MAS FUNDS /MA/
485BPOS, 1998-01-29
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<PAGE>
   

   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 29, 1998

    

                                                                File No. 2-89729
                                                               File No. 811-3980

- --------------------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                              ------------------

                                   FORM N-1A

          REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933            [ ]

   

                      POST-EFFECTIVE AMENDMENT NO. 46                        [x]

    

                                      and

      REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940        [ ]

   

                             AMENDMENT NO. 49                                [x]

    

                                   MAS FUNDS
                          --------------------------
                          (Exact Name of Registrant)
                      c/o Miller Anderson & Sherrerd, LLP
                               One Tower Bridge
                                 P.O. Box 868
                       West Conshohocken, PA 19428-0868
              --------------------------------------------------
              (Address of Principal Executive Offices) (Zip Code)

      Registrant's Telephone Number, including Area Code: (610) 940-5065

                             Ms. Lorraine Truten
                               One Tower Bridge
                       West Conshohocken, PA 19428-0868
                    ---------------------------------------
                    (Name and Address of Agent for Service)
                                  Copies to:

                          John H. Grady, Jr. Esquire
                          Morgan, Lewis & Bockius LLP
                              1800 M Street, N.W.
                            Washington, D.C. 20036

   

- --------------------------------------------------------------------------------
    Title of Securities Being Registered . . . Units of Beneficial Interest

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

   

    X   Immediately upon filing pursuant to paragraph (b), or
        On [date] pursuant to paragraph (b), or
        60 days after filing pursuant to paragraph (a), or
        On [date] pursuant to paragraph (a) of Rule 485, or
        75 days after filing pursuant to paragraph (a) of Rule 485.

- --------------------------------------------------------------------------------
    

                                      -1-

<PAGE>

   

                                   MAS FUNDS

    

                        POST-EFFECTIVE AMENDMENT NO. 46
                             CROSS REFERENCE SHEET

   
<TABLE>
<CAPTION>

Na ITEM NO.                                            LOCATION

==============================================================================================

PART A

<S>        <C>                                         <C>               
 Item 1.   Cover Page                                  Cover Page
 Item 2.   Synopsis                                    Prospectus Summary
 Item 3.   Condensed Financial Information             Financial Highlights
 Item 4.   General Description of Registrant           Investment Limitations; Portfolio

                                                       Summary;  Prospectus Glossary:
                                                       Strategies and Investments; Risk
                                                       Factors; Fund Expenses; General
                                                       Shareholder Information; Other
                                                       Information

 Item 5.   Management of the Fund                      Investment Adviser; Administrative
                                                       Services; Shareholder Services;
                                                       General Distribution Agent; Portfolio
                                                       Management; Trustees and Officers;
                                                       Other Information
 Item 6.   Capital Stock and Other Securities          Dividends, Capital Gains,
                                                       Distributions and Taxes; Valuation of
                                                       Shares; Portfolio Transactions; Other
                                                       Information
 Item 7.   Purchase of Securities Being Offered        Purchase of Shares; Redemption of
                                                       Shares

 Item 8.   Redemption or Repurchase                    Purchase of Shares; Redemption of
                                                       Shares

 Item 9.   Pending Legal Proceedings
           Litigation

PART B

    

 Item 10.   Cover Page                                 Cover Page
 Item 11.   Table of Contents                          Table of Contents
 Item 12.   General Information and History            Business History
</TABLE>

                                      -i-

<PAGE>

   
<TABLE>
<CAPTION>

Na ITEM NO.                                            LOCATION

==========================================================================================
    

<S>        <C>                                         <C>               
Item 13.   Investment Objectives and Policies          Investment Objectives and Policies;
                                                       Investment Limitations; Appendix:
                                                       Description of Securities and Ratings
Item 14.   Management of the Registrant                Management of the Fund
Item 15.   Control Persons and Principal
               Holders of Securities                   Management of the Fund
Item 16.   Investment Advisory and Other
               Services                                Investment Adviser; Shareholder
                                                       Services; Distributor For Fund;

Item 17.   Brokerage Allocation                        Portfolio Transactions
Item 18.   Capital Stock and Other Securities          General Information - Description of
                                                       Shares and Voting Rights
Item 19.   Purchase, Redemption, and Pricing
           of Securities Being Offered                 Purchase of Shares; Redemption of
                                                       Shares
Item 20.   Tax Status                                  Tax Considerations
Item 21.   Underwriters                                Distributor for Funds
Item 22.   Calculation of Yield Quotations             Computation of Yield and Calculation
                                                       of Total Return; Performance
Item 23.   Financial Statements                        Financial Statements

</TABLE>
   

Part C

    

Information required to be included in Part C is set forth under the
appropriate item, so numbered, in Part C of this Registration Statement.

                                     -ii-
<PAGE>
   
- --------------------------------------------------------------------------------
   MAS                                            INSTITUTIONAL CLASS PROSPECTUS
- ---------
MAS FUNDS

                                January 31, 1998
    

- --------------------------------------------------------------------------------
Client Services: 1-800-354-8185    Prices and Investment Results: 1-800-522-1525
- --------------------------------------------------------------------------------

   
- --------------------------------------------------------------------------------
MAS Funds (the Fund) is a no-load mutual fund consisting of twenty-seven
portfolios, twenty-five of which are described in this Prospectus. The Fund's
Small Cap Value Portfolio is not currently being offered to new investors. This
Prospectus offers the Institutional Class Shares of these twenty-five
portfolios.
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
Shares of the Cash Reserves Portfolio are neither insured nor guaranteed by the
U.S. Government. The portfolio seeks to maintain, but there can be no assurance
that it will be able to maintain, a constant net asset value of $1.00 per share.
- --------------------------------------------------------------------------------
    

- --------------------------------------------------------------------------------
The High Yield Portfolio will invest primarily, and certain other portfolios of
the Fund may invest to varying degrees, in high yield, high risk securities
which are speculative with regard to payment of interest and return of principal
(commonly referred to as junk bonds); therefore, investments in these portfolios
may not be suitable for all investors. See High Yield Investing in the Glossary
of Strategies for additional information regarding certain risks associated with
investment in such securities.
- --------------------------------------------------------------------------------

                            PORTFOLIO PAGE REFERENCE

   
<TABLE>
<CAPTION>

How to Use This Prospectus:           3      Fixed Income:                               Balanced:                              
                                                  Cash Reserves                   22          Balanced                        36
Portfolio Summaries:                              Domestic Fixed Income           23          Multi-Asset-Class               37
                                                  Fixed Income                    24          Balanced Plus                   38
Equity:                                           Fixed Income II                 25                                            
     Equity                          17           Global Fixed Income             26     Prospectus Glossary:                   
<S>                                  <C>     <S>                                 <C>     <S>                                 <C>
     Growth                          17           High Yield                      27          Strategies                      39
     International Equity            18           Intermediate Duration           28          Investments                     44
     Emerging Markets Value          18           International Fixed Income      29                                            
     Mid Cap Growth                  19           Limited Duration                30     General Shareholder                    
     Mid Cap Value                   19           Mortgage-Backed Securities      31          Information:                    54
     Small Cap Value                 20           Municipal                       32                                            
     Value                           21           PA Municipal                    33     Table of Contents:           Back Cover
                                                  Special Purpose Fixed Income    34     
                                                  Multi-Market Fixed Income       35
</TABLE>
- --------------------------------------------------------------------------------
This Prospectus, which should be retained for future reference, sets forth
concisely information that you should know before you invest. A Statement of
Additional Information containing additional information about the Fund has been
filed with the Securities and Exchange Commission. Such Statement is dated
January 31, 1998 as revised from time to time, and has been incorporated by
reference into this Prospectus. A copy of the Statement may be obtained, without
charge, by writing to the Fund or by calling the Client Services Group at the
telephone number shown above.
- --------------------------------------------------------------------------------
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION PASSED UPON
        THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION
                     TO THE CONTRARY IS A CRIMINAL OFFENSE.
    

Miller
Anderson
& Sherrerd, LLP    ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- --------------------------------------------------------------------------------
<PAGE>

   
EXPENSE SUMMARY - INSTITUTIONAL CLASS SHARES

The following tables illustrate the various expenses and fees that a shareholder
in a portfolio will incur either directly or indirectly. The Adviser may from
time to time waive fees or reimburse expenses thereby reducing total operating
expenses.

            Shareholder Transaction Expenses:
            Sales Load Imposed on Purchases                             None
            Sales Load Imposed on Reinvested Dividends                  None
            Redemption Fees                                             None
            Exchange Fees                                               None

            Annual Fund Operating Expenses:
            (as a percentage of average net assets after fee waivers)
            12b-1 Fees                                                  None
            Shareholder Servicing Fee                                   None
    

<TABLE>
   
<CAPTION>
                                                        Investment                   Total
                                                         Advisory      Other        Operating
                  Portfolio                                Fees       Expenses      Expenses
- ---------------------------------------------------------------------------------------------
<S>                                                       <C>          <C>           <C>   
Equity                                                    0.500%       0.100%        0.600%
Growth                                                    0.500        0.100**       0.600
International Equity                                      0.500        0.150         0.650
Emerging Markets Value (formerly, Emerging Markets)       0.503*       0.677         1.180
Mid Cap Growth                                            0.500        0.130         0.630
Mid Cap Value                                             0.750        0.130         0.880
Small Cap Value                                           0.750        0.100         0.850
Value                                                     0.500        0.100         0.600
Cash Reserves                                             0.204*       0.116         0.320
Domestic Fixed Income                                     0.375*       0.125         0.500
Fixed Income                                              0.375        0.105         0.480
Fixed Income II                                           0.375        0.125         0.500
Global Fixed Income                                       0.375        0.195         0.570
High Yield                                                0.375        0.125         0.500
Intermediate Duration                                     0.375        0.125         0.500
International Fixed Income                                0.375        0.155         0.530
Limited Duration                                          0.300        0.120         0.420
Mortgage-Backed Securities                                0.318*       0.182         0.500
Municipal                                                 0.352*       0.148         0.500
PA Municipal                                              0.281*       0.219         0.500
Special Purpose Fixed Income                              0.375        0.105         0.480
Multi-Market Fixed Income                                 0.350*       0.230**       0.580
Balanced                                                  0.450        0.130         0.580
Multi-Asset-Class                                         0.594*       0.186         0.780
Balanced Plus                                             0.550        0.150**       0.700
</TABLE>

      The Total Operating Expense ratios reflected in the table above may be
      higher than the ratio of expenses actually deducted from portfolio assets
      because of the effect of expense offset arrangements. The result of such
      arrangements is to offset expenses that otherwise would be deducted from
      portfolio assets. Amounts in the above table have been restated to
      reflect current fees and expenses.

      * Until further notice, the Adviser has voluntarily agreed to waive its
      advisory fees and/or reimburse certain expenses to the extent necessary
      to keep Total Operating Expenses actually deducted from portfolio assets
      for the Emerging Markets Value, Cash Reserves, Mortgage-Backed Securities,
      Municipal, PA Municipal, Multi-Market Fixed Income and Multi-Asset-Class 
      Portfolios from exceeding 1.18%, 0.32%, 0.50%, 0.50%, 0.50%, 0.58% and 
      0.78%, respectively. Absent such waivers and/or reimbursements by the 
      Adviser, Total Operating Expenses would be 1.427%, 0.366%, 0.557%, 0.523%,
      0.594%, 0.680% and 0.836%, for the Emerging Markets Value, Cash Reserves, 
      Mortgage-Backed Securities, Municipal, PA Municipal, Multi-Market Fixed 
      Income and Multi-Asset-Class Portfolios, respectively.

**Other expenses are based on estimated amounts for the current year.
    


- --------------------------------------------------------------------------------
MAS Fund - 2           Terms in bold type are defined in the Prospectus Glossary

<PAGE>

EXAMPLE

   
The purpose of this table is to assist in understanding the various expenses
that a shareholder in a portfolio will bear directly or indirectly. The
following example illustrates the expenses that an investor would pay on a
$1,000 investment over various time periods assuming (1) a 5% annual rate of
return, and (2) redemption at the end of each time period. The example should
not be considered a representation of past or future expenses and actual
expenses may be greater or less than those shown. For portfolios with less than
10 months of operations, only the 1 and 3 year examples are shown, which are
based on estimated expenses.
    

<TABLE>
   
<CAPTION>
            Portfolio                                   1 year    3 year    5 year    10 year
- ---------------------------------------------------------------------------------------------
<S>                                                      <C>       <C>       <C>       <C> 
Equity                                                   $  6      $ 19      $ 33      $ 75
Growth                                                      6        19        --        --
International Equity                                        7        21        36        81
Mid Cap Growth                                              6        20        35        79
Emerging Markets Value (formerly, Emerging Markets)        12        37        65       143
Mid Cap Value                                               9        28        49       108
Small Cap Value                                             9        27        47       105
Value                                                       6        19        33        75
Cash Reserves                                               3        10        18        41
Domestic Fixed Income                                       5        16        28        63
Fixed Income                                                5        15        27        60
Fixed Income II                                             5        16        28        63
Global Fixed Income                                         6        18        32        71
High Yield                                                  5        16        28        63
Intermediate Duration                                       5        16        28        63
International Fixed Income                                  5        17        30        66
Limited Duration                                            4        13        24        53
Mortgage-Backed Securities                                  5        16        28        63
Municipal                                                   5        16        28        63
PA Municipal                                                5        16        28        63
Special Purpose Fixed Income                                5        15        27        60
Multi-Market Fixed Income                                   6        19       --        --
Balanced                                                    6        19        32        73
Multi-Asset-Class                                           8        25        43        97
Balanced Plus                                               7        22       --        --
- ---------------------------------------------------------------------------------------------
</TABLE>
    

                           HOW TO USE THIS PROSPECTUS

   
A PROSPECTUS SUMMARY begins on page 4;

FINANCIAL HIGHLIGHTS and a description of YIELD AND TOTAL RETURN begin on page
6;

GENERAL INFORMATION including INVESTMENT LIMITATIONS pertinent to all portfolios
begins on page 15;

SUMMARY PAGES for each portfolio's Objective, Policies and Strategies begin on
page 17;

The PROSPECTUS GLOSSARY which defines specific Allowable Investments, Policies
and Strategies printed in bold type throughout this Prospectus begins on page
39; and

GENERAL SHAREHOLDER INFORMATION begins on page 54.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 3

<PAGE>

   
SUMMARY INFORMATION:
    

The following information relates to each portfolio of the Fund and should be
read in conjunction with the specific information about each portfolio.

   
Objectives: Each portfolio seeks to achieve its investment objective relative to
the universe of securities in which it is authorized to invest and, accordingly,
the total return or current income achieved by a portfolio may not be as great
as that achieved by another portfolio that can invest in a broader range of
securities. Fixed-income portfolios will seek to produce total return by
actively trading portfolio securities. The objective of each portfolio is
fundamental and may only be changed with approval of holders of a majority of
the shares of each portfolio. The achievement of any portfolio's objective
cannot be assured.

The Global Fixed Income, International Fixed Income and Emerging Markets Value
Portfolios are Non-Diversified for purposes of the Investment Company Act of
1940 (the "1940 Act"), meaning that they may invest a greater percentage of
assets in the securities of one issuer than the other portfolios. Each other
portfolio is diversified.
    

RISK FACTORS: Prospective investors in the Fund should consider the following
factors as they apply to each Portfolio's allowable investments and policies.
See the Prospectus Glossary for more information on terms printed in bold type:

o     Each portfolio may invest in Repurchase Agreements, which entail a risk of
      loss should the seller default in its obligation to repurchase the
      security which is the subject of the transaction;

o     Each portfolio may participate in a Securities Lending program which
      entails a risk of loss should a borrower fail financially;

   
o     Fixed-Income Securities will be affected by general changes in interest
      rates resulting in increases or decreases in the value of the obligations
      held by a portfolio. The value of Fixed-Income Securities can be expected
      to vary inversely to changes in prevailing interest rates, i.e., as
      interest rates decline, market value tends to increase and vice versa.
      Certain Fixed Income Securities may be highly sensitive to interest rate
      changes, and highly sensitive to the rate of principal payments (including
      prepayments on underlying mortgage assets). Investments in securities
      rated below investment grade, generally referred to as High Yield, high
      risk or junk bonds, carry a high degree of credit risk and are considered
      speculative by the major rating agencies;

o     Common Stocks are subject to market risks which may cause their prices to
      fluctuate over time. Changes in the value of portfolio securities will not
      necessarily affect cash income derived from these securities, but will
      affect a portfolio's net asset value;

o     Investments in foreign securities involve certain special considerations
      which are not typically associated with investing in U.S. companies.
      Portfolios investing in foreign securities may also engage in foreign
      currency exchange transactions. See Forwards, Futures & Options, and
      Swaps;
    

o     Securities purchased on a When-Issued basis may decline or appreciate in
      market value prior to their actual delivery to the portfolio;

   
o     Each portfolio except the Cash Reserves Portfolio may invest a portion of
      its assets in Derivatives including Futures & Options. Futures contracts,
      options and options on futures contracts entail certain costs and risks,
      including imperfect correlation between the value of the securities held
      by the portfolio and the value of the particular derivative instrument,
      and the risk that a portfolio could not close out a futures or options
      position when it would be most advantageous to do so;
    


- --------------------------------------------------------------------------------
MAS Fund - 4           Terms in bold type are defined in the Prospectus Glossary

<PAGE>

   
o     Each portfolio, except the Cash Reserves Portfolio may invest in certain
      instruments such as Forwards, certain types of Futures & Options, certain
      types of Mortgage Securities and When-Issued Securities which require the
      portfolio to segregate some or all of its cash or liquid securities to
      cover its obligations pursuant to such instruments. As asset segregation
      reaches certain levels, a portfolio may lose flexibility in managing its
      investments properly, responding to shareholder redemption requests, or
      meeting other obligations and may be forced to sell other securities that
      it wanted to retain or to realize unintended gains or losses; and

o     From time to time Congress has considered proposals to restrict or
      eliminate the tax-exempt status of Municipals. If such proposals were
      enacted in the future, the Municipal Portfolio and the PA Municipal
      Portfolio would reconsider their investment objectives and policies.

HOW TO INVEST: Institutional Class Shares of each portfolio are available to
clients of the Adviser with combined investments of $5,000,000 and Shareholder
Organizations who have a contractual arrangement with the Fund or the Fund's
Distributor, including institutions such as trusts, foundations or
broker-dealers purchasing for the accounts of others. Shares are offered
directly to investors without a sales commission at the net asset value of the
portfolio next determined after receipt of the order. Share purchases may be
made by sending investments directly to the Fund, subject to acceptance by the
Fund. The Fund also offers Investment and Adviser Class Shares which differ from
the Institutional Class Shares in expenses charged and purchase requirements.
Further information relating to the other classes may be obtained by calling
800-354-8185.
    

HOW TO REDEEM: Shares of each portfolio may be redeemed at any time at the net
asset value of the portfolio next determined after receipt of the redemption
request. The redemption price may be more or less than the purchase price,
except ordinarily in the case of the Cash Reserves Portfolio which seeks to
maintain, but does not guarantee, a constant net asset value per share of $1.00.
See Redemption of Shares and Shareholder Services.

   
THE FUND's INVESTMENT ADVISER: Miller Anderson & Sherrerd, LLP (the "Adviser")
is a Pennsylvania limited liability partnership founded in 1969, wholly owned by
indirect subsidiaries of Morgan Stanley, Dean Witter, Discover and Co., and is
located at One Tower Bridge, West Conshohocken, PA 19428. The Adviser provides
investment counseling services to employee benefit plans, endowments,
foundations and other institutional investors, and as of December 31, 1997 had
in excess of $58.1 billion in assets under management.
    

THE FUND's DISTRIBUTOR: MAS Fund Distribution, Inc. (the "Distributor") provides
distribution services to the Fund.


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 5

<PAGE>

             Financial Highlights - Fiscal Years Ended September 30

                 Selected per share data and ratios for a share
                       outstanding throughout each period

   
    The following information should be read in conjunction with the Fund's
  financial statements which are included in the Annual Report to Shareholders
incorporated by reference in the Statement of Additional Information. The Fund's
financial statements for the year ended September 30, 199 have been examined by
   Price Waterhouse LLP whose opinion thereon (which was unqualified) is also
incorporated by reference in the Statement of Additional Information. As of the
      fiscal year ended September 30, 1997, the Growth, Balanced Plus, and
  Multi-Market Fixed Income Portfolios had not commenced operations. (Data is
   adjusted to reflect a 2.5 for 1 share split as of August 13, 1993 for all
  portfolios in operation as of that date, except for the Global Fixed Income
                                  Portfolio.)

<TABLE>
<CAPTION>
                                      Net Gains                    Dividend
          Net Asset                   or Losses                  Distributions   Capital Gain                             
            Value-         Net       on Securities  Total from       (net       Distributions                             
          Beginning     Investment  (realized and   Investment     investment   (realized net      Other          Total
          of Period      Income      unrealized)    Activities       income)    capital gains)  Distributions  Distributions
- ----------------------------------------------------------------------------------------------------------------------------
Equity Portfolio (Commencement of Institutional Class Operations 11/14/84)
<S>       <C>           <C>           <C>            <C>            <C>            <C>                <C>       <C>      
1997      $  25.67      $   0.36      $   8.22       $   8.58       ($  0.40)      ($  4.40)          --        ($  4.80)
1996         24.43          0.50          3.26           3.76          (0.50)         (2.02)          --           (2.52)
1995         21.05          0.52          4.55           5.07          (0.52)         (1.17)          --           (1.69)
1994         22.82          0.44          0.41           0.85          (0.41)         (2.21)          --           (2.62)
1993         22.04          0.41          1.95           2.36          (0.43)         (1.15)          --           (1.58)
1992         20.78          0.43          1.86           2.29          (0.42)         (0.61)          --           (1.03)
1991         15.86          0.44          5.64           6.08          (0.44)         (0.72)          --           (1.16)
1990         18.65          0.48         (2.57)         (2.09)         (0.54)         (0.16)          --           (0.70)
1989         14.48          0.51          4.15           4.66          (0.46)         (0.03)          --           (0.49)
1988         17.14          0.40         (1.93)         (1.53)         (0.32)         (0.81)          --           (1.13)

International Equity Portfolio (Commencement of Institutional Class Operations 11/25/88)
1997+++      $  13.24      $   0.25      $   2.71       $   2.96       ($  0.26)      ($  0.27)          --        ($  0.53)
1996            12.51          0.31          0.77           1.08          (0.29)         (0.06)          --           (0.35)
1995            14.52          0.19         (0.75)         (0.56)          --            (1.35)      ($0.10)#         (1.45)
1994            13.18          0.12          1.63           1.75          (0.16)         (0.25)          --           (0.41)
1993            11.03          0.21          2.14           2.35          (0.20)          --             --           (0.20)
1992            11.56          0.36         (0.33)          0.03          (0.56)          --             --           (0.56)
1991             9.83          0.22          1.83           2.05          (0.23)         (0.09)          --           (0.32)
1990            11.86          0.26         (1.90)         (1.64)         (0.31)         (0.08)          --           (0.39)
1989            10.00          0.26          1.75           2.01          (0.15)          --             --           (0.15)
    

<CAPTION>
   
           Net Asset                    Net Assets-     Ratio of        Ratio of
            Value-                        End of        Expenses       Net Income      Portfolio     Average
            End of        Total           Period       to Average      to Average      Turnover    Commission
            Period       Return**       (thousands)    Net Assets+     Net Assets        Rate         Rate***
- -------------------------------------------------------------------------------------------------------------
<C>       <C>              <C>          <C>                 <C>            <C>              <C>      <C>     
Equity Portfolio (Commencement of Institutional Class Operations 11/14/84)
1997      $  29.45         38.46%       $1,312,547          0.60%          1.30%            85%      $ 0.0294
1996         25.67         16.48         1,442,261          0.60           1.95             67         0.0557
1995         24.43         26.15         1,597,632          0.61           2.39             67           --
1994         21.05          4.11         1,193,017          0.60           2.10             41           --
1993         22.82         11.05         1,098,003          0.59           1.86             51           --
1992         22.04         11.55           918,989          0.59           2.03             21           --
1991         20.78         40.18           675,487          0.60           2.36             33           --
1990         15.86        (11.67)          473,261          0.59           2.66             44           --
1989         18.65         32.95           602,261          0.59           3.29             29           --
1988         14.48         (8.41)          385,864          0.62           2.99             51           --

International Equity Portfolio (Commencement of Institutional Class Operations 11/25/88)
1997      $  15.67         23.16%       $  649,755          0.66%          1.81%            62%      $ 0.0035
1996         13.24          8.87           635,706          0.69           1.88             78         0.0093
1995         12.51         (3.36)        1,160,986          0.70           1.90            112           --
1994         14.52         13.33         1,132,867          0.64           0.89             69           --
1993         13.18         21.64           891,675          0.66           1.23             43           --
1992         11.03          0.37           512,127          0.70           1.41             42           --
1991         11.56         21.22           274,295          0.67           2.08             51           --
1990          9.83        (14.38)          126,035          0.65           2.40             45           --
1989         11.86         20.36            87,083          0.63*          3.05*             4           --
</TABLE>
    


- --------------------------------------------------------------------------------
MAS Fund - 6           Terms in bold type are defined in the Prospectus Glossary

<PAGE>

             Financial Highlights - Fiscal Years Ended September 30

   
<TABLE>
<CAPTION>
                                      Net Gains                    Dividend
          Net Asset                   or Losses                  Distributions   Capital Gain                             
            Value-         Net       on Securities  Total from       (net       Distributions                             
          Beginning     Investment  (realized and   Investment     investment   (realized net      Other          Total
          of Period      Income      unrealized)    Activities       income)    capital gains)  Distributions  Distributions
- ----------------------------------------------------------------------------------------------------------------------------
Emerging Markets Value Portfolio (formerly, the Emerging Markets Portfolio)
(Commencement of Institutional Class Operations 2/28/95)
<S>       <C>           <C>           <C>           <C>           <C>            <C>                <C>       <C>      
1997      $  11.52      $   0.16      $   1.73      $   1.89      ($  0.20)      ($  0.80)          --        ($  1.00)
1996         11.63          0.19          0.45          0.64         (0.17)         (0.58)          --           (0.75)
1995         10.00          0.10          1.53          1.63          --             --             --            --   

Mid Cap Growth Portfolio (Commencement of Institutional Class Operations 3/30/90)
1997      $  20.53      ($  0.01)     $   4.75      $   4.74          --         ($  3.43)          --        ($  3.43)
1996         18.60          0.01          4.70          4.71         (0.03)         (2.75)          --           (2.78)
1995         16.29          0.03          4.21          4.24         (0.03)         (1.90)          --           (1.93)
1994         18.56          0.02         (0.58)        (0.56)        (0.01)         (1.70)          --           (1.71)
1993         14.51          0.01          4.80          4.81          --            (0.76)          --           (0.76)
1992         14.92          0.01          0.44          0.45         (0.03)         (0.83)          --           (0.86)
1991          9.00          0.04          5.91          5.95         (0.03)          --             --           (0.03)
1990         10.00          0.02         (1.01)        (0.99)        (0.01)          --             --           (0.01)

Mid Cap Value Portfolio (Commencement of Institutional Class Operations 12/30/94)
1997+++   $  14.49      $   0.05      $   8.37      $   8.42      ($  0.10)      ($  1.01)          --        ($  1.11)
1996         13.45          0.11          2.52          2.63         (0.55)         (1.04)          --           (1.59)
1995         10.00          0.55###       2.90          3.45          --             --             --            --   

Small Cap Value Portfolio (Commencement of Institutional Class Operations 7/01/86)
1997      $  19.64      $   0.15      $   8.39      $   8.54      ($  0.11)      ($  3.10)          --        ($  3.21)
1996         18.28          0.18          3.62          3.80         (0.20)         (2.24)          --           (2.44)
1995         17.67          0.19          2.49          2.68         (0.14)         (1.93)          --           (2.07)
1994         17.55          0.16          1.14          1.30         (0.24)         (0.94)          --           (1.18)
1993         12.84          0.18          4.64          4.82         (0.11)          --             --           (0.11)
1992         11.45          0.10          1.48          1.58         (0.19)          --             --           (0.19)
1991          7.20          0.23          4.21          4.44         (0.19)          --             --           (0.19)
1990         10.42          0.28         (3.05)        (2.77)        (0.45)          --             --           (0.45)
1989          8.54          0.34          1.74          2.08         (0.20)          --             --           (0.20)
1988         10.24          0.18         (1.42)        (1.24)        (0.14)         (0.32)          --           (0.46)

<CAPTION>
           Net Asset                    Net Assets-     Ratio of        Ratio of
            Value-                        End of        Expenses       Net Income      Portfolio     Average
            End of        Total           Period       to Average      to Average      Turnover    Commission
            Period       Return**       (thousands)    Net Assets+     Net Assets        Rate         Rate***
- -------------------------------------------------------------------------------------------------------------
Emerging Markets Value Portfolio (formerly, the Emerging Markets Portfolio)
(Commencement of Institutional Class Operations 2/28/95)
<C>       <C>               <C>         <C>              <C>             <C>              <C>       <C>     
1997      $  12.41          18.08%      $   22,808       1.18%++          1.30%            64%      $ 0.0019
1996        (11.52)          6.21%          32,984       1.18++           1.62            108         0.0014
1995         11.63          16.30           42,459       1.18*++          2.04*            63           --

Mid Cap Growth Portfolio (Commencement of Institutional Class Operations 3/30/90)
1997      $  21.84         28.05%       $  446,963       0.63%           (0.07%)          134%      $ 0.0514
1996         20.53         28.81           403,281       0.60             0.04            141         0.0491
1995         18.60         30.56           373,547       0.61             0.21            129           --
1994         16.29         (3.28)          302,995       0.60             0.12             55           --
1993         18.56         33.92           309,459       0.59             0.07             69           --
1992         14.51          2.87           192,817       0.60             0.05             39           --
1991         14.92         66.26           171,163       0.60             0.29             46           --
1990          9.00         (9.98)           76,398       0.64*            0.34*            23           --
                                                                       
Mid Cap Value Portfolio (Commencement of Institutional Class Operations 12/30/94)
1997      $  21.80         61.40%       $  220,260       0.90%++          0.28%           184%      $ 0.0467
1996         14.49         22.30            50,449       0.88++           1.61            377       $ 0.0462
1995         13.45         34.50             4,507       0.93*++         10.13*###        639###        --
                                                                                       
Small Cap Value Portfolio (Commencement of Institutional Class Operations 7/01/86)
1997      $  24.97         49.81%       $  897,396       0.86%            0.70%           107%      $ 0.0480
1996         19.64         24.00           585,457       0.86             0.99            145         0.0498
1995         18.28         18.39           430,368       0.87             1.20            119           --
1994         17.67          8.04           308,156       0.88             0.91            162           --
1993         17.55         37.72           175,029       0.88             1.33             93           --
1992         12.84         14.12           105,886       0.86             1.06             50           --
1991         11.45         63.07            52,182       0.88             1.70             53           --
1990          7.20        (27.63)          100,848       0.85             1.77             59           --
1989         10.42         24.85           189,223       0.85             3.48             36           --
1988          8.54        (11.50)          202,500       0.86             2.32             41           --
</TABLE>                                                            
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 7

<PAGE>

   
             Financial Highlights - Fiscal Years Ended September 30

<TABLE>
<CAPTION>
                                      Net Gains                    Dividend
          Net Asset                   or Losses                  Distributions   Capital Gain                             
            Value-         Net       on Securities  Total from       (net       Distributions                             
          Beginning     Investment  (realized and   Investment     investment   (realized net      Other          Total
          of Period      Income      unrealized)    Activities       income)    capital gains)  Distributions  Distributions
- ----------------------------------------------------------------------------------------------------------------------------
Value Portfolio (Commencement of Institutional Class Operations 11/05/84)
<S>       <C>           <C>           <C>            <C>            <C>            <C>                <C>       <C>      
1997+++   $  15.61      $   0.34      $   5.75       $   6.09       ($  0.30)      ($  1.03)          --        ($  1.33)
1996         14.89          0.30          2.20           2.50          (0.32)         (1.46)          --           (1.78)
1995         12.63          0.31          3.34           3.65          (0.31)         (1.08)          --           (1.39)
1994         12.76          0.30          0.59           0.89          (0.29)         (0.73)          --           (1.02)
1993         12.67          0.30          1.92           2.22          (0.31)         (1.82)          --           (2.13)
1992         12.92          0.35          1.05           1.40          (0.38)         (1.27)          --           (1.65)
1991         10.29          0.44          3.79           4.23          (0.44)         (1.16)          --           (1.60)
1990         14.56          0.52         (3.14)         (2.62)         (0.62)         (1.03)          --           (1.65)
1989         12.42          0.54          2.73           3.27          (0.47)         (0.66)          --           (1.13)
1988         15.81          0.48         (1.68)         (1.20)         (0.46)         (1.73)          --           (2.19)

Cash Reserves Portfolio (Commencement of Institutional Class Operations 8/29/90)
1997      $  1.000      $  0.052          --         $  0.052       ($ 0.052)          --             --        ($ 0.052)
1996         1.000           052          --              052          (.052)          --             --           (.052)
1995         1.000           055          --              055          (.055)          --             --           (.055)
1994         1.000           034          --              034          (.034)          --             --           (.034)
1993         1.000           028          --              028          (.028)          --             --           (.028)
1992         1.000           038          --              038          (.038)          --             --           (.038)
1991         1.000           064          --              064          (.064)          --             --           (.064)
1990         1.000           007          --              007          (.007)          --             --           (.007)
                                                                                                    
Domestic Fixed Income Portfolio (Commencement of Institutional Class Operations 9/30/87)
1997      $  10.89      $   0.74      $   0.33       $   1.07       ($  0.67)      ($  0.02)          --        ($  0.69)
1996         11.03          0.56         (0.09)          0.47          (0.57)          --          (0.04)#         (0.61)
1995          9.87          0.52          0.87           1.39          (0.23)          --             --           (0.23)
1994         11.99          0.94         (1.23)         (0.29)         (0.95)      ($  0.73)       (0.15)#         (1.83)
1993         11.80          0.84          0.66           1.50          (0.78)         (0.53)          --           (1.31)
1992         11.34          0.87          0.76           1.63          (1.00)         (0.17)          --           (1.17)
1991         10.26          0.92          1.10           2.02          (0.94)          --             --           (0.94)
1990         10.90          0.87         (0.45)          0.42          (0.96)         (0.10)          --           (1.06)
1989         10.78          0.86          0.08           0.94          (0.78)         (0.04)          --           (0.82)
1988          9.99          0.73          0.52           1.25          (0.45)         (0.01)          --           (0.46)

           Net Asset                    Net Assets-     Ratio of        Ratio of
            Value-                        End of        Expenses       Net Income      Portfolio     Average
            End of        Total           Period       to Average      to Average      Turnover    Commission
            Period       Return**       (thousands)    Net Assets+     Net Assets        Rate         Rate***
- -------------------------------------------------------------------------------------------------------------
Value Portfolio (Commencement of Institutional Class Operations 11/05/84)
<C>       <C>              <C>          <C>                 <C>            <C>              <C>      <C>     
1997+++   $  20.37         41.25%       $3,542,772          0.62%          1.93%            46%      $ 0.0577
1996         15.61         18.41         1,844,740          0.61           2.07             53         0.0572
1995         14.89         32.58         1,271,586          0.60           2.43             56           --
1994         12.63          7.45           981,337          0.61           2.40             54           --
1993         12.76         19.67           762,175          0.59           2.48             43           --
1992         12.67         12.83           448,329          0.60           2.87             55           --
1991         12.92         45.54           458,117          0.60           3.67             64           --
1990         10.29        (19.88)          369,044          0.59           3.87             51           --
1989         14.56         28.49           726,776          0.59           4.05             35           --
1988         12.42         (5.40)          619,287          0.59           3.96             47           --

Cash Reserves Portfolio (Commencement of Institutional Class Operations 8/29/90)
1997      $  1.000          5.32%       $   98,464          0.33%++        5.20%           N/A           --
1996         1.000          5.35            78,497          0.33++         5.19            N/A           --
1995         1.000          5.57            44,624          0.33++         5.45            N/A           --
1994         1.000          3.40            37,933          0.32++         3.70            N/A           --
1993         1.000          2.81            10,717          0.32++         2.78            N/A           --
1992         1.000          3.89            12,935          0.32++         3.95            N/A           --
1991         1.000          6.63            24,163          0.32++         6.57            N/A           --
1990         1.000          0.74            23,285          0.48*          8.31*           N/A           --
                                                                                                      
                                                                                                      
Domestic Fixed Income Portfolio (Commencement of Institutional Class Operations 9/30/87)
1997      $  11.27         10.20%       $   96,954          0.51%++        6.48%           217%          --
1996         10.89          4.41            95,362          0.52++         5.73            168           --
1995         11.03         14.33            36,147          0.51++         6.80            313           --
1994          9.87         (2.87)           36,521          0.50++         7.65             78           --
1993         11.99         14.08            90,350          0.50           7.15             96           --
1992         11.80         15.41            98,130          0.47           7.67            136           --
1991         11.34         20.99            83,200          0.48           8.18            131           --
1990         10.26          3.90            77,622          0.48           8.35            181           --
1989         10.90          9.14            68,855          0.49           8.24            219           --
1988         10.78         12.63            53,236          0.50           8.62            224           --
</TABLE>
    


- --------------------------------------------------------------------------------
MAS Fund - 8           Terms in bold type are defined in the Prospectus Glossary

<PAGE>

   
             Financial Highlights - Fiscal Years Ended September 30
<TABLE>
<CAPTION>
                                      Net Gains                    Dividend
          Net Asset                   or Losses                  Distributions   Capital Gain                             
            Value-         Net       on Securities  Total from       (net       Distributions                             
          Beginning     Investment  (realized and   Investment     investment   (realized net      Other          Total
          of Period      Income      unrealized)    Activities       income)    capital gains)  Distributions  Distributions
- ----------------------------------------------------------------------------------------------------------------------------
Fixed Income Portfolio (Commencement of Institutional Class Operations 11/14/84)
<S>       <C>           <C>           <C>            <C>           <C>            <C>             <C>            <C>      
1997+++    $ 11.83       $ 0.80       $  0.50        $ 1.30        ($ 0.78)       ($ 0.13)           --          ($ 0.91)       
1996         11.82         0.78          0.08          0.86          (0.79)         (0.06)           --            (0.85)       
1995         10.93         0.80          0.69          1.49          (0.60)          --              --            (0.60)       
1994         12.86         0.77         (1.28)        (0.51)         (0.82)         (0.47)        ($ 0.13)#        (1.42)       
1993         12.67         0.88          0.75          1.63          (0.83)         (0.61)           --            (1.44)       
1992         12.20         0.90          0.74          1.64          (1.02)         (0.15)           --            (1.17)       
1991         10.94         0.94          1.25          2.19          (0.93)          --              --            (0.93)       
1990         11.64         0.92         (0.49)         0.43          (1.03)         (0.10)           --            (1.13)       
1989         11.40         0.90          0.11          1.01          (0.76)         (0.01)           --            (0.77)       
1988         10.86         0.97          0.43          1.40          (0.86)          --              --            (0.86)       

Fixed Income Portfolio II (Commencement of Institutional Class Operations 8/31/90)
1997       $ 11.23       $ 0.74       $  0.39        $ 1.13        ($ 0.79)       ($ 0.11)           --          ($ 0.90)       
1996         11.33         0.70         (0.03)         0.67          (0.66)         (0.08)          (0.03)#        (0.77)       
1995         10.42         0.71          0.71          1.42          (0.51)          --              --            (0.51)       
1994         11.97         0.63         (1.16)        (0.53)         (0.67)         (0.21)          (0.14)#        (1.02)       
1993         11.67         0.69          0.77          1.46          (0.61)         (0.55)           --            (1.16)       
1992         11.34         0.77          0.61          1.38          (0.81)         (0.24)           --            (1.05)       
1991         10.09         0.81          1.10          1.91          (0.66)          --              --            (0.66)       
1990         10.00         0.04          0.05          0.09           --             --              --             --          
                                                                                                
Global Fixed Income Portfolio (Commencement of Institutional Class Operations 4/30/93)
1997+++    $ 11.01       $ 0.60       ($ 0.22)       $ 0.38          (0.59)       ($ 0.16)           --          ($ 0.75)       
1996         11.05         0.63          0.09          0.72          (0.71)         (0.05)           --            (0.76)       
1995         10.20         0.71          0.81          1.52          (0.67)          --              --            (0.67)       
1994         10.67         0.58         (0.61)        (0.03)         (0.41)         (0.03)           --            (0.44)       
1993         10.00         0.13          0.61          0.74          (0.07)          --              --            (0.07)       

<CAPTION>
           Net Asset                    Net Assets-     Ratio of        Ratio of
            Value-                        End of        Expenses       Net Income      Portfolio     Average
            End of        Total           Period       to Average      to Average      Turnover    Commission
            Period       Return**       (thousands)    Net Assets+     Net Assets        Rate         Rate***
- -------------------------------------------------------------------------------------------------------------
Fixed Income Portfolio (Commencement of Institutional Class Operations 11/14/84)
<S>        <C>            <C>           <C>              <C>             <C>             <C>         <C>
1997+++    $ 12.22        11.47%        $3,219,987        0.49%           6.73%           179%         -- 
1996         11.83         7.63          1,790,146        0.48            6.77            162          -- 
1995         11.82        14.19          1,487,409        0.49            7.28            140          -- 
1994         10.93        (4.43)         1,194,957        0.49            6.79            100          -- 
1993         12.86        14.26            909,738        0.47            7.06            144          -- 
1992         12.67        14.35            859,712        0.47            7.50            137          -- 
1991         12.20        21.12            831,547        0.47            8.25            143          -- 
1990         10.94         3.79            666,736        0.46            8.43            209          -- 
1989         11.64         9.25            559,995        0.47            8.36            100          -- 
1988         11.40        13.43            405,385        0.49            8.91            168          -- 
                                                                                                          
Fixed Income Portfolio II (Commencement of Institutional Class Operations 8/31/90)
1997       $ 11.46        10.58%        $  226,662        0.50%           6.54%           182%         -- 
1996         11.23         6.12            191,740        0.50            6.06            165          -- 
1995         11.33        14.13            176,945        0.51            6.75            153          -- 
1994         10.42        (4.76)           129,902        0.51            6.07            137          -- 
1993         11.97        13.53             94,836        0.51            6.17            101          -- 
1992         11.67        13.02             78,302        0.49            7.05            182          -- 
1991         11.34        19.59             42,881        0.49            7.76            190          -- 
1990         10.09         0.88             20,729        0.52*           8.00*             7          -- 
                                                                                                          
Global Fixed Income Portfolio (Commencement of Institutional Class Operations 4/30/93)
1997+++    $ 10.64         3.53%        $   77,493        0.57%           5.65%           137%         -- 
1996         11.01         6.83             67,282        0.60            5.25            133          -- 
1995         11.05        15.54             55,147        0.58            6.34            118          -- 
1994         10.20        (0.29)            43,066        0.57            5.48            117          -- 
1993         10.67         7.43             53,164        0.58*++         5.08*            30          -- 
</TABLE>
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 9
<PAGE>

   
             Financial Highlights - Fiscal Years Ended September 30
<TABLE>
<CAPTION>
                                      Net Gains                    Dividend
          Net Asset                   or Losses                  Distributions   Capital Gain                             
            Value-         Net       on Securities  Total from       (net       Distributions                             
          Beginning     Investment  (realized and   Investment     investment   (realized net      Other          Total
          of Period      Income      unrealized)    Activities       income)    capital gains)  Distributions  Distributions
- ----------------------------------------------------------------------------------------------------------------------------
High Yield Portfolio (Commencement of Institutional Class Operations 2/28/89)
<S>       <C>           <C>           <C>            <C>           <C>            <C>             <C>            <C>      
1997+++    $ 9.32       $  0.86       $  0.87        $  1.73        ($ 0.87)       ($ 0.03)          --          ($ 0.90)       
1996         9.08          0.88          0.28           1.16          (0.92)          --             --            (0.92)       
1995         8.97          0.90          0.19           1.09          (0.85)       ($ 0.08)       ($ 0.05)#        (0.98)       
1994         9.49          0.75         (0.42)          0.33          (0.69)         (0.16)          --            (0.85)       
1993         8.58          0.73          0.90           1.63          (0.72)          --             --            (0.72)       
1992         7.80          0.74          0.89           1.63          (0.85)          --             --            (0.85)       
1991         7.07          1.42          0.82           2.24          (1.51)          --             --            (1.51)       
1990         9.98          1.36         (2.82)         (1.46)         (1.42)         (0.03)          --            (1.45)       
1989        10.00          0.55         (0.44)          0.11          (0.13)          --             --            (0.13)       

Intermediate Duration Portfolio (Commencement of Institutional Class Operations 10/3/94)
1997+++    $10.28       $  0.61       $  0.27        $  0.88        ($ 0.53)       ($ 0.15)          --          ($ 0.68)       
1996        10.68          0.60          0.03           0.63          (0.65)         (0.38)          --            (1.03)       
1995        10.00          0.69          0.42           1.11          (0.43)          --             --            (0.43)       

International Fixed Income Portfolio (Commencement of Institutional Class Operations 4/29/94)
1997       $10.77       $  0.50       ($ 0.44)       $  0.06)       ($ 0.38)       ($ 0.26)          --          ($ 0.64)       
1996        11.01          0.52          0.12           0.64          (0.80)         (0.08)          --            (0.88)       
1995        10.05          0.67          0.92           1.59          (0.63)          --             --            (0.63)       
1994        10.00          0.21         (0.11)          0.10          (0.05)          --             --            (0.05)       

Limited Duration Portfolio (Commencement of Institutional Class Operations 3/31/92)
1997       $10.38       $  0.62       $  0.08        $  0.70        ($ 0.59)          --             --          ($ 0.59)       
1996        10.41          0.58         (0.03)          0.55          (0.58)          --             --            (0.58)       
1995        10.19          0.56          0.22           0.78          (0.55)          --          ($ 0.01)#        (0.56)       
1994        10.72          0.56         (0.52)          0.04          (0.51)       ($ 0.04)         (0.02)#        (0.57)       
1993        10.58          0.32          0.22           0.54          (0.32)         (0.08)          --            (0.40)       
1992        10.00          0.19          0.49           0.68          (0.10)          --             --            (0.10)       

<CAPTION>
           Net Asset                    Net Assets-     Ratio of        Ratio of
            Value-                        End of        Expenses       Net Income      Portfolio     Average
            End of        Total           Period       to Average      to Average      Turnover    Commission
            Period       Return**       (thousands)    Net Assets+     Net Assets        Rate         Rate***
- -------------------------------------------------------------------------------------------------------------
High Yield Portfolio (Commencement of Institutional Class Operations 2/28/89)
<S>        <C>            <C>           <C>              <C>             <C>             <C>         <C>
1997+++    $ 10.15         19.90%        $ 523,899          0.51%          9.05%           96%         -- 
1996          9.32         13.83           289,810          0.49          10.04           115          -- 
1995          9.08         13.58           220,785          0.50          10.68            96          -- 
1994          8.97          3.57           182,969          0.50           9.01           112          -- 
1993          9.49         20.12            50,396          0.53++         8.94            99          -- 
1992          8.58         22.49            20,491          0.53++         9.74           148          -- 
1991          7.80         36.70             6,453          0.76          19.45           106          -- 
1990          7.07        (16.26)            4,820          0.82          16.93            65          -- 
1989          9.98          0.91             3,479          0.73*         11.66*           17          -- 
                                                                                                          
Intermediate Duration Portfolio (Commencement of Institutional Class Operations 10/3/94)
1997+++    $ 10.48          8.93%        $  72,119          0.55%++        5.93%          204%         -- 
1996         10.28          6.27            12,017          0.56++         6.17           251          -- 
1995         10.68         11.39            19,237          0.52*++        6.56*          168          -- 
                                                                                                          
International Fixed Income Portfolio (Commencement of Institutional Class Operations 4/29/94)
1997       $ 10.19          0.44%        $ 152,752          0.53%          5.27%          107%         -- 
1996         10.77          6.13           143,137          0.53           5.39           124          -- 
1995         11.01         16.36           127,882          0.54           6.35           140          -- 
1994         10.05          1.01            66,879          0.60*++        5.83*           31          -- 
                                                                                                          
Limited Duration Portfolio (Commencement of Institutional Class Operations 3/31/92)
1997       $ 10.49          6.98%        $ 155,570          0.43%++        6.15%          130%         -- 
1996         10.38          5.47           123,227          0.43           5.65           174          -- 
1995         10.41          7.95           100,186          0.43++         5.96           119          -- 
1994         10.19          0.40            62,775          0.41           4.16           192          -- 
1993         10.72          5.33           128,991          0.42++         3.92           217          -- 
1992         10.58          6.90            13,065          0.49*          4.99*          159          -- 
</TABLE>
    


- --------------------------------------------------------------------------------
MAS Fund - 10          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
             Financial Highlights - Fiscal Years Ended September 30
<TABLE>
<CAPTION>
                                      Net Gains                    Dividend
          Net Asset                   or Losses                  Distributions   Capital Gain                             
            Value-         Net       on Securities  Total from       (net       Distributions                             
          Beginning     Investment  (realized and   Investment     investment   (realized net      Other          Total
          of Period      Income      unrealized)    Activities      income)     capital gains)  Distributions  Distributions
- ----------------------------------------------------------------------------------------------------------------------------
Mortgage-Backed Securities Portfolio (Commencement of Institutional Class Operations 1/31/92)
<S>       <C>           <C>           <C>            <C>           <C>            <C>             <C>            <C>      
1997       $10.42       $  0.91       $  0.16        $  1.07        ($ 0.73)          --             --          ($ 0.73)       
1996        10.49          0.68         (0.07)          0.61          (0.68)          --             --            (0.68)       
1995         9.95          0.72          0.47           1.19          (0.65)          --             --            (0.65)       
1994        10.95          0.52         (0.83)         (0.31)         (0.45)       ($ 0.21)       ($ 0.03)#        (0.69)       
1993        10.44          0.63          0.48           1.11          (0.60)          --             --            (0.60)       
1992        10.00          0.29          0.28           0.57          (0.13)          --             --            (0.13)       

Municipal Portfolio (Commencement of Institutional Class Operations 10/1/92)
1997       $11.23       $  0.53       $  0.40        $  0.93        ($ 0.52)          --             --          ($ 0.52)       
1996        10.75          0.51          0.49           1.00          (0.52)          --             --            (0.52)       
1995        10.04          0.59          0.71           1.30          (0.59)          --             --            (0.59)       
1994        11.15          0.51         (1.01)         (0.50)         (0.54)          --          ($ 0.07)#        (0.61)       
1993        10.00          0.37          1.04           1.41          (0.26)          --             --            (0.26)       

PA Municipal Portfolio (Commencement of Institutional Class Operations 10/1/92)
1997       $11.37       $  0.55       $  0.34        $  0.89        ($ 0.55)          --             --          ($ 0.55)       
1996        10.91          0.51          0.46           0.97          (0.51)          --             --            (0.51)       
1995        10.13          0.58          0.77           1.35          (0.57)          --             --            (0.57)       
1994        11.26          0.56         (1.00)         (0.44)         (0.64)       ($ 0.05)#         --            (0.69)       
1993        10.00          0.39          1.17           1.56          (0.30)          --             --            (0.30)       

Special Purpose Fixed Income Portfolio (Commencement of Institutional Class Operations 3/31/92)
1997+++    $12.26       $  0.85       $  0.52        $  1.37        ($ 0.87)       ($ 0.18)          --          ($ 1.05)       
1996        12.53          0.83          0.08           0.91          (0.88)         (0.30)          --            (1.18)       
1995        11.52          0.91          0.75           1.66          (0.65)          --             --            (0.65)       
1994        13.40          0.80         (1.28)         (0.48)         (0.78)         (0.53)       ($ 0.09)         (1.40)       
1993        12.72          0.88          0.92           1.80          (0.82)         (0.30)          --            (1.12)       
1992        11.80          0.39          0.72           1.11          (0.19)          --             --            (0.19)       

<CAPTION>
           Net Asset                    Net Assets-     Ratio of        Ratio of
            Value-                        End of        Expenses       Net Income      Portfolio     Average
            End of        Total           Period       to Average      to Average      Turnover    Commission
            Period       Return**       (thousands)    Net Assets+     Net Assets        Rate         Rate***
- -------------------------------------------------------------------------------------------------------------
Mortgage-Backed Securities Portfolio (Commencement of Institutional Class Operations 1/31/92)
<S>        <C>            <C>           <C>              <C>             <C>             <C>         <C>
1997       $10.76         10.70%        $  38,085         0.50%++         7.79%           164%         -- 
1996        10.42          6.10            50,925         0.50++          6.46            116          -- 
1995        10.49         12.52            49,766         0.50++          6.35            107          -- 
1994         9.95         (2.95)          119,518         0.50++          5.30            220          -- 
1993        10.95         11.03            50,249         0.50++          6.92             93          -- 
1992        10.44          5.75            13,601         0.50*++         8.11*           133          -- 
                                                                                                          
Municipal Portfolio (Commencement of Institutional Class Operations 10/1/92)
1997       $11.64          8.47%        $  75,120         0.51%++         4.70%            54%         -- 
1996        11.23          9.46            54,536         0.51++          4.66             78          -- 
1995        10.75         13.37            36,040         0.50++          5.64             58          -- 
1994        10.04         (4.64)           38,549         0.50++          4.98             34          -- 
1993        11.15         14.20            26,914         0.50*++         4.65*            66          -- 
                                                                                                          
PA Municipal Portfolio (Commencement of Institutional Class Operations 10/1/92)
1997       $11.71          8.01%        $  27,461         0.51%++         4.74%            64%         -- 
1996        11.37          9.03            28,488         0.51++          4.58             51          -- 
1995        10.91         13.74            15,734         0.50++          5.56             57          -- 
1994        10.13         (4.08)           23,515         0.50++          5.39             69          -- 
1993        11.26         15.81            15,633         0.50*++         4.74*            94          -- 
                                                                                                          
Special Purpose Fixed Income Portfolio (Commencement of Institutional Class Operations 3/31/92)
1997+++    $12.58         11.78%        $ 492,784         0.49%           6.88%           198%         -- 
1996        12.26          7.74           447,646         0.49            6.75            151          -- 
1995        12.53         14.97           390,258         0.49            7.33            143          -- 
1994        11.52         (4.00)          384,731         0.50            6.66            100          -- 
1993        13.40         15.19           300,185         0.48            6.84            124          -- 
1992        12.72          9.47           274,195         0.53*           6.94*           138          -- 
</TABLE>
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 11
<PAGE>

   
             Financial Highlights - Fiscal Years Ended September 30
<TABLE>
<CAPTION>
                                      Net Gains                    Dividend
          Net Asset                   or Losses                  Distributions   Capital Gain                             
            Value-         Net       on Securities  Total from       (net       Distributions                             
          Beginning     Investment  (realized and   Investment     investment   (realized net      Other          Total
          of Period      Income      unrealized)    Activities      income)     capital gains)  Distributions  Distributions
- ----------------------------------------------------------------------------------------------------------------------------
Balanced Portfolio (Commencement of Institutional Class Operations 12/31/92)
<S>       <C>           <C>           <C>            <C>           <C>            <C>             <C>            <C>      
1997       $13.81        $ 0.51       $  2.91        $ 3.42        ($ 0.54)       ($ 1.39)           --          ($ 1.93)       
1996        13.06          0.53          1.15          1.68          (0.50)         (0.43)           --            (0.93)       
1995        11.28          0.54          1.78          2.32          (0.47)         (0.07)           --            (0.54)
1994        11.84          0.47         (0.45)         0.02          (0.43)         (0.15)           --            (0.58)
1993        11.06          0.25          0.66          0.91          (0.13)            --            --            (0.13) 
                                                                                                                   
Multi-Asset-Class Portfolio (Commencement of Institutional Class Operations 7/29/94)
1997+++    $12.28        $ 0.38       $  2.57        $ 2.95        ($ 0.51)       ($ 1.08)           --          ($ 1.59)       
1996        11.34          0.46          1.05          1.51          (0.42)         (0.15)           --            (0.57)       
1995         9.97          0.44          1.33          1.77          (0.40)            --            --            (0.40)
1994        10.00          0.07         (0.10)        (0.03)            --             --            --             --

<CAPTION>
           Net Asset                    Net Assets-     Ratio of        Ratio of
            Value-                        End of        Expenses       Net Income      Portfolio     Average
            End of        Total           Period       to Average      to Average      Turnover    Commission
            Period       Return**       (thousands)    Net Assets+     Net Assets        Rate         Rate***
- -------------------------------------------------------------------------------------------------------------
Mortgage-Backed Securities Portfolio (Commencement of Institutional Class Operations 1/31/92)
<S>        <C>            <C>           <C>              <C>             <C>             <C>         <C>
1997       $ 15.30        27.44%        $ 343,284           0.58%         3.56%           145%       $0.0578
1996         13.81        13.47           300,868           0.57          3.85            110         0.0521
1995         13.06        21.37           334,630           0.58          4.55             95
1994         11.28         0.19           309,596           0.58          4.06             75
1993         11.84         8.31           291,762           0.58*         3.99*            62
                                                                                                            
Multi-Asset-Class Portfolio (Commencement of Institutional Class Operations 7/29/94)
1997+++    $ 13.64        26.50%        $ 173,155           0.74%++       3.07%           141%       $0.0114
1996         12.28        13.75           129,558           0.58++        3.82            122         0.0225
1995         11.34        18.28            96,839           0.58++        4.56            112
1994          9.97        (0.30)           51,877           0.58*++       4.39*            20
</TABLE>
    


- --------------------------------------------------------------------------------
MAS Fund - 12          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Notes to the Financial Highlights

*     Annualized

**    Total return figures for partial years are not annualized.

***   For fiscal years beginning on or after September 1, 1995, a fund is
      required to disclose the average commission rate per share paid for
      security transactions on which commissions were charged.

#     Represents distributions in excess of net realized gains.

##    Represents distributions in excess of net investment income.

###   Net Investment Income, the Ratio of Net Investment Income to Average Net
      Assets and the Portfolio Turnover Rate reflect activity relating to a
      nonrecurring initiative to invest in higher-paying dividend income
      producing securities.

+     For the respective periods ended September 30, the Ratio of Expenses to
      Average Net Assets for the following portfolios excludes the effect of
      expense offsets. If expense offsets were included, the Ratio of Expenses
      to Average Net Assets would be as follows for the respective periods.
      Where listed as N/A, if the expense offsets were included, the Ratio of
      Expenses to Average Net Assets would not significantly differ.

Portfolio                                        1995         1996         1997
- ---------                                        ----         ----         ----
Equity                                           0.60%        0.60%        0.59%
International Equity                             0.66         0.65         0.63
Emerging Markets Value                           1.18*        1.18         1.18
Mid Cap Growth                                   0.60         0.60         0.61
Mid Cap Value                                    0.88*        0.88         0.88
Small Cap Value                                  0.87         0.86         0.86
Value                                            0.60         0.60         0.61
Cash Reserves                                    0.32         0.32         0.32
Domestic Fixed Income                            0.50         0.50         0.50
Fixed Income                                     0.48         0.48         0.48
Fixed Income II                                  0.49         0.49         0.49
Global Fixed Income                              0.56         0.58         0.57

Portfolio                                        1995         1996         1997
- ---------                                        ----         ----         ----
High Yield                                       0.49%        0.48%        0.50%
Intermediate Duration                            0.52         0.52         0.52
International Fixed Income                       0.54         0.53         0.53
Limited Duration                                 0.42         0.42         0.42
Mortgage-Backed Securities                       0.50         0.50         0.50
Municipal                                        0.50         0.50         0.50
PA Municipal                                      N/A         0.50         0.50
Special Purpose Fixed Income                     0.48         0.49         0.48
Balanced                                         0.57         0.57         0.56
Multi-Asset-Class                                0.58         0.58         0.74

++    For the periods indicated, the Adviser voluntarily agreed to waive its
      advisory fees and/or reimburse certain expenses to the extent necessary in
      order to keep Total Operating Expenses actually deducted from portfolio
      assets for the respective portfolios from exceeding voluntary expense
      limitations. For the respective periods ended September 30, the
      voluntarily waived and/or reimbursed expenses totaled the below listed
      amounts.

               Voluntarily waived and/or reimbursed expenses for:

Portfolio                      1992    1993    1994    1995     1996    1997
- ---------                      ----    ----    ----    ----     ----    ----
Emerging Markets Value         --      --      --      0.29%*   0.11%   0.10%
Mid Cap Value                  --      --      --      2.13*    0.18    0.02
Cash Reserves                  --      0.24%   0.14%   0.11     0.09    0.07
Domestic Fixed Income          --      --      0.03    0.09     0.01    0.01
Global Fixed Income            --      0.18*   --      --       --      --
High Yield                     0.22    0.09    --      --       --      --
Intermediate Duration          --      --      --      0.08*    0.13    0.05
International Fixed Income     --      --      0.11*   --       --      --
Limited Duration               --      0.03    --      0.02     --      0.00(o)
Mortgage-Backed Securities     0.30*   0.06    0.01    0.01     0.04    0.04
Municipal                      --      0.20*   0.06    0.09     0.09    0.05
PA Municipal                   --      0.25*   0.09    0.19     0.15    0.09
Multi-Asset-Class              --      --      0.26*   0.14     0.08    0.08

+++   Per share amounts for the year ended September 30, 1997, are based on
      average shares outstanding. 

(o) Amount is less than 0.01%
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 13
<PAGE>

YIELD AND TOTAL RETURN:

   
From time to time each portfolio of the Fund advertises its yield and total
return. Both yield and total return figures are based on historical earnings and
are not intended to indicate future performance. The average annual total return
reflects changes in the price of a portfolio's shares and assumes that any
income dividends and/or capital gain distributions made by the portfolio during
the period were reinvested in additional shares of the portfolio. Figures will
be given for one-, five- and ten-year periods ending with the most recent
calendar quarter-end (if applicable), and may be given for other periods as well
(such as from commencement of the portfolio's operations).

The yield of a portfolio (other than the Cash Reserves Portfolio) is computed by
dividing the net investment income per share (using the average number of shares
entitled to receive dividends) earned during a 30-day period by the closing
price per share on the last day of the period. For the purpose of determining
net investment income, the calculation includes as expenses of the portfolio all
recurring fees and any non recurring charges for the period stated.
    

The Municipal and PA Municipal Portfolios may also advertise or quote
tax-equivalent yields and after-tax total returns. A tax-equivalent yield shows
the level of taxable yield needed to produce an after-tax equivalent to the
portfolio's tax-free yield. This is done by increasing the portfolio's yield
(computed as above) by the amount necessary to reflect the payment of Federal
income tax (and Pennsylvania income tax, in the case of the PA Municipal
Portfolio) at a tax rate stated in the advertisement or quote. An after-tax
return reflects the average annual or cumulative change in value over the
measuring period after the deduction of taxes at rates stated in the
advertisement or quote.

From time to time the Cash Reserves Portfolio may advertise or quote its yield
and effective yield. The yield of the Cash Reserves Portfolio refers to the
income generated by an investment in the portfolio over a stated seven day
period. This income is then annualized. That is, the amount of income generated
by the investment during that week is assumed to be generated each week over a
52-week period and is shown as a percentage of the investment. The effective
yield is calculated similarly, but the income earned over the seven day period
by an investment in the portfolio is assumed to be reinvested when the return is
annualized. The "effective yield" will be higher than the yield because of the
compounding effect of this assumed reinvestment.

The performance of a portfolio may be compared to data prepared by independent
services which monitor the performance of investment companies, data reported in
financial and industry publications, returns of other investment advisers and
mutual funds, and various indices as further described in the Statement of
Additional Information.

   
The performance of Institutional Class Shares, Investment Class Shares and
Adviser Class Shares differs because of any class-specific expenses paid by each
class and the shareholder servicing fees charged to Investment Class Shares and
distribution fees charged to Adviser Class Shares.

The Annual Report to Shareholders of the Fund for the Fund's most recent fiscal
year-end contains additional performance information that includes comparisons
with appropriate indices. The Annual Report is available without charge upon
request by writing to the Fund or calling the Client Services Group at the
telephone number shown on the front cover of this Prospectus.
    


- --------------------------------------------------------------------------------
MAS Fund - 14          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
General Information

Suitability: The Fund's portfolios are designed for long-term investors who can
accept the risks entailed in investing in the stock and bond markets, and are
not meant to provide a vehicle for playing short-term swings in the market. The
Fund's portfolios are designed principally for the investments of tax-exempt
fiduciary investors who are entrusted with the responsibility of investing
assets held for the benefit of others. Since such investors are not subject to
Federal income taxes, securities transactions for all portfolios except the
Municipal and PA Municipal Portfolios will not be influenced by the different
tax treatment of capital gains and dividend income under the Internal Revenue
Code. Investments in the Municipal and PA Municipal Portfolios are suitable for
taxable investors who would benefit from the portfolios' tax-exempt income.
    

Securities Lending: Each portfolio may lend its securities to qualified brokers,
dealers, banks and other financial institutions for the purpose of realizing
additional income. Loans of securities will be collateralized by cash, letters
of credit, or securities issued or guaranteed by the U.S. Government or its
agencies. The collateral will equal at least 100% of the current market value of
the loaned securities. In addition, a portfolio will not loan its portfolio
securities to the extent that greater than one-third of its total assets, at
fair market value, would be committed to loans at that time.

Illiquid Securities/Restricted Securities: Each of the portfolios may invest up
to 15% of its net assets (except the Cash Reserves Portfolio, which may invest
up to 10% of its net assets) in securities that are illiquid by virtue of the
absence of a readily available market, or because of legal or contractual
restrictions on resale. This policy does not limit the acquisition of (i)
restricted securities eligible for resale to qualified institutional buyers
pursuant to Rule 144A under the Securities Act of 1933 or (ii) commercial paper
issued pursuant to Section 4(2) under the Securities Act of 1933, that are
determined to be liquid in accordance with guidelines established by the Fund's
Board of Trustees.

   
Turnover: The Adviser manages the portfolios generally without regard to
restrictions on annual turnover. In general, the portfolios will not trade for
short-term profits, but when circumstances warrant, investments may be sold
without regard to the length of time held.

With respect to the fixed income portfolios and the fixed-income portion of the
Balanced, Multi-Asset-Class and Balanced Plus Portfolios, the annual turnover
rate will ordinarily exceed 100% due to changes in portfolio duration, yield
curve strategy or commitments with respect to forward delivery mortgage-backed
securities. For the Balanced, Multi-Asset-Class and Balanced Plus Portfolios,
annual turnover rate is not expected to exceed 100% with respect to Equity
Securities.

The following portfolios have annual turnover rates of 100% or more: Mid Cap
Growth, Mid Cap Value, Small Cap Value, Domestic Fixed Income, Fixed Income,
Fixed Income II, Global Fixed Income, Intermediate Duration, International Fixed
Income, Limited Duration, Mortgage-Backed Securities, Special Purpose Fixed
Income, Balanced and Multi-Asset-Class. These high rates of annual turnover
necessarily result in correspondingly heavier brokerage and portfolio trading
costs which are paid by a portfolio. Trading in Fixed-Income Securities does not
generally involve the payment of brokerage commissions, but does involve
indirect transaction costs. In addition to portfolio trading costs, higher rates
of annual turnover may result in the realization of capital gains. To the extent
net short-term capital gains are realized, any distributions resulting from such
gains are considered ordinary income for federal income tax purposes. The annual
turnover rate for each portfolio is shown in the Financial Highlights under
"Portfolio Turnover Rate."
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 15
<PAGE>

   
Cash Equivalents/Temporary Defensive Investing: Although each portfolio intends
to remain substantially fully invested, a small percentage of a portfolio's
assets is generally held in the form of Cash Equivalents in order to meet
redemption requests and otherwise manage the daily affairs of each portfolio. In
addition, any portfolio may, when the Adviser deems that market conditions are
such that a temporary defensive approach is desirable, invest in Cash
Equivalents or the Fixed-Income Securities listed for that portfolio without
limit. In addition, the Adviser may, for temporary defensive purposes, increase
or decrease the average weighted maturity or duration of any fixed-income
portfolio without regard to that portfolio's usual average weighted maturity.
    

Concentration: Concentration is defined as investment of 25% or more of a
portfolio's total assets in the securities of issuers operating in any one
industry. Except as provided in a portfolio's specific investment policies, or
as detailed in Investment Limitations, a portfolio will not concentrate
investments in any one industry.

   
Investment Limitations: Each portfolio is subject to certain limitations
designed to reduce its exposure to specific situations. Some of these
limitations are:

(a) with respect to 75% of its assets, a portfolio will not purchase securities
of any issuer if, as a result, more than 5% of the portfolio's total assets
taken at market value would be invested in the securities of any single issuer
except that this restriction does not apply to securities issued or guaranteed
by the U.S. Government or its agencies or instrumentalities. This limitation is
not applicable to the Global Fixed Income, Emerging Markets Value and
International Fixed Income Portfolios. However, these portfolios will comply
with the diversification requirements imposed by Sub-Chapter M of the Internal
Revenue Code and;

(b) with respect to 75% of its assets, a portfolio will not purchase a security
if, as a result, the portfolio would hold more than 10% of the outstanding
voting securities of any issuer. This limitation is not applicable to the Global
Fixed Income, Emerging Markets Value and International Fixed Income Portfolios.
However, these portfolios will comply with the diversification requirements
imposed by Sub-Chapter M of the Internal Revenue Code.

Limitations (a) and (b) and certain other limitations described in the Statement
of Additional Information are fundamental and may be changed only with the
approval of the holders of a majority of the shares of the portfolios. Other
investment limitations described here and in the Statement of Additional
Information are not fundamental policies; meaning that the Board of Trustees may
change them without shareholder approval. If a percentage limitation on
investment or utilization of assets as set forth in this prospectus or the
Statement of Additional Information is adhered to at the time an investment is
made, a later change in percentage resulting from changes in the value or total
cost of the portfolios' assets will not be considered a violation of the
restriction, and the sale of securities will not be required.
    


- --------------------------------------------------------------------------------
MAS Fund - 16          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Equity Portfolio
    

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing primarily in dividend-paying common
                        stocks of companies which are deemed by the Adviser to
                        demonstrate long-term earnings growth that is greater
                        than the economy in general and greater than the
                        expected rate of inflation.

   
Approach:               The investment process is designed to capture value by
                        identifying stocks that offer low but rising
                        expectations. Equity valuations reflect the level of
                        market expectations for companies, while
                        earnings-estimate revision data indicate the direction
                        of changes in expectations. In addition, the Adviser
                        diversifies across sectors to preserve return while
                        reducing risk; thus, the best values within each sector
                        of the market are sought. A group of senior portfolio
                        managers invests equal portions of the portfolio using a
                        disciplined approach to stock selection supported by
                        fundamental research analysts. Each manager makes his or
                        her own buy, sell and sector-allocation decisions.
                        Overall sector allocation is reviewed regularly to
                        preserve the benefits of diversification.

Policies:               Generally at least 65% invested in Equity Securities 
                        Up to 5% invested in Foreign Equities (excluding ADRs)
                        Derivatives may be used to pursue portfolio strategy

Capitalization Range:   Generally greater than $1 billion

Allowable Investments:  ADRs                   Corporates        
                        Agencies               Foreign Bonds     
                        Cash Equivalents       Foreign Currency  
                        Common Stocks          Foreign Equities  
                        Convertibles           Forwards          

                        Futures & Options      Swaps              
                        Investment Companies   U.S. Governments           
                        Preferred Stock        Warrants                  
                        Repurchase Agreements  When Issued Securities   
                        Rights                 Zero Coupons              

Comparative Index:      S&P 500 Index

Strategies:             Core Equity Investing

Portfolio
Management Team:        Arden C. Armstrong, James J. Jolinger, Nicholas J.
                        Kovich, Brian Kramp, Robert J. Marcin and Gary G.
                        Schlarbaum
    

- --------------------------------------------------------------------------------

Growth Portfolio

Objective:              To achieve long-term capital growth by investing
                        primarily in common stocks of large size companies which
                        the Adviser believes offer long-term growth potential.

   
Approach:               The Adviser selects common stocks meeting certain
                        criteria which the Adviser believes are related to the
                        stability and growth of the fundamental characteristics
                        of the company.

Policies:               Generally at least 65% invested in Equity Securities of
                        companies offering long-term growth potential. 
                        Up to 5% invested in Foreign Equities (excluding ADRs)
                        Derivatives may be used to pursue portfolio strategy
    

Capitalization Range:   Generally greater than $1 billion

   
Allowable Investments:  ADRs                   Corporates        
                        Agencies               Foreign Bonds     
                        Cash Equivalents       Foreign Currency  
                        Common Stocks          Foreign Equities  
                        Convertibles           Forwards          

                        Futures & Options      Swaps              
                        Investment Companies   U.S. Governments           
                        Preferred Stock        Warrants                  
                        Repurchase Agreements  When Issued Securities   
                        Rights                 Zero Coupons              
    

Comparative Index:      S&P 500 Index

Strategy:               Growth Stock Investing

   
Portfolio
Management Team:        Arden C. Armstrong and Gary G. Schlarbaum
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 17
<PAGE>

   
International Equity Portfolio

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in common stocks of companies based
                        outside of the U.S.
    

Approach:               The Adviser evaluates both short-term and long-term
                        international economic trends and the relative
                        attractiveness of non-U.S. equity markets and individual
                        securities.

   
Policies:               Generally at least 65% invested in Foreign Equities of
                        issuers in at least 3 countries other than the U.S.
    

                        Derivatives may be used to pursue portfolio strategy

   
Allowable Investments:  ADRs                        Eastern European Issuers 
                        Agencies                    Emerging Markets Issuers 
                        Brady Bonds                 Foreign Bonds            
                        Cash Equivalents            Foreign Currency         
                        Common Stocks               Foreign Equities         
                        Convertibles                Forwards                 
                        Corporates                  Futures & Options        
                                           
                        Investment Companies        Structured Notes      
                        Investment Funds            Swaps                 
                        Loan Participations         U.S. Governments      
                        Preferred Stock             Warrants              
                        Repurchase Agreements       When Issued Securities
                        Rights                      Zero Coupons          
                        Structured Investments                            

Comparative Index:      MSCI World Ex-U.S. Index

Strategies:             International Equity Investing
                        Emerging Markets Investing
                        Foreign Investing

Portfolio
Management Team:        Hassan Elmasry and Horacio A. Valerias
    

- --------------------------------------------------------------------------------

   
Emerging Markets Value Portfolio - (formerly, the Emerging Markets Portfolio) (a
non-diversified portfolio)

Objective:              To achieve long-term capital growth by investing
                        primarily in common stocks of emerging markets issuers.

Approach:               The Adviser evaluates both short-term and long-term
                        international economic trends and relative
                        attractiveness of emerging markets and individual
                        emerging market securities. The Adviser selects common
                        stocks which are deemed to be undervalued at the time of
                        purchase, based on proprietary measures of value.

Policies:               Generally at least 65% invested in Equity Securities of
                        Emerging Markets Issuers, which are deemed to be
                        undervalued.

                        Derivatives may be used to pursue portfolio strategy.

Allowable               ADRs                        Eastern European Issuers  
Investments:            Agencies                    Emerging Markets Issuers  
                        Brady Bonds                 Foreign Bonds             
                        Cash Equivalents            Foreign Currency          
                        Common Stocks               Foreign Equities          
                        Convertibles                Forwards                  
                        Corporates                  Futures & Options         
                                         
                        High Yield                  Structured Investments 
                        Investment Companies        Structured Notes       
                        Investment Funds            Swaps                  
                        Loan Participations         U.S. Governments       
                        Preferred Stock             Warrants               
                        Repurchase Agreements       When Issued Securities 
                        Rights                      Zero Coupons           
                        
Comparative Index:      MSCI Emerging Markets Free Index

Strategies:             Emerging Markets Investing
                        Foreign Investing
                        Non-Diversified Status    
                        Value Stock Investing

Portfolio                    
Manager:                Horacio A. Valerias
    


- --------------------------------------------------------------------------------
MAS Fund - 18          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Mid Cap Growth Portfolio

Objective:              To achieve long-term capital growth by investing
                        primarily in common stocks of smaller and medium size
                        companies which are deemed by the Adviser to offer
                        long-term growth potential. Due to its emphasis on
                        long-term capital growth, dividend income will be lower
                        than for the Equity and Value Portfolios.

Approach:               The Adviser uses a four-part process combining
                        quantitative, fundamental, and valuation analysis with a
                        strict selling discipline. Stocks that pass an initial
                        screen based on estimate revisions undergo detailed
                        fundamental research. Valuation analysis is used to
                        eliminate the most overvalued securities. Holdings are
                        sold when their estimate-revision scores fall to
                        unacceptable levels, when fundamental research uncovers
                        unfavorable trends, or when their valuations exceed the
                        level that the Adviser believes is reasonable given
                        their growth prospects.

Policies:               Generally at least 65% invested in Equity Securities of
                        mid-cap companies offering long-term growth potential 
                        Up to 5% invested in Foreign Equities (excluding ADRs)
                        Derivatives may be used to pursue portfolio strategy
    

Capitalization Range:   Generally $300 million to $3 billion

   
Allowable Investments:  ADRs                     Foreign Currency         
                        Cash Equivalents         Foreign Equities         
                        Common Stock             Futures & Options        
                        Convertibles         

                        Investment Companies     Rights                
                        Preferred Stock          Warrants              
                        Repurchase Agreements    When Issued Securities
                        
Comparative Index:      S&P MidCap 400 Index

Strategies:             Growth Stock Investing

Portfolio
Management Team:        Arden C. Armstrong and Abhi Y. Kanitkar
    

- --------------------------------------------------------------------------------

Mid Cap Value Portfolio

   
Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in common stocks with equity
                        capitalizations in the range of the companies
                        represented in the S&P MidCap 400 Index which are deemed
                        by the Adviser to be relatively undervalued based on
                        certain proprietary measures of value. The portfolio
                        will typically exhibit a lower price/earnings value
                        ratio than the S&P MidCap 400 Index.

Approach:               The Adviser selects common stocks which are deemed to be
                        undervalued at the time of purchase, based on
                        proprietary measures of value. The portfolio will be
                        structured taking into account the economic sector
                        weights of the S&P MidCap 400 Index, with sector weights
                        normally being within 5% of the sector weights of the
                        Index.

Policies:               Generally at least 65% invested in Equity Securities of
                        mid-cap companies, which are deemed to be undervalued 
                        Up to 5% invested in Foreign Equities (excluding ADRs)
                        Derivatives may be used to pursue portfolio strategy
    

Capitalization Range:   Generally matching the S&P MidCap 400 Index (currently
                        $500 million to $6 billion)

   
Allowable Investments:  ADRs                            Corporates        
                        Agencies                        Foreign Bonds     
                        Cash Equivalents                Foreign Equities  
                        Common Stocks                   Foreign Currency  
                        Convertibles                    Forwards          
                                              
                        Futures & Options               Swaps             
                        Investment Companies            U.S. Governments      
                        Preferred Stock                 Warrants              
                        Repurchase Agreements           When Issued Securities
                        Rights                          Zero Coupons          

Comparative Index:      S&P MidCap 400 Index

Strategies:             Value Stock Investing

Portfolio
Management Team:        Bradley S. Daniels, William B. Gerlach, Chris Leavy and
                        Gary G. Schlarbaum. 
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 19
<PAGE>

   
Small Cap Value Portfolio (not currently being offered to new investors)

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in common stocks with equity
                        capitalizations in the range of the companies
                        represented in the Russell 2000 Small Stock Index which
                        are deemed by the Adviser to be relatively undervalued
                        based on certain proprietary measures of value. The
                        portfolio will typically exhibit lower price/earnings
                        and price/book value ratios than the Russell 2000.
                        Dividend income will typically be lower than for the
                        Equity and Value Portfolios.

Approach:               The Adviser selects common stocks which are deemed to be
                        undervalued at the time of purchase, based on
                        proprietary measures of value. The portfolio will be
                        structured taking into account the economic sector
                        weights of the Russell 2000 Index, with the portfolio's
                        sector weights normally being within 5% of the sector
                        weights for the Index.

Policies:               Generally at least 65% invested in Equity Securities of
                        small-cap companies, which are deemed to be undervalued
                        Up to 5% invested in Foreign Equities (excluding ADRs)
                        Derivatives may be used to pursue portfolio strategy
    

Capitalization Range:   Generally matching the Russell 2000 size distribution
                        (currently $50 million to $1 billion)

   
Allowable Investments:  ADRs                    Corporates          
                        Agencies                Foreign Bonds       
                        Cash Equivalents        Foreign Currency    
                        Common Stocks           Foreign Equities    
                        Convertibles            Forwards            
                                             
                        Futures & Options       Swaps                 
                        Investment Companies    U.S. Governments      
                        Preferred Stock         Warrants              
                        Repurchase Agreements   When Issued Securities
                        Rights                  Zero Coupons

Comparative Index:      Russell 2000 Index

Strategies:             Value Stock Investing

Portfolio
Management Team:        Bradley S. Daniels, William B. Gerlach, Chris Leavy and
                        Gary G. Schlarbaum 
    


- --------------------------------------------------------------------------------
MAS Fund - 20          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

Value Portfolio

   
Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in common stocks with equity
                        capitalizations usually greater than $300 million which
                        are deemed by the Adviser to be relatively undervalued,
                        based on various measures such as price/earnings ratios
                        and price/book ratios. While capital return will be
                        emphasized somewhat more than income return, the
                        portfolio's total return will consist of both capital
                        and income returns. It is expected that income return
                        will be higher than that of the Equity Portfolio because
                        stocks which are deemed to be undervalued in the
                        marketplace have, under most market conditions, provided
                        higher dividend income returns than stocks which are
                        deemed to have long-term earnings growth potential which
                        normally sell at higher price/earnings ratios.
    

Approach:               The Adviser selects common stocks which are deemed to be
                        undervalued relative to the stock market in general as
                        measured by the Standard & Poor's 500 Index, based on
                        the value measures such as price/earnings ratios and
                        price/book ratios, as well as fundamental research.

   
Policies:               Generally at least 65% invested in Equity Securities,
                        which are deemed to be undervalued 
                        Up to 5% invested in Foreign Equities (excluding ADRs) 
                        Derivatives may be used to pursue portfolio strategy
    

Capitalization Range:   Generally greater than $300 million

   
Allowable Investments:  ADRs                      Corporates        
                        Agencies                  Foreign Bonds     
                        Cash Equivalents          Foreign Currency  
                        Common Stocks             Foreign Equities   
                        Convertibles              Forwards          

                        Futures & Options         Swaps                 
                        Investment Companies      U.S. Governments      
                        Preferred Stock           Warrants              
                        Repurchase Agreements     When Issued Securities
                        Rights                    Zero Coupons          

Comparative Index:      S&P 500 Index

Strategy:               Value Stock Investing

Portfolio
Management Team:        Richard M. Behler, Nicholas J. Kovich, Brian Kramp and
                        Robert J. Marcin
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 21
<PAGE>

Cash Reserves Portfolio

   
Objective:              To realize maximum current income, consistent with the
                        preservation of capital and liquidity, by investing in
                        money market instruments and other short-term securities
                        having expected maturities of thirteen months or less.
                        The portfolio's average weighted maturity will not
                        exceed 90 days. The securities in which the portfolio
                        will invest may not yield as high a level of current
                        income as securities of lower quality or longer
                        maturities which generally have less liquidity, greater
                        market risk and more price fluctuation. The portfolio is
                        designed to provide maximum principal stability for
                        investors seeking to invest funds for the short term,
                        or, for investors seeking to combine a long-term
                        investment program in other portfolios of the Fund with
                        an investment in money market instruments. The portfolio
                        seeks to maintain, but there can be no assurance that it
                        will be able to maintain, a constant net asset value of
                        $1.00 per share.
    

Approach:               The Adviser selects a diversified portfolio of money
                        market securities of government and corporate issuers,
                        any of which may be variable or floating rate, and which
                        have remaining maturities of thirteen months or less
                        from the date of purchase. For the purpose of
                        determining remaining maturity on Floaters, demand
                        features and interest reset dates will be taken into
                        consideration.

Policies:               The Portfolio seeks to maintain, but there can be no
                        assurance that it will be able to maintain, a constant
                        net asset value of $1.00 per share.

Quality Specifications: 100% of Commercial Paper Rated in Top Tier

   
Maturity and Duration:  Dollar weighted average maturity less than 90 days 
                        Individual maturities 13 months or less

Allowable Investments:  Agencies              Corporates               
                        Asset-Backeds         Floaters                 
                        Cash Equivalents      Investment Companies     
                        Commercial Paper      Repurchase Agreements

                        U.S. Governments 
                        Yankees          
                        Zero Coupons     
                        
Comparative Index:      Lipper Money Market Index

Strategy:               Money Market Investing

Portfolio
Management Team:        Abigail Jones Feder and Ellen D. Harvey
    


- --------------------------------------------------------------------------------
MAS Fund - 22          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Domestic Fixed Income Portfolio

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of U.S.
                        Government securities and other investment grade
                        fixed-income securities of domestic issuers.

Approach:               The Adviser actively manages the maturity and duration
                        structure of the portfolio in anticipation of long-term
                        trends in interest rates and inflation. Investments are
                        diversified among a wide variety of U.S. Fixed-Income
                        Securities in all market sectors.

Policies:               Generally at least 65% invested in Fixed-Income
                        Securities 
                        100% invested in domestic issuers 
                        May invest greater than 50% in Mortgage Securities
                        Derivatives may be used to pursue portfolio strategy

Quality Specifications: 80% of Fixed-Income Securities rated A or higher (or its
                        equivalent) 
                        May invest up to 20% in Fixed-Income Securities rated
                        BBB (or its equivalent)

Maturity and Duration:  Average weighted maturity generally greater than 5 years

Allowable Investments:  Agencies                    Corporates           
                        Asset-Backeds               Floaters             
                        Cash Equivalents            Futures & Options    
                        CMOs                        Inverse Floaters      
                        Convertibles                Investment Companies 
                                           
                        Mortgage Securities         Structured Notes      
                        Municipals                  Swaps                 
                        Preferred Stock             U.S. Governments      
                        Repurchase Agreements       When Issued Securities
                        SMBS                        Zero Coupons

Comparative Index:      Salomon Broad Investment Grade 
                        Lehman Brothers Aggregate

Strategies:             Maturity and Duration Management 
                        Value Investing 
                        Mortgage Investing

Portfolio
Management Team:        Thomas L. Bennett, Kenneth B. Dunn and Richard B. Worley
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 23
<PAGE>

Fixed Income Portfolio

   
Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of U.S.
                        Government securities, corporate bonds (including bonds
                        rated below investment grade, commonly referred to as
                        junk bonds), foreign fixed-income securities and
                        mortgage-backed securities of domestic issuers and other
                        fixed-income securities. The portfolio's average
                        weighted maturity will ordinarily be greater than five
                        years.

