           N/A           N/A            N/A            N/A            N/A              2.30
Dec 1948          N/A           N/A           N/A            N/A            N/A            N/A              2.30
Dec 1949          N/A           N/A           N/A            N/A            N/A            N/A              2.40
Dec 1950          N/A           N/A           N/A            N/A            N/A            N/A              2.50
Dec 1951          N/A           N/A           N/A            N/A            N/A            N/A              2.60
Dec 1952          N/A           N/A           N/A            N/A            N/A            N/A              2.70
Dec 1953          N/A           N/A           N/A            N/A            N/A            N/A              2.80
Dec 1954          N/A           N/A           N/A            N/A            N/A            N/A              2.90
Dec 1955          N/A           N/A           N/A            N/A            N/A            N/A              2.90
Dec 1956          N/A           N/A           N/A            N/A            N/A            N/A              3.00
Dec 1957          N/A           N/A           N/A            N/A            N/A            N/A              3.30
Dec 1958          N/A           N/A           N/A            N/A            N/A            N/A              3.38
Dec 1959          N/A           N/A           N/A            N/A            N/A            N/A              3.53
Dec 1960          N/A           N/A           N/A            N/A           5.77            N/A              3.86
Dec 1961          N/A           N/A           N/A            N/A           20.59           N/A              3.90
</TABLE>

<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT
<TABLE>
<S>             <C>          <C>          <C>              <C>           <C>             <C>              <C> 

                 NAREIT                                                   Lipper          MSCI
                 Equity       Russell       Wilshire                     Balanced        Emerging           Bank
                  REIT         2000       Real Estate        S&P           Fund          Markets          Savings
                 Index         Index       Securities        400           Index        Free Index        Account
- -----------------------------------------------------------------------------------------------------------------------
Dec 1962          N/A           N/A           N/A            N/A           -6.80           N/A              4.08
Dec 1963          N/A           N/A           N/A            N/A           13.10           N/A              4.17
Dec 1964          N/A           N/A           N/A            N/A           12.36           N/A              4.19
Dec 1965          N/A           N/A           N/A            N/A           9.80            N/A              4.23
Dec 1966          N/A           N/A           N/A            N/A           -5.86           N/A              4.45
Dec 1967          N/A           N/A           N/A            N/A           15.09           N/A              4.67
Dec 1968          N/A           N/A           N/A            N/A           13.97           N/A              4.68
Dec 1969          N/A           N/A           N/A            N/A           -9.01           N/A              4.80
Dec 1970          N/A           N/A           N/A            N/A           5.62            N/A              5.14
Dec 1971          N/A           N/A           N/A            N/A           13.90           N/A              5.30
Dec 1972          8.01          N/A           N/A            N/A           11.13           N/A              5.37
Dec 1973         -15.52         N/A           N/A            N/A          -12.24           N/A              5.51
Dec 1974         -21.40         N/A           N/A            N/A          -18.71           N/A              5.96
Dec 1975         19.30          N/A           N/A            N/A           27.10           N/A              6.21
Dec 1976         47.59          N/A           N/A            N/A           26.03           N/A              6.23
Dec 1977         22.42          N/A           N/A            N/A           -0.72           N/A              6.39
Dec 1978         10.34          N/A          13.04           N/A           4.80            N/A              6.56
Dec 1979         35.86         43.09         70.81           N/A           14.67           N/A              7.29
Dec 1980         24.37         38.58         22.08           N/A           19.70           N/A              8.78
Dec 1981          6.00         2.03           7.18           N/A           1.86            N/A             10.71
Dec 1982         21.60         24.95         24.47          22.68          30.63           N/A             11.19
Dec 1983         30.64         29.13         27.61          26.10          17.44           N/A              9.71
Dec 1984         20.93         -7.30         20.64           1.18          7.46            N/A              9.92
Dec 1985         19.10         31.05         22.20          35.58          29.83           N/A              9.02
Dec 1986         19.16         5.68          20.30          16.21          18.43           N/A              7.84
Dec 1987         -3.64         -8.77         -7.86          -2.03          4.13            N/A              6.92
Dec 1988         13.49         24.89         24.18          20.87          11.18          40.43             7.20
Dec 1989          8.84         16.24          2.37          35.54          19.70          64.96             7.91
Dec 1990         -15.35       -19.51         -33.46         -5.12          0.66           -10.55            7.80
Dec 1991         35.70         46.05         20.03          50.10          25.83          59.91             4.61
Dec 1992         14.59         18.41          7.36          11.91          7.46           11.40             2.89
Dec 1993         19.65         18.91         15.24          13.96          11.95          74.83             2.73
Dec 1994          3.17         -1.82          1.64          -3.57          -2.05          -7.32             4.96
Dec 1995         15.27         28.44         13.65          30.94          24.89          -5.21             5.24
Dec 1996         35.26         16.53         36.87          19.20          13.01           6.03             4.95
Dec 1997         20.29         22.36         19.80          32.26          20.05          -11.59            5.17