Approach:               The Adviser actively manages the maturity and duration
                        structure of the portfolio in anticipation of long-term
                        trends in interest rates and inflation. Investments are
                        diversified among a wide variety of Fixed-Income
                        Securities in all market sectors.
    

Policies:               Generally at least 65% invested in Fixed-Income 
                        Securities
                        May invest greater than 50% in Mortgage Securities
                        Derivatives may be used to pursue portfolio strategy

Quality Specifications: 80% Investment Grade Securities
                        Up to 20% High Yield

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  Agencies                  Floaters                  
                        Asset-Backeds             Foreign Bonds             
                        Brady Bonds               Foreign Currency          
                        Cash Equivalents          Forwards                  
                        CMOs                      Futures & Options         
                        Convertibles              High Yield                
                        Corporates                Inverse Floaters          

                        Investment Companies      Structured Notes      
                        Loan Participations       Swaps                 
                        Mortgage Securities       U.S. Governments      
                        Municipals                When Issued Securities
                        Preferred Stock           Yankees               
                        Repurchase Agreements     Zero Coupons          
                        SMBS

Comparative Index:      Salomon Broad Investment Grade
                        Lehman Brothers Aggregate

Strategies:             Maturity and Duration Management 
                        Value Investing 
                        Mortgage Investing 
                        High Yield Investing 
                        Foreign Investing 
                        Foreign Fixed Income Investing

Portfolio
Management Team:        Thomas L. Bennett, Kenneth B. Dunn and Richard B. Worley
    


- --------------------------------------------------------------------------------
MAS Fund - 24          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

Fixed Income Portfolio II

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of U.S.
                        Government securities and other investment grade
                        fixed-income securities.

Approach:               The Adviser actively manages the maturity and duration
                        structure of the portfolio in anticipation of long-term
                        trends in interest rates and inflation. Investments are
                        diversified among a wide variety of Fixed-Income
                        Securities in all market sectors.

Policies:               Generally at least 65% invested in Fixed-Income 
                        Securities
                        May invest greater than 50% in Mortgage Securities
                        Derivatives may be used to pursue portfolio strategy

Quality Specifications: 100% Investment Grade Securities

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  Agencies               Floaters               
                        Asset-Backeds          Foreign Bonds          
                        Brady Bonds            Foreign Currency       
                        Cash Equivalents       Forwards                
                        CMOs                   Futures & Options      
                        Convertibles           Inverse Floaters       
                        Corporates        

                        Investment Companies   Structured Notes      
                        Mortgage Securities    Swaps                 
                        Municipals             U.S. Governments      
                        Preferred Stock        When Issued Securities
                        Repurchase Agreements  Yankees               
                        SMBS                   Zero Coupons
    

Comparative Index:      Salomon Broad Investment Grade 
                        Lehman Brothers Aggregate

   
Strategies:             Maturity and Duration Management 
                        Value Investing 
                        Mortgage Investing 
                        Foreign Investing 
                        Foreign Fixed Income Investing

Portfolio
Management Team:        Thomas L. Bennett, Kenneth B. Dunn and Richard B. Worley
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 25
<PAGE>

   
Global Fixed Income Portfolio
(a non-diversified portfolio)

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in high grade fixed-income securities
                        of U.S. and foreign issuers. Total return is the
                        combination of income and changes in value. The
                        portfolio's average weighted maturity will ordinarily be
                        greater than five years.

Approach:               The Adviser manages the duration, country, and currency
                        exposure of the portfolio by combining fundamental
                        research on relative values with analyses of economic,
                        interest-rate, and exchange-rate trends. The Adviser
                        will invest in mortgage and corporate bonds when it
                        believes they offer the most value, although most
                        foreign currency denominated investments are in
                        government and supranational securities.

Policies:               Generally at least 65% invested in Fixed-Income
                        Securities of issuers in at least 3 countries, one of
                        which may be the U.S.

                        Derivatives may be used to represent country
                        investments, and otherwise pursue portfolio strategy
    

Quality Specifications: 95% Investment Grade Securities

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  Agencies                  Eastern European Issuers  
                        Asset-Backeds             Emerging Markets Issuers  
                        Brady Bonds               Floaters                  
                        Cash Equivalents          Foreign Bonds             
                        CMOs                      Foreign Currency          
                        Convertibles              Forwards                  
                        Corporates                Futures & Options         

                        Inverse Floaters          Structured Notes       
                        Investment Companies      Swaps                  
                        Mortgage Securities       U.S. Governments       
                        Municipals                When Issued Securities 
                        Preferred Stock           Yankees                
                        Repurchase Agreements     Zero Coupons           
                        SMBS                                             
    

Comparative Index:      Salomon World Government Bond Index

   
Strategies:             Foreign Investing
                        Foreign Fixed Income Investing
                        Maturity and Duration Management
                        Value Investing 
                        Non-Diversified Status 
                        Emerging Markets Investing
                        Mortgage Investing

Portfolio
Management Team:        J. David Germany, Michael Kushma, Paul F. O'Brien and
                        Richard B. Worley
    


- --------------------------------------------------------------------------------
MAS Fund - 26          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

High Yield Portfolio

   
Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in high yielding corporate
                        fixed-income securities (including bonds rated below
                        investment grade, commonly referred to as junk bonds).
                        The portfolio may also invest in U.S. Government
                        securities, mortgage-backed securities, investment grade
                        corporate bonds and in short-term fixed-income
                        securities, such as certificates of deposit, treasury
                        bills, and commercial paper. The portfolio expects to
                        achieve its objective by earning a high rate of current
                        income, although the portfolio may seek capital growth
                        opportunities when consistent with its objective. The
                        portfolio's average weighted maturity will ordinarily be
                        greater than five years.
    

Approach:               The Adviser uses equity and fixed-income valuation
                        techniques and analyses of economic and industry trends
                        to determine portfolio structure. Individual securities
                        are selected, and monitored, by fixed-income portfolio
                        managers who specialize in corporate bonds and use
                        in-depth financial analysis to uncover opportunities in
                        undervalued issues.

   
Policies:               Generally at least 65% invested in High Yield securities
                        (commonly referred to as junk bonds) 

                        Derivatives may be used to pursue portfolio strategy
    

Quality Specifications: None

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  Agencies                     Emerging Markets Issuers 
                        Asset-Backeds                Floaters                 
                        Brady Bonds                  Foreign Bonds            
                        Cash Equivalents             Foreign Currency          
                        CMOs                         Foreign Equities         
                        Convertibles                 Forwards                 
                        Corporates                   Futures & Options        
                        Eastern European Issuers     High Yield               

                        Inverse Floaters             Structured Notes      
                        Investment Companies         Swaps                 
                        Loan Participations          U.S. Governments      
                        Mortgage Securities          When Issued Securities
                        Municipals                   Yankees               
                        Preferred Stock              Zero Coupons          
                        Repurchase Agreements                          
                        SMBS

Comparative Index:      Salomon High Yield Market Index

Strategies:             High Yield Investing 
                        Maturity and Duration Management 
                        Value Investing 
                        Mortgage Investing
                        Foreign Investing
                        Foreign Fixed Income Investing
                        Emerging Markets Investing

Portfolio
Management Team:        Robert E. Angevine, Thomas L. Bennett and Stephen F.
                        Esser
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 27
<PAGE>

   
Intermediate Duration Portfolio

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of U.S.
                        Government securities and investment grade corporate,
                        foreign and other investment grade fixed-income
                        securities. The portfolio will maintain an average
                        duration of between two and five years.
    

Approach:               The Adviser constructs a portfolio with a duration
                        between two and five years by actively managing the
                        maturity and duration structure of the portfolio in
                        anticipation of long-term trends in interest rates and
                        inflation. Investments are diversified among a wide
                        variety of investment grade Fixed-Income Securities in
                        all market sectors.

Policies:               Generally at least 65% invested in Fixed-Income
                        Securities 

                        Derivatives may be used to pursue portfolio strategy 

                        May invest greater than 50% in Mortgage Securities

Quality Specifications: 100% Investment Grade Securities

Maturity and Duration:  Average duration between 2 and 5 years

   
Allowable Investments:  Agencies                 Floaters                 
                        Asset-Backeds            Foreign Bonds            
                        Brady Bonds              Foreign Currency         
                        Cash Equivalents         Forwards                 
                        CMOs                     Futures & Options        
                        Convertibles             Inverse Floaters         
                        Corporates               
                                             
                        Investment Companies     Structured Notes      
                        Mortgage Securities      Swaps                 
                        Municipals               U.S. Governments      
                        Preferred Stock          When Issued Securities
                        Repurchase Agreements    Yankees               
                        SMBS                     Zero Coupons
    

Comparative Index:      Lehman Brothers Intermediate Government/Corporate Index

   
Strategies:             Maturity and Duration Management 
                        Value Investing 
                        Mortgage Investing
                        Foreign Investing
                        Foreign Fixed Income Investing

Portfolio
Management Team:        Ellen D. Harvey, Scott F. Richard and Christian G. Roth
    


- --------------------------------------------------------------------------------
MAS Fund - 28          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
International Fixed Income Portfolio
(a non-diversified portfolio)
    

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing primarily in high-grade fixed-income
                        securities of foreign issuers.

   
Approach:               The Adviser manages the duration, country, and currency
                        exposure of the portfolio by combining fundamental
                        research on relative values with analyses of economic,
                        interest-rate, and exchange-rate trends. The Adviser
                        will invest in mortgage and corporate bonds when it
                        believes they offer the most value, although most
                        foreign currency denominated investments are in
                        government and supranational securities.
    

Policies:               Generally at least 80% invested in Fixed-Income
                        Securities of issuers in at least 3 countries other than
                        the U.S. 

                        Derivatives may be used to represent country
                        investments, and otherwise pursue portfolio strategy

Quality Specifications: 95% Investment Grade Securities

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  Agencies                      Eastern European Issuers
                        Asset-Backeds                 Emerging Markets Issuers
                        Brady Bonds                   Floaters                
                        Cash Equivalents              Foreign Bonds           
                        CMOs                          Foreign Currency        
                        Convertibles                  Forwards                
                        Corporates                    Futures & Options       
                                          
                        Inverse Floaters              Structured Notes      
                        Investment Companies          Swaps                 
                        Mortgage Securities           U.S. Governments      
                        Municipals                    When Issued Securities
                        Preferred Stock               Yankees               
                        Repurchase Agreements         Zero Coupons          
                        SMBS
    

Comparative Index:      Salomon World Government Bond Index Except U.S.

   
Strategies:             Foreign Investing
                        Foreign Fixed Income Investing
                        Maturity and Duration Management
                        Value Investing 
                        Non-Diversified Status 
                        Emerging Markets Investing 
                        Mortgage Investing

Portfolio
Management Team:        J. David Germany, Michael Kushma, Paul F. O'Brien and
                        Richard B. Worley
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 29
<PAGE>

Limited Duration Portfolio

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of U.S.
                        Government securities, investment-grade corporate bonds
                        and other fixed-income securities. The portfolio will
                        maintain an average duration of between one and three
                        years. Duration is a measure of the life of the
                        portfolio's debt securities on a present-value basis and
                        is indicative of a security's price volatility relative
                        to interest rate changes.

   
Approach:               The Adviser manages the duration of the overall
                        portfolio as a more effective way to control
                        interest-rate risk than limiting the maturity of
                        individual securities within the portfolio. In this way
                        investors can benefit from opportunities across the
                        entire yield curve as well as in various market sectors,
                        and at the same time limit the volatility of investment
                        returns. The Adviser establishes the duration target
                        through the use of its top-down view of the economy and
                        analysis of the current level of interest rates and the
                        shape of the yield curve. The Adviser then strives to
                        purchase the most attractively priced portfolio that
                        meets our duration and investment objectives. When
                        purchasing securities other than U.S. Governments, the
                        Adviser evaluates credit, liquidity, and option risk.
                        When the Adviser believes the portfolio is compensated
                        for these risks, it includes agency, mortgage, and
                        corporate securities which meet the portfolio's quality
                        specifications.
    

Policies:               Generally at least 65% invested in Fixed-Income
                        Securities
                        Derivatives may be used to pursue portfolio strategy

   
Quality Specifications: 100% Investment Grade Securities
    

Maturity and Duration:  Average duration between 1 and 3 years

   
Allowable Investments:  Agencies                  Convertibles              
                        Asset-Backeds             Corporates                
                        Brady Bonds               Floaters                  
                        Cash Equivalents          Futures & Options         
                        CMOs                      Investment Companies      
                                           
                        Mortgage Securities       When Issued Securities
                        Repurchase Agreements     Yankees               
                        Structured Notes          Zero Coupons          
                        Swaps                                           
                        U.S. Governments

Comparative Index:      Salomon 1-3 Year Treasury/Government Sponsored Index
    

Strategies:             Maturity and Duration Management 
                        Value Investing 
                        Mortgage Investing

   
Portfolio
Management Team:        Ellen D. Harvey, Scott F. Richard and Christian G. Roth
    


- --------------------------------------------------------------------------------
MAS Fund - 30          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

Mortgage-Backed Securities Portfolio

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing primarily (at least 65% of its assets
                        under normal circumstances) in mortgage-backed
                        securities. In addition, the portfolio may also invest
                        in U.S. government securities and in short-term
                        fixed-income securities such as certificates of deposit,
                        treasury bills, and commercial paper. The portfolio's
                        average weighted maturity will ordinarily be greater
                        than seven years.

   
Approach:               The Adviser sets three portfolio targets: (1)
                        interest-rate sensitivity; (2) yield-curve sensitivity;
                        and (3) prepayment sensitivity. The Adviser increases
                        the sensitivity of the portfolio to changes in interest
                        rates when bonds offer greater value on the basis of
                        inflation-adjusted interest rates. Similarly, the
                        Adviser increases yield-curve sensitivity when
                        long-maturity interest rates offer exceptional value
                        relative to short-maturity interest rates. Finally, the
                        Adviser increases prepayment exposure when mortgage
                        yields, adjusted for probable prepayments, indicate
                        unusual value in Mortgage Securities.
    

Policies:               Generally at least 65% invested in Mortgage Securities
                        Derivatives may be used to pursue portfolio strategy

   
Quality Specifications: 100% Investment Grade Securities
    

Maturity and Duration:  Average weighted maturity generally greater than 7 years
                        Duration generally between 2 and 7 years

   
Allowable Investments:  Agencies                  Futures & Options     
                        Asset-Backeds             Inverse Floaters      
                        Cash Equivalents          Investment Companies  
                        CMOs                      Mortgage Securities   
                        Floaters         

                        Municipals                Swaps                  
                        Repurchase Agreements     U.S. Governments       
                        SMBS                      When Issued Securities 
                        Structured Notes          Zero Coupons

Comparative Index:      Lehman Mortgage Index

Strategies:             Mortgage Investing 
                        Maturity and Duration Management
                        Value Investing

Portfolio
Management Team:        Kenneth B. Dunn, Scott F. Richard and Roberto Sella
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 31
<PAGE>

Municipal Portfolio

Objective:              To realize above-average total return over a market
                        cycle of three to five years, consistent with the
                        conservation of capital and the realization of current
                        income which is exempt from federal income tax, by
                        investing in a diversified portfolio of fixed-income
                        securities.

   
Approach:               The Adviser varies portfolio structure-the average
                        duration and maturity and the amount of the portfolio
                        invested in various types of bonds-according to its
                        outlook for interest rates and its analysis of the risks
                        and rewards offered by different classes of bonds. The
                        portfolio will invest in taxable bonds only in cases
                        where the Adviser believes they improve the risk/reward
                        profile of the portfolio on an after-tax basis.

Policies:               Generally at least 80% invested in Municipals
                        Derivatives may be used to pursue portfolio strategy

Quality Specifications: 80% Investment Grade Securities
                        Up to 20% High Yield
    

Maturity and Duration:  Average weighted maturity generally between 5 and 10
                        years

   
Allowable Investments:  Agencies                     Emerging Markets Issuers
                        Asset-Backeds                Floaters                
                        Brady Bonds                  Foreign Bonds           
                        Cash Equivalents             Foreign Currency        
                        CMOs                         Forwards                 
                        Convertibles                 Futures & Options       
                        Corporates                   High Yield              
                        Eastern European Issuers

                        Inverse Floaters             Structured Notes      
                        Investment Companies         Swaps                 
                        Mortgage Securities          Taxable Investments   
                        Municipals                   U.S. Governments      
                        Preferred Stock              When Issued Securities
                        Repurchase Agreements        Yankees               
                        SMBS                         Zero Coupons
    

Comparative Index:      A weighted blend of quarterly returns compiled by the
                        Adviser using:
                        
                             50% Lehman 5-Year Municipal Bond Index 
                             50% Lehman 10-Year Municipal Bond Index

Strategies:             Municipals Management 
                        Maturity and Duration Management 
                        Value Investing 
                        High Yield Investing
                        Mortgage Investing

   
Portfolio
Management Team:        Kenneth B. Dunn, Steven K. Kreider and Scott F. Richard
    


- --------------------------------------------------------------------------------
MAS Fund - 32          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

PA Municipal Portfolio

Objective:              To realize above-average total return over a market
                        cycle of three to five years, consistent with the
                        conservation of capital and the realization of current
                        income which is exempt from federal income tax and
                        Pennsylvania personal income tax by investing primarily
                        in a diversified portfolio of fixed-income securities.

Approach:               The Adviser varies portfolio Structure-the average
                        duration and maturity and the amount of the portfolio
                        invested in various types of bonds-according to its
                        outlook for interest rates and its analysis of the risks
                        and rewards offered by different classes of bonds. The
                        portfolio will invest in federally or Pennsylvania State
                        taxable bonds only in cases where MAS believes they
                        improve the risk/reward profile of the portfolio on an
                        after-tax basis for Pennsylvania residents.

Policies:               Generally at least 80% invested in Municipal Securities
                        Generally at least 65% invested in PA Municipal
                        Securities 
                        Derivatives may be used to pursue portfolio strategy

Quality Specifications: 80% Investment Grade Securities 
                        Up to 20% High Yield

Maturity and Duration:  Average weighted maturity generally between 5 and 10
                        years

   
Allowable Investments:  Agencies                     Emerging Markets Issuers  
                        Asset-Backeds                Floaters                  
                        Brady Bonds                  Foreign Bonds             
                        Cash Equivalents             Foreign Currency          
                        CMOs                         Forwards                   
                        Convertibles                 Futures & Options         
                        Corporates                   High Yield                
                        Eastern European Issuers     Inverse Floaters          
                                                    
                        Investment Companies         Structured Notes      
                        Mortgage Securities          Swaps                 
                        Municipals                   Taxable Investments   
                        PA Municipals                U.S. Governments      
                        Preferred Stock              When Issued Securities
                        Repurchase Agreements        Yankees               
                        SMBS                         Zero Coupons
    

Comparative Index:      A weighted blend of quarterly returns compiled by the
                        Adviser using:

                             50% Lehman 5-Year Municipal Bond Index 
                             50% Lehman 10-Year Municipal Bond Index

Strategies:             Municipals Management
                        Maturity and Duration Management           
                        Value Investing                         
                        High Yield Investing                           
                        Mortgage Investing

   
Portfolio
Management Team:        Kenneth B. Dunn, Steven K. Kreider and Scott F. Richard
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 33
<PAGE>

Special Purpose Fixed Income Portfolio

Objective:              To achieve above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of U.S.
                        Government securities, corporate bonds (including bonds
                        rated below investment grade, commonly referred to as
                        junk bonds), foreign fixed-income securities and
                        mortgage-backed securities and other fixed-income
                        securities. The portfolio is structured to complement an
                        investment in one or more of the Fund's equity
                        portfolios for investors seeking a balanced investment.

Approach:               The Adviser actively manages the maturity and duration
                        structure of the portfolio in anticipation of long-term
                        trends in interest rates and inflation. Investments are
                        diversified among a wide variety of Fixed-Income
                        Securities in all market sectors. Both duration/maturity
                        strategy and sector allocation are determined based on
                        the presumption that investors are combining an
                        investment in the portfolio with an equity investment.

Policies:               Generally at least 65% invested in Fixed-Income
                        Securities 
                        May invest greater than 50% in Mortgage Securities
                        Derivatives may be used to pursue portfolio strategy

Quality Specifications: None

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  Agencies                    Floaters                  
                        Asset-Backeds               Foreign Bonds             
                        Brady Bonds                 Foreign Currency Mortgage 
                        Cash Equivalents            Forwards                  
                        CMOs                        Futures & Options         
                        Convertibles                High Yield                
                        Corporates                  Inverse Floaters          
                                         
                        Investment Companies        SMBS                      
                        Loan Participations         Structured Notes          
                        Securities                  Swaps                     
                        Municipals                  U.S. Governments          
                        Preferred Stock             When Issued Securities
                        Repurchase Agreements       Yankees                   
                        Zero Coupons                                          
    

Comparative Index:      Salomon Broad Investment Grade 
                        Lehman Brothers Aggregate

   
Strategies:             Maturity and Duration Management 
                        Fixed Income Management and Asset Allocation
                        Value Investing 
                        Mortgage Investing 
                        High Yield Investing
                        Foreign Investing
                        Foreign Fixed Income Investing

Portfolio
Management Team:        Thomas L. Bennett, Kenneth B. Dunn and Richard B. Worley
    


- --------------------------------------------------------------------------------
MAS Fund - 34          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Multi-Market Fixed Income Portfolio

Objective:              To realize above-average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing primarily in a diversified portofolio
                        of fixed-income securities of U.S. and foreign issuers.

Approach:               The Adviser determines the mix of investments in
                        domestic and foreign Fixed-Income and High Yield
                        Securities expected to maximize available total return.
                        Strategic judgements on the asset mix are based on
                        valuation disciplines and tools for analysis which have
                        been developed by the Adviser to compare the relative
                        potential returns and risks of global bond markets.

Policies:               Generally at least 65% in Fixed-Income Securities 
                        Derivatives may be used to pursue portfolio strategy

Quality Specifications: None

Maturity and Duration:  Average weighted maturity generally greater than 5 years

Allowable Investments:  Agencies                     Emerging Markets Issuers
                        Asset-Backeds                Floaters                
                        Brady Bonds                  Foreign Bonds           
                        Cash Equivalents             Foreign Currency        
                        CMOs                         Forwards                
                        Convertibles                 Futures & Options       
                        Corporates                   High Yield              
                        Eastern European Issuers     Inverse Floaters    
                                                     
                        Investment Companies         Structured Notes      
                        Loan Assignments             Structured Securities 
                        Loan Participations          Swaps                 
                        Mortgage Securities          U.S. Governments      
                        Municipals                   Warrants              
                        Preferred Stock              When Issued Securities
                        Repurchase Agreements        Yankees               
                        SMBS                         Zero Coupons          

Comparative Index:      A weighted blend of quarterly returns compiled by the
                        Adviser using

                             60% Salomon Broad Investment Grade Index
                             20% Salomon World Government Bond Index Ex U.S.
                             12% Salomon High Yield Market Index
                             8% J.P. Morgan Emerging Markets Bond Index

Strategies:             Foreign Investing 
                        Foreign Fixed Income Investing
                        Maturity and Duration Management 
                        Value Investing
                        Emerging Markets Investing
                        High Yield Investing
                        Mortgage Investing

Portfolio
Management Team:        Thomas L. Bennett, Kenneth B. Dunn Stephen F. Esser, J.
                        David Germany, Paul Ghaffari and Richard B. Worley
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 35
<PAGE>

   
Balanced Portfolio
    

Objective:              To achieve above average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of common
                        stocks and fixed-income securities. When the Adviser
                        judges the relative outlook for the equity and
                        fixed-income markets to be neutral the portfolio will be
                        invested 60% in common stocks and 40% in fixed-income
                        securities. The asset mix may be changed, however, with
                        common stocks ordinarily representing between 45% and
                        75% of the total investment. The average weighted
                        maturity of the fixed-income portion of the portfolio
                        will ordinarily be greater than five years.

Approach:               The Adviser determines investment strategies for the
                        equity and fixed-income portions of the portfolio
                        separately and then determines the mix of those
                        strategies expected to maximize the return available
                        from both the stock and bond markets. Strategic
                        judgments on the equity/fixed-income asset mix are based
                        on valuation disciplines and tools for analysis
                        developed by the Adviser over its twenty-five year
                        history of managing balanced accounts.

Policies:               Generally 45% to 75% invested in Equity Securities 
                        Up to 25% invested in Foreign Bonds and/or Foreign 
                        Equities (excluding ADRs) 
                        Up to 10% invested in Brady Bonds 
                        At least 25% invested in senior Fixed-Income Securities
                        Derivatives may be used to pursue portfolio strategy

Equity Capitalization:  Generally greater than $1 billion

Quality Specifications: None

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  ADRs                        Eastern European Issuers
                        Agencies                    Floaters                
                        Asset-Backeds               Foreign Bonds           
                        Brady Bonds                 Foreign Currency        
                        Cash Equivalents            Foreign Equities        
                        CMOs                        Forwards                
                        Common Stocks               Futures & Options       
                        Convertibles                High Yield              
                        Corporates                  Inverse Floaters        
                                            
                        Investment Companies        SMBS                  
                        Investment Funds            Structured Notes      
                        Loan Participations         Swaps                 
                        Mortgage Securities         U.S. Governments      
                        Municipals                  Warrants              
                        Preferred Stock             When Issued Securities
                        Repurchase Agreements       Yankees               
                        Rights                      Zero Coupons          
                                                                           

Comparative Index:      A weighted blend of quarterly returns compiled by the
                        Adviser using:

                             60% S&P 500 Index
                             40% Salomon Broad Investment Grade Index

Strategies:             Asset Allocation Management 
                        Core Equity Investing 
                        Fixed Income Management and Asset Allocation 
                        Maturity and Duration Management 
                        Value Investing 
                        Mortgage Investing 
                        High Yield Investing
                        Foreign Investing
                        Foreign Fixed Income Investing

Portfolio
Management Team:        Thomas L. Bennett, Gary G. Schlarbaum, Horacio A.
                        Valeiras and Richard B. Worley
    


- --------------------------------------------------------------------------------
MAS Fund - 36          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

Multi-Asset-Class Portfolio

   
Objective:              To achieve above average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of common
                        stocks and fixed-income securities of U.S. and foreign
                        issuers.
    

Approach:               The Adviser determines the mix of investments in
                        domestic and foreign equity and fixed-income and high
                        yield securities expected to maximize available total
                        return. Strategic judgments on the asset mix are based
                        on valuation disciplines and tools for analysis which
                        have been developed by the Adviser to compare the
                        relative potential returns and risks of global stock and
                        bond markets.

   
Policies:               Generally at least 65% invested in issuers located in at
                        least 3 countries, including the U.S.
                        Derivatives may be used to pursue portfolio strategy
    

Domestic Equity 
Capitalization:         Generally greater than $1 billion

Quality Specifications: None

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  ADRs                      Eastern European Issuers  
                        Agencies                  Emerging Markets Issuers  
                        Asset-Backeds             Floaters                  
                        Brady Bonds               Foreign Bonds             
                        Cash Equivalents          Foreign Currency          
                        CMOs                      Foreign Equities          
                        Common Stocks             Forwards                  
                        Convertibles              Futures & Options         
                        Corporates                High Yield                
                                                  
                        Inverse Floaters          SMBS                  
                        Investment Companies      Structured Investments
                        Investment Funds          Structured Notes      
                        Loan Participations       Swaps                 
                        Mortgage Securities       U.S. Governments      
                        Municipals                Warrants              
                        Preferred Stock           When Issued Securities
                        Repurchase Agreements     Yankees               
                        Rights                    Zero Coupons          
                                                  
Comparative Index:      A weighted blend of quarterly returns compiled by the
                        Adviser using:

                             50% S&P 500 Index 
                             14% EAFE-GDP Weighted Index 
                             24% Salomon Broad Investment Grade Index 
                             6% Salomon World Government Bond Index Ex U.S. 
                             6% Salomon High Yield Market Index

Strategies:             Asset Allocation Management 
                        Fixed Income Management and Asset Allocation 
                        Maturity and Duration Management 
                        Value Investing
                        Foreign Investing
                        Foreign Fixed Income Investing 
                        Core Equity Investing 
                        International Equity Investing 
                        Emerging Markets Investing 
                        High Yield Investing
                        Mortgage Investing

Portfolio
Management Team:        Thomas L. Bennett, J. David Germany, Gary G. Schlarbaum,
                        Horacio A. Valeiras and Richard B. Worley

    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 37
<PAGE>

Balanced Plus Portfolio

Objective:              To achieve above average total return over a market
                        cycle of three to five years, consistent with reasonable
                        risk, by investing in a diversified portfolio of common
                        stocks of domestic and foreign issuers and fixed-income
                        securities.

Approach:               The Adviser determines the mix of investments in
                        domestic and foreign equity and fixed-income securities
                        expected to maximize available total return. Strategic
                        judgments on the asset mix are based on valuation
                        disciplines and tools for analysis which have been
                        developed by the Adviser to compare the relative
                        potential returns and risks of global stock and bond
                        markets. When the Adviser believes it to be in the best
                        interests of the fund, opportunistic investments in both
                        the high yield and international fixed-income markets
                        will be made.

Policies:               Generally at least 65% invested in issuers located in at
                        least 3 countries, including the U.S. 
                        Derivatives may be used to pursue portfolio strategy 
                        At least 25% invested in senior Fixed-Income Securities

Domestic Equity 
Capitalization:         Generally greater than $1 billion

Quality Specifications: None

Maturity and Duration:  Average weighted maturity generally greater than 5 years

   
Allowable Investments:  ADRs                        Eastern European Issuers
                        Agencies Emerging           Markets Issuers         
                        Asset-Backeds               Floaters                
                        Brady Bonds                 Foreign Bonds            
                        Cash Equivalents            Foreign Currency        
                        CMOs                        Foreign Equities         
                        Common Stocks               Forwards                 
                        Convertibles                Futures & Options       
                        Corporates                  High Yield              
                                                  
                        Inverse Floaters            SMBS                  
                        Investment Companies        Structured Investments
                        Investment Funds            Structured Notes      
                        Loan Participations         Swaps                 
                        Mortgage Securities         U.S. Governments      
                        Municipals                  Warrants              
                        Preferred Stock             When Issued Securities
                        Repurchase Agreements       Yankees               
                        Rights                      Zero Coupons          

Comparative Index:      A weighted blend of quarterly returns compiled by the
                        Adviser using:

                             54% S&P 500 Index    
                             40% Salomon Broad Investment Grade Index 
                             6% MSCI World Ex U.S. Index

Strategies:             Asset Allocation Management                         
                        Fixed Income Management and Asset Allocation
                        Maturity and Duration Management                       
                        Value Investing           
                        Foreign Investing
                        Foreign Fixed Income Investing                         
                        Core Equity Investing     
                        International Equity Investing   
                        Emerging Markets Investing                    
                        High Yield Investing      
                        Mortgage Investing           

Portfolio
Management Team:        Thomas L. Bennett, J. David Germany, Gary G. Schlarbaum,
                        Horacio A, Valeiras and Richard B. Worley
    


- --------------------------------------------------------------------------------
MAS Fund - 38          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

                              PROSPECTUS GLOSSARY

            CHARACTERISTICS AND RISKS OF STRATEGIES AND INVESTMENTS

STRATEGIES

   
Asset Allocation Management: The Adviser's approach to asset allocation
management is to determine investment strategies for each asset class in a
portfolio separately, and then determine the mix of those strategies expected to
maximize the return available from each market. Strategic judgments on the mix
among asset classes are based on valuation disciplines and tools for analysis
which have been developed over the Adviser's twenty-five year history of
managing balanced accounts.

Tactical asset-allocation shifts are based on comparisons of prospective risks,
returns, and the likely risk-reducing benefits derived from combining different
asset classes into a single portfolio. Experienced teams of equity, fixed-
income, and international investment professionals manage the investments in
each asset class.

Core Equity Investing: The Adviser's "core" or primary equity strategy
emphasizes common stocks of large companies, with targeted investments in small
company stocks that promise special growth opportunities. Depending on the
Adviser's outlook for the economy and different market sectors, the mix between
value stocks and growth stocks will change.
    

Emerging Markets Investing: The Adviser's approach to emerging markets investing
is based on the Adviser's evaluation of both short-term and long-term
international economic trends and the relative attractiveness of emerging
markets and individual emerging market securities.

   
As used in this Prospectus, emerging markets describes any country which is
generally considered to be an emerging or developing country by the
international financial community such as the International Bank for
Reconstruction and Development (more commonly known as the World Bank) and the
International Finance Corporation. There are currently over 130 countries which
are generally considered to be emerging or developing countries by the
international financial community, approximately 40 of which currently have
stock markets. Emerging markets can include every nation in the world except the
United States, Canada, Japan, Australia, New Zealand and most nations located in
Western Europe.

Currently, investing in many emerging markets is either not feasible or very
costly, or may involve unacceptable political risks. Other special risks include
the possible increased likelihood of expropriation or the return to power of a
communist regime which would institute policies to expropriate, nationalize or
otherwise confiscate investments. A portfolio will focus its investments on
those emerging market countries in which the Adviser believes the potential for
market appreciation outweighs these risks and the cost of investment. Investing
in emerging markets also involves an extra degree of custodial and/or market
risk, especially where the securities purchased are not traded on an official
exchange or where ownership records regarding the securities are maintained by
an unregulated entity (or even the issuer itself).

Fixed Income Management and Asset Allocation: Within the Special Purpose Fixed
Income, Balanced, Multi-Asset-Class and Balanced Plus Portfolios, the Adviser
selects Fixed-Income Securities not only on the basis of judgments regarding
Maturity and Duration Management and Value Investing, but also on the basis of
the value offered by various segments of the Fixed-Income Securities market
relative to Cash Equivalents and Equity Securities. In this context, the Adviser
may find that certain segments of the Fixed-Income Securities market offer more
or less attractive relative value when compared to Equity Securities than when
compared to other Fixed-Income Securities.

For example, in a given interest rate environment, Equity Securities may be
judged to be fairly valued when compared to intermediate duration Fixed-Income
Securities, but overvalued compared to long dura-
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 39
<PAGE>

   
tion Fixed-Income Securities. Consequently, while a portfolio investing only in
Fixed-Income Securities may not emphasize long duration assets to the same
extent, the fixed-income portion of a balanced investment may invest a
percentage of its assets in long duration bonds on the basis of their valuation
relative to Equity Securities.
    

Foreign Fixed Income Investing: The Adviser invests in Foreign Bonds and other
Fixed-Income Securities denominated in foreign currencies, where, in the opinion
of the Adviser, the combination of current yield and currency value offer
attractive expected returns. When the total return opportunities in a foreign
bond market appear attractive in local currency terms, but where in the
Adviser's judgment unacceptable currency risk exists, currency Futures &
Options, Forwards and Swaps may be used to hedge the currency risk.

Foreign Investing: Investors should recognize that investing in Foreign Bonds
and Foreign Equities involves certain special considerations which are not
typically associated with investing in domestic securities.

   
As non-U.S. companies are not generally subject to uniform accounting, auditing
and financial reporting standards and practices comparable to those applicable
to U.S. companies, there may be less publicly available information about
certain foreign securities than about U.S. securities. Foreign Bonds and Foreign
Equities may be less liquid and more volatile than securities of comparable U.S.
companies. There is generally less government supervision and regulation of
stock exchanges, brokers and listed companies than in the U.S. With respect to
certain foreign countries, there is the possibility of expropriation or
confiscatory taxation, political or social instability, or diplomatic
developments which could affect U.S. investments in those countries.
Additionally, there may be difficulty in obtaining and enforcing judgments
against foreign issuers.

Since Foreign Bonds and Foreign Equities may be denominated in foreign
currencies, and since a portfolio may temporarily hold uninvested reserves in
bank deposits of foreign currencies prior to reinvestment or conversion to U.S.
dollars, a portfolio may be affected favorably or unfavorably by changes in
currency rates and in exchange control regulations, and may incur costs in
connection with conversions between various currencies.

Although a portfolio will endeavor to achieve the most favorable execution costs
in its portfolio transactions in foreign securities, fixed commissions on many
foreign stock exchanges are generally higher than negotiated commissions on U.S.
exchanges. In addition, it is expected that the expenses for custodial
arrangements of a portfolio's foreign securities will be greater than the
expenses for the custodial arrangements for handling U.S. securities of equal
value. Certain foreign governments levy withholding taxes against dividend and
interest income. Although in some countries a portion of these taxes is
recoverable, the non-recovered portion of foreign withholding taxes will reduce
the income a portfolio receives from the companies comprising the portfolio's
investments.

Growth Stock Investing: Seeks to invest in Common Stocks generally characterized
by higher growth rates, betas, and price/earnings ratios, and lower yields than
the stock market in general as measured by the S&P 500 Index.

High Yield Investing: Involves investing in High Yield securities based on the
Adviser's analysis of economic and industry trends and individual security
characteristics. The Adviser conducts credit analysis for each security
considered for investment to evaluate its attractiveness relative to its risk. A
high level of diversification is also maintained to limit credit exposure to
individual issuers.

To the extent a portfolio invests in High Yield securities it will be exposed to
a substantial degree of credit risk. Lower-rated bonds are considered
speculative by traditional investment standards. High Yield securities may be
issued as a consequence of corporate restructuring or similar events. Also, High
Yield securities are often issued by smaller, less credit worthy companies, or
by highly leveraged (indebted) firms, which are generally less able than more
established or less leveraged firms to make scheduled payments of interest and
principal. The risks posed by securities issued under such circumstances are
substantial.

The market for High Yield securities is still relatively new. Because of this, a
long-term track record for bond default rates does not exist. In addition, the
secondary market for high yield securities is generally less liquid than that
for investment grade corporate securities. In periods of reduced market
liquidity, high yield bond prices may become more volatile, and both the high
yield market and a portfolio may experience sudden and substantial price
declines. 
    


- --------------------------------------------------------------------------------
MAS Fund - 40          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
This lower liquidity might have an effect on a portfolio's ability to value or
dispose of such securities. Also, there may be significant disparities in the
prices quoted for high yield securities by various dealers. Under such
conditions, a portfolio may find it difficult to value its securities
accurately. A portfolio may also be forced to sell securities at a significant
loss in order to meet shareholder redemptions. These factors add to the risks
associated with investing in High Yield securities.

High yield bonds may also present risks based on payment expectations. For
example, high yield bonds may contain redemption or call provisions. If an
issuer exercises these provisions in a declining interest rate market, a
portfolio would have to replace the security with a lower yielding security,
resulting in a decreased return for investors.

Certain types of high yield bonds are non-income paying securities. For example,
Zero Coupons pay interest only at maturity and payment-in-kind bonds pay
interest in the form of additional securities. Payment in the form of additional
securities, or interest income recognized through discount accretion, will,
however, be treated as ordinary income which will be distributed to shareholders
even though the portfolio does not receive periodic cash flow from these
investments.

The table below provides a summary of ratings assigned to all U.S. and foreign
debt holdings of those portfolios with more than 5% invested in High Yield
securities as of September 30, 1997 (not including money market instruments).
These figures are dollar-weighted averages of month-end portfolio holdings and
do not necessarily indicate a portfolio's current or future debt holdings.
Portfolios whose debt holdings total less than 100% also invest in Equity
Securities.

         High Yield Portfolio              Multi-Asset-Class Portfolio
         --------------------              ---------------------------
QUALITY                                    QUALITY                      
AAA                          9.06%         AAA                      26.22%
AA                           0.05          AA                        2.32
A                            0.19          A                         1.09
BBB                          6.09          BBB                       2.09
BB                          42.51          BB                        4.64
B                           35.48          B                         6.02
CCC                          0.96          CCC                       0.32
NOT RATED                                  NOT RATED     
  BB                  0.91*                  BB                0.06*
  B                   2.52*                  B                 0.22*
  NR                  2.23                   NR                0.17
  TOTAL NR                   5.66            TOTAL NR                0.45  
TOTAL                      100.00%         TOTAL                    43.18%

* The Adviser believes that these non-rated securities are equivalent in quality
  to the rating indicated.
    

International Equity Investing: The Adviser's approach to international equity
investing is based on its evaluation of both short-term and long-term
international economic trends and the relative attractiveness of non-U.S. equity
markets and individual securities.

   
The Adviser considers fundamental investment characteristics, the principles of
valuation and diversification, and a relatively long-term investment time
horizon. Since liquidity will also be a consideration, emphasis will likely be
influenced by the relative market capitalizations of different non-U.S. stock
markets and individual securities. Portfolios seek to diversify investments
broadly among both developed and newly industrializing foreign countries. Where
appropriate, a portfolio may also invest in regulated Investment Companies or
Investment Funds which invest in such countries to the extent allowed by
applicable law.
    

Maturity and Duration Management: One of two primary components of the Adviser's
fixed-income investment strategy is maturity and duration management. The
maturity and duration structure of a portfolio investing in Fixed-Income
Securities is actively managed in anticipation of cyclical interest rate
changes. Adjustments are not made in an effort to capture short-term, day-to-day
movements in the market, but instead are implemented in anticipation 

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 41

<PAGE>

of longer term shifts in the levels of interest rates. Adjustments made to
shorten portfolio maturity and duration are made to limit capital losses during
periods when interest rates are expected to rise. Conversely, adjustments made
to lengthen maturity are intended to produce capital appreciation in periods
when interest rates are expected to fall. The foundation for maturity and
duration strategy lies in analysis of the U.S. and global economies, focusing on
levels of real interest rates, monetary and fiscal policy actions, and cyclical
indicators. See Value Investing for a description of the second primary
component of the Adviser's fixed-income strategy.

   
About Maturity and Duration: Most debt obligations provide interest (coupon)
payments in addition to a final (par) payment at maturity. Some obligations also
have call provisions. Depending on the relative magnitude of these payments and
the nature of the call provisions, the market values of debt obligations may
respond differently to changes in the level and structure of interest rates.
Traditionally, a debt security's term-to-maturity has been used as a proxy for
the sensitivity of the security's price to changes in interest rates (which is
the interest rate risk or volatility of the security). However, term-to-maturity
measures only the time until a debt security provides its final payment, taking
no account of the pattern of the security's payments prior to maturity.

Duration is a measure of the expected life of a Fixed-Income Security that was
developed as a more precise alternative to the concept of term-to-maturity.
Duration incorporates a bond's yield, coupon interest payments, final maturity
and call features into one measure. Duration is one of the fundamental tools
used by the Adviser in the selection of Fixed-Income Securities. Duration is a
measure of the expected life of a Fixed-Income Security on a present value
basis. Duration takes the length of the time intervals between the present time
and the time that the interest and principal payments are scheduled or, in the
case of a callable bond, expected to be received, and weights them by the
present values of the cash to be received at each future point in time. For any
Fixed-Income Security with interest payments occurring prior to the payment of
principal, duration is always less than maturity. In general, all other factors
being the same, the lower the stated or coupon rate of interest of a
fixed-income security, the longer the duration of the security; conversely, the
higher the stated or coupon rate of interest of a Fixed-Income Security, the
shorter the duration of the security.

There are some situations where even the standard duration calculation does not
properly reflect the interest rate exposure of a security. For example, floating
and variable rate securities often have final maturities of ten or more years;
however, their interest rate exposure corresponds to the frequency of the coupon
reset. Another example where the interest rate exposure is not properly captured
by duration is the case of mortgage pass-through securities. The stated final
maturity of such securities is generally 30 years, but current prepayment rates
are more critical in determining the securities' interest rate exposure. In
these and other similar situations, the Adviser will use sophisticated
analytical techniques that incorporate the economic life of a security into the
determination of its interest rate exposure .

Mortgage Investing: At times it is anticipated that greater than 50% of a
fixed-income portfolio's assets may be invested in mortgage-related securities.
These include Mortgage Securities which represent interests in pools of mortgage
loans made by lenders such as commercial banks, savings and loan associations,
mortgage bankers and others. The pools are assembled by various organizations,
including the Government National Mortgage Association 
    


- --------------------------------------------------------------------------------
MAS Fund - 42          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
(GNMA), Federal Home Loan Mortgage Corporation (FHLMC), Fannie Mae, other
government agencies, and private issuers. It is expected that a portfolio's
primary emphasis will be in Mortgage Securities issued by the various
government-related organizations. However, a portfolio may invest, without
limit, in Mortgage Securities issued by private issuers when the Adviser deems
that the quality of the investment, the quality of the issuer, and market
conditions warrant such investments. Securities issued by private issuers will
be rated investment grade by Moody's or Standard & Poor's or be deemed by the
Adviser to be of comparable investment qualtity.

Money Market Investing: A money market fund like the Cash Reserves Portfolio
invests in securities which present minimal credit risk and may not yield as
high a level of current income as securities of lower quality or longer
maturities which generally have less liquidity, greater market risk and more
price fluctuation. A money market portfolio is designed to provide maximum
principal stability for investors seeking to invest funds for the short-term,
or, for investors seeking to combine a long-term investment program in other
portfolios of the Fund with an investment in money market instruments. However,
because the Cash Reserves Portfolio invests in the money market obligations of
private financial and non-financial corporations in addition to those of the
U.S. Government or its agencies and instrumentalities, it offers higher credit
risk and yield potential relative to money market funds which invest exclusively
in U.S. Government securities. The Cash Reserves Portfolio seeks to maintain,
but does not guarantee, a constant net asset value of $1.00 per share.

Municipals Management: The Adviser manages municipal portfolios in a total
return context. This means that Taxable Investments will regularly be included
in a portfolio when they have an attractive prospective after-tax total return,
regardless of the taxable nature of income on the security.

Municipals Management emphasizes a diversified portfolio of high grade municipal
debt securities. Under normal circumstances, a portfolio will invest at least
80% of net assets in municipal securities including AMT Bonds and at least 80%
will be Investment Grade Securities.
    

Under normal conditions, a portfolio may hold up to 20% of net assets in U.S.
Governments, Agencies, Corporates, Cash Equivalents, Preferred Stocks, Mortgage
Securities, Asset-Backeds, Floaters, and Inverse Floaters and other Fixed-Income
Securities (collectively "Taxable Investments").

   
Non-Diversified Status: A portfolio may be classified as a non-diversified
investment company under the 1940 Act. Non-diversified portfolios may invest
more than 25% of assets in securities of individual issuers representing greater
than 5% each of a portfolio's total assets, whereas diversified investment
companies may only invest up to 25% of assets in positions of greater than 5%.
Both diversified and non-diversified portfolios are subject to diversification
specifications under the Internal Revenue Code of 1986, as amended, which
require that, as of the close of each fiscal quarter, (i) no more than 25% of a
portfolio's total assets may be invested in the securities of a single issuer
(except for U.S. Government securities) and (ii) with respect to 50% of its
total assets, no more than 5% of such assets may be invested in the securities
of a single issuer (except for U.S. Government securities) or invested in more
than 10% of the outstanding voting securities of a single issuer. Because of its
non-diversified status, a portfolio may be subject to greater credit and other
risks than a diversified investment company.

Value Investing: One of two primary components of the Adviser's fixed-income
strategy is value investing, whereby the Adviser seeks to identify undervalued
sectors and securities through analysis of credit quality, option
characteristics and liquidity. Quantitative models are used in conjunction with
judgment and experience to evaluate and select securities with embedded put or
call options which are attractive on a risk- and option-adjusted basis.
Successful value investing will permit a portfolio to benefit from the price
appreciation of individual securities during periods when interest rates are
unchanged. See Maturity and Duration Management for a description of the other
key component of the Adviser's fixed-income investment strategy.

Value Stock Investing: Emphasizes Common Stocks which are deemed by the Adviser
to be undervalued relative to the stock market in general as measured by the
appropriate market index, based on value measures such as price/earnings ratios
and price/book ratios. Value stocks are generally dividend paying Common Stocks.
However, non-dividend paying stocks may also be selected for their value
characteristics.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 43
<PAGE>

INVESTMENTS

   
Each portfolio may invest in the securities defined below in accordance with
their listing of Allowable Investments and any quality or policy constraints.
    

ADRs-American Depository Receipts: are dollar-denominated securities which are
listed and traded in the United States, but which represent claims to shares of
foreign stocks. ADRs may be either sponsored or unsponsored. Unsponsored ADR
facilities typically provide less information to ADR holders. ADRs also include
American Depository Shares.

Agencies: are securities which are not guaranteed by the U.S. Government, but
which are issued, sponsored or guaranteed by a federal agency or federally
sponsored agency such as the Student Loan Marketing Association or any of
several other agencies.

Asset-Backeds: are securities collateralized by shorter term loans such as
automobile loans, home equity loans, computer leases, or credit card
receivables. The payments from the collateral are passed through to the security
holder. The collateral behind asset-backed securities tends to have prepayment
rates that do not vary with interest rates. In addition the short-term nature of
the loans reduces the impact of any change in prepayment level. Due to
amortization, the average life for these securities is also the conventional
proxy for maturity.

Possible Risks: Due to the possibility that prepayments (on automobile loans and
other collateral) will alter the cash flow on asset-backed securities, it is not
possible to determine in advance the actual final maturity date or average life.
Faster prepayment will shorten the average life and slower prepayments will
lengthen it. However, it is possible to determine what the range of that
movement could be and to calculate the effect that it will have on the price of
the security. In selecting these securities, the Adviser will look for those
securities that offer a higher yield to compensate for any variation in average
maturity.

   
Brady Bonds: are debt obligations which are created through the exchange of
existing commercial bank loans to foreign entities for new obligations in
connection with debt restructuring under a plan introduced by former U.S.
Secretary of the Treasury, Nicholas F. Brady (the Brady Plan). Brady Bonds have
been issued fairly recently, and, accordingly, do not have a long payment
history. They may be collateralized or uncollateralized and issued in various
currencies (although most are dollar-denominated) and they are actively traded
in the over-the-counter secondary market. For further information on these
securities, see the Statement of Additional Information. Portfolios will only
invest in Brady Bonds consistent with quality specifications.
    

Cash Equivalents: are short-term fixed-income instruments comprising:

(1) Time deposits, certificates of deposit (including marketable variable rate
certificates of deposit) and bankers' acceptances issued by a commercial bank or
savings and loan association. Time deposits are non-negotiable deposits
maintained in a banking institution for a specified period of time at a stated
interest rate. Certificates of deposit are negotiable short-term obligations
issued by commercial banks or savings and loan associations against funds
deposited in the issuing institution. Variable rate certificates of deposit are
certificates of deposit on which the interest rate is periodically adjusted
prior to their stated maturity based upon a specified market rate. A bankers'
acceptance is a time draft drawn on a commercial bank by a borrower usually in
connection with an international commercial transaction (to finance the import,
export, transfer or storage of goods).

   
Each portfolio may invest in obligations of U.S. banks, and, except for the
Domestic Fixed Income Portfolio, in foreign branches of U.S. banks (Eurodollars)
and U.S. branches of foreign banks (Yankee dollars). Euro and Yankee dollar
investments will involve some of the same risks of investing in international
securities that are discussed in the Foreign Investing section of this
Prospectus.

The portfolios will not invest in any security issued by a commercial bank
unless (i) the bank has total assets 
    


- --------------------------------------------------------------------------------
MAS Fund - 44          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

of at least $1 billion, or the equivalent in other currencies, or, in the case
of domestic banks which do not have total assets of at least $1 billion, the
aggregate investment made in any one such bank is limited to $100,000 and the
principal amount of such investment is insured in full by the Federal Deposit
Insurance Corporation, (ii) in the case of U.S. banks, it is a member of the
Federal Deposit Insurance Corporation, and (iii) in the case of foreign branches
of U.S. banks, the security is deemed by the Adviser to be of an investment
quality comparable with other debt securities which may be purchased by the
portfolio.

   
(2) Each portfolio (except the Cash Reserves Portfolio) may invest in commercial
paper rated at time of purchase by one or more Nationally Recognized Statistical
Rating Organizations ("NRSRO") in one of their two highest categories, (e.g.,
A-l or A-2 by Standard & Poor's or Prime 1 or Prime 2 by Moody's), or, if not
rated, issued by a corporation having an outstanding unsecured debt issue rated
high-grade by a NRSRO (e.g. A or better by Moody's, Standard & Poor's or Fitch).
The Cash Reserves Portfolio invests only in commercial paper rated in the
highest category;
    

(3) Short-term corporate obligations rated high-grade at the time of purchase by
a NRSRO (e.g. A or better by Moody's, Standard & Poor's or Fitch);

(4) U.S. Government obligations including bills, notes, bonds and other debt
securities issued by the U.S. Treasury. These are direct obligations of the U.S.
Government and differ mainly in interest rates, maturities and dates of issue;

(5) Government Agency securities issued or guaranteed by U.S. Government
sponsored instrumentalities and Federal agencies. These include securities
issued by the Federal Home Loan Banks, Federal Land Bank, Farmers Home
Administration, Farm Credit Banks, Federal Intermediate Credit Bank, Fannie Mae,
Federal Financing Bank, the Tennessee Valley Authority, and others;

   
(6) Repurchase Agreements collateralized by securities listed above; and
    

(7) Investments by the Cash Reserves Portfolio in Cash Equivalents are limited
by the quality, maturity and diversification requirements adopted under Rule
2a-7 of the 1940 Act.

CMOs-Collateralized Mortgage Obligations: are Derivatives which are
collateralized by mortgage pass-through securities. Cash flows from the mortgage
pass-through securities are allocated to various tranches (a "tranche" is
essentially a separate security) in a predetermined, specified order. Each
tranche has a stated maturity - the latest date by which the tranche can be
completely repaid, assuming no prepayments - and has an average life - the
average of the time to receipt of a principal payment weighted by the size of
the principal payment. The average life is typically used as a proxy for
maturity because the debt is amortized (repaid a portion at a time), rather than
being paid off entirely at maturity, as would be the case in a straight debt
instrument.

   
Possible Risks: Due to the possibility that prepayments (on home mortgages and
other collateral) will alter the cash flow on CMOs, it is not possible to
determine in advance the actual final maturity date or average life. Faster
prepayment will shorten the average life and slower prepayments will lengthen
it. However, it is possible to determine what the range of that movement could
be and to calculate the effect that it will have on the price of the security.
In selecting these securities, the Adviser will look for those securities that
offer a higher yield to compensate for any variation in average maturity.

Like bonds in general, Mortgage Securities will generally decline in price when
interest rates rise. Rising interest rates also tend to discourage refinancings
of home mortgages with the result that the average life of Mortgage Securities
held by a portfolio may be lengthened. This extension of average life causes the
market price of the securities to decrease further than if their average lives
were fixed. In part to compensate for these risks, mortgages will generally
offer higher yields than comparable bonds. However, when interest rates fall,
mortgages may not enjoy as large a gain in market value due to prepayment risk
because additional mortgage prepayments must be reinvested at lower interest
rates.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 45
<PAGE>

   
Commercial Paper: is a term used to desribe short-term obligations with
maturities ranging from 2 to 270 days. These obligations are primarily issued by
corporations needing to finance large amounts of receivables, but may be issued
by banks and other borrowers. Commercial Paper is issued either directly or
through broker-dealers, and may be discounted or interest-bearing. Commercial
Paper is unsecured, but is almost always backed by bank lines of credit.
Virtually all Commercial Paper is ranked by Moody's or Standard & Poor's.

Common Stocks: are Equity Securities which represent an ownership interest in a
corporation, entitling the shareholder to voting rights and receipt of dividends
paid based on proportionate ownership.

Convertibles: are convertible bonds or shares of convertible Preferred Stock
which may be exchanged for a fixed number of shares of Common Stock at the
purchaser's option.
    

Corporates-Corporate bonds: are debt instruments issued by private corporations.
Bondholders, as creditors, have a prior legal claim over common and preferred
stockholders of the corporation as to both income and assets for the principal
and interest due to the bondholder. A portfolio will buy Corporates subject to
any quality constraints. If a security held by a portfolio is down-graded, the
portfolio may retain the security if the Adviser deems retention of the security
to be in the best interests of the portfolio.

Depositary Receipts: include both Global Depositary Receipts ("GDRs") and
European Depositary Receipts ("EDRs"), in addition to other similar types of
depositary shares, and are securities that can be traded in U.S. or foreign
securities markets but which represent ownership interests in a security or pool
of securities by a foreign or U.S. corporation. Depositary Receipts may be
sponsored or unsponsored. The depositary of unsponsored Depositary Receipts may
provide less information to receipt holders.

   
Derivatives: A financial instrument whose value and performance are based on the
value and performance of another security or financial instrument. The Adviser
will use derivatives only in circumstances where they offer the most economic
means of improving the risk/reward profile of the portfolio. The Adviser will
not use derivatives to increase portfolio risk above the level that could be
achieved in the portfolio using only traditional investment securities. In
addition, the Adviser will not use derivatives to acquire exposure to changes in
the value of assets or indexes of assets that are not listed in the applicable
Allowable Investments for the portfolio. Any applicable limitations are
described under each investment definition. The portfolios may enter into
over-the-counter Derivatives transactions with counterparties approved by the
Adviser in accordance with guidelines established by the Board of Trustees.
These guidelines provide for a minimum credit rating for each counterparty and
various credit enhancement techniques (for example, collateralization of amounts
due from counterparties) to limit exposure to counterparties with ratings below
AA. Derivatives include, but are not limited to, CMOs, Forwards, Futures and
Options, SMBS, Structured Investments, Structured Notes and Swaps. See each
individual portfolio's listing of Allowable Investments to determine which of
these a portfolio may hold.

Eastern European Issuers: The economies of Eastern European countries are
currently suffering both from the stagnation resulting from centralized economic
planning and control and the higher prices and unemployment associated with the
transition to market economics. Unstable economic and political conditions may
adversely affect security values. Upon the accession to power of Communist
regimes during the 1940's, the governments of a number of Eastern European
countries expropriated a large amount of property. The claims of many property
owners against those governments were never finally settled. As a result, there
can be no assurance that the portfolio's investments in Eastern Europe would not
be expropriated, nationalized or otherwise confiscated.
    


- --------------------------------------------------------------------------------
MAS Fund - 46          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Emerging Markets Issuers: An emerging market security is one issued by a company
that has one or more of the following characteristics: (i) its principal
securities trading market is in an emerging market, (ii) alone or on a
consolidated basis it derives 50% or more of its annual revenue from either
goods produced, sales made or services performed in emerging markets, or (iii)
it is organized under the laws of, and has a principal office in, an emerging
market country. The Adviser will base determinations as to eligibility on
publicly available information and inquiries made to the companies. Investing in
emerging markets may entail purchasing securities issued by or on behalf of
entities that are insolvent, bankrupt, in default or otherwise engaged in an
attempt to reorganize or reschedule their obligations, and in entities that have
little or no proven credit rating or credit history. In any such case, the
issuer's poor or deteriorating financial condition may increase the likelihood
that the investing fund will experience losses or diminution in available gains
due to bankruptcy, insolvency or fraud.

Equity Securities: Commonly include but are not limited to Common Stock,
Preferred Stock, ADRs, Rights, Warrants, Convertibles, and Foreign Equities. See
each individual portfolio's listing of Allowable Investments to determine which
of these a portfolio may hold. Preferred Stock is contained in both the
definition of Equity Securities and Fixed-Income Securities since it exhibits
characteristics commonly associated with each type.

Fixed-Income Securities: Commonly include but are not limited to U.S.
Governments, Zero Coupons, Agencies, Corporates, High Yield, Mortgage
Securities, SMBS, CMOs, Asset-Backeds, Convertibles, Brady Bonds, Floaters,
Inverse Floaters, Cash Equivalents, Repurchase Agreements, Preferred Stock, and
Foreign Bonds. See each individual portfolio's listing of Allowable Investments
to determine which of these a portfolio may hold. Preferred Stock is contained
in both the definition of Equity Securities and Fixed-Income Securities since it
exhibits characteristics commonly associated with each type of security.
    

Floaters-Floating and Variable Rate Obligations: are debt obligations with a
floating or variable rate of interest, i.e. the rate of interest varies with
changes in specified market rates or indices, such as the prime rate, or at
specified intervals. Certain floating or variable rate obligations may carry a
demand feature that permits the holder to tender them back to the issuer of the
underlying instrument, or to a third party, at par value prior to maturity. When
the demand feature of certain floating or variable rate obligations represents
an obligation of a foreign entity, the demand feature will be subject to certain
risks discussed under Foreign Investing.

   
Foreign Bonds: are Fixed Income Securities denominated in foreign currency and
issued and traded primarily outside of the U.S., including: (1) obligations
issued or guaranteed by foreign national governments, their agencies,
instrumentalities, or political subdivisions; (2) debt securities issued,
guaranteed or sponsored by supranational organizations established or supported
by several national governments, including the World Bank, the European
Community, the Asian Development Bank and others; (3) non-government foreign
corporate debt securities; and (4) foreign Mortgage Securities and various other
mortgages and asset-backed securities.

Foreign Currency: Portfolios investing in foreign securities will regularly
transact security purchases and sales in foreign currencies. These portfolios
may hold foreign currency or purchase or sell currencies on a forward basis (see
Forwards)

Foreign Equities: are Common Stock, Preferred Stock, Rights and Warrants of
foreign issuers denominated in foreign currency and traded primarily in non-U.S.
markets. Foreign Equities also include Depositary Receipts. Investing in foreign
companies involves certain special considerations which are not typically
associated with investing in U.S. companies (see Foreign Investing).

Forwards-Forward Foreign Currency Exchange Contracts: are Derivatives which are
used to protect against uncertainty in the level of future foreign exchange
rates. A forward foreign currency exchange contract is an obligation to purchase
or sell a specific currency at a future date, which may be any fixed number of
days from the date of the contract agreed upon by the parties, at a price set at
the time of the contract. Such contracts do not eliminate fluctuations caused by
changes in the local currency prices of the securities, but rather, they
establish an exchange rate at a future date. Also, although such contracts can
minimize the risk of loss due to a decline in the value of the hedged currency,
at the same time they limit any potential gain that might be realized.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 47
<PAGE>

   
A portfolio may use currency exchange contracts in the normal course of business
to lock in an exchange rate in connection with purchases and sales of securities
denominated in foreign currencies (transaction hedge) or to lock in the U.S.
dollar value of portfolio positions (position hedge). In addition, the
portfolios may cross hedge currencies by entering into a transaction to purchase
or sell one or more currencies that are expected to decline in value relative to
other currencies to which a portfolio has or expects to have portfolio exposure.
Portfolios may also engage in proxy hedging which is defined as entering into
positions in one currency to hedge investments denominated in another currency,
where the two currencies are economically linked. A portfolio's entry into
forward contracts, as well as any use of cross or proxy hedging techniques will
generally require the portfolio to hold liquid securities or cash equal to the
portfolio's obligations in a segregated account throughout the duration of the
contract.

A portfolio may also combine forward contracts with investments in securities
denominated in other currencies in order to achieve desired credit and currency
exposures. Such combinations are generally referred to as synthetic securities.
For example, in lieu of purchasing a foreign bond, a portfolio may purchase a
U.S. dollar-denominated security and at the same time enter into a forward
contract to exchange U.S. dollars for the contract's underlying currency at a
future date. By matching the amount of U.S. dollars to be exchanged with the
anticipated value of the U.S. dollar-denominated security, a portfolio may be
able to lock in the foreign currency value of the security and adopt a synthetic
investment position reflecting the credit quality of the U.S.
dollar-denominated security.

There is a risk in adopting a transaction hedge or position hedge to the extent
that the value of a security denominated in foreign currency is not exactly
matched with a portfolio's obligation under the forward contract. On the date of
maturity, a portfolio may be exposed to some risk of loss from fluctuations in
that currency. Although the Adviser will attempt to hold such mismatching to a
minimum, there can be no assurance that the Adviser will be able to do so. For
proxy hedges, cross hedges or a synthetic position, there is an additional risk
in that these transactions create residual foreign currency exposure. When a
portfolio enters into a forward contract for purposes of creating a position
hedge, transaction hedge, cross hedge or a synthetic security, it will generally
be required to hold liquid securities or cash in a segregated account with a
daily value at least equal to its obligation under the forward contract.

Futures & Options-Futures Contracts, Options on Futures Contracts and Options:
are Derivatives. Futures contracts provide for the sale by one party and
purchase by another party of a specified amount of a specific security, at a
specified future time and price. An option is a legal contract that gives the
holder the right to buy or sell a specified amount of the underlying security or
futures contract at a fixed or determinable price upon the exercise of the
option. A call option conveys the right to buy and a put option conveys the
right to sell a specified quantity of the underlying security.

A portfolio will not enter into futures contracts to the extent that its
outstanding obligations to purchase securities under these contracts in
combination with its outstanding obligations with respect to options
transactions would exceed 50% of its total assets. It will maintain assets
sufficient to meet its obligations under such contracts in a segregated account
with the custodian bank or will otherwise comply with the Securities and
Exchange Commission's ("SEC's") position on asset coverage.

Possible Risks: The primary risks associated with the use of Futures and Options
are (i) imperfect correlation between the change in market value of the
securities held by a portfolio and the prices of futures and options relating to
the stocks, bonds or futures contracts purchased or sold by a portfolio; and
(ii) possible lack of a liquid secondary market for a futures contract and the
resulting inability to close a futures position which could have an adverse
impact on a portfolio's ability to execute futures and options strategies.
Additional risks associated with options transactions are (i) the risk that an
option will expire worthless; (ii) the risk that the issuer of an over-the-
counter option will be unable to fulfill its obligation to the portfolio due to
bankruptcy or related circumstances; (iii) the risk that options may exhibit
greater short-term price volatility than the underlying security; and (iv) the
risk that a portfolio may be forced to forego participation in the appreciation
of the value of underlying securities, futures contracts or currency due to the
writing of a call option.
    


- --------------------------------------------------------------------------------
MAS Fund - 48          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
High Yield: High yield securities are generally considered to be Corporates,
Preferred Stocks, and Convertibles rated Ba through C by Moody's or BB through D
by Standard & Poor's, and unrated securities considered to be of equivalent
quality. Securities rated less than Baa by Moody's or BBB by Standard & Poor's
are classified as non-investment grade securities and are commonly referred to
as junk bonds or high yield, high risk securities. Such securities carry a high
degree of risk and are considered speculative by the major credit rating
agencies. The following are excerpts from the Moody's and Standard & Poor's
definitions for speculative-grade debt obligations:

      Moody's: Ba-rated bonds have "speculative elements" so their future
      "cannot be considered assured," and protection of principal and interest
      is "moderate" and "not well safeguarded during both good and bad times in
      the future." B-rated bonds "lack characteristics of a desirable
      investment" and the assurance of interest or principal payments "may be
      small." Caa-rated bonds are "of poor standing" and "may be in default" or
      may have "elements of danger with respect to principal or interest."
      Ca-rated bonds represent obligations which are speculative in a high
      degree. Such issues are often in default or have other marked
      shortcomings. C-rated bonds are the "lowest rated" class of bonds, and
      issues so rated can be regarded as having "extremely poor prospects" of
      ever attaining any real investment standing.

      Standard & Poor's: BB-rated bonds have "less near-term vulnerability to
      default" than B- or CCC-rated securities but face "major ongoing
      uncertainties . . . which may lead to inadequate capacity" to pay interest
      or principal. B-rated bonds have a "greater vulnerability to default than
      BB-rated bonds and the ability to pay interest or principal will likely be
      impaired by adverse business conditions." CCC-rated bonds have a currently
      identifiable "vulnerability to default" and, without favorable business
      conditions, will be "unable to repay interest and principal." The rating C
      is reserved for income bonds on which "no interest is being paid." Debt
      rated D is in "default", and "payment of interest and/or repayment of
      principal is in arrears."

While these securities offer High Yields, they also normally carry with them a
greater degree of risk than securities with higher ratings. Lower-rated bonds
are considered speculative by traditional investment standards. High yield
securities may be issued as a consequence of corporate restructuring or similar
events. Also, high yield securities are often issued by smaller, less credit
worthy companies, or by highly leveraged (indebted) firms, which are generally
less able than more established or less leveraged firms to make scheduled
payments of interest and principal. The price movement of these securities is
influenced less by changes in interest rates and more by the financial and
business position of the issuing corporation when compared to investment grade
bonds.

The risks posed by securities issued under such circumstances are substantial.
If a security held by a portfolio is down-graded, the portfolio may retain the
security.

Inverse Floaters-Inverse Floating Rate Obligations: are Fixed-Income Securities,
which have coupon rates that vary inversely at a multiple of a designated
floating rate, such as LIBOR (London Inter-Bank Offered Rate). Any rise in the
reference rate of an Inverse Floater (as a consequence of an increase in
interest rates) causes a drop in the coupon rate while any drop in the reference
rate of an Inverse Floater causes an increase in the coupon rate. Inverse
Floaters may exhibit substantially greater price volatility than fixed rate
obligations having similar credit quality, redemption provisions and maturity,
and Inverse Floater CMOs exhibit greater price volatility than the majority of
mortgage pass-through securities or CMOs. In addition, some Inverse Floater CMOs
exhibit extreme sensitivity to changes in prepayments. As a result, the yield to
maturity of an Inverse Floater CMO is sensitive not only to changes in interest
rates but also to changes in prepayment rates on the related underlying mortgage
assets.

Investment Companies: The portfolios are permitted to invest in shares of other
open-end or closed-end investment companies. The 1940 Act generally prohibits
the portfolios from acquiring more than 3% of the outstanding voting shares of
an investment company and limits such investments to no more than 5% of the
portfolio's total assets in any one investment company and no more than 10% in
any combination of investment companies. The 1940 Act also prohibits the
portfolios from acquiring in the aggregate more than 10% of the outstanding
voting shares of any registered closed-end investment company.

To the extent a portfolio invests a portion of its assets in Investment
Companies, those assets will be subject to the expenses of the investment
company as well as to the expenses of the portfolio itself. The portfolios may
not purchase shares of any affiliated investment company except as permitted by
SEC rule or order.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 49
<PAGE>

   
Investment Funds: Some emerging market countries have laws and regulations that
currently preclude or limit direct foreign investment in the securities of their
companies. However, indirect foreign investment in the securities of companies
listed and traded on the stock exchanges in these countries is permitted by
certain emerging market countries through investment funds. Portfolios that may
invest in these Investment Funds are subject to applicable law as discussed
under Investment Restrictions and will invest in such Investment Funds only
where appropriate given that the portfolio's shareholders will bear indirectly
the layer of expenses of the underlying investment funds in addition to their
proportionate share of the expenses of the portfolio. Under certain
circumstances, an investment in an investment fund will be subject to the
additional limitations that apply to investments in Investment Companies.

Investment Grade Securities: are those (a) rated by one or more nationally
recognized statistical rating organization (NRSRO) in one of the four highest
rating categories at the time of purchase (e.g. AAA, AA, A or BBB by Standard &
Poor's Corporation (Standard & Poor's) or Fitch Investors Service, Inc., (Fitch)
or Aaa, Aa, A or Baa by Moody's Investors Service, Inc. (Moody's));
(b) guaranteed by the U.S. Government or a private organization; or (c)
considered by the Adviser to be investment grade quality. Securities rated BBB
or Baa represent the lowest of four levels of Investment Grade Securities and
are regarded as borderline between definitely sound obligations and those in
which the speculative element begins to predominate. Mortgage Securities,
including mortgage pass-throughs and CMOs, deemed investment grade by the
Adviser, will either carry a guarantee from an agency of the U.S. Government or
a private issuer of the timely payment of principal and interest (such
guarantees do not extend to the market value of such securities or the net asset
value per share of the portfolio) or, in the case of unrated securities, be
sufficiently seasoned that they are considered by the Adviser to be investment
grade quality. The Adviser may retain securities if their ratings fall below
investment grade if it deems retention of the security to be in the best
interests of the portfolio. Any portfolio permitted to hold Investment Grade
Securities may hold unrated securities if the Adviser considers the risks
involved in owning that security to be equivalent to the risks involved in
holding an Investment Grade Security.

Loan Participations: are loans or other direct debt instruments which are
interests in amounts owed by a corporate, governmental or other borrower to
another party. They may represent amounts owed to lenders or lending syndicates,
to suppliers of goods or services (trade claims or other receivables), or to
other parties. Direct debt instruments involve the risk of loss in case of
default or insolvency of the borrower. Direct debt instruments may offer less
legal protection to the portfolio in the event of fraud or misrepresentation. In
addition, loan participations involve a risk of insolvency of the lending bank
or other financial intermediary. Direct debt instruments may also include
standby financing commitments that obligate the investing portfolio to supply
additional cash to the borrower on demand. Loan participations involving
Emerging Market Issuers may relate to loans as to which there has been or
currently exists an event of default or other failure to make payment when due,
and may represent amounts owed to financial institutions that are themselves
subject to political and economic risks, including the risk of currency
devaluation, expropriation, or failure. Such loan participations present
additional risks of default or loss.

Mortgage Securities-Mortgage-backed securities represent an ownership interest
in a pool of residential and commercial mortgage loans. Generally, these
securities are designed to provide monthly payments of interest and principal to
the investor. The mortgagee's monthly payments to his/her lending institution
are passed through to investors such as the portfolio. Most issuers or poolers
provide guarantees of payments, regardless of whether the mortgagor actually
makes the payment. The guarantees made by issuers or poolers are supported by
various forms of credit, collateral, guarantees or insurance, including
individual loan, title, pool and hazard insurance purchased by the issuer. The
pools are assembled by various governmental, government-related and private
organizations. Portfolios may invest in securities issued or guaranteed by the
Government National Mortgage Association (GNMA), Federal Home Loan Mortgage
Corporation (FHLMC), Fannie Mae, private issuers and other government agencies.
There can be no assurance that the private insurers can meet their obligations
under the policies. Mortgage Securities issued by non-agency issuers, whether or
not such securities are subject to guarantees, may entail greater risk. If there
is no guarantee provided by the issuer, mortgage-backed securities purchased by
the portfolio will be those which at time of purchase are rated investment grade
by one or more NRSRO, or, if unrated, are deemed by the Adviser to be of
investment grade quality.

There are two methods of trading Mortgage Securities. A specified pool
transaction is a trade in which the pool number of the security to be delivered
on the settlement date is known at the time the trade is made. This is in
contrast with the typical Mortgage Security transaction, called a TBA (to be
announced) transaction, in which the type of Mortgage Securities to be delivered
is specified at the time of trade but the actual pool numbers of the securities
that will be delivered are not known at the time of the trade. The pool numbers
of the pools to be delivered at settlement 
    


- --------------------------------------------------------------------------------
MAS Fund - 50          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
will be announced shortly before settlement takes place. The terms of the TBA
trade may be made more specific if desired. Generally, agency pass-through
Mortgage Securities are traded on a TBA basis.

A mortgage-backed bond is a collateralized debt security issued by a thrift or
financial institution. The bondholder has a first priority perfected security
interest in collateral, usually consisting of agency mortgage pass-through
securities, although other assets, including U.S. Treasuries (including Zero
Coupon U.S. Treasuries), agencies, cash equivalent securities, whole loans and
corporate bonds, may qualify. The amount of collateral must be continuously
maintained at levels from 115% to 150% of the principal amount of the bonds
issued, depending on the specific issue structure and collateral type.

Possible Risks: Due to the possibility that prepayments on home mortgages will
alter cash flow on Mortgage Securities, it is not possible to determine in
advance the actual final maturity date or average life. Like bonds in general,
mortgage-backed securities will generally decline in price when interest rates
rise. Rising interest rates also tend to discourage refinancings of home
mortgages, with the result that the average life of Mortgage Securities held by
a portfolio may be lengthened. This extension of average life causes the market
price of the securities to decrease further than if their average lives were
fixed. However, when interest rates fall, mortgages may not enjoy as large a
gain in market value due to prepayment risk because additional mortgage
prepayments must be reinvested at lower interest rates. Faster prepayment will
shorten the average life and slower prepayments will lengthen it. However, it is
possible to determine what the range of that movement could be and to calculate
the effect that it will have on the price of the security. In selecting these
securities, the Adviser will look for those securities that offer a higher yield
to compensate for any variation in average maturity.

Municipals-Municipal Securities: are debt obligations issued by local, state and
regional governments that provide interest income which is exempt from federal
income taxes. Municipals include both municipal bonds (those securities with
maturities of five years or more) and municipal notes (those with maturities of
less than five years). Municipal bonds are issued for a wide variety of reasons:
to construct public facilities, such as airports, highways, bridges, schools,
hospitals, mass transportation, streets, water and sewer works; to obtain funds
for operating expenses; to refund outstanding municipal obligations; and to loan
funds to various public institutions and facilities. Certain industrial
development bonds are also considered municipal bonds if their interest is
exempt from federal income tax. Industrial development bonds are issued by or on
behalf of public authorities to obtain funds for various privately-operated
manufacturing facilities, housing, sports arenas, convention centers, airports,
mass transportation systems and water, gas or sewage works. Industrial
development bonds are ordinarily dependent on the credit quality of a private
user, not the public issuer.

General obligation municipal bonds are secured by the issuer's pledge of full
faith, credit and taxing power. Revenue or special tax bonds are payable from
the revenues derived from a particular facility or, in some cases, from a
special excise or other tax, but not from general tax revenue.

Municipal notes are issued to meet the short-term funding requirements of local,
regional and state governments. Municipal notes include bond anticipation notes,
revenue anticipation notes and tax and revenue anticipation notes. These are
short-term debt obligations issued by state and local governments to aid cash
flows while waiting for taxes or revenue to be collected, at which time the debt
is retired. Other types of municipal notes in which the portfolio may invest are
construction loan notes, short-term discount notes, tax-exempt commercial paper,
demand notes, and similar instruments. Demand notes permit an investor (such as
the portfolio) to demand from the issuer payment of principal plus accrued
interest upon a specified number of days' notice. The portfolios eligible to
purchase municipal bonds may also purchase AMT bonds. AMT bonds are tax-exempt
private activity bonds issued after August 7, 1986, the proceeds of which are
directed, at least in part, to private, for-profit organizations. While the
income from AMT bonds is exempt from regular federal income tax, it is a tax
preference item in the calculation of the alternative minimum tax. The
alternative minimum tax is a special separate tax that applies to a limited
number of taxpayers who have certain adjustments to income or tax preference
items.

PA Municipals: are obligations of the Pennsylvania state government, state
agencies and various local governments, including counties, cities, townships,
special districts and authorities. In general, the credit quality and credit
risk of any issuer's debt is contingent upon the state and local economy, the
health of the issuer's finances, the amount of the issuer's debt, the quality of
management and the strength of legal provisions in the debt document that
protect debt holders. Credit risk is usually lower wherever the economy is
strong, growing and diversified, where financial operations are sound and the
debt burden is reasonable. 
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 51
<PAGE>

   
Concentration of investment in the securities of one state exposes a portfolio
to greater credit risks than would be present in a nationally diversified
portfolio of municipal securities. The risks associated with investment in the
securities of a single state include possible tax changes or a deterioration in
economic conditions and differing levels of supply and demand for the municipal
obligations of that state.
    

Debt of Government Agencies, Authorities and Commissions: Certain state-created
agencies have statutory authorization to incur debt for which legislation
providing for state appropriations to pay debt service thereon is not required.
The debt of these agencies is supported by assets of, or revenues derived from,
the various projects financed; it is not an obligation of the Commonwealth. Some
of these agencies, however, such as the Delaware River Joint Toll Bridge
Commission, are indirectly dependent on Commonwealth funds through various
state-assisted programs.

   
Preferred Stock: are non-voting ownership shares in a corporation which pay a
fixed or variable stream of dividends.
    

Repurchase Agreements: are transactions by which a portfolio purchases a
security and simultaneously commits to resell that security to the seller (a
bank or securities dealer) at an agreed upon price on an agreed upon date
(usually within seven days 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 date of maturity of the purchased security. Such agreements
permit the portfolio to keep all its assets at work while retaining overnight
flexibility in pursuit of investments of a longer term nature. The Adviser will
continually monitor the value of the underlying collateral to ensure that its
value, including accrued interest, always equals or exceeds the repurchase
price.

   
Pursuant to an order issued by the SEC, the Fund's portfolios may pool their
daily uninvested cash balances in order to invest in Repurchase Agreements on a
joint basis. By entering into Repurchase Agreements on a joint basis, it is
expected that the portfolios will incur lower transaction costs and potentially
obtain higher rates of interest on such Repurchase Agreements. Each portfolio's
participation in the income from jointly purchased Repurchase Agreements will be
based on that portfolio's percentage share in the total Repurchase Agreement.
    

Rights: represent a preemptive right of stockholders to purchase additional
shares of a stock at the time of a new issuance, before the stock is offered to
the general public, allowing the stockholder to retain the same ownership
percentage after the new stock offering.

SMBS-Stripped Mortgage-Backed Securities: are Derivatives in the form of
multi-class mortgage securities. SMBS may be issued by agencies or
instrumentalities of the U.S. Government and private originators of, or
investors in, mortgage loans, including savings and loan associations, mortgage
banks, commercial banks, investment banks and special purpose entities of the
foregoing.

SMBS are usually structured with two classes that receive different proportions
of the interest and principal distributions on a pool of mortgage assets. One
type of SMBS will have one class receiving some of the interest and most of the
principal from the mortgage assets, while the other class will receive most of
the interest and the remainder of the principal. In some cases, one class will
receive all of the interest (the interest-only or IO class), while the other
class will receive all of the principal (the principal-only or PO class). The
yield to maturity on IOs and POs is extremely sensitive to the rate of principal
payments (including prepayments) on the related underlying mortgage assets, and
a rapid rate of principal payments may have a material adverse effect on a
portfolio yield to maturity. If the underlying mortgage assets experience
greater than anticipated prepayments of principal, a portfolio may fail to fully
recoup its initial investment in these securities, even if the security is in
one of the highest rating categories.

Although SMBS are purchased and sold by institutional investors through several
investment banking firms acting as brokers or dealers, these securities were
only recently developed. As a result, established trading markets have not yet
developed and, accordingly, certain of these securities may be deemed illiquid
and subject to a portfolio's limitations on investment in illiquid securities.

   
Structured Investments: are Derivatives in the form of a unit or units
representing an undivided interest(s) in assets held in a trust that is not an
investment company as defined in the 1940 Act. A trust unit pays a return based
on the 
    


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MAS Fund - 52          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
total return of securities and other investments held by the trust and the trust
may enter into one or more Swaps to achieve its objective. For example, a trust
may purchase a basket of securities and agree to exchange the return generated
by those securities for the return generated by another basket or index of
securities. A portfolio will purchase Structured Investments in trusts that
engage in such Swaps only where the counterparties are approved by the Adviser
in accordance with credit-risk guidelines established by the Board of Trustees.
    

Structured Notes: are Derivatives on which the amount of principal repayment and
or interest payments is based upon the movement of one or more factors. These
factors include, but are not limited to, currency exchange rates, interest rates
(such as the prime lending rate and LIBOR) and stock indices such as the S&P 500
Index. In some cases, the impact of the movements of these factors may increase
or decrease through the use of multipliers or deflators. The use of Structured
Notes allows a portfolio to tailor its investments to the specific risks and
returns the Adviser wishes to accept while avoiding or reducing certain other
risks.

   
Swaps-Swap Contracts: are Derivatives in the form of a contract or other similar
instrument which is an agreement to exchange the return generated by one
instrument for the return generated by another instrument. The payment streams
are calculated by reference to a specified index and agreed upon notional
amount. The term specified index includes, but is not limited to, currencies,
fixed interest rates, prices and total return on interest rate indices,
fixed-income indices, stock indices and commodity indices (as well as amounts
derived from arithmetic operations on these indices). For example, a portfolio
may agree to swap the return generated by a fixed-income index for the return
generated by a second fixed-income index. The currency Swaps in which the
portfolios may enter will generally involve an agreement to pay interest streams
in one currency based on a specified index in exchange for receiving interest
streams denominated in another currency. Such Swaps may involve initial and
final exchanges that correspond to the agreed upon notional amount.

A portfolio will usually enter into Swaps on a net basis, i.e., the two return
streams are netted out in a cash settlement on the payment date or dates
specified in the instrument, with a portfolio receiving or paying, as the case
may be, only the net amount of the two returns. A portfolio's obligations under
a swap agreement will be accrued daily (offset against any amounts owing to the
portfolio) and any accrued but unpaid net amounts owed to a swap counterparty
will be covered by the maintenance of a segregated account consisting of cash or
liquid securities. A portfolio will not enter into any swap agreement unless the
counterparty meets the rating requirements set forth in guidelines established
by the Board of Trustees.

Possible Risks: Interest rate and total rate of return Swaps do not involve the
delivery of securities, other underlying assets, or principal. Accordingly, the
risk of loss with respect to interest rate and total rate of return Swaps is
limited to the net amount of interest payments that a portfolio is contractually
obligated to make. If the other party to an interest rate or total rate of
return swap defaults, a portfolio's risk of loss consists of the net amount of
interest payments that a portfolio is contractually entitled to receive. In
contrast, currency swaps may involve the delivery of the entire principal value
of one designated currency in exchange for the other designated currency.
Therefore, the entire principal value of a currency swap may be subject to the
risk that the other party to the swap will default on its contractual delivery
obligations. If there is a default by the counterparty, a portfolio may have
contractual remedies pursuant to the agreements related to the transaction. The
swap market has grown substantially in recent years with a large number of banks
and investment banking firms acting both as principals and as agents utilizing
standardized swap documentation. As a result, the swap market has become
relatively liquid. Swaps that include caps, floors, and collars are more recent
innovations for which standardized documentation has not yet been fully
developed and, accordingly, they are less liquid than Swaps.

The use of Swaps is a highly specialized activity which involves investment
techniques and risks different from those associated with ordinary portfolio
securities transactions. If the Adviser is incorrect in its forecasts of market
values, interest rates, and currency exchange rates, the investment performance
of the portfolios would be less favorable than it would have been if this
investment technique were not used.
    

Taxable Investments: comprise Fixed-Income Securities and other instruments
which pay income that is not exempt from taxation. Investors may be liable for
tax on the income distributed as a result of the portfolio holding taxable
investments. In this event, shareholders will receive an IRS form 1099
disclosing the taxable income paid for a calendar year. 


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 53
<PAGE>

   
U.S. Governments-U.S. Treasury securities: are Fixed-Income Securities which are
backed by the full faith and credit of the U.S. Government as to the payment of
both principal and interest.
    

Warrants: are options issued by a corporation which give the holder the option
to purchase stock.

When-Issued Securities: are securities purchased at a certain price even though
the securities may not be delivered for up to 90 days. No payment or delivery is
made by a portfolio in a when-issued transaction until the portfolio receives
payment or delivery from the other party to the transaction. Although a
portfolio receives no income from the above described securities prior to
delivery, the market value of such securities is still subject to change. As a
consequence, it is possible that the market price of the securities at the time
of delivery may be higher or lower than the purchase price. A portfolio will
maintain with the custodian a segregated account consisting of cash or liquid
securities in an amount at least equal to these commitments.

   
Yankees: are U.S. dollar-denominated Fixed-Income Securities issued by a foreign
government or corporation and sold in the U.S.

Zero Coupons-Zero Coupon Obligations: are Fixed-Income Securities that do not
make regular interest payments. Instead, zero coupon obligations are sold at
substantial discounts from their face value. The difference between a zero
coupon obligation's issue or purchase price and its face value represents the
imputed interest an investor will earn if the obligation is held until maturity.
Zero Coupons may offer investors the opportunity to earn higher yields than
those available on ordinary interest-paying obligations of similar credit
quality and maturity. However, zero coupon obligation prices may also exhibit
greater price volatility than ordinary Fixed-Income Securities because of the
manner in which their principal and interest are returned to the investor.
    

                        GENERAL SHAREHOLDER INFORMATION

PURCHASE OF SHARES

   
Institutional Class Shares are available to clients of the Adviser with combined
investments of $5,000,000 and Shareholder Organizations who have a contractual
arrangement with the Fund or the Fund's Distributor, including institutions such
as trusts, foundations or broker-dealers purchasing for the accounts of others.

Institutional Class Shares of each portfolio, except for the Cash Reserves
Portfolio, may be purchased at the net asset value per share next determined
after receipt of the purchase order. Such portfolios determine net asset value
as described under General Shareholder Information-Valuation of Shares each day
that the portfolios are open for business. See Other Information-Closed Holidays
and General Shareholder Information-Valuation of Shares.
    

The Cash Reserves Portfolio declares dividends daily and, therefore, at the time
of a purchase must have funds immediately available for investment. As a result,
payment for the purchase of shares must be in the form of Federal Funds (monies
credited to the portfolio's Custodian by a Federal Reserve Bank) before they can
be accepted by the portfolio. The portfolio is credited with Federal Funds on
the same day if the investment is made by Federal Funds. Institutional Class
Shares of the Cash Reserves Portfolio may be purchased at the net asset value
next determined after an order is received by the portfolio and Federal Funds
are received by the Custodian. The Cash Reserves Portfolio determines net asset
value as of 12:00 noon (Eastern Time) each day that the portfolios are open for
business. See Other Information-Closed Holidays and Valuation of Shares.

   
Initial Purchase by Mail: Subject to acceptance by the Fund, an account may be
opened by completing and signing an Account Registration Form (provided at the
end of the prospectus) and mailing it to MAS Funds c/o Miller Anderson &
Sherrerd, LLP, One Tower Bridge, West Conshohocken, Pennsylvania 19428-0868
together with a check ($5,000,000 minimum) payable to MAS Funds.
    


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MAS Fund - 54          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
The portfolios requested should be designated on the Account Registration Form.
Subject to acceptance by the Fund, payment for the purchase of shares received
by mail will be credited at the net asset value per share of the portfolio next
determined after receipt. Such payment need not be converted into Federal Funds
(monies credited to the Fund's Custodian Bank by a Federal Reserve Bank) before
acceptance by the Fund, except for the Cash Reserves Portfolio. Purchases made
by check in the Cash Reserves Portfolio are ordinarily credited at the net asset
value per share determined two business days after receipt of the check by the
Fund. Please note that payments to investors who redeem shares purchased by
check will not be made until payment of the purchase has been collected, which
may take up to eight business days after purchase. Shareholders can avoid this
delay by purchasing shares by wire.

Initial Purchase by Wire: Subject to acceptance by the Fund, Institutional Class
Shares of each portfolio may also be purchased by wiring Federal Funds to the
Fund's Custodian Bank, The Chase Manhattan Bank (see instructions below). A
completed Account Registration Form should be forwarded to MAS Funds' Client
Services Group in advance of the wire. For all portfolios except the Cash
Reserves Portfolio, notification must be given to MAS Funds' Client Services
Group at 1-800-354-8185 prior to the determination of net asset value.

Institutional Class Shares will be purchased at the net asset value per share
next determined after receipt of the purchase order. (Prior notification must
also be received from investors with existing accounts.) Instruct your bank to
send a Federal Funds Wire in a specified amount to the Fund's Custodian Bank
using the following wiring instructions:

                       The Chase Manhattan Bank
                       1 Chase Manhattan Plaza
                       New York, NY 10081
                       ABA #021000021
                       DDA #910-2-734143
                       Attn: MAS Funds Subscription Account
                       Ref: (Portfolio Name, Account Number, Account Name)
                         
Purchases in the Cash Reserves Portfolio may also be made by Federal Funds wire
to the Fund's Custodian. If the portfolio receives notification of an order
prior to 12:00 noon (Eastern Time) and funds are received by the Custodian the
same day, purchases of portfolio shares will become effective and begin to earn
income on that business day. Orders received after 12:00 noon (Eastern Time)
will be effective on the next business day upon receipt of funds. Federal Funds
purchases will be accepted only on a day on which the portfolio is open for
business. See Other Information-Closed Holidays.

Additional Investments: Additional investments of Institutional Class Shares at
net asset value may be made at any time (minimum additional investment $1,000)
by mailing a check (payable to MAS Funds) to MAS Funds' Client Services Group at
the address noted under Initial Purchase by Mail or by wiring Federal Funds to
the Custodian Bank as outlined above. Shares will be purchased at the net asset
value per share next determined after receipt of the purchase order. For all
portfolios, except the Cash Reserves Portfolio, notification must be given to
MAS Funds' Client Services Group at 1-800-354-8185 prior to the determination of
net asset value. For the Cash Reserves Portfolio, notification of a Federal
Funds wire must be received by 12:00 noon (Eastern Time). Purchases made by
check in the Cash Reserves Portfolio are ordinarily credited at the net asset
value per share determined two business days after receipt of the check by the
Fund.

Other Purchase Information: The Fund reserves the right, in its sole discretion,
to suspend the offering of any of its portfolios or to reject any purchase
orders when, in the judgment of management, such suspension or rejection is in
the best interest of the Fund. The Fund also reserves the right, in its sole
discretion, to waive the minimum initial and additional investment amounts.

Purchases of a portfolio's shares will be made in full and fractional shares of
the portfolio calculated to three decimal places. In the interest of economy and
convenience, certificates for shares will not be issued except at the written
request of the shareholder. Certificates for fractional shares, however, will
not be issued.
    


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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 55
<PAGE>

   
Institutional Class Shares of the Fund's portfolios are also sold to
corporations or other institutions such as trusts, foundations or broker-dealers
purchasing for the accounts of others (Shareholder Organizations). Investors
purchasing and redeeming shares of the portfolios through a Shareholder
Organization may be charged a transaction-based fee or other fee for the
services of such organization. Each Shareholder Organization is responsible for
transmitting to its customers a schedule of any such fees and information
regarding any additional or different conditions regarding purchases and
redemptions. Customers of Shareholder Organizations should read this Prospectus
in light of the terms governing accounts with their organization. The Fund does
not pay compensation to or receive compensation from Shareholder Organizations
for the sale of Institutional Class Shares.

REDEMPTION OF SHARES

Shares of each portfolio may be redeemed by mail, or, if authorized, by
telephone. No charge is made for redemptions. The value of shares redeemed may
be more or less than the purchase price, depending on the net asset value at the
time of redemption which is based on the market value of the investment
securities held by the portfolio. See Other Information-Closed Holidays and
Valuation of Shares.

By Mail: Each portfolio will redeem shares at the net asset value next
determined after the request is received in good order. Requests should be
addressed to MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge,
West Conshohocken, PA 19428-0868.

To be in good order, redemption requests must include the following
documentation:

(a) The share certificates, if issued;

(b) A letter of instruction, if required, or a stock assignment specifying the
number of shares or dollar amount to be redeemed, signed by all registered
owners of the shares in the exact names in which the shares are registered;

(c) Any required signature guarantees (see Signature Guarantees); and

(d) Other supporting legal documents, if required, in the case of estates,
trusts, guardianships, custodianships, corporations, pension and profit sharing
plans and other organizations.

Signature Guarantees: To protect your account, the Fund and the Administrator
from fraud, signature guarantees are required to enable the Fund to verify the
identity of the person who has authorized a redemption from an account.
Signature guarantees are required for (1) redemptions where the proceeds are to
be sent to someone other than the registered shareholder(s) and the registered
address, and (2) share transfer requests. Please contact MAS Funds' Client
Services Group for further details.

By Telephone: Provided the Telephone Redemption Option has been authorized by
the shareholder on the Account Registration Form, a redemption of shares may be
requested by calling MAS Funds' Client Services Group and requesting that the
redemption proceeds be mailed to the primary registration address or wired per
the authorized instructions. Shares cannot be redeemed by telephone if share
certificates are held for those shares.

By Facsimile: Written requests in good order (see above) for redemptions,
exchanges, and transfers may be forwarded to the Fund via facsimile. All
requests sent to the Fund via facsimile must be followed by a telephone call to
MAS Funds' Client Services Group to ensure that the instructions have been
properly received by the Fund. The original request must be promptly mailed to
MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge, West
Conshohocken, PA 19428-0868.

Neither the Distributor nor the Fund will be responsible for any loss,
liability, cost, or expense for acting upon facsimile instructions or upon
telephone instructions that they reasonably believe to be genuine. In order to
confirm that 
    


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MAS Fund - 56          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
telephone instructions in connection with redemptions are genuine, the Fund and
Distributor will provide written confirmation of transactions initiated by
telephone.

Payment of the redemption proceeds will ordinarily be made within three business
days after receipt of an order for a redemption. The Fund may suspend the right
of redemption or postpone the date of redemption at times when the New York
Stock Exchange ("NYSE"), the Custodian, or the Fund is closed (see Other
Information-Closed Holidays) or under any emergency circumstances as determined
by the SEC.

If the Board of Trustees determines that it would be detrimental to the best
interests of the remaining shareholders of the Fund to make payment wholly or
partly in cash, the Fund may pay the redemption proceeds in whole or in part by
a distribution in-kind of readily marketable securities held by a portfolio in
lieu of cash in conformity with applicable rules of the SEC. Investors may incur
brokerage charges on the sale of portfolio securities received in such payments
of redemptions.

SHAREHOLDER SERVICES

Exchange Privilege: Each portfolio's Institutional Class Shares may be exchanged
for shares of the Fund's other portfolios offering Institutional Class Shares
based on the respective net asset values of the shares involved. The exchange
privilege is only available, however, with respect to portfolios that are
qualified for sale in a shareholder's state of residence. There are no exchange
fees. Exchange requests should be sent to MAS Funds, c/o Miller Anderson &
Sherrerd, LLP, One Tower Bridge, West Conshohocken, PA 19428-0868.

Because an exchange of shares amounts to a redemption from one portfolio and
purchase of shares of another portfolio, the above information regarding
purchase and redemption of shares applies to exchanges. Shareholders should note
that an exchange between portfolios is considered a sale and purchase of shares.
The sale of shares may result in a capital gain or loss for tax purposes.

The officers of the Fund reserve the right not to accept any request for an
exchange when, in their opinion, the exchange privilege is being used as a tool
for market timing. The Fund reserves the right to change the terms or conditions
of the exchange privilege discussed herein upon sixty days' notice.

Transfer of Registration: The registration of Fund shares may be transferred by
writing to MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge,
West Conshohocken, PA 19428-0868. As in the case of redemptions, the written
request must be received in good order as defined above. Unless shares are being
transferred to an existing account, requests for transfer must be accompanied by
a completed Account Registration Form for the receiving party.

VALUATION OF SHARES

Equity, Growth, International Equity, Emerging Markets Value, Mid Cap Growth,
Mid Cap Value, Small Cap Value and Value Portfolios:

Net asset value per share is determined by dividing the total market value of
each portfolio's investments and other assets, less any liabilities, by the
total outstanding shares of that portfolio. Net asset value per share is
determined as of the close of the NYSE (normally 4:00 p.m. Eastern Time) on each
day the portfolio is open for business (See Other Information-Closed Holidays).
Equity Securities listed on a U.S. securities exchange or Nasdaq for which
market quotations are available are valued at the last quoted sale price on the
day the valuation is made. Price information on listed Equity Securities is
taken from the exchange where the security is primarily traded. Equity
Securities listed on a foreign exchange are valued at the latest quoted sales
price available before the time when assets are valued. For purposes of net
asset value per share, all assets and liabilities initially expressed in foreign
currencies are converted into U.S. dollars at the bid price of such currencies
against U.S. dollars. Unlisted Equity Securities and listed U.S. Equity
Securities not traded on the valuation date for which market quotations are
readily available are valued at the mean of the most recent quoted bid and asked
price. The values of other assets and securities for which no quotations 
    


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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 57
<PAGE>

   
are readily available (including restricted securities), and, to the extent
permitted by the SEC, securities for which the value has been materially
affected by events occurring after the close of the market on which they
principally trade, are determined in good faith at fair value using methods
approved by the Trustees.

Domestic Fixed Income, Fixed Income, Fixed Income Portfolio II, Global Fixed
Income, High Yield, Intermediate Duration, International Fixed Income,
Multi-Market Fixed Income, Limited Duration, Mortgage-Backed Securities,
Municipal, PA Municipal and Special Purpose Fixed Income Portfolios:

Net asset value per share is computed by dividing the total value of the
investments and other assets of the portfolio, less any liabilities, by the
total outstanding shares of the portfolio. The net asset value per share is
determined as of one hour after the close of the bond markets (normally 4:00
p.m. Eastern Time) on each day the portfolio is open for business (See Other
Information-Closed Holidays). Bonds and other Fixed-Income Securities listed on
a foreign exchange are valued at the latest quoted sales price available before
the time when assets are valued. For purposes of net asset value per share, all
assets and liabilities initially expressed in foreign currencies will be
converted into U.S. dollars at the bid price of such currencies against U.S.
dollars.
    

Net asset value includes interest on bonds and other Fixed-Income Securities
which is accrued daily. Bonds and other Fixed-Income Securities which are traded
over the counter and on an exchange will be valued according to the broadest and
most representative market, and it is expected that for bonds and other
Fixed-Income Securities this ordinarily will be the over-the-counter market.

   
However, bonds and other Fixed-Income Securities may be valued on the basis of
prices provided by a pricing service when such prices are believed to reflect
the fair market value of such securities. The prices provided by a pricing
service are determined without regard to bid or last sale prices but take into
account institutional size trading in similar groups of securities and any
developments related to specific securities. Bonds and other Fixed-Income
Securities not priced in this manner are valued at the most recent quoted bid
price, or when stock exchange valuations are used, at the latest quoted sale
price on the day of valuation. If there is no such reported sale, the latest
quoted bid price will be used. Securities purchased with remaining maturities of
60 days or less are valued at amortized cost when the Board of Trustees
determines that amortized cost reflects fair value. In the event that amortized
cost does not approximate market, market prices as determined above will be
used. Other assets and securities, for which no quotations are readily available
(including restricted securities), and, to the extent permitted by the SEC,
securities for which the value has been materially affected by events occurring
after the close of the market on which they principally trade, will be valued in
good faith at fair value using methods approved by the Board of Trustees.

Balanced, Multi-Asset-Class and Balanced Plus Portfolios: Net asset value per
share is computed by dividing the total value of the investments and other
assets of the portfolio, less any liabilities, by the total outstanding shares
of the portfolio. The net asset value per share of the Balanced,
Multi-Asset-Class and Balanced Plus Portfolios is determined as of the later of
the close of the NYSE or one hour after the close of the bond markets on each
day the portfolios are open for business. Equity, fixed-income and other
securities held by the portfolios will be valued using the policies described
above.
    

Cash Reserves Portfolio: The net asset value per share of the Cash Reserves
Portfolio is calculated daily as of 12:00 noon (Eastern Time) on each day that
the portfolio is open for business (See Other Information-Closed Holidays). The
portfolio determines its net asset value per share by subtracting the
portfolio's liabilities (including accrued expenses and dividends payable) from
the total value of the portfolio's investments and other assets and dividing the
result by the total outstanding shares of the portfolio.

   
For the purpose of calculating the portfolio's net asset value per share,
securities are valued by the amortized cost method of valuation, which does not
take into account unrealized gains or losses. This 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 based on
amortized cost is higher or lower than the price the portfolio would receive if
it sold the instrument.
    


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MAS Fund - 58          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
The use of amortized cost and the maintenance of the portfolio's per share net
asset value at $1.00 is based on its election to operate under the provisions of
Rule 2a-7 under the 1940 Act. As conditions of operating under Rule 2a-7, the
portfolio must maintain a dollar-weighted average portfolio maturity of 90 days
or less, purchase only instruments having remaining maturities of thirteen
months or less and invest only in U.S. dollar-denominated securities which are
determined by the Trustees to present minimal credit risks and which are of
eligible quality as determined under the rule.

The Board of Trustees has also agreed to establish procedures reasonably
designed, taking into account current market conditions and the portfolio's
investment objective, to stabilize the net asset value per share as computed for
the purposes of sales and redemptions at $1.00. These procedures include
periodic review, as the Trustees deem appropriate and at such intervals as are
reasonable in light of current market conditions, of the relationship between
the amortized cost value per share and a net asset value per share based upon
available indications of market value. In such a review, investments for which
market quotations are readily available are valued at the most recent bid price
or quoted yield equivalent for such securities or for securities of comparable
maturity, quality and type as obtained from one or more of the major market
makers for the securities to be valued. Other investments and assets are valued
at fair value, as determined in good faith by the Board of Trustees.

In the event of a deviation of over 1/2 of 1% between a portfolio's net asset
value based upon available market quotations or market equivalents and $1.00 per
share based on amortized cost, the Trustees will promptly consider what action,
if any, should be taken. The Board of Trustees will also take such action as
they deem appropriate to eliminate or to reduce to the extent reasonably
practicable any material dilution or other unfair results which might arise from
differences between the two. Such action may include redeeming shares in kind,
selling instruments prior to maturity to realize capital gains or losses or to
shorten average maturity, withholding dividends, paying distributions from
capital or capital gains, or utilizing a net asset value per share not equal to
$1.00 based upon available market quotations.

All Portfolios: Net asset value per share for Investment Class Shares,
Institutional Class Shares and Adviser Class Shares may differ due to
class-specific expenses paid by each class, and the shareholder servicing fees
charged to Investment Class Shares and distribution fees charged to Adviser
Class Shares.

DIVIDENDS, DISTRIBUTIONS AND TAXES: Dividends and Distributions: The Fund
maintains different dividend and capital gain distribution policies for each
portfolio. These are:

o     The Equity, Value, Growth, Fixed Income, Fixed Income II, Special Purpose
      Fixed Income, High Yield, Limited Duration, Intermediate Duration,
      Mortgage-Backed Securities, Balanced, Multi-Asset-Class, Global Fixed
      Income, International Fixed Income, Multi-Market Fixed Income, Domestic
      Fixed Income and Balanced Plus Portfolios normally distribute
      substantially all of their net investment income to shareholders on a
      quarterly basis.

o     The International Equity, Emerging Markets Value, Small Cap Value, Mid Cap
      Value and Mid Cap Growth Portfolios normally distribute substantially all
      of their net investment income on an annual basis.

o     The Municipal and the PA Municipal Portfolios normally distribute
      substantially all of their net investment income on a monthly basis.

o     The Cash Reserves Portfolio declares distributions daily and normally
      distributes substantially all of its investment income on a monthly basis.
    

If any portfolio does not have income available to distribute, as determined in
compliance with the appropriate tax laws, no distribution will be made.
   

If any net are realized from the sale of underlying securities, the portfolios
normally distribute such gains with the last distribution for the calendar year.

All dividends and capital gains distributions are automatically paid in
additional shares of the portfolio unless the shareholder elects otherwise. Such
election must be made in writing to the Fund and may be made on the Account
Registration Form.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 59
<PAGE>

   
In all portfolios except the Cash Reserves Portfolio, undistributed net
investment income is included in the portfolio's net assets for the purpose of
calculating net asset value per share. Therefore, on the ex-dividend date, the
net asset value per share excludes the dividend (i.e., is reduced by the per
share amount of the dividend). Dividends paid shortly after the purchase of
shares by an investor, although in effect a return of capital, are taxable as
ordinary income.

Certain Mortgage Securities may provide for periodic or unscheduled payments of
principal and interest as the mortgages underlying the securities are paid or
prepaid. However, such principal payments (not otherwise characterized as
ordinary discount income or bond premium expense) will not normally be
considered as income to the portfolio and therefore will not be distributed as
dividends. Rather, these payments on mortgage-backed securities will be
reinvested on behalf of the shareholders by the portfolio in accordance with its
investment objectives and policies.

Special Considerations for the Cash Reserves Portfolio: Net investment income is
computed and dividends declared as of 12:00 noon (Eastern Time), on each day.
Such dividends are payable to Cash Reserves Portfolio shareholders of record as
of 12:00 noon (Eastern Time) on that day, if the portfolio is open for business.
Shareholders who redeem prior to 12:00 noon (Eastern Time) are not entitled to
dividends for that day. Dividends declared for Saturdays, Sundays and holidays
are payable to shareholders of record as of 12:00 noon (Eastern Time) on the
preceding business day on which the portfolio was open for business. Net
realized short-term capital gains, if any, of the Cash Reserves Portfolio will
be distributed whenever the Trustees determine that such distributions would be
in the best interest of shareholders, but at least once a year. The portfolio
does not expect to realize any long-term capital gains. Should any such gains be
realized, they will be distributed annually.

TAXES: The following is a summary of some important tax issues that affect the
portfolios of the Fund and their shareholders. The summary is based on current
tax laws and regulations, which may be changed by legislative, judicial or
administrative action. No attempt has been made to present a detailed
explanation of the tax treatment of each portfolio or its shareholders. More
information about taxes is in the Statement of Additional Information.
Shareholders are urged to consult their tax advisors regarding specific
questions as to federal, state and local income taxes.

Federal Taxes: Each portfolio of the Fund is treated as a separate entity for
federal income tax purposes and intends to qualify for the special tax treatment
afforded regulated investment companies. As such, each portfolio will not be
subject to federal income tax to the extent it distributes net investment
company taxable income and net capital gains to shareholders. The Fund will
notify shareholders annually as to the tax classification of all distributions.

Income dividends received by shareholders (except for shareholders of the
Municipal and PA Municipal Portfolios (see Special Tax Considerations for the
Municipal and PA Municipal Portfolios) will be taxable as ordinary income,
whether received in cash or in additional shares. In the case of the Equity,
Value, Small Cap Value, Mid Cap Growth, Growth, Balanced, Balanced Plus,
Multi-Asset-Class and Mid Cap Value Portfolios, corporate shareholders may be
entitled to a dividends-received deduction for the portion of dividends they
receive which are attributable to dividends received by such portfolios from
U.S. corporations. Capital gains distributions are taxable to shareholders at
capital gains rates. Each portfolio will designate capital gains distributions
to individual shareholders as either subject to the federal capital gains rate
imposed on property held for more than 18 months or on property held for more
than 1 year but not more than 18 months.

Distributions paid in January but declared by a portfolio in October, November
or December of the previous year are taxable to shareholders in the previous
year.

Each portfolio intends to declare and pay dividends and distributions so as to
avoid imposition of the federal excise tax applicable to regulated investment
companies. Further discussion is included in the Statement of Additional
Information.

The Fund is required by federal law to withhold 31% of reportable payments
(which may include dividends and capital gains distributions) paid to
shareholders. In order to avoid this withholding requirement, shareholders must
certify on their Account Registration Forms that their Social Security Number or
Taxpayer Identification Number is correct, and that they are not subject to
backup withholding. 
    


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MAS Fund - 60          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Exchanges and redemptions of shares in a portfolio are taxable events.

Foreign Income Taxes: Investment income received by the portfolios from sources
within foreign countries may be subject to foreign income taxes withheld at the
source. Each of the International Equity, Emerging Markets Value, Global Fixed
Income, International Fixed Income, Multi-Market Fixed Income, Multi-Asset-Class
and Balanced Plus Portfolios may be able to file an election with the Internal
Revenue Service to pass through to its shareholders for foreign tax credit
purposes the amount of foreign income taxes paid by such portfolio. Further
discussion is included in the Statement of Additional Information. The other
portfolios of the Fund will not be able to make this election.
    

State and Local Income Taxes: The Fund is formed as a Pennsylvania Business
Trust and is not liable for any corporate income or franchise tax in the
Commonwealth of Pennsylvania. Shareholders should consult their tax advisors for
the state and local income tax consequences of distributions from the
portfolios.

   
Special Tax Considerations for the Municipal and PA Municipal Portfolios: Each
of the Municipal and PA Municipal Portfolios intends to pay "exempt-interest"
dividends to shareholders which are excluded from a shareholder's gross income
for federal income tax purposes. Exempt-interest dividends received by
shareholders from such portfolios may be subject to state and local taxes,
although some states allow a shareholder to exclude that portion of a
portfolio's tax-exempt income which is accountable to municipal securities
issued within the shareholder's state of residence.

Since each of the portfolios may invest in private activity municipal
securities, investment in either of the portfolios may not be an appropriate
investment for persons who are "substantial users" (or persons related to
"substantial users") of facilities financed by industrial development bonds or
private activity bonds.

To the extent, if any, that distributions paid to shareholders of either
portfolio are derived from taxable interest or capital gains, such distributions
will be subject to federal income tax. Additionally, such distributions are not
eligible for the dividends received deduction for corporations.

Furthermore, the PA Municipal Portfolio invests at least 65% of its assets in PA
Municipals. As a result, the income of the PA Municipal Portfolio that is
derived from PA Municipals and U.S. Governments will not be subject to the
Pennsylvania personal income tax or to the Philadelphia School District
investment net income tax. Distributions by the PA Municipal Portfolio to a
Pennsylvania resident that are attributable to most other sources may be subject
to the Pennsylvania personal income tax and (for residents of Philadelphia) to
the Philadelphia School District investment net income tax.

Further discussion of tax considerations affecting shareholders of these
portfolios is found in the Statement of Additional Information.

TRUSTEES OF THE TRUST: The affairs of the Trust are supervised by the Trustees
under the laws governing business trusts in the Commonwealth of Pennsylvania.
The Trustees have approved contracts under which, as described above, certain
companies provide essential management, administrative and shareholder services
to the Trust.

INVESTMENT ADVISER: The Investment Adviser to the Fund, Miller Anderson &
Sherrerd, LLP (the "Adviser"), is a Pennsylvania limited liability partnership
founded in 1969, wholly owned by indirect subsidiaries of Morgan Stanley, Dean
Witter, Discover & Co., and is located at One Tower Bridge, West Conshohocken,
PA 19428. The Adviser provides investment services to employee benefit plans,
endowment funds, foundations and other institutional investors and as of
December 31, 1997 had in excess of $58.1 billion in assets under management. On
May 31, 1997, Morgan Stanley Group Inc., then the indirect parent of the
Adviser, merged with Dean Witter, Discover & Co. to form Morgan Stanley, Dean
Witter, Discover & Co. In connection with this transaction, the Adviser entered
into a new Investment Management Agreement ("Agreement") with MAS Funds dated
May 31, 1997, which Agreement was approved by the shareholders of each portfolio
at a special meeting held on May 1, 1997 or at an adjournment of such meeting
held on May 12, 1997. The Adviser will retain its name and remain at its current
location, One Tower
    


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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 61
<PAGE>

Bridge, West Conshohocken, PA 19428. The Adviser will continue to provide
investment counseling services to employee benefit plans, endowments,
foundations and other institutional investors.

   
Under the Agreement with the Fund, the Adviser, subject to the control and
supervision of the Fund's Board of Trustees and in conformance with the stated
investment objectives and policies of each portfolio of the Fund, manages the
investment and reinvestment of the assets of each portfolio of the Fund. In this
regard, it is the responsibility of the Adviser to make investment decisions for
the Fund's portfolios and to place each portfolio's purchase and sales orders.
As compensation for the services rendered by the Adviser under the Agreement,
each portfolio pays the Adviser an advisory fee calculated by applying a
quarterly rate. The following table shows the Adviser's contractual rate
(annualized) along with the Adviser's actual rate of compensation for the Fund's
1997 fiscal year.

                                                                  FY 1997
                                            Contractual           Actual
                                               Rate           Compensation Rate
                                               -----           -----------------
Equity Portfolio                               .500%                .500%
Growth Portfolio                               .500                  N/A
International Equity Portfolio                 .500                 .500
Emerging Markets Value Portfolio               .750                 .652
Mid Cap Growth Portfolio                       .500                 .500
Mid Cap Value Portfolio                        .750                 .727
Small Cap Value Portfolio                      .750                 .750
Value Portfolio                                .500                 .500
Cash Reserves Portfolio                        .250                 .180
Domestic Fixed Income Portfolio                .375                 .364
Fixed Income Portfolio                         .375                 .375
Fixed Income Portfolio II                      .375                 .375
Global Fixed Income Portfolio                  .375                 .375
High Yield Portfolio                           .375                 .375
Intermediate Duration Portfolio                .375                 .325
International Fixed Income Portfolio           .375                 .375
Limited Duration Portfolio                     .300                 .297
Mortgage-Backed Securities Portfolio           .375                 .334
Municipal Portfolio                            .375                 .329
PA Municipal Portfolio                         .375                 .283
Special Purpose Fixed Income Portfolio         .375                 .375
Multi-Market Fixed Income Portfolio            .450                  N/A
Balanced Portfolio                             .450                 .450
Multi-Asset-Class Portfolio                    .650                 .528
Balanced Plus Portfolio                        .550                  N/A

Until further notice, the Adviser has voluntarily agreed to waive its advisory
fees and/or reimburse certain expenses to the extent necessary to keep Total
Operating Expenses actually deducted from portfolio assets for the Institutional
Class of the Emerging Markets Value, Cash Reserves, Mortgage-Backed Securities, 
Municipal, PA Municipal, Multi-Market Fixed Income and Multi-Asset-Class 
Portfolios from exceeding 1.18%, 0.32%, 0.50%, 0.50%, 0.50%, 0.58% and 
0.78%, respectively.

PORTFOLIO MANAGEMENT

A description of the business experience during the past five years for each of
the investment professionals who are primarily responsible for the day-to-day
management of the Fund's portfolios is as follows:
    

Robert E. Angevine, Principal, Morgan Stanley, joined Morgan Stanley Asset
Management in 1988. He assumed responsibility for the High Yield Portfolio in
1996.


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MAS Fund - 62          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

Arden C. Armstrong, Managing Director, Morgan Stanley, joined MAS in 1986. She
assumed responsibility for the Mid Cap Growth Portfolio in 1990, the Growth
Portfolio in 1993 and the Equity Portfolio in 1994.
   

Richard M. Behler, Principal, Morgan Stanley, joined MAS in 1995. He served as a
Portfolio Manager from 1992 through 1995 for Moore Capital Management. He
assumed responsibility for the Value Portfolio in 1996.

Thomas L. Bennett, Managing Director, Morgan Stanley, joined MAS in 1984. He
assumed responsibility for the Fixed Income Portfolio in 1984, the Domestic
Fixed Income Portfolio 1987, the High Yield Portfolio in 1985, the Fixed Income
Portfolio II in 1990, the Special Purpose Fixed Income and Balanced Portfolio in
1992, the Multi-Asset-Class Portfolio in 1994, the Balanced Plus Portfolio in
1996 and the Multi-Market Fixed Income Portfolio in 1997.

Bradley S. Daniels, Vice President, Morgan Stanley, joined MAS in 1985. He
assumed responsibility for the Small Cap Value Portfolio in 1986 and the Mid Cap
Value Portfolio in 1994.

Kenneth B. Dunn, Managing Director, Morgan Stanley, joined MAS in 1987. He
assumed responsibility for the Fixed Income and the Domestic Fixed Income
Portfolios in 1987, the Fixed Income II Portfolio in 1990, the Mortgage-Backed
Securities and Special Purpose Fixed Income Portfolios in 1992, the Municipal
and PA Municipal Portfolios in 1994 and the Multi-Market Fixed Income Portfolio
in 1997.

Hassan Elmasry, Principal, Morgan Stanley, joined MAS in 1995. He served as
First Vice President & International Equity Portfolio Manager from 1987 through
1995 for Mitchell Hutchins Asset Management. He assumed responsibility for the
International Equity Portfolio in 1996.

Stephen F. Esser, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the High Yield Portfolio in 1989 and the Multi-Market
Fixed Income Portfolio in 1997.
    

Abigail Jones Feder, Principal, Morgan Stanley, joined Morgan Stanley in 1985.
She assumed responsibility for the Cash Reserves Portfolio in 1996.

   
William B. Gerlach, Vice President, Morgan Stanley, joined MAS in 1991. He
assumed responsibility for the Small Cap Value and Mid Cap Value Portfolios in
1996.

J. David Germany, Managing Director, Morgan Stanley, joined MAS in 1991. He
assumed responsibility for the Global Fixed Income and International Fixed
Income Portfolios in 1993, the Multi-Asset-Class Portfolio in 1994, the Balanced
Plus Portfolio in 1996 and the Multi-Market Fixed Income Portfolio in 1997.

Paul Ghaffari, Principal, Morgam Stanley, joined Morgan Stanley in 1993. He
served as Vice President in the Fixed Income Division of Emerging Markets Sales
and Trading Department at Morgan Stanley. He assumed responsibility for the
Multi-Market Fixed Income Portfolio in 1997.

Ellen D. Harvey, Principal, Morgan Stanley, joined MAS in 1984. She assumed
responsibility for the Cash Reserves Portfolio in 1990, the Limited Duration
Portfolio in 1992 and the Intermediate Duration Portfolio in 1994.
    

James J. Jolinger, Vice President, Morgan Stanley, joined MAS in 1994. He served
as Equity Analyst for Oppenheimer Capital from 1987-1994. He assumed
responsibility for the Equity Portfolio in 1997.

   
Abhi Y. Kanitkar, Vice President, Morgan Stanley, joined MAS in 1994. He served
as an Investment Analyst from 1993 through 1994 for Newbold's Asset Management.
He assumed responsibility for the Mid Cap Growth Portfolio in 1996.

Nicholas J. Kovich, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the Equity Portfolio in 1994 and the Value Portfolio
in 1997.
    


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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 63
<PAGE>

   
Brian Kramp, Vice President, Morgan Stanley, joined MAS in 1997. He served as
Analyst/Portfolio Manager for Meridian Asset Management and its successor,
Corestates Investment Advisors from 1985-1997. He assumed responsibility for the
Value Portfolio in 1998.
    

Steven K. Kreider, Principal, Morgan Stanley, joined MAS in 1988. He assumed
responsibility for the Municipal and the PA Municipal Portfolios in 1992.

Michael Kushma, Principal, Morgan Stanley, joined Morgan Stanley in 1988. He
assumed responsibility for the Global Fixed Income and International Fixed
Income Portfolios in 1996.

   
Chris Leavy, Morgan Stanley, joined MAS in 1997. He served as a Portfolio
Manager for Capitoline Investment Services from 1995-1997; a Portfolio Manager
for Premier Trust Company from 1994 to 1995; and as a Research Analyst for Leavy
Investment Management from 1993-1994. He assumed responsibility for the Mid Cap
Value and Small Cap Value Portfolio in 1998.
    

Robert J. Marcin, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the Value Portfolio in 1990 and the Equity Portfolio
in 1994.

   
Paul F. O'Brien, Principal, Morgan Stanley, joined MAS in 1996. He served as
Head of European Economics from 1993 through 1995 for JP Morgan. He assumed
responsibility for the Global Fixed Income and International Fixed Income
Portfolios in 1996.

Scott F. Richard, Managing Director, Morgan Stanley, joined MAS in 1992. He
assumed responsibility for the Mortgage-Backed Securities Portfolio in 1992, the
Limited Duration, Intermediate Duration, Municipal and PA Municipal Portfolios
in 1994 and the Advisory Mortgage Portfolio in 1995.
    

Christian G. Roth, Principal, Morgan Stanley, joined MAS in 1991. He assumed
responsibility for the Limited Duration and Intermediate Duration Portfolios in
1994.

   
Gary G. Schlarbaum, Managing Director, Morgan Stanley; Director, MAS Fund
Distribution, Inc.; joined MAS in 1987. He assumed responsibility for the Equity
and Small Cap Value Portfolios in 1987, the Growth Portfolio in 1993, the
Balanced Portfolio in 1992 and the Multi-Asset-Class and Mid Cap Value
Portfolios in 1994.

Robert Sella, Principal, Morgan Stanley, joined MAS in 1992. He assumed
responsibility for the Mortgage-Backed Securities Portfolio in 1998.

Horacio A. Valeiras, Principal, Morgan Stanley, joined MAS in 1992. He assumed
responsibility for the International Equity Portfolio in 1992, the Emerging
Markets Value Portfolio in 1993, the Multi-Asset-Class Portfolio in 1994 and the
Balanced Portfolio in 1996.

Richard B. Worley, Managing Director, Morgan Stanley, joined MAS in 1978. He
assumed responsibility for the Fixed Income Portfolio in 1984, the Domestic
Fixed Income Portfolio in 1987, the Fixed Income Portfolio II in 1990, the
Balanced and Special Purpose Fixed Income Portfolios in 1992, the Global Fixed
Income and International Fixed Income Portfolios in 1993, the Multi-Asset-Class
Portfolio in 1994, the Balanced Plus Portfolio in 1996 and the Multi-Market
Fixed Income Portfolio in 1997.
    

ADMINISTRATIVE SERVICES: MAS serves as Administrator to the Fund pursuant to an
Administration Agreement dated as of November 18, 1993. Under its Administration
Agreement with the Fund, MAS receives an annual fee, accrued daily and payable
monthly, of 0.08% of the Fund's average daily net assets, and is responsible for
all fees payable under any sub-administration agreements. Chase Global Funds
Services Company, a subsidiary of The Chase Manhattan Bank, 73 Tremont Street,
Boston MA 02108-3913, serves as Transfer Agent to the Fund pursuant to an
agreement also dated as of November 18, 1993, and provides fund accounting and
other services pursuant to a sub-administration agreement with MAS as
Administrator.


- --------------------------------------------------------------------------------
MAS Fund - 64          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
GENERAL DISTRIBUTION AGENT: Shares of the Fund are distributed exclusively
through MAS Fund Distribution, Inc., a wholly-owned subsidiary of the Adviser.

PORTFOLIO TRANSACTIONS: The investment advisory agreement authorizes the Adviser
to select the brokers or dealers that will execute the purchases and sales of
investment securities for each of the Fund's portfolios and directs the Adviser
to use its best efforts to obtain the best execution with respect to all
transactions for the portfolios. In doing so, a portfolio may pay higher
commission rates or markups on principal transactions than the lowest available
when the Adviser believes it is reasonable to do so in light of the value of the
research, statistical, and pricing services provided by the broker or dealer
effecting the transaction.

It is not the Fund's practice to allocate brokerage or principal business on the
basis of sales of shares which may be made through intermediary brokers or
dealers. However, the Adviser may place portfolio orders with qualified
broker-dealers who recommend the Fund's Portfolios or who act as agents in the
purchase of shares of the portfolios for their clients.

Some securities considered for investment by each of the Fund's portfolios may
also be appropriate for other clients served by the Adviser. The Adviser may
place a combined order for two or more accounts or portfolios for the purchase
or sale of the same security if, in its judgement, joint execution is in the
best interest of each participant and will result in best price and execution.
If purchase or sale of securities consistent with the investment policies of a
portfolio and one or more of these other clients served by the Adviser is
considered at or about the same time, transactions in such securities will be
allocated among the portfolio and clients in a manner deemed fair and reasonable
by the Adviser. Although there is no specified formula for allocating such
transactions, the various allocation methods used by the Adviser, and the
results of such allocations, are subject to periodic review by the Fund's
Trustees. The Adviser may use its broker dealer affiliates, including Morgan
Stanley & Co., a wholly owned subsidiary of Morgan Stanley, Dean Witter,
Discover & Co., the parent of MAS's general partner and limited partner, to
carry out the Fund's transactions, provided the Fund receives brokerage services
and commission rates comparable to those of other broker dealers.

OTHER INFORMATION: Description of Shares and Voting Rights: The Fund was
established under Pennsylvania law by a Declaration of Trust dated February 15,
1984, as amended and restated as of November 18, 1993. The Fund is authorized to
issue an unlimited number of shares of beneficial interest, without par value,
from an unlimited number of series (portfolios) of shares. Currently the Fund
consists of twenty-seven portfolios.
    

The shares of each portfolio of the Fund are fully paid and non-assessable, and
have no preference as to conversion, exchange, dividends, retirement or other
features. The shares of each portfolio of the Fund have no preemptive rights.
The shares of the Fund have non-cumulative voting rights, which means that the
holders of more than 50% of the shares voting for the election of Trustees can
elect 100% of the Trustees if they choose to do so. Shareholders are entitled to
one vote for each full share held (and a fractional vote for each fractional
share held), then standing in their name on the books of the Fund.

   
Meetings of shareholders will not be held except as required by the 1940 Act and
other applicable law. A meeting will be held to vote on the removal of a Trustee
or Trustees of the Fund if requested in writing by the holders of not less than
10% of the outstanding shares of the Fund. The Fund will assist in shareholder
communication in such matters to the extent required by law.

As of January 5, 1998, Northern Trust Company (Chicago, IL) owned a controlling
interest (as that term is defined by the 1940 Act) of the Cash Reserves
Portfolio; The Northwestern University Investment Department (Evanston, IL) and
Cives Corporation Savings and Profit-Sharing Retirement Trust (Roswell, GA)
owned a controlling interest of the Mortgage-Backed Securities Portfolio;
Ministers and Missionaries Benefit Board of the American Baptist Convention (New
York, NY) and Chemical Bank (New York, NY) owned a controlling interest of the
Emerging Markets Value Portfolio; Northern Trust Company (Chicago, IL) owned a
controlling interest of the Balanced Portfolio; The Charles A. Dana Foundation
Inc. (New York, NY) owned a controlling interest of the Global Fixed Income
Portfolio; Southwest National Bank of Pennsylvania (Greensburg, PA) owned a
controlling interest of the Intermediate Duration Portfolio; and the Connelly
Foundation (West Conshohocken, PA) owned a controlling interest of the
Multi-Market Fixed Income Portfolio.

Custodians: The Chase Manhattan Bank, New York, NY and Morgan Stanley Trust
Company (NY), Brooklyn, NY serve as custodians for the Fund. The custodians hold
cash, securities and other assets as required by the 1940 Act.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 65
<PAGE>

Transfer and Dividend Disbursing Agent: Chase Global Funds Services Company, a
subsidiary of The Chase Manhattan Bank, 73 Tremont Street, Boston, MA
02108-3913, serves as the Funds' Transfer Agent and dividend disbursing agent.

   
Reports: Shareholders receive semi-annual and annual financial statements.
Annual financial statements are audited by Price Waterhouse LLP, independent
accountants.

Litigation: The Fund is not involved in any litigation.

Closed Holidays: Currently, the weekdays on which the Fund is closed for
business are: New Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good
Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and
Christmas Day. In addition, the Cash Reserves Portfolio will be closed on
Columbus Day and Veteran's Day.
    

TRUSTEES AND OFFICERS

The following is a list of the Trustees and the principal executive officers of
the Fund and a brief statement of their present positions and principal
occupations during the past five years:

Thomas L. Bennett,* Chairman of the Board of Trustees; Managing Director, Morgan
Stanley; Portfolio Manager and member of the Executive Committee, Miller
Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.; formerly
Director, Morgan Stanley Universal Funds, Inc.

   
Thomas P. Gerrity, Trustee; Dean and Reliance Professor of Management and
Private Enterprise, Wharton School of Business, University of Pennsylvania;
Director, Digital Equipment Corporation; Director, Sun Company, Inc.; Director,
Fannie Mae; Director, Reliance Group Holdings; Director, CVS Corporation;
Director, Union Carbide Corporation.
    

Joseph P. Healey, Trustee; Headmaster, Haverford School; formerly Dean, Hobart
College; Associate Dean, William & Mary College.

Joseph J. Kearns, Trustee; Vice President and Treasurer, The J. Paul Getty
Trust; Director, Electro Rent Corporation; Trustee, Southern California Edison
Nuclear Decommissioning Trust; Director, The Ford Family Foundation.

Vincent R. McLean, Trustee; Director, Legal and General America, Inc., Director,
William Penn Life Insurance Company of New York; formerly Executive Vice
President, Chief Financial Officer, Director and Member of the Executive
Committee of Sperry Corporation (now part of Unisys Corporation).

   
C. Oscar Morong, Jr., Trustee; Managing Director, Morong Capital Management;
Director, Ministers and Missionaries Benefit Board of American Baptist Churches,
The Indonesia Fund, The Landmark Funds; formerly Senior Vice President and
Investment Manager for CREF, TIAA-CREF Investment Management, Inc.
    

*Trustee Bennett is deemed to be an "interested person" of the Fund as that term
is defined in the Investment Company Act of 1940, as amended.

- --------------------------------------------------------------------------------

James D. Schmid, President, MAS Funds; Principal, Morgan Stanley; Head of Mutual
Funds, Miller Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.;
Chairman of the Board of Directors, The Minerva Fund, Inc.; formerly Vice
President, The Chase Manhattan Bank.

Lorraine Truten, CFA, Vice President, MAS Funds; Principal, Morgan Stanley; Head
of Mutual Fund Services, Miller Anderson & Sherrerd, LLP; President, MAS Fund
Distribution, Inc.

       

John H. Grady, Jr., Secretary, MAS Funds; Partner, Morgan, Lewis & Bockius LLP;
formerly Attorney, Ropes & Gray.


- --------------------------------------------------------------------------------
MAS Fund - 66          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

- --------------------------------------------------------------------------------
   MAS                                                Account Registration Form
- ---------
MAS FUNDS                                            Mas Fund Distribution, Inc.
                                                     General Distribution Agent

- --------------------------------------------------------------------------------
(1)
REGISTRATION/PRIMARY
MAILING ADDRESS

Confirmations and month-end statements will be mailed to this address.

________________________________________________________________________________

________________________________________________________________________________

Attention ______________________________________________________________________

Street or P.O. Box _____________________________________________________________

City ______________________________________  State  _____  Zip  _________ - ____

Telephone No _____ - ______ - ______

Form of Business Entity: |_| Corporation |_| Partnership |_| Trust |_| Other ___

Type of Account: |_| Defined Benefit Plan |_| Defined Contribution Plan 

                 |_| Profit Sharing/Thrift Plan

                 |_| Other Employee Benefit Plan _______________________________

                 |_| Endowment |_| Foundation |_| Taxable |_| Other (Specify)___

|_|  United State Citizen |_| Resident Alien ___________________________________

|_| Non-Resident Alien, Indicate Country of Residence

- --------------------------------------------------------------------------------
(2)
Interested Party
Option

In addition to the account statement sent to the above registered address, the
Fund is authorized to mail duplicate statements to the name and address provided
at right

For additional interested party mailings, please attach a separate sheet.

Attention ______________________________________________________________________

Company
(If Applicable) ________________________________________________________________

Street or P.O. Box _____________________________________________________________

City ______________________________________  State  _____  Zip  _________ - ____

Telephone No _____ - ______ - ______

- --------------------------------------------------------------------------------

(3) INVESTMENT

    For Purchase of:

   
|_| Equity Portfolio                  |_| Fixed Income Portfolio                
|_| Value Portfolio                   |_| Fixed Income Portfolio II             
|_| Growth Portfolio                  |_| Special Purpose Fixed Income Portfolio
|_| Mid Cap Growth Portfolio          |_| High Yield Portfolio                  
|_| Mid Cap Value Portfolio           |_| Limited Duration Portfolio            
|_| Balanced Portfolio                |_| Intermediate Duration Portfolio       
|_| Multi-Asset-Class Portfolio       |_| Mortgage-Backed Securities Portfolio  
|_| Balanced Plus Portfolio           |_| Cash Reserves Portfolio               
|_| Domestic Fixed Income Portfolio

|_| International Equity Portfolio
|_| Emerging Markets Value Portfolio
|_| International Fixed Income Portfolio
|_| Global Fixed Income Portfolio
|_| Multi-Market Fixed Income Portfolio
|_| Municipal Portfolio
|_| PA Municipal Portfolio
    

- --------------------------------------------------------------------------------

(4)
     Taxpayer Identification Number

     Part 1.

                             Social Security Number

                               ____ - ____ - ____

                                       or

                         Employer Identification Number

                               ____ - ____ - ____

Part 2. Backup Withholding

|_| Check the box if the account is subject to Backup Withholding under the
provisions of Section 340(a)(1)(C) of the Internal Revenue Code.

                           Important Tax Information

You (as a payee) are required by law to provide us (as payer) with your correct
taxpayer identification number. Accounts that have a missing or incorrect
taxpayer identification number will be subject to backup withholding at a 31%
rate on ordinary income and capital gains distribution as well as redemptions.
Backup withholding is not an additional tax; the tax liability of person
subjects to backup withholding will be reduced by the amount of tax withheld.

You may be notified that you are subject to backup withholding under section
3406(a)(1)(C) because you have underreported interest or dividends or you were
required to, but failed to, file a return which would have included a reportable
interest or dividend payment. If you have been so notified, check the box in
PART 2 at left.

- --------------------------------------------------------------------------------

Miller
Anderson
& Sherrerd, LLP  ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- --------------------------------------------------------------------------------
                                                              SIDE ONE OF TWO --
<PAGE>

- --------------------------------------------------------------------------------
   MAS                                               
- ---------
MAS FUNDS                                            
                                                     

- --------------------------------------------------------------------------------

(5) TELEPHONE REDEMPTION OPTION

Please sign below if you wish to redeem or exchange shares by telephone.
Redemption proceeds requested by phone may only be mailed to the account's
primary registration address or wired according to bank instructions provided in
writing. A signature guarantee is required if the bank account listed below is
not registered identically to your Fund Account.

The Fund and its agents shall not be liable for reliance on phone instructions
reasonably believed to be genuine. The Fund will maintain procedures designed to
authenticate telephone instructions received.

Telephone requests for redemptions or exchanges will not be honored unless
signature appears below.

(X)
- -------------------------------------------------
Signature                                Date

- --------------------------------------------------------------------------------

(6) WIRING INSTRUCTIONS -- The instructions provided below may only be changed
    by written notification. 

    Please check appropriate box(es):

    |_| Wire redemption proceeds

    |_| Wire distribution proceeds (please complete box 7 below)

_______________________________________________________  _______________________
          Name of Commercial Bank (Net Savings Bank)       Bank Account No.

________________________________________________________________________________
                Name(s) in which your Bank Account is Established

________________________________________________________________________________
                              Bank's Street Address

_______________________________________________________  _______________________
City                        State              Zip         Routing/ABA Number

- --------------------------------------------------------------------------------

(7) DISTRIBUTION OPTION -- Income dividends and capital gains distributions (if
any) will be reinvested in additional shares if no box is checked below.
The instructions provided below may only be changed by written notification.

|_| Income dividends and capital gains to be paid in cash.

|_| Income dividends to be paid in cash and capital gains distribution in
    additional shares.  

|_| Income dividends and capital gains to be reinvested in additional shares.

If cash option is chosen, please indicate instructions below:

|_| Mail distribution check to the name and address in which account is
    registered.    

|_| Wire distribution to the same commercial bank indicated in Section 6 above.

(8) WIRING INSTRUCTIONS

For purchasing Shares by wire, please send a Fedwire payment to:

The Chase Manhattan Bank              
1 Chase Manhattan Plaza
New York, NY 10081
ABA# 021000021
DDA# 910-2-734143
Attn: MAS Funds Subscription Account
Ref. (Portfolio name, your 
     Account number, 
     your Account name)

- --------------------------------------------------------------------------------

SIGNATURE(S) OF ALL HOLDERS AND TAXPAYER CERTIFICATION

The undersigned certify that I/we have full authority and legal capacity to
purchase shares of the Fund and affirm that I/we have received a current MAS
Funds Prospectus and agree to be bound by its terms. Under penalties of perjury
I/we certify that the information provided in Section 4 above is true, correct
and complete. The Internal Revenue Service does not require your consent to any
provision of this document other than the certifications required to avoid
backup withholding.


(X)
- -------------------------------------------------------------------------
Signature                                                      Date


(X)
- -------------------------------------------------------------------------
Signature                                                      Date


(X)
- -------------------------------------------------------------------------
Signature                                                      Date


(X)
- -------------------------------------------------------------------------
Signature                                                      Date

          This application is separate from the prospectus.

- --------------------------------------------------------------------------------

FOR INTERNAL USE ONLY


(X)
- -------------------------------------------------------------------------
Signature                                               Date


- -------------------------------------------------------------------------
      O |_|             F |_|             OR |_|      S |_|

- --------------------------------------------------------------------------------


Miller
Anderson
& Sherrerd, LLP  ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- --------------------------------------------------------------------------------
                                                              SIDE TWO OF TWO --
<PAGE>

- --------------------------------------------------------------------------------
   MAS                                                                PROSPECTUS
- ---------
MAS FUNDS                                            

                                January 31, 1998

  Investment Adviser and Administrator:      Transfer Agent:

  Miller Anderson & Sherrerd, LLP            Chase Global Funds Services Company
  One Tower Bridge                           73 Tremont Street
  West Conshohocken,                         Boston, Massachusetts 02108-0913
  Pennsylvania 19428-2899

                           General Distribution Agent:

                           MAS Fund Distribution, Inc.
                           One Tower Bridge
                           P.O. Box 868
                           West Conshohocken,
                           Pennsylvania 19428-0868

- --------------------------------------------------------------------------------

                               Table of Contents

                          Page                                             Page

   
Fund Expenses                2     General Shareholder Information           
Prospectus Summary           4        Purchase of Shares                     54
Financial Highlights         6        Redemption of Shares                   56
Yield and Total Return      14        Shareholder Services                   57
Investment Suitability      15        Valuation of Shares                    57
Investment Limitations      16        Dividends, Distributions and Taxes     59
Portfolio Summaries         17     Investment Adviser                        61
Equity Investments          17     Portfolio Management                      62
Fixed-Income Investments    22     Administrative Services                   64
Prospectus Glossary                General Distribution Agent                65
   Strategies               39     Portfolio Transactions                    65
   Investments              44     Other Information                         65
                                   Trustees and Officers                     66
    


Miller
Anderson
& Sherrerd, LLP  ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- -------------------------------------------------------------------------------
<PAGE>
   
   MAS                                             INVESTMENT CLASS PROSPECTUS
- ---------
MAS FUNDS
                                January 31, 1998
- --------------------------------------------------------------------------------
Client Services: 1-800-354-8185 Prices and Investment Results: 1-800-522-1525
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
MAS Funds (the Fund) is a no-load mutual fund consisting of twenty-seven
portfolios, nine of which are described in this Prospectus. This Prospectus
offers the Investment Class Shares of these nine portfolios.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
The High Yield Portfolio will invest primarily, and certain other portfolios of
the Fund may invest to varying degrees, in high yield, high risk securities
which are speculative with regard to payment of interest and return of principal
(commonly referred to as junk bonds); therefore, investments in these portfolios
may not be suitable for all investors. See High Yield Investing in the Glossary
of Strategies for additional information regarding certain risks associated with
investment in such securities.
- --------------------------------------------------------------------------------

                            PORTFOLIO PAGE REFERENCE

                        How to Use This Prospectus:    3

                        Portfolio Summaries:
                        Equity:
                            Equity                    11
                            International Equity      11
                            Mid Cap Value             12
                            Value                     13

                        Fixed Income:
                            Domestic Fixed Income     14
                            Fixed Income              15
                            High Yield                16

                        Balanced:
                            Balanced                  17
                            Multi-Asset-Class:        18

                        Prospectus Glossary:
                            Strategies                19
                            Investments               22

                        General Shareholder
                            Information:              32
                                          
                        Table of Contents:     Back Cover
                                          
- --------------------------------------------------------------------------------
This Prospectus, which should be retained for future reference, sets forth
concisely information that you should know before you invest. A Statement of
Additional Information containing additional information about the Fund has been
filed with the Securities and Exchange Commission. Such Statement is dated
January 31, 1998 as revised from time to time, and has been incorporated by
reference into this Prospectus. A copy of the Statement may be obtained, without
charge, by writing to the Fund or by calling the Client Services Group at the
telephone number shown above.
- --------------------------------------------------------------------------------

          THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
     SECURITIES AND EXCHANGE COMMISSION NOR HAS THE SECURITIES AND EXCHANGE
       COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.
            ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
    
MILLER
ANDERSON
& SHERRERD, LLP    ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185


<PAGE>

   
EXPENSE SUMMARY -- INVESTMENT CLASS SHARES

The following tables illustrate the various expenses and fees that a shareholder
in a portfolio will incur either directly or indirectly. The Adviser may from
time to time waive fees or reimburse expenses thereby reducing total operating
expenses.

     Shareholder Transaction Expenses:
     Sales Load Imposed on Purchases                               None
     Sales Load Imposed on Reinvested Dividends                    None
     Redemption Fees                                               None
     Exchange Fees                                                 None

     Annual Fund Operating Expenses:
     (as a percentage of average net assets after fee waivers)
     12b-1 Fees                                                    None
     Shareholder Servicing Fee                                     0.15%


                                           Investment                   Total
                                            Advisory        Other      Operating
     Portfolio                                Fees        Expenses     Expenses
     ---------                                ----        --------     --------
- --------------------------------------------------------------------------------
Equity                                       0.500%        0.250%       0.750
International Equity                         0.500         0.300        0.800
Mid Cap Value                                0.750         0.280        1.030
Value                                        0.500         0.250        0.750
Domestic Fixed Income                        0.375         0.275        0.650
Fixed Income                                 0.375         0.255        0.630
High Yield                                   0.375         0.275        0.650
Balanced                                     0.450         0.280        0.730
Multi-Asset-Class                            0.594*        0.336        0.930

     The Total Operating Expense ratios reflected in the table above may be
     higher than the ratio of expenses actually deducted from portfolio assets
     because of the effect of expense offset arrangements. The result of such
     arrangements is to offset expenses that otherwise would be deducted from
     portfolio assets. The amounts in the above table have been restated to
     reflect current fees and expenses.

*    The Adviser is, on a voluntary basis, waiving a portion of its fee and/or
     reimbursing certain expenses for the Multi-Asset-Class Portfolio. Absent
     such waivers and/or reimbursements by the Adviser, Total Operating Expenses
     would be 0.986%. These fee waivers and expense reimbursements are voluntary
     and may be discontinued at any time at the Adviser's discretion.
    


- --------------------------------------------------------------------------------
MAS Fund - 2          Terms in bold type are defined in the Prospectus Glossary

<PAGE>


   
EXAMPLE

The purpose of this table is to assist in understanding the various expenses
that a shareholder in a portfolio will bear directly or indirectly. The
following example illustrates the expenses that an investor would pay on a
$1,000 investment over various time periods assuming (1) a 5% annual rate of
return, and (2) redemption at the end of each time period. The example should
not be considered a representation of past or future expenses and actual
expenses may be greater or less than those shown. For portfolios with less than
10 months of operations, only the 1 and 3 year examples are shown.

     Portfolio                       1 year     3 year     5 year     10 year
     ---------                       ------     ------     ------     -------
- --------------------------------------------------------------------------------
Equity                                $  8       $ 24       $ 42       $ 93
International Equity                     8         26         44         99
Mid Cap Value                           11         33         57        126
Value                                    8         24         42         93
Domestic Fixed Income                    7         21         36         81
Fixed Income                             6         20         35         79
High Yield                               7         21         36         81
Balanced                                 7         23         41         91
Multi-Asset-Class                        9         30         51        114
- --------------------------------------------------------------------------------

                           HOW TO USE THIS PROSPECTUS

A PROSPECTUS SUMMARY begins on page 4;

FINANCIAL HIGHLIGHTS and a description of YIELD AND TOTAL RETURN begin on page
6;

GENERAL INFORMATION including INVESTMENT LIMITATIONS pertinent to all portfolios
begins on page 9;

SUMMARY PAGES for each portfolio's Objective, Policies and Strategies begin on
page 11;

The PROSPECTUS GLOSSARY which defines specific Allowable Investments, Policies
and Strategies printed in bold type throughout this Prospectus begins on page
19; and

GENERAL SHAREHOLDER INFORMATION begins on page 32.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 3


<PAGE>



   
SUMMARY INFORMATION:

The following information relates to each portfolio of the Fund and should be
read in conjunction with the specific information about each portfolio.

Objectives: Each portfolio seeks to achieve its investment objective relative to
the universe of securities in which it is authorized to invest and, accordingly,
the total return or current income achieved by a portfolio may not be as great
as that achieved by another portfolio that can invest in a broader range of
securities. Fixed-income portfolios will seek to produce total return by
actively trading portfolio securities. The objective of each portfolio is
fundamental and may only be changed with approval of holders of a majority of
the shares of each portfolio. The achievement of any portfolio's objective
cannot be assured.

RISK FACTORS: Prospective investors in the Fund should consider the following
factors as they apply to each portfolio's allowable investments and policies.
See the Prospectus Glossary for more information on terms printed in bold type:

o    Each portfolio may invest in Repurchase Agreements, which entail a risk of
     loss should the seller default in its obligation to repurchase the security
     which is the subject of the transaction;

o    Each portfolio may participate in a Securities Lending program which
     entails a risk of loss should a borrower fail financially;

o    Fixed-Income Securities will be affected by general changes in interest
     rates resulting in increases or decreases in the value of the obligations
     held by a portfolio. The value of Fixed-Income Securities can be expected
     to vary inversely to changes in prevailing interest rates, i.e., as
     interest rates decline, market value tends to increase and vice versa.
     Certain Fixed Income Securities may be highly sensitive to interest rate
     changes, and highly sensitive to the rate of principal payments (including
     prepayments on underlying mortgage assets). Investments in securities rated
     below investment grade, generally referred to as High Yield, high risk or
     junk bonds, carry a high degree of credit risk and are considered
     speculative by the major rating agencies;

o    Common Stocks are subject to market risks which may cause their prices to
     fluctuate over time. Changes in the value of portfolio securities will not
     necessarily affect cash income derived from these securities, but will
     affect a portfolio's net asset value;

o    Investments in foreign securities involve certain special considerations
     which are not typically associated with investing in U.S. companies.
     Portfolios investing in foreign securities may also engage in foreign
     currency exchange transactions. See Forwards, Futures & Options, and Swaps;

o    Securities purchased on a When-Issued basis may decline or appreciate in
     market value prior to their actual delivery to the portfolio;

o    Each portfolio may invest a portion of its assets in Derivatives including
     Futures & Options. Futures contracts, options and options on futures
     contracts entail certain costs and risks, including imperfect correlation
     between the value of the securities held by the portfolio and the value of
     the particular derivative instrument, and the risk that a portfolio could
     not close out a futures or options position when it would be most
     advantageous to do so; and

o    Each portfolio may invest in certain instruments such as Forwards, certain
     types of Futures & Options, certain types of Mortgage Securities and
     When-Issued Securities which require the portfolio to segregate some or all
     of its cash or liquid securities to cover its obligations pursuant to such
     instruments. As asset segregation reaches certain levels, a portfolio may
     lose flexibility in managing its investments properly, responding to
     shareholder redemption requests, or meeting other obligations and may be
     forced to sell other securities that it wanted to retain or to realize
     unintended gains or losses.
    

- --------------------------------------------------------------------------------
MAS Fund - 4          Terms in bold type are defined in the Prospectus Glossary


<PAGE>



HOW TO INVEST: Investment Class Shares of each portfolio are available to
Shareholders with combined investments of $1,000,000 and Shareholder
Organizations who have a contractual arrangement with the Fund or the Fund's
Distributor, including institutions such as trusts, foundations or
broker-dealers purchasing for the accounts of others. Shares are offered
directly to investors without a sales commission at the net asset value of the
portfolio next determined after receipt of the order. Share purchases may be
made by sending investments directly to the Fund, subject to acceptance by the
Fund. The Fund also offers Institutional and Adviser Class Shares which differ
from the Investment Class Shares in expenses charged and purchase requirements.
Further information relating to the other classes may be obtained by calling
800-354-8185.

   
HOW TO REDEEM: Shares of each portfolio may be redeemed at any time at the net
asset value of the portfolio next determined after receipt of the redemption
request. The redemption price may be more or less than the purchase price. See
Redemption of Shares and Shareholder Services.

THE FUND'S INVESTMENT ADVISER: Miller Anderson & Sherrerd, LLP (the "Adviser")
is a Pennsylvania limited liability partnership founded in 1969, wholly owned by
indirect subsidiaries of Morgan Stanley, Dean Witter, Discover and Co., and is
located at One Tower Bridge, West Conshohocken, PA 19428. The Adviser provides
investment counseling services to employee benefit plans, endowments,
foundations and other institutional investors, and as of December 31, 1997 had
in excess of $58.1 billion in assets under management.

THE FUND'S DISTRIBUTOR: MAS Fund Distribution, Inc. (the "Distributor") provides
distribution services to the Fund.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 5

<PAGE>



             Financial Highlights -- Fiscal Years Ended September 30

        Selected per share data and ratios for a share of each Portfolio
                       outstanding throughout each period

   
     The following information should be read in conjunction with the Fund's
  financial statements which are included in the Annual Report to Shareholders
incorporated by reference in the Statement of Additional Information. The Fund's
financial statements for the year ended September 30, 1997 have been examined by
   Price Waterhouse LLP whose opinion thereon (which was unqualified) is also
      incorporated by reference in the Statement of Additional Information.

   The Investment Class shares of the Domestic Fixed Income Portfolio had not
  commenced operations as of September 30, 1997, therefore, Institutional Class
share financial information is provided to investors for informational purposes
    only and should be referred to as an historical guide to the Portfolio's
   operations and expenses. Past performance does not indicate future results.
 (Data is adjusted to reflect a 2.5 for 1 share split as of August 13, 1993 for 
                      the Domestic Fixed Income Portfolio.)

<TABLE>
<CAPTION>
                                            Net Gains                      Dividend
            Net Asset                       or Losses                    Distributions     Capital Gain                     
            Value-           Net          on Securities     Total from       (net          Distributions                    
            Beginning     Investment      (realized and     Investment     investment      (realized net       Other        
            of Period      Income          unrealized)      Activities       income        capital gains)   Distributions   
- -------------------------------------------------------------------------------------------------------------------------  
<S>           <C>          <C>               <C>              <C>         <C>               <C>                 <C>         
Equity Portfolio (Commencement of Investment Class Operations 04/10/96)
1997          $25.66       $0.34             $8.17            $8.51       ($0.35)           ($4.40)             --         
1996           24.31        0.22              1.24             1.46        (0.11)               --              --         
                                                                                           
International Equity Portfolio (Commencement of Investment Class Operations 04/10/96)      
1997+++       $13.23       $0.23             $2.69            $2.92       ($0.25)           ($0.27)             --         
1996           13.02        0.09              0.12             0.21           --                --              --         
                                                                                           
Mid Cap Value Portfolio (Commencement of Investment Class Operations 05/10/96)             
1997+++       $14.48       $0.01             $8.36            $8.37       ($0.09)           ($1.01)             --        
1996           13.77        0.04              0.67             0.71           --                --              --         
                                                                                           
Value Portfolio (Commencement of Investment Class Operations 05/06/96)                     
1997+++       $15.60       $0.31             $5.75            $6.06       ($0.27)           ($1.03)             --         
1996           14.97        0.12              0.59             0.71        (0.08)               --              --         
                                                                                           

<CAPTION>
                             Net Asset                   Net Assets-      Ratio of      Ratio of                              
                              Value-                       End of         Expenses      Net Income      Portfolio      Average  
               Total          End of          Total        Period        to Average     to Average       Turnover     Commission 
           Distributions      Period         Return**    (thousands)     Net Assets+    Net Assets         Rate        Rate***  
- --------------------------------------------------------------------------------------------------------------------------------
Equity Portfolio (Commencement of Investment Class Operations 04/10/96)
<S>           <C>             <C>             <C>          <C>              <C>           <C>               <C>       <C>    
1997          ($4.75)         $29.42          38.12%       $2,354           0.80%++       1.12%++           85%       $0.0294
1996           (0.11)          25.66           6.02           113           0.75*         1.83*             67         0.0557
              
International Equity Portfolio (Commencement of Investment Class Operations 04/10/96)      
1997+++       ($0.52)         $15.63          22.85%         $631           0.89%++       1.60%++           62%       $0.0035
1996              --           13.23           1.61           235           0.81*         1.81*             78         0.0093
                                                                                           
Mid Cap Value Portfolio (Commencement of Investment Class Operations 05/10/96)             
1997+++       ($1.10)         $21.75          61.05%       $1,238           1.09%++       0.04%++          184%       $0.0467
1996              --           14.48           5.16           127           1.03*++       0.86*++          377         0.0462
                                                                                           
Value Portfolio (Commencement of Investment Class Operations 05/06/96)                     
1997+++       ($1.30)         $20.36          41.01%      $29,847           0.80%++       1.75%++           46%       $0.0577
1996           (0.08)          15.60           4.78         9,244           0.76*         2.05*             53         0.0572
                                                                                           
</TABLE>
    

- --------------------------------------------------------------------------------
MAS Fund - 6           Terms in bold type are defined in the Prospectus Glossary

<PAGE>





             Financial Highlights - Fiscal Years Ended September 30

   
<TABLE>
<CAPTION>
                                            Net Gains                      Dividend
            Net Asset                       or Losses                    Distributions     Capital Gain                     
            Value-           Net          on Securities     Total from       (net          Distributions                    
            Beginning     Investment      (realized and     Investment     investment      (realized net       Other        
            of Period      Income          unrealized)      Activities       income        capital gains)   Distributions   
- -------------------------------------------------------------------------------------------------------------------------  
<S>           <C>          <C>               <C>              <C>         <C>               <C>                 <C>         
Domestic Fixed Income Portfolio (Commencement of Institutional Class Operations 9/30/87)
1997          $10.89       $0.74             $0.33           $1.07        ($0.67)           ($0.02)             --        
1996           11.03        0.56             (0.09)           0.47         (0.57)               --          (0.04)#       
1995            9.87        0.52              0.87            1.39         (0.23)               --                        
1994           11.99        0.94             (1.23)          (0.29)        (0.95)           ($0.73)         (0.15)#       
1993           11.80        0.84              0.66            1.50         (0.78)            (0.53)             --        
1992           11.34        0.87              0.76            1.63         (1.00)            (0.17)             --        
1991           10.26        0.92              1.10            2.02         (0.94)               --              --        
1990           10.90        0.87             (0.45)           0.42         (0.96)            (0.10)             --        
1989           10.78        0.86              0.08            0.94         (0.78)            (0.04)             --        
1988            9.99        0.73              0.52            1.25         (0.45)            (0.01)             --        
                                                                                                            
Fixed Income Portfolio (Commencement of Investment Class Operations 10/15/96)
1997+++       $11.80       $0.75             $0.40           $1.15        ($0.60)           ($0.13)             --        

High Yield Portfolio (Commencement of Investment Class Operations 5/21/96)
1997+++        $9.31       $0.84             $0.88           $1.72        ($0.84)           ($0.03)             --        
1996            9.06        0.31              0.16            0.47         (0.22)               --              --        

Balanced Portfolio (Commencement of Investment Class Operations 04/04/97)
1997          $13.11       $0.30             $2.09           $2.39        ($0.20)               --              --        

Multi-Asset-Class Portfolio (Commencement of Investment Class Operations 6/10/96)
1997+++       $12.27       $0.36             $2.57           $2.93        ($0.49)           ($1.08)             --        
1996           12.17        0.13             $0.08            0.21         (0.11)               --              --        

<CAPTION>
                             Net Asset                   Net Assets-      Ratio of      Ratio of                              
                              Value-                       End of         Expenses      Net Income      Portfolio      Average  
               Total          End of          Total        Period        to Average     to Average       Turnover     Commission 
           Distributions      Period         Return**    (thousands)     Net Assets+    Net Assets         Rate        Rate***  
- --------------------------------------------------------------------------------------------------------------------------------
<S>           <C>            <C>             <C>          <C>               <C>            <C>             <C>       <C>    
Domestic Fixed Income Portfolio (Commencement of Institutional Class Operations 9/30/87)
1997          ($0.69)        $11.27          10.20%      $96,954            0.51%++        6.48%           217%           --
1996           (0.61)         10.89           4.41        95,362            0.52++         5.73            168            --
1995           (0.23)         11.03          14.33        36,147            0.51++         6.80            313            --
1994           (1.83)          9.87          (2.87)       36,521            0.50++         7.65             78            --
1993           (1.31)         11.99          14.08        90,350            0.50           7.15             96            --
1992           (1.17)         11.80          15.41        98,130            0.47           7.67            136            --
1991           (0.94)         11.34          20.99        83,200            0.48           8.18            131            --
1990           (1.06)         10.26           3.90        77,622            0.48           8.35            181            --
1989           (0.82)         10.90           9.14        68,855            0.49           8.24            219            --
1988           (0.46)         10.78          12.63        53,236            0.50           8.62            224            --
                                                                                                        
Fixed Income Portfolio (Commencement of Investment Class Operations 10/15/96)
1997+++       ($0.73)        $12.22          10.07%       $9,527            0.66%*++       6.57%*          179%           --

High Yield Portfolio (Commencement of Investment Class Operations 5/21/96)
1997+++       ($0.87)        $10.16          19.77%      $10,916            0.70%++        8.84%            96%           --
1996           (0.22)          9.31           5.34         5,139            0.62*         11.06*           115            --

Balanced Portfolio (Commencement of Investment Class Operations 04/04/97)
1997          ($0.20)        $15.30          18.40%       $3,943            0.73%*++       3.32%*          145%      $0.0578

Multi-Asset-Class Portfolio (Commencement of Investment Class Operations 6/10/96)
1997+++       ($1.57)        $13.63          26.32%       $5,075            0.96%++        2.85%           141%      $0.0114
1996           (0.11)         12.27           1.75         3,074            0.73*++        3.68*           122        0.0225
</TABLE>
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 7


<PAGE>


   
                        Notes to the Financial Highlights


*    Annualized
**   Total return figures for partial years are not annualized.
***  For fiscal years beginning on or after September 1, 1995, a fund is
     required to disclose the average commission rate per share paid for
     security transactions on which commissions were charged.
#    Represents distribution in excess of net realized gains.
##   Represents distributions in excess of net investment income.
+    For the respective periods ended September 30, the Ratio of Expenses to
     Average Net Assets for the following Portfolios excludes the effect of
     expense offsets. If expense offsets were included, the Ratio of Expenses to
     Average Net Assets would be as follows for the respective periods. Where
     listed as N/A, if the expense offsets were included, the Ratio of Expenses
     to Average Net Assets would not significantly differ.

     Portfolio                      1995              1996           1997
     ---------                      ----              ----           ----
Equity                              --                0.75%*         0.80%
International Equity                --                0.77           0.86
Mid Cap Value                       --                1.03*          1.07
Value                               --                0.75*          0.79
Domestic Fixed Income               0.50%             0.50           0.50
Fixed Income                        --                --             0.65*
High Yield                          --                0.61*          0.69
Balanced                            --                --             0.70*
Multi-Asset-Class                   --                0.73*          0.96
                                                                

++   For the periods indicated, the Adviser voluntarily agreed to waive its
     advisory fees and/or reimburse certain expenses to the extent necessary in
     order to keep Total Operating Expenses actually deducted from portfolio
     assets for the respective portfolios from exceeding voluntary expense
     limitations. For the respective periods ended September 30, the voluntarily
     waived and/or reimbursed expenses totaled the below listed amounts.

               Voluntarily waived and/or reimbursed expenses for:
<TABLE>
<CAPTION>
     Portfolio                           1994         1995           1996            1997
     ---------                           ----         ----           ----            ----
<S>                                      <C>          <C>            <C>             <C> 
Equity                                   --           --             --              1.28%
International Equity                     --           --             --              6.83
Mid Cap Value                            --           --             0.14%*          4.60
Value                                    --           --             --              0.09
Domestic Fixed Income                    0.03%        0.09%          0.01            0.01
Fixed Income                             --           --             --              0.12*
High Yield                               --           --             --              0.22
Multi-Asset-Class                        --           --             0.08*           0.55
</TABLE>
                                                                
+++  Per share amounts for the year ended September 30, 1997, are based on
     average shares outstanding.
    

- --------------------------------------------------------------------------------
MAS Fund - 8          Terms in bold type are defined in the Prospectus Glossary

<PAGE>


   
YIELD AND TOTAL RETURN:

From time to time each portfolio of the Fund advertises its yield and total
return. Both yield and total return figures are based on historical earnings and
are not intended to indicate future performance. The average annual total return
reflects changes in the price of a portfolio's shares and assumes that any
income dividends and/or capital gain distributions made by the portfolio during
the period were reinvested in additional shares of the portfolio. Figures will
be given for one-, five- and ten-year periods ending with the most recent
calendar quarter-end (if applicable), and may be given for other periods as well
(such as from commencement of the portfolio's operations).

The yield of a portfolio is computed by dividing the net investment income per
share (using the average number of shares entitled to receive dividends) earned
during a 30-day period by the closing price per share on the last day of the
period. For the purpose of determining net investment income, the calculation
includes as expenses of the portfolio all recurring fees and any non recurring
charges for the period stated.

The performance of a portfolio may be compared to data prepared by independent
services which monitor the performance of investment companies, data reported in
financial and industry publications, returns of other investment advisers and
mutual funds, and various indices as further described in the Statement of
Additional Information.

The performance of Institutional Class Shares, Investment Class Shares and
Adviser Class Shares differ because of any class specific expenses paid by each
class and the shareholder servicing fees charged to Investment Class Shares and
distribution fees charged to Adviser Class Shares.

The Annual Report to Shareholders of the Fund for the Fund's most recent fiscal
year-end contains additional performance information that includes comparisons
with appropriate indices. The Annual Report is available without charge upon
request by writing to the Fund or calling the Client Services Group at the
telephone number shown on the front cover of this Prospectus.

GENERAL INFORMATION

Suitability: The Fund's portfolios are designed for long-term investors who can
accept the risks entailed in investing in the stock and bond markets, and are
not meant to provide a vehicle for playing short-term swings in the market. The
Fund's portfolios are designed principally for the investments of tax-exempt
fiduciary investors who are entrusted with the responsibility of investing
assets held for the benefit of others. Since such investors are not subject to
Federal income taxes, securities transactions for all portfolios will not be
influenced by the different tax treatment of long-term capital gains, short-term
capital gains, and dividend income under the Internal Revenue Code.
    

Securities Lending: Each portfolio may lend its securities to qualified brokers,
dealers, banks and other financial institutions for the purpose of realizing
additional income. Loans of securities will be collateralized by cash, letters
of credit, or securities issued or guaranteed by the U.S. Government or its
agencies. The collateral will equal at least 100% of the current market value of
the loaned securities. In addition, a portfolio will not loan its portfolio
securities to the extent that greater than one-third of its total assets, at
fair market value, would be committed to loans at that time.

   
Illiquid Securities/Restricted Securities: Each of the portfolios may invest up
to 15% of its net assets (which may invest up to 10% of its net assets) in
securities that are illiquid by virtue of the absence of a readily available
market, or because of legal or contractual restrictions on resale. This policy
does not limit the acquisition of (i) restricted securities eligible for resale
to qualified institutional buyers pursuant to Rule 144A under the Securities Act
of 1933 or (ii) commercial paper issued pursuant to Section 4(2) under the
Securities Act of 1933, that are determined to be liquid in accordance with
guidelines established by the Fund's Board of Trustees.

Turnover: The Adviser manages the portfolios generally without regard to
restrictions on annual turnover. In general, the portfolios will not trade for
short-term profits, but when circumstances warrant, investments may be sold
without regard to the length of time held.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 9

<PAGE>



   
With respect to the fixed income portfolios and the fixed-income portion of the
Balanced and Multi-Asset-Class Portfolios the annual turnover rate will
ordinarily exceed 100% due to changes in portfolio duration, yield curve
strategy or commitments with respect to forward delivery mortgage-backed
securities. For the Balanced and Multi-Asset-Class Portfolios, the annual
turnover rate is not expected to exceed 100% with respect to Equity Securities.

The following portfolios have annual turnover rates of 100% or more: Mid Cap
Value, Fixed Income, Domestic Fixed Income, Balanced and Multi-Asset-Class.
These high rates of annual turnover necessarily result in correspondingly
heavier brokerage and portfolio trading costs which are paid by a portfolio.
Trading in Fixed-Income Securities does not generally involve the payment of
brokerage commissions, but does involve indirect transaction costs. In addition
to portfolio trading costs, higher rates of annual turnover may result in the
realization of capital gains. To the extent net short-term capital gains are
realized, any distributions resulting from such gains are considered ordinary
income for federal income tax purposes. The annual turnover rate for each
portfolio is shown in the Financial Highlights under "Portfolio Turnover Rate."

Cash Equivalents/Temporary Defensive Investing: Although each portfolio intends
to remain substantially fully invested, a small percentage of a portfolio's
assets is generally held in the form of Cash Equivalents in order to meet
redemption requests and otherwise manage the daily affairs of each portfolio. In
addition, any portfolio may, when the Adviser deems that market conditions are
such that a temporary defensive approach is desirable, invest in Cash
Equivalents or the Fixed-Income Securities listed for that portfolio without
limit. In addition, the Adviser may, for temporary defensive purposes, increase
or decrease the average weighted maturity or duration of any fixed-income
portfolio without regard to that portfolio's usual average weighted maturity.
    

Concentration: Concentration is defined as investment of 25% or more of a
portfolio's total assets in the securities of issuers operating in any one
industry. Except as provided in a portfolio's specific investment policies, or
as detailed in Investment Limitations, a portfolio will not concentrate
investments in any one industry.

   
Investment Limitations: Each portfolio is subject to certain limitations
designed to reduce its exposure to specific situations. Some of these
limitations are:

(a) with respect to 75% of its assets, a portfolio will not purchase securities
of any issuer if, as a result, more than 5% of the portfolio's total assets
taken at market value would be invested in the securities of any single issuer
except that this restriction does not apply to securities issued or guaranteed
by the U.S. Government or its agencies or instrumentalities; and

(b) with respect to 75% of its assets, a portfolio will not purchase a security
if, as a result, the portfolio would hold more than 10% of the outstanding
voting securities of any issuer.

Limitations (a) and (b), and certain other limitations described in the
Statement of Additional Information are fundamental and may be changed only with
the approval of the holders of a majority of the shares of the portfolios. Other
investment limitations described here and in the Statement of Additional
Information are not fundamental policies; meaning that the Board of Trustees may
change them without shareholder approval. If a percentage limitation on
investment or utilization of assets as set forth in this prospectus or the
Statement of Additional Information is adhered to at the time an investment is
made, a later change in percentage resulting from changes in the value or total
cost of the portfolios' assets will not be considered a violation of the
restriction, and the sale of securities will not be required.
    

- --------------------------------------------------------------------------------
MAS Fund - 10         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



Equity Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing primarily in
                         dividend-paying common stocks of companies which are
                         deemed by the Adviser to demonstrate long-term earnings
                         growth that is greater than the economy in general and
                         greater than the expected rate of inflation.

   
Approach:                The investment process is designed to capture value by
                         identifying stocks that offer low but rising
                         expectations. Equity valuations reflect the level of
                         market expectations for companies, while
                         earnings-estimate revision data indicate the direction
                         of changes in expectations. In addition, the Adviser
                         diversifies across sectors to preserve return while
                         reducing risk; thus, the best values within each sector
                         of the market are sought. A group of senior portfolio
                         managers invests equal portions of the portfolio using
                         a disciplined approach to stock selection supported by
                         fundamental research analysts. Each manager makes his
                         or her own buy, sell and sector-allocation decisions.
                         Overall sector allocation is reviewed regularly to
                         preserve the benefits of diversification.
    

Policies:                Generally at least 65% invested in Equity Securities 
                         Up to 5% invested in Foreign Equities (excluding ADRs).
                         Derivatives may be used to pursue portfolio strategy.

Capitalization Range:    Generally greater than $1 billion

   
<TABLE>
<S>                      <C>                      <C>                           <C>                           <C>  
Allowable Investments:   ADRs                     Corporates                    Futures & Options             Swaps          
                         Agencies                 Foreign  Bonds                Investment Companies          U.S. Governments
                         Cash Equivalents         Foreign Currency              Preferred Stock               Warrants
                         Common Stocks            Foreign Equities              Repurchase Agreements         When Issued Securities
                         Convertibles             Forwards                      Rights                        Zero Coupons
    
</TABLE>

Comparative Index:       S&P 500 Index

Strategies:              Core Equity Investing

   
Portfolio
Management Team:         Arden C. Armstrong,  James J. Jolinger,  Nicholas J.
                         Kovich, Brian Kramp, Robert J. Marcin and Gary G.
                         Schlarbaum
    

- --------------------------------------------------------------------------------


   
International Equity Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in common stocks of
                         companies based outside of the U.S.
    

Approach:                The Adviser evaluates both short-term and long-term
                         international economic trends and the relative
                         attractiveness of non-U.S. equity markets and
                         individual securities.

Policies:                Generally at least 65% invested in Foreign Equities of
                         issuers in at least 3 countries other than the U.S.
                         Derivatives may be used to pursue portfolio strategy.
<TABLE>
<S>                      <C>                 <C>                                <C>                           <C>  
   
Allowable Investments:   ADRs                Eastern European Issuers           Investment Companies          Structured Notes
                         Agencies            Emerging Markets Issuers           Investment Funds              Swaps
                         Brady Bonds         Foreign Bonds                      Loan Participations           U.S. Governments
                         Cash Equivalents    Foreign Currency                   Preferred Stock               Warrants
                         Common Stocks       Foreign Equities                   Repurchase Agreements         When Issued Securities
                         Convertibles        Forwards                           Rights                        Zero Coupons
                         Corporates          Futures & Options                  Structured Investments
</TABLE>
    

Comparative Index:       MSCI World Ex-U.S. Index

   
Strategies:              International Equity Investing
                         Emerging Markets Investing
                         Foreign Investing

Portfolio
Management Team:         Hassan Elmasry and Horacio A. Valerias
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund -11


<PAGE>



Mid Cap Value Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in common stocks with
                         equity capitalizations in the range of the companies
                         represented in the S&P MidCap 400 Index which are
                         deemed by the Adviser to be relatively undervalued
                         based on certain proprietary measures of value. The
                         Portfolio will typically exhibit a lower price/earnings
                         value ratio than the S&P MidCap 400 Index.