</TABLE>
    
<PAGE>


                                                           

                                   APPENDIX C

                            OTHER PIONEER INFORMATION

The Pioneer group of mutual funds was  established  in 1928 with the creation of
Pioneer Fund.  Pioneer is one of the oldest and most experienced  money managers
in the United States.

As of December 31, 1997,  PMC employed a  professional  investment  staff of 58,
with a  combined  average  of 12 years'  experience  in the  financial  services
industry.

Total  assets  of  all  Pioneer   mutual  funds  at  December  31,  1997,   were
approximately  $19.8  billion   representing   1,177,148   shareholder  accounts
consisting of 791,468 non-retirement accounts and 385,680 retirement accounts.



<PAGE>








                           PIONEER MONEY MARKET TRUST

                            PART C. OTHER INFORMATION

Item 24.  Financial Statements and Exhibits

          (a)  Financial Statements:

   
               The financial highlights of the Registrant for the fiscal year
               ended December 31, 1997 are included in Part A of the
               Registration Statement and the financial statements of the
               Registrant are incorporated by reference into Part B of the
               Registration Statement from the 1997 Annual Report to
               Shareholders for the year ended December 31, 1997 (filed
               electronically on February 20, 1998 file no. 33-13179; accession
               number 0000812195-98-000003).
    

          (b)  Exhibits:

               1.   Agreement and Declaration of Trust (Delaware Business
                    Trust)*

               1.1  Establishment and Designation of Classes for Pioneer Cash
                    Reserves Fund**

               2.   By-laws (Delaware Business Trust)*

               3.   None

               4.   Specimen Stock Certificate*

               5.   Management Contract between Registrant, on behalf of each
                    series, and Pioneering Management Corporation and schedule
                    of substantially similar omitted documents*

               6.   Underwriting Agreement between Registrant, on behalf of each
                    series, and Pioneer Funds Distributor, Inc.*

               7.   None

               8.   Custodian Agreement with Brown Brothers Harriman & Co.*

               9.   Investment Company Service Agreement*

               10.  Opinion of Morris, Nichols, Arsht and Tunnell*

                                       C-1
<PAGE>

               11.  Consent of Arthur Andersen LLP+

               12.  None

               13.  Stock Purchase Agreement*

               14.  None

               15.1 Amended Class A Rule 12b-1 Distribution Plan*

               15.2 Class B Rule 12b-1 Distribution Plan on behalf of Pioneer
                    Cash Reserves Fund*

               15.3 Class C Rule 12b-1 Distribution Plan on behalf of Pioneer
                    Cash Reserves Fund**

               16.  Description of Average Annual Total Return and Yield
                    Calculation*

               17.  Financial Data Schedules+

               18.  Multiple Class Plan Pursuant to Rule 18f-3 for Pioneer Cash
                    Reserves Fund**

               19.  Powers of Attorney*
        
               19.1 Power of Attorney for Mary K. Bush+ 
    
- ------------------------

   

+    Filed herewith
*    Incorporated by reference from the Registrant's Post-Effective Amendment
     No. 12 to the Registration Statement as filed electronically with the
     Securities and Exchange Commission on March 29, 1995 (accession number
     0000812195-95-000013).

**   Incorporated by reference from the Registrant's Post-Effective Amendment
     No. 13 to the Registration Statement as filed electronically with the
     Securities and Exchange Commission on April 29, 1996 (accession number
     0000812195-96-000009).
    