   
Approach:                The Adviser selects common stocks which are deemed to
                         be undervalued at the time of purchase, based on
                         proprietary measures of value. The portfolio will be
                         structured taking into account the economic sector
                         weights of the S&P MidCap 400 Index, with sector
                         weights normally being within 5% of the sector weights
                         of the Index.

Policies:                Generally at least 65% invested in Equity Securities of
                         mid-cap companies, which are deemed to be undervalued.
                         Up to 5% invested in Foreign Equities (excluding ADRs).
                         Derivatives may be used to pursue portfolio strategy.
    

Capitalization Range:    Generally matching the S&P MidCap 400 Index (currently 
                         $500 million to $6 billion).

<TABLE>
<S>                      <C>                 <C>                 <C>                         <C>    
   
Allowable Investments:   ADRs                Corporates          Futures & Options           Swaps
                         Agencies            Foreign Bonds       Investment Companies        U.S. Governments
                         Cash Equivalents    Foreign Currency    Preferred Stock             Warrants
                         Common Stocks       Foreign Equities    Repurchase Agreements       When Issued Securities          
                         Convertibles        Forwards            Rights                      Zero Coupons
</TABLE>
    

Comparative Index:       S&P MidCap 400 Index

Strategies:              Value Stock Investing

   
Portfolio
Management Team:         Bradley S. Daniels, William B. Gerlach, Chris Leavy and
                         Gary G. Schlarbaum
    

- --------------------------------------------------------------------------------
MAS Fund - 12         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
Value Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in common stocks with
                         equity capitalizations usually greater than $300
                         million which are deemed by the Adviser to be
                         relatively undervalued, based on various measures such
                         as price/earnings ratios and price/book ratios. While
                         capital return will be emphasized somewhat more than
                         income return, the portfolio's total return will
                         consist of both capital and income returns. It is
                         expected that income return will be higher than that of
                         the Equity Portfolio because stocks which are deemed to
                         be undervalued in the marketplace have, under most
                         market conditions, provided higher dividend income
                         returns than stocks which are deemed to have long-term
                         earnings growth potential which normally sell at higher
                         price/earnings ratios.
    

Approach:                The Adviser selects common stocks which are deemed to
                         be undervalued relative to the stock market in general
                         as measured by the Standard & Poor's 500 Index, based
                         on the value measures such as price/earnings ratios and
                         price/book ratios, as well as fundamental research.

   
Policies:                Generally at least 65% invested in Equity Securities,
                         which are deemed to be undervalued.
                         Up to 5% invested in Foreign Equities (excluding ADRs).
                         Derivatives may be used to pursue portfolio strategy.
    

Capitalization Range:    Generally greater than $300 million

<TABLE>
<S>                      <C>                 <C>                 <C>                          <C>   
   
Allowable Investments:   ADRs                Corporates          Futures & Options            Swaps
                         Agencies            Foreign Bonds       Investment Companies         U.S. Governments
                         Cash Equivalents    Foreign Currency    Preferred Stock              Warrants
                         Common Stocks       Foreign Equities    Repurchase Agreements        When Issued Securities 
                         Convertibles        Forwards            Rights                       Zero Coupons
</TABLE>
    

Comparative Index:       S&P 500 Index

Strategy:                Value Stock Investing

   
Portfolio
Management Team:         Richard M. Behler, Nicholas J. Kovich, Brian Kramp and 
                         Robert J. Marcin
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 13


<PAGE>


   
Domestic Fixed Income Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in a diversified
                         portfolio of U.S. Government securities and other
                         investment grade fixed-income securities of domestic
                         issuers.

Approach:                The Adviser actively manages the maturity and duration
                         structure of the portfolio in anticipation of long-term
                         trends in interest rates and inflation. Investments are
                         diversified among a wide variety of U.S. Fixed-Income
                         Securities in all market sectors.

Policies:                Generally at least 65% invested in Fixed-Income 
                         Securities. 100% invested in domestic issuers.
                         May invest  greater than 50% in Mortgage Securities.
                         Derivatives may be used to pursue portfolio strategy.

Quality Specifications:  80% of Fixed-Income Securities rated A or higher (or 
                         its equivalent) 
                         May invest up to 20% in  Fixed-Income Securities rated 
                         BBB (or its equivalent).

Maturity and Duration:   Average weighted maturity generally greater than 5
                         years.

<TABLE>
<S>                      <C>                 <C>                      <C>                           <C>   
Allowable Investments:   Agencies            Corporates               Mortgage Securities           Structured Notes
                         Asset-Backeds       Floaters                 Municipals                    Swaps 
                         Cash Equivalents    Futures & Options        Preferred Stock               U.S. Governments 
                         CMOs                Inverse Floaters         Repurchase Agreements         When Issued Securities 
                         Convertibles        Investment Companies     SMBS                          Zero Coupons
</TABLE>

Comparative Index:       Salomon Broad Investment Grade 
                         Lehman Brothers Aggregate

Strategies:              Maturity and Duration Management 
                         Value Investing 
                         Mortgage Investing

Portfolio
Management Team          Thomas L. Bennett, Kenneth B. Dunn and Richard B. 
                         Worley
    

- --------------------------------------------------------------------------------
MAS Fund - 14         Terms in bold type are defined in the Prospectus Glossary


<PAGE>



Fixed Income Portfolio

   
Objective:               To achieve above-average total return over a market 
                         cycle of three to five years, consistent with 
                         reasonable risk, by investing in a diversified 
                         portfolio of U.S. Government securities, corporate 
                         bonds (including bonds rated below investment grade, 
                         commonly referred to as junk bonds), foreign fixed-
                         income securities and mortgage-backed securities of 
                         domestic issuers and other fixed-income securities. The
                         portfolio's average weighted maturity will ordinarily 
                         be greater than five years.

Approach:                The Adviser actively manages the maturity and duration
                         structure of the portfolio in anticipation of long-term
                         trends in interest rates and inflation. Investments are
                         diversified among a wide variety of Fixed-Income
                         Securities in all market sectors.
    

Policies:                Generally at least 65% invested in Fixed-Income
                         Securities.
                         May invest greater than 50% in Mortgage Securities.
                         Derivatives may be used to pursue portfolio strategy.

Quality Specifications:  80% Investment Grade Securities.
                         Up to 20% High Yield.

Maturity and Duration:   Average weighted maturity generally greater than 5 
                         years

<TABLE>
<S>                      <C>                 <C>                      <C>                                <C>    
   
Allowable Investments:   Agencies            Floaters                 Investment Companies               Structured Notes
                         Asset-Backeds       Foreign Bonds            Loan Participations                Swaps
                         Brady Bonds         Foreign Currency         Mortgage Securities                U.S. Governments
                         Cash Equivalents    Forwards                 Municipals                         When Issued Securities
                         CMOs                Futures & Options        Preferred Stock                    Yankees
                         Convertibles        High Yield               Repurchase Agreements              Zero Coupons 
                         Corporates          Inverse Floaters         SMBS
</TABLE>
    

Comparative Index:       Salomon Broad Investment Grade
                         Lehman Brothers Aggregate

   
Strategies:              Maturity and Duration Management 
                         Value Investing 
                         Mortgage Investing 
                         High Yield Investing
                         Foreign Investing
                         Foreign Fixed Income Investing

Portfolio
Management Team:         Thomas L. Bennett, Kenneth B. Dunn and Richard B. 
                         Worley
    
- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 15


<PAGE>



High Yield Portfolio

   
Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in high yielding
                         corporate fixed-income securities (including bonds
                         rated below investment grade, commonly referred to as
                         junk bonds). The portfolio may also invest in U.S.
                         Government securities, mortgage-backed securities,
                         investment grade corporate bonds and in short-term
                         fixed-income securities, such as certificates of
                         deposit, treasury bills, and commercial paper. The
                         portfolio expects to achieve its objective by earning a
                         high rate of current income, although the portfolio may
                         seek capital growth opportunities when consistent with
                         its objective. The portfolio's average weighted
                         maturity will ordinarily be greater than five years.
    

Approach:                The Adviser uses equity and fixed-income valuation
                         techniques and analyses of economic and industry trends
                         to determine portfolio structure. Individual securities
                         are selected, and monitored, by fixed-income portfolio
                         managers who specialize in corporate bonds and use
                         in-depth financial analysis to uncover opportunities in
                         undervalued issues.

   
Policies:                Generally at least 65% invested in High Yield
                         securities (commonly referred to as junk bonds)
                         Derivatives may be used to pursue portfolio strategy
    

Quality Specifications:  None

Maturity and Duration:   Average weighted maturity generally greater than 5
                         years.

<TABLE>
<S>                      <C>                          <C>                          <C>                        <C>    
   
Allowable Investments:   Agencies                     Emerging Markets Issuers     Inverse Floaters           Structured Notes    
                         Asset-Backeds                Floaters                     Investment Companies       Swaps
                         Brady Bonds                  Foreign Bonds                Loan Participations        U.S. Governments
                         Cash Equivalents             Foreign Currency             Mortgage Securities        When Issued Securities
                         CMOs                         Foreign Equities             Municipals                 Yankees
                         Convertibles                 Forwards                     Preferred Stock            Zero Coupons
                         Corporates                   Futures & Options            Repurchase Agreements      
                         Eastern European Issuers     High Yield                   SMBS
</TABLE>
    
                                                  
Comparative              Index: Salomon High Yield Market Index

   
Strategies:              High Yield Investing
                         Maturity and Duration Management
                         Value Investing 
                         Mortgage Investing
                         Foreign Investing
                         Foreign Fixed Income Investing
                         Emerging Markets Investing

Portfolio
Management Team:         Robert E. Angevine, Thomas L. Bennett  and Stephen F. 
                         Esser
    

- --------------------------------------------------------------------------------
MAS Fund - 16          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



Balanced Portfolio

Objective:               To achieve above average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in a diversified
                         portfolio of common stocks and fixed-income securities.
                         When the Adviser judges the relative outlook for the
                         equity and fixed-income markets to be neutral the
                         portfolio will be invested 60% in common stocks and 40%
                         in fixed-income securities. The asset mix may be
                         changed, however, with common stocks ordinarily
                         representing between 45% and 75% of the total
                         investment. The average weighted maturity of the
                         fixed-income portion of the portfolio will ordinarily
                         be greater than five years.

Approach:                The Adviser determines investment strategies for the
                         equity and fixed-income portions of the portfolio
                         separately and then determines the mix of those
                         strategies expected to maximize the return available
                         from both the stock and bond markets. Strategic
                         judgments on the equity/fixed-income asset mix are
                         based on valuation disciplines and tools for analysis
                         developed by the Adviser over its twenty-five year
                         history of managing balanced accounts.

Policies:                Generally 45% to 75% invested in Equity Securities.
                         Up to 25% invested in Foreign Bonds and/or Foreign
                         Equities (excluding ADRs).
                         Up to 10% invested in Brady Bonds 
                         At least 25% invested in senior Fixed-Income 
                         Securities.
                         Derivatives may be used to pursue portfolio strategy.

Equity Capitalization:   Generally greater than $1 billion

Quality Specifications:  None

Maturity and Duration:   Average weighted maturity generally greater than 5 
                         years

<TABLE>
<S>                      <C>                 <C>                           <C>                           <C>   
   
Allowable Investments:   ADRs                Eastern European Issuers      Investment Companies          SMBS
                         Agencies            Floaters                      Investment Funds              Structured Notes
                         Asset-Backeds       Foreign Bonds                 Loan Participations           Swaps
                         Brady Bonds         Foreign Currency              Mortgage Securities           U.S. Governments
                         Cash Equivalents    Foreign Equities              Municipals                    Warrants
                         CMOs                Forwards                      Preferred Stock               When Issued Securities
                         Common Stocks       Futures & Options             Repurchase Agreements         Yankees
                         Convertibles        High Yield                    Rights                        Zero Coupons
                         Corporates          Inverse Floaters    
</TABLE>

Comparative Index:       A weighted blend of quarterly returns compiled by the
                         Adviser using:
                            60% S&P 500 Index
                            40% Salomon Broad Investment Grade Index

Strategies:              Asset Allocation Management 
                         Core Equity Investing 
                         Fixed Income Management and Asset Allocation
                         Maturity and Duration Management 
                         Value Investing 
                         Mortgage Investing
                         High Yield Investing
                         Foreign Investing
                         Foreign Fixed Income Investing

Portfolio
Management Team:         Thomas L. Bennett, Gary G. Schlarbaum, Horacio A.
                         Valeiras and Richard B. Worley
    
- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 17


<PAGE>



Multi-Asset-Class Portfolio

   
Objective:               To achieve above average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in a diversified
                         portfolio of common stocks and fixed-income securities
                         of U.S. and foreign issuers.
    

Approach:                The Adviser determines the mix of investments in
                         domestic and foreign equity and fixed-income and high
                         yield securities expected to maximize available total
                         return. Strategic judgments on the asset mix are based
                         on valuation disciplines and tools for analysis which
                         have been developed by the Adviser to compare the
                         relative potential returns and risks of global stock
                         and bond markets.

Policies:                Generally at least 65% invested in issuers located in
                         at least 3 countries, including the U.S. 
                         Derivatives may be used to pursue portfolio strategy.

Domestic Equity
Capitalization:          Generally greater than $1 billion

Quality Specifications:  None

Maturity and Duration:   Average weighted maturity generally greater than 5 
                         years

<TABLE>
<S>                      <C>                 <C>                              <C>                           <C>    
   
Allowable Investments:   ADRs                Eastern European Issuers         Inverse Floaters              SMBS
                         Agencies            Emerging Markets Issuers         Investment Companies          Structured Investments
                         Asset-Backeds       Floaters                         Investment Funds              Structured Notes
                         Brady Bonds         Foreign Bonds                    Loan Participations           Swaps     
                         Cash Equivalents    Foreign Currency                 Mortgage Securities           U.S. Governments
                         CMOs                Foreign Equities                 Municipals                    Warrants 
                         Common Stocks       Forwards                         Preferred Stock               When Issued Securities
                         Convertibles        Futures & Options                Repurchase Agreements         Yankees
                         Corporates          High Yield                       Rights                        Zero Coupons
</TABLE>

Comparative Index:       A weighted blend of quarterly returns compiled by the
                         Adviser using:
                            50% S&P 500 Index
                            14% EAFE-GDP Weighted Index
                            24% Salomon Broad Investment Grade Index
                            6% Salomon World Government Bond Index Ex U.S.
                            6% Salomon High Yield Market Index

Strategies:              Asset Allocation Management 
                         Fixed Income Management and Asset Allocation 
                         Maturity and Duration Management 
                         Value Investing
                         Foreign Investing
                         Core Equity Investing 
                         International Equity Investing 
                         Emerging Markets Investing 
                         High Yield Investing
                         Foreign Fixed Income Investing
                         Mortgage Investing

Portfolio
Management Team:         Thomas L. Bennett, J. David Germany, Gary G. 
                         Schlarbaum, Horacio A. Valeiras and Richard B. Worley
    

- --------------------------------------------------------------------------------
MAS Fund - 18         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



                               PROSPECTUS GLOSSARY

             CHARACTERISTICS AND RISKS OF STRATEGIES AND INVESTMENTS


STRATEGIES

   
Asset Allocation Management: The Adviser's approach to asset allocation
management is to determine investment strategies for each asset class in a
portfolio separately, and then determine the mix of those strategies expected to
maximize the return available from each market. Strategic judgments on the mix
among asset classes are based on valuation disciplines and tools for analysis
which have been developed over the Adviser's twenty-five year history of
managing balanced accounts.

Tactical asset-allocation shifts are based on comparisons of prospective risks,
returns, and the likely risk-reducing benefits derived from combining different
asset classes into a single portfolio. Experienced teams of equity, fixed-
income, and international investment professionals manage the investments in
each asset class.

Core Equity Investing: The Adviser's "core" or primary equity strategy
emphasizes common stocks of large companies, with targeted investments in small
company stocks that promise special growth opportunities. Depending on the
Adviser's outlook for the economy and different market sectors, the mix between
value stocks and growth stocks will change.
    

Emerging Markets Investing: The Adviser's approach to emerging markets investing
is based on the Adviser's evaluation of both short-term and long-term
international economic trends and the relative attractiveness of emerging
markets and individual emerging market securities.

   
As used in this Prospectus, emerging markets describes any country which is
generally considered to be an emerging or developing country by the
international financial community such as the International Bank for
Reconstruction and Development (more commonly known as the World Bank) and the
International Finance Corporation. There are currently over 130 countries which
are generally considered to be emerging or developing countries by the
international financial community, approximately 40 of which currently have
stock markets. Emerging markets can include every nation in the world except the
United States, Canada, Japan, Australia, New Zealand and most nations located in
Western Europe.

Currently, investing in many emerging markets is either not feasible or very
costly, or may involve unacceptable political risks. Other special risks include
the possible increased likelihood of expropriation or the return to power of a
communist regime which would institute policies to expropriate, nationalize or
otherwise confiscate investments. A portfolio will focus its investments on
those emerging market countries in which the Adviser believes the potential for
market appreciation outweighs these risks and the cost of investment. Investing
in emerging markets also involves an extra degree of custodial and/or market
risk, especially where the securities purchased are not traded on an official
exchange or where ownership records regarding the securities are maintained by
an unregulated entity (or even the issuer itself).

Fixed Income Management and Asset Allocation: Within the Balanced and
Multi-Asset-Class Portfolios, the Adviser selects Fixed-Income Securities not
only on the basis of judgments regarding Maturity and Duration Management and
Value Investing, but also on the basis of the value offered by various segments
of the Fixed-Income Securities market relative to Cash Equivalents and Equity
Securities. In this context, the Adviser may find that certain segments of the
Fixed-Income Securities market offer more or less attractive relative value when
compared to Equity Securities than when compared to other Fixed-Income
Securities.

For example, in a given interest rate environment, Equity Securities may be
judged to be fairly valued when compared to intermediate duration Fixed-Income
Securities, but overvalued compared to long duration Fixed-Income Securities.
Consequently, while a portfolio investing only in Fixed-Income Securities may
not emphasize long duration assets to the same extent, the fixed-income portion
of a balanced investment may invest a percentage of its assets in long duration
bonds on the basis of their valuation relative to Equity Securities.
    
- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 19


<PAGE>


Foreign Fixed Income Investing: The Adviser invests in Foreign Bonds and other
Fixed-Income Securities denominated in foreign currencies, where, in the opinion
of the Adviser, the combination of current yield and currency value offer
attractive expected returns. When the total return opportunities in a foreign
bond market appear attractive in local currency terms, but where in the
Adviser's judgment unacceptable currency risk exists, currency Futures &
Options, Forwards and Swaps may be used to hedge the currency risk.

Foreign Investing: Investors should recognize that investing in Foreign Bonds
and Foreign Equities involves certain special considerations which are not
typically associated with investing in domestic securities.

   
As non-U.S. companies are not generally subject to uniform accounting, auditing
and financial reporting standards and practices comparable to those applicable
to U.S. companies, there may be less publicly available information about
certain foreign securities than about U.S. securities. Foreign Bonds and Foreign
Equities may be less liquid and more volatile than securities of comparable U.S.
companies. There is generally less government supervision and regulation of
stock exchanges, brokers and listed companies than in the U.S. With respect to
certain foreign countries, there is the possibility of expropriation or
confiscatory taxation, political or social instability, or diplomatic
developments which could affect U.S. investments in those countries.
Additionally, there may be difficulty in obtaining and enforcing judgments
against foreign issuers.

Since Foreign Bonds and Foreign Equities may be denominated in foreign
currencies, and since a portfolio may temporarily hold uninvested reserves in
bank deposits of foreign currencies prior to reinvestment or conversion to U.S.
dollars, a portfolio may be affected favorably or unfavorably by changes in
currency rates and in exchange control regulations, and may incur costs in
connection with conversions between various currencies.

Although a portfolio will endeavor to achieve the most favorable execution costs
in its portfolio transactions in foreign securities, fixed commissions on many
foreign stock exchanges are generally higher than negotiated commissions on U.S.
exchanges. In addition, it is expected that the expenses for custodial
arrangements of a portfolio's foreign securities will be greater than the
expenses for the custodial arrangements for handling U.S. securities of equal
value. Certain foreign governments levy withholding taxes against dividend and
interest income. Although in some countries a portion of these taxes is
recoverable, the non-recovered portion of foreign withholding taxes will reduce
the income a portfolio receives from the companies comprising the portfolio's
investments.

High Yield Investing: Involves investing in High Yield securities based on the
Adviser's analysis of economic and industry trends and individual security
characteristics. The Adviser conducts credit analysis for each security
considered for investment to evaluate its attractiveness relative to its risk. A
high level of diversification is also maintained to limit credit exposure to
individual issuers.

To the extent a portfolio invests in High Yield securities it will be exposed to
a substantial degree of credit risk. Lower-rated bonds are considered
speculative by traditional investment standards. High Yield securities may be
issued as a consequence of corporate restructuring or similar events. Also, High
Yield securities are often issued by smaller, less credit worthy companies, or
by highly leveraged (indebted) firms, which are generally less able than more
established or less leveraged firms to make scheduled payments of interest and
principal. The risks posed by securities issued under such circumstances are
substantial.

The market for High Yield securities is still relatively new. Because of this, a
long-term track record for bond default rates does not exist. In addition, the
secondary market for High Yield securities is generally less liquid than that
for investment grade corporate securities. In periods of reduced market
liquidity, high yield bond prices may become more volatile, and both the high
yield market and a portfolio may experience sudden and substantial price
declines. This lower liquidity might have an effect on a portfolio's ability to
value or dispose of such securities. Also, there may be significant disparities
in the prices quoted for High Yield securities by various dealers. Under such
conditions, a portfolio may find it difficult to value its securities
accurately. A portfolio may also be forced to sell securities at a significant
loss in order to meet shareholder redemptions. These factors add to the risks
associated with investing in High Yield securities.
    

- --------------------------------------------------------------------------------
MAS Fund - 20         Terms in bold type are defined in the Prospectus Glossary


<PAGE>


   
High yield bonds may also present risks based on payment expectations. For
example, high yield bonds may contain redemption or call provisions. If an
issuer exercises these provisions in a declining interest rate market, a
portfolio would have to replace the security with a lower yielding security,
resulting in a decreased return for investors.

Certain types of high yield bonds are non-income paying securities. For example,
Zero Coupons pay interest only at maturity and payment-in-kind bonds pay
interest in the form of additional securities. Payment in the form of additional
securities, or interest income recognized through discount accretion, will,
however, be treated as ordinary income which will be distributed to shareholders
even though the portfolio does not receive periodic cash flow from these
investments.

The table below provides a summary of ratings assigned to all U.S. and foreign
debt holdings of those portfolios with more than 5% invested in High Yield
securities as of September 30, 1997 (not including money market instruments).
These figures are dollar-weighted averages of month-end portfolio holdings and
do not necessarily indicate a portfolio's current or future debt holdings.
Portfolios whose debt holdings total less than 100% also invest in Equity
Securities.

          High Yield Porfolio                     Multi-Asset-Class Portfolio
QUALITY                                      QUALITY   
AAA                            9.06%         AAA                          26.22%
AA                             0.05          AA                            2.32
A                              0.19          A                             1.09
BBB                            6.09          BBB                           2.09
BB                            42.51          BB                            4.64
B                             35.48          B                             6.02
CCC                            0.96          CCC                           0.35
NOT RATED                                    NOT RATED
      BB             0.91*                         BB           0.06*
      B              2.52*                         B            0.22*
      NR             2.23                          NR           0.17
      TOTAL NR                 5.66                TOTAL NR                0.45
TOTAL                        100.00%         TOTAL                        43.18%

*The Adviser believes that these non-rated securities are equivalent in quality 
 to the rating indicated.
    

International Equity Investing: The Adviser's approach to international equity
investing is based on its evaluation of both short-term and long-term
international economic trends and the relative attractiveness of non-U.S. equity
markets and individual securities.

   
The Adviser considers fundamental investment characteristics, the principles of
valuation and diversification, and a relatively long-term investment time
horizon. Since liquidity will also be a consideration, emphasis will likely be
influenced by the relative market capitalizations of different non-U.S. stock
markets and individual securities. Portfolios seek to diversify investments
broadly among both developed and newly industrializing foreign countries. Where
appropriate, a portfolio may also invest in regulated Investment Companies or
Investment Funds which invest in such countries to the extent allowed by
applicable law.
    

Maturity and Duration Management: One of two primary components of the Adviser's
fixed-income investment strategy is maturity and duration management. The
maturity and duration structure of a portfolio investing in Fixed-Income
Securities is actively managed in anticipation of cyclical interest rate
changes. Adjustments are not made in an effort to capture short-term, day-to-day
movements in the market, but instead are implemented in anticipation of longer
term shifts in the levels of interest rates. Adjustments made to shorten
portfolio maturity and duration are made to limit capital losses during periods
when interest rates are expected to rise. Conversely, adjustments made to
lengthen maturity are intended to produce capital appreciation in periods when
interest rates are expected to fall. The foundation for maturity and duration
strategy lies in analysis of the U.S. and global economies, focusing on levels
of real interest rates, monetary and fiscal policy actions, and cyclical
indicators. See Value Investing for a description of the second primary
component of the Adviser's fixed-income strategy.

About Maturity and Duration: Most debt obligations provide interest (coupon)
payments in addition to a final (par) payment at maturity. Some obligations also
have call provisions. Depending on the relative magnitude of these pay-

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 21


<PAGE>



ments and the nature of the call provisions, the market values of debt
obligations may respond differently to changes in the level and structure of
interest rates. Traditionally, a debt security's term-to-maturity has been used
as a proxy for the sensitivity of the security's price to changes in interest
rates (which is the interest rate risk or volatility of the security). However,
term-to-maturity measures only the time until a debt security provides its final
payment, taking no account of the pattern of the security's payments prior to
maturity.

   
Duration is a measure of the expected life of a Fixed-Income Security that was
developed as a more precise alternative to the concept of term-to-maturity.
Duration incorporates a bond's yield, coupon interest payments, final maturity
and call features into one measure. Duration is one of the fundamental tools
used by the Adviser in the selection of Fixed-Income Securities. Duration is a
measure of the expected life of a Fixed-Income Security on a present value
basis. Duration takes the length of the time intervals between the present time
and the time that the interest and principal payments are scheduled or, in the
case of a callable bond, expected to be received, and weights them by the
present values of the cash to be received at each future point in time. For any
Fixed-Income Security with interest payments occurring prior to the payment of
principal, duration is always less than maturity. In general, all other factors
being the same, the lower the stated or coupon rate of interest of a
Fixed-Income Security, the longer the duration of the security; conversely, the
higher the stated or coupon rate of interest of a Fixed-Income Security, the
shorter the duration of the security.

There are some situations where even the standard duration calculation does not
properly reflect the interest rate exposure of a security. For example, floating
and variable rate securities often have final maturities of ten or more years;
however, their interest rate exposure corresponds to the frequency of the coupon
reset. Another example where the interest rate exposure is not properly captured
by duration is the case of mortgage pass-through securities. The stated final
maturity of such securities is generally 30 years, but current prepayment rates
are more critical in determining the securities' interest rate exposure. In
these and other similar situations, the Adviser will use sophisticated
analytical techniques that incorporate the economic life of a security into the
determination of its interest rate exposure.

Mortgage Investing: At times it is anticipated that greater than 50% of a
fixed-income portfolio's assets may be invested in mortgage-related securities.
These include Mortgage Securities which represent interests in pools of mortgage
loans made by lenders such as commercial banks, savings and loan associations,
mortage bankers and others. The pools are assembled by various organizations,
including the Government National Mortgage Association (GNMA), Federal Home Loan
Mortgage Corporation (FHLMC), Fannie Mae, other government agencies, and private
issuers. It is expected that a portfolio's primary emphasis will be in Mortgage
Securities issued by the various government-related organizations. However, a
portfolio may invest, without limit, in Mortgage Securities issued by private
issuers when the Adviser deems that the quality of the investment, the quality
of the issuer, and market conditions warrant such investments. Securities issued
by private issuers will be rated investment grade by Moody's or Standard &
Poor's or be deemed by the Adviser to be of comparable investment quality.

Value Investing: One of two primary components of the Adviser's fixed-income
strategy is value investing, whereby the Adviser seeks to identify undervalued
sectors and securities through analysis of credit quality, option
characteristics and liquidity. Quantitative models are used in conjunction with
judgment and experience to evaluate and select securities with embedded put or
call options which are attractive on a risk- and option-adjusted basis.
Successful value investing will permit a portfolio to benefit from the price
appreciation of individual securities during periods when interest rates are
unchanged. See Maturity and Duration Management for a description of the other
key component of the Adviser's fixed-income investment strategy.

Value Stock Investing: Emphasizes Common Stocks which are deemed by the Adviser
to be undervalued relative to the stock market in general as measured by the
appropriate market index, based on value measures such as price/earnings ratios
and price/book ratios. Value stocks are generally dividend paying Common Stocks.
However, non-dividend paying stocks may also be selected for their value
characteristics.
    

INVESTMENTS

   
Each portfolio may invest in the securities defined below in accordance with
their listing of Allowable Investments and any quality or policy constraints.
    

- --------------------------------------------------------------------------------
MAS Fund - 22         Terms in bold type are defined in the Prospectus Glossary

<PAGE>


   
ADRs--American Depository Receipts: are dollar-denominated securities which are
listed and traded in the United States, but which represent claims to shares of
foreign stocks. ADRs may be either sponsored or unsponsored. Unsponsored ADR
facilities typically provide less information to ADR holders. ADRs also include
American Depository Shares.

Agencies: are securities which are not guaranteed by the U.S. Government, but
which are issued, sponsored or guaranteed by a federal agency or federally
sponsored agency such as the Student Loan Marketing Association or any of
several other agencies.

Asset-Backeds: are securities collateralized by shorter term loans such as
automobile loans, home equity loans, computer leases, or credit card
receivables. The payments from the collateral are passed through to the security
holder. The collateral behind asset-backed securities tends to have prepayment
rates that do not vary with interest rates. In addition the short-term nature of
the loans reduces the impact of any change in prepayment level. Due to
amortization, the average life for these securities is also the conventional
proxy for maturity.
    

Possible Risks: Due to the possibility that prepayments (on automobile loans and
other collateral) will alter the cash flow on asset-backed securities, it is not
possible to determine in advance the actual final maturity date or average life.
Faster prepayment will shorten the average life and slower prepayments will
lengthen it. However, it is possible to determine what the range of that
movement could be and to calculate the effect that it will have on the price of
the security. In selecting these securities, the Adviser will look for those
securities that offer a higher yield to compensate for any variation in average
maturity.

   
Brady Bonds: are debt obligations which are created through the exchange of
existing commercial bank loans to foreign entities for new obligations in
connection with debt restructuring under a plan introduced by former U.S.
Secretary of the Treasury, Nicholas F. Brady (the Brady Plan). Brady Bonds have
been issued fairly recently, and, accordingly, do not have a long payment
history. They may be collateralized or uncollateralized and issued in various
currencies (although most are dollar-denominated) and they are actively traded
in the over-the-counter secondary market. For further information on these
securities, see the Statement of Additional Information. Portfolios will only
invest in Brady Bonds consistent with quality specifications.

Cash Equivalents: are short-term fixed-income instruments comprising:
    

(1) Time deposits, certificates of deposit (including marketable variable rate
certificates of deposit) and bankers' acceptances issued by a commercial bank or
savings and loan association. Time deposits are non-negotiable deposits
maintained in a banking institution for a specified period of time at a stated
interest rate. Certificates of deposit are negotiable short-term obligations
issued by commercial banks or savings and loan associations against funds
deposited in the issuing institution. Variable rate certificates of deposit are
certificates of deposit on which the interest rate is periodically adjusted
prior to their stated maturity based upon a specified market rate. A bankers'
acceptance is a time draft drawn on a commercial bank by a borrower usually in
connection with an international commercial transaction (to finance the import,
export, transfer or storage of goods).

   
Each portfolio may invest in obligations of U.S. banks and, except for the
Domestic Fixed Income Portfolio, in foreign branches of U.S. banks (Eurodollars)
and U.S. branches of foreign banks (Yankee dollars). Euro and Yankee dollar
investments will involve some of the same risks of investing in international
securities that are discussed in the Foreign Investing section of this
Prospectus.

The portfolios will not invest in any security issued by a commercial bank
unless (i) the bank has total assets of at least $1 billion, or the equivalent
in other currencies, or, in the case of domestic banks which do not have total
assets of at least $1 billion, the aggregate investment made in any one such
bank is limited to $100,000 and the principal amount of such investment is
insured in full by the Federal Deposit Insurance Corporation, (ii) in the case
of U.S. banks, it is a member of the Federal Deposit Insurance Corporation, and
(iii) in the case of foreign branches of U.S. banks, the security is deemed by
the Adviser to be of an investment quality comparable with other debt securities
which may be purchased by the portfolio.
    

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Terms in bold type are defined in the Prospectus Glossary         MAS Fund - 23
<PAGE>



   
(2) Each portfolio may invest in commercial paper rated at time of purchase by
one or more Nationally Recognized Statistical Rating Organizations ("NRSRO") in
one of their two highest categories, (e.g., A-l or A-2 by Standard & Poor's or
Prime 1 or Prime 2 by Moody's), or, if not rated, issued by a corporation having
an outstanding unsecured debt issue rated high-grade by a NRSRO (e.g. A or
better by Moody's, Standard & Poor's or Fitch);

(3) Short-term corporate obligations rated high-grade at the time of purchase by
a NRSRO (e.g. A or better by Moody's, Standard & Poor's or Fitch);
    

(4) U.S. Government obligations including bills, notes, bonds and other debt
securities issued by the U.S. Treasury. These are direct obligations of the U.S.
Government and differ mainly in interest rates, maturities and dates of issue;

   
(5) Government Agency securities issued or guaranteed by U.S. Government
sponsored instrumentalities and Federal agencies. These include securities
issued by the Federal Home Loan Banks, Federal Land Bank, Farmers Home
Administration, Farm Credit Banks, Federal Intermediate Credit Bank, Fannie Mae,
Federal Financing Bank, the Tennessee Valley Authority, and others; and

(6) Repurchase Agreements collateralized by securities listed above.

CMOs--Collateralized Mortgage Obligations: are Derivatives which are
collateralized by mortgage pass-through securities. Cash flows from the mortgage
pass-through securities are allocated to various tranches (a "tranche" is
essentially a separate security) in a predetermined, specified order. Each
tranche has a stated maturity - the latest date by which the tranche can be
completely repaid, assuming no prepayments - and has an average life the average
of the time to receipt of a principal payment weighted by the size of the
principal payment. The average life is typically used as a proxy for maturity
because the debt is amortized (repaid a portion at a time), rather than being
paid off entirely at maturity, as would be the case in a straight debt
instrument.

Possible Risks: Due to the possibility that prepayments (on home mortgages and
other collateral) will alter the cash flow on CMOs, it is not possible to
determine in advance the actual final maturity date or average life. Faster
prepayment will shorten the average life and slower prepayments will lengthen
it. However, it is possible to determine what the range of that movement could
be and to calculate the effect that it will have on the price of the security.
In selecting these securities, the Adviser will look for those securities that
offer a higher yield to compensate for any variation in average maturity.

Like bonds in general, Mortgage Securities will generally decline in price when
interest rates rise. Rising interest rates also tend to discourage refinancings
of home mortgages with the result that the average life of Mortgage Securities
held by a portfolio may be lengthened. This extension of average life causes the
market price of the securities to decrease further than if their average lives
were fixed. In part to compensate for these risks, mortgages will generally
offer higher yields than comparable bonds. However, when interest rates fall,
mortgages may not enjoy as large a gain in market value due to prepayment risk
because additional mortgage prepayments must be reinvested at lower interest
rates.
    

Common Stocks: are Equity Securities which represent an ownership interest in a
corporation, entitling the shareholder to voting rights and receipt of dividends
paid based on proportionate ownership.

Convertibles: are convertible bonds or shares of convertible Preferred Stock
which may be exchanged for a fixed number of shares of Common Stock at the
purchaser's option.

   
Corporates--Corporate bonds: are debt instruments issued by private
corporations. Bondholders, as creditors, have a prior legal claim over common
and preferred stockholders of the corporation as to both income and assets for
the principal and interest due to the bondholder. A portfolio will buy
Corporates subject to any quality constraints. If a security held by a portfolio
is down-graded, the portfolio may retain the security if the Adviser deems
retention of the security to be in the best interests of the portfolio.
    
- --------------------------------------------------------------------------------
MAS Fund - 24         Terms in bold type are defined in the Prospectus Glossary


<PAGE>



   
Depositary Receipts: include both Global Depositary Receipts ("GDRs") and
European Depositary Receipts ("EDRs"), in addition to other similar types of
depositary shares, and are securities that can be traded in U.S. or foreign
securities markets but which represent ownership interests in a security or pool
of securities by a foreign or U.S. corporation. Depositary Receipts may be
sponsored or unsponsored. The depositary of unsponsored Depositary Receipts may
provide less information to receipt holders.

Derivatives: A financial instrument whose value and performance are based on the
value and performance of another security or financial instrument. The Adviser
will use derivatives only in circumstances where they offer the most economic
means of improving the risk/reward profile of the portfolio. The Adviser will
not use derivatives to increase portfolio risk above the level that could be
achieved in the portfolio using only traditional investment securities. In
addition, the Adviser will not use derivatives to acquire exposure to changes in
the value of assets or indexes of assets that are not listed in the applicable
Allowable Investments for the portfolio. Any applicable limitations are
described under each investment definition. The portfolios may enter into
over-the-counter Derivatives transactions with counterparties approved by the
Adviser in accordance with guidelines established by the Board of Trustees.
These guidelines provide for a minimum credit rating for each counterparty and
various credit enhancement techniques (for example, collateralization of amounts
due from counterparties) to limit exposure to counterparties with ratings below
AA. Derivatives include, but are not limited to, CMOs, Forwards, Futures and
Options, SMBS, Structured Investments, Structured Notes and Swaps. See each
individual portfolio's listing of Allowable Investments to determine which of
these a portfolio may hold.

Eastern European Issuers: The economies of Eastern European countries are
currently suffering both from the stagnation resulting from centralized economic
planning and control and the higher prices and unemployment associated with the
transition to market economics. Unstable economic and political conditions may
adversely affect security values. Upon the accession to power of Communist
regimes during the 1940's, the governments of a number of Eastern European
countries expropriated a large amount of property. The claims of many property
owners against those governments were never finally settled. As a result, there
can be no assurance that the portfolio's investments in Eastern Europe would not
be expropriated, nationalized or otherwise confiscated.
    

Emerging Markets Issuers: An emerging market security is one issued by a company
that has one or more of the following characteristics: (i) its principal
securities trading market is in an emerging market, (ii) alone or on a
consolidated basis it derives 50% or more of its annual revenue from either
goods produced, sales made or services performed in emerging markets, or (iii)
it is organized under the laws of, and has a principal office in, an emerging
market country. The Adviser will base determinations as to eligibility on
publicly available information and inquiries made to the companies. Investing in
emerging markets may entail purchasing securities issued by or on behalf of
entities that are insolvent, bankrupt, in default or otherwise engaged in an
attempt to reorganize or reschedule their obligations, and in entities that have
little or no proven credit rating or credit history. In any such case, the
issuer's poor or deteriorating financial condition may increase the likelihood
that the investing fund will experience losses or diminution in available gains
due to bankruptcy, insolvency or fraud.

   
Equity Securities: Commonly include but are not limited to Common Stock,
Preferred Stock, ADRs, Rights, Warrants, Convertibles, and Foreign Equities. See
each individual portfolio listing of Allowable Investments to determine which of
these a portfolio may hold. Preferred Stock is contained in both the definition
of Equity Securities and Fixed-Income Securities since it exhibits
characteristics commonly associated with each type.
    

Fixed-Income Securities: Commonly include but are not limited to U.S.
Governments, Zero Coupons, Agencies, Corporates, High Yield, Mortgage
Securities, SMBS, CMOs, Asset-Backeds, Convertibles, Brady Bonds, Floaters,
Inverse Floaters, Cash Equivalents, Repurchase Agreements, Preferred Stock, and
Foreign Bonds. See each individual portfolio's listing of Allowable Investments
to determine which of these a portfolio may hold. Preferred Stock is contained
in both the definition of Equity Securities and Fixed-Income Securities since it
exhibits characteristics commonly associated with each type of security.

Floaters--Floating and Variable Rate Obligations: are debt obligations with a
floating or variable rate of interest, i.e. the rate of interest varies with
changes in specified market rates or indices, such as the prime rate, or at
specified intervals. Certain floating or variable rate obligations may carry a
demand feature that permits the holder to tender them back to the issuer of the
underlying instrument, or to a third party, at par value prior to maturity. When
the demand


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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 25


<PAGE>



feature of certain floating or variable rate obligations represents an
obligation of a foreign entity, the demand feature will be subject to certain
risks discussed under Foreign Investing.

Foreign Bonds: are Fixed Income Securities denominated in foreign currency and
issued and traded primarily outside of the U.S., including: (1) obligations
issued or guaranteed by foreign national governments, their agencies,
instrumentalities, or political subdivisions; (2) debt securities issued,
guaranteed or sponsored by supranational organizations established or supported
by several national governments, including the World Bank, the European
Community, the Asian Development Bank and others; (3) non-government foreign
corporate debt securities; and (4) foreign Mortgage Securities and various other
mortgages and asset-backed securities.

Foreign Currency: Portfolios investing in foreign securities will regularly
transact security purchases and sales in foreign currencies. These portfolios
may hold foreign currency or purchase or sell currencies on a forward basis (see
Forwards)

Foreign Equities: are Common Stock, Preferred Stock, Rights and Warrants of
foreign issuers denominated in foreign currency and traded primarily in non-U.S.
markets. Foreign Equities also include Depositary Receipts. Investing in foreign
companies involves certain special considerations which are not typically
associated with investing in U.S. companies (see Foreign Investing).

Forwards--Forward Foreign Currency Exchange Contracts: are Derivatives which are
used to protect against uncertainty in the level of future foreign exchange
rates. A forward foreign currency exchange contract is an obligation to purchase
or sell a specific currency at a future date, which may be any fixed number of
days from the date of the contract agreed upon by the parties, at a price set at
the time of the contract. Such contracts do not eliminate fluctuations caused by
changes in the local currency prices of the securities, but rather, they
establish an exchange rate at a future date. Also, although such contracts can
minimize the risk of loss due to a decline in the value of the hedged currency,
at the same time they limit any potential gain that might be realized.

A portfolio may use currency exchange contracts in the normal course of business
to lock in an exchange rate in connection with purchases and sales of securities
denominated in foreign currencies (transaction hedge) or to lock in the U.S.
dollar value of portfolio positions (position hedge). In addition, the
portfolios may cross hedge currencies by entering into a transaction to purchase
or sell one or more currencies that are expected to decline in value relative to
other currencies to which a portfolio has or expects to have portfolio exposure.
Portfolios may also engage in proxy hedging which is defined as entering into
positions in one currency to hedge investments denominated in another currency,
where the two currencies are economically linked. A portfolio's entry into
forward contracts, as well as any use of cross or proxy hedging techniques will
generally require the portfolio to hold liquid securities or cash equal to the
portfolio's obligations in a segregated account throughout the duration of the
contract.

A portfolio may also combine forward contracts with investments in securities
denominated in other currencies in order to achieve desired credit and currency
exposures. Such combinations are generally referred to as synthetic securities.
For example, in lieu of purchasing a foreign bond, a portfolio may purchase a
U.S. dollar-denominated security and at the same time enter into a forward
contract to exchange U.S. dollars for the contract's underlying currency at a
future date. By matching the amount of U.S. dollars to be exchanged with the
anticipated value of the U.S. dollar-denominated security, a portfolio may be
able to lock in the foreign currency value of the security and adopt a synthetic
investment position reflecting the credit quality of the U.S.
dollar-denominated security.

   
There is a risk in adopting a transaction hedge or position hedge to the extent
that the value of a security denominated in foreign currency is not exactly
matched with a portfolio's obligation under the forward contract. On the date of
maturity, a portfolio may be exposed to some risk of loss from fluctuations in
that currency. Although the Adviser will attempt to hold such mismatching to a
minimum, there can be no assurance that the Adviser will be able to do so. For
proxy hedges, cross hedges or a synthetic position, there is an additional risk
in that these transactions create residual foreign currency exposure. When a
portfolio enters into a forward contract for purposes of creating a position
hedge, transaction hedge, cross hedge or a synthetic security, it will generally
be required to hold liquid securities or cash in a segregated account with a
daily value at least equal to its obligation under the forward contract.
    

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MAS Fund - 26         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



Futures & Options--Futures Contracts, Options on Futures Contracts and Options:
are Derivatives. Futures contracts provide for the sale by one party and
purchase by another party of a specified amount of a specific security, at a
specified future time and price. An option is a legal contract that gives the
holder the right to buy or sell a specified amount of the underlying security or
futures contract at a fixed or determinable price upon the exercise of the
option. A call option conveys the right to buy and a put option conveys the
right to sell a specified quantity of the underlying security.

   
A portfolio will not enter into futures contracts to the extent that its
outstanding obligations to purchase securities under these contracts in
combination with its outstanding obligations with respect to options
transactions would exceed 50% of its total assets. It will maintain assets
sufficient to meet its obligations under such contracts in a segregated account
with the custodian bank or will otherwise comply with the Securities and
Exchange Commission's ("SEC's") position on asset coverage.

Possible Risks: The primary risks associated with the use of Futures and Options
are (i) imperfect correlation between the change in market value of the
securities held by a portfolio and the prices of futures and options relating to
the stocks, bonds or futures contracts purchased or sold by a portfolio; and
(ii) possible lack of a liquid secondary market for a futures contract and the
resulting inability to close a futures position which could have an adverse
impact on a portfolio's ability to execute futures and options strategies.
Additional risks associated with options transactions are (i) the risk that an
option will expire worthless; (ii) the risk that the issuer of an over-the-
counter option will be unable to fulfill its obligation to the portfolio due to
bankruptcy or related circumstances; (iii) the risk that options may exhibit
greater short-term price volatility than the underlying security; and (iv) the
risk that a portfolio may be forced to forego participation in the appreciation
of the value of underlying securities, futures contracts or currency due to the
writing of a call option.

High Yield: High yield securities are generally considered to be Corporates,
Preferred Stocks, and Convertibles rated Ba through C by Moody's or BB through D
by Standard & Poor's, and unrated securities considered to be of equivalent
quality. Securities rated less than Baa by Moody's or BBB by Standard & Poor's
are classified as non-investment grade securities and are commonly referred to
as junk bonds or high yield, high risk securities. Such securities carry a high
degree of risk and are considered speculative by the major credit rating
agencies. The following are excerpts from the Moody's and Standard & Poor's
definitions for speculative-grade debt obligations:

     Moody's: Ba-rated bonds have "speculative elements" so their future "cannot
     be considered assured," and protection of principal and interest is
     "moderate" and "not well safeguarded during both good and bad times in the
     future." B-rated bonds "lack characteristics of a desirable investment" and
     the assurance of interest or principal payments "may be small." Caa-rated
     bonds are "of poor standing" and "may be in default" or may have "elements
     of danger with respect to principal or interest." Ca-rated bonds represent
     obligations which are speculative in a high degree. Such issues are often
     in default or have other marked shortcomings. C-rated bonds are the "lowest
     rated" class of bonds, and issues so rated can be regarded as having
     "extremely poor prospects" of ever attaining any real investment standing.

     Standard & Poor's: BB-rated bonds have "less near-term vulnerability to
     default" than B- or CCC-rated securities but face "major ongoing
     uncertainties . . . which may lead to inadequate capacity" to pay interest
     or principal. B-rated bonds have a "greater vulnerability to default than
     BB-rated bonds and the ability to pay interest or principal will likely be
     impaired by adverse business conditions." CCC-rated bonds have a currently
     identifiable "vulnerability to default" and, without favorable business
     conditions, will be "unable to repay interest and principal." The rating C
     is reserved for income bonds on which "no interest is being paid." Debt
     rated D is in "default", and "payment of interest and/or repayment of
     principal is in arrears."

While these securities offer High Yields, they also normally carry with them a
greater degree of risk than securities with higher ratings. Lower-rated bonds
are considered speculative by traditional investment standards. High yield
securities may be issued as a consequence of corporate restructuring or similar
events. Also, high yield securities are often issued by smaller, less credit
worthy companies, or by highly leveraged (indebted) firms, which are generally
less able than more established or less leveraged firms to make scheduled
payments of interest and principal. The price movement of these securities is
influenced less by changes in interest rates and more by the financial and
business position of the issuing corporation when compared to investment grade
bonds. 
    


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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 27

<PAGE>



   
The risks posed by securities issued under such circumstances are substantial.
If a security held by a portfolio is down-graded, the portfolio may retain the
security.

Inverse Floaters--Inverse Floating Rate Obligations: are Fixed-Income
Securities, which have coupon rates that vary inversely at a multiple of a
designated floating rate, such as LIBOR (London Inter-Bank Offered Rate). Any
rise in the reference rate of an Inverse Floater (as a consequence of an
increase in interest rates) causes a drop in the coupon rate while any drop in
the reference rate of an Inverse Floater causes an increase in the coupon rate.
Inverse Floaters may exhibit substantially greater price volatility than fixed
rate obligations having similar credit quality, redemption provisions and
maturity, and Inverse Floater CMOs exhibit greater price volatility than the
majority of mortgage pass-through securities or CMOs. In addition, some Inverse
Floater CMOs exhibit extreme sensitivity to changes in prepayments. As a result,
the yield to maturity of an Inverse Floater CMO is sensitive not only to changes
in interest rates but also to changes in prepayment rates on the related
underlying mortgage assets.

Investment Companies: The portfolios are permitted to invest in shares of other
open-end or closed-end investment companies. The Investment Company Act of 1940
(the "1940 Act") generally prohibits the portfolios from acquiring more than 3%
of the outstanding voting shares of an investment company and limits such
investments to no more than 5% of the portfolio's total assets in any one
investment company and no more than 10% in any combination of investment
companies. The 1940 Act also prohibits the portfolios from acquiring in the
aggregate more than 10% of the outstanding voting shares of any registered
closed-end investment company.

To the extent a portfolio invests a portion of its assets in Investment
Companies, those assets will be subject to the expenses of the investment
company as well as to the expenses of the portfolio itself. The portfolios may
not purchase shares of any affiliated investment company except as permitted by
SEC rule or order.

Investment Funds: Some emerging market countries have laws and regulations that
currently preclude or limit direct foreign investment in the securities of their
companies. However, indirect foreign investment in the securities of companies
listed and traded on the stock exchanges in these countries is permitted by
certain emerging market countries through investment funds. Portfolios that may
invest in these Investment Funds are subject to applicable law as discussed
under Investment Restrictions and will invest in such Investment Funds only
where appropriate given that the portfolio's shareholders will bear indirectly
the layer of expenses of the underlying investment funds in addition to their
proportionate share of the expenses of the portfolio. Under certain
circumstances, an investment in an investment fund will be subject to the
additional limitations that apply to investments in Investment Companies.

Investment Grade Securities: are those (a) rated by one or more nationally
recognized statistical rating organization (NRSRO) in one of the four highest
rating categories at the time of purchase (e.g. AAA, AA, A or BBB by Standard &
Poor's Corporation (Standard & Poor's) or Fitch Investors Service, Inc., (Fitch)
or Aaa, Aa, A or Baa by Moody's Investors Service, Inc. (Moody's)); (b)
guaranteed by the U.S. Government or a private organization; or (c) considered
by the Adviser to be investment grade quality. Securities rated BBB or Baa
represent the lowest of four levels of Investment Grade Securities and are
regarded as borderline between definitely sound obligations and those in which
the speculative element begins to predominate. Mortgage Securities, including
mortgage pass-throughs and CMOs, deemed investment grade by the Adviser, will
either carry a guarantee from an agency of the U.S. Government or a private
issuer of the timely payment of principal and interest (such guarantees do not
extend to the market value of such securities or the net asset value per share
of the portfolio) or, in the case of unrated securities, be sufficiently
seasoned that they are considered by the Adviser to be investment grade quality.
The Adviser may retain securities if their ratings fall below investment grade
if it deems retention of the security to be in the best interests of the
portfolio. Any portfolio permitted to hold Investment Grade Securities may hold
unrated securities if the Adviser considers the risks involved in owning that
security to be equivalent to the risks involved in holding an Investment Grade
Security.

Loan Participations: are loans or other direct debt instruments which are
interests in amounts owed by a corporate, governmental or other borrower to
another party. They may represent amounts owed to lenders or lending syndicates,
to suppliers of goods or services (trade claims or other receivables), or to
other parties. Direct debt instruments involve the risk of loss in case of
default or insolvency of the borrower. Direct debt instruments may offer less
legal protection to the portfolio in the event of fraud or misrepresentation. In
addition, loan participations involve a risk of insolvency of the lending bank
or other financial intermediary. Direct debt instruments may also include
standby 
    

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MAS Fund - 28          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



financing commitments that obligate the investing portfolio to supply additional
cash to the borrower on demand. Loan participations involving Emerging Markets
Issuers may relate to loans as to which there has been or currently exists an
event of default or other failure to make payment when due, and may represent
amounts owed to financial institutions that are themselves subject to political
and economic risks, including the risk of currency devaluation, expropriation,
or failure. Such loan participations present additional risks of default or
loss.

   
Mortgage Securities--Mortgage-backed securities represent an ownership interest
in a pool of residential and commercial mortgage loans. Generally, these
securities are designed to provide monthly payments of interest and principal to
the investor. The mortgagee's monthly payments to his/her lending institution
are passed through to investors such as the portfolio. Most issuers or poolers
provide guarantees of payments, regardless of whether the mortgagor actually
makes the payment. The guarantees made by issuers or poolers are supported by
various forms of credit, collateral, guarantees or insurance, including
individual loan, title, pool and hazard insurance purchased by the issuer. The
pools are assembled by various governmental, government-related and private
organizations. Portfolios may invest in securities issued or guaranteed by the
government National Mortgage Association (GNMA), Federal Home Loan Mortgage
Corporation (FHLMC), Fannie Mae, private issuers and other government agencies.
There can be no assurance that the private insurers can meet their obligations
under the policies. Mortgage Securities issued by non-agency issuers, whether or
not such securities are subject to guarantees, may entail greater risk. If there
is no guarantee provided by the issuer, mortgage-backed securities purchased by
the portfolio will be those which at time of purchase are rated investment grade
by one or more NRSRO, or, if unrated, are deemed by the Adviser to be of
investment grade quality.

There are two methods of trading Mortgage Securities. A specified pool
transaction is a trade in which the pool number of the security to be delivered
on the settlement date is known at the time the trade is made. This is in
contrast with the typical Mortgage Security transaction, called a TBA (to be
announced) transaction, in which the type of Mortgage Securities to be delivered
is specified at the time of trade but the actual pool numbers of the securities
that will be delivered are not known at the time of the trade. The pool numbers
of the pools to be delivered at settlement will be announced shortly before
settlement takes place. The terms of the TBA trade may be made more specific if
desired. Generally, agency pass-through Mortgage Securities are traded on a TBA
basis.

A mortgage-backed bond is a collateralized debt security issued by a thrift or
financial institution. The bondholder has a first priority perfected security
interest in collateral, usually consisting of agency mortgage pass-through
securities, although other assets, including U.S. Treasuries (including Zero
Coupon U.S. Treasuries), agencies, cash equivalent securities, whole loans and
corporate bonds, may qualify. The amount of collateral must be continuously
maintained at levels from 115% to 150% of the principal amount of the bonds
issued, depending on the specific issue structure and collateral type.

Possible Risks: Due to the possibility that prepayments on home mortgages will
alter cash flow on Mortgage Securities, it is not possible to determine in
advance the actual final maturity date or average life. Like bonds in general,
mortgage-backed securities will generally decline in price when interest rates
rise. Rising interest rates also tend to discourage refinancings of home
mortgages, with the result that the average life of Mortgage Securities held by
a portfolio may be lengthened. This extension of average life causes the market
price of the securities to decrease further than if their average lives were
fixed. However, when interest rates fall, mortgages may not enjoy as large a
gain in market value due to prepayment risk because additional mortgage
prepayments must be reinvested at lower interest rates. Faster prepayment will
shorten the average life and slower prepayments will lengthen it. However, it is
possible to determine what the range of that movement could be and to calculate
the effect that it will have on the price of the security. In selecting these
securities, the Adviser will look for those securities that offer a higher yield
to compensate for any variation in average maturity.

Municipals--Municipal Securities: are debt obligations issued by local, state
and regional governments that provide interest income which is exempt from
federal income taxes. Municipal Securities include both municipal bonds (those
securities with maturities of five years or more) and municipal notes (those
with maturities of less than five years). Municipal bonds are issued for a wide
variety of reasons: to construct public facilities, such as airports, highways,
bridges, schools, hospitals, mass transportation, streets, water and sewer
works; to obtain funds for operating expenses; to refund outstanding municipal
obligations; and to loan funds to various public institutions and facilities.
Certain industrial development bonds are also considered municipal bonds if
their interest is exempt from federal income tax. Industrial development bonds
are issued by or on behalf of public authorities to obtain funds for various
privately-
    
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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 29


<PAGE>



operated manufacturing facilities, housing, sports arenas, convention centers,
airports, mass transportation systems and water, gas or sewage works. Industrial
development bonds are ordinarily dependent on the credit quality of a private
user, not the public issuer.

General obligation municipal bonds are secured by the issuer's pledge of full
faith, credit and taxing power. Revenue or special tax bonds are payable from
the revenues derived from a particular facility or, in some cases, from a
special excise or other tax, but not from general tax revenue.

Municipal notes are issued to meet the short-term funding requirements of local,
regional and state governments. Municipal notes include bond anticipation notes,
revenue anticipation notes and tax and revenue anticipation notes. These are
short-term debt obligations issued by state and local governments to aid cash
flows while waiting for taxes or revenue to be collected, at which time the debt
is retired. Other types of municipal notes in which the portfolio may invest are
construction loan notes, short-term discount notes, tax-exempt commercial paper,
demand notes, and similar instruments. Demand notes permit an investor (such as
the portfolio) to demand from the issuer payment of principal plus accrued
interest upon a specified number of days' notice. The portfolios eligible to
purchase municipal bonds may also purchase AMT bonds. AMT bonds are tax-exempt
private activity bonds issued after August 7, 1986, the proceeds of which are
directed, at least in part, to private, for-profit organizations. While the
income from AMT bonds is exempt from regular federal income tax, it is a tax
preference item in the calculation of the alternative minimum tax. The
alternative minimum tax is a special separate tax that applies to a limited
number of taxpayers who have certain adjustments to income or tax preference
items.

   
Preferred Stock: are non-voting ownership shares in a corporation which pay a
fixed or variable stream of dividends.
    

Repurchase Agreements: are transactions by which a portfolio purchases a
security and simultaneously commits to resell that security to the seller (a
bank or securities dealer) at an agreed upon price on an agreed upon date
(usually within seven days 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 date of maturity of the purchased security. Such agreements
permit the portfolio to keep all its assets at work while retaining overnight
flexibility in pursuit of investments of a longer term nature. The Adviser will
continually monitor the value of the underlying collateral to ensure that its
value, including accrued interest, always equals or exceeds the repurchase
price.

   
Pursuant to an order issued by the SEC, the Fund's portfolios may pool their
daily uninvested cash balances in order to invest in Repurchase Agreements on a
joint basis. By entering into Repurchase Agreements on a joint basis, it is
expected that the portfolios will incur lower transaction costs and potentially
obtain higher rates of interest on such Repurchase Agreements. Each portfolio's
participation in the income from jointly purchased Repurchase Agreements will be
based on that portfolio's percentage share in the total Repurchase Agreement.
    

Rights: represent a preemptive right of stockholders to purchase additional
shares of a stock at the time of a new issuance, before the stock is offered to
the general public, allowing the stockholder to retain the same ownership
percentage after the new stock offering.

SMBS--Stripped Mortgage-Backed Securities: are Derivatives in the form of
multi-class mortgage securities. SMBS may be issued by agencies or
instrumentalities of the U.S. Government and private originators of, or
investors in, mortgage loans, including savings and loan associations, mortgage
banks, commercial banks, investment banks and special purpose entities of the
foregoing.

SMBS are usually structured with two classes that receive different proportions
of the interest and principal distributions on a pool of mortgage assets. One
type of SMBS will have one class receiving some of the interest and most of the
principal from the mortgage assets, while the other class will receive most of
the interest and the remainder of the principal. In some cases, one class will
receive all of the interest (the interest-only or IO class), while the other
class will receive all of the principal (the principal-only or PO class). The
yield to maturity on IOs and POs is extremely sensitive to the rate of principal
payments (including prepayments) on the related underlying mortgage assets, and
a rapid rate of principal payments may have a material adverse effect on a
portfolio yield to maturity. If the underlying 


- --------------------------------------------------------------------------------
MAS Fund - 30         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



mortgage assets experience greater than anticipated prepayments of principal, a
portfolio may fail to fully recoup its initial investment in these securities,
even if the security is in one of the highest rating categories.

   
Although SMBS are purchased and sold by institutional investors through several
investment banking firms acting as brokers or dealers, these securities were
only recently developed. As a result, established trading markets have not yet
developed and, accordingly, certain of these securities may be deemed illiquid
and subject to a portfolio's limitations on investment in illiquid securities.

Structured Investments: are Derivatives in the form of a unit or units
representing an undivided interest(s) in assets held in a trust that is not an
investment company as defined in the 1940 Act. A trust unit pays a return based
on the total return of securities and other investments held by the trust and
the trust may enter into one or more Swaps to achieve its objective. For
example, a trust may purchase a basket of securities and agree to exchange the
return generated by those securities for the return generated by another basket
or index of securities. A portfolio will purchase Structured Investments in
trusts that engage in such Swaps only where the counterparties are approved by
the Adviser in accordance with credit-risk guidelines established by the Board
of Trustees.
    

Structured Notes: are Derivatives on which the amount of principal repayment and
or interest payments is based upon the movement of one or more factors. These
factors include, but are not limited to, currency exchange rates, interest rates
(such as the prime lending rate and LIBOR) and stock indices such as the S&P 500
Index. In some cases, the impact of the movements of these factors may increase
or decrease through the use of multipliers or deflators. The use of Structured
Notes allows a portfolio to tailor its investments to the specific risks and
returns the Adviser wishes to accept while avoiding or reducing certain other
risks.

   
Swaps--Swap Contracts: are Derivatives in the form of a contract or other
similar instrument which is an agreement to exchange the return generated by one
instrument for the return generated by another instrument. The payment streams
are calculated by reference to a specified index and agreed upon notional
amount. The term specified index includes, but is not limited to, currencies,
fixed interest rates, prices and total return on interest rate indices,
fixed-income indices, stock indices and commodity indices (as well as amounts
derived from arithmetic operations on these indices). For example, a portfolio
may agree to swap the return generated by a fixed-income index for the return
generated by a second fixed-income index. The currency Swaps in which the
portfolios may enter will generally involve an agreement to pay interest streams
in one currency based on a specified index in exchange for receiving interest
streams denominated in another currency. Such Swaps may involve initial and
final exchanges that correspond to the agreed upon notional amount.

A portfolio will usually enter into Swaps on a net basis, i.e., the two return
streams are netted out in a cash settlement on the payment date or dates
specified in the instrument, with a portfolio receiving or paying, as the case
may be, only the net amount of the two returns. A portfolio's obligations under
a swap agreement will be accrued daily (offset against any amounts owing to the
portfolio) and any accrued but unpaid net amounts owed to a swap counterparty
will be covered by the maintenance of a segregated account consisting of cash or
liquid securities. A portfolio will not enter into any swap agreement unless the
counterparty meets the rating requirements set forth in guidelines established
by the Board of Trustees.

Possible Risks: Interest rate and total rate of return Swaps do not involve the
delivery of securities, other underlying assets, or principal. Accordingly, the
risk of loss with respect to interest rate and total rate of return Swaps is
limited to the net amount of interest payments that a portfolio is contractually
obligated to make. If the other party to an interest rate or total rate of
return swap defaults, a portfolio's risk of loss consists of the net amount of
interest payments that a portfolio is contractually entitled to receive. In
contrast, currency swaps may involve the delivery of the entire principal value
of one designated currency in exchange for the other designated currency.
Therefore, the entire principal value of a currency swap may be subject to the
risk that the other party to the swap will default on its contractual delivery
obligations. If there is a default by the counterparty, a portfolio may have
contractual remedies pursuant to the agreements related to the transaction. The
swap market has grown substantially in recent years with a large number of banks
and investment banking firms acting both as principals and as agents utilizing
standardized swap documentation. As a result, the swap market has become
relatively liquid. Swaps that include caps, floors, and collars are more recent
innovations for which standardized documentation has not yet been fully
developed and, accordingly, they are less liquid than Swaps. 
    

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 31

<PAGE>



   
The use of Swaps is a highly specialized activity which involves investment
techniques and risks different from those associated with ordinary portfolio
securities transactions. If the Adviser is incorrect in its forecasts of market
values, interest rates, and currency exchange rates, the investment performance
of the portfolios would be less favorable than it would have been if this
investment technique were not used.

U.S. Governments--U.S. Treasury securities: are Fixed-Income Securities which
are backed by the full faith and credit of the U.S. Government as to the payment
of both principal and interest.
    

Warrants: are options issued by a corporation which give the holder the option
to purchase stock.

When-Issued Securities: are securities purchased at a certain price even though
the securities may not be delivered for up to 90 days. No payment or delivery is
made by a portfolio in a when-issued transaction until the portfolio receives
payment or delivery from the other party to the transaction. Although a
portfolio receives no income from the above described securities prior to
delivery, the market value of such securities is still subject to change. As a
consequence, it is possible that the market price of the securities at the time
of delivery may be higher or lower than the purchase price. A portfolio will
maintain with the custodian a segregated account consisting of cash or liquid
securities in an amount at least equal to these commitments.

   
Yankees: are U.S. dollar-denominated Fixed-Income Securities issued by a foreign
government and sold in the U.S.

Zero Coupons--Zero Coupon Obligations: are Fixed-Income Securities that do not
make regular interest payments. Instead, zero coupon obligations are sold at
substantial discounts from their face value. The difference between a zero
coupon obligation's issue or purchase price and its face value represents the
imputed interest an investor will earn if the obligation is held until maturity.
Zero Coupons may offer investors the opportunity to earn higher yields than
those available on ordinary interest-paying obligations of similar credit
quality and maturity. However, zero coupon obligation prices may also exhibit
greater price volatility than ordinary Fixed-Income Securities because of the
manner in which their principal and interest are returned to the investor.
    

                         GENERAL SHAREHOLDER INFORMATION


PURCHASE OF SHARES

   
Investment Class Shares are available to clients of the Adviser with combined
investments of $1,000,000 and Shareholder Organizations who have a contractual
arrangement with the Fund or the Fund's Distributor, including institutions such
as trusts, foundations or broker-dealers purchasing for the accounts of others.

Investment Class Shares of each portfolio may be purchased at the net asset
value per share next determined after receipt of the purchase order. Such
portfolios determine net asset value as described under General Shareholder
Information-Valuation of Shares each day that the portfolios are open for
business. See Other Information-Closed Holidays and General Shareholder
Information--Valuation of Shares.

Initial Purchase by Mail: Subject to acceptance by the Fund, an account may be
opened by completing and signing an Account Registration Form (provided at the
end of the prospectus) and mailing it to MAS Funds c/o Miller Anderson &
Sherrerd, LLP, One Tower Bridge, West Conshohocken, PA 19428-0868 together with
a check ($1,000,000 minimum) payable to MAS Funds.

The portfolios requested should be designated on the Account Registration Form.
Subject to acceptance by the Fund, payment for the purchase of shares received
by mail will be credited at the net asset value per share of the portfolio next
determined after receipt. Such payment need not be converted into Federal Funds
(monies credited to the Fund's Custodian Bank by a Federal Reserve Bank) before
acceptance by the Fund, Please note that payments to investors who redeem shares
purchased by check will not be made until payment of the purchase has been
collected, which may take up to eight business days after purchase. Shareholders
can avoid this delay by purchasing shares by wire. 
    
- --------------------------------------------------------------------------------
MAS Fund - 32         Terms in bold type are defined in the Prospectus Glossary


<PAGE>



   
Initial Purchase by Wire: Subject to acceptance by the Fund, Investment Class
Shares of each portfolio may also be purchased by wiring Federal Funds to the
Fund's Custodian Bank, The Chase Manhattan Bank (see instructions below). A
completed Account Registration Form should be forwarded to MAS Funds' Client
Services Group in advance of the wire. For all portfolios notification must be
given to MAS Funds' Client Services Group at 1-800-354-8185 prior to the
determination of net asset value. Investment Class Shares will be purchased at
the net asset value per share next determined after receipt of the purchase
order. (Prior notification must also be received from investors with existing
accounts.) Instruct your bank to send a Federal Funds Wire in a specified amount
to the Fund's Custodian Bank using the following wiring instructions:
    

                         The Chase Manhattan Bank 
                         1 Chase Manhattan Plaza 
                         New York, NY 10081 
                         ABA  #021000021
                         DDA  #910-2-734143
                         Attn: MAS Funds Subscription Account
                         Ref: (Portfolio Name, Account Number, Account Name)

   
Additional Investments: Additional investments of Investment Class Shares at net
asset value may be made at any time (minimum additional investment $1,000) by
mailing a check (payable to MAS Funds) to MAS Funds' Client Services Group at
the address noted under Initial Purchase by Mail or by wiring Federal Funds to
the Custodian Bank as outlined above. Shares will be purchased at the net asset
value per share next determined after receipt of the purchase order. For all
portfolios, notification must be given to MAS Funds' Client Services Group at
1-800-354-8185 prior to the determination of net asset value.

Other Purchase Information: The Fund reserves the right, in its sole discretion,
to suspend the offering of any of its portfolios or to reject any purchase
orders when, in the judgment of management, such suspension or rejection is in
the best interest of the Fund. The Fund also reserves the right, in its sole
discretion, to waive the minimum initial and additional investment amounts.

Purchases of a portfolio's shares will be made in full and fractional shares of
the portfolio calculated to three decimal places. In the interest of economy and
convenience, certificates for shares will not be issued except at the written
request of the shareholder. Certificates for fractional shares, however, will
not be issued.

Investment Class Shares of the Fund's portfolios are also sold to corporations
or other institutions such as trusts, foundations or broker-dealers purchasing
for the accounts of others (Shareholder Organizations). Investors purchasing and
redeeming shares of the portfolios through a Shareholder Organization may be
charged a transaction-based fee or other fee for the services of such
organization. Each Shareholder Organization is responsible for transmitting to
its customers a schedule of any such fees and information regarding any
additional or different conditions regarding purchases and redemptions.
Customers of Shareholder Organizations should read this Prospectus in light of
the terms governing accounts with their organization. The Fund does not pay
compensation to or receive compensation from Shareholder Organizations for the
sale of Investment Class Shares through Shareholder Organizations may receive a
fee for providing shareholder services to their clients who hold Investment
Class Shares.
    

REDEMPTION OF SHARES

   
Shares of each portfolio may be redeemed by mail, or, if authorized, by
telephone. No charge is made for redemptions. The value of shares redeemed may
be more or less than the purchase price, depending on the net asset value at the
time of redemption which is based on the market value of the investment
securities held by the portfolio. See Other Information-Closed Holidays and
Valuation of Shares.

By Mail: Each portfolio will redeem shares at the net asset value next
determined after the request is received in good order. Requests should be
addressed to MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge,
West Conshohocken, PA 19428-0868.
    

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 33

<PAGE>



To be in good order, redemption requests must include the following
documentation:

(a) The share certificates, if issued;

(b) A letter of instruction, if required, or a stock assignment specifying the
number of shares or dollar amount to be redeemed, signed by all registered
owners of the shares in the exact names in which the shares are registered;

(c) Any required signature guarantees (see Signature Guarantees); and

(d) Other supporting legal documents, if required, in the case of estates,
trusts, guardianships, custodianships, corporations, pension and profit sharing
plans and other organizations.

Signature Guarantees: To protect your account, the Fund and the Administrator
from fraud, signature guarantees are required to enable the Fund to verify the
identity of the person who has authorized a redemption from an account.
Signature guarantees are required for (1) redemptions where the proceeds are to
be sent to someone other than the registered shareholder(s) and the registered
address, and (2) share transfer requests. Please contact MAS Funds' Client
Services Group for further details.

By Telephone: Provided the Telephone Redemption Option has been authorized by
the shareholder on the Account Registration Form, a redemption of shares may be
requested by calling MAS Funds' Client Services Group and requesting that the
redemption proceeds be mailed to the primary registration address or wired per
the authorized instructions. Shares cannot be redeemed by telephone if share
certificates are held for those shares.

   
By Facsimile: Written requests in good order (see above) for redemptions,
exchanges, and transfers may be forwarded to the Fund via facsimile. All
requests sent to the Fund via facsimile must be followed by a telephone call to
MAS Funds' Client Services Group to ensure that the instructions have been
properly received by the Fund. The original request must be promptly mailed to
MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge, West
Conshohocken, PA 19428-0868.

Neither the Distributor nor the Fund will be responsible for any loss,
liability, cost, or expense for acting upon facsimile instructions or upon
telephone instructions that they reasonably believe to be genuine. In order to
confirm that telephone instructions in connection with redemptions are genuine,
the Fund and Distributor will provide written confirmation of transactions
initiated by telephone.

Payment of the redemption proceeds will ordinarily be made within three business
days after receipt of an order for a redemption. The Fund may suspend the right
of redemption or postpone the date of redemption at times when the New York
Stock Exchange ("NYSE"), the Custodian, or the Fund is closed (see Other
Information-Closed Holidays) or under any emergency circumstances as determined
by the SEC.

If the Board of Trustees determines that it would be detrimental to the best
interests of the remaining shareholders of the Fund to make payment wholly or
partly in cash, the Fund may pay the redemption proceeds in whole or in part by
a distribution in-kind of readily marketable securities held by a portfolio in
lieu of cash in conformity with applicable rules of the SEC. Investors may incur
brokerage charges on the sale of portfolio securities received in such payments
of redemptions.

SHAREHOLDER SERVICES

Exchange Privilege: Each portfolio's Investment Class Shares may be exchanged
for shares of the Fund's other portfolios offering Investment Class Shares based
on the respective net asset values of the shares involved. The exchange
privilege is only available, however, with respect to portfolios that are
qualified for sale in a shareholder's state of residence. There are no exchange
fees. Exchange requests should be sent to MAS Funds, c/o Miller Anderson &
Sherrerd, LLP, One Tower Bridge, West Conshohocken, PA 19428-0868.
    

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MAS Fund - 34         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
Because an exchange of shares amounts to a redemption from one portfolio and
purchase of shares of another portfolio, the above information regarding
purchase and redemption of shares applies to exchanges. Shareholders should note
that an exchange between portfolios is considered a sale and purchase of shares.
The sale of shares may result in a capital gain or loss for tax purposes.
    

The officers of the Fund reserve the right not to accept any request for an
exchange when, in their opinion, the exchange privilege is being used as a tool
for market timing. The Fund reserves the right to change the terms or conditions
of the exchange privilege discussed herein upon sixty days' notice.

Transfer of Registration: The registration of Fund shares may be transferred by
writing to MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge,
West Conshohocken, PA 19428-0868. As in the case of redemptions, the written
request must be received in good order as defined above. Unless shares are being
transferred to an existing account, requests for transfer must be accompanied by
a completed Account Registration Form for the receiving party.

   
VALUATION OF SHARES

Equity, International Equity, Mid Cap Value and Value Portfolios:

Net asset value per share is determined by dividing the total market value of
each portfolio's investments and other assets, less any liabilities, by the
total outstanding shares of that portfolio. Net asset value per share is
determined as of the close of the NYSE (normally 4:00 p.m. Eastern Time) on each
day the portfolio is open for business (See Other Information-Closed Holidays).
Equity Securities listed on a U.S. securities exchange or Nasdaq for which
market quotations are available are valued at the last quoted sale price on the
day the valuation is made. Price information on listed Equity Securities is
taken from the exchange where the security is primarily traded. Equity
Securities listed on a foreign exchange are valued at the latest quoted sales
price available before the time when assets are valued. For purposes of net
asset value per share, all assets and liabilities initially expressed in foreign
currencies are converted into U.S. dollars at the bid price of such currencies
against U.S. dollars. Unlisted Equity Securities and listed U.S. Equity
Securities not traded on the valuation date for which market quotations are
readily available are valued at the mean of the most recent quoted bid and asked
price. The values of other assets and securities for which no quotations are
readily available (including restricted securities), and, to the extent
permitted by the SEC, securities for which the value has been materially
affected by events occurring after the close of the market on which they
principally trade, are determined in good faith at fair value using methods
approved by the Trustees.

Domestic Fixed Income, Fixed Income and High Yield Portfolios:

Net asset value per share is computed by dividing the total value of the
investments and other assets of the portfolio, less any liabilities, by the
total outstanding shares of the portfolio. The net asset value per share is
determined as of one hour after the close of the bond markets (normally 4:00
p.m. Eastern Time) on each day the portfolio is open for business (See Other
Information-Closed Holidays). Bonds and other Fixed-Income Securities listed on
a foreign exchange are valued at the latest quoted sales price available before
the time when assets are valued. For purposes of net asset value per share, all
assets and liabilities initially expressed in foreign currencies will be
converted into U.S. dollars at the bid price of such currencies against U.S.
dollars.

Net asset value includes interest on bonds and other Fixed-Income Securities
which is accrued daily. Bonds and other Fixed-Income Securities which are traded
over the counter and on an exchange will be valued according to the broadest and
most representative market, and it is expected that for bonds and other
Fixed-Income Securities this ordinarily will be the over-the-counter market.
    

However, bonds and other Fixed-Income Securities may be valued on the basis of
prices provided by a pricing service when such prices are believed to reflect
the fair market value of such securities. The prices provided by a pricing
service are determined without regard to bid or last sale prices but take into
account institutional size trading in similar groups of securities and any
developments related to specific securities. Bonds and other Fixed-Income
Securities not priced in this manner are valued at the most recent quoted bid
price, or when stock exchange valuations are used, at the latest quoted sale
price on the day of valuation. If there is no such reported sale, the latest
quoted bid price will be used. Securities purchased with remaining maturities of
60 days or less are valued at amortized

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 35

<PAGE>



   
cost when the Board of Trustees determines that amortized cost reflects fair
value. In the event that amortized cost does not approximate market, market
prices as determined above will be used. Other assets and securities, for which
no quotations are readily available (including restricted securities), and, to
the extent permitted by the SEC, securities for which the value has been
materially affected by events occurring after the close of the market on which
they principally trade, will be valued in good faith at fair value using methods
approved by the Board of Trustees.

Balanced and Multi-Asset-Class Portfolios: Net asset value per share is computed
by dividing the total value of the investments and other assets of the
portfolio, less any liabilities, by the total outstanding shares of the
portfolio. The net asset value per share of the Balanced and Multi-Asset-Class
Portfolios is determined as of the later of the close of the NYSE or one hour
after the close of the bond markets on each day the portfolios are open for
business. Equity, fixed-income and other securities held by the portfolios will
be valued using the policies described above.

All Portfolios: Net asset value per share for Investment Class Shares,
Institutional Class Shares and Adviser Class Shares may differ due to
class-specific expenses paid by each class, and the shareholder servicing fees
charged to Investment Class Shares and distribution fees charged to Adviser
Class Shares.

DIVIDENDS, DISTRIBUTIONS AND TAXES: Dividends and Distributions: The Fund
maintains different dividend and capital gain distribution policies for each
portfolio. These are:

o The Equity, Value, Domestic Fixed Income, Fixed Income, High Yield, Balanced
and Multi-Asset-Class Portfolios normally distribute substantially all of their
net investment income to shareholders on a quarterly basis.

o The International Equity and Mid Cap Value Portfolios normally distribute
substantially all of their net investment income on an annual basis.

If any portfolio does not have income available to distribute, as determined in
compliance with the appropriate tax laws, no distribution will be made.

If any net capital gains are realized from the sale of underlying securities,
the portfolios normally distribute such gains with the last distributions for
the calendar year.

All dividends and distributions are automatically paid in additional shares of
the portfolio unless the shareholder elects otherwise. Such election must be
made in writing to the Fund and may be made on the Account Registration Form.

In all portfolios undistributed net investment income is included in the
portfolio's net assets for the purpose of calculating net asset value per share.
Therefore, on the ex-dividend date, the net asset value per share excludes the
dividend (i.e., is reduced by the per share amount of the dividend). Dividends
paid shortly after the purchase of shares by an investor, although in effect a
return of capital, are taxable as ordinary income.

Certain Mortgage Securities may provide for periodic or unscheduled payments of
principal and interest as the mortgages underlying the securities are paid or
prepaid. However, such principal payments (not otherwise characterized as
ordinary discount income or bond premium expense) will not normally be
considered as income to the portfolio and therefore will not be distributed as
dividends. Rather, these payments on mortgage-backed securities will be
reinvested on behalf of the shareholders by the portfolio in accordance with its
investment objectives and policies.

TAXES: The following is a summary of some important tax issues that affect the
portfolios of the Fund and their shareholders. The summary is based on current
tax laws and regulations, which may be changed by legislative, judicial or
administrative action. No attempt has been made to present a detailed
explanation of the tax treatment of each portfolio or its shareholders. More
information about taxes is in the Statement of Additional Information.
Shareholders are urged to consult their tax advisors regarding specific
questions as to federal, state and local income taxes.
    

Federal Taxes: Each portfolio of the Fund is treated as a separate entity for
federal income tax purposes and intends to qualify for the special tax treatment
afforded regulated investment companies. As such, each portfolio will not be
subject to federal income tax to the extent it distributes net investment
company taxable income and net capital gains to shareholders. The Fund will
notify shareholders annually as to the tax classification of all distributions.


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MAS Fund - 36         Terms in bold type are defined in the Prospectus Glossary

<PAGE>




   
Income dividends received by shareholders will be taxable as ordinary income,
whether received in cash or in additional shares. In the case of the Equity,
Value, Balanced, Multi-Asset-Class and Mid Cap Value Portfolios, corporate
shareholders may be entitled to a dividends-received deduction for the portion
of dividends they receive which are attributable to dividends received by such
portfolios from U.S. corporations. Capital gains distributions are taxable to
shareholders at capital gains rates. Each portfolio will designate capital gains
distributions to individual shareholders as either subject to the federal
capital gains rate imposed on property held for more than 18 months or on
property held for more than 1 year but not more than 18 months.

Distributions paid in January but declared by a portfolio in October, November
or December of the previous year are taxable to shareholders in the previous
year.

Each portfolio intends to declare and pay dividends and distributions so as to
avoid imposition of the federal excise tax applicable to regulated investment
companies. Further discussion is included in the Statement of Additional
Information.

The Fund is required by federal law to withhold 31% of reportable payments
(which may include dividends and capital gains distributions) paid to
shareholders. In order to avoid this withholding requirement, shareholders must
certify on their Account Registration Forms that their Social Security Number or
Taxpayer Identification Number is correct, and that they are not subject to
backup withholding.
    

Exchanges and redemptions of shares in a portfolio are taxable events.

   
Foreign Income Taxes: Investment income received by the portfolios from sources
within foreign countries may be subject to foreign income taxes withheld at
source. The International Equity and Multi-Asset-Class Portfolios may be able to
file an election with the Internal Revenue Service to pass through to their
shareholders for foreign tax credit purposes the amount of foreign income taxes
paid by each portfolio. Further discussion is included in the Statement of
Additional Information. The other portfolios of the Fund will not be able to
make this election.

State and Local Income Taxes: The Fund is formed as a Pennsylvania Business
Trust and is not liable for any corporate income or franchise tax in the
Commonwealth of Pennsylvania. Shareholders should consult their tax advisors for
the state and local income tax consequences of distributions from the portfolio.

TRUSTEES OF THE TRUST: The affairs of the Trust are supervised by the Trustees
under the laws governing business trusts in the Commonwealth of Pennsylvania.
The Trustees have approved contracts under which, as described above, certain
companies provide essential management, administrative and shareholder services
to the Trust.

INVESTMENT ADVISER: The Investment Adviser to the Fund, Miller Anderson &
Sherrerd, LLP (the "Adviser"), is a Pennsylvania limited liability partnership
founded in 1969, wholly owned by indirect subsidiaries of Morgan Stanley, Dean
Witter, Discover & Co., and is located at One Tower Bridge, West Conshohocken,
PA 19428. The Adviser provides investment services to employee benefit plans,
endowment funds, foundations and other institutional investors and as of
December 31, 1997 had in excess of $58.1 billion in assets under management. On
May 31, 1997, Morgan Stanley Group Inc., then the indirect parent of the
Adviser, merged with Dean Witter, Discover & Co. to form Morgan Stanley, Dean
Witter, Discover & Co. In connection with this transaction, the Adviser entered
into a new Investment Management Agreement ("Agreement") with MAS Funds dated
May 31, 1997, which Agreement was approved by the shareholders of each portfolio
at a special meeting held on May 1, 1997 or at an adjournment of such meeting
held on May 12, 1997. The Adviser will retain its name and remain at its current
location, One Tower Bridge, West Conshohocken, PA 19428. The Adviser will
continue to provide investment counseling services to employee benefit plans,
endowments, foundations and other institutional investors.
    

Under the Agreement with the Fund, the Adviser, subject to the control and
supervision of the Fund's Board of Trustees and in conformance with the stated
investment objectives and policies of each portfolio of the Fund, manages the
investment and reinvestment of the assets of each portfolio of the Fund. In this
regard, it is the responsibility of the Adviser to make investment decisions for
the Fund's portfolios and to place each portfolio's purchase and sales orders.
As compensation for the services rendered by the Adviser under the Agreement,
each portfolio pays the 

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 37

<PAGE>



   
Adviser an advisory fee calculated by applying a quarterly rate. The following
table shows the Adviser's contractual rate (annualized) along with the Adviser's
actual rate of compensation for the Fund's 1997 fiscal year.

                                                              FY 1997
                                        Contractual           Actual
                                           Rate          Compensation Rate
                                        -----------      -----------------
Equity Portfolio                           .500%               .500%
International Equity Portfolio             .500                .500
Mid Cap Value Portfolio                    .750                .727
Value Portfolio                            .500                .500
Domestic Fixed Income Portfolio            .375                .364
Fixed Income Portfolio                     .375                .375
High Yield Portfolio                       .375                .375
Balanced Portfolio                         .450                .450
Multi-Asset-Class Portfolio                .650                .528
                                                                
The Adviser is, on a voluntary basis, waiving a portion of its fee and/or
reimbursing certain expenses for the Multi-Asset-Class Portfolio. Absent such
waivers and/or reimbursements by the Adviser, Total Operating Expenses would be
0.986%. These fee waivers and expense reimbursements are voluntary and may be
discontinued at any time at the Adviser's discretion.
    

- --------------------------------------------------------------------------------
MAS Fund - 38          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



PORTFOLIO MANAGEMENT

   
A description of the business experience during the past five years for each of
the investment professionals who are primarily responsible for the day-to-day
management of the Fund's portfolios is as follows:
    

Robert E. Angevine, Principal, Morgan Stanley, joined Morgan Stanley Asset
Management in 1988. He assumed responsibility for the High Yield Portfolio in
1996.

Arden C. Armstrong, Managing Director, Morgan Stanley, joined MAS in 1986. She
assumed responsibility for the Mid Cap Growth Portfolio in 1990, the Growth
Portfolio in 1993 and the Equity Portfolio in 1994.

   
Richard M. Behler, Principal, Morgan Stanley, joined MAS in 1995. He served as a
Portfolio Manager from 1992 through 1995 for Moore Capital Management. He
assumed responsibility for the Value Portfolio in 1996.

Thomas L. Bennett, Managing Director, Morgan Stanley, joined MAS in 1984. He
assumed responsibility for the Fixed Income Portfolio in 1984, the Domestic
Fixed Income Portfolio 1987, the High Yield Portfolio in 1985, the Fixed Income
Portfolio II in 1990, the Special Purpose Fixed Income and Balanced Portfolio in
1992, the Balanced Plus Portfolio in 1996, the Multi-Asset-Class Portfolio in
1994 and the Multi-Market Fixed Income Portfolio in 1997.

Bradley S. Daniels, Vice President, Morgan Stanley, joined MAS in 1985. He
assumed responsibility for the Small Cap Value Portfolio in 1986 and the Mid Cap
Value Portfolio in 1994.

Kenneth B. Dunn, Managing Director, Morgan Stanley, joined MAS in 1987. He
assumed responsibility for the Fixed Income and the Domestic Fixed Income
Portfolios in 1987, the Fixed Income II Portfolio in 1990, the Mortgage-Backed
Securities and Special Purpose Fixed Income Portfolios in 1992, and the
Municipal, PA Municipal Portfolios in 1994 and the Multi-Market Fixed Income
Portfolio in 1997.

Hassan Elmasry, Principal, Morgan Stanley, joined MAS in 1995. He served as
First Vice President & International Equity Portfolio Manager from 1987 through
1995 for Mitchell Hutchins Asset Management. He assumed responsibility for the
International Equity Portfolio in 1996.

Stephen F. Esser, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the High Yield Portfolio in 1989 and the Multi-Market
Fixed Income Portfolio in 1997.

William B. Gerlach, Vice President, Morgan Stanley, joined MAS in 1991. He
assumed responsibility for the Small Cap Value and Mid Cap Value Portfolios in
1996.

J. David Germany, Managing Director, Morgan Stanley, joined MAS in 1991. He
assumed responsibility for the Global Fixed Income and International Fixed
Income Portfolios in 1993, the Balanced Plus Portfolio in 1996, the
Multi-Asset-Class Portfolio in 1994 and the Multi-Market Fixed Income Portfolio
in 1997.

Ellen D. Harvey, Principal, Morgan Stanley, joined MAS in 1984. She assumed
responsibility for the Cash Reserves Portfolio in 1990, the Limited Duration
Portfolio in 1992 and the Intermediate Duration Portfolio in 1994.

James J. Jolinger, Vice President, Morgan Stanley, joined MAS in 1994. He served
as Equity Analyst for Oppenheimer Capital from 1987-1994. He assumed
responsibility for the Equity Portfolio in 1997.
    

Nicholas J. Kovich, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the Equity Portfolio in 1994 and the Value Portfolio
in 1997.

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 39

<PAGE>



   
Brian Kramp, Vice President, Morgan Stanley, joined MAS in 1997. He served as
Analyst/Portfolio Manager for Meridian Asset Management, and its successor,
Corestates Investment Advisors from 1985 - 1997. He assumed responsibility for
the Value and Equity Portfolios in 1998.

Chris Leavy, Morgan Stanley, joined Mas in 1997. He served as a Portfolio
Manager for Capitoline Investment Services from 1995-1997; a Portfolio Manager
for Premium Trust Company from 1994-1995; and as a Research Analyst for Leavy
Investment Management from 1993-1994. He assumed responsibility for the Mid Cap
Value and Small Cap Value Portfolio in 1998.
    

Robert J. Marcin, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the Value Portfolio in 1990 and the Equity Portfolio
in 1994.

   
Gary G. Schlarbaum, Managing Director, Morgan Stanley; Director, MAS Fund
Distribution, Inc.; joined MAS in 1987. He assumed responsibility for the Equity
and Small Cap Value Portfolios in 1987, the Growth Portfolio in 1993, the
Balanced Portfolio in 1992 and the Multi-Asset-Class and Mid Cap Value
Portfolios in 1994.

Horacio A. Valeiras, Principal, Morgan Stanley, joined MAS in 1992. He assumed
responsibility for the International Equity Portfolio in 1992, the Emerging
Markets Value Portfolio in 1993, the Multi-Asset-Class Portfolio in 1994 and the
Balanced Portfolio in 1996.

Richard B. Worley, Managing Director, Morgan Stanley, joined MAS in 1978. He
assumed responsibility for the Fixed Income Portfolio in 1984, the Domestic
Fixed Income Portfolio in 1987, the Fixed Income Portfolio II in 1990, the
Balanced and Special Purpose Fixed Income Portfolios in 1992, the Balanced Plus
Portfolio in 1996, the Global Fixed Income and International Fixed Income
Portfolios in 1993, the Multi-Asset-Class Portfolio in 1994 and the Multi-Market
Fixed Income Portfolio in 1997.
    

ADMINISTRATIVE SERVICES: MAS serves as Administrator to the Fund pursuant to an
Administration Agreement dated as of November 18, 1993. Under its Administration
Agreement with the Fund, MAS receives an annual fee, accrued daily and payable
monthly, of 0.08% of the Fund's average daily net assets, and is responsible for
all fees payable under any sub-administration agreements. Chase Global Funds
Services Company, a subsidiary of The Chase Manhattan Bank, 73 Tremont Street,
Boston MA 02108-3913, serves as Transfer Agent to the Fund pursuant to an
agreement also dated as of November 18, 1993, and provides fund accounting and
other services pursuant to a sub-administration agreement with MAS as
Administrator.

   
GENERAL DISTRIBUTION AGENT: Shares of the Fund are distributed exclusively
through MAS Fund Distribution, Inc., a wholly-owned subsidiary of the Adviser.

SERVICE PLAN: The Board of Trustees of the Fund has approved a Service Plan (the
"Service Plan") pursuant to which the Distributor may compensate Service
Providers for providing shareholder support services to clients who purchase
Investment Class Shares. For this service, such Service Providers are
compensated at an annual rate of .15% of the average net assets of the
Investment Class Shares of each portfolio. Fees paid pursuant to the Service
Plan are separate fees of the Investment Class Shares of each portfolio and will
reduce the net investment income and total return of the Investment Class Shares
of these portfolios.

PORTFOLIO TRANSACTIONS: The investment advisory agreement authorizes the Adviser
to select the brokers or dealers that will execute the purchases and sales of
investment securities for each of the Fund's portfolios and directs the Adviser
to use its best efforts to obtain the best execution with respect to all
transactions for the portfolios. In doing so, a portfolio may pay higher
commission rates or markups on principal transactions than the lowest available
when the Adviser believes it is reasonable to do so in light of the value of the
research, statistical, and pricing services provided by the broker or dealer
effecting the transaction.
    

It is not the Fund's practice to allocate brokerage or principal business on the
basis of sales of shares which may be made through intermediary brokers or
dealers. However, the Adviser may place portfolio orders with qualified
broker-dealers who recommend the Fund's Portfolios or who act as agents in the
purchase of shares of the portfolios for their clients. 

- --------------------------------------------------------------------------------
MAS Fund - 40         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
Some securities considered for investment by each of the Fund's portfolios may
also be appropriate for other clients served by the Adviser. The Adviser may
place a combined order for two or more accounts or portfolios for the purchase
or sale of one same security if, in its judgement, joint execution is in the
best interest of each participant and will result in best price and excution. If
purchase or sale of securities consistent with the investment policies of a
portfolio and one or more of these other clients served by the Adviser is
considered at or about the same time, transactions in such securities will be
allocated among the portfolio and clients in a manner deemed fair and reasonable
by the Adviser. Although there is no specified formula for allocating such
transactions, the various allocation methods used by the Adviser, and the
results of such allocations, are subject to periodic review by the Fund's
Trustees. The Adviser may use its broker dealer affiliates, including Morgan
Stanley & Co., a wholly owned subsidiary of Morgan Stanley, Dean Witter,
Discover & Co., the parent of MAS's general partner and limited partner, to
carry out the Fund's transactions, provided the Fund receives brokerage services
and commission rates comparable to those of other broker dealers.

OTHER INFORMATION: Description of Shares and Voting Rights: The Fund was
established under Pennsylvania law by a Declaration of Trust dated February 15,
1984, as amended and restated as of November 18, 1993. The Fund is authorized to
issue an unlimited number of shares of beneficial interest, without par value,
from an unlimited number of series (portfolios) of shares. Currently the Fund
consists of twenty-seven portfolios.
    

The shares of each portfolio of the Fund are fully paid and non-assessable, and
have no preference as to conversion, exchange, dividends, retirement or other
features. The shares of each portfolio of the Fund have no preemptive rights.
The shares of the Fund have non-cumulative voting rights, which means that the
holders of more than 50% of the shares voting for the election of Trustees can
elect 100% of the Trustees if they choose to do so. Shareholders are entitled to
one vote for each full share held (and a fractional vote for each fractional
share held), then standing in their name on the books of the Fund.

   
Meetings of shareholders will not be held except as required by the 1940 Act and
other applicable law. A meeting will be held to vote on the removal of a Trustee
or Trustees of the Fund if requested in writing by the holders of not less than
10% of the outstanding shares of the Fund. The Fund will assist in shareholder
communication in such matters to the extent required by law.

As of January 5, 1998 Northern Trust Company (Chicago, IL) owned a controlling
interest (as that term is defined by the 1940 Act) of the Balanced Portfolio.

Custodians: The Chase Manhattan Bank, New York, NY and Morgan Stanley Trust
Company (NY), Brooklyn, NY serve as custodians for the Fund. The custodians hold
cash, securities and other assets as required by the 1940 Act.
    

Transfer and Dividend Disbursing Agent: Chase Global Funds Services Company, a
subsidiary of The Chase Manhattan Bank, 73 Tremont Street, Boston, MA
02108-3913, serves as the Funds' Transfer Agent and dividend disbursing agent.

Reports: Shareholders receive semi-annual and annual financial statements.
Annual financial statements are audited by Price Waterhouse LLP, independent
accountants.

Litigation: The Fund is not involved in any litigation.

   
Closed Holidays: Currently, the weekdays on which the Fund is closed for
business are: New Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good
Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and
Christmas Day. 

TRUSTEES AND OFFICERS

The following is a list of the Trustees and the principal executive officers of
the Fund and a brief statement of their present positions and principal
occupations during the past five years: 
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 41

<PAGE>



   
Thomas L. Bennett,* Chairman of the Board of Trustees; Managing Director, Morgan
Stanley; Portfolio Manager and member of the Executive Committee, Miller
Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.; formerly
Director, Morgan Stanley Universal Funds, Inc.

Thomas P. Gerrity, Trustee; Dean and Reliance Professor of Management and
Private Enterprise, Wharton School of Business, University of Pennsylvania;
Director, Digital Equipment Corporation; Director, Sun Company, Inc.; Director,
Fannie Mae; Director, Reliance Group Holdings; Director, CVS Corporation;
Director, Union Carbide Corporation.
    

Joseph P. Healey, Trustee; Headmaster, Haverford School; formerly Dean, Hobart
College; Associate Dean, William & Mary College.

Joseph J. Kearns, Trustee; Vice President and Treasurer, The J. Paul Getty
Trust; Director, Electro Rent Corporation; Trustee, Southern California Edison
Nuclear Decommissioning Trust; Director, The Ford Family Foundation.

Vincent R. McLean, Trustee; Director, Legal and General America, Inc., Director,
William Penn Life Insurance Company of New York; formerly Executive Vice
President, Chief Financial Officer, Director and Member of the Executive
Committee of Sperry Corporation (now part of Unisys Corporation).

C. Oscar Morong, Jr., Trustee; Managing Director, Morong Capital Management;
Director, Ministers and Missionaries Benefit Board of American Baptist Churches,
The Indonesia Fund, The Landmark Funds; formerly Senior Vice President and
Investment Manager for CREF, TIAA-CREF Investment Management, Inc.

*Trustee Bennett is deemed to be an "interested person" of the Fund as that term
is defined in the Investment Company Act of 1940, as amended.

- --------------------------------------------------------------------------------

   
James D. Schmid, President, MAS Funds; Principal, Morgan Stanley; Head of Mutual
Funds, Miller Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.;
Chairman of the Board of Directors, The Minerva Fund, Inc.; formerly Vice
President, The Chase Manhattan Bank.
    

Lorraine Truten, CFA, Vice President, MAS Funds; Principal, Morgan Stanley; Head
of Mutual Fund Services, Miller Anderson & Sherrerd, LLP; President, MAS Fund
Distribution, Inc.

   
John H. Grady, Jr., Secretary, MAS Funds; Partner, Morgan, Lewis & Bockius LLP;
formerly Attorney, Ropes & Gray.
    

- --------------------------------------------------------------------------------
MAS Fund - 42         Terms in bold type are defined in the Prospectus Glossary

<PAGE>


<TABLE>
<S>                            <C>   
- ------------------------------------------------------------------------------------------------------------------------------------
  MAS                                              ACCOUNT REGISTRATION FORM
- ---------
MAS FUNDS                                         Mas Fund Distribution, Inc.   
                                                   General Distribution Agent   
- ------------------------------------------------------------------------------------------------------------------------------------
(1) 
REGISTRATION/PRIMARY           |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
MAILING ADDRESS 
                               |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|

                               Attention |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
Confirmations and month-end
statements will be mailed to   Street or P.O. Box  |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
this address.
                               City  |_|_|_|_|_|_|_|_|_|  State |_|_|  Zip |_|_|_|_|_|-|_|_|_|_|

                               Telephone No. |_|_|_|-|_|_|_|_|-|_|_|_|_|

                               Form of Business Entity: |_| Corporation  |_| Partnership  |_| Trust  |_| Other______________________

                               Type of Account:|_| Defined Benefit Plan |_| Defined Contribution Plan |_| Profit Sharing/Thrift Plan
                                                                                                               
                                               |_| Other Employee Benefit Plan _____________________________________________________

                                               |_| Endowment |_| Foundation  |_| Taxable  |_| Other (Specify)_______________________

      |_| United State Citizen  |_| Resident Alien  |_| Non-Resident Alien, Indicate Country of Residence __________________________

   
- ------------------------------------------------------------------------------------------------------------------------------------
(2)
INTERESTED PARTY
OPTION                         Attention  |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_

In addition to the account     Company 
statement sent to the above    (If Applicable)  |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_
registered address, the Fund   
is authorized to mail          Street or P.O. Box |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_
duplicate statements to the
name and address provided at   City  |_|_|_|_|_|_|_|_|_|  State |_|_|  Zip |_|_|_|_|_|-|_|_|_|_|
right

For additional interested      Telephone No. |_|_|_|-|_|_|_|_|-|_|_|_|_|
party mailings, please attach
a separate sheet.
- ------------------------------------------------------------------------------------------------------------------------------------
(3)
INVESTMENT                     |_| Equity Portfolio                        $__________________________________
For Purchase of:               |_| International Equity Portfolio          $__________________________________
                               |_| Mid Cap Value Portfolio                 $__________________________________
                               |_| Value Portfolio                         $__________________________________
                               |_| Domestic Fixed Income Portfolio         $__________________________________
                               |_| Fixed Income Portfolio                  $__________________________________
                               |_| High Yield Portfolio                    $__________________________________
                               |_| Balanced Portfolio                      $__________________________________
                               |_| Multi-Asset-Class Portfolio             $__________________________________

- ------------------------------------------------------------------------------------------------------------------------------------
    
(4)  TAXPAYER IDENTIFICATION NUMBER                           IMPORTANT TAX INFORMATION     
     Part 1.                                                                    
                                            You (as a payee) are required by law to provide us (as payer)     
      Social Security Number                with your correct taxpayer identification number. Accounts that  
     |_|_|_|-|_|_|-|_|_|_|_|                have a missing or incorrect taxpayer identification number will   
                                            be subject to backup withholding at a 31% rate on ordinary income 
               or                           and capital gains distribution as well as redemptions. Backup 
                                            withholding is not an additional tax; the tax liability of person 
  Employer Identification Number            subjects to backup withholding will be reduced by the amount of   
      |_|_|-|_|_|_|_|_|_|_|                 tax withheld.                                                     
                                                                                                              
                                            You may be notified that you are subject to backup withholding    
Part 2. BACKUP WITHHOLDING                  under section 3406(a)(1)(C) because you have underreported        
|_| Check the box if the account is         interest or dividends or you were required to, but failed to,     
subject to Backup Withholding under the     file a return which would have included a reportable interest or  
provisions of Section 340(a)(1)(C) of       dividend payment. If you have been so notified, check the box in 
the Internal Revenue Code.                  PART 2 at left.                                                    
                                                                                                              
 -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
MILLER
ANDERSON
& SHERRERD, LLP    ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- --------------------------------------------------------------------------------
                                                                 SIDE ONE OF TWO

<PAGE>

- --------------------------------------------------------------------------------
  MAS     
- ---------                                                                 
MAS FUNDS       
- --------------------------------------------------------------------------------

(5)  TELEPHONE REDEMPTION OPTION
          
Please sign below if you wish to redeem or exchange shares by telephone.
Redemption proceeds requested by phone may only be mailed to the account's
primary registration address or wired according to bank instructions provided in
writing. A signature guarantee is required if the bank account listed below is
not registered identically to your Fund Account. 

The Fund and its agents shall not be liable for reliance on phone instructions
reasonably believed to be genuine. The Fund will maintain procedures designed to
authenticate telephone instructions received.

Telephone  requests  for  redemptions  or exchanges  will not be honored  unless
signature appears below.

(X)________________________________________________________
Signature                                              Date
- --------------------------------------------------------------------------------

(6) WIRING INSTRUCTIONS -- The instructions provided below may only be changed
by written notification. Please check appropriate box(es):

|_| Wire redemption proceeds
|_| Wire distribution proceeds (please complete box 7 below)


____________________________________________________   _________________________
      Name of Commercial Bank (Net Savings Bank)           Bank Account No.


________________________________________________________________________________
                Name(s) in which your Bank Account is Established


________________________________________________________________________________
                              Bank's Street Address


____________________________________________________   _________________________
  City                  State               Zip            Routing/ABA  Number

- --------------------------------------------------------------------------------

(7)  DISTRIBUTION OPTION -- Income dividends and capital gains distributions (if
     any) will be reinvested in additional shares if no box is checked below.
     The instructions provided below may only be changed by written
     notification.

     |_|  Income dividends and capital gains to be paid in cash.

     |_|  Income dividends to be paid in cash and capital gains distribution in
          additional shares.

     |_|  Income dividends and capital gains to be reinvested in additional
          shares.

     If cash option is chosen, please indicate instructions below:

     |_|  Mail distribution check to the name and address in which account is
          registered.

     |_|  Wire distribution to the same commercial bank indicated in Section 6
          above.
- --------------------------------------------------------------------------------

(8)  WIRING INSTRUCTIONS

For purchasing Shares by wire, please send a Fedwire payment to:

The Chase Manhattan Bank
1 Chase Manhattan Plaza
New York, NY 10081
ABA# 021000021
DDA# 910-2-734143
Attn: MAS Funds
Subscription Account
Ref. (Portfolio name, your Account number, your Account name)
- --------------------------------------------------------------------------------

SIGNATURE(S) OF ALL HOLDERS AND TAXPAYER CERTIFICATION

The undersigned certify that I/we have full authority and legal capacity to
purchase shares of the Fund and affirm that I/we have received a current MAS
Funds Prospectus and agree to be bound by its terms. Under penalties of perjury
I/we certify that the information provided in Section 4 above is true, correct
and complete. The Internal Revenue Service does not require your consent to any
provision of this document other than the certifications required to avoid
backup withholding.

(X)_________________________________________________
Signature                                       Date

(X)_________________________________________________
Signature                                       Date

(X)_________________________________________________
Signature                                       Date

(X)_________________________________________________
Signature                                       Date

                This application is separate from the prospectus.

- --------------------------------------------------------------------------------
                             FOR INTERNAL USE ONLY

              (X)_________________________________________________
                 Signature                                    Date

               _________________________________________________

                  O |__|       F |__|    OR |__|       S |__|
- --------------------------------------------------------------------------------

MILLER
ANDERSON
& SHERRERD, LLP    ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- --------------------------------------------------------------------------------
                                                                 SIDE TWO OF TWO


<PAGE>


   
   MAS                                             INVESTMENT CLASS PROSPECTUS
- ---------
MAS FUNDS
                                January 31, 1998

     Investment Adviser and Adminstrator:    Transfer Agent:

     Miller Anderson & Sherrerd, LLP         Chase Global Fund Services Company
     One Tower Bridge                        73 Tremont Street
     West Conshohocken                       Boston, Massachusetts 02108-0913
     Pennsylvania 19428-2899

                           General Distribution Agent:

                           MAS Fund Distribution, Inc.
                           One Tower Bridge
                           P.O. Box 868
                           West Conshohocken,
                           Pennsylvania 19428-0868

- --------------------------------------------------------------------------------

Table of Contents
                                                              Page
              Fund Expenses                                      2
              Prospectus Summary                                 4
              Financial Highlights                               6
              Yield and Total Return                             9
              Suitability                                        9
              Investment Limitations                            10
              Portfolio Summaries                               11
              Equity Investments                                11
              Fixed-Income Investments                          14
              Propectus Glossary                                
                 Strategies                                     19
                 Investments                                    22
              General Shareholder Information                   
                 Purchase of Shares                             32
                 Redemption of Shares                           33
                 Shareholder Services                           34
                 Valuation of Shares                            35
                 Dividends, Distributions and Taxes             36
              Investment Adviser                                37
              Portfolio Management                              39
              Administrative Services                           40
              General Distribution Agent                        40
              Portfolio Transactions                            40
    

MILLER
ANDERSON
& SHERRERD, LLP    ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185

<PAGE>

- --------------------------------------------------------------------------------
  MAS                       ADVISER CLASS PROSPECTUS                      
- ---------
MAS FUNDS
   
                                January 31, 1998

- --------------------------------------------------------------------------------
Client Services: 1-800-354-8185    Prices and Investment Results: 1-800-522-1525
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
MAS Funds (the Fund) is a no-load mutual fund consisting of twenty-seven
portfolios, ten of which are described in this Prospectus. This Prospectus
offers the Adviser Class Shares of these ten portfolios.
- --------------------------------------------------------------------------------
    
- --------------------------------------------------------------------------------
The High Yield Portfolio will invest primarily, and certain other portfolios of
the Fund may invest to varying degrees, in high yield, high risk securities
which are speculative with regard to payment of interest and return of principal
(commonly referred to as junk bonds); therefore, investments in these portfolios
may not be suitable for all investors. See High Yield Investing in the Glossary
of Strategies for additional information regarding certain risks associated with
investment in such securities.
- --------------------------------------------------------------------------------

   
                            PORTFOLIO PAGE REFERENCE
                            ------------------------

                        How to Use This Prospectus:    3

                        Portfolio Summaries:
                        Equity:
                            Equity                    12
                            International Equity      13
                            Mid Cap Growth            14
                            Mid Cap Value             15
                            Value                     16

                        Fixed Income:
                            Domestic Fixed Income     17
                            Fixed Income              18
                            High Yield                19

                        Balanced:
                            Balanced:                 20
                            Multi-Asset-Class         21

                        Prospectus Glossary:
                            Strategies                22
                            Investments               27

                        General Shareholder
                            Information:              40

                        Table of Contents:            Back Cover

- --------------------------------------------------------------------------------
This Prospectus, which should be retained for future reference, sets forth
concisely information that you should know before you invest. A Statement of
Additional Information containing additional information about the Fund has been
filed with the Securities and Exchange Commission. Such Statement is dated
January 31, 1998 as revised from time to time, and has been incorporated by
reference into this Prospectus. A copy of the Statement may be obtained, without
charge, by writing to the Fund or by calling the Client Services Group at the
telephone number shown above.
- --------------------------------------------------------------------------------

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

Miller
Anderson
& Sherrerd, LLP    ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- --------------------------------------------------------------------------------

<PAGE>


EXPENSE SUMMARY -- ADVISER CLASS SHARES

   
The following tables illustrate the various expenses and fees that a shareholder
in a portfolio will incur either directly or indirectly. The Adviser may from
time to time waive fees or reimburse expenses thereby reducing total operating
expenses.
    

  Shareholder Transaction Expenses:
  Sales Load Imposed on Purchases                                        None
  Sales Load Imposed on Reinvested Dividends                             None
  Redemption Fees                                                        None
  Exchange Fees                                                          None

   
  Annual Fund Operating Expenses:
  (as a percentage of average net assets after fee waivers)
  12b-1 Fees                                                           0.25%
  Shareholder Servicing Fee                                             None

                                         Investment                      Total
                                          Advisory         Other       Operating
           Portfolio                       Fees          Expenses       Expenses
- --------------------------------------------------------------------------------
Equity                                     0.500%         0.350%         0.850%
International Equity                       0.500          0.400          0.900
Mid Cap Growth                             0.500          0.380          0.880
Mid Cap Value                              0.750          0.380          1.130
Value                                      0.500          0.350          0.850
Domestic Fixed Income                      0.375          0.375          0.750
Fixed Income                               0.375          0.355          0.730
High Yield                                 0.375          0.375          0.750
Balanced                                   0.450          0.380          0.830
Multi-Asset-Class                          0.594*         0.436          1.030

The Total Operating Expense ratios reflected in the table above may be higher
than the ratio of expenses actually deducted from portfolio assets because of
the effect of expense offset arrangements. The result of such arrangements is to
offset expenses that otherwise would be deducted from portfolio assets. The
amounts in the above table have been restated to reflect current fees and
expenses.
*The Adviser is, on a voluntary basis, waiving a portion of its fee and/or
 reimbursing certain expenses for the Multi-Asset-Class Portfolio. Absent such
 waivers and/or reimbursements by the Adviser, Total Operating Expenses would be
 1.086%. These fee waivers and expense reimbursements are voluntary and may be
 discontinued at any time at the Adviser's discretion.
    


- --------------------------------------------------------------------------------
MAS Fund - 2           Terms in bold type are defined in the Prospectus Glossary

<PAGE>


EXAMPLE

   
The purpose of this table is to assist in understanding the various expenses
that a shareholder in a portfolio will bear directly or indirectly. The
following example illustrates the expenses that an investor would pay on a
$1,000 investment over various time periods assuming (1) a 5% annual rate of
return, and (2) redemption at the end of each time period. The example should
not be considered a representation of past or future expenses and actual
expenses may be greater or less than those shown.

          Portfolio                     1 year     3 year     5 year    10 year
- --------------------------------------------------------------------------------
Equity                                  $  9       $ 27       $ 47       $105
International Equity                       9         29         50        111
Mid Cap Growth                             9         28         49        108
Mid Cap Value                             12         36         62        137
Value                                      9         27         47        105
Domestic Fixed Income                      8         24         42         93
Fixed Income                               7         23         41         91
High Yield                                 8         24         42         93
Balanced                                   8         26         46        103
Multi-Asset Class                         11         33         57        126
- --------------------------------------------------------------------------------

                           HOW TO USE THIS PROSPECTUS

A PROSPECTUS SUMMARY begins on page 4;

FINANCIAL HIGHLIGHTS and a description of YIELD AND TOTAL RETURN begin on page
6;

GENERAL INFORMATION including INVESTMENT LIMITATIONS pertinent to all portfolios
begins on page 9;

SUMMARY PAGES for each portfolio's Objective, Policies and Strategies begin on
page 12;

The PROSPECTUS GLOSSARY which defines specific Allowable Investments, Policies
and Strategies printed in bold type throughout this Prospectus begins on page
22; and

GENERAL SHAREHOLDER INFORMATION begins on page 40.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 3

<PAGE>


SUMMARY INFORMATION:

   
The following information relates to each portfolio of the Fund and should be
read in conjunction with the specific information about each portfolio.

OBJECTIVES: Each portfolio seeks to achieve its investment objective relative to
the universe of securities in which it is authorized to invest and, accordingly,
the total return or current income achieved by a portfolio may not be as great
as that achieved by another portfolio that can invest in a broader range of
securities. Fixed-income portfolios will seek to produce total return by
actively trading portfolio securities. The objective of each portfolio is
fundamental and may only be changed with approval of holders of a majority of
the shares of each portfolio. The achievement of any portfolio's objective
cannot be assured.

RISK FACTORS: Prospective investors in the Fund should consider the following
factors as they apply to each portfolio's allowable investments and policies.
See the Prospectus Glossary for more information on terms printed in bold type:

o    Each portfolio may invest in Repurchase Agreements, which entail a risk of
     loss should the seller default in its obligation to repurchase the security
     which is the subject of the transaction;

o    Each portfolio may participate in a Securities Lending program which
     entails a risk of loss should a borrower fail financially;

o    Fixed-Income Securities will be affected by general changes in interest
     rates resulting in increases or decreases in the value of the obligations
     held by a portfolio. The value of Fixed-Income Securities can be expected
     to vary inversely to changes in prevailing interest rates, i.e., as
     interest rates decline, market value tends to increase and vice versa.
     Certain Fixed Income Securities may be highly sensitive to interest rate
     changes, and highly sensitive to the rate of principal payments (including
     prepayments on underlying mortgage assets). Investments in securities rated
     below investment grade, generally referred to as High Yield, high risk or
     junk bonds, carry a high degree of credit risk and are considered
     speculative by the major rating agencies;

o    Common Stocks are subject to market risks which may cause their prices to
     fluctuate over time. Changes in the value of portfolio securities will not
     necessarily affect cash income derived from these securities, but will
     affect a portfolio's net asset value;

o    Investments in foreign securities involve certain special considerations
     which are not typically associated with investing in U.S. companies.
     Portfolios investing in foreign securities may also engage in foreign
     currency exchange transactions. See Forwards, Futures & Options, and Swaps;
    


- --------------------------------------------------------------------------------
MAS Fund - 4           Terms in bold type are defined in the Prospectus Glossary

<PAGE>


   
o    Securities purchased on a when-issued basis may decline or appreciate in
     market value prior to their actual delivery to the portfolio;

o    Each portfolio may invest a portion of its assets in Derivatives including
     Futures & Options. Futures contracts, options and options on futures
     contracts entail certain costs and risks, including imperfect correlation
     between the value of the securities held by the portfolio and the value of
     the particular derivative instrument, and the risk that a portfolio could
     not close out a futures or options position when it would be most
     advantageous to do so; and

o    Each portfolio may invest in certain instruments such as Forwards, certain
     types of Futures & Options, certain types of Mortgage Securities and
     When-Issued Securities which require the portfolio to segregate some or all
     of its cash or liquid securities to cover its obligations pursuant to such
     instruments. As asset segregation reaches certain levels, a portfolio may
     lose flexibility in managing its investments properly, responding to
     shareholder redemption requests, or meeting other obligations and may be
     forced to sell other securities that it wanted to retain or to realize
     unintended gains or losses.

HOW TO INVEST: Adviser Class Shares of each portfolio are available to
Shareholders with combined investments of $500,000 and Shareholder Organizations
who have a contractual arrangement with the Fund or the Fund's Distributor,
including institutions such as trusts, foundations or broker-dealers purchasing
for the accounts of others. Shares are offered directly to investors without a
sales commission at the net asset value of the portfolio next determined after
receipt of the order. Share purchases may be made by sending investments
directly to the Fund, subject to acceptance by the Fund. The Fund also offers
Institutional and Investment Class Shares which differ from the Adviser Class
Shares in expenses charged and purchase requirements. Further information
relating to the other classes may be obtained by calling 800-354-8185.

HOW TO REDEEM: Shares of each portfolio may be redemed at any time at the net
asset value of the portfolio next determined after receipt of the redemption
request. The redemption price may be more or less than the purchase price. See
Redemption of Shares and Shareholder Services.

THE FUND'S INVESTMENT ADVISER: Miller Anderson & Sherrerd, LLP (the "Adviser")
is a Pennsylvania limited liability partnership founded in 1969, wholly owned by
indirect subsidiaries of Morgan Stanley, Dean Witter, Discover and Co., and is
located at One Tower Bridge, West Conshohocken, PA 19428. The Adviser provides
investment counseling services to employee benefit plans, endowments,
foundations and other institutional investors, and as of December 31, 1997 had
in excess of $58.1 billion in assets under management.
    
THE FUND'S DISTRIBUTOR: MAS Fund Distribution, Inc. (the "Distributor") provides
distribution services to the Fund. 

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 5

<PAGE>

   
             Financial Highlights - Fiscal Years Ended September 30

                 Selected per share data and ratios for a share
                       outstanding throughout each period

     The following should be read in conjunction with the Fund's financial
statements which are included in the Annual Report to Shareholders incorporated
by reference to the Statement of Additional Information. The Fund's financial
statements for the year ended September 30, 1997 have been examined by Price
Waterhouse LLP whose opinion thereon (which was unqualified) is also
incorporated by reference in the Statement of Additional Information.

     The Adviser Class shares of the Equity, International Equity, Mid Cap
Value, Domestic Fixed Income and Multi-Asset-Class Portfolios had not commenced
operations as of September 30, 1997, therefore Institutional Class share
financial information is provided to investors for informational purposes only
and should be referred to as a historical guide to a portfolio's operations and
expenses. Past performance does not indicate future results.

     (Data is adjusted to reflect a 2.5 for 1 share split as of August 13, 1993
for all portfolios in operation as of that date.)

<TABLE>
<CAPTION>
                                            Net Gains                      Dividend
            Net Asset                       or Losses                    Distributions     Capital Gain                     
              Value-        Net           on Securities     Total from       (net          Distributions                    
            Beginning    Investment       (realized and     Investment     investment      (realized net       Other        
            of Period      Income          unrealized)      Activities       income        capital gains)   Distributions   
- -------------------------------------------------------------------------------------------------------------------------  
<S>           <C>          <C>               <C>              <C>         <C>               <C>                 <C>         
Equity Portfolio (Commencement of Institutional Class Operations 11/14/84)

 1997         $25.67        $0.36            $8.22            $8.58       ($0.40)           ($4.40)             --    
 1996          24.43         0.50             3.26             3.76        (0.50)            (2.02)             --    
 1995          21.05         0.52             4.55             5.07        (0.52)            (1.17)             --    
 1994          22.82         0.44             0.41             0.85        (0.41)            (2.21)             --    
 1993          22.04         0.41             1.95             2.36        (0.43)            (1.15)             --    
 1992          20.78         0.43             1.86             2.29        (0.42)            (0.61)             --    
 1991          15.86         0.44             5.64             6.08        (0.44)            (0.72)             --    
 1990          18.65         0.48            (2.57)           (2.09)       (0.54)            (0.16)             --    
 1989          14.48         0.51             4.15             4.66        (0.46)            (0.03)             --    
 1988          17.14         0.40            (1.93)           (1.53)       (0.32)            (0.81)             --    
                                                                                   
International Equity Portfolio (Commencement of Institutional Class Operations 11/25/88)

 1997+++      $13.24        $0.25            $2.71            $2.96       ($0.26)           ($0.27)             --        
 1996          12.51         0.31             0.77             1.08        (0.29)            (0.06)             --        
 1995          14.52         0.19            (0.75)           (0.56)          --             (1.35)          ($0.10)#      
 1994          13.18         0.12             1.63             1.75        (0.16)            (0.25)             --        
 1993          11.03         0.21             2.14             2.35        (0.20)               --              --        
 1992          11.56         0.36            (0.33)            0.03        (0.56)               --              --        
 1991           9.83         0.22             1.83             2.05        (0.23)            (0.09)             --        
 1990          11.86         0.26            (1.90)           (1.64)       (0.31)            (0.08)             --        
 1989          10.00         0.26             1.75             2.01        (0.15)               --              --        

 <CAPTION>
                             Net Asset                   Net Assets-      Ratio of      Ratio of                              
                              Value-                       End of         Expenses      Net Income      Portfolio      Average  
               Total          End of          Total        Period        to Average     to Average       Turnover     Commission 
           Distributions      Period         Return**    (thousands)     Net Assets+    Net Assets         Rate        Rate***  
- --------------------------------------------------------------------------------------------------------------------------------
<S>           <C>          <C>             <C>          <C>               <C>            <C>             <C>       <C>    
Equity Portfolio (Commencement of Institutional Class Operations 11/14/84)

 1997         ($4.80)      $29.45            38.46%      $1,312,547         0.60%             1.30%      85%       $0.0294
 1996          (2.52)       25.67            16.48        1,442,261         0.60              1.95       67         0.0557
 1995          (1.69)       24.43            26.15        1,597,632         0.61              2.39       67             --
 1994          (2.62)       21.05             4.11        1,193,017         0.60              2.10       41             --
 1993          (1.58)       22.82            11.05        1,098,003         0.59              1.86       51             --
 1992          (1.03)       22.04            11.55          918,989         0.59              2.03       21             --
 1991          (1.16)       20.78            40.18          675,487         0.60              2.36       33             --
 1990          (0.70)       15.86           (11.67)         473,261         0.59              2.66       44             --
 1989          (0.49)       18.65            32.95          602,261         0.59              3.29       29             --
 1988          (1.13)       14.48            (8.41)         385,864         0.62              2.99       51             --
                                                                                                       
International Equity Portfolio (Commencement of Institutional Class Operations 11/25/88)

 1997+++      ($0.53)      $15.67            23.16%        $649,755         0.66%             1.81%      62%      $0.0035
 1996          (0.35)       13.24             8.87          635,706         0.69              1.88       78        0.0093
 1995          (1.45)       12.51            (3.36)       1,160,986         0.70              1.90      112             --
 1994          (0.41)       14.52            13.33        1,132,867         0.64              0.89       69             --
 1993          (0.20)       13.18            21.64          891,675         0.66              1.23       43             --
 1992          (0.56)       11.03             0.37          512,127         0.70              1.41       42             --
 1991          (0.32)       11.56            21.22          274,295         0.67              2.08       51             --
 1990          (0.39)        9.83           (14.38)         126,035         0.65              2.40       45             --
 1989          (0.15)       11.86            20.36           87,083         0.63*             3.05*       4             --
    
</TABLE>

- --------------------------------------------------------------------------------
MAS Fund - 6           Terms in bold type are defined in the Prospectus Glossary

<PAGE>

<TABLE>
<CAPTION>
   
                                            Net Gains                      Dividend
            Net Asset                       or Losses                    Distributions     Capital Gain                     
              Value-        Net           on Securities     Total from       (net          Distributions                    
            Beginning    Investment       (realized and     Investment     investment      (realized net       Other        
            of Period      Income          unrealized)      Activities       income        capital gains)   Distributions   
- -------------------------------------------------------------------------------------------------------------------------  
<S>           <C>          <C>               <C>              <C>         <C>               <C>                 <C>         
Mid Cap Growth Portfolio (Commencement of Adviser Class Operations 01/31/97)

 1997         $17.04       ($0.02)           $4.79            $4.77           --                --               --    

Mid Cap Value Portfolio (Commencement of Institutional Class Operations 12/30/94)

 1997+++      $14.49        $0.05            $8.37            $8.42       ($0.10)           ($1.01)              --    
 1996          13.45         0.11             2.52             2.63        (0.55)            (1.04)              --    
 1995          10.00      0.55###             2.90             3.45           --             -- --               --    

Value Portfolio (Commencement of Adviser Class Operations 07/17/96)

 1997+++      $15.61        $0.30            $5.74            $6.04       ($0.27)           ($1.03)              --    
 1996          14.11         0.01             1.49             1.50           --                --               --    

Domestic Fixed Income Portfolio (Commencement of Institutional Class Operations 9/30/87)

 1997         $10.89        $0.74            $0.33            $1.07       ($0.67)           ($0.02)              --    
 1996          11.03         0.56            (0.09)            0.47        (0.57)               --            (0.04)#  
 1995           9.87         0.52             0.87             1.39        (0.23)               --               --    
 1994          11.99         0.94            (1.23)           (0.29)       (0.95)            (0.73)           (0.15)#  
 1993          11.80         0.84             0.66             1.50        (0.78)            (0.53)              --    
 1992          11.34         0.87             0.76             1.63        (1.00)            (0.17)              --    
 1991          10.26         0.92             1.10             2.02        (0.94)               --               --    
 1990          10.90         0.87            (0.45)            0.42        (0.96)            (0.10)              --    
 1989          10.78         0.86             0.08             0.94        (0.78)            (0.04)              --    
 1988           9.99         0.73             0.52             1.25        (0.45)            (0.01)              --    

Fixed Income Portfolio (Commencement of Adviser Class Operations 11/07/96)
 1997+++      $12.04        $0.70            $0.20            $0.90       ($0.59)           ($0.13)              --    

High Yield Portfolio (Commencement of Adviser Class Operations 01/31/97)
 1997+++       $9.39        $0.56            $0.59            $1.15       ($0.39)               --               --    

Balanced Portfolio (Commencement of Adviser Class Operations 11/01/96)
 1997         $14.05        $0.42            $2.60            $3.02       ($0.38)           ($1.39)              --    

Multi-Asset-Class Portfolio (Commencement of Institutional Class Operations 7/29/94)
 1997+++      $12.28        $0.38            $2.57            $2.95       ($0.51)           ($1.08)              --  
 1996          11.34         0.46             1.05             1.51        (0.42)            (0.15)              --  
 1995           9.97         0.44             1.33             1.77        (0.40)               --               --  
 1994          10.00         0.07            (0.10)           (0.03)          --                --               --  

<CAPTION>
                             Net Asset                   Net Assets-      Ratio of      Ratio of                              
                              Value-                       End of         Expenses      Net Income      Portfolio      Average  
               Total          End of          Total        Period        to Average     to Average       Turnover     Commission 
           Distributions      Period         Return**    (thousands)     Net Assets+    Net Assets         Rate        Rate***  
- --------------------------------------------------------------------------------------------------------------------------------
<S>           <C>          <C>             <C>          <C>               <C>            <C>             <C>          <C>    
Mid Cap Growth Portfolio (Commencement of Adviser Class Operations 01/31/97)                                          
                                                                                                                      
 1997             --       $21.81            27.99%          $1,200         0.88%*++        (0.41%)*         134%     $0.0514
                                                                                                                      
Mid Cap Value Portfolio (Commencement of Institutional Class Operations 12/30/94)                                     
                                                                                                                      
 1997+++      ($1.11)      $21.80            61.40%        $220,260         0.90%++           0.28%          184%     $0.0467
 1996          (1.59)       14.49            22.30           50,449         0.88++            1.61           377       0.0462      
 1995             --        13.45            34.50            4,507        0.93*++           10.13*###    639###           --
                                                                                                                      
Value Portfolio (Commencement of Adviser Class Operations 07/17/96)                                                   
                                                                                                                      
 1997+++      ($1.30)      $20.35            40.87         $201,253         0.90%++           1.63%           46%     $0.0577
 1996             --        15.61            10.63           15,493         0.86*             1.66*           53       0.0572
                                                                                                                      
Domestic Fixed Income Portfolio (Commencement of Institutional Class Operations 9/30/87)                              
                                                                                                                      
 1997         ($0.69)      $11.27            10.20%         $96,954         0.51%++           6.48%          217%          --
 1996          (0.61)       10.89             4.41           95,362         0.52++            5.73           168           --
 1995          (0.23)       11.03            14.33           36,147         0.51++            6.80           313           --
 1994          (1.83)        9.87            (2.87)          36,521         0.50++            7.65            78           --
 1993          (1.31)       11.99            14.08           90,350         0.50              7.15            96           --
 1992          (1.17)       11.80            15.41           98,130         0.47              7.67           136           --
 1991          (0.94)       11.34            20.99           83,200         0.48              8.18           131           --
 1990          (1.06)       10.26             3.90           77,622         0.48              8.35           181           --
 1989          (0.82)       10.90             9.14           68,855         0.49              8.24           219           --
 1988          (0.46)       10.78            12.63           53,236         0.50              8.62           224           --
                                                                                                                      
Fixed Income Portfolio (Commencement of Adviser Class Operations 11/07/96)                                            
                                                                                                                      
 1997+++      ($0.72)      $12.22             7.79%         $76,683         0.77%*++          6.50%*         179%          --
                                                                                                                      
High Yield Portfolio (Commencement of Adviser Class Operations 01/31/97)                                              
                                                                                                                      
 1997+++      ($0.39)      $10.15            12.63%          $4,327         0.78%*            8.68%*          96%          --
                                                                                                                      
Balanced Portfolio (Commencement of Adviser Class Operations 11/01/96)                                                
                                                                                                                      
 1997         ($1.77)      $15.30            23.82%         $27,366         0.85%*++          3.24%*         145%     $0.0578
                                                                                                                      
Multi-Asset-Class Portfolio (Commencement of Institutional Class Operations 7/29/94)                                  
                                                                                                                      
 1997+++      ($1.59)      $13.64            26.50%        $173,155         0.74%++           3.07%          141%     $0.0114
 1996          (0.57)       12.28            13.75          129,558         0.58++            3.82           122       0.0225
 1995          (0.40)       11.34            18.28           96,839         0.58++            4.56           112           --
 1994             --         9.97            (0.30)          51,877         0.58*++           4.39*           20           --
</TABLE>
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 7
<PAGE>

   
Notes to the Financial Highlights 

  *  Annualized
 **  Total return figures for partial years are not annualized.
***  For fiscal years beginning on or after September 1, 1995, a fund is
     required to disclose the average commission rate per share paid for
     security transactions on which commissions were charged.
  #  Represents distribution in excess of net realized gains.
 ##  Represents distributions in excess of net investment income.
###  Net Investment Income, the Ratio of Net Investment Income to Average Net
     Assets and the Portfolio Turnover Rate reflect activity relating to a
     nonrecurring initiative to invest in higher-paying dividend income
     producing securities.
  +  For the respective periods ended September 30, the Ratio of Expenses to
     Average Net Assets for the following portfolios excludes the effect of
     expense offsets. If expense offsets were included, the Ratio of Expenses to
     Average Net Assets would be as follows for the respective periods. Where
     listed as N/A, if the expense offsets were included, the Ratio of Expenses
     to Average Net Assets would not significantly differ.

     Portfolio                       1995            1996           1997
     ---------                       ----            ----           ----
     Equity                          0.60%           0.60%          0.59%
     International Equity            0.66            0.65           0.63
     Mid Cap Value                   0.88*           0.88           0.88
     Mid Cap Growth                    --              --           0.86*
     Value                             --            0.85*          0.89
     Domestic Fixed Income           0.50            0.50           0.50
     Fixed Income                      --              --           0.76*
     High Yield                        --              --           0.76*
     Balanced                          --              --           0.84*
     Multi-Asset-Class               0.58            0.58           0.74

 ++  For the periods indicated, the Adviser voluntarily agreed to waive its
     advisory fees and/or reimburse certain expenses to the extent necessary in
     order to keep total operating expenses actually deducted from portfolio
     assets for the respective portfolios from exceeding voluntary expense
     limitations. For the respective periods ended September 30, the voluntarily
     waived and reimbursed expenses totaled the below listed amounts.

               Voluntarily waived and/or reimbursed expenses for:



     Portfolio                     1994          1995         1996         1997
     ---------                     ----          ----         ----         ----
     Mid Cap Value                   --          2.13%*       0.18%        0.02%
     Domestic Fixed Income         0.03%         0.09         0.01         0.01
     Fixed Income                    --            --          --          0.01*
     Balanced                        --            --          --          0.03*
     Multi-Asset-Class             0.26*         0.14         0.08         0.08


+++  Per share amounts for the year ended September 30, 1997, are based on
     average shares outstanding.
    
- --------------------------------------------------------------------------------
MAS Fund - 8           Terms in bold type are defined in the Prospectus Glossary

<PAGE>

   
YIELD AND TOTAL RETURN:

From time to time each portfolio of the Fund advertises its yield and total
return. Both yield and total return figures are based on historical earnings and
are not intended to indicate future performance. The average annual total return
reflects changes in the price of a portfolio's shares and assumes that any
income dividends and/or capital gain distributions made by the portfolio during
the period were reinvested in additional shares of the portfolio. Figures will
be given for one-, five- and ten-year periods ending with the most recent
calendar quarter-end (if applicable), and may be given for other periods as well
(such as from commencement of the portfolio's operations).

The yield of a portfolio is computed by dividing the net investment income per
share (using the average number of shares entitled to receive dividends) earned
during a 30-day period by the closing price per share on the last day of the
period. For the purpose of determining net investment income, the calculation
includes as expenses of the portfolio all recurring fees and any non recurring
charges for the period stated.

The performance of a portfolio may be compared to data prepared by independent
services which monitor the performance of investment companies, data reported in
financial and industry publications, returns of other investment advisers and
mutual funds, and various indices as further described in the Statement of
Additional Information.

The performance of Institutional Class Shares, Investment Class Shares and
Adviser Class Shares differ because of any class specific expenses paid by each
class and the shareholder servicing fees charged to Investment Class Shares and
distribution fees charged to Adviser Class Shares.

The Annual Report to Shareholders of the Fund for the Fund's most recent fiscal
year-end contains additional performance information that includes comparisons
with appropriate indices. The Annual Report is available without charge upon
request by writing to the Fund or calling the Client Services Group at the
telephone number shown on the front cover of this Prospectus.

GENERAL INFORMATION

Suitability: The Fund's portfolios are designed for long-term investors who can
accept the risks entailed in investing in the stock and bond markets, and are
not meant to provide a vehicle for playing short-term swings in the market. The
Fund's portfolios are designed principally for the investments of tax-exempt
fiduciary investors who are entrusted with the responsibility of investing
assets held for the benefit of others. Since such investors are not subject to
Federal income taxes, securities transactions for all portfolios will not be
influenced by the different tax treatment of capital gains and dividend income
under the Internal Revenue Code.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 9

<PAGE>

Securities Lending: Each portfolio may lend its securities to qualified brokers,
dealers, banks and other financial institutions for the purpose of realizing
additional income. Loans of securities will be collateralized by cash, letters
of credit, or securities issued or guaranteed by the U.S. Government or its
agencies. The collateral will equal at least 100% of the current market value of
the loaned securities. In addition, a portfolio will not loan its portfolio
securities to the extent that greater than one-third of its total assets, at
fair market value, would be committed to loans at that time.

   
Illiquid Securities/Restricted Securities: Each of the portfolios may invest up
to 15% of its net assets in securities that are illiquid by virtue of the
absence of a readily available market, or because of legal or contractual
restrictions on resale. This policy does not limit the acquisition of (i)
restricted securities eligible for resale to qualified institutional buyers
pursuant to Rule 144A under the Securities Act of 1933 or (ii) commercial paper
issued pursuant to Section 4(2) under the Securities Act of 1933, that are
determined to be liquid in accordance with guidelines established by the Fund's
Board of Trustees.

Turnover: The Adviser manages the portfolios generally without regard to
restrictions on annual turnover. In general, the portfolios will not trade for
short-term profits, but when circumstances warrant, investments may be sold
without regard to the length of time held.

With respect to the fixed-income portfolios and the fixed-income portion of the
Balanced and Multi-Asset-Class Portfolios the annual turnover rate will
ordinarily exceed 100% due to changes in portfolio duration, yield curve
strategy or commitments with respect to forward delivery mortgage-backed
securities. For the Balanced and Multi-Asset-Class Portfolios, annual turnover
rate is not expected to exceed 100% with respect to Equity Securities.

The following portfolios have annual turnover rates of 100% or more: Mid Cap
Growth, Mid Cap Value, Domestic Fixed Income, Fixed Income, Balanced and
Multi-Asset-Class. These high rates of annual turnover necessarily result in
correspondingly heavier brokerage and portfolio trading costs which are paid by
a portfolio. Trading in Fixed-Income Securities does not generally involve the
payment of brokerage commissions, but does involve indirect transaction costs.
In addition to portfolio trading costs, higher rates of annual turnover may
result in the realization of capital gains. To the extent net short-term capital
gains are realized, any distributions resulting from such gains are considered
ordinary income for federal income tax purposes. The annual turnover for each
portfolio is shown in the financial highlights under "Portfolio Turnover Rate".

Cash Equivalents/Temporary Defensive Investing: Although each portfolio intends
to remain substantially fully invested, a small percentage of a portfolio's
assets is generally held in the form of Cash Equivalents in order to meet
redemption requests and otherwise manage the daily affairs of each portfolio. In
addition, any portfolio may, when the Adviser deems that market conditions are
such that a temporary defensive approach is desirable, invest in Cash
Equivalents or the Fixed-Income Securities listed for that portfolio without
limit. In addition, the Adviser may, for temporary defensive purposes, increase
or decrease the average weighted maturity or duration of any fixed-income
portfolio without regard to that portfolio's usual average weighted maturity.
    


- --------------------------------------------------------------------------------
MAS Fund - 10          Terms in bold type are defined in the Prospectus Glossary

<PAGE>

Concentration: Concentration is defined as investment of 25% or more of a
portfolio's total assets in the securities of issuers operating in any one
industry. Except as provided in a portfolio's specific investment policies, or
as detailed in Investment Limitations, a portfolio will not concentrate
investments in any one industry.

   
Investment Limitations: Each portfolio is subject to certain limitations
designed to reduce its exposure to specific situations. Some of these
limitations are:

(a) with respect to 75% of its assets, a portfolio will not purchase securities
of any issuer if, as a result, more than 5% of the portfolio's total assets
taken at market value would be invested in the securities of any single issuer
except that this restriction does not apply to securities issued or guaranteed
by the U.S. Government or its agencies or instrumentalities; and

(b) with respect to 75% of its assets, a portfolio will not purchase a security
if, as a result, the portfolio would hold more than 10% of the outstanding
voting securities of any issuer.

Limitations (a) and (b), and certain other limitations described in the
Statement of Additional Information are fundamental and may be changed only with
the approval of the holders of a majority of the shares of the portfolios. Other
investment limitations described here and in the Statement of Additional
Information are not fundamental policies; meaning that the Board of Trustees may
change them without shareholder approval. If a percentage limitation on
investment or utilization of assets as set forth in this prospectus or Statement
of Additional Information is adhered to at the time an investment is made, a
later change in percentage resulting from changes in the value or total cost of
the portfolios' assets will not be considered a violation of the restriction,
and the sale of securities will not be required.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 11

<PAGE>

   
Equity Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing primarily in
                         dividend-paying common stocks of companies which are
                         deemed by the Adviser to demonstrate long-term earnings
                         growth that is greater than the economy in general and
                         greater than the expected rate of inflation.

Approach:                The investment process is designed to capture value by
                         identifying stocks that offer low but rising
                         expectations. Equity valuations reflect the level of
                         market expectations for companies, while
                         earnings-estimate revision data indicate the direction
                         of changes in expectations. In addition, the Adviser
                         diversifies across sectors to preserve return while
                         reducing risk; thus, the best values within each sector
                         of the market are sought. A group of senior portfolio
                         managers invests equal portions of the portfolio using
                         a disciplined approach to stock selection supported by
                         fundamental research analysts. Each manager makes his
                         or her own buy, sell and sector-allocation decisions.
                         Overall sector allocation is reviewed regularly to
                         preserve the benefits of diversification.

Policies:                Generally at least 65% invested in Equity Securities 
                         Up to 5% invested in Foreign Equities (excluding ADRs)
                         Derivatives may be used to pursue portfolio strategy

Capitalization Range:    Generally greater than $1 billion

<TABLE>
<S>                      <C>                 <C>                 <C>                    <C>
Allowable Investments:   ADRs                Corporates          Futures & Options      Swaps
                         Agencies            Foreign Bonds       Investment Companies   U.S. Governments
                         Cash Equivalents    Foreign Currency    Preferred Stock        Warrants
                         Common Stocks       Foreign Equities    Repurchase Agreements  When Issued Securities
                         Convertibles        Forwards            Rights                 Zero Coupons
</TABLE>

Comparative Index:       S&P 500 Index

Strategies:              Core Equity Investing

Portfolio
Management Team:         Arden C. Armstrong, James J. Jolinger, Nicholas J.
                         Kovich, Brian Kramp, Robert J. Marcin and Gary G.
                         Schlarbaum
    


- --------------------------------------------------------------------------------
MAS Fund - 12          Terms in bold type are defined in the Prospectus Glossary

<PAGE>

   
International Equity Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in common stocks of
                         companies based outside of the U.S.

Approach:                The Adviser evaluates both short-term and long-term
                         international economic trends and the relative
                         attractiveness of non-U.S. equity markets and
                         individual securities.

Policies:                Generally at least 65% invested in Foreign Equities of
                         issuers in at least 3 countries other than the U.S.

                         Derivatives may be used to pursue portfolio strategy

<TABLE>
<S>                      <C>                 <C>                                <C>                           <C>
Allowable Investments:   ADRs                Eastern European Issuers           Investment Companies          Structured Notes
                         Agencies            Emerging Markets Issuers           Investment Funds              Swaps
                         Brady Bonds         Foreign Bonds                      Loan Participations           U.S. Governments
                         Cash Equivalents    Foreign Currency                   Preferred Stock               Warrants 
                         Common Stocks       Foreign Equities                   Repurchase Agreements         When Issued Securities
                         Convertibles        Forwards                           Rights                        Zero Coupons
                         Corporates          Futures & Options                  Structured Investments
</TABLE>

Comparative Index:       MSCI World Ex-U.S. Index

Strategies:              International Equity Investing
                         Emerging Markets Investing
                         Foreign Investing

Portfolio
Management Team:         Hassan Elmasry and Horacio A. Valerias
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 13

<PAGE>

   
Mid Cap Growth Portfolio

Objective:               To achieve long-term capital growth by investing
                         primarily in common stocks of smaller and medium size
                         companies which are deemed by the Adviser to offer
                         long-term growth potential. Due to its emphasis on
                         long-term capital growth, dividend income will be lower
                         than for the Equity and Value Portfolios.

Approach:                The Adviser uses a four-part process combining
                         quantitative, fundamental, and valuation analysis with
                         a strict selling discipline. Stocks that pass an
                         initial screen based on estimate revisions undergo
                         detailed fundamental research. Valuation analysis is
                         used to eliminate the most overvalued securities.
                         Holdings are sold when their estimate-revision scores
                         fall to unacceptable levels, when fundamental research
                         uncovers unfavorable trends, or when their valuations
                         exceed the level that the Adviser believes is
                         reasonable given their growth prospects.

Policies:                Generally at least 65% invested in Equity Securities of
                         mid-cap companies offering long-term growth potential
                         Up to 5% invested in Foreign Equities (excluding ADRs)
                         Derivatives may be used to pursue portfolio strategy

Capitalization Range:    Generally $300 million to $3 billion

<TABLE>
<S>                      <C>                 <C>                      <C>                                <C>
Allowable Investments:   ADRs                Foreign Currency         Investment Companies               Rights
                         Cash Equivalents    Foreign Equities         Preferred Stock                    Warrants
                         Common Stocks       Futures & Options        Repurchase Agreements              When Issued Securities
                         Convertibles
</TABLE>

Comparative Index:       S&P MidCap 400 Index

Strategies:              Growth Stock Investing

Portfolio
Management Team:         Arden C. Armstrong and Abhi Y. Kanitkar
    


- --------------------------------------------------------------------------------
MAS Fund - 14          Terms in bold type are defined in the Prospectus Glossary

<PAGE>

   
Mid Cap Value Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in common stocks with
                         equity capitalizations in the range of the companies
                         represented in the S&P MidCap 400 Index which are
                         deemed by the Adviser to be relatively undervalued
                         based on certain proprietary measures of value. The
                         portfolio will typically exhibit a lower price/earnings
                         value ratio than the S&P MidCap 400 Index.

Approach:                The Adviser selects common stocks which are deemed to
                         be undervalued at the time of purchase, based on
                         proprietary measures of value. The portfolio will be
                         structured taking into account the economic sector
                         weights of the S&P MidCap 400 Index, with sector
                         weights normally being within 5% of the sector weights
                         of the Index.

Policies:                Generally at least 65% invested in Equity Securities of
                         mid-cap companies, which are deemed to be undervalued
                         Up to 5% invested in Foreign Equities (excluding ADRs)
                         Derivatives may be used to pursue portfolio strategy

Capitalization Range:    Generally matching the S&P MidCap 400 Index (currently
                         $500 million to $6 billion)

<TABLE>
<S>                      <C>                           <C>                      <C>                        <C>
Allowable Investments:   ADRs                          Corporates               Futures & Options          Swaps
                         Agencies                      Foreign Bonds            Investment Companies       U.S.  Governments
                         Cash Equivalents              Foreign Equities         Preferred Stock            Warrants 
                         Common Stocks                 Foreign Currency         Repurchase Agreements      When Issued Securities 
                         Convertibles                  Forwards                 Rights                     Zero Coupons
</TABLE>

Comparative Index:       S&P MidCap 400 Index

Strategies:              Value Stock Investing

Portfolio
Management Team:         Bradley S. Daniels, William B. Gerlach, Chris Leavy and
                         Gary G. Schlarbaum.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 15

<PAGE>

   
Value Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in common stocks with
                         equity capitalizations usually greater than $300
                         million which are deemed by the Adviser to be
                         relatively undervalued, based on various measures such
                         as price/earnings ratios and price/book ratios. While
                         capital return will be emphasized somewhat more than
                         income return, the portfolio's total return will
                         consist of both capital and income returns. It is
                         expected that income return will be higher than that of
                         the Equity Portfolio because stocks which are deemed to
                         be undervalued in the marketplace have, under most
                         market conditions, provided higher dividend income
                         returns than stocks which are deemed to have long-term
                         earnings growth potential which normally sell at higher
                         price/earnings ratios.

Approach:                The Adviser selects common stocks which are deemed to
                         be undervalued relative to the stock market in general
                         as measured by the Standard & Poor's 500 Index, based
                         on the value measures such as price/earnings ratios and
                         price/book ratios, as well as fundamental research.

Policies:                Generally at least 65% invested in Equity Securities,
                         which are deemed to be undervalued 
                         Up to 5% invested in Foreign Equities (excluding ADRs)
                         Derivatives may be used to pursue portfolio strategy

Capitalization Range:    Generally greater than $300 million

<TABLE>
<S>                      <C>                      <C>                    <C>                     <C>
Allowable Investments:   ADRs                     Corporates             Futures & Options       Swaps
                         Agencies                 Foreign Bonds          Investment Companies    U.S.  Governments       
                         Cash Equivalents         Foreign Currency       Preferred Stock         Warrants
                         Common Stocks            Foreign Equities       Repurchase Agreements   When Issued Securities 
                         Convertibles             Forwards               Rights                  Zero Coupons
</TABLE>

Comparative Index:       S&P 500 Index

Strategy:                Value Stock Investing

Portfolio
Management Team:         Richard M. Behler, Nicholas J. Kovich, Brian Kramp and 
                         Robert J. Marcin
    

- --------------------------------------------------------------------------------
MAS Fund - 16          Terms in bold type are defined in the Prospectus Glossary

<PAGE>

   
Domestic Fixed Income Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in a diversified
                         portfolio of U.S. Government securities and other
                         investment grade fixed-income securities of domestic
                         issuers.

Approach:                The Adviser actively manages the maturity and duration
                         structure of the portfolio in anticipation of long-term
                         trends in interest rates and inflation. Investments are
                         diversified among a wide variety of U.S. Fixed-Income
                         Securities in all market sectors.

Policies:                Generally at least 65% invested in Fixed-Income 
                         Securities 
                         100% invested in domestic issuers
                         May invest greater than 50% in Mortgage Securities
                         Derivatives may be used to pursue portfolio strategy

Quality Specifications:  80% of Fixed-Income Securities rated A or higher (or 
                         its equivalent) 
                         May invest up to 20% in Fixed-Income Securities rated 
                         BBB (or its equivalent)

Maturity and Duration:   Average weighted maturity generally greater than 5 
                         years

<TABLE>
<S>                      <C>               <C>                    <C>                       <C>
Allowable Investments:   Agencies          Corporates             Mortgage Securities       Structured Notes
                         Asset-Backeds     Floaters               Municipals                Swaps 
                         Cash Equivalents  Futures & Options      Preferred Stock           U.S. Governments 
                         CMOs              Inverse Floaters       Repurchase Agreements     When Issued Securities 
                         Convertibles      Investent Companies    SMBS                      Zero Coupons
</TABLE>

Comparative Index:       Salomon Broad Investment Grade 
                         Lehman Brothers Aggregate

Strategies:.             Maturity and Duration Management 
                         Value Investing Mortgage Investing

Portfolio
Management Team:         Thomas L. Bennett, Kenneth B. Dunn and Richard B. 
                         Worley

    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 17

<PAGE>

Fixed Income Portfolio
   

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in a diversified
                         portfolio of U.S. Government securities, corporate
                         bonds (including bonds rated below investment grade,
                         commonly referred to as junk bonds), foreign
                         fixed-income securities and mortgage-backed securities
                         of domestic issuers and other fixed-income securities.
                         The portfolio's average weighted maturity will
                         ordinarily be greater than five years.

Approach:                The Adviser actively manages the maturity and duration
                         structure of the portfolio in anticipation of long-term
                         trends in interest rates and inflation. Investments are
                         diversified among a wide variety of Fixed-Income
                         Securities in all market sectors.

Policies:                Generally at least 65% invested in Fixed-Income 
                         Securities
                         May invest greater than 50% in Mortgage Securities
                         Derivatives may be used to pursue portfolio strategy

Quality Specifications:  80% Investment Grade Securities
                         Up to 20% High Yield

Maturity and Duration:   Average weighted maturity generally greater than 5
                         years

<TABLE>
<S>                      <C>                   <C>                    <C>                     <C>    
Allowable Investments:   Agencies              Floaters               Investment Companies    Structured Notes
                         Asset-Backeds         Foreign Bonds          Loan Participations     Swaps
                         Brady Bonds           Foreign Currency       Mortgage Securities     U.S.  Governments
                         Cash Equivalents      Forwards               Municipals              When Issued Securities
                         CMOs                  Futures & Options      Preferred Stock         Yankees
                         Convertibles          High Yield             Repurchase Agreements   Zero Coupons 
                         Corporates            Inverse Floaters       SMBS
</TABLE>

Comparative Index:       Salomon Broad Investment Grade
                         Lehman Brothers Aggregate

Strategies:              Maturity and Duration Management 
                         Value Investing
                         Mortgage Investing 
                         High Yield Investing 
                         Foreign Investing 
                         Foreign Fixed Income Investing

Portfolio
Management Team:         Thomas L. Bennett, Kenneth B. Dunn and Richard B. 
                         Worley
    

- --------------------------------------------------------------------------------
MAS Fund - 18          Terms in bold type are defined in the Prospectus Glossary

<PAGE>

   
High Yield Portfolio

Objective:               To achieve above-average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in high yielding
                         corporate fixed-income securities (including bonds
                         rated below investment grade, commonly referred to as
                         junk bonds). The portfolio may also invest in U.S.
                         Government securities, mortgage-backed securities,
                         investment grade corporate bonds and in short-term
                         fixed-income securities, such as certificates of
                         deposit, treasury bills, and commercial paper. The
                         portfolio expects to achieve its objective by earning a
                         high rate of current income, although the portfolio may
                         seek capital growth opportunities when consistent with
                         its objective. The portfolio's average weighted
                         maturity will ordinarily be greater than five years.

Approach:                The Adviser uses equity and fixed-income valuation
                         techniques and analyses of economic and industry trends
                         to determine portfolio structure. Individual securities
                         are selected, and monitored, by fixed-income portfolio
                         managers who specialize in corporate bonds and use
                         in-depth financial analysis to uncover opportunities in
                         undervalued issues.

Policies:                Generally at least 65% invested in High Yield
                         securities (commonly referred to as junk bonds)
                         Derivatives may be used to pursue portfolio strategy

Quality Specifications:  None

Maturity and Duration:   Average weighted maturity generally greater than 
                         5 years
<TABLE>
<S>                      <C>                         <C>                           <C>                       <C>
Allowable Investments:   Agencies                    Emerging Markets Issuers      Inverse Floaters          SMBS
                         Asset-Backeds               Floaters                      Investment Companies      Structured Notes
                         Brady Bonds                 Foreign Bonds                 Loan Participations       Swaps
                         Cash Equivalents            Foreign Currency              Mortgage Securities       U.S.  Governments
                         CMOs                        Foreign Equities              Municipals                When Issued Securities
                         Convertibles                Forwards                      Preferred Stock           Yankees
                         Corporates                  Futures & Options             Repurchase Agreements     Zero Coupons       
                         Eastern European Issuers    High Yield            
</TABLE>
                                               
Comparative Index:       Salomon High Yield Market Index

Strategies:              High Yield Investing
                         Maturity and Duration Management
                         Value Investing 
                         Mortgage Investing
                         Foreign Investing
                         Foreign Fixed Income Investing
                         Emerging Markets Investing

Portfolio
Management Team:         Robert E. Angevine, Thomas L. Bennett and Stephen F. 
                         Esser
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 19

<PAGE>

   
Balanced Portfolio
    

Objective:               To achieve above average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in a diversified
                         portfolio of common stocks and fixed-income securities.
                         When the Adviser judges the relative outlook for the
                         equity and fixed-income markets to be neutral the
                         portfolio will be invested 60% in common stocks and 40%
                         in fixed-income securities. The asset mix may be
                         changed, however, with common stocks ordinarily
                         representing between 45% and 75% of the total
                         investment. The average weighted maturity of the
                         fixed-income portion of the portfolio will ordinarily
                         be greater than five years.

Approach:                The Adviser determines investment strategies for the
                         equity and fixed-income portions of the portfolio
                         separately and then determines the mix of those
                         strategies expected to maximize the return available
                         from both the stock and bond markets. Strategic
                         judgments on the equity/fixed-income asset mix are
                         based on valuation disciplines and tools for analysis
                         developed by the Adviser over its twenty-five year
                         history of managing balanced accounts.

Policies:                Generally 45% to 75% invested in Equity Securities 
                         Up to 25% invested in Foreign Bonds and/or Foreign
                         Equities (excluding ADRs) 
                         Up to 10% invested in Brady Bonds
                         At least 25% invested in senior Fixed-Income 
                         Securities 
                         Derivatives may be used to pursue portfolio strategy

Equity Capitalization:   Generally greater than $1 billion

Quality Specifications:  None

Maturity and Duration:   Average weighted maturity generally greater than 
                         5 years

<TABLE>
<CAPTION>
<S>                      <C>                 <C>                                <C>                           <C>    
   
Allowable Investments:   ADRs                Eastern European Issuers           Investment Companies          SMBS 
                         Agencies            Floaters                           Investment Funds              Structured Notes 
                         Asset-Backeds       Foreign Bonds                      Loan Participations           Swaps 
                         Brady Bonds         Foreign Currency                   Mortgage Securities           U.S. Governments
                         Cash Equivalents    Foreign Equities                   Municipals                    Warrants
                         CMOs                Forwards                           Preferred Stock               When Issued Securities
                         Common Stocks       Futures & Options                  Repurchase Agreements         Yankees
                         Convertibles        High Yield                         Rights                        Zero Coupons
                         Corporates          Inverse Floaters    
</TABLE>

Comparative Index:      A weighted blend of quarterly returns compiled by the
                        Adviser using:
                         60% S&P 500 Index
                         40% Salomon Broad Investment Grade Index

<TABLE>
<CAPTION>
<S>                      <C>                                                    <C>   
Strategies:              Asset Allocation Management                            Mortgage Investing
                         Core Equity Investing                                  High Yield Investing 
                         Fixed Income Management and Asset Allocation           Foreign Investing
                         Maturity and Duration Management                       Foreign Fixed Income Investing 
                         Value Investing
</TABLE>


Portfolio
Management Team:         Thomas L. Bennett, Gary G. Schlarbaum, Horacio A. 
                         Valeiras and Richard B. Worley
    

- --------------------------------------------------------------------------------
MAS Fund - 20          Terms in bold type are defined in the Prospectus Glossary

<PAGE>

   
Multi-Asset-Class Portfolio

Objective:               To achieve above average total return over a market
                         cycle of three to five years, consistent with
                         reasonable risk, by investing in a diversified
                         portfolio of common stocks and fixed-income securities
                         of U.S. and foreign issuers.

Approach:                The Adviser determines the mix of investments in
                         domestic and foreign equity and fixed-income and high
                         yield securities expected to maximize available total
                         return. Strategic judgments on the asset mix are based
                         on valuation disciplines and tools for analysis which
                         have been developed by the Adviser to compare the
                         relative potential returns and risks of global stock
                         and bond markets.

Policies:                Generally at least 65% invested in issuers located in
                         at least 3 countries, including the U.S. 
                         Derivatives may be used to pursue portfolio strategy

Domestic Equity 
Capitalization:          Generally greater than $1 billion

Quality Specifications:  None

Maturity and Duration:   Average weighted maturity generally greater than 5 
                         years

<TABLE>
<CAPTION>
<S>                      <C>                 <C>                                <C>                           <C>    
Allowable Investments:   ADRs                Eastern European Issuers           Inverse Floaters              SMBS
                         Agencies            Emerging Markets Issuers           Investment Companies          Structured Investments
                         Asset-Backeds       Floaters                           Investment Funds              Structured Notes 
                         Brady Bonds         Foreign Bonds                      Loan Participations           Swaps
                         Cash Equivalents    Foreign Currency                   Mortgage Securities           U.S. Governments 
                         CMOs                Foreign Equities                   Municipals                    Warrants
                         Common Stocks       Forwards                           Preferred Stock               When Issued Securities
                         Convertibles        Futures & Options                  Repurchase Agreements         Yankees
                         Corporates          High Yield                         Rights                        Zero Coupons
</TABLE>

Comparative Index:       A weighted blend of quarterly returns compiled by the 
                         Adviser using:
                           50% S&P 500 Index 
                           14% EAFE-GDP Weighted Index 
                           24% Salomon Broad Investment Grade Index 
                            6% Salomon World Government Bond Index Ex U.S. 
                            6% Salomon High Yield Market Index

Strategies:              Asset Allocation Management 
                         Fixed Income Management and Asset Allocation 
                         Maturity and Duration Management 
                         Value Investing 
                         Foreign Investing 
                         Foreign Fixed Income Investing
                         Core Equity Investing 
                         International Equity Investing
                         Emerging Markets Investing
                         High Yield Investing
                         Mortgage Investing

Portfolio
Management Team:         Thomas L. Bennett, J. David Germany, Gary G. 
                         Schlarbaum, Horacio A. Valeiras and Richard B. Worley
    
- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 21

<PAGE>

   
                               PROSPECTUS GLOSSARY
    

             CHARACTERISTICS AND RISKS OF STRATEGIES AND INVESTMENTS

STRATEGIES

   
Asset Allocation Management: The Adviser's approach to asset allocation
management is to determine investment strategies for each asset class in a
portfolio separately, and then determine the mix of those strategies expected to
maximize the return available from each market. Strategic judgments on the mix
among asset classes are based on valuation disciplines and tools for analysis
which have been developed over the Adviser's twenty-five year history of
managing balanced accounts.

Tactical asset-allocation shifts are based on comparisons of prospective risks,
returns, and the likely risk-reducing benefits derived from combining different
asset classes into a single portfolio. Experienced teams of equity, fixed-
income, and international investment professionals manage the investments in
each asset class.

Core Equity Investing: The Adviser's "core" or primary equity strategy
emphasizes common stocks of large companies, with targeted investments in small
company stocks that promise special growth opportunities. Depending on the
Adviser's outlook for the economy and different market sectors, the mix between
value stocks and growth stocks will change.
    

Emerging Markets Investing: The Adviser's approach to emerging markets investing
is based on the Adviser's evaluation of both short-term and long-term
international economic trends and the relative attractiveness of emerging
markets and individual emerging market securities.

   
As used in this Prospectus, emerging markets describes any country which is
generally considered to be an emerging or developing country by the
international financial community such as the International Bank for
Reconstruction and Development (more commonly known as the World Bank) and the
International Finance Corporation. There are currently over 130 countries which
are generally considered to be emerging or developing countries by the
international financial community, approximately 40 of which currently have
stock markets. Emerging markets can include every nation in the world except the
United States, Canada, Japan, Australia, New Zealand and most nations located in
Western Europe.

Currently, investing in many emerging markets is either not feasible or very
costly, or may involve unacceptable political risks. Other special risks include
the possible increased likelihood of expropriation or the return to power of a
communist regime which would institute policies to expropriate, nationalize or
otherwise confiscate investments. A portfolio will focus its investments on
those emerging market countries in which the Adviser believes the potential for
market appreciation outweighs these risks and the cost of investment. Investing
in emerging markets also involves an extra degree of custodial and/or market
risk, especially where the securities purchased are not traded on an official
exchange or where ownership records regarding the securities are maintained by
an unregulated entity (or even the issuer itself). 
    
- --------------------------------------------------------------------------------
MAS Fund - 22          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
Fixed Income Management and Asset Allocation: Within the Balanced and
Multi-Asset-Class Portfolios, the Adviser selects Fixed-Income Securities not
only on the basis of judgments regarding Maturity and Duration Management and
Value Investing, but also on the basis of the value offered by various segments
of the Fixed-Income Securities market relative to Cash Equivalents and Equity
Securities. In this context, the Adviser may find that certain segments of the
Fixed-Income Securities market offer more or less attractive relative value when
compared to Equity Securities than when compared to other Fixed-Income
Securities.

For example, in a given interest rate environment, Equity Securities may be
judged to be fairly valued when compared to intermediate duration fixed-income
securities, but overvalued compared to long duration Fixed-Income Securities.
Consequently, while a portfolio investing only in Fixed-Income Securities may
not emphasize long duration assets to the same extent, the fixed-income portion
of a balanced investment may invest a percentage of its assets in long duration
bonds on the basis of their valuation relative to Equity Securities.
    

Foreign Fixed Income Investing: The Adviser invests in Foreign Bonds and other
Fixed-Income Securities denominated in foreign currencies, where, in the opinion
of the Adviser, the combination of current yield and currency value offer
attractive expected returns. When the total return opportunities in a foreign
bond market appear attractive in local currency terms, but where in the
Adviser's judgment unacceptable currency risk exists, currency Futures &
Options, Forwards and Swaps may be used to hedge the currency risk.

Foreign Investing: Investors should recognize that investing in Foreign Bonds
and Foreign Equities involves certain special considerations which are not
typically associated with investing in domestic securities.

   
As non-U.S. companies are not generally subject to uniform accounting, auditing
and financial reporting standards and practices comparable to those applicable
to U.S. companies, there may be less publicly available information about
certain foreign securities than about U.S. securities. Foreign Bonds and Foreign
Equities may be less liquid and more volatile than securities of comparable U.S.
companies. There is generally less government supervision and regulation of
stock exchanges, brokers and listed companies than in the U.S. With respect to
certain foreign countries, there is the possibility of expropriation or
confiscatory taxation, political or social instability, or diplomatic
developments which could affect U.S. investments in those countries.
Additionally, there may be difficulty in obtaining and enforcing judgments
against foreign issuers.

Since Foreign Bonds and Foreign Equities may be denominated in foreign
currencies, and since a portfolio may temporarily hold uninvested reserves in
bank deposits of foreign currencies prior to reinvestment or conversion to U.S.
dollars, a portfolio may be affected favorably or unfavorably by changes in
currency rates and in exchange control regulations, and may incur costs in
connection with conversions between various currencies.

Although a portfolio will endeavor to achieve the most favorable execution costs
in its portfolio transactions in foreign securities, fixed commissions on many
foreign stock exchanges are generally higher than negotiated commissions on U.S.
exchanges. In addition, it is expected that the expenses for custodial
arrangements of a portfolio's foreign securities will be greater than the
expenses for the custodial arrangements for handling U.S. securities of equal
value. Certain foreign governments levy withholding taxes against dividend and
interest income. Although in some 
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 23

<PAGE>



countries a portion of these taxes is recoverable, the non-recovered portion of
foreign withholding taxes will reduce the income a portfolio receives from the
companies comprising the portfolio's investments.

Growth Stock Investing: Seeks to invest in Common Stocks generally characterized
by higher growth rates, betas, and price/earnings ratios, and lower yields than
the stock market in general as measured by the S&P 500 Index.

   
High Yield Investing: Involves investing in High Yield securities based on the
Adviser's analysis of economic and industry trends and individual security
characteristics. The Adviser conducts credit analysis for each security
considered for investment to evaluate its attractiveness relative to its risk. A
high level of diversification is also maintained to limit credit exposure to
individual issuers.

To the extent a portfolio invests in High Yield securities it will be exposed to
a substantial degree of credit risk. Lower-rated bonds are considered
speculative by traditional investment standards. High Yield securities may be
issued as a consequence of corporate restructuring or similar events. Also, High
Yield securities are often issued by smaller, less credit worthy companies, or
by highly leveraged (indebted) firms, which are generally less able than more
established or less leveraged firms to make scheduled payments of interest and
principal. The risks posed by securities issued under such circumstances are
substantial.

The market for High Yield securities is still relatively new. Because of this, a
long-term track record for bond default rates does not exist. In addition, the
secondary market for High Yield securities is generally less liquid than that
for investment grade corporate securities. In periods of reduced market
liquidity, high yield bond prices may become more volatile, and both the High
Yield market and a portfolio may experience sudden and substantial price
declines. This lower liquidity might have an effect on a portfolio's ability to
value or dispose of such securities. Also, there may be significant disparities
in the prices quoted for High Yield securities by various dealers. Under such
conditions, a portfolio may find it difficult to value its securities
accurately. A portfolio may also be forced to sell securities at a significant
loss in order to meet shareholder redemptions. These factors add to the risks
associated with investing in High Yield securities.

High yield bonds may also present risks based on payment expectations. For
example, high yield bonds may contain redemption or call provisions. If an
issuer exercises these provisions in a declining interest rate market, a
portfolio would have to replace the security with a lower yielding security,
resulting in a decreased return for investors.

Certain types of high yield bonds are non-income paying securities. For example,
Zero Coupons pay interest only at maturity and payment-in-kind bonds pay
interest in the form of additional securities. Payment in the form of additional
securities, or interest income recognized through discount accretion, will,
however, be treated as ordinary income which will be distributed to shareholders
even though the portfolio does not receive periodic cash flow from these
investments.
    

- --------------------------------------------------------------------------------
MAS Fund - 24          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
The table below provides a summary of ratings assigned to all U.S. and foreign
debt holdings of those portfolios with more than 5% invested in High Yield
securities as of September 30, 1997 (not including money market instruments).
These figures are dollar-weighted averages of month-end portfolio holdings and
do not necessarily indicate a portfolio's current or future debt holdings.
Portfolios whose debt holdings total less than 100% also invest in Equity
Securities.

High Yield Portfolio                              Multi-Asset-Class Portfolio
QUALITY                                      QUALITY
AAA                           9.06%          AAA                         26.22%
AA                            0.05           AA                           2.32
A                             0.19           A                            1.09
BBB                           6.09           BBB                          2.09
BB                           42.51           BB                           4.64
B                            35.48           B                            6.02
CCC                           0.96           CCC                          0.35
NOT RATED                                    NOT RATED
       BB         0.91*                             BB            0.06*
       B          2.52*                             B             0.22*
       NR         2.23                              NR            0.17
       TOTAL NR               5.66                  TOTAL NR              0.45 
TOTAL                       100.00%          TOTAL                       43.18%

*The Adviser believes that these non-rated securities are equivalent in quality
to the rating indicated.

International Equity Investing: The Adviser's approach to international equity
investing is based on its evaluation of both short-term and long-term
international economic trends and the relative attractiveness of non-U.S. equity
markets and individual securities.

The Adviser considers fundamental investment characteristics, the principles of
valuation and diversification, and a relatively long-term investment time
horizon. Since liquidity will also be a consideration, emphasis will likely be
influenced by the relative market capitalizations of different non-U.S. stock
markets and individual securities. Portfolios seek to diversify investments
broadly among both developed and newly industrializing foreign countries. Where
appropriate, a portfolio may also invest in regulated Investment Companies or
Investment Funds which invest in such countries to the extent allowed by
applicable law.

Maturity and Duration Management: One of two primary components of the Adviser's
fixed-income investment strategy is maturity and duration management. The
maturity and duration structure of a portfolio investing in Fixed-Income
Securities is actively managed in anticipation of cyclical interest rate
changes. Adjustments are not made in an effort to capture short-term, day-to-day
movements in the market, but instead are implemented in anticipation of longer
term shifts in the levels of interest rates. Adjustments made to shorten
portfolio maturity and duration are made to limit capital losses during periods
when interest rates are expected to rise. Conversely, adjustments made to
lengthen maturity are intended to produce capital appreciation in periods when
interest rates are expected to fall. The foundation for maturity and duration
strategy lies in analysis of the U.S. and global economies, focusing on levels
of real interest rates, monetary and fiscal policy actions, and cyclical
indicators. See Value Investing for a description of the second primary
component of the Adviser's fixed-income strategy.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 25

<PAGE>



About Maturity and Duration: Most debt obligations provide interest (coupon)
payments in addition to a final (par) payment at maturity. Some obligations also
have call provisions. Depending on the relative magnitude of these payments and
the nature of the call provisions, the market values of debt obligations may
respond differently to changes in the level and structure of interest rates.
Traditionally, a debt security's term-to-maturity has been used as a proxy for
the sensitivity of the security's price to changes in interest rates (which is
the interest rate risk or volatility of the security). However, term-to-maturity
measures only the time until a debt security provides its final payment, taking
no account of the pattern of the security's payments prior to maturity.