Item 25.  Persons Controlled by or Under Common Control with Registrant

         No  person  is  controlled  by  the   Registrant.   A  common   control
relationship could exist from a management  perspective because the Chairman and
President of the Registrant owns  approximately 14% of the outstanding shares of
The Pioneer Group, Inc. (PGI), the parent company of the Registrant's investment
adviser,  and certain  Trustees or officers of the  Registrant  (i) hold similar
positions with other investment  companies advised by PGI and (ii) are directors
or  officers of PGI and/or its direct or indirect  subsidiaries.  The  following
lists  all  U.S.  and the  principal  non-U.S.  subsidiaries  of PGI  and  those
registered  investment  companies  with a common or  similar  Board of  Trustees
advised by PGI.

   
<TABLE>
<S>                                                 <C>          <C>                <C>
                                                   Owned By    Percent of Shares    State/Country of
                     Company                                                        Incorporation
Pioneering Management Corp. (PMC)                   PGI          100%                DE
Pioneer Funds Distributor, Inc. (PFD)               PMC          100%                MA
Pioneer Explorer, Inc. (PEI)                        PMC          100%                DE
Pioneer Fonds Marketing GmbH (GmbH)                 PFD          100%                Germany
Pioneer Forest, Inc. (PFI)                          PGI          100%                DE
CJSC "Forest-Starma" (Forest-Starma)                PFI          95%                 Russia
Pioneer Metals and Technology, Inc. (PMT)           PGI          100%                DE
Pioneer Capital Corp. (PCC)                         PGI          100%                DE
Pioneer SBIC Corp.                                  PCC          100%                MA
Pioneer Real Estate Advisors, Inc. (PREA)           PGI          100%                DE
Pioneer Management (Ireland) Ltd. (PMIL)            PGI          100%                Ireland
Pioneer Plans Corporation (PPC)                     PGI          100%                DE
PIOGlobal Corp. (PIOGlobal)                         PGI          100%                DE
Pioneer Investments Corp. (PIC)                     PGI          100%                MA
Pioneer Goldfields Holdings, Inc. (PGH)             PGI          100%                DE
Pioneer Goldfields Ltd. (PGL)                       PGH          100%                Guernsey
Teberebie Goldfields Ltd. (TGL)                     PGL          90%                 Ghana
Pioneer Omega, Inc. (Omega)                         PGI          100%                DE
Pioneer First Russia, Inc. (First Russia)           Omega        81.65%              DE
Pioneering Services Corp. (PSC)                     PGI          100%                MA
Pioneer International Corp. (PIntl)                 PGI          100%                DE
Pioneer First Polish Trust Fund JSC, S.A. (First
Polish)                                             PIntl        100%                Poland
Pioneer Czech Investment Company, A.S.
(Pioneer Czech)                                     PIntl        100%                Czech Republic
</TABLE>
Registered  investment  companies that are parties to management  contracts with
PMC:

Funds                                               Business Trust
Pioneer International Growth Fund                   MA
Pioneer World Equity Fund                           DE
Pioneer Europe Fund                                 MA
Pioneer Emerging Markets Fund                       DE
Pioneer India Fund                                  DE
Pioneer Growth Trust                                MA
Pioneer Mid-Cap Fund                                DE
Pioneer Growth Shares                               DE
Pioneer Small Company Fund                          DE
Pioneer Fund                                        DE
Pioneer II                                          DE
Pioneer Real Estate Shares                          DE
Pioneer Short-Term Income Trust                     MA
Pioneer America Income Trust                        MA
Pioneer Bond Fund                                   MA
Pioneer Balanced Fund                               DE
Pioneer Intermediate Tax-Free Fund                  MA
Pioneer Tax-Free Income Fund                        DE
Pioneer Money Market Trust                          DE
Pioneer Variable Contracts Trust                    DE
Pioneer Interest Shares                             DE
Pioneer Micro-Cap Fund                              DE

         The  following  table lists John F. Cogan,  Jr.'s  positions  with the
investment  companies,  PGI and  principal  direct or indirect PGI  subsidiaries
referenced above and the Registrant's counsel.