   
Duration is a measure of the expected life of a Fixed-Income Security that was
developed as a more precise alternative to the concept of term-to-maturity.
Duration incorporates a bond's yield, coupon interest payments, final maturity
and call features into one measure. Duration is one of the fundamental tools
used by the Adviser in the selection of Fixed-Income Securities. Duration is a
measure of the expected life of a Fixed-Income Security on a present value
basis. Duration takes the length of the time intervals between the present time
and the time that the interest and principal payments are scheduled or, in the
case of a callable bond, expected to be received, and weights them by the
present values of the cash to be received at each future point in time. For any
Fixed-Income Security with interest payments occurring prior to the payment of
principal, duration is always less than maturity. In general, all other factors
being the same, the lower the stated or coupon rate of interest of a
Fixed-Income Security, the longer the duration of the security; conversely, the
higher the stated or coupon rate of interest of a Fixed-Income Security, the
shorter the duration of the security.

There are some situations where even the standard duration calculation does not
properly reflect the interest rate exposure of a security. For example, floating
and variable rate securities often have final maturities of ten or more years;
however, their interest rate exposure corresponds to the frequency of the coupon
reset. Another example where the interest rate exposure is not properly captured
by duration is the case of mortgage pass-through securities. The stated final
maturity of such securities is generally 30 years, but current prepayment rates
are more critical in determining the securities' interest rate exposure. In
these and other similar situations, the Adviser will use sophisticated
analytical techniques that incorporate the economic life of a security into the
determination of its interest rate exposure.

Mortgage Investing: At times it is anticipated that greater than 50% of a fixed
income portfolio's assets may be invested in mortgage-related securities. These
include Mortgage Securities which represent interests in pools of mortgage loans
made by lenders such as commercial banks, savings and loan associations,
mortgage bankers and others. The pools are assembled by various organizations,
including the Government National Mortgage Association (GNMA), Federal Home Loan
Mortgage Corporation (FHLMC), Fannie Mae, other government agencies, and private
issuers. It is expected that a portfolio's primary emphasis will be in Mortgage
Securities issued by the various government-related organizations. However, a
portfolio may invest, without limit, in Mortgage Securities issued by private
issuers when the Adviser deems that the quality of the investments, the quality
of the issuer, and market conditions warrant such investments. Securities issued
by private issuers will be rated investment grade by Moody's or Standard &
Poor's or be deemed by the Adviser to be of comparable investment quality.

Value Investing: One of two primary components of the Adviser's fixed-income
strategy is value investing, whereby the Adviser seeks to identify undervalued
sectors and securities through analysis of credit quality, option
charac-
    

- --------------------------------------------------------------------------------
MAS Fund - 26          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
teristics and liquidity. Quantitative models are used in conjunction with
judgment and experience to evaluate and select securities with embedded put or
call options which are attractive on a risk- and option-adjusted basis.
Successful value investing will permit a portfolio to benefit from the price
appreciation of individual securities during periods when interest rates are
unchanged. See Maturity and Duration Management for a description of the other
key component of the Adviser's fixed-income investment strategy.

Value Stock Investing: Emphasizes Common Stocks which are deemed by the Adviser
to be undervalued relative to the stock market in general as measured by the
appropriate market index, based on value measures such as price/earnings ratios
and price/book ratios. Value stocks are generally dividend paying Common Stocks.
However, non-dividend paying stocks may also be selected for their value
characteristics.
    

INVESTMENTS

   
Each portfolio may invest in the securities defined below in accordance with
their listing of Allowable Investments and any quality or policy constraints.
    

ADRs--American Depository Receipts: are dollar-denominated securities which are
listed and traded in the United States, but which represent claims to shares of
foreign stocks. ADRs may be either sponsored or unsponsored. Unsponsored ADR
facilities typically provide less information to ADR holders. ADRs also include
American Depository Shares.

   
Agencies: are securities which are not guaranteed by the U.S. Government, but
which are issued, sponsored or guaranteed by a federal agency or federally
sponsored agency such as the Student Loan Marketing Association or any of
several other agencies.
    

Asset-Backeds: are securities collateralized by shorter term loans such as
automobile loans, home equity loans, computer leases, or credit card
receivables. The payments from the collateral are passed through to the security
holder. The collateral behind asset-backed securities tends to have prepayment
rates that do not vary with interest rates. In addition the short-term nature of
the loans reduces the impact of any change in prepayment level. Due to
amortization, the average life for these securities is also the conventional
proxy for maturity.

Possible Risks: Due to the possibility that prepayments (on automobile loans and
other collateral) will alter the cash flow on asset-backed securities, it is not
possible to determine in advance the actual final maturity date or average life.
Faster prepayment will shorten the average life and slower prepayments will
lengthen it. However, it is possible to determine what the range of that
movement could be and to calculate the effect that it will have on the price of
the security. In selecting these securities, the Adviser will look for those
securities that offer a higher yield to compensate for any variation in average
maturity.

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 27

<PAGE>




   
Brady Bonds: are debt obligations which are created through the exchange of
existing commercial bank loans to foreign entities for new obligations in
connection with debt restructuring under a plan introduced by former U.S.
Secretary of the Treasury, Nicholas F. Brady (the Brady Plan). Brady Bonds have
been issued fairly recently, and, accordingly, do not have a long payment
history. They may be collateralized or uncollateralized and issued in various
currencies (although most are dollar-denominated) and they are actively traded
in the over-the-counter secondary market. For further information on these
securities, see the Statement of Additional Information. Portfolios will only
invest in Brady Bonds consistent with quality specifications.
    

Cash Equivalents: are short-term fixed-income instruments comprising:

(1) Time deposits, certificates of deposit (including marketable variable rate
certificates of deposit) and bankers' acceptances issued by a commercial bank or
savings and loan association. Time deposits are non-negotiable deposits
maintained in a banking institution for a specified period of time at a stated
interest rate. Certificates of deposit are negotiable short-term obligations
issued by commercial banks or savings and loan associations against funds
deposited in the issuing institution. Variable rate certificates of deposit are
certificates of deposit on which the interest rate is periodically adjusted
prior to their stated maturity based upon a specified market rate. A bankers'
acceptance is a time draft drawn on a commercial bank by a borrower usually in
connection with an international commercial transaction (to finance the import,
export, transfer or storage of goods).

   
Each portfolio may invest in obligations of U.S. banks and, except for the
Domestic Fixed Income Portfolio, in foreign branches of U.S. banks (Eurodollars)
and U.S. branches of foreign banks (Yankee dollars). Euro and Yankee dollar
investments will involve some of the same risks of investing in international
securities that are discussed in the Foreign Investing section of this
Prospectus.

The portfolios will not invest in any security issued by a commercial bank
unless (i) the bank has total assets of at least $1 billion, or the equivalent
in other currencies, or, in the case of domestic banks which do not have total
assets of at least $1 billion, the aggregate investment made in any one such
bank is limited to $100,000 and the principal amount of such investment is
insured in full by the Federal Deposit Insurance Corporation, (ii) in the case
of U.S. banks, it is a member of the Federal Deposit Insurance Corporation, and
(iii) in the case of foreign branches of U.S. banks, the security is deemed by
the Adviser to be of an investment quality comparable with other debt securities
which may be purchased by the portfolio;

(2) Each portfolio may invest in commercial paper rated at time of purchase by
one or more Nationally Recognized Statistical Rating Organizations ("NRSRO") in
one of their two highest categories, (e.g., A-l or A-2 by Standard & Poor's or
Prime 1 or Prime 2 by Moody's), or, if not rated, issued by a corporation having
an outstanding unsecured debt issue rated high-grade by a NRSRO (e.g. A or
better by Moody's, Standard & Poor's or Fitch);
    

(3) Short-term corporate obligations rated high-grade at the time of purchase by
a NRSRO (e.g. A or better by Moody's, Standard & Poor's or Fitch);

- --------------------------------------------------------------------------------
MAS Fund - 28          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



(4) U.S. Government obligations including bills, notes, bonds and other debt
securities issued by the U.S. Treasury. These are direct obligations of the U.S.
Government and differ mainly in interest rates, maturities and dates of issue;

   
(5) Government Agency securities issued or guaranteed by U.S. Government
sponsored instrumentalities and Federal agencies. These include securities
issued by the Federal Home Loan Banks, Federal Land Bank, Farmers Home
Administration, Farm Credit Banks, Federal Intermediate Credit Bank, Fannie Mae,
Federal Financing Bank, the Tennessee Valley Authority, and others; and

(6) Repurchase Agreements collateralized by securities listed above.
    

CMOs--Collateralized Mortgage Obligations: are Derivatives which are
collateralized by mortgage pass-through securities. Cash flows from the mortgage
pass-through securities are allocated to various tranches (a "tranche" is
essentially a separate security) in a predetermined, specified order. Each
tranche has a stated maturity - the latest date by which the tranche can be
completely repaid, assuming no prepayments - and has an average life the average
of the time to receipt of a principal payment weighted by the size of the
principal payment. The average life is typically used as a proxy for maturity
because the debt is amortized (repaid a portion at a time), rather than being
paid off entirely at maturity, as would be the case in a straight debt
instrument.

   
Possible Risks: Due to the possibility that prepayments (on home mortgages and
other collateral) will alter the cash flow on CMOs, it is not possible to
determine in advance the actual final maturity date or average life. Faster
prepayment will shorten the average life and slower prepayments will lengthen
it. However, it is possible to determine what the range of that movement could
be and to calculate the effect that it will have on the price of the security.
In selecting these securities, the Adviser will look for those securities that
offer a higher yield to compensate for any variation in average maturity.

Like bonds in general, Mortgage Securities will generally decline in price when
interest rates rise. Rising interest rates also tend to discourage refinancings
of home mortgages with the result that the average life of mortgage securities
held by a portfolio may be lengthened. This extension of average life causes the
market price of the securities to decrease further than if their average lives
were fixed. In part to compensate for these risks, mortgages will generally
offer higher yields than comparable bonds. However, when interest rates fall,
mortgages may not enjoy as large a gain in market value due to prepayment risk
because additional mortgage prepayments must be reinvested at lower interest
rates.
    

Common Stocks: are Equity Securities which represent an ownership interest in a
corporation, entitling the shareholder to voting rights and receipt of dividends
paid based on proportionate ownership.

Convertibles: are convertible bonds or shares of convertible Preferred Stock
which may be exchanged for a fixed number of shares of Common Stock at the
purchaser's option.

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 29

<PAGE>




Corporates--Corporate bonds: are debt instruments issued by private
corporations. Bondholders, as creditors, have a prior legal claim over common
and preferred stockholders of the corporation as to both income and assets for
the principal and interest due to the bondholder. A portfolio will buy
Corporates subject to any quality constraints. If a security held by a portfolio
is down-graded, the portfolio may retain the security if the Adviser deems
retention of the security to be in the best interests of the portfolio.

Depositary Receipts: include both Global Depositary Receipts ("GDRs") and
European Depositary Receipts ("EDRs"), in addition to other similar types of
depositary shares, and are securities that can be traded in U.S. or foreign
securities markets but which represent ownership interests in a security or pool
of securities by a foreign or U.S. corporation. Depositary Receipts may be
sponsored or unsponsored. The depositary of unsponsored Depositary Receipts may
provide less information to receipt holders.

   
Derivatives: A financial instrument whose value and performance are based on the
value and performance of another security or financial instrument. The Adviser
will use derivatives only in circumstances where they offer the most economic
means of improving the risk/reward profile of the portfolio. The Adviser will
not use derivatives to increase portfolio risk above the level that could be
achieved in the portfolio using only traditional investment securities. In
addition, the Adviser will not use derivatives to acquire exposure to changes in
the value of assets or indexes of assets that are not listed in the applicable
Allowable Investments for the portfolio. Any applicable limitations are
described under each investment definition. The portfolios may enter into
over-the-counter Derivatives transactions with counterparties approved by the
Adviser in accordance with guidelines established by the Board of Trustees.
These guidelines provide for a minimum credit rating for each counterparty and
various credit enhancement techniques (for example, collateralization of amounts
due from counterparties) to limit exposure to counterparties with ratings below
AA. Derivatives include, but are not limited to, CMOs, Forwards, Futures and
Options, SMBS, Structured Investments, Structured Notes and Swaps. See each
individual portfolio's listing of Allowable Investments to determine which of
these a portfolio may hold.

Eastern European Issuers: The economies of Eastern European countries are
currently suffering both from the stagnation resulting from centralized economic
planning and control and the higher prices and unemployment associated with the
transition to market economics. Unstable economic and political conditions may
adversely affect security values. Upon the accession to power of Communist
regimes during the 1940's, the governments of a number of Eastern European
countries expropriated a large amount of property. The claims of many property
owners against those governments were never finally settled. As a result, there
can be no assurance that the portfolio's investments in Eastern Europe would not
be expropriated, nationalized or otherwise confiscated.
    

Emerging Markets Issuers: An emerging market security is one issued by a company
that has one or more of the following characteristics: (i) its principal
securities trading market is in an emerging market, (ii) alone or on a
consolidated basis it derives 50% or more of its annual revenue from either
goods produced, sales made or services performed in emerging markets, or (iii)
it is organized under the laws of, and has a principal office in, an emerging
market country. The Adviser will base determinations as to eligibility on
publicly available information and inquiries made to the companies. Investing in
emerging markets may entail purchasing securities issued by or on behalf of
enti-

- --------------------------------------------------------------------------------
MAS Fund - 30          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



ties that are insolvent, bankrupt, in default or otherwise engaged in an attempt
to reorganize or reschedule their obligations, and in entities that have little
or no proven credit rating or credit history. In any such case, the issuer's
poor or deteriorating financial condition may increase the likelihood that the
investing fund will experience losses or diminution in available gains due to
bankruptcy, insolvency or fraud.

   
Equity Securities: Commonly include but are not limited to Common Stock,
Preferred Stock, ADRs, Rights, Warrants, Convertibles, and Foreign Equities. See
each individual portfolio listing of Allowable Investments to determine which of
these a portfolio may hold. Preferred Stock is contained in both the definition
of Equity Securities and Fixed-Income Securities since it exhibits
characteristics commonly associated with each type.

Fixed-Income Securities: Commonly include but are not limited to U.S.
Governments, Zero Coupons, Agencies, Corporates, High Yield, Mortgage
Securities, SMBS, CMOs, Asset-Backeds, Convertibles, Brady Bonds, Floaters,
Inverse Floaters, Cash Equivalents, Repurchase Agreements, Preferred Stock, and
Foreign Bonds. See each individual portfolio's listing of Allowable Investments
to determine which of these a portfolio may hold. Preferred Stock is contained
in both the definition of Equity Securities and Fixed-Income Securities since it
exhibits characteristics commonly associated with each type of security.
    

Floaters--Floating and Variable Rate Obligations: are debt obligations with a
floating or variable rate of interest, i.e. the rate of interest varies with
changes in specified market rates or indices, such as the prime rate, or at
specified intervals. Certain floating or variable rate obligations may carry a
demand feature that permits the holder to tender them back to the issuer of the
underlying instrument, or to a third party, at par value prior to maturity. When
the demand feature of certain floating or variable rate obligations represents
an obligation of a foreign entity, the demand feature will be subject to certain
risks discussed under Foreign Investing.

Foreign Bonds: are Fixed Income Securities denominated in foreign currency and
issued and traded primarily outside of the U.S., including: (1) obligations
issued or guaranteed by foreign national governments, their agencies,
instrumentalities, or political subdivisions; (2) debt securities issued,
guaranteed or sponsored by supranational organizations established or supported
by several national governments, including the World Bank, the European
Community, the Asian Development Bank and others; (3) non-government foreign
corporate debt securities; and (4) foreign Mortgage Securities and various other
mortgages and asset-backed securities.

Foreign Currency: Portfolios investing in foreign securities will regularly
transact security purchases and sales in foreign currencies. These portfolios
may hold foreign currency or purchase or sell currencies on a forward basis (see
Forwards)

Foreign Equities: are Common Stock, Preferred Stock, Rights and Warrants of
foreign issuers denominated in foreign currency and traded primarily in non-U.S.
markets. Foreign Equities also include Depositary Receipts. Investing in foreign
companies involves certain special considerations which are not typically
associated with investing in U.S. companies (see Foreign Investing).

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 31

<PAGE>



Forwards--Forward Foreign Currency Exchange Contracts: are Derivatives which are
used to protect against uncertainty in the level of future foreign exchange
rates. A forward foreign currency exchange contract is an obligation to purchase
or sell a specific currency at a future date, which may be any fixed number of
days from the date of the contract agreed upon by the parties, at a price set at
the time of the contract. Such contracts do not eliminate fluctuations caused by
changes in the local currency prices of the securities, but rather, they
establish an exchange rate at a future date. Also, although such contracts can
minimize the risk of loss due to a decline in the value of the hedged currency,
at the same time they limit any potential gain that might be realized.

A portfolio may use currency exchange contracts in the normal course of business
to lock in an exchange rate in connection with purchases and sales of securities
denominated in foreign currencies (transaction hedge) or to lock in the U.S.
dollar value of portfolio positions (position hedge). In addition, the
portfolios may cross hedge currencies by entering into a transaction to purchase
or sell one or more currencies that are expected to decline in value relative to
other currencies to which a portfolio has or expects to have portfolio exposure.
Portfolios may also engage in proxy hedging which is defined as entering into
positions in one currency to hedge investments denominated in another currency,
where the two currencies are economically linked. A portfolio's entry into
forward contracts, as well as any use of cross or proxy hedging techniques will
generally require the portfolio to hold liquid securities or cash equal to the
portfolio's obligations in a segregated account throughout the duration of the
contract.

A portfolio may also combine forward contracts with investments in securities
denominated in other currencies in order to achieve desired credit and currency
exposures. Such combinations are generally referred to as synthetic securities.
For example, in lieu of purchasing a foreign bond, a portfolio may purchase a
U.S. dollar-denominated security and at the same time enter into a forward
contract to exchange U.S. dollars for the contract's underlying currency at a
future date. By matching the amount of U.S. dollars to be exchanged with the
anticipated value of the U.S. dollar-denominated security, a portfolio may be
able to lock in the foreign currency value of the security and adopt a synthetic
investment position reflecting the credit quality of the U.S.
dollar-denominated security.

   
There is a risk in adopting a transaction hedge or position hedge to the extent
that the value of a security denominated in foreign currency is not exactly
matched with a portfolio's obligation under the forward contract. On the date of
maturity, a portfolio may be exposed to some risk of loss from fluctuations in
that currency. Although the Adviser will attempt to hold such mismatching to a
minimum, there can be no assurance that the Adviser will be able to do so. For
proxy hedges, cross hedges or a synthetic position, there is an additional risk
in that these transactions create residual foreign currency exposure. When a
portfolio enters into a forward contract for purposes of creating a position
hedge, transaction hedge, cross hedge or a synthetic security, it will generally
be required to hold liquid securities or cash in a segregated account with a
daily value at least equal to its obligation under the forward contract.

Futures & Options--Futures Contracts, Options on Futures Contracts and Options:
are Derivatives. Futures contracts provide for the sale by one party and
purchase by another party of a specified amount of a specific security, at a
specified future time and price. An option is a legal contract that gives the
holder the right to buy or sell a specified amount of the underlying security or
futures contract at a fixed or determinable price upon the exercise of the
option. A call option conveys the right to buy and a put option conveys the
right to sell a specified quantity of the underlying security.
    

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MAS Fund - 32          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
A portfolio will not enter into futures contracts to the extent that its
outstanding obligations to purchase securities under these contracts in
combination with its outstanding obligations with respect to options
transactions would exceed 50% of its total assets. It will maintain assets
sufficient to meet its obligations under such contracts in a segregated account
with the custodian bank or will otherwise comply with the Securities and
Exchange Commission's ("SEC's") position on asset coverage.

Possible Risks: The primary risks associated with the use of Futures and Options
are (i) imperfect correlation between the change in market value of the
securities held by a portfolio and the prices of futures and options relating to
the stocks, bonds or futures contracts purchased or sold by a portfolio; and
(ii) possible lack of a liquid secondary market for a futures contract and the
resulting inability to close a futures position which could have an adverse
impact on a portfolio's ability to execute futures and options strategies.
Additional risks associated with options transactions are (i) the risk that an
option will expire worthless; (ii) the risk that the issuer of an over-the-
counter option will be unable to fulfill its obligation to the portfolio due to
bankruptcy or related circumstances; (iii) the risk that options may exhibit
greater short-term price volatility than the underlying security; and (iv) the
risk that a portfolio may be forced to forego participation in the appreciation
of the value of underlying securities, futures contracts or currency due to the
writing of a call option.

High Yield: High yield securities are generally considered to be Corporates,
Preferred Stocks, and Convertibles rated Ba through by Moody's or BB through by
Standard & Poor's, and unrated securities considered to be of equivalent
quality. Securities rated less than Baa by Moody's or BBB by Standard & Poor's
are classified as non-investment grade securities and are commonly referred to
as junk bonds or high yield, high risk securities. Such securities carry a high
degree of risk and are considered speculative by the major credit rating
agencies. The following are excerpts from the Moody's and Standard & Poor's
definitions for speculative-grade debt obligations:

          Moody's: Ba-rated bonds have "speculative elements" so their future
          "cannot be considered assured," and protection of principal and
          interest is "moderate" and "not well safeguarded during both good and
          bad times in the future." B-rated bonds "lack characteristics of a
          desirable investment" and the assurance of interest or principal
          payments "may be small." Caa-rated bonds are "of poor standing" and
          "may be in default" or may have "elements of danger with respect to
          principal or interest." Ca-rated bonds represent obligations which are
          speculative in a high degree. Such issues are often in default or have
          other marked shortcomings. C-rated bonds are the "lowest rated" class
          of bonds, and issues so rated can be regarded as having "extremely
          poor prospects" of ever attaining any real investment standing.

          Standard & Poor's: BB-rated bonds have "less near-term vulnerability
          to default" than B- or CCC-rated securities but face "major ongoing
          uncertainties . . . which may lead to inadequate capacity" to pay
          interest or principal. B-rated bonds have a "greater vulnerability to
          default than BB-rated bonds and the ability to pay interest or
          principal will likely be impaired by adverse business conditions."
          CCC-rated bonds have a currently identifiable "vulnerability to
          default" and, without favorable business conditions, will be "unable
          to repay interest and principal." The rating C is reserved for income
          bonds on which "no interest is being paid." Debt rated D is in
          "default", and "payment of interest and/or repayment of principal is
          in arrears."
    

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 33

<PAGE>



   
While these securities offer high yields, they also normally carry with them a
greater degree of risk than securities with higher ratings. Lower-rated bonds
are considered speculative by traditional investment standards. High yield
securities may be issued as a consequence of corporate restructuring or similar
events. Also, high yield securities are often issued by smaller, less credit
worthy companies, or by highly leveraged (indebted) firms, which are generally
less able than more established or less leveraged firms to make scheduled
payments of interest and principal. The price movement of these securities is
influenced less by changes in interest rates and more by the financial and
business position of the issuing corporation when compared to investment grade
bonds.
    

The risks posed by securities issued under such circumstances are substantial.
If a security held by a portfolio is down-graded, the portfolio may retain the
security.

   
Inverse Floaters--Inverse Floating Rate Obligations: are Fixed-Income
Securities, which have coupon rates that vary inversely at a multiple of a
designated floating rate, such as LIBOR (London Inter-Bank Offered Rate). Any
rise in the reference rate of an Inverse Floater (as a consequence of an
increase in interest rates) causes a drop in the coupon rate while any drop in
the reference rate of an Inverse Floater causes an increase in the coupon rate.
Inverse floaters may exhibit substantially greater price volatility than fixed
rate obligations having similar credit quality, redemption provisions and
maturity, and Inverse Floater CMOs exhibit greater price volatility than the
majority of mortgage pass-through securities or CMOs. In addition, some Inverse
Floater CMOs exhibit extreme sensitivity to changes in prepayments. As a result,
the yield to maturity of an Inverse Floater CMO is sensitive not only to changes
in interest rates but also to changes in prepayment rates on the related
underlying mortgage assets.

Investment Companies: The portfolios are permitted to invest in shares of other
open-end or closed-end investment companies. The Investment Company Act of 1940
(the "1940 Act") generally prohibits the portfolios from acquiring more than 3%
of the outstanding voting shares of an investment company and limits such
investments to no more than 5% of the portfolio's total assets in any one
investment company and no more than 10% in any combination of investment
companies. The 1940 Act also prohibits the portfolios from acquiring in the
aggregate more than 10% of the outstanding voting shares of any registered
closed-end investment company.

To the extent a portfolio invests a portion of its assets in Investment
Companies, those assets will be subject to the expenses of the investment
company as well as to the expenses of the portfolio itself. The portfolios may
not purchase shares of any affiliated investment company except as permitted by
SEC rule or order.

Investment Funds: Some emerging market countries have laws and regulations that
currently preclude or limit direct foreign investment in the securities of their
companies. However, indirect foreign investment in the securities of companies
listed and traded on the stock exchanges in these countries is permitted by
certain emerging market countries through investment funds. Portfolios that may
invest in these Investment Funds are subject to applicable law as discussed
under Investment Restrictions and will invest in such Investment Funds only
where appropriate given that the portfolio's shareholders will bear indirectly
the layer of expenses of the underlying investment funds in addition to their
proportionate share of the expenses of the portfolio. Under certain
circumstances, an investment in an investment fund will be subject to the
additional limitations that apply to investments in Investment Companies.
    

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MAS Fund - 34          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
Investment Grade Securities: are those (a) rated by one or more nationally
recognized statistical rating organization (NRSRO) in one of the four highest
rating categories at the time of purchase (e.g. AAA, AA, A or BBB by Standard &
Poor's Corporation (Standard & Poor's) or Fitch Investors Service, Inc., (Fitch)
or Aaa, Aa, A or Baa by Moody's Investors Service, Inc. (Moody's)); (b)
guaranteed by the U.S. Government or a private organization; or (c) considered
by the Adviser to be investment grade quality. Securities rated BBB or Baa
represent the lowest of four levels of Investment Grade Securities and are
regarded as borderline between definitely sound obligations and those in which
the speculative element begins to predominate. Mortgage Securities, including
mortgage pass-throughs and CMOs, deemed investment grade by the Adviser, will
either carry a guarantee from an agency of the U.S. Government or a private
issuer of the timely payment of principal and interest (such guarantees do not
extend to the market value of such securities or the net asset value per share
of the portfolio) or, in the case of unrated securities, be sufficiently
seasoned that they are considered by the Adviser to be investment grade quality.
The Adviser may retain securities if their ratings fall below investment grade
if it deems retention of the security to be in the best interests of the
portfolio. Any portfolio permitted to hold Investment Grade Securities may hold
unrated securities if the Adviser considers the risks involved in owning that
security to be equivalent to the risks involved in holding an Investment Grade
Security.
    

Loan Participations: are loans or other direct debt instruments which are
interests in amounts owed by a corporate, governmental or other borrower to
another party. They may represent amounts owed to lenders or lending syndicates,
to suppliers of goods or services (trade claims or other receivables), or to
other parties. Direct debt instruments involve the risk of loss in case of
default or insolvency of the borrower. Direct debt instruments may offer less
legal protection to the portfolio in the event of fraud or misrepresentation. In
addition, loan participations involve a risk of insolvency of the lending bank
or other financial intermediary. Direct debt instruments may also include
standby financing commitments that obligate the investing portfolio to supply
additional cash to the borrower on demand. Loan participations involving
Emerging Markets Issuers may relate to loans as to which there has been or
currently exists an event of default or other failure to make payment when due,
and may represent amounts owed to financial institutions that are themselves
subject to political and economic risks, including the risk of currency
devaluation, expropriation, or failure. Such loan participations present
additional risks of default or loss.

Mortgage Securities--Mortgage-backed securities represent an ownership interest
in a pool of residential and commercial mortgage loans. Generally, these
securities are designed to provide monthly payments of interest and principal to
the investor. The mortgagee's monthly payments to his/her lending institution
are passed through to investors such as the portfolio. Most issuers or poolers
provide guarantees of payments, regardless of whether the mortgagor actually
makes the payment. The guarantees made by issuers or poolers are supported by
various forms of credit, collateral, guarantees or insurance, including
individual loan, title, pool and hazard insurance purchased by the issuer. The
pools are assembled by various governmental, government-related and private
organizations. Portfolios may invest in securities issued or guaranteed by the
Government National Mortgage Association (GNMA), Federal Home Loan Mortgage
Corporation (FHLMC), Fannie Mae, private issuers and other government agencies.
There can be no assurance that the private insurers can meet their obligations
under the policies. Mortgage Securities issued by non-agency issuers, whether or
not such securities are subject to guarantees, may entail greater risk. If there
is no guarantee provided by the issuer, mortgage-backed securities purchased by
the portfolio will be those which at time of purchase are rated investment grade
by one or more NRSRO, or, if unrated, are deemed by the Adviser to be of
investment grade quality.

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 35

<PAGE>



   
There are two methods of trading Mortgage Securities. A specified pool
transaction is a trade in which the pool number of the security to be delivered
on the settlement date is known at the time the trade is made. This is in
contrast with the typical Mortgage Security transaction, called a TBA (to be
announced) transaction, in which the type of Mortgage Securities to be delivered
is specified at the time of trade but the actual pool numbers of the securities
that will be delivered are not known at the time of the trade. The pool numbers
of the pools to be delivered at settlement will be announced shortly before
settlement takes place. The terms of the TBA trade may be made more specific if
desired. Generally, agency pass-through Mortgage Securities are traded on a TBA
basis.

A mortgage-backed bond is a collateralized debt security issued by a thrift or
financial institution. The bondholder has a first priority perfected security
interest in collateral, usually consisting of agency mortgage pass-through
securities, although other assets, including U.S. Treasuries (including Zero
Coupon U.S. Treasuries), agencies, cash equivalent securities, whole loans and
corporate bonds, may qualify. The amount of collateral must be continuously
maintained at levels from 115% to 150% of the principal amount of the bonds
issued, depending on the specific issue structure and collateral type.

Possible Risks: Due to the possibility that prepayments on home mortgages will
alter cash flow on Mortgage Securities, it is not possible to determine in
advance the actual final maturity date or average life. Like bonds in general,
mortgage-backed securities will generally decline in price when interest rates
rise. Rising interest rates also tend to discourage refinancings of home
mortgages, with the result that the average life of Mortgage Securities held by
a portfolio may be lengthened. This extension of average life causes the market
price of the securities to decrease further than if their average lives were
fixed. However, when interest rates fall, mortgages may not enjoy as large a
gain in market value due to prepayment risk because additional mortgage
prepayments must be reinvested at lower interest rates. Faster prepayment will
shorten the average life and slower prepayments will lengthen it. However, it is
possible to determine what the range of that movement could be and to calculate
the effect that it will have on the price of the security. In selecting these
securities, the Adviser will look for those securities that offer a higher yield
to compensate for any variation in average maturity.

Municipals--Municipal Securities: are debt obligations issued by local, state
and regional governments that provide interest income which is exempt from
federal income taxes. Municipals include both municipal bonds (those securities
with maturities of five years or more) and municipal notes (those with
maturities of less than five years). Municipal bonds are issued for a wide
variety of reasons: to construct public facilities, such as airports, highways,
bridges, schools, hospitals, mass transportation, streets, water and sewer
works; to obtain funds for operating expenses; to refund outstanding municipal
obligations; and to loan funds to various public institutions and facilities.
Certain industrial development bonds are also considered municipal bonds if
their interest is exempt from federal income tax. Industrial development bonds
are issued by or on behalf of public authorities to obtain funds for various
privately-operated manufacturing facilities, housing, sports arenas, convention
centers, airports, mass transportation systems and water, gas or sewage works.
Industrial development bonds are ordinarily dependent on the credit quality of a
private user, not the public issuer.
    

General obligation municipal bonds are secured by the issuer's pledge of full
faith, credit and taxing power. Revenue or special tax bonds are payable from
the revenues derived from a particular facility or, in some cases, from a
special excise or other tax, but not from general tax revenue. Municipal notes
are issued to meet the short-term funding

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MAS Fund - 36          Terms in bold type are defined in the Prospectus Glossary

<PAGE>




requirements of local, regional and state governments. Municipal notes include
bond anticipation notes, revenue anticipation notes and tax and revenue
anticipation notes. These are short-term debt obligations issued by state and
local governments to aid cash flows while waiting for taxes or revenue to be
collected, at which time the debt is retired. Other types of municipal notes in
which the portfolio may invest are construction loan notes, short-term discount
notes, tax-exempt commercial paper, demand notes, and similar instruments.
Demand notes permit an investor (such as the portfolio) to demand from the
issuer payment of principal plus accrued interest upon a specified number of
days' notice. The portfolios eligible to purchase municipal bonds may also
purchase AMT bonds. AMT bonds are tax-exempt private activity bonds issued after
August 7, 1986, the proceeds of which are directed, at least in part, to
private, for-profit organizations. While the income from AMT bonds is exempt
from regular federal income tax, it is a tax preference item in the calculation
of the alternative minimum tax. The alternative minimum tax is a special
separate tax that applies to a limited number of taxpayers who have certain
adjustments to income or tax preference items.

   
Preferred Stock: are non-voting ownership shares in a corporation which pay a
fixed or variable stream of dividends.
    

Repurchase Agreements: are transactions by which a portfolio purchases a
security and simultaneously commits to resell that security to the seller (a
bank or securities dealer) at an agreed upon price on an agreed upon date
(usually within seven days 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 date of maturity of the purchased security. Such agreements
permit the portfolio to keep all its assets at work while retaining overnight
flexibility in pursuit of investments of a longer term nature. The Adviser will
continually monitor the value of the underlying collateral to ensure that its
value, including accrued interest, always equals or exceeds the repurchase
price.

   
Pursuant to an order issued by the SEC, the Fund's portfolios may pool their
daily uninvested cash balances in order to invest in Repurchase Agreements on a
joint basis. By entering into Repurchase Agreements on a joint basis, it is
expected that the portfolios will incur lower transaction costs and potentially
obtain higher rates of interest on such Repurchase Agreements. Each portfolio's
participation in the income from jointly purchased Repurchase Agreements will be
based on that portfolio's percentage share in the total Repurchase Agreement.

Rights: represent a preemptive right of stockholders to purchase additional
shares of a stock at the time of a new issuance, before the stock is offered to
the general public, allowing the stockholder to retain the same ownership
percentage after the new stock offering.
    

SMBS--Stripped Mortgage-Backed Securities: are Derivatives in the form of
multi-class mortgage securities. SMBS may be issued by agencies or
instrumentalities of the U.S. Government and private originators of, or
investors in, mortgage loans, including savings and loan associations, mortgage
banks, commercial banks, investment banks and special purpose entities of the
foregoing.

SMBS are usually structured with two classes that receive different proportions
of the interest and principal distributions on a pool of mortgage assets. One
type of SMBS will have one class receiving some of the interest and most 

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 37

<PAGE>



of the principal from the mortgage assets, while the other class will receive
most of the interest and the remainder of the principal. In some cases, one
class will receive all of the interest (the interest-only or IO class), while
the other class will receive all of the principal (the principal-only or PO
class). The yield to maturity on IOs and POs is extremely sensitive to the rate
of principal payments (including prepayments) on the related underlying mortgage
assets, and a rapid rate of principal payments may have a material adverse
effect on a portfolio yield to maturity. If the underlying mortgage assets
experience greater than anticipated prepayments of principal, a portfolio may
fail to fully recoup its initial investment in these securities, even if the
security is in one of the highest rating categories.

Although SMBS are purchased and sold by institutional investors through several
investment banking firms acting as brokers or dealers, these securities were
only recently developed. As a result, established trading markets have not yet
developed and, accordingly, certain of these securities may be deemed illiquid
and subject to a portfolio's limitations on investment in illiquid securities.

   
Structured Investments: are Derivatives in the form of a unit or units
representing an undivided interest(s) in assets held in a trust that is not an
investment company as defined in the 1940 Act. A trust unit pays a return based
on the total return of securities and other investments held by the trust and
the trust may enter into one or more Swaps to achieve its objective. For
example, a trust may purchase a basket of securities and agree to exchange the
return generated by those securities for the return generated by another basket
or index of securities. A portfolio will purchase Structured Investments in
trusts that engage in such Swaps only where the counterparties are approved by
the Adviser in accordance with credit-risk guidelines established by the Board
of Trustees.
    

Structured Notes: are Derivatives on which the amount of principal repayment and
or interest payments is based upon the movement of one or more factors. These
factors include, but are not limited to, currency exchange rates, interest rates
(such as the prime lending rate and LIBOR) and stock indices such as the S&P 500
Index. In some cases, the impact of the movements of these factors may increase
or decrease through the use of multipliers or deflators. The use of Structured
Notes allows a portfolio to tailor its investments to the specific risks and
returns the Adviser wishes to accept while avoiding or reducing certain other
risks.

   
Swaps--Swap Contracts: are Derivatives in the form of a contract or other
similar instrument which is an agreement to exchange the return generated by one
instrument for the return generated by another instrument. The payment streams
are calculated by reference to a specified index and agreed upon notional
amount. The term specified index includes, but is not limited to, currencies,
fixed interest rates, prices and total return on interest rate indices,
fixed-income indices, stock indices and commodity indices (as well as amounts
derived from arithmetic operations on these indices). For example, a portfolio
may agree to swap the return generated by a fixed-income index for the return
generated by a second fixed-income index. The currency Swaps in which the
portfolios may enter will generally involve an agreement to pay interest streams
in one currency based on a specified index in exchange for receiving interest
streams denominated in another currency. Such Swaps may involve initial and
final exchanges that correspond to the agreed upon notional amount.

A portfolio will usually enter into Swaps on a net basis, i.e., the two return
streams are netted out in a cash settlement on the payment date or dates
specified in the instrument, with a portfolio receiving or paying, as the case
may be, 
    

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MAS Fund - 18          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
only the net amount of the two returns. A portfolio's obligations under a swap
agreement will be accrued daily (offset against any amounts owing to the
portfolio) and any accrued but unpaid net amounts owed to a swap counterparty
will be covered by the maintenance of a segregated account consisting of cash or
liquid securities. A portfolio will not enter into any swap agreement unless the
counterparty meets the rating requirements set forth in guidelines established
by the Board of Trustees.

Possible Risks: Interest rate and total rate of return Swaps do not involve the
delivery of securities, other underlying assets, or principal. Accordingly, the
risk of loss with respect to interest rate and total rate of return Swaps is
limited to the net amount of interest payments that a portfolio is contractually
obligated to make. If the other party to an interest rate or total rate of
return swap defaults, a portfolio's risk of loss consists of the net amount of
interest payments that a portfolio is contractually entitled to receive. In
contrast, currency swaps may involve the delivery of the entire principal value
of one designated currency in exchange for the other designated currency.
Therefore, the entire principal value of a currency swap may be subject to the
risk that the other party to the swap will default on its contractual delivery
obligations. If there is a default by the counterparty, a portfolio may have
contractual remedies pursuant to the agreements related to the transaction. The
swap market has grown substantially in recent years with a large number of banks
and investment banking firms acting both as principals and as agents utilizing
standardized swap documentation. As a result, the swap market has become
relatively liquid. Swaps that include caps, floors, and collars are more recent
innovations for which standardized documentation has not yet been fully
developed and, accordingly, they are less liquid than Swaps.

The use of Swaps is a highly specialized activity which involves investment
techniques and risks different from those associated with ordinary portfolio
securities transactions. If the Adviser is incorrect in its forecasts of market
values, interest rates, and currency exchange rates, the investment performance
of the portfolios would be less favorable than it would have been if this
investment technique were not used.
    

U.S. Governments--U.S. Treasury securities: are Fixed-Income Securities which
are backed by the full faith and credit of the U.S. Government as to the payment
of both principal and interest.

Warrants: are options issued by a corporation which give the holder the option
to purchase stock.

When-Issued Securities: are securities purchased at a certain price even though
the securities may not be delivered for up to 90 days. No payment or delivery is
made by a portfolio in a when-issued transaction until the portfolio receives
payment or delivery from the other party to the transaction. Although a
portfolio receives no income from the above described securities prior to
delivery, the market value of such securities is still subject to change. As a
consequence, it is possible that the market price of the securities at the time
of delivery may be higher or lower than the purchase price. A portfolio will
maintain with the custodian a segregated account consisting of cash or liquid
securities in an amount at least equal to these commitments.

   
Yankees: are U.S. dollar-denominated Fixed-Income Securities issued by a foreign
government or corporation and sold in the U.S.
    

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 39

<PAGE>



   
Zero Coupons--Zero Coupon Obligations: are Fixed-Income Securities that do not
make regular interest payments. Instead, zero coupon obligations are sold at
substantial discounts from their face value. The difference between a zero
coupon obligation's issue or purchase price and its face value represents the
imputed interest an investor will earn if the obligation is held until maturity.
Zero Coupons may offer investors the opportunity to earn higher yields than
those available on ordinary interest-paying obligations of similar credit
quality and maturity. However, zero coupon obligation prices may also exhibit
greater price volatility than ordinary Fixed-Income Securities because of the
manner in which their principal and interest are returned to the investor.
    


                         GENERAL SHAREHOLDER INFORMATION

PURCHASE OF SHARES

   
Adviser Class Shares are available to clients of the Adviser with combined
investments of $500,000 and Shareholder Organizations who have a contractual
arrangement with the Fund or the Fund's Distributor, including institutions such
as trusts, foundations or broker-dealers purchasing for the accounts of others.

Adviser Class Shares of each portfolio may be purchased at the net asset value
per share next determined after receipt of the purchase order. The portfolios
determine net asset value as described under General Shareholder
Information--Valuation of Shares each day that the portfolios are open. See
Other Information--Closed Holidays and General Shareholder
Information--Valuation of Shares.

Initial Purchase by Mail: Subject to acceptance by the Fund, an account may be
opened by completing and signing an Account Registration Form (provided at the
end of the prospectus) and mailing it to MAS Funds c/o Miller Anderson &
Sherrerd, LLP, One Tower Bridge, West Conshohocken, PA 19428-0868 together with
a check ($500,000 minimum) payable to MAS Funds.

The portfolios requested should be designated on the Account Registration Form.
Subject to acceptance by the Fund, payment for the purchase of shares received
by mail will be credited at the net asset value per share of the portfolio next
determined after receipt. Such payment need not be converted into Federal Funds
(monies credited to the Fund's Custodian Bank by a Federal Reserve Bank) before
acceptance by the Fund. Please note that payments to investors who redeem shares
purchased by check will not be made until payment of the purchase has been
collected, which may take up to eight business days after purchase. Shareholders
can avoid this delay by purchasing shares by wire.

Initial Purchase by Wire: Subject to acceptance by the Fund, Adviser Class
Shares of each portfolio may also be purchased by wiring Federal Funds to the
Fund's Custodian Bank, The Chase Manhattan Bank (see instructions below). A
completed Account Registration Form should be forwarded to MAS Funds' Client
Services Group in advance of the wire. For all portfolios, notification must be
given to MAS Funds' Client Services Group at 1-800-354-8185 prior to the
determination of net asset value. Adviser Class Shares will be purchased at the
net asset value per share next determined after receipt of the purchase order.
(Prior notification must also be received from investors
    

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MAS Fund - 40          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



with existing accounts.) Instruct your bank to send a Federal Funds Wire in a
specified amount to the Fund's Custodian Bank using the following wiring
instructions:

                         The Chase Manhattan Bank 
                         1 Chase Manhattan Plaza
                         New York, NY 10081 
                         ABA #021000021
                         DDA #910-2-734143
                         Attn: MAS Funds Subscription Account
                         Ref: (Portfolio Name, Account Number, Account Name)

   
Additional Investments: Additional investments of Adviser Class Shares at net
asset value may be made at any time (minimum additional investment $1,000) by
mailing a check (payable to MAS Funds) to MAS Funds' Client Services Group at
the address noted under Initial Purchase by Mail or by wiring Federal Funds to
the Custodian Bank as outlined above. Shares will be purchased at the net asset
value per share next determined after receipt of the purchase order. For all
portfolios, notification must be given to MAS Funds' Client Services Group at
1-800-354-8185 prior to the determination of net asset value.

Other Purchase Information: The Fund reserves the right, in its sole discretion,
to suspend the offering of any of its portfolios or to reject any purchase
orders when, in the judgment of management, such suspension or rejection is in
the best interest of the Fund. The Fund also reserves the right, in its sole
discretion, to waive the minimum initial and additional investment amounts.

Purchases of a portfolio's shares will be made in full and fractional shares of
the portfolio calculated to three decimal places. In the interest of economy and
convenience, certificates for shares will not be issued except at the written
request of the shareholder. Certificates for fractional shares, however, will
not be issued.

Adviser Class Shares of the Fund's portfolios are also sold to corporations or
other institutions such as trusts, foundations or broker-dealers purchasing for
the accounts of others (Shareholder Organizations). Investors purchasing and
redeeming shares of the portfolios through a Shareholder Organization may be
charged a transaction-based fee or other fee for the services of such
organization. Each Shareholder Organization is responsible for transmitting to
its customers a schedule of any such fees and information regarding any
additional or different conditions regarding purchases and redemptions.
Customers of Shareholder Organizations should read this Prospectus in light of
the terms governing accounts with their organization. The Fund may pay
compensation to or receive compensation from Shareholder Organizations for the
sale of Adviser Class Shares.

REDEMPTION OF SHARES
    

Shares of each portfolio may be redeemed by mail, or, if authorized, by
telephone. No charge is made for redemptions. The value of shares redeemed may
be more or less than the purchase price, depending on the net asset value 

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 41

<PAGE>




   
at the time of redemption which is based on the market value of the investment
securities held by the portfolio. See Other Information-Closed Holidays and
Valuation of Shares.

By Mail: Each portfolio will redeem shares at the net asset value next
determined after the request is received in good order. Requests should be
addressed to MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge,
West Conshohocken, PA 19428-0868.

To be in good order, redemption requests must include the following
documentation:
    

(a) The share certificates, if issued;

(b) A letter of instruction, if required, or a stock assignment specifying the
number of shares or dollar amount to be redeemed, signed by all registered
owners of the shares in the exact names in which the shares are registered;

(c) Any required signature guarantees (see Signature Guarantees); and

(d) Other supporting legal documents, if required, in the case of estates,
trusts, guardianships, custodianships, corporations, pension and profit sharing
plans and other organizations.

Signature Guarantees: To protect your account, the Fund and the Administrator
from fraud, signature guarantees are required to enable the Fund to verify the
identity of the person who has authorized a redemption from an account.
Signature guarantees are required for (1) redemptions where the proceeds are to
be sent to someone other than the registered shareholder(s) and the registered
address, and (2) share transfer requests. Please contact MAS Funds' Client
Services Group for further details.

By Telephone: Provided the Telephone Redemption Option has been authorized by
the shareholder on the Account Registration Form, a redemption of shares may be
requested by calling MAS Funds' Client Services Group and requesting that the
redemption proceeds be mailed to the primary registration address or wired per
the authorized instructions. Shares cannot be redeemed by telephone if share
certificates are held for those shares.

By Facsimile: Written requests in good order (see above) for redemptions,
exchanges, and transfers may be forwarded to the Fund via facsimile. All
requests sent to the Fund via facsimile must be followed by a telephone call to
MAS Funds' Client Services Group to ensure that the instructions have been
properly received by the Fund. The original request must be promptly mailed to
MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge, West
Conshohocken, PA 19428-0868.

Neither the Distributor nor the Fund will be responsible for any loss,
liability, cost, or expense for acting upon facsimile instructions or upon
telephone instructions that they reasonably believe to be genuine. In order to
confirm that telephone instructions in connection with redemptions are genuine,
the Fund and Distributor will provide written confirmation of transactions
initiated by telephone. 

- --------------------------------------------------------------------------------
MAS Fund - 42          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
Payment of the redemption proceeds will ordinarily be made within three business
days after receipt of an order for a redemption. The fund may suspend the right
of redemption or postpone the date of redemption at times when the New York
Stock Exchange ("NYSE"), the custodian, or the fund is closed (see Other
Information-Closed Holidays) or under any emergency circumstances as determined
by the SEC.

If the Board of Trustees determines that it would be detrimental to the best
interset of the remaining shareholders of the Fund to make payment wholly or
partly in cash, the Fund may pay the redemption proceeds in whole or in part by
a distribution in-kind of readily marketable securities held by a portfolio in
lieu of cash in conformity with applicable rules of the SEC. Investors may incur
brokerage charges on the sale of portfolio securities received in such payments
of redemptions.

SHAREHOLDER SERVICES

Exchange Privilege: Each portfolio's Adviser Class Shares may be exchanged for
shares of the Fund's other portfolios offering Adviser Class Shares based on the
respective net asset values of the shares involved. The exchange privilege is
only available, however, with respect to portfolios that are qualified for sale
in a shareholder's state of residence. There are no exchange fees. Exchange
requests should be sent to MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One
Tower Bridge, West Conshohocken, PA 19428-0868.

Because an exchange of shares amounts to a redemption from one portfolio and
purchase of shares of another portfolio, the above information regarding
purchase and redemption of shares applies to exchanges. Shareholders should note
that an exchange between portfolios is considered a sale and purchase of shares.
The sale of shares may result in a capital gain or loss for tax purposes.
    

The officers of the Fund reserve the right not to accept any request for an
exchange when, in their opinion, the exchange privilege is being used as a tool
for market timing. The Fund reserves the right to change the terms or conditions
of the exchange privilege discussed herein upon sixty days' notice.

Transfer of Registration: The registration of Fund shares may be transferred by
writing to MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge,
West Conshohocken, PA 19428-0868. As in the case of redemptions, the written
request must be received in good order as defined above. Unless shares are being
transferred to an existing account, requests for transfer must be accompanied by
a completed Account Registration Form for the receiving party.

       

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 43

<PAGE>


   
VALUATION OF SHARES

Equity, International Equity, Mid Cap Growth, Mid Cap Value and Value
Portfolios:

Net asset value per share is determined by dividing the total market value of
each portfolio's investments and other assets, less any liabilities, by the
total outstanding shares of that portfolio. Net asset value per share is
determined as of the close of the NYSE (normally 4:00 p.m. Eastern Time) on each
day the portfolio is open for business (See Other Information-Closed Holidays).
Equity Securities listed on a U.S. securities exchange or Nasdaq for which
market quotations are available are valued at the last quoted sale price on the
day the valuation is made. Price information on listed Equity Securities is
taken from the exchange where the security is primarily traded. Equity
Securities listed on a foreign exchange are valued at the latest quoted sales
price available before the time when assets are valued. For purposes of net
asset value per share, all assets and liabilities initially expressed in foreign
currencies are converted into U.S. dollars at the bid price of such currencies
against U.S. dollars. Unlisted Equity Securities and listed U.S. Equity
Securities not traded on the valuation date for which market quotations are
readily available are valued at the mean of the most recent quoted bid and asked
price. The values of other assets and securities for which no quotations are
readily available (including restricted securities), and, to the extent
permitted by the SEC, securities for which the value has been materially
affected by events occurring after the close of the market on which they
principally trade, are determined in good faith at fair value using methods
approved by the Trustees.

Domestic Fixed Income, Fixed Income and High Yield Portfolios:

Net asset value per share is computed by dividing the total value of the
investments and other assets of the portfolio, less any liabilities, by the
total outstanding shares of the portfolio. The net asset value per share is
determined as of one hour after the close of the bond markets (normally 4:00
p.m. Eastern Time) on each day the portfolio is open for business (See Other
Information-Closed Holidays). Bonds and other Fixed Income Securities listed on
a foreign exchange are valued at the latest quoted sales price available before
the time when assets are valued. For purposes of net asset value per share, all
assets and liabilities initially expressed in foreign currencies will be
converted into U.S. dollars at the bid price of such currencies against U.S.
dollars.
    

Net asset value includes interest on bonds and other Fixed-Income Securities
which is accrued daily. Bonds and other Fixed-Income Securities which are traded
over the counter and on an exchange will be valued according to the broadest and
most representative market, and it is expected that for bonds and other
Fixed-Income Securities this ordinarily will be the over-the-counter market.

However, bonds and other Fixed-Income Securities may be valued on the basis of
prices provided by a pricing service when such prices are believed to reflect
the fair market value of such securities. The prices provided by a pricing
service are determined without regard to bid or last sale prices but take into
account institutional size trading in similar groups of securities and any
developments related to specific securities. Bonds and other Fixed-Income
Securities not priced in this manner are valued at the most recent quoted bid
price, or when stock exchange valuations are used, at the latest quoted sale
price on the day of valuation. If there is no such reported sale, the latest
quoted bid price will be used. Securities purchased with remaining maturities of
60 days or less are valued at amortized cost when the Board of Trustees
determines that amortized cost reflects fair value. In the event that amortized
cost 

- --------------------------------------------------------------------------------
MAS Fund - 44          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
does not approximate market, market prices as determined above will be used.
Other assets and securities, for which no quotations are readily available
(including restricted securities), and, to the extent permitted by the SEC,
securities for which the value has been materially affected by events occurring
after the close of the market on which they principally trade, will be valued in
good faith at fair value using methods approved by the Board of Trustees.

Balanced and Multi-Asset-Class Portfolios: Net asset value per share is computed
by dividing the total value of the investments and other assets of the
portfolio, less any liabilities, by the total outstanding shares of the
portfolio. The net asset value per share of the Balanced Portfolio is determined
as of the later of the close of the NYSE or one hour after the close of the bond
markets on each day the portfolio is open for business. Equity, fixed-income and
other securities held by the portfolio will be valued using the policies
described above.

All Portfolios: Net asset value per share for Investment Class Shares,
Institutional Class Shares and Adviser Class Shares may differ due to class-
specific expenses paid by each class, and the shareholder servicing fees charged
to Investment Class Shares and distribution fees charged to Adviser Class
Shares.

DIVIDENDS, DISTRIBUTIONS AND TAXES: Dividends and Distributions: The Fund
maintains different dividend and distribution policies for each portfolio. These
are:

o    The Equity, Value, Domestic Fixed Income, Fixed Income, High Yield,
     Balanced and Multi-Asset-Class Portfolios normally distribute substantially
     all of their net investment income to shareholders on a quarterly basis.

o    The International Equity, Mid Cap Growth and Mid Cap Value Portfolios
     normally distribute substantially all of their net investment income on an
     annual basis.

     If any portfolio does not have income available to distribute, as
     determined in compliance with the appropriate tax laws, no distribution
     will be made.

     If any net gains are realized from the sale of underlying securities, the
     portfolios normally distribute such gains with the last distribution for
     the calendar year.

All dividends and capital gains distributions are automatically paid in
additional shares of the portfolio unless the shareholder elects otherwise. Such
election must be made in writing to the Fund and may be made on the Account
Registration Form.

In all portfolios, undistributed net investment income is included in the
portfolio's net assets for the purpose of calculating net asset value per share.
Therefore, on the ex-dividend date, the net asset value per share excludes the
dividend (i.e., is reduced by the per share amount of the dividend). Dividends
paid shortly after the purchase of shares by an investor, although in effect a
return of capital, are taxable as ordinary income.

Certain Mortgage Securities may provide for periodic or unscheduled payments of
principal and interest as the mortgages underlying the securities are paid or
prepaid. However, such principal payments (not otherwise characterized as
ordinary discount income or bond premium expense) will not normally be
considered as income to the portfolio and therefore will not be distributed as
dividends. Rather, these payments on mortgage-backed securities will be
reinvested on behalf of the shareholders by the portfolio in accordance with its
investment objectives and policies. 
    
- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 45

<PAGE>



   
TAXES: The following is a summary of some important tax issues that affect the
portfolios of the Fund and their shareholders. The summary is based on current
tax laws and regulations, which may be changed by legislative, judicial or
administrative action. No attempt has been made to present a detailed
explanation of the tax treatment of each portfolio or its shareholders. More
information about taxes is in the Statement of Additional Information.
Shareholders are urged to consult their tax advisors regarding specific
questions as to federal, state and local income taxes.

Federal Taxes: Each portfolio of the Fund is treated as a separate entity for
federal income tax purposes and intends to qualify for the special tax treatment
afforded regulated investment companies. As such, each portfolio will not be
subject to federal income tax to the extent it distributes net investment
company taxable income and net capital gains to shareholders. The Fund will
notify shareholders annually as to the tax classification of all distributions.

Income dividends received by shareholders will be taxable as ordinary income,
whether received in cash or in additional shares. In the case of the Equity,
Value, Mid Cap Value, Mid Cap Growth, Balanced and Multi-Asset-Class Portfolios,
corporate shareholders may be entitled to a dividends-received deduction for the
portion of dividends they receive which are attributable to dividends received
by such portfolios from U.S. corporations. Capital gains distributions are
taxable to shareholders at capital gains rates. Each portfolio will designate
capital gains distributions to individual shareholders as either subject to the
federal capital gains rate imposed on property held for more than 18 months or
on property held for more than 1 year but not more than 18 months.

Distributions paid in January but declared by a portfolio in October, November
or December of the previous year are taxable to shareholders in the previous
year.

Each portfolio intends to declare and pay dividends and distributions so as to
avoid imposition of the federal excise tax applicable to regulated investment
companies. Further discussion is included in the Statement of Additional
Information.

The Fund is required by federal law to withhold 31% of reportable payments
(which may include dividends and capital gains distributions) paid to
shareholders. In order to avoid this withholding requirement, shareholders must
certify on their Account Registration Forms that their Social Security Number or
Taxpayer Identification Number is correct, and that they are not subject to
backup withholding.

Exchanges and redemptions of shares in a portfolio are taxable events.

Foreign Income Taxes: Investment income received by the portfolios from sources
within foreign countries may be subject to foreign income taxes withheld at
source. The International Equity and Multi-Asset-Class Portfolios may be able to
file an election with the Internal Revenue Service to pass through to their
shareholders for foreign tax credit purposes, the amount of foreign income taxes
paid by each such portfolio. Further discussion is included in the Statement of
Additional Information. The other portfolios will not be able to make this
election.
    

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MAS Fund - 46          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
State and Local Income Taxes: The Fund is formed as a Pennsylvania Business
Trust and is not liable for any corporate income or franchise tax in the
Commonwealth of Pennsylvania. Shareholders should consult their tax advisors for
the state and local income tax consequences of distributions from the
portfolios.

TRUSTEES OF THE TRUST: The affairs of the Trust are supervised by the Trustees
under the laws governing business trusts in the Commonwealth of Pennsylvania.
The Trustees have approved contracts under which, as described above, certain
companies provide essential management, administrative and shareholder services
to the Trust.

INVESTMENT ADVISER: The Investment Adviser to the Fund, Miller Anderson &
Sherrerd, LLP (the "Adviser"), is a Pennsylvania limited liability partnership
founded in 1969, wholly owned by indirect subsidiaries of Morgan Stanley, Dean
Witter, Discover & Co., and is located at One Tower Bridge, West Conshohocken,
PA 19428. The Adviser provides investment services to employee benefit plans,
endowment funds, foundations and other institutional investors and as of
December 31, 1997 had in excess of $58.1 billion in assets under management. On
May 31, 1997, Morgan Stanley Group Inc., then the indirect parent of the
Adviser, merged with Dean Witter, Discover & Co. to form Morgan Stanley, Dean
Witter, Discover & Co. In connection with this transaction, the Adviser entered
into a new Investment Management Agreement ("Agreement") with MAS Funds dated
May 31, 1997, which Agreement was approved by the shareholders of each portfolio
at a special meeting held on May 1, 1997 or at an adjournment of such meeting
held on May 12, 1997. The Adviser will retain its name and remain at its current
location, One Tower Bridge, West Conshohocken, PA 19428. The Adviser will
continue to provide investment counseling services to employee benefit plans,
endowments, foundations and other institutional investors.

Under the Agreement with the Fund, the Adviser, subject to the control and
supervision of the Fund's Board of Trustees and in conformance with the stated
investment objectives and policies of each portfolio of the Fund, manages the
investment and reinvestment of the assets of each portfolio of the Fund. In this
regard, it is the responsibility of the Adviser to make investment decisions for
the Fund's portfolios and to place each portfolio's purchase and sales orders.
As compensation for the services rendered by the Adviser under the Agreement,
each portfolio pays the Adviser an advisory fee calculated by applying a
quarterly rate. The following table shows the Adviser's contractual rate
(annualized) along with the Adviser's actual rate of compensation for the Fund's
1997 fiscal year.
    

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 47

<PAGE>



   
                                                                  FY 1997
                                             Contractual          Actual
                                                Rate          Compensation Rate
                                             -----------      -----------------
Equity Portfolio                               .500%               .500%
International Value Portfolio                  .500                .500
Mid Cap Growth Portfolio                       .500                .500
Mid Cap Value Portfolio                        .750                .727
Value Portfolio                                .500                .500
Domestic Fixed Income Portfolio                .375                .364
Fixed Income Portfolio                         .375                .375
High Yield Portfolio                           .375                .375
Balanced Portfolio                             .450                .450
Multi-Asset-Class Portfolio                    .650                .528
                                                                     
The Adviser is, on a voluntary basis, waiving a portion of its fee and/or
reimbursing certain expenses for the Multi-Asset-Class Portfolio. Absent such
waivers and/or reimbursements by the Adviser, Total Operating Expenses would be
1.086%. These fee waivers and expense reimbursements are voluntary and may be
discontinued at any time at the Adviser's discretion.

PORTFOLIO MANAGEMENT

A description of the business experience during the past five years for each of
the investment professionals who are primarily responsible for the day-to-day
management of the Fund's portfolios is as follows:
    

Robert E. Angevine, Principal, Morgan Stanley, joined Morgan Stanley Asset
Management in 1988. He assumed responsibility for the High Yield Portfolio in
1996.

Arden C. Armstrong, Managing Director, Morgan Stanley, joined MAS in 1986. She
assumed responsibility for the Mid Cap Growth Portfolio in 1990, the Growth
Portfolio in 1993 and the Equity Portfolio in 1994.

   
Richard M. Behler, Principal, Morgan Stanley, joined MAS in 1995. He served as a
Portfolio Manager from 1992 through 1995 for Moore Capital Management. He
assumed responsibility for the Value Portfolio in 1996.

Thomas L. Bennett, Managing Director, Morgan Stanley, joined MAS in 1984. He
assumed responsibility for the Fixed Income Portfolio in 1984, the Domestic
Fixed Income Portfolio 1987, the High Yield Portfolio in 1985, the Fixed Income
Portfolio II in 1990, the Special Purpose Fixed Income and Balanced Portfolio in
1992, the Multi-Asset-Class Portfolio in 1994, the Balanced Plus Portfolio in
1996 and the Multi-Market Fixed Income Portfolio in 1997.
    

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MAS Fund - 48          Terms in bold type are defined in the Prospectus Glossary

<PAGE>



Bradley S. Daniels, Vice President, Morgan Stanley, joined MAS in 1985. He
assumed responsibility for the Small Cap Value Portfolio in 1986 and the Mid Cap
Value Portfolio in 1994.

   
Kenneth B. Dunn, Managing Director, Morgan Stanley, joined MAS in 1987. He
assumed responsibility for the Fixed Income and the Domestic Fixed Income
Portfolios in 1987, the Fixed Income II Portfolio in 1990, the Mortgage-Backed
Securities and Special Purpose Fixed Income Portfolios in 1992, and the
Municipal PA, Municipal Portfolios in 1994 and the Multi-Market Fixed Income
Portfolio in 1997.

Hassan Elmasry, Principal, Morgan Stanley, joined MAS in 1995. He served as
First Vice President & International Equity Portfolio Manager from 1987 through
1995 for Mitchell Hutchins Asset Management. He assumed responsibility for the
International Equity Portfolio in 1996.

Stephen F. Esser, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the High Yield Portfolio in 1989 and the Multi-Market
Fixed Income Portfolio in 1997.
    

William B. Gerlach, Vice President, Morgan Stanley, joined MAS in 1991. He
assumed responsibility for the Small Cap Value and Mid Cap Value Portfolios in
1996.

   
J. David Germany, Managing Director, Morgan Stanley, joined MAS in 1991. He
assumed responsibility for the Global Fixed Income and International Fixed
Income Portfolios in 1993, the Multi-Asset-Class Portfolio in 1994, the Balanced
Plus Portfolio in 1996 and the Multi-Market Fixed Income Portfolio in 1997.

Ellen D. Harvey, Principal, Morgan Stanley, joined MAS in 1984. She assumed
responsibility for the Cash Reserves Portfolio in 1990, the Limited Duration
Portfolio in 1992 and the Intermediate Duration Portfolio in 1994.

Abhi Y. Kanitkar, Vice President, Morgan Stanley, joined MAS in 1994. He served
as an Investment Analyst from 1993 through 1994 for Newbold's Asset Management.
He assumed responsibility for the Mid Cap Growth Portfolio in 1996.
    

Nicholas J. Kovich, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the Equity Portfolio in 1994 and the Value Portfolio
in 1997.

   
Brian Kramp, Vice President, Morgan Stanley, joined MAS in 1997. He served as
Analyst/Portfolio Manager for Meridian Asset Management, and its successor,
Corestates Investment Advisors from 1985-1997. He assumed responsibility for the
Value Portfolio in 1998.

Steven K. Kreider, Principal, Morgan Stanley, joined MAS in 1988. He assumed
responsibility for the Municipal and the PA Municipal Portfolios in 1992.
    

- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 49

<PAGE>



   
Chris Leavy, Morgan Stanley, joined MAS in 1997. He served as a Portfolio
Manager for Capitoline Investment Services from 1995-1997; a Portfolio Manager
for Premier Trust Company from 1994 to 1995; and as a Research Analyst for Leavy
Investment Management from 1993-1994. He assumed responsibility for the Mid Cap
Value and Small Cap Value Portfolio in 1998.

Robert J. Marcin, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for the Value Portfolio in 1990 and the Equity Portfolio
in 1994.

Scott F. Richard, Managing Director, Morgan Stanley, joined MAS in 1992. He
assumed responsibility for the Mortgage-Backed Securities Portfolio in 1992, the
Limited Duration, Intermediate Duration, Municipal and PA Municipal Portfolios
in 1994 and the Advisory Mortgage Portfolio in 1995. 

Christian G. Roth, Principal, Morgan Stanley, joined MAS in 1991. He assumed
responsibility for the Limited Duration and Intermediate Duration Portfolios in
1994.

Gary G. Schlarbaum, Managing Director, Morgan Stanley; Director, MAS Fund
Distribution, Inc.; joined MAS in 1987. He assumed responsibility for the Equity
and Small Cap Value Portfolios in 1987, the Growth Portfolio in 1993, the
Balanced Portfolio in 1992 and the Multi-Asset-Class and Mid Cap Value
Portfolios in 1994.

Horacio A. Valeiras, Principal, Morgan Stanley, joined MAS in 1992. He assumed
responsibility for the International Equity Portfolio in 1992, the Emerging
Markets Value Portfolioin 1993, the Multi-Asset-Class Portfolio in 1994 and the
Balanced Portfolio in 1996.

Richard B. Worley, Managing Director, Morgan Stanley, joined MAS in 1978. He
assumed responsibility for the Fixed Income Portfolio in 1984, the Domestic
Fixed Income Portfolio in 1987, the Fixed Income Portfolio II in 1990, the
Balanced and Special Purpose Fixed Income Portfolios in 1992, the Balanced Plus
Portfolio in 1996, the Global Fixed Income and International Fixed Income
Portfolios in 1993, the Multi-Asset-Class Portfolio in 1994 and the Multi-Market
Fixed Income Portfolio in 1997.

ADMINISTRATIVE SERVICES: MAS serves as Administrator to the Fund pursuant to an
Administration Agreement dated as of November 18, 1993. Under its Administration
Agreement with the Fund, MAS receives an annual fee, accrued daily and payable
monthly, of 0.08% of the Fund's average daily net assets, and is responsible for
all fees payable under any sub-administration agreements. Chase Global Funds
Services Company, a subsidiary of The Chase Manhattan Bank, 73 Tremont Street,
Boston MA 02108-3913, serves as Transfer Agent to the Fund pursuant to an
agreement also dated as of November 18, 1993, and provides fund accounting and
other services pursuant to a sub-administration agreement with MAS as
Administrator.

GENERAL DISTRIBUTION AGENT: Shares of the Fund are distributed exclusively
through MAS Fund Distribution, Inc., a wholly-owned subsidiary of the Adviser.
    

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MAS Fund - 50         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
DISTRIBUTION PLAN: Adviser Class Shares are sold without a sales charge, but are
subject to a Rule 12b-1 fee. The Fund, on behalf of the applicable portfolio,
will make monthly payments to the Fund's distributor under the Distribution Plan
approved by the Board of Trustees at an annual rate of up to .25% of each
portfolio's average daily net assets attributable to Adviser Class Shares. The
Fund's distributor will use the Rule 12b-1 fee it receives for (i) compensation
for its services in connection with distribution assistance or provision of
shareholder or account maintenance services, or (ii) payments to financial
intermediaries, plan fiduciaries, and investment professionals, including the
Adviser, for providing distribution support services, and/or account maintenance
services to shareholders (including, where applicable, any underlying beneficial
owners) of Adviser Class Shares.

PORTFOLIO TRANSACTIONS: The investment advisory agreement authorizes the Adviser
to select the brokers or dealers that will execute the purchases and sales of
investment securities for each of the Fund's portfolios and directs the Adviser
to use its best efforts to obtain the best execution with respect to all
transactions for the portfolios. In doing so, a portfolio may pay higher
commission rates or markups on principal transactions than the lowest available
when the Adviser believes it is reasonable to do so in light of the value of the
research, statistical, and pricing services provided by the broker or dealer
effecting the transaction.

It is not the Fund's practice to allocate brokerage or principal business on the
basis of sales of shares which may be made through intermediary brokers or
dealers. However, the Adviser may place portfolio orders with qualified
broker-dealers who recommend the Fund's portfolios or who act as agents in the
purchase of shares of the portfolios for their clients.

Some securities considered for investment by each of the Fund's portfolios may
also be appropriate for other clients served by the Adviser. The Adviser may
place a combined order for two or more accounts or portfolios for the purchase
or sale of one same security if, in its judgement, joint execution is in the
best interest of each participant and will result in best price and execution.
If purchase or sale of securities consistent with the investment policies of a
portfolio and one or more of these other clients served by the Adviser is
considered at or about the same time, transactions in such securities will be
allocated among the portfolio and clients in a manner deemed fair and reasonable
by the Adviser. Although there is no specified formula for allocating such
transactions, the various allocation methods used by the Adviser, and the
results of such allocations, are subject to periodic review by the Fund's
Trustees. The Adviser may use its broker dealer affiliates, including Morgan
Stanley & Co., a wholly owned subsidiary of Morgan Stanley, Dean Witter,
Discover & Co., the parent of MAS's general partner and limited partner, to
carry out the Fund's transactions, provided the Fund receives brokerage services
and commission rates comparable to those of other broker dealers.

OTHER INFORMATION: Description of Shares and Voting Rights: The Fund was
established under Pennsylvania law by a Declaration of Trust dated February 15,
1984, as amended and restated as of November 18, 1993. The Fund is authorized to
issue an unlimited number of shares of beneficial interest, without par value,
from an unlimited number of series (portfolios) of shares. Currently the Fund
consists of twenty-seven portfolios.
    

The shares of each portfolio of the Fund are fully paid and non-assessable, and
have no preference as to conversion, exchange, dividends, retirement or other
features. The shares of each portfolio of the Fund have no preemptive rights.

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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 51

<PAGE>



The shares of the Fund have non-cumulative voting rights, which means that the
holders of more than 50% of the shares voting for the election of Trustees can
elect 100% of the Trustees if they choose to do so. Shareholders are entitled to
one vote for each full share held (and a fractional vote for each fractional
share held), then standing in their name on the books of the Fund.

   
Meetings of shareholders will not be held except as required by the 1940 Act and
other applicable law. A meeting will be held to vote on the removal of a Trustee
or Trustees of the Fund if requested in writing by the holders of not less than
10% of the outstanding shares of the Fund. The Fund will assist in shareholder
communication in such matters to the extent required by law.

As of January 5, 1998 Northern Trust Company (Chicago, Il) owned a controlling
interest (as that term is defined under the 1940 Act) of the Balanced Portfolio.

Custodians: The Chase Manhattan Bank, New York, NY and Morgan Stanley Trust
Company (NY), Brooklyn, NY serve as custodians for the Fund. The custodians hold
cash, securities and other assets as required by the 1940 Act.
    

Transfer and Dividend Disbursing Agent: Chase Global Funds Services Company, a
subsidiary of The Chase Manhattan Bank, 73 Tremont Street, Boston, MA
02108-3913, serves as the Funds' Transfer Agent and dividend disbursing agent.

   
Reports: Shareholders receive semi-annual and annual financial statements.
Annual financial statements are audited by Price Waterhouse LLP, independent
accountants. 

Litigation: The Fund is not involved in any litigation.

Closed Holidays: Currently, the weekdays on which the Fund is closed for
business are: New Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good
Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and
Christmas Day.
    

TRUSTEES AND OFFICERS

The following is a list of the Trustees and the principal executive officers of
the Fund and a brief statement of their present positions and principal
occupations during the past five years:

Thomas L. Bennett,* Chairman of the Board of Trustees; Managing Director, Morgan
Stanley; Portfolio Manager and member of the Executive Committee, Miller
Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.; formerly
Director, Morgan Stanley Universal Funds, Inc.

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MAS Fund - 52         Terms in bold type are defined in the Prospectus Glossary

<PAGE>



   
Thomas P. Gerrity, Trustee; Dean and Reliance Professor of Management and
Private Enterprise, Wharton School of Business, University of Pennsylvania;
Director, Digital Equipment Corporation; Director, Sun Company, Inc.; Director,
Fannie Mae; Director, Reliance Group Holdings; Director, CVS Corporation;
Director, Union Carbide Corporation.
    

Joseph P. Healey, Trustee; Headmaster, Haverford School; formerly Dean, Hobart
College; Associate Dean, William & Mary College.

Joseph J. Kearns, Trustee; Vice President and Treasurer, The J. Paul Getty
Trust; Director, Electro Rent Corporation; Trustee, Southern California Edison
Nuclear Decommissioning Trust; Director, The Ford Family Foundation.

   
Vincent R. McLean, Trustee; Director, Legal and General America, Inc., Director,
William Penn Life Insurance Company of New York; formerly Executive Vice
President, Chief Financial Officer, Director and Member of the Executive
Committee of Sperry Corporation (now part of Unisys Corporation).
    

C. Oscar Morong, Jr., Trustee; Managing Director, Morong Capital Management;
Director, Ministers and Missionaries Benefit Board of American Baptist Churches,
The Indonesia Fund, The Landmark Funds; formerly Senior Vice President and
Investment Manager for CREF, TIAA-CREF Investment Management, Inc.

   
*Trustee Bennett is deemed to be an "interested person" of the Fund as that term
is defined in the Investment Company Act of 1940, as amended.
    

- --------------------------------------------------------------------------------

James D. Schmid, President, MAS Funds; Principal, Morgan Stanley; Head of Mutual
Funds, Miller Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.;
Chairman of the Board of Directors, The Minerva Fund, Inc.; formerly Vice
President, The Chase Manhattan Bank.

   
Lorraine Truten, CFA, Vice President, MAS Funds; Principal, Morgan Stanley; Head
of Mutual Fund Services, Miller Anderson & Sherrerd, LLP; President, MAS Fund
Distribution, Inc.
    

John H. Grady, Jr., Secretary, MAS Funds; Partner, Morgan, Lewis & Bockius LLP;
formerly Attorney, Ropes & Gray.
                                           
- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 53


<PAGE>

<TABLE>
<S>                            <C>   
- ------------------------------------------------------------------------------------------------------------------------------------
  MAS                                              ACCOUNT REGISTRATION FORM
- ---------
MAS FUNDS                                         Mas Fund Distribution, Inc.   
                                                   General Distribution Agent   
- ------------------------------------------------------------------------------------------------------------------------------------
(1) 
REGISTRATION/PRIMARY           |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
MAILING ADDRESS 
                               |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|

                               Attention |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
Confirmations and month-end
statements will be mailed to   Street or P.O. Box  |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
this address.
                               City  |_|_|_|_|_|_|_|_|_|  State |_|_|  Zip |_|_|_|_|_|-|_|_|_|_|

                               Telephone No. |_|_|_|-|_|_|_|_|-|_|_|_|_|

                               Form of Business Entity: |_| Corporation  |_| Partnership  |_| Trust  |_| Other______________________

                               Type of Account:|_| Defined Benefit Plan |_| Defined Contribution Plan |_| Profit Sharing/Thrift Plan
                                                                                                               
                                               |_| Other Employee Benefit Plan _____________________________________________________

                                               |_| Endowment |_| Foundation  |_| Taxable  |_| Other (Specify)_______________________

      |_| United State Citizen  |_| Resident Alien  |_| Non-Resident Alien, Indicate Country of Residence __________________________

   
- ------------------------------------------------------------------------------------------------------------------------------------
(2)
Interested Party
Option                         Attention  |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_

In addition to the account     Company 
statement sent to the above    (If Applicable)  |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_
registered address, the Fund   
is authorized to mail          Street or P.O. Box |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_
duplicate statements to the
name and address provided at   City  |_|_|_|_|_|_|_|_|_|  State |_|_|  Zip |_|_|_|_|_|-|_|_|_|_|
right

For additional interested      Telephone No. |_|_|_|-|_|_|_|_|-|_|_|_|_|
party mailings, please attach
a separate sheet.
- ------------------------------------------------------------------------------------------------------------------------------------
(3)
INVESTMENT                     |_| Equity Portfolio                        $__________________________________
For Purchase of:               |_| International Equity Portfolio          $__________________________________
                               |_| Mid Cap Growth Portfolio                $__________________________________
                               |_| Mid Cap Value Portfolio                 $__________________________________
                               |_| Value Portfolio                         $__________________________________
                               |_| Domestic Fixed Income Portfolio         $__________________________________
                               |_| Fixed Income Portfolio                  $__________________________________
                               |_| High Yield Portfolio                    $__________________________________
                               |_| Balanced Portfolio                      $__________________________________
                               |_| Multi-Asset-Class Portfolio             $__________________________________

- ------------------------------------------------------------------------------------------------------------------------------------
    
(4)  Taxpayer Identification Number                           Important Tax Information     
     Part 1.                                                                    
                                            You (as a payee) are required by law to provide us (as payer)     
      Social Security Number                with your correct taxpayer identification number. Accounts that  
     |_|_|_|-|_|_|-|_|_|_|_|                have a missing or incorrect taxpayer identification number will   
                                            be subject to backup withholding at a 31% rate on ordinary income 
               or                           and capital gains distribution as well as redemptions. Backup 
                                            withholding is not an additional tax; the tax liability of person 
  Employer Identification Number            subjects to backup withholding will be reduced by the amount of   
      |_|_|-|_|_|_|_|_|_|_|                 tax withheld.                                                     
                                                                                                              
                                            You may be notified that you are subject to backup withholding    
Part 2. Backup Withholding                  under section 3406(a)(1)(C) because you have underreported        
|_| Check the box if the account is         interest or dividends or you were required to, but failed to,     
subject to Backup Withholding under the     file a return which would have included a reportable interest or  
provisions of Section 340(a)(1)(C) of       dividend payment. If you have been so notified, check the box in 
the Internal Revenue Code.                  PART 2 at left.                                                    
                                                                                                              
 -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>
MILLER
ANDERSON
& SHERRERD, LLP    ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- --------------------------------------------------------------------------------
                                                                 SIDE ONE OF TWO

<PAGE>

- --------------------------------------------------------------------------------
  MAS     
- ---------                                                                 
MAS FUNDS       
- --------------------------------------------------------------------------------

(5)  TELEPHONE REDEMPTION OPTION
          
Please sign below if you wish to redeem or exchange shares by telephone.
Redemption proceeds requested by phone may only be mailed to the account's
primary registration address or wired according to bank instructions provided in
writing. A signature guarantee is required if the bank account listed below is
not registered identically to your Fund Account. The Fund and its agents shall
not be liable for reliance on phone instructions reasonably believed to be
genuine. The Fund will maintain procedures designed to authenticate telephone
instructions received.

Telephone  requests  for  redemptions  or exchanges  will not be honored  unless
signature appears below.

(X)________________________________________________________
Signature                                              Date
- --------------------------------------------------------------------------------

(6) WIRING INSTRUCTIONS -- The instructions provided below may only be changed
by written notification. Please check appropriate box(es):

|_| Wire redemption proceeds
|_| Wire distribution proceeds (please complete box 7 below)


____________________________________________________   _________________________
      Name of Commercial Bank (Net Savings Bank)           Bank Account No.


________________________________________________________________________________
                Name(s) in which your Bank Account is Established


________________________________________________________________________________
                              Bank's Street Address


____________________________________________________   _________________________
  City                  State               Zip            Routing/ABA  Number

- --------------------------------------------------------------------------------

(7)  DISTRIBUTION OPTION -- Income dividends and capital gains distributions (if
     any) will be reinvested in additional shares if no box is checked below.
     The instructions provided below may only be changed by written
     notification.

     |_|  Income dividends and capital gains to be paid in cash.

     |_|  Income dividends to be paid in cash and capital gains distribution in
          additional shares.

     |_|  Income dividends and capital gains to be reinvested in additional
          shares.

     If cash option is chosen, please indicate instructions below:

     |_|  Mail distribution check to the name and address in which account is
          registered.

     |_|  Wire distribution to the same commercial bank indicated in Section 6
          above.
- --------------------------------------------------------------------------------

(8)  WIRING INSTRUCTIONS

For purchasing Shares by wire, please send a Fedwire payment to:

The Chase Manhattan Bank
1 Chase Manhattan Plaza
New York, NY 10081
ABA# 021000021
DDA# 910-2-734143
Attn: MAS Funds
Subscription Account
Ref. (Portfolio name, your Account number, your Account name)
- --------------------------------------------------------------------------------

SIGNATURE(S) OF ALL HOLDERS AND TAXPAYER CERTIFICATION

The undersigned certify that I/we have full authority and legal capacity to
purchase shares of the Fund and affirm that I/we have received a current MAS
Funds Prospectus and agree to be bound by its terms. Under penalties of perjury
I/we certify that the information provided in Section 4 above is true, correct
and complete. The Internal Revenue Service does not require your consent to any
provision of this document other than the certifications required to avoid
backup withholding.

(X)_________________________________________________
Signature                                       Date

(X)_________________________________________________
Signature                                       Date

(X)_________________________________________________
Signature                                       Date

(X)_________________________________________________
Signature                                       Date

                This application is separate from the prospectus.

- --------------------------------------------------------------------------------
                             FOR INTERNAL USE ONLY

              (X)_________________________________________________
                 Signature                                    Date

               _________________________________________________

                  O |__|       F |__|    OR |__|       S |__|
- --------------------------------------------------------------------------------

MILLER
ANDERSON
& SHERRERD, LLP    ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185
- --------------------------------------------------------------------------------
                                                                 SIDE TWO OF TWO

<PAGE>

   
                          MAS ADVISER CLASS PROSPECTUS

                                January 31, 1998

     Investment Adviser and Adminstrator:    Transfer Agent:

     Miller Anderson & Sherrerd, LLP         Chase Global Fund Services Company
     One Tower Bridge                        73 Tremont Street
     West Conshohocken                       Boston, Massachusetts 02108-0913
     Pennsylvania 19428-2899

                           General Distribution Agent:

                           MAS Fund Distribution, Inc.
                           One Tower Bridge
                           P.O. Box 868
                           West Conshohocken,
                           Pennsylvania 19428-0868

                                Table of Contents
                                                              Page
              Fund Expenses ..................................   2
              Prospectus Summary .............................   4
              Financial Highlights ...........................   6
              Yield and Total Return .........................   9
              Suitability ....................................   9
              Investment Limitations .........................  11
              Portfolio Summaries ............................  12
              Equity Investments .............................  12
              Fixed-Income Investments .......................  12
              Propectus Glossary 
                 Strategies ..................................  22
                 Investments .................................  27
              General Shareholder Information
                 Purchase of Shares ..........................  40
                 Redemption of Shares ........................  41
                 Shareholder Services ........................  43
                 Valuation of Shares .........................  44
                 Dividends, Distributions and Taxes ..........  45
              Investment Adviser .............................  47
              Portfolio Management ...........................  48
              Administrative Services ........................  50
              General Distribution Agent .....................  50
              Portfolio Transactions .........................  51
              Other Information ..............................  51
              Trustees and Officers ..........................  52
    

- --------------------------------------------------------------------------------
MAS Fund - 56         Terms in bold type are defined in the Prospectus Glossary



<PAGE>



- --------------------------------------------------------------------------------
                                       MAS
                                    ---------
                                    MAS FUNDS









                                   ---------------------------------------------
                                                                      PROSPECTUS

                                   ---------------------------------------------















                                   MILLER
                                   ANDERSON
                                   & SHERRERD, LLP


                                   ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 
                                   19428 o 800-354-8185
- --------------------------------------------------------------------------------
<PAGE>

<PAGE>

   
- --------------------------------------------------------------------------------
[MAS LOGO]                                        ADVISORY PORTFOLIOS PROSPECTUS
MAS FUNDS

                                January 31, 1998
    

- --------------------------------------------------------------------------------
Client Services: 1-800-354-8185    Prices and Investment Results: 1-800-522-1525
- --------------------------------------------------------------------------------

   
MAS Funds (the Fund) is a no-load mutual fund consisting of twenty-seven
portfolios, two of which are described in this Prospectus. The Advisory Foreign
Fixed Income and Advisory Mortgage Portfolios are available only to private
advisory clients of Miller Anderson & Sherrerd, LLP (the "Adviser"), investment
adviser to MAS Funds.

- --------------------------------------------------------------------------------

                            PORTFOLIO PAGE REFERENCE

                        How to Use This Prospectus:    3

                        Portfolio Summaries:
                        Advisory Foreign Fixed Income 10
                        Advisory Mortgage             11

                        Prospectus Glossary:
                        Strategies                    12
                        Investments                   14

                        General Shareholder
                        Information:                  25

                        Table of Contents             33

- --------------------------------------------------------------------------------
This Prospectus, which should be retained for future reference, sets forth
concisely information that you should know before you invest. A Statement of
Additional Information containing additional information about the Fund has been
filed with the Securities and Exchange Commission. Such Statement is dated
January 31, 1998 as revised from time to time, and has been incorporated by
reference into this Prospectus. A copy of the Statement may be obtained, without
charge, by writing to the Fund or by calling the Client Services Group at the
telephone number shown above.
- --------------------------------------------------------------------------------

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

Miller
Anderson
& Sherrerd, LLP
               ONE TOWER BRIDGE - WEST CONSHOHOCKEN, PA 19428 - 800-354-8185
- --------------------------------------------------------------------------------
<PAGE>

   
EXPENSE SUMMARY

The following tables illustrate the various expenses and fees that a shareholder
in a portfolio will incur either directly or indirectly. The Adviser may from
time to time waive fees or reimburse expenses thereby reducing total operating
expenses.