                                                   Trustee/
         Entity        Chairman    President       Director          Other
Pioneer mutual funds
                           X           X              X
PGL
                           X           X              X
PGI
                           X           X              X
PPC
                                       X              X
PIC
                                       X              X
PIntl
                                       X              X
PMT
                                       X              X
Omega
                                       X              X
PIOGlobal
                                       X              X
First Russia
                                       X              X
PCC
                                                      X
PSC
                                                      X
PMIL
                                                      X
PEI
                                                      X
PFI
                                                      X
PREA
                                                      X
Forest-Starma
                                                      X
PMC
                           X                          X
PFD
                           X                          X
TGL
                           X                          X
First Polish
                                                              Chairman of
                                                              Supervisory Board

GmbH                                                          Chairman of
                                                              Supervisory Board

Pioneer Czech                                                 Chairman of
                                                              Supervisory Board

Hale and Dorr LLP                                             Partner
    

Item 26. Number of Holders of Securities

   
                  The following table sets forth the approximate number of
record holders of each class of shares of Pioneer Cash Reserves Fund as of March
31, 1998:
    

                                      C-4

<PAGE>

   
                                                 Number of
                                              Record Holders

                  Class A                   Class B              Class C

                  15,696                      1,284                335
    


Item 27. Indemnification

                  Except pursuant to the Agreement and Declaration of Trust,
establishing the Registrant as a Trust under Delaware law, there is no contract,
arrangement or statute under which any director, officer, underwriter or
affiliated person of the Registrant is insured or indemnified. The Agreement and
Declaration of Trust provides that no Trustee or officer will be indemnified
against any liability to which the Registrant would otherwise be subject by
reason of willful misfeasance, bad faith, gross negligence or reckless disregard
of such person's duties.

Item 28. Business and Other Connections of Investment Adviser

                  All of the information required by this item is set forth in
the Forms ADV, as amended, of Pioneering Management Corporation. The following
sections of such Forms ADV are incorporated herein by reference:

                  (a)      Items 1 and 2 of Part 2;

                  (b)      Section 6, Business Background, of each
                           Schedule D.

Item 29. Principal Underwriter

                  (a)      See Item 25 above.

                  (b)      Directors and Officers of PFD:

                         Positions and Offices         Positions and Offices
         Name               with Underwriter              with Registrant

John F. Cogan, Jr.          Director and Chairman          Chairman of the
                                                           Board, President
                                                           and Trustee

Robert L. Butler            Director and President         None

David D. Tripple            Director                       Executive Vice
                                                           President and
                                                           Trustee

Steven M. Graziano          Senior Vice President          None

Stephen W. Long             Senior Vice President          None

Barry G. Knight             Vice President                 None

William A. Misata           Vice President                 None

Anne W. Patenaude           Vice President                 None

Elizabeth B. Bennett        Vice President                 None

Gail A. Smyth               Vice President                 None

Constance D. Spiros         Vice President                 None

Marcy L. Supovitz           Vice President                 None

Mary Kleeman                Vice President                 None

Steven R. Berke             Assistant Vice President       None

Steven H. Forss             Assistant Vice President       None

Mary Sue Hoban              Assistant Vice President       None

Debra A. Levine             Assistant Vice President       None

Junior Roy McFarland        Assistant Vice President       None

Marie E. Moynihan           Assistant Vice President       None

William H. Keough           Treasurer                      Treasurer

Roy P. Rossi                Assistant Treasurer            None

Joseph P. Barri             Clerk                          Secretary

Robert P. Nault             Assistant Clerk                Assistant Secretary

The principal  business address of each of these individuals is 60 State Street,
Boston, Massachusetts 02109-1820.

                  (c) Not applicable.

Item 30. Location of Accounts and Records

                  The accounts and records are maintained at the Registrant's
office at 60 State Street, Boston, Massachusetts 02109; contact the Treasurer.

Item 31. Management Services

                  The Registrant is a party to one contract, described in the
Prospectus and the Statement of Additional Information, under which it receives
management and advisory services from Pioneering Management Corporation.

Item 32.  Undertakings

                                      C-6

<PAGE>

                  The Registrant hereby undertakes to furnish each person to
whom a prospectus is delivered with a copy of the Registrant's latest Annual
Report to shareholders upon request and without charge.

                                      C-7

<PAGE>

                                   SIGNATURES

   
         Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all the
requirements for effectiveness of this Post-Effective Amendment No. 15 (the
"Amendment") to the Registration Statement pursuant to Rule 485(b) under the
Securities Act of 1933 and has duly caused this Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Boston and
Commonwealth of Massachusetts, on the 29th day of April, 1998.
    

                                            PIONEER MONEY MARKET TRUST



                                            By:/s/John F. Cogan, Jr.
                                               John F. Cogan, Jr.
                                               President

         Pursuant to the requirements of the Securities Act of 1933, this
Amendment No. 15 has been signed below by the following persons in the
capacities and on the dates indicated:

         Signature                                        Date

Principal Executive Officer:        )
                                    )
/s/John F. Cogan, Jr.               )                 April 29, 1998
John F. Cogan, Jr.                  )
                                    )
                                    )
Principal Financial and             )
Accounting Officer:                 )
                                    )
/s/William H. Keough                )
William H. Keough                   )


                                    )
/s/John F. Cogan, Jr.               )                 April 29, 1998
John F. Cogan, Jr.                  )

   
Mary K. Bush*
Mary K. Bush
    
                                    )
Richard H. Egdahl, M.D.*            )
Richard H. Egdahl, M.D.             )
                                    )
John W. Kendrick*                   )
John W. Kendrick                    )
                                    )
Marguerite A. Piret*                )
Marguerite A. Piret                 )
                                    )
David D. Tripple*                   )
David D. Tripple                    )
                                    )
Stephen K. West*                    )
Stephen K. West                     )
                                    )
John Winthrop*                      )
John Winthrop                       )
                                    )
Margaret B.W. Graham*               )
Margaret B.W. Graham                )

*By      /s/John F. Cogan, Jr.                       April 29, 1998
         John F. Cogan, Jr.
         Attorney-in-Fact


<PAGE>

                                  Exhibit Index

Exhibit
Number              Document Title

   
    11.             Consent of Arthur Andersen LLP

    17.             Financial Data Schedules

    19.1            Power of Attorney for Mary K. Bush
    



                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent public accountants, we hereby consent to the use of our report on
Pioneer Money Market Trust dated  February 2, 1998 (and to all references to our
firm)  included  in or  made a  part  of  Post-Effective  Amendment  No.  15 and
Amendment  No. 16 to  Registration  Statement  File Nos.  33-13179 and 811-5099,
respectively.


                                                       /s/ ARTHUR ANDERSEN LLP
                                                       ARTHUR ANDERSEN LLP



Boston, Massachusetts
April 27, 1998




                          PIONEER EMERGING MARKETS FUND
                               PIONEER EUROPE FUND
                              PIONEER GROWTH TRUST
                               PIONEER INDIA FUND
                        PIONEER INTERNATIONAL GROWTH FUND
                            PIONEER WORLD EQUITY FUND
                              PIONEER GROWTH SHARES
                              PIONEER MID-CAP FUND
                           PIONEER SMALL COMPANY FUND
                             PIONEER MICRO-CAP FUND
                              PIONEER BALANCED FUND
                                  PIONEER FUND
                                   PIONEER II
                           PIONEER REAL ESTATE SHARES
                          PIONEER AMERICA INCOME TRUST
                                PIONEER BOND FUND
                         PIONEER SHORT TERM INCOME TRUST
                       PIONEER INTERMEDIATE TAX-FREE FUND
                           PIONEER MONEY MARKET TRUST


                                POWER OF ATTORNEY

                              Dated October 7, 1997

         I,  the  undersigned  Trustee  of each of the  above-listed  registered
investment  companies  (each  a  "Fund"),  each a  Delaware  or a  Massachusetts
business  trust, do hereby  constitute and appoint John F. Cogan,  Jr., David D.
Tripple,  and Joseph P. Barri,  and each of them acting  singly,  to be my true,
sufficient  and lawful  attorneys,  with full power to each of them, and each of
them  acting  singly,  to sign for me, in my name and in my capacity as trustee,
any and all amendments to the Registration Statement on Form N-1A to be filed by
each Fund under the Investment Company Act of 1940, as amended (the "1940 Act"),
and under the Securities Act of 1933, as amended (the "1933 Act"),  with respect
to the  offering  of its  shares of  beneficial  interest  and any and all other
documents and papers relating thereto, and generally to do all such things in my
name and on my behalf in my  capacity  as trustee to enable  each Fund to comply
with the 1940 Act and the 1933 Act, and all  requirements  of the Securities and
Exchange Commission thereunder,  hereby ratifying and confirming my signature as
it may be signed by said  attorneys or each of them to any and all amendments to
said Registration Statement.