             Shareholder Transaction Expenses:
             Sales Load Imposed on Purchases                   None
             Sales Load Imposed on Reinvested Dividends        None
             Redemption Fees                                   None
             Exchange Fees                                     None

             Annual Fund Operating Expenses:
             (as a percentage of average net assets after fee waivers)
             12b-1 Fees                                        None
             Shareholder Servicing Fee                         None

                                   Investment                    Total
                                    Advisory       Other       Operating
          Portfolio                   Fees        Expenses      Expenses
- --------------------------------------------------------------------------------
Advisory Foreign Fixed Income        0.000%*       0.150%        0.150%
Advisory Mortgage                    0.000*        0.080         0.080

 The Total Operating Expense ratios reflected in the table above may be higher
 than the ratio of expenses actually deducted from portfolio assets because of
 the effect of expense offset arrangements. The result of such arrangements is
 to offset expenses that otherwise would be deducted from portfolio assets.
 Expenses in the above table have been restated to reflect current expenses.
*Until further notice, the Adviser has voluntarily agreed to waive its advisory
 fees and/or reimburse certain expenses to the extent necessary to keep Total
 Operating Expenses actually deducted from portfolio assets for the Advisory
 Foreign Fixed Income and Advisory Mortgage Portfolios from exceeding 0.150% and
 0.08%, respectively. Absent such waivers and/or reimbursements by the Adviser,
 Total Operating Expenses would be 0.561% and 0.464% for the Advisory Foreign
 Fixed Income and Advisory Mortgage Portfolios, respectively.
    


- --------------------------------------------------------------------------------
MAS Fund - 2           Terms in bold type are defined in the Prospectus Glossary
<PAGE>

EXAMPLE

   
The purpose of this table is to assist in understanding the various expenses
that a shareholder in a portfolio will bear directly or indirectly. The
following example illustrates the expenses that an investor would pay on a
$1,000 investment over various time periods assuming (1) a 5% annual rate of
return, and (2) redemption at the end of each time period. The example should
not be considered a representation of past or future expenses and actual
expenses may be greater or less than those shown.
    
   
          Portfolio                 1 year      3 year      5 year     10 year
- --------------------------------------------------------------------------------
Advisory Foreign Fixed Income         $2          $5          $8         $19
Advisory Mortgage                      1           3           5          10

- --------------------------------------------------------------------------------
    
                           HOW TO USE THIS PROSPECTUS

   
A PROSPECTUS SUMMARY begins on page 4;

FINANCIAL HIGHLIGHTS and a description of YIELD AND TOTAL RETURN begin on page
6;

GENERAL INFORMATION including INVESTMENT LIMITATIONS pertinent to all portfolios
begins on page 7;

SUMMARY PAGES for each portfolio's Objective, Policies and Strategies begin on
page 10;

The PROSPECTUS GLOSSARY which defines specific Allowable Investments, Policies
and Strategies printed in bold type throughout this Prospectus begins on page
12; and

GENERAL SHAREHOLDER INFORMATION begins on page 25
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 3
<PAGE>

   
SUMMARY INFORMATION:

The following information relates to each portfolio of the Fund and should be
read in conjunction with the specific information about each portfolio.

Objectives: Each portfolio seeks to achieve its investment objective relative to
the universe of securities in which it is authorized to invest and, accordingly,
the total return or current income achieved by a portfolio may not be as great
as that achieved by another portfolio that can invest in a broader range of
securities. Fixed-income portfolios will seek to produce total return by
actively trading portfolio securities. The objective of each portfolio is
fundamental and may only be changed with approval of holders of a majority of
the shares of each portfolio. The achievement of any portfolio's objective
cannot be assured.

The Advisory Foreign Fixed Income Portfolio is Non-Diversified for purposes of
the Investment Company Act of 1940 (the "1940 Act") meaning that it may invest a
greater percentage of assets in the securities of one issuer than other
portfolios. The Advisory Mortgage Portfolio is diversified.

RISK FACTORS: Prospective investors in the Fund should consider the following
factors as they apply to each portfolio's allowable investments and policies.
See the Prospectus Glossary for more information on terms printed in bold type:
    

o  Each portfolio may invest in Repurchase Agreements, which entail a risk of
   loss should the seller default in its obligation to repurchase the security
   which is the subject of the transaction; 

o  Each portfolio may participate in a Securities Lending program which entails
   a risk of loss should a borrower fail financially;

   
o  Fixed-Income Securities will be affected by general changes in interest rates
   resulting in increases or decreases in the value of the obligations held by a
   portfolio. The value of fixed-income securities can be expected to vary
   inversely to changes in prevailing interest rates, i.e., as interest rates
   decline, market value tends to increase and vice versa. Certain Fixed Income
   Securities may be highly sensitive to interest rate changes, and highly
   sensitive to the rate of principal payments (including prepayments on
   underlying mortgage assets). Investments in securities rated below investment
   grade, generally referred to as High Yield, high risk or junk bonds, carry a
   high degree of credit risk and are considered speculative by the major rating
   agencies; 

o  Investments in foreign securities involve certain special considerations
   which are not typically associated with investing in U.S. companies.
   Portfolios investing in foreign securities may also engage in foreign
   currency exchange transactions. See Forwards, Futures & Options, and Swaps;

o  Securities purchased on a When-Issued basis may decline or appreciate in
   market value prior to their actual delivery to the portfolio; 
    


- --------------------------------------------------------------------------------
MAS Fund - 4           Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
o  Each portfolio may invest a portion of its assets in Derivatives including
   Futures & Options. Futures contracts, options and options on futures
   contracts entail certain costs and risks, including imperfect correlation
   between the value of the securities held by the portfolio and the value of
   the particular derivative instrument, and the risk that a portfolio could not
   close out a futures or options position when it would be most advantageous to
   do so; and
  
o  Each portfolio may invest in certain instruments such as Forwards, certain
   types of Futures & Options, certain types of Mortgage Securities and
   When-Issued Securities which require the portfolio to segregate some or all
   of its cash or liquid securities to cover its obligations pursuant to such
   instruments. As asset segregation reaches certain levels, a portfolio may
   lose flexibility in managing its investments properly, responding to
   shareholder redemption requests, or meeting other obligations and may be
   forced to sell other securities that it wanted to retain or to realize
   unintended gains or losses. 

HOW TO INVEST: Shares of each portfolio are offered directly to investors
without a sales commission at the net asset value of the portfolio next
determined after receipt of the order. Investment is available only to advisory
clients of MAS.

HOW TO REDEEM: Shares of each portfolio may be redeemed at any time at the net
asset value of the portfolio next determined after receipt of the redemption
request. The redemption price may be more or less than the purchase price. See
Redemption of Shares and Shareholder Services.

THE FUND'S INVESTMENT ADVISER: Miller Anderson & Sherrerd, LLP (the "Adviser")
is a Pennsylvania limited liability partnership founded in 1969, wholly owned by
indirect subsidiaries of Morgan Stanley, Dean Witter, Discover and Co., and is
located at One Tower Bridge, West Conshohocken, PA 19428. The Adviser provides
investment counseling services to employee benefit plans, endowments,
foundations and other institutional investors, and as of December 31, 1997 had
in excess of $58.1 billion in assets under management. 
    

THE FUND'S DISTRIBUTOR: MAS Fund Distribution, Inc. (the "Distributor") provides
distribution services to the Fund.


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 5
<PAGE>

   
             Financial Highlights - Fiscal Years Ended September 30

                 Selected per share data and ratios for a share
                       outstanding throughout each period

  The following information should be read in conjunction with the portfolios'
  financial statements which are included in the Annual Report to Shareholders
    incorporated by reference to the Statement of Additional Information. The
     portfolios' financial statements for the year ended September 30, 1997
        have been examined by Price Waterhouse LLP whose opinion thereon
        (which was unqualified) is also incorporated by reference in the
                      Statement of Additional Information.

<TABLE>
<CAPTION>
                                Net Gains                 Dividend
         Net Asset              or Losses               Distributions  Capital Gain                
           Value-     Net     on Securities  Total from     (net      Distributions                
         Beginning Investment (realized and  Investment   Investment  (realized net     Other      
         of Period   Income    unrealized)   Activities    Income)    capital gains) Distributions 
- -------------------------------------------------------------------------------------------------------
Advisory Foreign Fixed Income Portfolio (Commencement of Operations 10/7/94)
<S>       <C>        <C>         <C>           <C>        <C>            <C>           <C>         
1997+++   $11.73     $0.58       $0.80         $1.38      ($1.88)        ($0.88)       ($0.03)#    
1996       10.80      0.68        1.02          1.70      (0.66)          (0.11)           --      
1995       10.00      0.74        0.44          1.18      (0.38)             --            --      

Advisory Mortgage Portfolio (Commencement of Operations 4/12/95)
1997      $10.29     $0.75       $0.34         $1.09     ($0.71)         ($0.08)           --      
1996       10.41      0.72       (0.06)         0.66      (0.72)          (0.03)       ($0.03)#    
1995       10.00      0.25        0.35          0.60      (0.19)             --            --      
</TABLE>
<TABLE>
<CAPTION>
         
                       Net Asset         Net Assets-  Ratio of    Ratio of
                        Value-              End of    Expenses    Net Income  Portfolio
             Total      End of   Total      Period   to Average   to Average   Turnover
         Distributions  Period  Return** (thousands) Net Assets+  Net Assets     Rate
- --------------------------------------------------------------------------------------------
Advisory Foreign Fixed Income Portfolio (Commencement of Operations 10/7/94)
<S>       <C>          <C>      <C>        <C>        <C>           <C>         <C> 
1997+++   ($2.79)      $10.32   14.08%     $93,939    0.14%++       5.68%       208%
1996       (0.77)       11.73   16.47      236,092    0.12++        6.06        170
1995       (0.38)       10.80   12.12      537,133    0.16*++       7.44*        96

Advisory Mortgage Portfolio (Commencement of Operations 4/12/95)
1997      ($0.79)      $10.59   11.03%  $3,071,427    0.09%++       7.55%       144%
1996       (0.78)       10.29    6.56    1,974,592    0.09++        7.17        139
1995       (0.19)       10.41    6.03    1,443,038    0.10*++       6.72*       110
</TABLE>

*  Annualized
** Total return figures for partial years are not annualized. 
#  Represents distribution in excess of net realized gains.
+  For the periods ended September 30, 1995, September 30, 1996 and September
   30, 1997, the Ratio of Expenses to Average Net Assets for the Advisory
   Foreign Fixed Income and Advisory Mortgage Portfolios excludes the effect of
   expense offsets. If expense offsets were included, the Ratio of Expenses to
   Average Net Assets would be 0.15%* and 0.08%*, respectively, for 1995, 0.12%
   and 0.08%, respectively, for 1996, and 0.14% and 0.08%, respectively, for
   1997.
++ The Adviser has voluntarily agreed to waive its advisory fees and/or
   reimburse certain expenses to the extent necessary in order to keep the Total
   Operating Expenses actually deducted from portfolio assets for the Advisory
   Foreign Fixed Income and Advisory Mortgage Portfolios from exceeding 0.15%
   and 0.08%, respectively. Voluntarily waived and/or reimbursed expenses
   totaled 0.38%* and 0.49%*, respectively, for the period ended September 30,
   1995, 0.38% and 0.39%, respectively, for the year ended September 30, 1996,
   and 0.38% and 0.40%, respectively, for the year ended September 30, 1997.
+++Per share amounts for the year ended September 30, 1997, are based on
   average shares outstanding.
    


- --------------------------------------------------------------------------------
MAS Fund - 6           Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
YIELD AND TOTAL RETURN:

From time to time each portfolio of the Fund advertises its yield and total
return. Both yield and total return figures are based on historical earnings and
are not intended to indicate future performance. The average annual total return
reflects changes in the price of a portfolio's shares and assumes that any
income dividends and/or capital gain distributions made by the portfolio during
the period were reinvested in additional shares of the portfolio. Figures will
be given for one-, five- and ten-year periods ending with the most recent
calendar quarter-end (if applicable), and may be given for other periods as well
(such as from commencement of the portfolio's operations).

The yield of a portfolio is computed by dividing the net investment income per
share (using the average number of shares entitled to receive dividends) earned
during a 30-day period by the closing price per share on the last day of the
period. For the purpose of determining net investment income, the calculation
includes as expenses of the portfolio all recurring fees and any non recurring
charges for the period stated.

The performance of a portfolio may be compared to data prepared by independent
services which monitor the performance of investment companies, data reported in
financial and industry publications, returns of other investment advisers and
mutual funds, and various indices as further described in the Statement of
Additional Information. The Annual Report to Shareholders of the Fund for the
Fund's most recent fiscal year-end contains additional performance information
that includes comparisons with appropriate indices. The Annual Report is
available without charge upon request by writing to the Fund or calling the
Client Services Group at the telephone number shown on the front cover of this
Prospectus.

GENERAL INFORMATION

Suitability: The portfolios are designed for advisory clients of MAS who are
investing in the Fund as part of a larger investment and who, as long-term
investors, can accept the risks entailed in investing in the bond markets.
    

Securities Lending: Each portfolio may lend its securities to qualified brokers,
dealers, banks and other financial institutions for the purpose of realizing
additional income. Loans of securities will be collateralized by cash, letters
of credit, or securities issued or guaranteed by the U.S. Government or its
agencies. The collateral will equal at least 100% of the current market value of
the loaned securities. In addition, a portfolio will not loan its portfolio
securities to the extent that greater than one-third of its total assets, at
fair market value, would be committed to loans at that time.

   
Illiquid Securities/Restricted Securities: Each of the portfolios may invest up
to 15% of its net assets in securities that are illiquid by virtue of the
absence of a readily available market, or because of legal or contractual
restrictions on resale. This policy does not limit the acquisition of (i)
restricted securities eligible for resale to qualified institutional buyers
pursuant to Rule 144A under the Securities Act of 1933 or (ii) commercial paper
issued pursuant to Section 4(2) under the Securities Act of 1933, that are
determined to be liquid in accordance with guidelines established by the Fund's
Board of Trustees. 
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 7
<PAGE>

   
Turnover: The Adviser manages the portfolios generally without regard to
restrictions on annual turnover. In general, the portfolios will not trade for
short-term profits, but when circumstances warrant, investments may be sold
without regard to the length of time held.

Each portfolio has an annual turnover rate of 100% or more. These high rates of
annual turnover necessarily result in correspondingly heavier brokerage and
portfolio trading costs which are paid by a portfolio. Trading in Fixed-Income
Securities does not generally involve the payment of brokerage commissions, but
does involve indirect transaction costs. In addition to portfolio trading costs,
higher rates of annual turnover may result in the realization of capital gains.
To the extent net short-term capital gains are realized, any distributions
resulting from such gains are considered ordinary income for federal income tax
purposes. The annual turnover rate for each portfolio is shown in the Financial
Highlights.

Cash Equivalents/Temporary Defensive Investing: Although each portfolio intends
to remain substantially fully invested, a small percentage of a portfolio's
assets is generally held in the form of Cash Equivalents in order to meet
redemption requests and otherwise manage the daily affairs of each portfolio. In
addition, any portfolio may, when the Adviser deems that market conditions are
such that a temporary defensive approach is desirable, invest in Cash
Equivalents or the Fixed-Income Securities listed for that portfolio without
limit. In addition, the Adviser may, for temporary defensive purposes, increase
or decrease the average weighted maturity or duration of either portfolio
without regard to that portfolio's usual average weighted maturity.
    

Concentration: Concentration is defined as investment of 25% or more of a
portfolio's total assets in the securities of issuers operating in any one
industry. Except as provided in a portfolio's specific investment policies, or
as detailed in Investment Limitations, a portfolio will not concentrate
investments in any one industry.

   
Investment Limitations: Each portfolio is subject to certain limitations
designed to reduce its exposure to specific situations. Some of these
limitations are:

(a) with respect to 75% of its assets, a portfolio will not purchase securities
of any issuer if, as a result, more than 5% of the portfolio's total assets
taken at market value would be invested in the securities of any single issuer
except that this restriction does not apply to securities issued or guaranteed
by the U.S. Government or its agencies or instrumentalities. This limitation is
not applicable to the Advisory Foreign Fixed Income Portfolio. However, this
portfolio will comply with the diversification requirements imposed by
Sub-Chapter M of the Internal Revenue Code and;

(b) with respect to 75% of its assets, a portfolio will not purchase a security
if, as a result, the portfolio would hold more than 10% of the outstanding
voting securities of any issuer. This limitation is not applicable to the
Advisory Foreign Fixed Income Portfolio. However, this portfolio will comply
with the diversification requirements imposed by Sub-Chapter M of the Internal
Revenue Code.
    


- --------------------------------------------------------------------------------
MAS Fund - 8           Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Limitations (a) and (b), and certain other limitations described in the
Statement of Additional Information are fundamental and may be changed only with
the approval of the holders of a majority of the shares of the portfolios. Other
investment limitations described here and in the Statement of Additional
Information are not fundamental policies; meaning that the Board of Trustees may
change them without shareholder approval. If a percentage limitation on
investment or utilization of assets as set forth in this prospectus or the
Statement of Additional Information is adhered to at the time an investment is
made, a later change in percentage resulting from changes in the value or total
cost of the portfolios' assets will not be considered a violation of the
restriction, and the sale of securities will not be required.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary           MAS Fund - 9
<PAGE>

   
Advisory Foreign Fixed Income Portfolio
(a non-diversified portfolio available only to advisory clients of MAS)

Objective:                To achieve above-average total return over a market
                          cycle of three to five years, consistent with
                          reasonable risk, by investing primarily in investment
                          grade fixed-income securities of foreign issuers.

Approach:                 The portfolio is available only to the Adviser's 
                          private advisory clients

Policies:                 Generally at least 65% invested in Fixed-Income
                          Securities of issuers in at least 3 countries located
                          outside of the U.S.

                          Derivatives may be used to represent country 
                          investments, or otherwise pursue portfolio strategy. 
                          May invest all or a portion of assets in U.S. 
                          securities as a defensive strategy.

Quality                   100% Fixed Income Securities that are Rated A or 
Specifications:           higher (or its equivalent)

Maturity and Duration:    Average weighted maturity generally greater than 5 
                          years.

Allowable                 Agencies               Eastern European Issuers  
Investments:              Asset-Backeds          Floaters                  
                          Brady Bonds            Foreign Bonds             
                          Cash Equivalents       Foreign Currency          
                          CMOs                   Forwards                  
                          Convertibles           Futures & Options         
                          Corporates             Inverse Floaters          

                          Investment Companies   Swaps                 
                          Mortgage Securities    U.S. Governments     
                          Municipals             When Issued Securities
                          Preferred Stock        Yankees               
                          Repurchase Agreements  Zero Coupons          
                          SMBS                                         
                          Structured Notes                             

Benchmark Index:          Salomon Broad Investment Grade

Strategies:               Foreign Investing
                          Foreign Fixed Income Investing
                          Maturity and Duration Management
                          Value Investing
                          Non-Diversified Status
                          Mortgage Investing

Portfolio
Management Team:          J. David Germany and Richard B. Worley
    


- --------------------------------------------------------------------------------
MAS Fund - 10          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Advisory Mortgage Portfolio
(available only to advisory clients of MAS)

Objective:                To achieve returns consistent with returns generated
                          by the market for mortgage securities by investing
                          primarily (at least 65% of its assets under normal
                          circumstances) in mortgage securities.

Approach:                 The portfolio is available only to the Adviser's
                          private advisory clients

Policies:                 Generally at least 65% invested in Mortgage Securities
                          Derivatives may be used to pursue portfolio strategy.

Quality
Specifications:           100% Investment Grade Securities

Maturity and Duration:    Average weighted maturity generally greater than 
                          7 years. Duration generally between 2 and 7 years.

Allowable                 Agencies                Floaters              
Investments:              Asset-Backeds           Futures & Options     
                          Cash Equivalents        Inverse Floaters      
                          CMOs                    Investment Companies  
                                                                    

                          Mortgage Securities     Swaps                 
                          Repurchase Agreements   U.S. Governments      
                          SMBS                    When Issued Securities
                          Structured Notes        Yankees               
                                                  Zero Coupons          

Benchmark Index:          Lehman Mortgage Index

Strategies:               Mortgage Investing
                          Maturity and Duration Management
                          Value Investing

Portfolio
Management Team:          Kenneth B. Dunn and Scott F. Richard
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 11
<PAGE>

   
                              PROSPECTUS GLOSSARY
    

            CHARACTERISTICS AND RISKS OF STRATEGIES AND INVESTMENTS

STRATEGIES

       
Foreign Fixed Income Investing: The Adviser invests in Foreign Bonds and other
Fixed-Income Securities denominated in foreign currencies, where, in the opinion
of the Adviser, the combination of current yield and currency value offer
attractive expected returns. When the total return opportunities in a foreign
bond market appear attractive in local currency terms, but where in the
Adviser's judgment unacceptable currency risk exists, currency Futures &
Options, Forwards and Swaps may be used to hedge the currency risk.

   
Foreign Investing: Investors should recognize that investing in Foreign Bonds
involves certain special considerations which are not typically associated with
investing in domestic securities.

As non-U.S. companies are not generally subject to uniform accounting, auditing
and financial reporting standards and practices comparable to those applicable
to U.S. companies, there may be less publicly available information about
certain foreign securities than about U.S. securities. Foreign Bonds may be less
liquid and more volatile than securities of comparable U.S. companies. There is
generally less government supervision and regulation of stock exchanges, brokers
and listed companies than in the U.S. With respect to certain foreign countries,
there is the possibility of expropriation or confiscatory taxation, political or
social instability, or diplomatic developments which could affect U.S.
investments in those countries. Additionally, there may be difficulty in
obtaining and enforcing judgments against foreign issuers.

Since Foreign Bonds may be denominated in foreign currencies, and since a
portfolio may temporarily hold uninvested reserves in bank deposits of foreign
currencies prior to reinvestment or conversion to U.S. dollars, a portfolio may
be affected favorably or unfavorably by changes in currency rates and in
exchange control regulations, and may incur costs in connection with conversions
between various currencies.
    

       
Although a portfolio will endeavor to achieve the most favorable execution costs
in its portfolio transactions in foreign securities, fixed commissions on many
foreign stock exchanges are generally higher than negotiated commissions on U.S.
exchanges. In addition, it is expected that the expenses for custodial
arrangements of a portfolio's foreign securities will be greater than the
expenses for the custodial arrangements for handling U.S. securities of equal
value. Certain foreign governments levy withholding taxes against dividend and
interest income. Although in some countries a portion of these taxes is
recoverable, the non-recovered portion of foreign withholding taxes will reduce
the income a portfolio receives from the companies comprising the portfolio's
investments.


- --------------------------------------------------------------------------------
MAS Fund - 12          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Maturity and Duration Management: One of two primary components of the Adviser's
fixed-income investment strategy is maturity and duration management. The
maturity and duration structure of a portfolio investing in Fixed-Income
Securities is actively managed in anticipation of cyclical interest rate
changes. Adjustments are not made in an effort to capture short-term, day-to-day
movements in the market, but instead are implemented in anticipation of longer
term shifts in the levels of interest rates. Adjustments made to shorten
portfolio maturity and duration are made to limit capital losses during periods
when interest rates are expected to rise. Conversely, adjustments made to
lengthen maturity are intended to produce capital appreciation in periods when
interest rates are expected to fall. The foundation for maturity and duration
strategy lies in analysis of the U.S. and global economies, focusing on levels
of real interest rates, monetary and fiscal policy actions, and cyclical
indicators. See Value Investing for a description of the second primary
component of the Adviser's fixed-income strategy.

About Maturity and Duration: Most debt obligations provide interest (coupon)
payments in addition to a final (par) payment at maturity. Some obligations also
have call provisions. Depending on the relative magnitude of these payments and
the nature of the call provisions, the market values of debt obligations may
respond differently to changes in the level and structure of interest rates.
Traditionally, a debt security's term-to-maturity has been used as a proxy for
the sensitivity of the security's price to changes in interest rates (which is
the interest rate risk or volatility of the security). However, term-to-maturity
measures only the time until a debt security provides its final payment, taking
no account of the pattern of the security's payments prior to maturity.

Duration is a measure of the expected life of a Fixed-Income Security that was
developed as a more precise alternative to the concept of term-to-maturity.
Duration incorporates a bond's yield, coupon interest payments, final maturity
and call features into one measure. Duration is one of the fundamental tools
used by the Adviser in the selection of Fixed-Income Securities. Duration is a
measure of the expected life of a Fixed-income Security on a present value
basis. Duration takes the length of the time intervals between the present time
and the time that the interest and principal payments are scheduled or, in the
case of a callable bond, expected to be received, and weights them by the
present values of the cash to be received at each future point in time. For any
Fixed-income Security with interest payments occurring prior to the payment of
principal, duration is always less than maturity. In general, all other factors
being the same, the lower the stated or coupon rate of interest of a
Fixed-income Security, the longer the duration of the security; conversely, the
higher the stated or coupon rate of interest of a Fixed-income Security, the
shorter the duration of the security.

There are some situations where even the standard duration calculation does not
properly reflect the interest rate exposure of a security. For example, floating
and variable rate securities often have final maturities of ten or more years;
however, their interest rate exposure corresponds to the frequency of the coupon
reset. Another example where the interest rate exposure is not properly captured
by duration is the case of mortgage pass-through securities. The stated final
maturity of such securities is generally 30 years, but current prepayment rates
are more critical in determining the securities' interest rate exposure. In
these and other similar situations, the Adviser will use sophisticated
analytical techniques that incorporate the economic life of a security into the
determination of its interest rate exposure.
    
       


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 13
<PAGE>

   
Mortage Investing: The Advisory Mortgage Portfolio will be primarily (at least
65% of the time under normal circumstances) invested in mortgage-related
securities. These include Mortgage Securities which represent interests in pools
of mortgage loans made by lenders such as commercial banks, savings and loan
associations, mortgage bankers and others. The pools are assembled by various
organizations, including the Government National Mortgage Association (GNMA),
Federal Home Loan Mortgage Corporation (FHLMC), Fannie Mae, other government
agencies, and private issuers. It is expected that a portfolio's primary
emphasis will be in Mortgage Securities issued by the various government-related
organizations. However, a portfolio may invest, without limit, in Mortgage
Securities issued by private issuers when the Adviser deems that the quality of
the investment, the quality of the issuer, and market conditions warrant such
investments. Securities issued by private issuers will be rated investment grade
by Moody's or Standard & Poor's or be deemed by the Adviser to be of comparable
investment quality.

Non-Diversified Status: The Advisory Foreign Fixed Income Portfolio is
classified as a non-diversified investment company under the 1940.Act.
Non-diversified portfolios may invest more than 25% of assets in securities of
individual issuers representing greater than 5% each of a portfolio's total
assets, whereas diversified investment companies may only invest up to 25% of
assets in positions of greater than 5%. Both diversified and non-diversified
portfolios are subject to diversification specifications under the Internal
Revenue Code of 1986, as amended, which require that, as of the close of each
fiscal quarter, (i) no more than 25% of a portfolio's total assets may be
invested in the securities of a single issuer (except for U.S. Government
securities) and (ii) with respect to 50% of its total assets, no more than 5% of
such assets may be invested in the securities of a single issuer (except for
U.S. Government securities) or invested in more than 10% of the outstanding
voting securities of a single issuer. Because of its non-diversified status, a
portfolio may be subject to greater credit and other risks than a diversified
investment company.

Value Investing: One of two primary components of the Adviser's fixed-income
strategy is value investing, whereby the Adviser seeks to identify undervalued
sectors and securities through analysis of credit quality, option
characteristics and liquidity. Quantitative models are used in conjunction with
judgment and experience to evaluate and select securities with embedded put or
call options which are attractive on a risk- and option-adjusted basis.
Successful value investing will permit a portfolio to benefit from the price
appreciation of individual securities during periods when interest rates are
unchanged. See Maturity and Duration Management for a description of the other
key component of the Adviser's fixed-income investment strategy.
    
        
INVESTMENTS

   
Each portfolio may invest in the securities defined below in accordance with
their listing of Allowable Investments and any quality or policy constraints.

Agencies: are securities which are not guaranteed by the U.S. Government, but
which are issued, sponsored or guaranteed by a federal agency or federally
sponsored agency such as the Student Loan Marketing Association or any of
several other agencies.
    

Asset-Backeds: are securities collateralized by shorter term loans such as
automobile loans, home equity loans, computer leases, or credit card
receivables. The payments from the collateral are passed through to the security
holder. 


- --------------------------------------------------------------------------------
MAS Fund - 14          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

The collateral behind asset-backed securities tends to have prepayment
rates that do not vary with interest rates. In addition the short-term nature of
the loans reduces the impact of any change in prepayment level. Due to
amortization, the average life for these securities is also the conventional
proxy for maturity.

Possible Risks: Due to the possibility that prepayments (on automobile loans and
other collateral) will alter the cash flow on asset-backed securities, it is not
possible to determine in advance the actual final maturity date or average life.
Faster prepayment will shorten the average life and slower prepayments will
lengthen it. However, it is possible to determine what the range of that
movement could be and to calculate the effect that it will have on the price of
the security. In selecting these securities, the Adviser will look for those
securities that offer a higher yield to compensate for any variation in average
maturity.

   
Brady Bonds: are debt obligations which are created through the exchange of
existing commercial bank loans to foreign entities for new obligations in
connection with debt restructuring under a plan introduced by former U.S.
Secretary of the Treasury, Nicholas F. Brady (the Brady Plan). Brady Bonds have
been issued fairly recently, and, accordingly, do not have a long payment
history. They may be collateralized or uncollateralized and issued in various
currencies (although most are dollar-denominated) and they are actively traded
in the over-the-counter secondary market. For further information on these
securities, see the Statement of Additional Information. Portfolios will only
invest in Brady Bonds consistent with quality specifications.
    

Cash Equivalents: are short-term fixed-income instruments comprising:

(1) Time deposits, certificates of deposit (including marketable variable rate
certificates of deposit) and bankers' acceptances issued by a commercial bank or
savings and loan association. Time deposits are non-negotiable deposits
maintained in a banking institution for a specified period of time at a stated
interest rate. Certificates of deposit are negotiable short-term obligations
issued by commercial banks or savings and loan associations against funds
deposited in the issuing institution. Variable rate certificates of deposit are
certificates of deposit on which the interest rate is periodically adjusted
prior to their stated maturity based upon a specified market rate. A bankers'
acceptance is a time draft drawn on a commercial bank by a borrower usually in
connection with an international commercial transaction (to finance the import,
export, transfer or storage of goods).

   
Each portfolio may invest in obligations of U.S. banks, foreign branches of U.S.
banks (Eurodollars), and U.S. branches of foreign banks (Yankee dollars). Euro
and Yankee dollar investments will involve some of the same risks of investing
in international securities that are discussed in the Foreign Investing section
of this Prospectus.

The portfolios will not invest in any security issued by a commercial bank
unless (i) the bank has total assets of at least $1 billion, or the equivalent
in other currencies, or, in the case of domestic banks which do not have total
assets of at least $1 billion, the aggregate investment made in any one such
bank is limited to $100,000 and the principal amount of such investment is
insured in full by the Federal Deposit Insurance Corporation, (ii) in the case
of U.S. banks, it is a member of the Federal Deposit Insurance Corporation, and
(iii) in the case of foreign branches of U.S. banks, the security is deemed by
the Adviser to be of an investment quality comparable with other debt securities
which may be purchased by the portfolio;
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 15
<PAGE>

   
(2) Each portfolio may invest in commercial paper rated at time of purchase by
one or more Nationally Recognized Statistical Rating Organizations ("NRSRO") in
one of their two highest categories, (e.g., A-l or A-2 by Standard & Poor's or
Prime 1 or Prime 2 by Moody's), or, if not rated, issued by a corporation having
an outstanding unsecured debt issue rated high-grade by a NRSRO (e.g. A or
better by Moody's, Standard & Poor's or Fitch);
    

(3) Short-term corporate obligations rated high-grade at the time of purchase by
a NRSRO (e.g. A or better by Moody's, Standard & Poor's or Fitch);

(4) U.S. Government obligations including bills, notes, bonds and other debt
securities issued by the U.S. Treasury. These are direct obligations of the U.S.
Government and differ mainly in interest rates, maturities and dates of issue;

   
(5) Government Agency securities issued or guaranteed by U.S. Government
sponsored instrumentalities and Federal agencies. These include securities
issued by the Federal Home Loan Banks, Federal Land Bank, Farmers Home
Administration, Farm Credit Banks, Federal Intermediate Credit Bank, Fannie Mae,
Federal Financing Bank, the Tennessee Valley Authority, and others; and

(6) Repurchase Agreements collateralized by securities listed above.
    

CMOs--Collateralized Mortgage Obligations: are Derivatives which are
collateralized by mortgage pass-through securities. Cash flows from the mortgage
pass-through securities are allocated to various tranches (a "tranche" is
essentially a separate security) in a predetermined, specified order. Each
tranche has a stated maturity - the latest date by which the tranche can be
completely repaid, assuming no prepayments - and has an average life - the
average of the time to receipt of a principal payment weighted by the size of
the principal payment. The average life is typically used as a proxy for
maturity because the debt is amortized (repaid a portion at a time), rather than
being paid off entirely at maturity, as would be the case in a straight debt
instrument.

   
Possible Risks: Due to the possibility that prepayments (on home mortgages and
other collateral) will alter the cash flow on CMOs, it is not possible to
determine in advance the actual final maturity date or average life. Faster
prepayment will shorten the average life and slower prepayments will lengthen
it. However, it is possible to determine what the range of that movement could
be and to calculate the effect that it will have on the price of the security.
In selecting these securities, the Adviser will look for those securities that
offer a higher yield to compensate for any variation in average maturity.

Like bonds in general, Mortgage Securities will generally decline in price when
interest rates rise. Rising interest rates also tend to discourage refinancings
of home mortgages with the result that the average life of Mortgage Securities
held by a portfolio may be lengthened. This extension of average life causes the
market price of the securities to decrease further than if their average lives
were fixed. In part to compensate for these risks, mortgages will generally
offer higher yields than comparable bonds. However, when interest rates fall,
mortgages may not enjoy as large a gain in market value due to prepayment risk
because additional mortgage prepayments must be reinvested at lower interest
rates. 
    


- --------------------------------------------------------------------------------
MAS Fund - 16          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Convertibles: are convertible bonds or shares of convertible Preferred
Stock which may be exchanged for a fixed number of shares of Common Stock at the
purchaser's option.
    

Corporates--Corporate bonds: are debt instruments issued by private
corporations. Bondholders, as creditors, have a prior legal claim over common
and preferred stockholders of the corporation as to both income and assets for
the principal and interest due to the bondholder. A portfolio will buy
Corporates subject to any quality constraints. If a security held by a portfolio
is down-graded, the portfolio may retain the security if the Adviser deems
retention of the security to be in the best interests of the portfolio.

   
Derivatives: A financial instrument whose value and performance are based on the
value and performance of another security or financial instrument. The Adviser
will use derivatives only in circumstances where they offer the most economic
means of improving the risk/reward profile of the portfolio. The Adviser will
not use derivatives to increase portfolio risk above the level that could be
achieved in the portfolio using only traditional investment securities. In
addition, the Adviser will not use derivatives to acquire exposure to changes in
the value of assets or indexes of assets that are not listed in the applicable
Allowable Investments for the portfolio. Any applicable limitations are
described under each investment definition. The portfolios may enter into
over-the-counter Derivatives transactions with counterparties approved by the
Adviser in accordance with guidelines established by the Board of Trustees.
These guidelines provide for a minimum credit rating for each counterparty and
various credit enhancement techniques (for example, collateralization of amounts
due from counterparties) to limit exposure to counterparties with ratings below
AA. Derivatives include, but are not limited to, CMOs, Forwards, Futures and
Options, SMBS, Structured Investments, Structured Notes and Swaps. See each
individual portfolio's listing of Allowable Investments to determine which of
these a portfolio may hold.

Eastern European Issuers: The economies of Eastern European countries are
currently suffering both from the stagnation resulting from centralized economic
planning and control and the higher prices and unemployment associated with the
transition to market economics. Unstable economic and political conditions may
adversely affect security values. Upon the accession to power of Communist
regimes during the 1940's, the governments of a number of Eastern European
countries expropriated a large amount of property. The claims of many property
owners against those governments were never finally settled. As a result, there
can be no assurance that the portfolio's investments in Eastern Europe would not
be expropriated, nationalized or otherwise confiscated.

Fixed-Income Securities: Commonly include but are not limited to U.S.
Governments, Zero Coupons, Agencies, Corporates, High Yield, Mortgage
Securities, SMBS, CMOs, Asset-Backeds, Convertibles, Brady Bonds, Floaters,
Inverse Floaters, Cash Equivalents, Repurchase Agreements, Preferred Stock, and
Foreign Bonds. See each individual portfolio's listing of Allowable Investments
to determine which of these a portfolio may hold.
    

Floaters--Floating and Variable Rate Obligations: are debt obligations with a
floating or variable rate of interest, i.e. the rate of interest varies with
changes in specified market rates or indices, such as the prime rate, or at
specified intervals. Certain floating or variable rate obligations may carry a
demand feature that permits the holder to tender them back to the issuer of the
underlying instrument, or to a third party, at par value prior to maturity. When
the demand feature of certain floating or variable rate obligations represents
an obligation of a foreign entity, the demand feature will be subject to certain
risks discussed under Foreign Investing. 


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 17
<PAGE>

   
Foreign Bonds: are Fixed Income Securities denominated in foreign currency and
issued and traded primarily outside of the U.S., including: (1) obligations
issued or guaranteed by foreign national governments, their agencies,
instrumentalities, or political subdivisions; (2) debt securities issued,
guaranteed or sponsored by supranational organizations established or supported
by several national governments, including the World Bank, the European
Community, the Asian Development Bank and others; (3) non-government foreign
corporate debt securities; and (4) foreign Mortgage Securities and various other
mortgages and asset-backed securities.

Foreign Currency: Portfolios investing in foreign securities will regularly
transact security purchases and sales in foreign currencies. These portfolios
may hold foreign currency or purchase or sell currencies on a forward basis (see
Forwards)

Forwards--Forward Foreign Currency Exchange Contracts: are Derivatives which are
used to protect against uncertainty in the level of future foreign exchange
rates. A forward foreign currency exchange contract is an obligation to purchase
or sell a specific currency at a future date, which may be any fixed number of
days from the date of the contract agreed upon by the parties, at a price set at
the time of the contract. Such contracts do not eliminate fluctuations caused by
changes in the local currency prices of the securities, but rather, they
establish an exchange rate at a future date. Also, although such contracts can
minimize the risk of loss due to a decline in the value of the hedged currency,
at the same time they limit any potential gain that might be realized.
    

A portfolio may use currency exchange contracts in the normal course of business
to lock in an exchange rate in connection with purchases and sales of securities
denominated in foreign currencies (transaction hedge) or to lock in the U.S.
dollar value of portfolio positions (position hedge). In addition, the
portfolios may cross hedge currencies by entering into a transaction to purchase
or sell one or more currencies that are expected to decline in value relative to
other currencies to which a portfolio has or expects to have portfolio exposure.
Portfolios may also engage in proxy hedging which is defined as entering into
positions in one currency to hedge investments denominated in another currency,
where the two currencies are economically linked. A portfolio's entry into
forward contracts, as well as any use of cross or proxy hedging techniques will
generally require the portfolio to hold liquid securities or cash equal to the
portfolio's obligations in a segregated account throughout the duration of the
contract.

A portfolio may also combine forward contracts with investments in securities
denominated in other currencies in order to achieve desired credit and currency
exposures. Such combinations are generally referred to as synthetic securities.
For example, in lieu of purchasing a foreign bond, a portfolio may purchase a
U.S. dollar-denominated security and at the same time enter into a forward
contract to exchange U.S. dollars for the contract's underlying currency at a
future date. By matching the amount of U.S. dollars to be exchanged with the
anticipated value of the U.S. dollar-denominated security, a portfolio may be
able to lock in the foreign currency value of the security and adopt a synthetic
investment position reflecting the credit quality of the U.S. dollar-denominated
security.

There is a risk in adopting a transaction hedge or position hedge to the extent
that the value of a security denominated in foreign currency is not exactly
matched with a portfolio's obligation under the forward contract. On the date of
maturity, a portfolio may be exposed to some risk of loss from fluctuations in
that currency. Although the Adviser will attempt to hold such mismatching to a
minimum, there can be no assurance that the Adviser will be able to do 


- --------------------------------------------------------------------------------
MAS Fund - 18          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

so. For proxy hedges, cross hedges or a synthetic position, there is an
additional risk in that these transactions create residual foreign currency
exposure. When a portfolio enters into a forward contract for purposes of
creating a position hedge, transaction hedge, cross hedge or a synthetic
security, it will generally be required to hold liquid securities or cash in a
segregated account with a daily value at least equal to its obligation under the
forward contract.

Futures & Options--Futures Contracts, Options on Futures Contracts and Options:
are Derivatives. Futures contracts provide for the sale by one party and
purchase by another party of a specified amount of a specific security, at a
specified future time and price. An option is a legal contract that gives the
holder the right to buy or sell a specified amount of the underlying security or
futures contract at a fixed or determinable price upon the exercise of the
option. A call option conveys the right to buy and a put option conveys the
right to sell a specified quantity of the underlying security.

   
A portfolio will not enter into futures contracts to the extent that its
outstanding obligations to purchase securities under these contracts in
combination with its outstanding obligations with respect to options
transactions would exceed 50% of its total assets. It will maintain assets
sufficient to meet its obligations under such contracts in a segregated account
with the custodian bank or will otherwise comply with the Securities and
Exchange Commission's ("SEC's") position on asset coverage.

Possible Risks: The primary risks associated with the use of Futures and Options
are (i) imperfect correlation between the change in market value of the
securities held by a portfolio and the prices of futures and options relating to
the stocks, bonds or futures contracts purchased or sold by a portfolio; and
(ii) possible lack of a liquid secondary market for a futures contract and the
resulting inability to close a futures position which could have an adverse
impact on a portfolio's ability to execute futures and options strategies.
Additional risks associated with options transactions are (i) the risk that an
option will expire worthless; (ii) the risk that the issuer of an over-the-
counter option will be unable to fulfill its obligation to the portfolio due to
bankruptcy or related circumstances; (iii) the risk that options may exhibit
greater short-term price volatility than the underlying security; and (iv) the
risk that a portfolio may be forced to forego participation in the appreciation
of the value of underlying securities, futures contracts or currency due to the
writing of a call option.

Inverse Floaters--Inverse Floating Rate Obligations: are Fixed-Income
Securities, which have coupon rates that vary inversely at a multiple of a
designated floating rate, such as LIBOR (London Inter-Bank Offered Rate). Any
rise in the reference rate of an Inverse Floater (as a consequence of an
increase in interest rates) causes a drop in the coupon rate while any drop in
the reference rate of an inverse floater causes an increase in the coupon rate.
Inverse Floaters may exhibit substantially greater price volatility than fixed
rate obligations having similar credit quality, redemption provisions and
maturity, and Inverse Floater CMOs exhibit greater price volatility than the
majority of mortgage pass-through securities or CMOs. In addition, some Inverse
Floater CMOs exhibit extreme sensitivity to changes in prepayments. As a result,
the yield to maturity of an Inverse Floater CMO is sensitive not only to changes
in interest rates but also to changes in prepayment rates on the related
underlying mortgage assets.

Investment Companies: The portfolios are permitted to invest in shares of other
open-end or closed-end investment companies. The 1940 Act generally prohibits
the portfolios from acquiring more than 3% of the outstanding voting 
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 19
<PAGE>

shares of an investment company and limits such investments to no more than 5%
of the portfolio's total assets in any one investment company and no more than
10% in any combination of investment companies. The 1940 Act also prohibits the
portfolios from acquiring in the aggregate more than 10% of the outstanding
voting shares of any registered closed-end investment company.

   
To the extent a portfolio invests a portion of its assets in Investment
Companies, those assets will be subject to the expenses of the investment
company as well as to the expenses of the portfolio itself. The portfolios may
not purchase shares of any affiliated investment company except as permitted by
SEC rule or order.

Investment Grade Securities: are those (a) rated by one or more nationally
recognized statistical rating organization (NRSRO) in one of the four highest
rating categories at the time of purchase (e.g. AAA, AA, A or BBB by Standard &
Poor's Corporation (Standard & Poor's) or Fitch Investors Service, Inc., (Fitch)
or Aaa, Aa, A or Baa by Moody's Investors Service, Inc. (Moody's)); (b)
guaranteed by the U.S. Government or a private organization; or (c) considered
by the Adviser to be investment grade quality. Securities rated BBB or Baa
represent the lowest of four levels of investment grade securities and are
regarded as borderline between definitely sound obligations and those in which
the speculative element begins to predominate. Mortgage Securities, including
mortgage pass-throughs and CMOs, deemed investment grade by the Adviser, will
either carry a guarantee from an agency of the U.S. Government or a private
issuer of the timely payment of principal and interest (such guarantees do not
extend to the market value of such securities or the net asset value per share
of the portfolio) or, in the case of unrated securities, be sufficiently
seasoned that they are considered by the Adviser to be investment grade quality.
The Adviser may retain securities if their ratings falls below investment grade
if it deems retention of the security to be in the best interests of the
portfolio. Any portfolio permitted to hold Investment Grade Securities may hold
unrated securities if the Adviser considers the risks involved in owning that
security to be equivalent to the risks involved in holding an Investment Grade
Security.

Mortgage Securities--Mortgage-backed securities represent an ownership interest
in a pool of residential and commercial mortgage loans. Generally, these
securities are designed to provide monthly payments of interest and principal to
the investor. The mortgagee's monthly payments to his/her lending institution
are passed through to investors such as the portfolio. Most issuers or poolers
provide guarantees of payments, regardless of whether the mortgagor actually
makes the payment. The guarantees made by issuers or poolers are supported by
various forms of credit, collateral, guarantees or insurance, including
individual loan, title, pool and hazard insurance purchased by the issuer. The
pools are assembled by various governmental, government-related and private
organizations. Portfolios may invest in securities issued or guaranteed by the
Government National Mortgage Association (GNMA), Federal Home Loan Mortgage
Corporation (FHLMC), Fannie Mae, private issuers and other government agencies.
There can be no assurance that the private insurers can meet their obligations
under the policies. Mortgage Securities issued by non-agency issuers, whether or
not such securities are subject to guarantees, may entail greater risk. If there
is no guarantee provided by the issuer, Mortgage Securities purchased by the
portfolio will be those which at time of purchase are rated investment grade by
one or more NRSRO, or, if unrated, are deemed by the Adviser to be of investment
grade quality.

There are two methods of trading Mortgage Securities. A specified pool
transaction is a trade in which the pool number of the security to be delivered
on the settlement date is known at the time the trade is made. This is in
contrast 
    


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MAS Fund - 20          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
with the typical mortgage security transaction, called a TBA (to be announced)
transaction, in which the type of Mortgage Securities to be delivered is
specified at the time of trade but the actual pool numbers of the securities
that will be delivered are not known at the time of the trade. The pool numbers
of the pools to be delivered at settlement will be announced shortly before
settlement takes place. The terms of the TBA trade may be made more specific if
desired. Generally, agency pass-through Mortgage Securities are traded on a TBA
basis.

A mortgage-backed bond is a collateralized debt security issued by a thrift or
financial institution. The bondholder has a first priority perfected security
interest in collateral, usually consisting of agency mortgage pass-through
securities, although other assets, including U.S. Treasuries (including Zero
Coupon U.S. Treasuries), agencies, cash equivalent securities, whole loans and
corporate bonds, may qualify. The amount of collateral must be continuously
maintained at levels from 115% to 150% of the principal amount of the bonds
issued, depending on the specific issue structure and collateral type.

Possible Risks: Due to the possibility that prepayments on home mortgages will
alter cash flow on Mortgage Securities, it is not possible to determine in
advance the actual final maturity date or average life. Like bonds in general,
mortgage-backed securities will generally decline in price when interest rates
rise. Rising interest rates also tend to discourage refinancings of home
mortgages, with the result that the average life of Mortgage Securities held by
a portfolio may be lengthened. This extension of average life causes the market
price of the securities to decrease further than if their average lives were
fixed. However, when interest rates fall, mortgages may not enjoy as large a
gain in market value due to prepayment risk because additional mortgage
prepayments must be reinvested at lower interest rates. Faster prepayment will
shorten the average life and slower prepayments will lengthen it. However, it is
possible to determine what the range of that movement could be and to calculate
the effect that it will have on the price of the security. In selecting these
securities, the Adviser will look for those securities that offer a higher yield
to compensate for any variation in average maturity.

Municipals--Municipal Securities: are debt obligations issued by local, state
and regional governments that provide interest income which is exempt from
federal income taxes. Municipals include both municipal bonds (those securities
with maturities of five years or more) and municipal notes (those with
maturities of less than five years). Municipal bonds are issued for a wide
variety of reasons: to construct public facilities, such as airports, highways,
bridges, schools, hospitals, mass transportation, streets, water and sewer
works; to obtain funds for operating expenses; to refund outstanding municipal
obligations; and to loan funds to various public institutions and facilities.
Certain industrial development bonds are also considered municipal bonds if
their interest is exempt from federal income tax. Industrial development bonds
are issued by or on behalf of public authorities to obtain funds for various
privately-operated manufacturing facilities, housing, sports arenas, convention
centers, airports, mass transportation systems and water, gas or sewage works.
Industrial development bonds are ordinarily dependent on the credit quality of a
private user, not the public issuer.
    

General obligation municipal bonds are secured by the issuer's pledge of full
faith, credit and taxing power. Revenue or special tax bonds are payable from
the revenues derived from a particular facility or, in some cases, from a
special excise or other tax, but not from general tax revenue.


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 21
<PAGE>

Municipal notes are issued to meet the short-term funding requirements of local,
regional and state governments. Municipal notes include bond anticipation notes,
revenue anticipation notes and tax and revenue anticipation notes. These are
short-term debt obligations issued by state and local governments to aid cash
flows while waiting for taxes or revenue to be collected, at which time the debt
is retired. Other types of municipal notes in which the portfolio may invest are
construction loan notes, short-term discount notes, tax-exempt commercial paper,
demand notes, and similar instruments. Demand notes permit an investor (such as
the portfolio) to demand from the issuer payment of principal plus accrued
interest upon a specified number of days' notice. The portfolios eligible to
purchase municipal bonds may also purchase AMT bonds. AMT bonds are tax-exempt
private activity bonds issued after August 7, 1986, the proceeds of which are
directed, at least in part, to private, for-profit organizations. While the
income from AMT bonds is exempt from regular federal income tax, it is a tax
preference item in the calculation of the alternative minimum tax. The
alternative minimum tax is a special separate tax that applies to a limited
number of taxpayers who have certain adjustments to income or tax preference
items.

   
Preferred Stock: are non-voting ownership shares in a corporation which pay a
fixed or variable stream of dividends.
    

Repurchase Agreements: are transactions by which a portfolio purchases a
security and simultaneously commits to resell that security to the seller (a
bank or securities dealer) at an agreed upon price on an agreed upon date
(usually within seven days 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 date of maturity of the purchased security. Such agreements
permit the portfolio to keep all its assets at work while retaining overnight
flexibility in pursuit of investments of a longer term nature. The Adviser will
continually monitor the value of the underlying collateral to ensure that its
value, including accrued interest, always equals or exceeds the repurchase
price.

   
Pursuant to an order issued by the SEC, the Fund's portfolios may pool their
daily uninvested cash balances in order to invest in repurchase agreements on a
joint basis. By entering into Repurchase Agreements on a joint basis, it is
expected that the portfolios will incur lower transaction costs and potentially
obtain higher rates of interest on such Repurchase Agreements. Each portfolio's
participation in the income from jointly purchased Repurchase Agreements will be
based on that portfolio's percentage share in the total Repurchase Agreement.
    

       
SMBS--Stripped Mortgage-Backed Securities: are Derivatives in the form of
multi-class mortgage securities. SMBS may be issued by agencies or
instrumentalities of the U.S. Government and private originators of, or
investors in, mortgage loans, including savings and loan associations, mortgage
banks, commercial banks, investment banks and special purpose entities of the
foregoing.

       
SMBS are usually structured with two classes that receive different proportions
of the interest and principal distributions on a pool of mortgage assets. One
type of SMBS will have one class receiving some of the interest and most of the
principal from the mortgage assets, while the other class will receive most of
the interest and the remainder of the principal. In some cases, one class will
receive all of the interest (the interest-only or IO class), while the other
class will receive all of the principal (the principal-only or PO class). The
yield to maturity on IOs and POs is extremely sensitive to the rate of principal
payments (including prepayments) on the related underlying mortgage assets, and
a rapid rate of principal payments may have a material adverse effect on a
portfolio yield to maturity. If 


- --------------------------------------------------------------------------------
MAS Fund - 22          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

the underlying mortgage assets experience greater than anticipated prepayments
of principal, a portfolio may fail to fully recoup its initial investment in
these securities, even if the security is in one of the highest rating
categories.
       
   
Although SMBS are purchased and sold by institutional investors through several
investment banking firms acting as brokers or dealers, these securities were
only recently developed. As a result, established trading markets have not yet
developed and, accordingly, certain of these securities may be deemed illiquid
and subject to a portfolio's limitations on investment in illiquid securities.

Structured Investments: are Derivatives in the form of a unit or units
representing an undivided interest(s) in assets held in a trust that is not an
investment company as defined in the 1940 Act. A trust unit pays a return based
on the total return of securities and other investments held by the trust and
the trust may enter into one or more Swaps to achieve its objective. For
example, a trust may purchase a basket of securities and agree to exchange the
return generated by those securities for the return generated by another basket
or index of securities. A portfolio will purchase Structured Investments in
trusts that engage in such Swaps only where the counterparties are approved by
the Adviser in accordance with credit-risk guidelines established by the Board
of Trustees.

Structured Notes: are Derivatives on which the amount of principal repayment and
or interest payments is based upon the movement of one or more factors. These
factors include, but are not limited to, currency exchange rates, interest rates
(such as the prime lending rate and LIBOR) and stock indices such as the S&P 500
Index. In some cases, the impact of the movements of these factors may increase
or decrease through the use of multipliers or deflators. The use of Structured
Notes allows a portfolio to tailor its investments to the specific risks and
returns the Adviser wishes to accept while avoiding or reducing certain other
risks.

Swaps--Swap Contracts: are Derivatives in the form of a contract or other
similar instrument which is an agreement to exchange the return generated by one
instrument for the return generated by another instrument. The payment streams
are calculated by reference to a specified index and agreed upon notional
amount. The term specified index includes, but is not limited to, currencies,
fixed interest rates, prices and total return on interest rate indices,
fixed-income indices, stock indices and commodity indices (as well as amounts
derived from arithmetic operations on these indices). For example, a portfolio
may agree to swap the return generated by a fixed-income index for the return
generated by a second fixed-income index. The currency Swaps in which the
portfolios may enter will generally involve an agreement to pay interest streams
in one currency based on a specified index in exchange for receiving interest
streams denominated in another currency. Such Swaps may involve initial and
final exchanges that correspond to the agreed upon notional amount.

A portfolio will usually enter into Swaps on a net basis, i.e., the two return
streams are netted out in a cash settlement on the payment date or dates
specified in the instrument, with a portfolio receiving or paying, as the case
may be, only the net amount of the two returns. A portfolio's obligations under
a swap agreement will be accrued daily (offset against any amounts owing to the
portfolio) and any accrued but unpaid net amounts owed to a swap counterparty
will be covered by the maintenance of a segregated account consisting of cash or
liquid securities. A portfolio will not enter into any swap agreement unless the
counterparty meets the rating requirements set forth in guidelines established
by the Board of Trustees. 
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 23
<PAGE>

   
Possible Risks: Interest rate and total rate of return Swaps do not involve the
delivery of securities, other underlying assets, or principal. Accordingly, the
risk of loss with respect to interest rate and total rate of return Swaps is
limited to the net amount of interest payments that a portfolio is contractually
obligated to make. If the other party to an interest rate or total rate of
return swap defaults, a portfolio's risk of loss consists of the net amount of
interest payments that a portfolio is contractually entitled to receive. In
contrast, currency swaps may involve the delivery of the entire principal value
of one designated currency in exchange for the other designated currency.
Therefore, the entire principal value of a currency swap may be subject to the
risk that the other party to the swap will default on its contractual delivery
obligations. If there is a default by the counterparty, a portfolio may have
contractual remedies pursuant to the agreements related to the transaction. The
swap market has grown substantially in recent years with a large number of banks
and investment banking firms acting both as principals and as agents utilizing
standardized swap documentation. As a result, the swap market has become
relatively liquid. Swaps that include caps, floors, and collars are more recent
innovations for which standardized documentation has not yet been fully
developed and, accordingly, they are less liquid than Swaps.

The use of Swaps is a highly specialized activity which involves investment
techniques and risks different from those associated with ordinary portfolio
securities transactions. If the Adviser is incorrect in its forecasts of market
values, interest rates, and currency exchange rates, the investment performance
of the portfolios would be less favorable than it would have been if this
investment technique were not used.
    

U.S. Governments--U.S. Treasury securities: are Fixed-Income Securities which
are backed by the full faith and credit of the U.S. Government as to the payment
of both principal and interest.

       
When-Issued Securities: are securities purchased at a certain price even though
the securities may not be delivered for up to 90 days. No payment or delivery is
made by a portfolio in a when-issued transaction until the portfolio receives
payment or delivery from the other party to the transaction. Although a
portfolio receives no income from the above described securities prior to
delivery, the market value of such securities is still subject to change. As a
consequence, it is possible that the market price of the securities at the time
of delivery may be higher or lower than the purchase price. A portfolio will
maintain with the custodian a segregated account consisting of cash or liquid
securities in an amount at least equal to these commitments.

   
Yankees: are U.S. dollar-denominated Fixed-Income Securities issued by a foreign
government or corporation and sold in the U.S.

Zero Coupons--Zero Coupon Obligations: are Fixed-Income Securities that do not
make regular interest payments. Instead, zero coupon obligations are sold at
substantial discounts from their face value. The difference between a zero
coupon obligation's issue or purchase price and its face value represents the
imputed interest an investor will earn if the obligation is held until maturity.
Zero Coupons may offer investors the opportunity to earn higher yields than
those available on ordinary interest-paying obligations of similar credit
quality and maturity. However, zero coupon obligation prices may also exhibit
greater price volatility than ordinary Fixed-Income Securities because of the
manner in which their principal and interest are returned to the investor.
    


- --------------------------------------------------------------------------------
MAS Fund - 24          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

                        GENERAL SHAREHOLDER INFORMATION

       
PURCHASE OF SHARES

   
The Advisory Foreign Fixed Income and Advisory Mortgage Portfolios are available
only to private advisory clients of Miller Anderson & Sherrerd, LLP. investment
adviser to MAS Funds.

Shares of each portfolio may be purchased at the net asset value per share next
determined after receipt of the purchase order. The portfolios determine net
asset value as described under General Shareholder Information--Valuation of
Shares each day that the portfolios are open. See Other Information--Closed
Holidays.

Other Purchase Information: The Fund reserves the right, in its sole discretion,
to suspend the offering of any of its portfolios or to reject any purchase
orders when, in the judgement of management, such suspension or rejection is in
the best interest of the Fund.

Purchases of a portfolio's shares will be made in full and fractional shares of
the portfolio calculated to three decimal places. In the interest of economy and
convenience, certificates for shares will not be issued except at the written
request of the shareholder. Certificates for fractional shares, however. will
not be issued.
    

REDEMPTION OF SHARES

   
Shares of each portfolio may be redeemed by mail, or, if authorized, by
telephone. No charge is made for redemptions. The value of Shares redeemed may
be more or less than the purchase price, depending on the net asset value at the
time of redemption which is based on the market value of the investment
securities held by the portfolio. See Other Information-Closed Holidays and
Valuation of Shares.
    

Neither the Distributor nor the Fund will be responsible for any loss,
liability, cost, or expense for acting upon facsimile instructions or upon
telephone instructions that they reasonably believe to be genuine. In order to
confirm that telephone instructions in connection with redemptions are genuine,
the Fund and Distributor will provide written confirmation of transactions
initiated by telephone.

   
Payment of the redemption proceeds will ordinarily be made within three business
days after receipt of an order for a redemption. The Fund may suspend the right
of redemption or postpone the date of redemption at times when the New York
Stock Exchange ("NYSE"), the Custodian, or the Fund is closed (see Other
Information-Closed Holidays) or under any emergency circumstances as determined
by the SEC.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 25
<PAGE>

   
If the Board of Trustees determines that it would be detrimental to the best
interests of the remaining shareholders of the Fund to make payment wholly or
partly in cash, the Fund may pay the redemption proceeds in whole or in part by
a distribution in-kind of readily marketable securities held by a portfolio in
lieu of cash in conformity with applicable rules of the SEC. Investors may incur
brokerage charges on the sale of portfolio securities received in such payments
of redemptions.

Valuation of Shares

Net asset value per share is computed by dividing the total value of the
investments and other assets of the portfolio, less any liabilities, by the
total outstanding shares of the portfolio. The net asset value per share is
determined as of one hour after the close of the bond markets (normally 4:00
p.m. Eastern Time) on each day the portfolio is open for business (See Other
Information-Closed Holidays). Bonds and other Fixed-Income Securities listed on
a foreign exchange are valued at the latest quoted sales price available before
the time when assets are valued. For purposes of net asset value per share, all
assets and liabilities initially expressed in foreign currencies will be
converted into U.S. dollars at the bid price of such currencies against U.S.
dollars.
    

Net asset value includes interest on bonds and other Fixed-Income Securities
which is accrued daily. Bonds and other Fixed-Income Securities which are traded
over the counter and on an exchange will be valued according to the broadest and
most representative market, and it is expected that for bonds and other
Fixed-Income Securities this ordinarily will be the over-the-counter market.

   
However, bonds and other Fixed-Income Securities may be valued on the basis of
prices provided by a pricing service when such prices are believed to reflect
the fair market value of such securities. The prices provided by a pricing
service are determined without regard to bid or last sale prices but take into
account institutional size trading in similar groups of securities and any
developments related to specific securities. Bonds and other Fixed-Income
Securities not priced in this manner are valued at the most recent quoted bid
price, or when stock exchange valuations are used, at the latest quoted sale
price on the day of valuation. If there is no such reported sale, the latest
quoted bid price will be used. Securities purchased with remaining maturities of
60 days or less are valued at amortized cost when the Board of Trustees
determines that amortized cost reflects fair value. In the event that amortized
cost does not approximate market, market prices as determined above will be
used. Other assets and securities, for which no quotations are readily available
(including restricted securities), and, to the extent permitted by the SEC,
securities for which the value has been materially affected by events occurring
after the close of the market on which they principally trade, will be valued in
good faith at fair value using methods approved by the Board of Trustees.
    


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MAS Fund - 26          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Dividends, Distributions and Taxes

The Advisory Foreign Fixed Income and the Advisory Mortgage Portfolios will
normally distribute substantially all of their net investment income to
shareholders on a quarterly and monthly basis, respectively.
    

If any portfolio does not have income available to distribute, as determined in
compliance with the appropriate tax laws, no distribution will be made.

   
If any net capital gains are realized from the sale of underlying securities,
the portfolios normally distribute such gains with the last distribution for the
calendar year.

All dividends and distributions are automatically paid in additional shares of
the portfolio unless the shareholder elects otherwise. Such election must be
made in writing to the Fund and may be made on the Account Registration Form.

TAXES: The following is a summary of some important tax issues that affect the
portfolios of the Fund and their shareholders. The summary is based on current
tax laws and regulations, which may be changed by legislative, judicial or
administrative action. No attempt has been made to present a detailed
explanation of the tax treatment of each portfolio or its shareholders. More
information about taxes is in the Statement of Additional Information.
Shareholders are urged to consult their tax advisors regarding specific
questions as to federal, state and local income taxes.
    

Federal Taxes: Each portfolio of the Fund is treated as a separate entity for
federal income tax purposes and intends to qualify for the special tax treatment
afforded regulated investment companies. As such, each portfolio will not be
subject to federal income tax to the extent it distributes net investment
company taxable income and net capital gains to shareholders. The Fund will
notify shareholders annually as to the tax classification of all distributions.

   
Income dividends received by shareholders will be taxable as ordinary income,
whether received in cash or in additional shares. Capital gains distributions
are taxable to shareholders at capital gains rates. Each portfolio will
designate capital gains distributions to individual shareholders as either
subject to the federal capital gains rate imposed on property held for more than
18 months or on property held for more than 1 year but not more than 18 months.

Distributions paid in January but declared by a portfolio in October, November
or December of the previous year are taxable to shareholders in the previous
year.
    

       


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Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 27
<PAGE>

   
Each portfolio intends to declare and pay dividends and distributions so as to
avoid imposition of the federal excise tax applicable to regulated investment
companies. Further discussion is included in the Statement of Additional
Information.

The Fund is required by federal law to withhold 31% of reportable payments
(which may include dividends and capital gains distributions) paid to
shareholders. In order to avoid this withholding requirement, shareholders must
certify on their Account Registration Forms that their Social Security Number or
Taxpayer Identification Number is correct, and that they are not subject to
backup withholding.

Exchanges and redemptions of shares in a portfolio are taxable events.

Foreign Income Taxes: Investment income received by the Advisory Foreign Fixed
Income Portfolio from sources within foreign countries may be subject to foreign
income taxes withheld at the source. The Advisory Foreign Fixed Income and the
Advisory Mortgage Portfolios may be able to file an election with the Internal
Revenue Service to pass through to its shareholders for foreign tax credit
purposes the amount of foreign income taxes paid by such portfolio. Further
discussion is included in the Statement of Additional Information.
    

State and Local Income Taxes: The Fund is formed as a Pennsylvania Business
Trust and is not liable for any corporate income or franchise tax in the
Commonwealth of Pennsylvania. Shareholders should consult their tax advisors for
the state and local income tax consequences of distributions from the
portfolios.

   
TRUSTEES OF THE TRUST: The affairs of the Trust are supervised by the Trustees
under the laws governing business trusts in the Commonwealth of Pennsylvania.
The Trustees have approved contracts under which, as described above, certain
companies provide essential management, administrative and shareholder services
to the Trust.

INVESTMENT ADVISER: The Investment Adviser to the Fund, Miller Anderson &
Sherrerd, LLP (the "Adviser"), is a Pennsylvania limited liability partnership
founded in 1969, wholly owned by indirect subsidiaries of Morgan Stanley, Dean
Witter, Discover & Co., and is located at One Tower Bridge, West Conshohocken,
PA 19428. The Adviser provides investment services to employee benefit plans,
endowment funds, foundations and other institutional investors and as of
December 31, 1997 had in excess of $58.1 billion in assets under management. On
May 31, 1997, Morgan Stanley Group Inc., then the indirect parent of the
Adviser, merged with Dean Witter, Discover & Co. to form Morgan Stanley, Dean
Witter, Discover & Co. In connection with this transaction, the Adviser entered
into a new Investment Management Agreement ("Agreement") with MAS Funds dated
May 31, 1997, which Agreement was approved by the shareholders of each portfolio
at a special meeting held on May 1, 1997 or at an adjournment of such meeting
held on May 12, 1997. The Adviser will retain its name and remain at its current
location, One Tower Bridge, West Conshohocken, PA 19428. The Adviser will
continue to provide investment counseling services to employee benefit plans,
endowments, foundations and other institutional investors.
    


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MAS Fund - 28          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
Under the Agreement with the Fund, the Adviser, subject to the control and
supervision of the Fund's Board of Trustees and in conformance with the stated
investment objectives and policies of each portfolio of the Fund, manages the
investment and reinvestment of the assets of each portfolio of the Fund. In this
regard, it is the responsibility of the Adviser to make investment decisions for
the Fund's portfolios and to place each portfolio's purchase and sales orders.
As compensation for the services rendered by the Adviser under the Agreement,
each portfolio pays the Adviser an advisory fee calculated by applying a
quarterly rate. The following table shows the Adviser's contractual rate
(annualized) along with the Adviser's actual rate of compensation for the Fund's
1997 fiscal year.

                                                             FY 1997
                                   Contractual                Actual
                                      Rate              Compensation Rate
Advisory Foreign Fixed Income         375%                     000%
Advisory Mortgage                     375                      000

Until further notice, the Adviser has voluntarily agreed to waive advisory fees
and/or reimburse certain expenses to the extent necessary to keep Total
Operating Expenses actually deducted from portfolio assets for the Advisory
Foreign Fixed Income and Advisory Mortgage Portfolios from exceeding 0.15% and
0.08% respectively.
    

PORTFOLIO MANAGEMENT

   
A description of the business experience during the past five years for each of
the investment professionals who are primarily responsible for the day-to-day
management of the Fund's portfolios is as follows:

Kenneth B. Dunn, Managing Director, Morgan Stanley, joined MAS in 1987. He
assumed responsibility for the Advisory Mortgage Portfolio in 1995.

J. David Germany, Managing Director, Morgan Stanley, joined MAS in 1991. He
assumed responsibility for the Advisory Foreign Fixed Income Portfolio in 1994.

Scott F. Richard, Managing Director, Morgan Stanley, joined MAS in 1992. He
assumed responsibility for the Advisory Mortgage Portfolio in 1995.

Richard B. Worley, Managing Director, Morgan Stanley, joined MAS in 1978. He
assumed responsibility for the Advisory Foreign Fixed Income Portfolio in 1994.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 29
<PAGE>

ADMINISTRATIVE SERVICES: MAS serves as Administrator to the Fund pursuant to an
Administration Agreement dated as of November 18, 1993. Under its Administration
Agreement with the Fund, MAS receives an annual fee, accrued daily and payable
monthly, of 0.08% of the Fund's average daily net assets, and is responsible for
all fees payable under any sub-administration agreements. Chase Global Funds
Services Company, a subsidiary of The Chase Manhattan Bank, 73 Tremont Street,
Boston MA 02108-3913, serves as Transfer Agent to the Fund pursuant to an
agreement also dated as of November 18, 1993, and provides fund accounting and
other services pursuant to a sub-administration agreement with MAS as
Administrator.

GENERAL DISTRIBUTION AGENT: Shares of the Fund are distributed exclusively
through MAS Fund Distribution, Inc., a wholly-owned subsidiary of the Adviser.

   
PORTFOLIO TRANSACTIONS: The investment advisory agreement authorizes the Adviser
to select the brokers or dealers that will execute the purchases and sales of
investment securities for each of the Fund's portfolios and directs the Adviser
to use its best efforts to obtain the best execution with respect to all
transactions for the portfolios. In doing so, a portfolio may pay higher
commission rates or markups on principal transactions than the lowest available
when the Adviser believes it is reasonable to do so in light of the value of the
research, statistical, and pricing services provided by the broker or dealer
effecting the transaction.

It is not the Fund's practice to allocate brokerage or principal business on the
basis of sales of shares which may be made through intermediary brokers or
dealers. However, the Adviser may place portfolio orders with qualified
broker-dealers who recommend the Fund's portfolios or who act as agents in the
purchase of shares of the portfolios for their clients.

Some securities considered for investment by each of the Fund's portfolios may
also be appropriate for other clients served by the Adviser. The Adviser may
place a combined order for two or more accounts or portfolios for the purchase
or sale of one same security if, in its judgment, joint execution is in the best
interest of each participant and will result in best price and execution. If
purchase or sale of securities consistent with the investment policies of a
portfolio and one or more of these other clients served by the Adviser is
considered at or about the same time, transactions in such securities will be
allocated among the portfolio and clients in a manner deemed fair and reasonable
by the Adviser. Although there is no specified formula for allocating such
transactions, the various allocation methods used by the Adviser, and the
results of such allocations, are subject to periodic review by the Fund's
Trustees. The Adviser may use its broker dealer affiliates, including Morgan
Stanley & Co., a wholly owned subsidiary of Morgan Stanley, Dean Witter,
Discover & Co., the parent of MAS's general partner and limited partner, to
carry out the Fund's transactions, provided the Fund receives brokerage services
and commission rates comparable to those of other broker dealers.

OTHER INFORMATION - Description of Shares and Voting Rights: The Fund was
established under Pennsylvania law by a Declaration of Trust dated February 15,
1984, as amended and restated as of November 18, 1993. The Fund is authorized to
issue an unlimited number of shares of beneficial interest, without par value,
from an unlimited number of series (portfolios) of shares. Currently the Fund
consists of twenty-seven portfolios.
    


- --------------------------------------------------------------------------------
MAS Fund - 30          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
The shares of each portfolio of the Fund are fully paid and non-assessable, and
have no preference as to conversion, exchange, dividends, retirement or other
features. The shares of each portfolio of the Fund have no preemptive rights.
The shares of the Fund have non-cumulative voting rights, which means that the
holders of more than 50% of the shares voting for the election of Trustees can
elect 100% of the Trustees if they choose to do so. Shareholders are entitled to
one vote for each full share held (and a fractional vote for each fractional
share held), then standing in their name on the books of the Fund.

Meetings of shareholders will not be held except as required by the 1940 Act,
and other applicable law. A meeting will be held to vote on the removal of a
Trustee or Trustees of the Fund if requested in writing by the holders of not
less than 10% of the outstanding shares of the Fund. The Fund will assist in
shareholder communication in such matters to the extent required by law.
    
       
   
Custodians: The Chase Manhattan Bank, New York, NY and Morgan Stanley Trust
Company (NY), Brooklyn, NY serve as custodians for the Fund. The custodians hold
cash, securities and other assets as required by the 1940 Act.
    

Transfer and Dividend Disbursing Agent: Chase Global Funds Services Company, a
subsidiary of The Chase Manhattan Bank, 73 Tremont Street, Boston, MA
02108-3913, serves as the Funds' Transfer Agent and dividend disbursing agent.

Reports: Shareholders receive semi-annual and annual financial statements.
Annual financial statements are audited by Price Waterhouse LLP, independent
accountants.

Litigation: The Fund is not involved in any litigation.

   
Closed Holidays: Currently, the weekdays on which the Fund is closed for
business are: New Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good
Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and
Christmas Day.
    

TRUSTEES AND OFFICERS

The following is a list of the Trustees and the principal executive officers of
the Fund and a brief statement of their present positions and principal
occupations during the past five years:

   
Thomas L. Bennett,* Chairman of the Board of Trustees; Managing Director, Morgan
Stanley; Portfolio Manager and member of the Executive Committee, Miller
Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.; formerly
Director, Morgan Stanley Universal Funds, Inc.
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 31
<PAGE>

   
Thomas P. Gerrity, Trustee; Dean and Reliance Professor of Management and
Private Enterprise, Wharton School of Business, University of Pennsylvania;
Director, Digital Equipment Corporation; Director, Sun Company, Inc.; Director,
Fannie Mae; Director, Reliance Group Holdings; Director, CVS Corporation;
Director, Union Carbide Corporation.
    

Joseph P. Healey, Trustee; Headmaster, Haverford School; formerly Dean, Hobart
College; Associate Dean, William & Mary College.

Joseph J. Kearns, Trustee; Vice President and Treasurer, The J. Paul Getty
Trust; Director, Electro Rent Corporation; Trustee, Southern California Edison
Nuclear Decommissioning Trust; Director, The Ford Family Foundation.

Vincent R. McLean, Trustee; Director, William Penn Life Insurance Company of New
York; formerly Executive Vice President, Chief Financial Officer, Director and
Member of the Executive Committee of Sperry Corporation (now part of Unisys
Corporation).

C. Oscar Morong, Jr., Trustee; Managing Director, Morong Capital Management;
Director, Ministers and Missionaries Benefit Board of American Baptist Churches,
The Indonesia Fund, The Landmark Funds; formerly Senior Vice President and
Investment Manager for CREF, TIAA-CREF Investment Management, Inc.

*Trustee Bennett is deemed to be an "interested person" of the Fund as that term
is defined in the Investment Company Act of 1940, as amended.

               --------------------------------------------------

James D. Schmid, President, MAS Funds; Principal, Morgan Stanley; Head of Mutual
Funds, Miller Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.;
Chairman of the Board of Directors, The Minerva Fund, Inc.; formerly Vice
President, The Chase Manhattan Bank.

Lorraine Truten, CFA, Vice President, MAS Funds; Principal, Morgan Stanley; Head
of Mutual Fund Services, Miller Anderson & Sherrerd, LLP; President, MAS Fund
Distribution, Inc.

   
John H. Grady, Jr., Secretary, MAS Funds; Partner, Morgan, Lewis & Bockius LLP;
formerly Attorney, Ropes & Gray.
    


- --------------------------------------------------------------------------------
MAS Fund - 32          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

   
                                January 31, 1998

Investment Adviser and Administrator:        Transfer Agent:

Miller Anderson & Sherrerd, LLP              Chase Global Funds Services Company
One Tower Bridge                             73 Tremont Street
West Conshohocken,                           Boston, Massachusetts 02108-0913
Pennsylvania 19428-2899

                           General Distribution Agent:

                           MAS Fund Distribution, Inc.
                           One Tower Bridge
                           P.O. Box 868
                           West Conshohocken,
                           Pennsylvania 19428-0868

                                Table of Contents

                              Page                                          Page

Fund Expenses                   2       General Shareholder Information     
Prospectus Summary              4         Purchase of Shares                 25
Financial Highlights            6         Redemption of Shares               25
Yield and Total Return          7         Valuation of Shares                26
Investment Suitability          7         Dividends, Distributions
Investment Limitations          8           and Taxes                        27
Portfolio Summaries            10       Investment Adviser                   28
Prospectus Glossary                     Portfolio Management                 29
  Strategies                   12       Administrative Services              30
  Investments                  14       General Distribution Agent           30
                                        Portfolio Transactions               30
                                        Trustees and Officers                31
    


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Fund - 33
<PAGE>

- --------------------------------------------------------------------------------

                                             MAS [LOGO]
                                             MAS FUNDS

                                          --------------------------------------
                                                                      PROSPECTUS
                                          --------------------------------------

                                             Miller
                                             Anderson
                                             & Sherrerd, LLP

               ONE TOWER BRIDGE - WEST CONSHOHOCKEN, PA 19428 - 800-354-8185
- --------------------------------------------------------------------------------
<PAGE>

                                   MAS FUNDS
                      STATEMENT OF ADDITIONAL INFORMATION

   
                               January 31, 1998

          MAS Funds (the "Fund") is a no load mutual fund consisting
                of twenty-seven portfolios (the "Portfolios")
                offering a variety of investment alternatives.
              This Statement of Additional Information sets forth
     information about the Fund applicable to all twenty-seven Portfolios.

This Statement is not a Prospectus but should be read in conjunction with the
Fund's Prospectuses dated January 31, 1998, each as revised from time to time.
To obtain either of these Prospectuses, please call the
    

                            Client Services Group.

                     Client Services Group: 1-800-354-8185
                 Prices and Investment Results: 1-800-522-1525

                               TABLE OF CONTENTS

                                                                            Page
Business History                                                              3

Strategies and Investments                                                    3

Repurchase Agreements                                                         3

Securities Lending                                                            3

Foreign Investments                                                           4

Futures Contracts                                                             5

Restrictions on the Use of Futures Contracts                                  6

Risk Factors in Futures Transactions                                          6

Options                                                                       7

   
Options on Foreign Currencies                                                 8
    

Combined Transactions                                                         9

Risks of Options on Futures Contracts, Forward Contracts and Options
 on Foreign Currencies                                                        9

Swap Contracts                                                               10

Foreign Currency Exchange-Related Securities                                 11

Municipal Bonds                                                              12

Duration                                                                     13

Mortgage-Backed Securities                                                   14

Stripped Mortgage-Backed Securities                                          16

U.S. Government Securities                                                   16

Zero Coupon Bonds                                                            17

Eurodollar and Yankee Obligations                                            17

Brady Bonds                                                                  18

   
Cash Reserves Portfolio                                                      19
    

Tax Considerations                                                           19

Purchase of Shares                                                           22

Redemption of Shares                                                         22

Transactions with Broker/Dealers                                             23

   
Shareholder Services                                                         23

Investment Limitations                                                       23
    
                                                    1


<PAGE>




   
Management of the Fund                                              26

Distribution Plans                                                  30

Shareholder Service Agreement                                       31

Investment Adviser                                                  31

Administration                                                      33

Distributor for Fund                                                34

Custodians                                                          34

Portfolio Transactions                                              34

Annual Turnover                                                     36

General Information                                                 36

Performance Information                                             38

Comparative Indices                                                 44

Financial Statements                                                50

Appendix-Description of Securities and Ratings                      50
    



                                    2


<PAGE>

                               BUSINESS HISTORY

MAS Funds (formerly MAS Pooled Trust Fund) is an open end management
investment company established under Pennsylvania law as a Pennsylvania
business trust under an Amended and Restated Agreement and Declaration of
Trust dated November 18, 1993. The Fund was originally established as The MAS
Pooled Trust Fund, a Pennsylvania business trust, in February, 1984.

                          STRATEGIES AND INVESTMENTS

   
The following information supplements the characteristics and risks of
strategies and investments set forth in the Fund's Prospectuses:
    

                             REPURCHASE AGREEMENTS

   
Each of the Fund's portfolios may invest in repurchase agreements
collateralized by U.S. Government securities, certificates of deposit and
certain bankers' acceptances. Repurchase agreements are transactions by which
a portfolio purchases a security and simultaneously commits to resell that
security to the seller (a bank or securities dealer) at an agreed upon price
on an agreed upon date (usually within seven days 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 date of maturity of the purchased
security. In these transactions, the securities purchased by a portfolio have
a total value in excess of the value of the repurchase agreement and are held
by the portfolio's custodian bank until repurchased. Such agreements permit a
portfolio to keep all its assets at work while retaining "overnight"
flexibility in pursuit of investments of a longer-term nature. The Adviser and
the Fund's Administrator will continually monitor the value of the underlying
securities to ensure that their value always equals or exceeds the repurchase
price.

The use of repurchase agreements involves certain risks. For example, if the
seller of the agreements defaults on its obligation to repurchase the
underlying securities at a time when the value of these securities has
declined, a portfolio may incur a loss upon disposition of them. If the seller
of the agreement becomes insolvent and subject to liquidation or
reorganization under the Bankruptcy Code or other laws, a bankruptcy court may
determine that the underlying securities are collateral not within the control
of a portfolio and therefore subject to sale by the trustee in bankruptcy.
Finally, it is possible that a portfolio may not be able to substantiate its
interest in the underlying securities. While the Fund's management
acknowledges these risks, it is expected that they can be controlled through
stringent security selection criteria and careful monitoring procedures.
    

                              SECURITIES LENDING

   
Each portfolio may lend its investment securities to qualified institutional
investors who need to borrow securities in order to complete certain
transactions, such as covering short sales, avoiding failures to deliver
securities or completing arbitrage operations. By lending its investment
securities, a portfolio attempts to increase its income through the receipt of
interest on the loan. Any gain or loss in the market price of the securities
loaned that might occur during the term of the loan would be for the account
of the portfolio. Each portfolio may lend its investment securities to
qualified brokers, dealers, domestic and foreign banks or other financial
institutions, so long as the terms, the structure and the aggregate amount of
such loans are not inconsistent with the Investment Company Act of 1940 ( the
"1940 Act") or the rules and regulations or interpretations of the Securities
and Exchange Commission (the "SEC") thereunder, which currently require that
(a) the borrower pledge and maintain with the portfolio collateral consisting
of cash, an irrevocable letter of credit issued by a domestic U.S. bank, or
securities issued or guaranteed by the United States Government having a value
at all times not less than 100% of the value of the securities loaned, (b) the
    



                                       3


<PAGE>

   
borrower add to such collateral whenever the price of the securities loaned
rises (i.e., the borrower "marks to the market" on a daily basis), (c) the
loan be made subject to termination by the portfolio at any time, and (d) the
portfolio receive reasonable interest on the loan (which may include the
portfolio investing any cash collateral in interest bearing short-term
investments), any distribution on the loaned securities and any increase in
their market value. All relevant facts and circumstances, including the
creditworthiness of the broker, dealer or institution, will be considered in
making decisions with respect to the lending of securities, subject to review
by the Trustees.

At the present time, the staff of the SEC does not object if an investment
company pays reasonable negotiated fees in connection with loaned securities,
so long as such fees are set forth in a written contract and approved by the
investment company's Trustees. In addition, voting rights may pass with the
loaned securities, but if a material event were to occur affecting an
investment on loan, the loan must be called and the securities voted.
    

                              FOREIGN INVESTMENTS

   
Investors should recognize that investing in foreign securities involves
certain special considerations which are not typically associated with
investing in domestic securities. Since the securities of foreign issuers are
frequently denominated in foreign currencies, and since the portfolios may
temporarily hold uninvested reserves in bank deposits in foreign currencies,
the portfolios will be affected favorably or unfavorably by changes in
currency rates and in exchange control regulations, and may incur costs in
connection with conversions between various currencies. The investment
policies of the portfolios (except for the Domestic Fixed Income, Limited
Duration, Mortgage-Backed Securities, Advisory Mortgage and Cash Reserves
Portfolios) permit them to enter into forward foreign currency exchange
contracts in order to hedge their respective holdings and commitments against
changes in the level of future currency rates. Such contracts involve an
obligation to purchase or sell a specific currency at a future date at a price
set at the time of the contract.
    

As non-U.S. companies are not generally subject to uniform accounting,
auditing and financial reporting standards and practices comparable to those
applicable to domestic issuers, there may be less publicly available
information about certain foreign securities than about domestic securities.
Securities of some foreign issuers are generally less liquid and more volatile
than securities of comparable domestic companies. There is generally less
government supervision and regulation of stock exchanges, brokers and listed
issuers than in the U.S. In addition, with respect to certain foreign
countries, there is the possibility of expropriation or confiscatory taxation,
political or social instability, or diplomatic developments which could affect
U.S.

investments in those countries.

   
Although the portfolios will endeavor to achieve most favorable execution
costs in its portfolio transactions, fixed commissions on many foreign stock
exchanges are generally higher than negotiated commissions on U.S. exchanges.
In addition, it is expected that the expenses for custodian arrangements of
the Portfolio's foreign securities will be somewhat greater than the expenses
for the custodian arrangements for handling the U.S. securities of equal
value.

Certain foreign governments levy withholding taxes against dividend and
interest income. Although in some countries a portion of these taxes are
recoverable, the non-recovered portion of foreign withholding taxes will
reduce the income received from investments in such countries. However, these
foreign withholding taxes are not expected to have a significant impact on
those portfolios for which the investment objective is to seek long-term
capital appreciation and any income should be considered incidental.
    