         IN WITNESS WHEREOF,  I have hereunder set my hand on this Instrument as
of the date first written above.


 
                                                /s/ Mary K. Bush

                                                Mary K. Bush, Trustee






 


<TABLE> <S> <C>

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<CIK> 0000812195
<NAME> PIONEER CASH RESERVES FUND
<SERIES>
   <NUMBER> 001
   <NAME> PIONEER CASH RESERVES FUND CLASS A
              
<S>                             <C>
<PERIOD-TYPE>                   YEAR
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<PERIOD-END>                               DEC-31-1997
<INVESTMENTS-AT-COST>                        254925168
<INVESTMENTS-AT-VALUE>                       254925168
<RECEIVABLES>                                  6753550
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<SHARES-COMMON-STOCK>                        209317304
<SHARES-COMMON-PRIOR>                        189621995
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<ACCUMULATED-NET-GAINS>                       (276063)
<OVERDISTRIBUTION-GAINS>                             0
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<NET-ASSETS>                                 249055375
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                             12486378
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 2130309
<NET-INVESTMENT-INCOME>                       10356069
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<NET-CHANGE-FROM-OPS>                         10356069
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<DISTRIBUTIONS-OF-INCOME>                      9482518
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<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
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<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                2381343
<AVERAGE-NET-ASSETS>                         202232803        
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                    .05
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                               .05
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                    .94
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000812195
<NAME> PIONEER CASH RESERVES FUND
<SERIES>
   <NUMBER> 002
   <NAME> PIONEER CASH RESERVES FUND CLASS B
                
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<INVESTMENTS-AT-COST>                        254925168
<INVESTMENTS-AT-VALUE>                       254925168
<RECEIVABLES>                                  6753550
<ASSETS-OTHER>                                    5189
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               261683907
<PAYABLE-FOR-SECURITIES>                       9500000
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      3128532
<TOTAL-LIABILITIES>                           12628532
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     249331438
<SHARES-COMMON-STOCK>                         32477169
<SHARES-COMMON-PRIOR>                         10341561
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       (276063)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                 249055375
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                             12486378
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 2130309
<NET-INVESTMENT-INCOME>                       10356069
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                         10356069
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       751165
<DISTRIBUTIONS-OF-GAINS>                             0
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<NUMBER-OF-SHARES-SOLD>                       68418680
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<SHARES-REINVESTED>                             673272
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<ARTICLE> 6
<CIK> 0000812195
<NAME> PIONEER CASH RESERVES FUND
<SERIES>
   <NUMBER> 003
   <NAME> PIONEER CASH RESERVES FUND CLASS C
              
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<INVESTMENTS-AT-COST>                        254925168
<INVESTMENTS-AT-VALUE>                       254925168
<RECEIVABLES>                                  6753550
<ASSETS-OTHER>                                    5189
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               261683907
<PAYABLE-FOR-SECURITIES>                       9500000
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      3128532
<TOTAL-LIABILITIES>                           12628532
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     249331438
<SHARES-COMMON-STOCK>                          7536965
<SHARES-COMMON-PRIOR>                           911816
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<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       (276063)        
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<ACCUM-APPREC-OR-DEPREC>                             0
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<OTHER-INCOME>                                       0
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<NET-INVESTMENT-INCOME>                       10356069
<REALIZED-GAINS-CURRENT>                             0
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<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       122386
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                       51993154
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<SHARES-REINVESTED>                             110548
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<ACCUMULATED-GAINS-PRIOR>                     (276063)
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<OVERDIST-NET-GAINS-PRIOR>                           0
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<INTEREST-EXPENSE>                                   0
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<AVERAGE-NET-ASSETS>                           3056026     
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<PER-SHARE-NII>                                    .04
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                               .04
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
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<EXPENSE-RATIO>                                   1.79
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
                

</TABLE>


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