                                      4
<PAGE>

   
The International Equity, Emerging Markets Value, International Fixed Income,
Advisory Foreign Fixed Income, Global Fixed Income, Multi-Asset-Class, High
Yield, Municipal, PA Municipal, Balanced Plus, Balanced, and Multi-Market
Fixed Income Portfolios may invest in the securities of issuers in Eastern
European and other developing markets. The economies of these countries are
currently suffering both from the stagnation resulting from centralized
economic planning and control and the higher prices and unemployment
associated with the transition to market economies. Unstable economic and
political conditions may adversely affect security values. Upon the accession
to power of Communist regimes approximately 50 years ago, the governments of a
number of Eastern European countries expropriated a large amount of property.
The claims of many property owners against those governments were never
finally settled. In the event of government action in this regard, there can
be no assurance that the portfolio's investments in Eastern Europe would not
also be expropriated, nationalized or otherwise confiscated.

In addition, the Equity, Growth, International Equity, Mid Cap Growth, Mid Cap
Value, Small Cap Value, Value, Balanced. Multi-Asset-Class and Balanced Plus
Portfolios may invest in Global Depositary Receipts ("GDRs") and European
Depositary Receipts ("EDRs") to the extent that they come available. GDRs and
EDRs are typically issued by foreign depositaries, and evidence ownership
interests in a security or pool of securities issued by either a foreign or a
U.S. corporation.

Holders of unsponsored GDRs and EDRs generally bear all the costs associated
with establishing the unsponsored GDRs and EDRs. The depositary of unsponsored
GDRs and EDRs is under no obligation to distribute shareholder communications
received from the underlying issuer or to pass through to the holders of the
unsponsored GDRs and EDRs voting rights with respect to the deposited
securities or pool of securities. GDRs and EDRs are not necessarily
denominated in the same currency as the underlying securities to which they
may be connected. Generally, GDRs or EDRs in registered form are designed for
use in the U.S. securities market and GDRs or EDRs in bearer form are designed
for use in securities markets outside the United States. The Funds may invest
in sponsored and unsponsored GDRs and EDRs. For purposes of the Funds'
investment policies, a Funds' investments in GDRs or EDRs will be deemed to be
investments in the underlying securities.
    

                               FUTURES CONTRACTS

   
Each portfolio, except the Cash Reserves Portfolio, may enter into futures
contracts, options, and options on futures contracts. Futures contracts
provide for the future sale by one party and purchase by another party of a
specified amount of a specific security at a specified future time and at a
specified price. Futures contracts which are standardized as to maturity date
and underlying financial instrument are traded on national futures exchanges.
Futures exchanges and trading are regulated under the Commodity Exchange Act
by the Commodity Futures Trading Commission ("CFTC"), a U.S. Government
agency.
    

Although futures contracts by their terms call for actual delivery or
acceptance of the underlying securities, in most cases the contracts are
closed out before the settlement date without the making or taking of
delivery. Closing out an open futures position is done by taking an opposite
position ("buying" a contract which has previously been "sold" or "selling" a
contract previously "purchased") in an identical contract to terminate the
position. Brokerage commissions are incurred when a futures contract is bought
or sold.

   
Futures traders are required to make a good faith margin deposit in cash or
acceptable securities with a broker or custodian to initiate and maintain open
positions in futures contracts. A margin deposit is intended to assure
completion of the contract (delivery or acceptance of the underlying
securities) if it is not terminated prior to the specified delivery date.
Minimum initial margin requirements are established by the futures exchange
and may be changed. Brokers may establish deposit requirements which are
higher than the exchange minimums. Futures contracts are customarily purchased
and sold on the basis of margin deposits that may 
    



                                      5
<PAGE>

range upward from less than 5% of the value of the contract being traded. A
Portfolio's margin deposits will be placed in a segregated account maintained
by the Fund's Custodian or with a futures commission merchant as approved by
the Fund's Board of Trustees.

After a futures contract position is opened, the value of the contract is
marked to market daily. If the futures contract price changes to the extent
that the margin on deposit does not satisfy margin requirements, payment of
additional "variation" margin will be required. Conversely, a change in the
contract value may reduce the required margin, resulting in a repayment of
excess margin to the contract holder. Variation margin payments are made to
and from the futures broker for as long as the contract remains open. The Fund
expects to earn interest income on its margin deposits.

   
Traders in futures contracts may be broadly classified as either "hedgers" or
"speculators." Hedgers use the futures markets primarily to offset unfavorable
changes in the value of securities otherwise held for investment purposes or
expected to be acquired by them. Speculators are less inclined to own the
securities underlying the futures contracts which they trade, and use futures
contracts with the expectation of realizing profits from fluctuations in the
value of the underlying securities. Regulations of the CFTC applicable to the
Fund require that the aggregate initial margins and premiums required to
establish non-hedging positions not exceed 5% of the liquidation value of a
portfolio.

Although techniques other than the sale and purchase of futures contracts
could be used to control a portfolio's exposure to market fluctuations, the
use of futures contracts may be a more effective means of hedging this
exposure. While the portfolios will incur commission expenses in both opening
and closing out futures positions, these costs are lower than transaction
costs incurred in the purchase and sale of the underlying securities.
    

                 RESTRICTIONS ON THE USE OF FUTURES CONTRACTS

A portfolio will not enter into futures contracts to the extent that its
outstanding obligations to purchase securities under these contracts in
combination with its outstanding obligations with respect to options
transactions would exceed 50% of its total assets, and will maintain assets
sufficient to meet its obligations under such contracts in a segregated
account with the custodian bank or will otherwise comply with the SEC's
position on asset coverage.

                     RISK FACTORS IN FUTURES TRANSACTIONS

   
Positions in futures contracts may be closed out only on an exchange which
provides a secondary market for such futures. However, there can be no
assurance that a liquid secondary market will exist for any particular futures
contract at any specific time. Thus, it may not be possible to close a futures
position. In the event of adverse price movements, a portfolio would continue
to be required to make daily cash payments to maintain its required margin. In
such situations, if the portfolio has insufficient cash, it may have to sell
portfolio securities to meet daily margin requirements at a time when it may
be disadvantageous to do so. In addition, the portfolio may be required to
make delivery of the instruments underlying interest rate futures contracts it
holds. The inability to close options and futures positions also could have an
adverse impact on a portfolio's ability to effectively hedge. A portfolio will
minimize the risk that it will be unable to close out a futures contract by
only entering into futures which are traded on national futures exchanges and
for which there appears to be a liquid secondary market.
    

The risk of loss in trading futures contracts in some strategies can be
substantial, due both to the low margin deposits required and the extremely
high degree of leverage involved in futures pricing. As a result, a relatively
small price movement in a futures contract may result in immediate and
substantial loss (as well as gain) to the 



                                      6
<PAGE>

   
investor. For example, if at the time of purchase, 10% of the value of the
futures contract is deposited as margin, a subsequent 10% decrease in the
value of the futures contract would result in a total loss of the margin
deposit, before any deduction for the transaction costs, if the account were
then closed out. A 15% decrease would result in a loss equal to 150% of the
original margin deposit if the contract were closed out. Thus, a purchase or
sale of a futures contract may result in losses in excess of the amount
invested in the contract. A portfolio would presumably have sustained
comparable losses if, instead of the futures contract, it had invested in the
underlying financial instrument and sold it after the decline.

Utilization of futures transactions by a portfolio does involve the risk of
imperfect or no correlation where the securities underlying futures contracts
have different maturities than the portfolio securities being hedged. It is
also possible that a portfolio could both lose money on futures contracts and
also experience a decline in value of its portfolio securities. There is also
the risk of loss by a portfolio of margin deposits in the event of bankruptcy
of a broker with whom the portfolio has an open position in a futures contract
or related option. Most futures exchanges limit the amount of fluctuation
permitted in futures contract prices during a single trading day. The daily
limit establishes the maximum amount that the price of a futures contract may
vary either up or down from the previous day's settlement price at the end of
a trading session. Once the daily limit has been reached in a particular type
of contract, no trades may be made on that day at a price beyond that limit.
The daily limit governs only price movement during a particular trading day
and therefore does not limit potential losses, because the limit may prevent
the liquidation of unfavorable positions. Futures contract prices have
occasionally moved to the daily limit for several consecutive trading days
with little or no trading, thereby preventing prompt liquidation of futures
positions and subjecting some futures traders to substantial losses.
    

                                    OPTIONS

Investments in options involve some of the same considerations that are
involved in connection with investments in futures contracts (e.g., the
existence of a liquid secondary market). In addition, the purchase of an
option also entails the risk that changes in the value of the underlying
security or contract will not be fully reflected in the value of the option
purchased. Depending on the pricing of the option compared to either the
futures contract or securities, an option may or may not be less risky than
ownership of the futures contract or actual securities. In general, the market
prices of options can be expected to be more volatile than the market prices
on the underlying futures contract or securities.

   
OTC Options are purchased from or sold to securities dealers, financial
institutions or other parties ("Counterparties") through direct bilateral
agreement with the Counterparty. In contrast to exchange listed options, which
generally have standardized terms and performance mechanics, all the terms of
an OTC Option, including such terms as method of settlement, term, exercise
price, premium, guarantees and security, are set by negotiation of the
parties. The portfolios expect generally to enter into OTC Options that have
cash settlement provisions, although it is not required to do so.

Unless the parties provide for it, there is no central clearing or guaranty
function in an OTC Option. As a result, if the Counterparty fails to make or
take delivery of the security, currency or other instrument underlying an OTC
Option it has entered into with a portfolio or fails to make a cash settlement
payment due in accordance with the terms of that option, the portfolio will
lose any premium it paid for the option as well as any anticipated benefit of
the transaction. Accordingly, the Adviser must assess the creditworthiness of
each such Counterparty or any guarantor of credit enhancement of the
Counterparty's credit to determine the likelihood that the terms of the OTC
Option will be satisfied. The staff of the SEC currently takes the position
that OTC Options purchased by the portfolios or sold by them (the cost of the
sell-back plus the in-the-money amount, if any) are illiquid, and are subject
to each portfolio's limitation on investing in illiquid securities.
    



                                      7
<PAGE>

   
The portfolios may also write covered-call options on foreign currencies for
cross-hedging purposes. A call option on a foreign currency is for
cross-hedging purposes if it is designed to protect against a decline in the
U.S. dollar value of a currency due to the changes of exchange rates vis a vis
the U.S. dollar and the option is written for a currency other than the
currency in which the security is denominated. In such circumstances, the
portfolios will follow the coverage requirements as described in the preceding
paragraph.
    

                         OPTIONS ON FOREIGN CURRENCIES

   
All portfolios, except the Cash Reserves, Domestic Fixed Income, Limited
Duration, Mortgage-Backed Securities and Advisory Mortgage Portfolios, may
purchase and write options on foreign currencies in a manner similar to that
in which futures contracts on foreign currencies, or forward contracts, will
be utilized. For example, a decline in the dollar value of a foreign currency
in which portfolio securities are denominated will reduce the dollar value of
such securities, even if their value in the foreign currency remains constant.
In order to protect against such diminution in the value of portfolio
securities, a portfolio may purchase put options on the foreign currency. If
the value of the currency does decline, a portfolio will have the right to
sell such currency for a fixed amount in dollars and will thereby offset, in
whole or in part, the adverse effect on its portfolio which otherwise would
have resulted.

Conversely, where a rise in the dollar value of a currency in which securities
to be acquired are denominated is projected, thereby increasing the cost of
such securities, a portfolio may purchase call options thereon. The purchase
of such options could offset, at least partially, the effects of the adverse
movements in exchange rates. As in the case of other types of options,
however, the benefit to a portfolio derived from purchases of foreign currency
options will be reduced by the amount of the premium and related transaction
costs. In addition, where currency exchange rates do not move in the direction
or to the extent anticipated, the portfolios could sustain losses on
transactions in foreign currency options which would require them to forego a
portion or all of the benefits of advantageous changes in such rates.

The portfolios may write options on foreign currencies for the same purposes.
For example, where a portfolio anticipates a decline in the dollar value of
foreign currency denominated securities due to adverse fluctuations in
exchange rates it could, instead of purchasing a put option, write a call
option on the relevant currency. If the anticipated decline occurs, the option
will most likely not be exercised, and the diminution in value of portfolio
securities will be offset by the amount of the premium received.

Similarly, instead of purchasing a call option to hedge against an anticipated
increase in the dollar cost of securities to be acquired, a portfolio could
write a put option on the relevant currency which, if rates move in the manner
projected, will expire unexercised and allow the portfolios to hedge such
increased cost up to the amount of the premium. As in the case of other types
of options, however, the writing of a foreign currency option will constitute
only a partial hedge up to the amount of the premium, and only if rates move
in the expected direction. If this does not occur, the option may be exercised
and the portfolios would be required to purchase or sell the underlying
currency at a loss which may not be offset by the amount of the premium.
Through the writing of options on foreign currencies, a portfolio also may be
required to forego all or a portion of the benefits which might otherwise have
been obtained from favorable movements in exchange rates.

The portfolios may only write covered call options on foreign currencies. A
call option written on a foreign currency by a portfolio is "covered" if the
portfolio owns the underlying foreign currency covered by the call, an
absolute and immediate right to acquire that foreign currency without
additional cash consideration (or for additional cash consideration held in a
segregated account by the Custodian) or upon conversion or exchange of other
foreign currency held in its portfolio. A written call option is also covered
if a portfolio has a call on the same foreign currency and in the same
principal amount as the call written where the exercise 
    



                                      8
<PAGE>

   
price of the call held (a) is equal to or less than the exercise price of the
call written or (b) is greater than the exercise price of the call written if
the difference is maintained by the portfolio in cash or liquid securities in
a segregated account with the Custodian, or (c) maintains in a segregated
account cash or liquid securities in an amount not less than the value of the
underlying foreign currency in U.S. dollars, marked-to-market daily.

The portfolios may also write call options on foreign currencies for
cross-hedging purposes. A call option on a foreign currency is for
cross-hedging purposes if it is designed to provide a hedge against a decline
in the U.S. dollar value of a security which a portfolio owns or has the right
to acquire due to an adverse change in the exchange rate and which is
denominated in the currency underlying the option. In such circumstances, the
portfolio will either "cover" the transaction as described above or
collateralize the option by maintaining in a segregated account with the
Custodian, cash or liquid securities in an amount not less than the value of
the underlying foreign currency in U.S. dollars marked-to-market daily.
    

                             COMBINED TRANSACTIONS

   
The portfolios may enter into multiple transactions, including multiple
options transactions, multiple futures transactions, multiple foreign currency
transactions (including forward foreign currency exchange contracts) and any
combination of futures, options and foreign currency transactions, instead of
a single transaction, as part of a single hedging strategy when, in the
opinion of the Adviser, it is in the best interest of the portfolio to do so.
A combined transaction, while part of a single strategy, may contain elements
of risk that are present in each of its component transactions and will be
structured in accordance with applicable SEC regulations and SEC staff
guidelines.
    

    RISKS OF OPTIONS ON FUTURES CONTRACTS, FORWARD CONTRACTS AND OPTIONS ON
                              FOREIGN CURRENCIES

Options on foreign currencies and forward contracts are not traded on contract
markets regulated by the CFTC or (with the exception of certain foreign
currency options) by the SEC. To the contrary, such instruments are traded
through financial institutions acting as market-makers, although foreign
currency options are also traded on certain national securities exchanges,
such as the Philadelphia Stock Exchange and the Chicago Board Options
Exchange, subject to SEC regulation. Similarly, options on currencies may be
traded over-the-counter. In an over-the-counter trading environment, many of
the protections afforded to exchange participants will not be available. For
example, there are no daily price fluctuation limits, and adverse market
movements could therefore continue to an unlimited extent over a period of
time. Although the purchase of an option cannot lose more than the amount of
the premium plus related transaction costs, this entire amount could be lost.
Moreover, the option writer and a trader of forward contracts could lose
amounts substantially in excess of their initial investments, due to the
margin and collateral requirements associated with such positions.

   
Options on foreign currencies traded on national securities exchanges are
within the jurisdiction of the SEC, as are other securities traded on such
exchanges. As a result, many of the protections provided to traders on
organized exchanges will be available with respect to such transactions. In
particular, all foreign currency option positions entered into on a national
securities exchange are cleared and guaranteed by the Options Clearing
Corporation ("OCC"), thereby reducing the risk of counterparty default.
Furthermore, a liquid secondary market in options traded on a national
securities exchange may be more readily available than in the over-the-counter
market, potentially permitting a portfolio to liquidate open positions at a
profit prior to exercise or expiration, or to limit losses in the event of
adverse market movements.
    

The purchase and sale of exchange-traded foreign currency options, however, is
subject to the risks of the availability of a liquid secondary market
described above, as well as the risks regarding adverse market 



                                      9
<PAGE>

movements, margining of options written, the nature of the foreign currency
market, possible intervention by governmental authorities and the effect of
other political and economic events. In addition, exchange-traded options of
foreign currencies involve certain risks not presented by the over-the-counter
market. For example, exercise and settlement of such options must be made
exclusively through the OCC, which has established banking relationships in
applicable foreign countries for this purpose. As a result, the OCC may, if it
determines that foreign governmental restrictions or taxes would prevent the
orderly settlement of foreign currency option exercises, or would result in
undue burdens on the OCC or its clearing member, impose special procedures on
exercise and settlement, such as technical changes in the mechanics of
delivery of currency, the fixing of dollar settlement prices or prohibitions,
on exercise.

   
In addition, futures contracts, options on futures contracts, forward
contracts and options on foreign currencies may be traded on foreign
exchanges. Such transactions are subject to the risk of governmental actions
affecting trading in or the prices of foreign currencies or securities. The
value of such positions also could be adversely affected by (i) other complex
foreign political and economic factors, (ii) lesser availability than in the
United States of data on which to make trading decisions, (iii) delays in the
portfolio's ability to act upon economic events occurring in foreign markets
during non business hours in the United States, (iv) the imposition of
different exercise and settlement terms and procedures and margin requirements
than in the United States, and (v) lesser trading volume.
    

                                SWAP CONTRACTS

   
All portfolios, except the Cash Reserves and Mid Cap Growth Portfolios, may
enter into Swap Contracts. A swap is an agreement to exchange the return
generated by one instrument for the return generated by another instrument.
The payment streams are calculated by reference to a specified index and
agreed upon notional amount. The term "specified index" includes currencies,
fixed interest rates, prices, total return on interest rate indices, fixed
income indices, stock indices and commodity indices (as well as amounts
derived from arithmetic operations on these indices). For example, a portfolio
may agree to swap the return generated by a fixed-income index for the return
generated by a second fixed-income index. The currency swaps in which the
portfolios may enter will generally involve an agreement to pay interest
streams in one currency based on a specified index in exchange for receiving
interest streams denominated in another currency. Such swaps may involve
initial and final exchanges that correspond to the agreed upon national
amount.

The swaps in which the portfolios may engage also include rate caps, floors
and collars under which one party pays a single or periodic fixed amount(s)
(or premium), and the other party pays periodic amounts based on the movement
of a specified index. Swaps do not involve the delivery of securities, other
underlying assets, or principal. Accordingly, the risk of loss with respect to
swaps is limited to the net amount of payments that a portfolio is
contractually obligated to make. If the other party to a swap defaults, a
portfolio's risk of loss consists of the net amount of payments that a
portfolio is contractually entitled to receive. Currency swaps usually involve
the delivery of the entire principal value of one designated currency in
exchange for the other designated currency. Therefore, the entire principal
value of a currency swap is subject to the risk that the other party to the
swap will default on its contractual delivery obligations. If there is a
default by the Counterparty, the portfolios may have contractual remedies
pursuant to the agreements related to the transaction. The swap market has
grown substantially in recent years with a large number of banks and
investment banking firms acting both as principals and as agents utilizing
standardized swap documentation. As a result, the swap market has become
relatively liquid. Caps, floors, and collars are more recent innovations for
which standardized documentation has not yet been fully developed and,
accordingly, they are less liquid than swaps.

The portfolios will usually enter into swaps on a net basis, i.e., the two
payment streams are netted out in a cash settlement on the payment date or
dates specified in the instrument, with a portfolio receiving or 
    



                                      10
<PAGE>

   
paying, as the case may be, only the net amount of the two payments. A
portfolio's obligations under a swap agreement will be accrued daily (offset
against any amounts owing to the portfolio) and any accrued but unpaid net
amounts owed to a swap Counterparty will be covered by the maintenance of a
segregated account consisting of cash or liquid securities to avoid any
potential leveraging of the portfolio. To the extent that these Swaps, Caps,
Floors, and Collars are entered into for hedging purposes, the Adviser
believes such obligations do not constitute "senior securities" under the 1940
Act and, accordingly, will not treat them as being subject to a portfolio's
borrowing restrictions. All of the portfolios of MAS Funds except the Cash
Reserves Portfolio may enter into OTC Derivatives transactions (Swaps, Caps,
Floors, Puts, etc., but excluding foreign exchange contracts) with
Counterparties that are approved by the Adviser in accordance with guidelines
established by the Board of Trustees. These guidelines provide for a minimum
credit rating for each Counterparty and various credit enhancement techniques
(for example, collateralization of amounts due from Counterparties) to limit
exposure to Counterparties with ratings below AA.

The use of swaps is a highly specialized activity which involves investment
techniques and risks different from those associated with ordinary portfolio
securities transactions. If the Adviser is incorrect in its forecasts of
market values, interest rates, and currency exchange rates, the investment
performance of the portfolios would be less favorable than it would have been
if this investment technique were not used.
    

                 FOREIGN CURRENCY EXCHANGE-RELATED SECURITIES

Foreign currency warrants--Foreign currency warrants are warrants which
entitle the holder to receive from their issuer an amount of cash (generally,
for warrants issued in the United States, in U.S. dollars) which is calculated
pursuant to a predetermined formula and based on the exchange rate between a
specified foreign currency and the U.S. dollar as of the exercise date of the
warrant. Foreign currency warrants generally are exercisable upon their
issuance and expire as of a specified date and time. Foreign currency warrants
have been issued in connection with U.S. dollar-denominated debt offerings by
major corporate issuers in an attempt to reduce the foreign currency exchange
risk which, from the point of view of prospective purchasers of the
securities, is inherent in the international fixed-income marketplace. Foreign
currency warrants may attempt to reduce the foreign exchange risk assumed by
purchasers of a security by, for example, providing for a supplemental payment
in the event that the U.S. dollar depreciates against the value of a major
foreign currency such as the Japanese Yen or German Deutschmark. The formula
used to determine the amount payable upon exercise of a foreign currency
warrant may make the warrant worthless unless the applicable foreign currency
exchange rate moves in a particular direction (e.g., unless the U.S. dollar
appreciates or depreciates against the particular foreign currency to which
the warrant is linked or indexed). Foreign currency warrants are severable
from the debt obligations with which they may be offered, and may be listed on
exchanges. Foreign currency warrants may be exercisable only in certain
minimum amounts, and an investor wishing to exercise warrants who possesses
less than the minimum number required for exercise may be required either to
sell the warrants or to purchase additional warrants, thereby incurring
additional transaction costs. In the case of any exercise of warrants, there
may be a time delay between the time a holder of warrants gives instructions
to exercise and the time the exchange rate relating to exercise is determined,
during which time the exchange rate could change significantly, thereby
affecting both the market and cash settlement values of the warrants being
exercised. The expiration date of the warrants may be accelerated if the
warrants should be delisted from an exchange or if their trading should be
suspended permanently, which would result in the loss of any remaining "time
value" of the warrants (i.e., the difference between the current market value
and the exercise value of the warrants), and, in the case where the warrants
were "out-of-the-money," in a total loss of the purchase price of the
warrants. Warrants are generally unsecured obligations of their issuers and
are not standardized foreign currency options issued by the OCC. Unlike
foreign currency options issued by the OCC, the terms of foreign exchange
warrants generally will not be amended in the event of governmental or
regulatory actions affecting exchange rates or in the event of the imposition
of other regulatory controls affecting the international currency



                                      11
<PAGE>

markets. The initial public offering price of foreign currency warrants is
generally considerably in excess of the price that a commercial user of
foreign currencies might pay in the interbank market for a comparable option
involving significantly larger amounts of foreign currencies. Foreign currency
warrants are subject to complex political or economic factors.

Principal exchange rate linked securities--Principal exchange rate linked
securities are debt obligations the principal on which is payable at maturity
in an amount that may vary based on the exchange rate between the U.S. dollar
and a particular foreign currency at or about that time. The return on
"standard" principal exchange rate linked securities is enhanced if the
foreign currency to which the security is linked appreciates against the U.S.
dollar, and is adversely affected by increases in the foreign exchange value
of the U.S. dollar; "reverse" principal exchange rate linked securities are
like the "standard" securities, except that their return is enhanced by
increases in the value of the U.S. dollar and adversely impacted by increases
in the value of foreign currency. Interest payments on the securities are
generally made in U.S. dollars at rates that reflect the degree of foreign
currency risk assumed or given up by the purchaser of the notes (i.e., at
relatively higher interest rates if the purchaser has assumed some of the
foreign exchange risk, or relatively lower interest rates if the issuer has
assumed some of the foreign exchange risk, based of the expectations of the
current market). Principal exchange rate linked securities may in limited
cases be subject to acceleration of maturity (generally, not without the
consent of the holders of the securities), which may have an adverse impact on
the value of the principal payment to be made at maturity.

Performance indexed paper--Performance indexed paper is U.S.
dollar-denominated commercial paper the yield of which is linked to certain
foreign exchange rate movements. The yield to the investor on performance
indexed paper is between the U.S. dollar and a designated currency as of or
about that time (generally, the index maturity two days prior to maturity).
The yield to the investor will be within a range stipulated at the time of
purchase of the obligation, generally with a guaranteed minimum rate of return
that is below, and a potential maximum rate of return that is above, market
yields on U.S. dollar-denominated commercial paper, with both the minimum and
maximum rates of return on the investment corresponding to the minimum and
maximum values of the spot exchange rate two business days prior to maturity.

                                MUNICIPAL BONDS

   
Municipal Bonds generally include debt obligations issued by states and their
political subdivisions, and duly constituted authorities and corporations, to
obtain funds to construct, repair or improve various public facilities such as
airports, bridges, highways, hospitals, housing, schools, streets and water
and sewer works. Municipal Bonds may also be issued to refinance outstanding
obligations as well as to obtain funds for general operating expenses and for
loans to other public institutions and facilities.
    

The two principal classifications of Municipal Bonds are "general obligation"
and "revenue" or "special tax" bonds. General obligation bonds are secured by
the issuer's pledge of its full faith, credit and taxing power for the payment
of principal and interest. Revenue or special tax bonds are payable only from
the revenues derived from a particular facility or class of facilities or, in
some cases, from the proceeds of a special excise or other tax, but not from
general tax revenues. The Municipal and PA Municipal Portfolios ("the
portfolios") may also invest in tax-exempt industrial development bonds,
short-term municipal obligations, project notes, demand notes and tax-exempt
commercial paper.

Industrial revenue bonds in most cases are revenue bonds and generally do not
have the pledge of the credit of the issuer. The payment of the principal and
interest on such industrial revenue bonds is dependent solely on the ability
of the user of the facilities financed by the bonds to meet its financial
obligations and the pledge, if any, of real and personal property so financed
as security for such payment. Short-term municipal obligations issued by
states, cities, municipalities or municipal agencies, include Tax Anticipation
Notes, Revenue 



                                      12
<PAGE>

Anticipation Notes, Bond Anticipation Notes, Construction Loan Notes and
Short-Term Discount Notes. Project Notes are instruments issued by the
Department of Housing and Urban Development but issued by a state or local
housing agency. While the issuing agency has the primary obligation on such
Project notes, they are also secured by the full faith and credit of the
United States.

Note obligations with demand or put options may have a stated maturity in
excess of one year, but permit any holder to demand payment of principal plus
accrued interest upon a specified number of days' notice. Frequently, such
obligations are secured by letters of credit or other credit support
arrangements provided by banks. The issuer of such notes normally has a
corresponding right, after a given period, to repay at its discretion the
outstanding principal of the note plus accrued interest upon a specific number
of days' notice to the bondholders. The interest rate on a demand note may be
based upon a known lending rate, such as the prime lending rate, and be
adjusted when such rate changes, or the interest rate on a demand note may be
a market rate that is adjusted at specified intervals. Each note purchased by
the portfolios will meet the quality criteria set out in the Prospectus for
the Portfolios.

The yields of Municipal Bonds depend on, among other things, general money
market conditions, conditions in the Municipal Bond market, the size of a
particular offering, the maturity of the obligation, and the rating of the
issue. The ratings of Moody's and Standard & Poor's represent their opinions
of the quality of the Municipal Bonds rated by them. It should be emphasized
that such ratings are general and are not absolute standards of quality.
Consequently, Municipal Bonds with the same maturity, coupon and rating may
have different yields, while Municipal Bonds of the same maturity and coupon,
but with different ratings may have the same yield. It will be the
responsibility of the investment management staff to appraise independently
the fundamental quality of the bonds held by the Portfolios.

Municipal Bonds are sometimes purchased on a "when-issued" basis meaning the
Portfolio has committed to purchase certain specified securities at an agreed
upon price when they are issued. The period between commitment date and
issuance date can be a month or more. It is possible that the securities will
never be issued and the commitment canceled.

   
From time to time proposals have been introduced before Congress to restrict
or eliminate the federal income tax exemption for interest on Municipal Bonds.
Similar proposals may be introduced in the future. If any such proposal were
enacted, it might restrict or eliminate the ability of the Portfolios to
achieve their investment objectives. In that event, the Fund's Trustees and
officers would reevaluate its investment objective and policies and consider
recommending to its shareholders changes in such objective and policies.
    

Similarly, from time to time proposals have been introduced before State and
local legislatures to restrict or eliminate the State and local income tax
exemption for interest on Municipal Bonds. Similar proposals may be introduced
in the future. If any such proposal were enacted, it might restrict or
eliminate the ability of the Portfolio to achieve its investment objective. In
that event, the Fund's Trustees and officers would reevaluate its investment
objective and policies and consider recommending to its shareholders changes
in such objective and policies.

                                   DURATION

   
The Limited Duration and Intermediate Duration Portfolios seek to achieve
their objectives by investing in the types of fixed income securities
described in the Prospectus and by maintaining an average duration of between
one and three years and two and five years, respectively. Duration is one of
the fundamental tools used by the Adviser in security selection for the
portfolios and any other portfolio which invests in fixed income securities.
    



                                      13
<PAGE>

Duration is a measure of the expected life of a fixed income security that was
developed as a more precise alternative to the concept of the "term of
maturity." Duration incorporates a bond's yield, coupon interest payments,
final maturity and call features into one measure.

Most debt obligations provide interest ("coupon") payments in addition to a
final ("par") payment at maturity. Some obligations also have call provisions.
Depending on the relative magnitude of these payments, the market values of
debt obligations may respond differently to changes in the level and structure
of interest rates.

Traditionally, a debt security's "term to maturity" has been used as a proxy
for the sensitivity of the security's price to changes in interest rates
(which is the "interest rate risk" or "volatility" of the security). However,
"term to maturity" measures only the time until a debt security provides its
final payment, taking no account of the pattern of the security's payments
prior to maturity. Duration is a measure of the expected life of a fixed
income security on a present value basis. Duration takes the length of the
time intervals between the present time and the time that the interest and
principal payments are scheduled or, in the case of a callable bond, expected
to be received, and weights them by the present values of the cash to be
received at each future point in time. For any fixed income security with
interest payments occurring prior to the payment of principal, duration is
always less than maturity. In general, all other things being the same, the
lower the stated or coupon rate of interest of a fixed income security, the
longer the duration of the security; conversely, the higher the stated or
coupon rate of interest of a fixed income security, the shorter the duration
of the security.

   
There are some situations where even the standard duration calculation does
not properly reflect the interest rate exposure of a security. For, example in
the case of mortgage-backed securities the current prepayment rates are more
critical than their stated final maturities in determining their interest rate
exposure. In these and other similar situations, the Adviser will use more
sophisticated analytical techniques that incorporate the economic life of a
security into the determination of its interest rate exposure.
    

                          MORTGAGE-BACKED SECURITIES

   
Mortgage-backed securities represent an ownership interest in a pool of
residential mortgage loans. These securities are designed to provide monthly
payments of interest and principal to the investor. The mortgagor's monthly
payments to his/her lending institution are "passed-through" to investors.
Most issuers or poolers provide guarantees of payments, regardless of whether
or not the mortgagor actually makes the payment. The guarantees made by
issuers or poolers are individual loan, title, pool and hazard insurance
purchased by the issuer. There can be no assurance that the private issuers
can meet their obligations under the policies. Mortgage-backed securities
issued by private issuers, whether or not such securities are subject to
guarantees, may entail greater risk. If there is no guarantee provided by the
issuer, mortgage-backed securities purchased by the portfolios will be rated
investment grade by Moody's or Standard & Poor's, or, if unrated, deemed by
the Adviser to be of investment grade quality.
    

Underlying Mortgages

   
Pools consist of whole mortgage loans or participation in loans. The majority
of these loans are made to purchasers of 1-4 family homes. The terms and
characteristics of the mortgage instruments are generally uniform within a
pool but may vary among pools. For example, in addition to fixed-rate
fixed-term mortgages, the portfolios may purchase pools of adjustable rate
mortgages (ARM), growing equity mortgages (GEM), graduated payment mortgage
(GPM) and other types where the principal and interest payment procedures
vary. 
    



                                      14
<PAGE>

ARM's are mortgages which reset the mortgage's interest rate with changes in
open market interest rates. The portfolios' interest income will vary with
changes in the applicable interest rate on pools of ARM's. GPM and GEM pools
maintain constant interest rates, with varying levels of principal repayment
over the life of the mortgage. These different interest and principal payment
procedures should not impact the portfolios' net asset values since the prices
at which these securities are valued each day will reflect the payment
procedures.

All poolers apply standards for qualifications to local lending institutions
which originate mortgages for the pools. Poolers also establish credit
standards and underwriting criteria for individual mortgages included in the
pools. In addition, many mortgages included in pools are insured through
private mortgage insurance companies.

Average Life

The average life of pass-through pools varies with the maturities, coupon
rates, and type of the underlying mortgage instruments. In addition, a pool's
term may be shortened by unscheduled or early payments of principal and
interest on the underlying mortgages. The occurrence of mortgage prepayments
is affected by factors including the level of interest rates, general economic
conditions, the location and age of the mortgage and other social and
demographic conditions.

Returns of Mortgage-Backed Securities

   
Yields on mortgage-backed pass-through securities are typically quoted based
on a prepayment assumption derived from the coupon and maturity of the
underlying instruments. Actual prepayment experience may cause the realized
return to differ from the assumed yield. Reinvestment of prepayments may occur
at higher or lower interest rates than the original investment, thus affecting
the realized returns of the portfolios. The compounding effect from
reinvestment of monthly payments received by each portfolio will increase its
return to shareholders, compared to bonds that pay interest semi-annually.
    

About Mortgage-Backed Securities

Interests in pools of mortgage-backed securities differ from other forms of
debt securities, which normally provide for periodic payment of interest in
fixed amounts with principal payments at maturity or specified call dates.
Instead, these securities provide a monthly payment which consists of both
interest and principal payments. In effect, these payments are a
"pass-through" of the monthly payments made by the individual borrowers on
their residential mortgage loans, net of any fees paid to the issuer or
guarantor of such securities. Additional payments are caused by repayments
resulting from the sale of the underlying residential property, refinancing or
foreclosure net of fees or costs which may be incurred. Some mortgage-backed
securities are described as "modified pass-through." These securities entitle
the holders to receive all interest and principal payments owed on the
mortgages in the pool, net of certain fees, regardless of whether or not the
mortgagors actually make payment.

Residential mortgage loans are pooled by the Federal Home Loan Mortgage
Corporation (FHLMC). FHLMC is a corporate instrumentality of the U.S.
Government and was created by Congress in 1970 for the purpose of increasing
the availability of mortgage credit for residential housing. FHLMC issues
Participation Certificates ("PC's") which represent interests in mortgages
from FHLMC's national portfolio. FHLMC guarantees the timely payment of
interest and ultimate collection of principal.

   
Fannie Mae is a Government-sponsored corporation owned entirely by private
stockholders. It is subject to general regulation by the Secretary of Housing
and Urban Development. Fannie Mae purchases residential mortgages from a list
of approved seller/servicers which include state and federally-chartered
    




                                      15
<PAGE>

   
savings and loan associations, mutual savings, banks, commercial banks and
credit unions and mortgage bankers. Pass-through securities issued by Fannie
Mae are guaranteed as to timely payment of principal and interest by Fannie
Mae.
    

The principal Government guarantor of mortgage-backed securities is the
Government National Mortgage Association (GNMA). GNMA is a wholly-owned U.S.
Government corporation within the Department of Housing and Urban Development.
GNMA is authorized to guarantee, with the full faith and credit of the U.S.
Government, the timely payment of principal and interest on securities issued
by approved institutions and backed by pools of FHA-insured or VA-guaranteed
mortgages.

   
Commercial banks, savings and loan institutions, private mortgage insurance
companies, mortgage bankers and other secondary market issuers also create
pass-through pools of conventional residential mortgage loans. Pools created
by such non-governmental issuers generally offer a higher rate of interest
than Government and Government-related pools because there are no direct or
indirect Government guarantees of payments in the former pools. However,
timely payment of interest and principal of these pools is supported by
various forms of insurance or guarantees, including individual loan, title,
pool and hazard insurance purchased by the issuer. The insurance and
guarantees are issued by Governmental entities, private insurers and the
mortgage poolers. There can be no assurance that the private insurers can meet
their obligations under the policies. Mortgage- backed securities purchased
for the portfolios will, however, be rated of investment grade quality by
Moody's and/or Standard & Poor's or, if unrated, deemed by the Adviser to be
of investment grade quality.

It is expected that Governmental or private entities may create mortgage loan
pools offering pass-through investments in addition to those described above.
The mortgages underlying these securities may be alternative mortgage
instruments, that is, mortgage instruments whose principal or interest payment
may vary or whose terms to maturity may be shorter than previously customary.
As new types of mortgage-backed securities are developed and offered to
investors, the portfolios will, consistent with their investment objective and
policies, consider making investments in such new types of securities.
    

                      STRIPPED MORTGAGE-BACKED SECURITIES

Stripped mortgage-backed securities ("SMBS") are derivative multiclass
mortgage securities. SMBS may be issued by agencies or instrumentalities of
the U.S. Government or by private originators of, or investors in, mortgage
loans, including savings and loan associations, mortgage banks, commercial
banks, investment banks and special purpose entities of the foregoing.

   
SMBS are usually structured with two classes that receive different
proportions of the interest and principal distributions on a pool of mortgage
assets. A common type of SMBS will have one class receiving some of the
interest and most of the principal from the mortgage assets, while the other
class will receive most of the interest and the remainder of the principal. In
the most extreme case, one class will receive all of the interest (the
interest-only or "IO" class), while the other class will receive all of the
principal (the principal-only or "PO" class). The yield to maturity on an IO
class is extremely sensitive to the rate of principal payments (including
prepayments) on the related underlying mortgage assets, and a rapid rate of
principal payments may have a material adverse effect on a portfolio yield to
maturity from these securities. If the underlying mortgage assets experience
greater than anticipated prepayments of principal, a portfolio may fail to
fully recoup its initial investment in these securities even if the security
is in one of the highest rating categories.

SMBS are generally purchased and sold by institutional investors through
several investment banking firms acting as brokers or dealers. Certain of
these securities may be deemed "illiquid" and subject to a portfolio's
limitations on investment in illiquid securities.
    



                                      16
<PAGE>

                          U.S. GOVERNMENT SECURITIES

The term "U.S. Government securities" refers to a variety of securities which
are issued or guaranteed by the United States Government, and by various
instrumentalities which have been established or sponsored by the United
States Government. U.S. Treasury securities are backed by the "full faith and
credit" of the United States.

   
Agency Securities: Securities issued or guaranteed by federal agencies and
U.S. Government sponsored instrumentalities may or may not be backed by the
full faith and credit of the United States. In the case of securities not
backed by the full faith and credit of the United States, the investor must
look principally to the agency or instrumentality 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 commitment. Agencies which are backed by the full faith and
credit of the United States include the Export Import Bank, Farmers Home
Administration, Federal Financing Bank, and others. Certain debt issued by
Resolution Funding Corporation has both its principal and interest backed by
the full faith and credit of the U.S. Treasury in that its principal is
defeased by U.S. Treasury zero coupon issues, while the U.S. Treasury is
explicitly required to advance funds sufficient to pay interest on it, if
needed. Certain agencies and instrumentalities, such as the Government
National Mortgage Association, are, in effect, backed by the full faith and
credit of the United States through provisions in their charters that they may
make "indefinite and unlimited" drawings on the Treasury, if needed to service
its debt. Debt from certain other agencies and instrumentalities, including
the Federal Home Loan Bank and Fannie Mae, are not guaranteed by the United
States, but those institutions are protected by the discretionary authority of
the U.S. Treasury to purchase certain amounts of their securities to assist
the institution in meeting its debt obligations. Finally, other agencies and
instrumentalities, such as the Farm Credit System and the Federal Home Loan
Mortgage Corporation, are federally chartered institutions under Government
supervision, but their debt securities are backed only by the credit
worthiness of those institutions, not the U.S. Government.
    

Some of the U.S. Government agencies that issue or guarantee securities
include the Export-Import Bank of the United States, Farmers Home
Administration, Federal Housing Administration, Maritime Administration, Small
Business Administration and The Tennessee Valley Authority.

   
An instrumentality of the U.S. Government is a Government agency organized
under federal charter with Government supervision. Instrumentalities issuing
or guaranteeing securities include, among others, Federal Home Loan Banks, the
Federal Land Banks, Central Bank for Cooperatives, Federal Intermediate Credit
Banks and Fannie Mae.
    

                               ZERO COUPON BONDS

   
Zero Coupon Bonds is a term used to describe notes and bonds which have been
stripped of their unmatured interest coupons, or the coupons themselves, and
also receipts or certificates representing interest in such stripped debt
obligations and coupons. The timely payment of coupon interest and principal
on these instruments remains guaranteed by the issuer.

A Zero Coupon Bond does not pay interest. Instead, it is issued at a
substantial discount to its "face value"-- what it will be worth at maturity.
The difference between a security's issue or purchase price and its face value
represents the imputed interest an investor will earn if the security is held
until maturity. For tax purposes, a portion of this imputed interest is deemed
as income received by zero coupon bondholders each year. The Fund, which
expects to qualify as a regulated investment company, intends to pass along
such interest as a component of the portfolio's distributions of net
investment income.
    

                                      17
<PAGE>

   
Zero Coupon Bonds may offer investors the opportunity to earn higher yields
than those available on other bonds of similar maturity. However, zero coupon
bond prices may also exhibit greater price volatility than ordinary debt
securities because of the manner in which their principal and interest is
returned to the investor.

Zero Coupon Treasury Bonds are sold under a variety of different names, such
as: Certificate of Accrual on Treasury Securities (CATS), Treasury Receipts
(TRS), Separate Trading of Registered Interest and Principal of Securities
(STRIPS) and Treasury Investment Growth Receipts (TIGERS).
    

                       EURODOLLAR AND YANKEE OBLIGATIONS

   
Each portfolio, except the Domestic Fixed Income Portfolio, can invest in
Eurodollar and Yankee obligations. Eurodollar bank obligations are
dollar-denominated certificates of deposit and time deposits issued outside
the U.S. capital markets by foreign branches of U.S. banks and by foreign
banks. Yankee bank obligations are dollar-denominated obligations issued in
the U.S. capital markets by foreign banks.
    

Eurodollar and Yankee obligations are subject to the same risks that pertain
to domestic issues, notably credit risk, market risk and liquidity risk.
Additionally, Eurodollar (and to a limited extent, Yankee) obligations are
subject to certain sovereign risks. One such risk is the possibility that a
sovereign country might prevent capital, in the form of dollars, from flowing
across their borders. Other risks include: adverse political and economic
developments; the extent and quality of government regulation of financial
markets and institutions; the imposition of foreign withholding taxes, and the
expropriation or nationalization of foreign issuers. However, Eurodollar and
Yankee obligations held in the Cash Reserves Portfolio will undergo the same
credit analysis as domestic issues in which the Cash Reserves Portfolio
invests, and will have at least the same financial strength as the domestic
issuers approved for the Cash Reserves Portfolio.

                                  BRADY BONDS

A portion of certain of the Fund's fixed-income investments may be invested in
certain debt obligations customarily referred to as "Brady Bonds", which are
created through the exchange of existing commercial bank loans to foreign
entities for new obligations in connection with debt restructuring under a
plan introduced by former U.S. Secretary of the Treasury, Nicholas F. Brady
(the "Brady Plan").

   
Brady Bonds have been issued fairly recently, and, accordingly, do not have a
long payment history. They may be collateralized or uncollateralized and
issued in various currencies (although most are dollar-denominated) and they
are actively traded in the over-the-counter secondary market.

Dollar-denominated, collateralized Brady Bonds, which may be fixed rate par
bonds or floating rate discount bonds, are generally collateralized in full as
to principal due at maturity by U.S. Treasury zero coupon obligations which
have the same maturity as the Brady Bonds. Interest payments on these Brady
Bonds generally are collateralized by cash or securities in an amount that, in
the case of fixed rate bonds, is equal to at least one year of rolling
interest payments or, in the case of floating rate bonds, initially is equal
to at least one year's rolling interest payments based on the applicable
interest rate at that time and is adjusted at regular intervals thereafter.
Certain Brady Bonds are entitled to "value recovery payments" in certain
circumstances, which in effect constitute supplemental interest payments but
generally are not collateralized. Brady Bonds are often viewed as having three
or four valuation components: (i) the collateralized repayment of principal at
final maturity; (ii) the collateralized interest payments; (iii) the
uncollateralized interest payments; and (iv) any uncollateralized repayment of
principal at maturity (these uncollateralized amounts constitute the "residual
risk"). In the event of a default with respect to collateralized Brady Bonds
as a result of which the payment obligations of the issuer are accelerated,
the U.S. Treasury zero coupon obligations held as collateral for the
    



                                      18
<PAGE>

   
payment of principal will not be distributed to investors, nor will such
obligations be sold and the proceeds distributed. The collateral will be held
by the collateral agent to the scheduled maturity of the defaulted Brady
Bonds, which will continue to be outstanding, at which time the face amount of
the collateral will equal the principal payments which would have then been
due on the Brady Bonds in the normal course. In addition, in light of the
residual risk of the Brady Bonds and, among other factors, the history of
default with respect to commercial bank loans by public and private entities
of countries issuing Brady Bonds, investments in Brady bonds are to be viewed
as speculative.
    


                            CASH RESERVES PORTFOLIO

A-1 and Prime-1 Commercial Paper Ratings: Commercial paper rated A-1 by
Standard & Poor's has the following characteristics: (1) liquidity ratios are
adequate to meet cash requirements; (2) long-term senior debt is rated "A" or
better; (3) the issuer has access to at least two additional channels of
borrowing; (4) basic earnings and cash flow have an upward trend with
allowance made for unusual circumstances; (5) typically, the issuer's industry
is well established and the issuer has a strong position within the industry;
and (6) the reliability and quality of management are unquestioned. Relative
strength or weakness of the above factors determine whether the issuer's
commercial paper is A-1, A-2, or A-3. The rating Prime-1 is the highest
commercial paper rating assigned by Moody's. Among the factors considered by
Moody's in assigning ratings are the following: (1) evaluation of the
management of the issuer; (2) economic evaluation of the issuer's industry or
industries and the appraisal of speculative-type risks which may be inherent
in certain areas; (3) evaluation of the issuer's products in relation to
competition and customer acceptance; (4) liquidity; (5) amount and quality of
long-term debt; (6) trend of earnings over a period of ten years; (7)
financial strength of a parent company and the relationships which exist with
the issuer; and (8) recognition by the management of obligations which may be
present or may arise as a result of public interest questions and preparations
to meet such obligations.

                              TAX CONSIDERATIONS

   
In order for a portfolio to continue to qualify for federal income tax
treatment as a regulated investment company, at least 90% of its gross income
for a taxable year must be derived from qualifying income; i.e., dividends,
interest, income derived from loans of securities, and gains from the sale of
securities or foreign currencies, or other income derived with respect to its
business of investing in such securities or currencies. It is anticipated that
any net gain realized from the closing out of futures contracts will be
considered gain from the sale of securities and therefore be qualifying income
for purposes of the 90% requirement. In addition, (i) a portfolio must
distribute annually to its shareholders at least the sum of 90% of its net
interest income excludable from gross income plus 90% of its investment
company taxable income; (ii) at the close of each quarter of a portfolio's
taxable year, at least 50% of its total assets must be represented by cash and
cash items, vs. government securities, securities of other regulated
investment companies and such other securities with limitations; and (iii) at
the close of each quarter of a portfolio's taxable year, not more than 25% of
the value of its assets may be invested in securities of any one issuer, or of
two or more issuers engaged in same or similar businesses if the portfolio
owns at least 20% of the voting power of such issuers.

Each portfolio of the Fund will distribute to shareholders annually any net
capital gains which have been recognized for federal income tax purposes
including unrealized gains at the end of the portfolio's fiscal year on
futures transactions. Such distributions will be combined with distributions
of capital gains 
    



                                      19
<PAGE>

   
realized on the portfolio's other investments and shareholders will be advised
of the nature of the payments.

The Tax Payer Relief Act of 1997 provides various capital gains rates which
pertain to shareholders who are individuals. Each portfolio will, therefore,
designate distributions derived from capital gains of the portfolio (whether
such distributions are paid in cash or additional shares) as a "20% rate gain
distribution" or a "28% rate gain distribution" in accordance with guidance
issued by the Internal Revenue Service. The Fund will notify shareholders
annually as to the federal tax classification of dividends and distributions
paid by a portfolio including, but not limited to notifying individuals as to
the amount of capital gain distributions subject to the 20% and 28% federal
capital gain tax rates. Distributions of dividends or capital gains may also
be subject to state and local taxes.

Some of the options, futures contracts, forward contracts, and swap contracts
entered into by the portfolios may be "Section 1256 contracts." Section 1256
contracts held by a portfolio at the end of its taxable year (and, for
purposes of the 4% excise tax, on certain other dates as prescribed under the
Code) are "marked to market" with unrealized gains or losses treated as though
they were realized. Any gains or losses, including "marked to market" gains or
losses, on Section 1256 contracts other than forward contracts are generally
60% long-term and 40% short-term capital gains or losses ("60/40") although
all foreign currency gains and losses from such contracts may be treated as
ordinary in character absent a special election.

Generally, hedging transactions and certain other transactions in options,
futures, forward contracts and swap contracts undertaken by a portfolio, may
result in "straddles" for U.S. federal income tax purposes. The straddle rules
may affect the character of gain or loss realized by a portfolio. In addition,
losses realized by a portfolio on positions that are part of a straddle may be
deferred under the straddle rules, rather than being taken into account in
calculating the taxable income for the taxable year in which such losses are
realized. Because only a few regulations implementing the straddle rules have
been promulgated, the tax consequences of transactions in options, futures,
forward contracts, and swap agreements to a portfolio are not entirely clear.
The transactions may increase the amount of short-term capital gain realized
by a portfolio. Short-term capital gain is taxed as ordinary income when
distributed to shareholders.

A portfolio may make one or more of the elections available under the Code
which are applicable to straddles. If a portfolio makes any of the elections,
the amount, character, and timing of the recognition of gains or losses from
the affected straddle positions will be determined under rules that vary
according to the elections made. The rules applicable under certain of the
elections operate to accelerate the recognition of gains or losses from the
affected straddle positions.

Because application of the straddle rules may affect the character of gains or
losses, defer losses and/or accelerate the recognition of gains or losses from
the affected straddle positions, the amount which must be distributed to
shareholders, and which will be taxed to shareholders as ordinary income or
long-term capital gain, may be increased or decreased substantially as
compared to a portfolio that did not engage in such hedging transactions.

The Taxpayer Relief Act of 1997 provides constructive sales treatment for
appreciated financial positions such as stock which has increased in value in
the hands of a portfolio. Under this constructive sales treatment, the
portfolio may be treated as having sold such stock and be required to
recognize gain if it enters into a short sale, an offsetting notional
principal contract, a futures or forward contract, or a similar transaction
with respect to such stock or substantially identical property.

Each portfolio intends to declare and pay dividends and capital gain
distributions so as to avoid imposition of the federal excise tax. To do so,
each portfolio expects to distribute an amount at least
    




                                      20
<PAGE>

   
equal to (i) 98% of its calendar year ordinary income, (ii) 98% of its capital
gains net income for the one-year period ending October 31st, and (iii) 100%
of any undistributed ordinary and capital gain net income from the prior year.

Although, income received on direct U.S. Government obligations is taxable at
the Federal level, such income is exempt from tax at the state level when
received directly, and may be exempt, depending on the state, when received by
a shareholder. Each portfolio will inform shareholders annually of the
percentage of income and distributions derived from direct U.S. Government
obligations. Shareholders should consult their tax advisers to determine
whether any portion of dividends received from the portfolio is considered tax
exempt in their particular states.

Any gain or loss recognized on a sale or redemption of shares of a Fund by a
Shareholder who is not a dealer in securities will generally be treated as
long-term capital gain or loss if the shares have been held for more than
eighteen months, mid-term if the shares have been held for over one year but
not for over eighteen months, and short-term if for a year or less. Long-term
capital gains are currently taxed at a maximum rate of 20%; mid-term capital
gains are currently taxed at a maximum rate of 28%; and short-term gains are
currently taxed at ordinary income tax rates. If shares held for six months or
less are sold or redeemed for a loss, two special rules apply: First, if
shares on which a net capital gain distribution has been received are
subsequently sold or redeemed, and such shares have been held for six months
or less, any loss recognized will be treated as long-term capital loss to the
extent of the long-term capital gain distributions. Second, any loss
recognized by a Shareholder upon the sale or redemption of shares of a
municipal portfolio held for six months or less will be disallowed to the extent
of any exempt-interest dividends received by the Shareholder with respect to
such shares.

Foreign Income Taxes: Investment income received by the portfolios from
sources within foreign countries may be subject to foreign income taxes
withheld at the source. The U.S. has entered into Tax Treaties with many
foreign countries which would entitle the portfolios to a reduced rate of tax
or exemption from tax on such income. It is impossible to determine the
effective rate of foreign tax in advance since the amount of the portfolios'
assets to be invested within various countries is not known. The portfolios
intend to operate so as to qualify for treaty-reduced rates of tax where
applicable.

If more than 50% of a portfolio's assets is represented by foreign securities,
then such portfolio may file an election with the Internal Revenue Service to
pass through to shareholders the amount of foreign income taxes paid by such
portfolio. A portfolio will make such an election only if it is deemed to be
in the best interests of such shareholders.

If a portfolio makes the above-described election, the portfolio will not be
allowed a deduction or a credit for foreign taxes it paid and the amount of
such taxes will be treated as a dividend paid by the portfolio. The
shareholders of the portfolios will be required to: (i) include in gross
income, even though not actually received, their respective pro rata share of
foreign taxes paid by the portfolio; (ii) treat their pro rata share of
foreign taxes as paid by them; (iii) treat as gross income from sources within
the respective foreign countries, for purposes of the foreign tax credit,
their pro rata share of such foreign taxes and their pro rate share of any
dividend paid by the portfolio which represents income from sources within
foreign countries; and (iv) either deduct their pro rata share of foreign
taxes in computing their taxable income or use it within the limitations set
forth in the Internal Revenue Code (the "Code") as a foreign tax credit
against U.S. income taxes (but not both). In no event shall a shareholder be
allowed a foreign tax credit if the shareholder holds shares in a portfolio
for 15 days or less during the 30-day period beginning on the date which is 15
days before the date on which such shares become ex-dividend with respect to
such dividends.
    

                                      21
<PAGE>

   
Each shareholder of a portfolio will be notified within 60 days after the
close of each taxable (fiscal) year of the Fund if the Foreign taxes paid by
the portfolio will pass through for that year, and, if so, the amount of each
shareholder's pro rata share (by country) of (i) the foreign taxes paid, and
(ii) the portfolio's gross income from foreign sources. The notice from the
portfolio to the shareholders will also include the amount of foreign taxes
paid by the portfolio which are not allowable as a foreign tax credit because
the portfolio did not hold the foreign securities for more than 15 days owing
the 30-day period beginning on the date which is 15 days before the date on
which the security becomes ex-dividend with respect to the foreign source
dividend or because and to the extent that the recipient of the dividend is
under an obligation to make related payments with respect to positions in
substantially similar or related property. Shareholders who are not liable for
federal income taxes, such as retirement plans qualified under Section 401 of
the Code, will not be affected by any such "pass-through" of foreign tax
credits.

Special Tax Considerations for the Municipal and PA Municipal Portfolios: Each
of the Municipal and PA Municipal Portfolio intends that at the close of each
quarter of its taxable year, at least 50% of the value of the portfolio's
total assets will consist of obligations the interest on which is excludable
from gross income (i.e., municipal bonds and notes), so that it may pay
"exempt-interest" dividends to shareholders. Exempt- interest dividends, which
are defined in the Code, are excluded from a shareholder's gross income for
federal income tax purposes, but may nevertheless be subject to the
alternative minimum tax (imposed at a rate of 26%-28% in the case of
non-corporate taxpayers and at the rate of 20% in the case of corporate
taxpayers). A shareholder may, however, lose the federal tax-exempt status of
the accrued income of the portfolio if the shareholder redeems its shares
before a dividend has been declared. Exempt-interest dividends received by
shareholders from the above-referenced portfolios may be subject to state and
local taxes, although some states allow a shareholder to exclude that portion
of a portfolio's tax-exempt income which is accountable to municipal
securities issued within the shareholder's state of residence.

These portfolios may invest in private activity municipal securities, the
interest on which is subject to the federal alternative minimum tax for
corporations and individuals and the federal environmental tax for
corporations only. These portfolios may not be an appropriate investment for
persons who are "substantial users" (or persons related to "substantial
users") of facilities financed by industrial development bonds or private
activity bonds. A "substantial user" is defined generally to include certain
persons who regularly use in a trade or business or facility financed from the
proceeds of industrial development bonds or private activity bonds. Such
persons should consult their tax advisers before purchasing shares.

Any distributions received by individual shareholders which are derived from
capital gains of the portfolio will be designated by either portfolio as a
"20% rate gain distribution" or a "28% rate gain distribution" in accordance
with guidance issued by the Internal Revenue Service.

Interest on indebtedness incurred or continued by a shareholder in order to
purchase or carry shares of these portfolios is not deductible for federal
income tax purposes to the extent that it relates to exempt-interest dividends
distributed to the shareholder during the taxable year.
    

                              PURCHASE OF SHARES

   
Each portfolio reserves the right in its sole discretion (i) to suspend the
offering of its shares (ii) to reject purchase orders, and (iii) to reduce or
waive the minimum for initial and subsequent investments. The officers of the
Fund may from time to time waive the minimum initial and subsequent investment
requirements in connection with investments in the Fund by employees of the
Adviser and its affiliates.
    

                                      22
<PAGE>

                             REDEMPTION OF SHARES

   
Each portfolio may suspend redemption privileges or postpone the date of
payment (i) during any period that the New York Stock Exchange ("NYSE") is
closed, or trading on the NYSE is restricted as determined by the SEC, (ii)
during any period when an emergency exists as defined by the rules of the SEC
as a result of which it is not reasonably practicable for a portfolio to
dispose of securities owned by it, or fairly to determine the value of its
assets, and (iii) for such other periods as the SEC may permit.

The Fund has made an election with the SEC pursuant to Rule 18f-1 under the
1940 Act to pay in cash all redemptions requested by any shareholder of record
limited in amount during any 90-day period to the lesser of $250,000 or 1% of
the net assets of the portfolio at the beginning of such period. Such
commitment is irrevocable without the prior approval of the SEC. Redemptions
in excess of the above limits may be paid in whole or in part in investment
securities or in cash, as the Trustees may deem advisable; however, payment
will be made wholly in cash unless the Trustees believe that economic or
market conditions exist which would make such a practice detrimental to the
best interests of the Fund. If redemptions are paid in investment securities,
such securities will be valued as set forth in the Fund's Prospectus under
"Valuation of Shares" and a redeeming shareholder would normally incur
brokerage expenses in converting these securities to cash.

No charge is made by a portfolio for redemptions. Redemption proceeds may be
more or less than the shareholder's cost depending on the market value of the
securities held by the portfolio.

                       TRANSACTIONS WITH BROKER/DEALERS

The Fund has authorized one or more brokers to accept on its behalf purchase
and redemption orders. These brokers are authorized to designate other
intermediaries to accept purchase and redemption orders on the Fund's behalf.
For purposes of determining the purchase price of shares, the Fund will be
deemed to have received a purchase or redemption order when an authorized
broker, or if applicable, a broker's authorized designee, accepts the order.
In other words, orders will be priced at the net asset value net computed
after such orders are accepted by an authorized broker or the broker's
authorized designee.
    

                             SHAREHOLDER SERVICES

Exchange Privilege

   
The exchange privilege is only available with respect to portfolios that are
qualified for sale in a shareholder's state. Exchange requests should be sent
to MAS Funds, c/o Miller Anderson & Sherrerd, LLP, One Tower Bridge, West
Conshohocken, PA 19428-0868. Any such exchange will be based on the respective
net asset values of the shares involved. Before making an exchange, a
shareholder should consider the investment objectives of the portfolio to be
purchased. Exchange requests may be made either by mail or telephone.
Telephone exchanges (referred to as "expedited exchanges") will be accepted
only if the certificates for the shares to be exchanged are held by the Fund
for the account of the shareholder and the registration of the two accounts
are identical. Requests for expedited exchanges received prior to the time at
which each portfolio determines its net asset value, as described in the
Prospectus will be processed as of the close of business on the same day.
Requests received after these times will be processed on the next business
day. Expedited exchanges may also be subject to limitations as to amounts or
frequency, and to other restrictions established by the Board of Trustees to
assure that such exchanges do not disadvantage the Fund and its shareholders.
The officers of the Fund reserve the right not
    

                                      23
<PAGE>

to accept any request for an exchange when, in their opinion, the exchange
privilege is being used as a tool for market timing.

   
For federal income tax purposes, an exchange between portfolios of the Fund is
a taxable event, and, accordingly, a capital gain or loss may be realized. It
is likely, therefore, that a capital gain or loss would be realized on an
exchange between portfolios; you may want to consult your tax adviser for
further information in this regard. The exchange privilege may be modified or
terminated at any time.
    

Transfer of Shares

   
Shareholders may transfer shares of the Fund's portfolios to another person by
written request to the Client Services Group at the address noted above. The
request should clearly identify the account and number of shares to be
transferred and include the signature of all registered owners and all share
certificates, if any, which are subject to the transfer. The signature on the
letter of request, the share certificate or any stock power must be guaranteed
in the same manner as described under "Redemption of Shares." As in the case
of redemptions, the written request must be received in good order before any
transfer can be made.
    

                            INVESTMENT LIMITATIONS

   
Each portfolio of the Fund is subject to the following restrictions which are
fundamental policies and may not be changed without the approval of the lesser
of: (1) at least 67% of the voting securities of the portfolio present at a
meeting if the holders of more than 50% of the outstanding voting securities
of the portfolio are present or represented by proxy, or (2) more than 50% of
the outstanding voting securities of the portfolio.

As a matter of fundamental policy, each portfolio will not:
    

(1) invest in physical commodities or contracts on physical commodities;

   
(2) purchase or sell real estate, although it may purchase and sell securities
of companies which deal in real estate, other than real estate limited
partnerships, and may purchase and sell marketable securities which are
secured by interests in real estate;
    

(3) make loans except: (i) by purchasing debt securities in accordance with
its investment objectives and policies, or entering into repurchase
agreements, subject to the limitations described in non-fundamental limitation
(7), below, (ii) by lending its portfolio securities, and (iii) by lending
portfolio assets to other portfolios of the Fund, so long as such loans are
not inconsistent with the 1940 Act, or the rules and regulations, or
interpretations or orders of the SEC thereunder;

   
(4) with respect to 75% of its assets, purchase a security if, as a result, it
would hold more than 10% (taken at the time of such investment) of the
outstanding voting securities of any issuer (this restriction is not
applicable to the Global Fixed Income, International Fixed Income, Advisory
Foreign Fixed Income or the Emerging Markets Value Portfolios);

(5) with respect to 75% of its assets, purchase securities of any issuer if,
as a result, more than 5% of the portfolio's total assets, taken at market
value at the time of such investment, would be invested in the securities of
such issuer except that this restriction does not apply to securities issued
or guaranteed by the U.S. Government or its agencies or instrumentalities
(this restriction does not apply to the Global Fixed 
    



                                      24
<PAGE>

Income, International Fixed Income, Advisory Foreign Fixed Income or the
Emerging Markets Value Portfolios);

   
(6) borrow money, except (i) as a temporary measure for extraordinary or
emergency purposes, and (ii) in connection with reverse repurchase agreements,
provided that (i) and (ii) in combination do not exceed 33 1/3% of the
portfolio's total assets (including the amount borrowed) less liabilities
(exclusive of borrowings);

(7) underwrite the securities of other issuers (except to the extent that the
fund may be deemed to be an underwriter within the meaning of the Securities
Act of 1933 in connection with the disposition of restricted securities); and

(8) acquire any securities of companies within one industry, if, as a result
of such acquisition, more than 25% of the value of the portfolio's total
assets would be invested in securities of companies within such industry;
provided, however that (i) there shall be no limitation on the purchase of
obligation issued or guaranteed by the U.S. Government, its agencies or
instrumentalities; (ii) the Cash Reserves Portfolio may invest without
limitation in certificates of deposit or bankers' acceptances of domestic
banks; (iii) utility companies will be divided according to their services,
for example, gas, gas transmission, electric and telephone will each be
considered a separate industry; (iv) financial service companies will be
classified according to the end users of their services, for example,
automobile finance, bank finance and diversified finance will each be
considered a separate industry; (v) asset-backed securities will be classified
according to the underlying assets securing such securities; and (vi) the
Mortgage-Backed Securities and Advisory Mortgage Portfolios will concentrate
in mortgage-backed securities.

Each portfolio is also subject to the following restrictions which may be
changed by the Board of Trustees without shareholder approval.

As a matter of non-fundamental policy, no portfolio will:

(1) enter into futures contracts to the extent that each portfolio's
outstanding obligations to purchase securities under these contracts in
combination with its outstanding obligations with respect to options
transactions would exceed 50% of each portfolio's total assets, and will
maintain assets sufficient to meet its obligations under such contracts in a
segregated account with the custodian bank or will otherwise comply with the
SEC's position on asset coverage;
    

(2) write put or call options except to the extent described above in (1);

   
(3) purchase on margin, except for use of short-term credit as may be
necessary for the clearance of purchases and sales of securities, provided
that each portfolio may make margin deposits in connection with transactions
in options, futures, and options on futures;

(4) sell short unless, the portfolio (i) by virtue of its ownership of other
securities, has the right to obtain securities equivalent in kind and amount
to the securities sold and, if the right is conditional, the sale is made upon
the same conditions, or (ii) maintains in a segregated account on the books of
the Fund's custodian an amount that, when combined with the amount of
collateral deposited with the broker in connection with the short sale, equals
the current market value of the security sold short or such other amount as
the SEC or its staff may permit by rule, regulation, order or interpretation
(transactions in futures contracts and options, however, are not deemed to
constitute selling securities short);
    



                                      25
<PAGE>

   
(5) borrow money other than from banks or other portfolios of MAS Funds,
provided that a portfolio may borrow from banks or other portfolios of MAS
Funds so long as such borrowing is not inconsistent with the 1940 Act or the
rules, regulations, interpretations or orders of the SEC and its staff
thereunder; or purchase additional securities when borrowings exceed 5% of
total (gross) assets;

(6) pledge, mortgage or hypothecate assets in an amount greater than 50% of
its total assets, provided that each portfolio may segregate assets without
limit in order to comply with the requirements of Section 18(f) of the 1940
Act and applicable rules, regulations or interpretations of the SEC and its
staff;

(7) invest more than an aggregate of 15% of the net assets of the portfolio,
determined at the time of investment, in illiquid securities provided that
this limitation shall not apply to any investment in securities that are not
registered under the 1933 Act but that can be sold to qualified institutional
investors in accordance with Rule 144A under the 1933 Act and are determined
to be liquid securities under guidelines or procedures adopted by the Board of
Trustees;
    

(8) invest for the purpose of exercising control over management of any
company; and

(9) invest its assets in securities of any investment company, except as
permitted by the 1940 Act or the rules, regulations, interpretations or orders
of the SEC and its staff thereunder.

   
Unless otherwise indicated, if a percentage limitation on investment or
utilization of assets as set forth above is adhered to at the time an
investment is made, a later change in percentage resulting from changes in the
value or total cost of the portfolio's assets will not be considered a
violation of the restriction, and the sale of securities will not be required.
    

                            MANAGEMENT OF THE FUND

Trustees and Officers

The Fund's officers, under the supervision of the Board of Trustees, manage
the day-to-day operations of the Fund. The Trustees set broad policies for the
Fund and choose its officers. The following is a list of the Trustees and
officers of the Fund and a brief statement of their present positions and
principal occupations during the past 5 years:

   
Thomas L. Bennett,* Chairman of the Board of Trustees; Managing Director,
Morgan Stanley; Portfolio Manager and member of the Executive Committee,
Miller Anderson & Sherrerd, LLP; Director, MAS Fund Distribution, Inc.;
formerly Director, Morgan Stanley Universal Funds, Inc.

Thomas P. Gerrity, Trustee; Dean and Reliance Professor of Management and
Private Enterprise, Wharton School of Business , University of Pennsylvania;
Director, Digital Equipment Corp.; Director, Sun Company, Inc.; Director,
Fannie Mae; Director, Reliance Group Holdings; Director, CVS Corporation;
Director, Union Carbide Corporation.
    

Joseph P. Healey, Trustee; Headmaster, Haverford School; formerly Dean, Hobart
College; Associate Dean, William & Mary College.

Joseph J. Kearns, Trustee; Vice President and Treasurer, The J. Paul Getty
Trust; Director, Electro Rent Corporation; Trustee, Southern California Edison
Nuclear Decommissioning Trust; Director, The Ford Family Foundation.

                                      26
<PAGE>

Vincent R. McLean, Trustee; Director, William Penn Life Insurance Company of New
York; formerly Executive Vice President, Chief Financial Officer, Director and
Member of the Executive Committee of Sperry Corporation (now part of Unisys
Corporation).

C. Oscar Morong, Jr., Trustee; Managing Director, Morong Capital Management;
Director, Ministers and Missionaries Benefit Board of American Baptist
Churches, The Indonesia Fund, The Landmark Funds; formerly Senior Vice
President and Investment Manager for CREF, TIAA-CREF Investment Management,
Inc.

   
*Trustee Bennett is deemed to be an "interested person" of the Fund as that
term is defined in the 1940 Act.
    

- ------------------------------------------------------------------------------

James D. Schmid, President, MAS Funds; Principal, Morgan Stanley; Head of
Mutual Funds, Miller Anderson & Sherrerd, LLP; Director, MAS Fund
Distribution, Inc., Chairman of the Board of Directors, The Minerva Fund,
Inc.; formerly Vice President, The Chase Manhattan Bank.

Lorraine Truten, CFA, Vice President, MAS Funds; Principal, Morgan Stanley;
Head of Mutual Fund Services, Miller Anderson & Sherrerd, LLP; President, MAS
Fund Distribution, Inc.

   

    

John H. Grady, Jr., Secretary, MAS Funds; Partner, Morgan, Lewis & Bockius
LLP; formerly Attorney, Ropes & Gray.

Remuneration of Trustees and Officers

   
The Fund pays each Trustee, who is not also an officer or interested person, a
fee for each Board of Trustees Meeting attended plus travel and other expenses
incurred in attending such meetings. Trustees who are also officers or
interested persons receive no remuneration for their service as Trustees. The
Fund's officers and employees are paid by the Adviser or Sub-Administrator.

The Fund maintains an unfunded Deferred Compensation Plan ("Plan") which
allows each independent Trustee to defer payment of his or her retainer and
fees to a later date. The Fund's policy is for each Trustee to defer at least
twenty-five percent (25%) of his or her retainer and fees received annually
from the Fund. To that end, the Plan requires that each Eligible Trustee
(defined by the Plan as a member of the Board of Trustees who is not an
"interested person" of the Fund, as such term is defined under Section
2(a)(19) of the 1940 Act) defer his or her entire retainer, which is deemed a
deferral of twenty-five percent (25%) of the Trustee's retainer and fees
received from the Fund for the year. The Plan also permits the Eligible
Trustee to defer all, or a portion, of the fees received for attending
meetings of the Board of Trustees throughout the year. Amounts deferred by
each Eligible Trustee are credited with a return equal to what those amounts
would have received if they had been invested in portfolios of the Fund
selected by that Trustee. Any deferred amounts will not be available to
Eligible Trustees for a period of three (3) or more years and distributions
may not be deferred beyond the Eligible Trustee's membership on the Board of
Trustees. Distributions to an Eligible Trustee are either in the form of a
lump sum or equal annual installments over a period of five (5) years and
commence within ninety (90) days after the last date during the deferral
period on which the Fund makes a valuation of the Eligible Trustee's deferred
    



                                      27
<PAGE>

   
compensation. The Fund intends that the Plan shall be maintained at all times
on an unfunded basis for federal income tax purposes under the Internal
Revenue Code of 1986. The rights of an Eligible Trustee and the beneficiaries
to the amounts held under the Plan are unsecured and such amounts are subject
to the claims of the creditors of the Fund. The Plan became effective May 23,
1996. There were no payments under the plan during the fiscal year ended
September 30, 1997.

As of the fiscal year ended September 30, 1997, the Trustees and Officers of
the Fund owned, in the aggregate, less than 1% of the outstanding shares of
the Fund. The aggregate compensation paid by the Fund to each of the Trustees
during its fiscal year ended September 30, 1997 is set forth below.
<TABLE>
<CAPTION>

                                 Aggregate             Pension or Benefits
                             Compensation from          Accrued as Part of         Total Compensation
Name of Trustee                  the Fund#                Fund Expenses               from the Fund
- ---------------                  ---------                -------------               -------------
<S>                                  <C>                        <C>                         <C>
Thomas L. Bennett*                  -0-                        -0-                         -0-
Thomas P. Gerrity                $57,000##                   $64,942                     $57,000
Joseph P. Healey                 $57,000##                   $30,173                     $57,000
Joseph J. Kearns                 $57,000##                   $60,102                     $57,000
C. Oscar Morong, Jr.             $57,000##                   $89,534                     $57,000
Vincent R. McLean                $57,000##                   $96,238                     $57,000

</TABLE>
*Trustee Bennett is deemed to be an "interested person" of the Fund as that
term is defined in the 1940 Act.
    
# Includes amounts deferred from quarterly meeting fees at the election of
Trustees under the Deferred Compensation Plan.

## In addition, each Trustee has deferred his retainer of $12,000 under the
Deferred Compensation Plan.

Principal Holders of Securities

   
As of January 5, 1998 following persons owned of record or beneficially 5% or
more of the shares of a portfolio:

Equity Portfolio: Los Angeles County Deferred Compensation & Thrift Plan,
Englewood, CO, 7.4%.

Value Portfolio: Charles Schwab & Co., Inc., Special Custody Account for the
Exclusive Benefit of Customers, San Francisco, CA, 13.7%; Donaldson Lufkin &
Jenrette, Jersey City, NJ, 6.0%.
    

Small Cap Value Portfolio: The J. Paul Getty Trust, c/o The Northern Trust
Company, Chicago, IL, 10.6%; The Northern Trust Company, FBO Silicon Graphics,
Chicago, IL, 9.5%; Fishnet & Company, FBO The Hearst Foundation, Boston, MA,
5.1%.



                                      28
<PAGE>

   
Mid Cap Growth Portfolio: The J. Paul Getty Trust, c/o The Northern Trust
Company, Chicago, IL, 23.5%; Morgan Stanley, c/o MAS Team, Boston, MA, 6.2%;
MAC & Co., Pittsburgh, PA, 5.4%.

Domestic Fixed Income Portfolio: Fleet National Bank, Rochester, NY, 11.7%;
The Philadelphia Orchestra Unrestricted Endowment Fund, Philadelphia, PA,
11.0%; Saxon & Company, FBO Weirton Medical Center Retirement Income Plan,
Philadelphia, PA, 9.2%; Strafe & Co., Marion General Hospital Retirement Plan,
Westerville, OH, 9.0%; Paintmakers Money Accumulation Pension Plan-B,
Portland, OR, 8.6%; Patterson & Co., c/o CoreStates Bank, N.A., Philadelphia,
PA, 6.8%; Key Trust Danis Industries, Cleveland, OH, 6.2%; Delta Dental Plan
of NH, Inc., Concord, NH, 5.9%.

Cash Reserves Portfolio: The Northern Trust Company, Chicago, IL, 32.3%; The
Taft School, Watertown, CT, 13.1%; Skadden ARPS Slate Meagher & Flom LLP, New
York, NY, 11.2%; Association for Information and Image Management, Silver
Spring, MD, 5.2%.

International Equity Portfolio: Western Metal Industry, c/o Miller Andersen &
Sherrerd, West Conshohocken, PA, 11.8%; Ministers & Missionaries Benefit Board
of American Baptist Churches, New York, NY, 11.0%; Carnegie Corporation of New
York, New York, NY, 6.8%; Puerto Rico Telephone Company Pension Plan, San
Juan, PR, 6.3%.

Fixed Income Portfolio II: Diocese of Camden, Camden, NJ, 10.4%; Bankers Trust
Co., Jersey City, NJ, 9.9%; Board of Trustees of Sheet Metal Workers Local
#100 Pension Plan, Suitland, MD, 9.5%; The Northern Trust Company, Chicago,
IL, 6.5%; Saul & Co., c/o First Union National Bank, Charlotte, NC, 6.2%.

High Yield Securities Portfolio: Charles Schwab & Co., Inc., Special Custody
Account for the Exclusive Benefit of Customers, San Francisco, CA, 8.5%;
Western Metal Industry, c/o Miller Andersen & Sherrerd, West Conshohocken, PA,
7.0%; Donaldson Lufkin & Jenrette, Jersey City, NJ, 6.2%; Armco Master Pension
Trust, Pittsburgh, PA, 5.3%.

Special Purpose Fixed Income Portfolio: Robertson Research Fund, Cold Spring
Harbor, NY, 5.2%.

Limited Duration Portfolio: Bankers Trust Company, Los Angeles, CA, 14.4%;
Boys & Girls Club of America Pension Trust, Atlanta, GA, 11.9%; Citibank, NA,
Fieldcrest Cannon Hourly Retirement Plan, Tampa, FL, 8.6%; Northern California
Bakery Drivers Security Fund, Alameda, CA 7.0%; Batrus & Co., c/o Bankers
Trust Company, New York, NY, 6.4%; Sheet Metal Workers Local # 100,
Washington, DC, 5.8%.

Mortgage-Backed Securities Portfolio: Northwestern University Investment
Department, Evanston, IL, 30.6%; John S. Donovan, Trustee for Cives
Corporation Savings and Profit-Sharing Retirement Trust, Roswell, GA, 25.3%;
The Paper Magic Group, Inc., Scranton, PA, 16.3%; Melhorn & Co., c/o PNC Bank
641 Teamster Pension, Philadelphia, PA 16.3%.

International Fixed Income Portfolio: Armco Master Pension Trust, Pittsburgh,
PA, 16.4%; 
    

                                      29
<PAGE>

   
CoreStates Bank, Childrens Hospital, Philadelphia, PA, 15.5%;
Northern Trust Co. as Custodian FBO: The J. Paul Getty Trust, Chicago, IL,
12.7%; The Skillman Foundation, Detroit, MI, 11.4%; Western Metal Industry
Pension Fund, c/o Miller Anderson & Sherrerd, West Conshohocken, PA, 9.6%;
Syntex (U.S.A.) Inc., Pension Trust, Palo Alto, CA, 6.7%; Chemical Bank as
Custodian for Smithsonian Institution, New York, NY, 6.1%; Wellesley College,
Wellesley, MA, 5.4%.

Emerging Markets Value Portfolio: Ministers & Missionaries Benefit Board of the
American Baptist Churches, New York, NY, 34.9%; Chemical Bank as Custodian for
Smithsonian Institution, New York, NY, 33.0%; Richard B. Worley, c/o Miller
Anderson & Sherrerd, West Conshohocken, PA, 7.7%; Philadelphia Orchestra
Association, Employee Pension & Retirement Plan, Philadelphia, PA 6.0%.

PA Municipal Portfolio: Kenneth B. Dunn & Pamela R. Dunn, Bala Cynwyd, PA
20.7%; R. & S. Roberts, Philadelphia, PA, 17.9%; Southwest National Bank of
PA, Greensburg, PA 11.7%; John J. F. Sherrerd, Bryn Mawr, PA, 9.3%; A. Morris
Williams, Jr. & Ruth W. Williams, Gladwyne, PA, 6.9%; Sanford C. Bernstein &
Co. Inc., FBO Cook Family Fund, New York, NY, 5.2%.

Municipal Portfolio: Bost &Co., FBO Union Electric Employees Benefit Trust for
Union Retirees, Pittsburgh, PA, 21.2%; Bost & Co., FBO Union Electric Employee
Benefit Trust for Management Retirees, Pittsburgh, PA, 12.2%; Batrus & Co.,
c/o Bankers Trust Company, New York, NY, 8.6%; Robert A. Fox, Jenkintown, PA,
8.4%; Jesse J. Thompson, Charlotte, NC, 8.4%.

Balanced Portfolio: Northern Trust Co., Chicago, IL, 30.2%; Wendel & Co.,
Trustee for A&P Savings Plan, New York, NY, 8.7%; Wendel & Co., c/o The Bank
of New York, New York, NY, 7.3%; Wendel & Co.,c/o The Bank of New York, New
York, NY, 6.7%; Wendel & Co., FAO Aramark Corporation, New York, NY, 5.9%;
Fidelity Investments Institutional Operations Co., Covington, KY, 6.5%.

Global Fixed Income Portfolio: The Charles A. Dana Foundation, Inc., New York,
NY, 31.1%; "All for Her" Fund, c/o Rosary Inc., Albany, NY, 13.9%;
Hudson-Webber Foundation, Detroit, MI, 13.0%; Abilene Christian University,
Abilene, TX, 10.2%; State Street Bank & Trust, Forest Oil Corporation Pension
Trust, Boston, MA, 8.4%; Rockefeller Family Fund Inc., New York, NY, 5.8%.

Intermediate Duration Portfolio: Southwest National Bank of PA, Greensburg,
PA, 30.8%; Bankers Trust Company, the Los Angeles Hotel-Restaurant Employer
Union Welfare Fund, Los Angeles, CA, 19.2%; Jaffe Foundation, Suffern, NY,
11.5%; Northumberland County Employees Retirement Fund, Altoona, PA, 8.1%;
Nyack Hospital, Nyack, NY, 6.5%.

Multi-Asset-Class-Portfolio: Albany Medical College, Albany, NY, 17.8%; Chase
Manhattan Bank, Milbank Tweed Hadley & McCloy Master trust, Brooklyn, NY,
11.5%; The Library Company of Philadelphia, Philadelphia, PA, 8.7%; Wachovia
Bank, NA, The W-S Foundation, Winston-Salem, NC, 5.3%; The National Center for
State Courts, Williamsburg, VA, 5.2%.

Advisory Foreign Fixed Income Portfolio: Minnesota State Board of Investments,
St. Paul, MN, 8.4%; Ford Motor Company Master Trust, Dearborn, MI, 7.0%;
Kaiser Foundation, Oakland, CA, 6.0%.
    

                                      30
<PAGE>

   
Mid Cap Value Portfolio: Charles Schwab & Co., Inc., Special Custody Account
for the Exclusive Benefit of Customers, San Francisco, CA, 10.7%; Georgetown
Memorial Hospital Funded Depreciation Account, Georgetown, SC, 9.3%; Fishnet &
Co., Boston, MA, 7.8%; The Chase Manhattan Bank, FAO Hearst Corporation, New
York, NY, 7.8%; Berklee College of Music, Boston, MA, 7.0%; The northern Trust
Company, FBO Morgan Stanley Plan, Chicago, IL, 5.3%.

Advisory Mortgage Portfolio: Ford Motor Company Master Trust, Dearborn, MI,
9.8%; Public School Teachers of Chicago, Chicago, IL, 5.1%.

Multi-Market Fixed Income Portfolio: Connelly Foundation, West Conshohocken,
PA, 73.4%; The Greenwall Foundation, New York, NY, 18.0%; Paperworkers Union
Local #286, Philadelphia, PA, 5.1%.

The persons listed above as owning 25% or more of the outstanding shares of
each portfolio may be presumed to "control" (as that term is defined in the
1940 Act) such portfolios. As a result, those persons would have the ability
to vote a majority of the shares of the portfolios on any matter requiring the
approval of shareholders of such portfolios.
    

                              DISTRIBUTION PLANS

   
The Fund's Distribution Plan provides that the Adviser Class Shares will pay
MAS Fund Distribution, Inc. (the "Distributor") an annualized fee of .25% of
the average daily net assets of each portfolio attributable to Adviser Class
Shares, which the Distributor can use to compensate broker/dealers and service
providers which provide distribution services to Adviser Class Shareholders or
their customers who beneficially own Adviser Class Shares.

The Fund has adopted the Distribution Plan in accordance with the provisions
of Rule 12b-1 under the 1940 Act which regulates circumstances under which an
investment company may directly or indirectly bear expenses relating to the
distribution of its shares. Continuance of the Plan must be approved annually
by a majority of the Trustees of the Fund and the Trustees who are not
"interested persons" of the Fund within the meaning of the 1940 Act. The Plan
requires that quarterly written reports of amounts spent under the Plan and
the purposes of such expenditures be furnished to and reviewed by the
Trustees. The Plan may not be amended to increase materially the amount which
may be spent thereunder without approval by a majority of the outstanding
Adviser Class Shares of the Fund. All material amendments of the Plan will
require approval by a majority of the Trustees of the Fund and of the Trustees
who are not "interested persons" of the Fund. For the fiscal year ended
September 30, 1997, the Mid Cap Growth, Value, Fixed Income, High Yield and
Balanced Portfolios paid $665, $201,647, $67,500, $3,009 and $37,084,
respectively, in distribution fees pursuant to the Distribution Plan. Other
than $4,492 of fees retained by the Distributor, fees paid to the Distributor
during the fiscal year were used to reimburse third-parties for
distribution-related services performed on behalf of the Fund.

    

                         SHAREHOLDER SERVICE AGREEMENT

   
The Fund has entered into a Shareholder Service Agreement with the Distributor
whereby the Distributor will compensate service providers who provide certain
services to clients who beneficially own Investment Class shares of the
portfolios described in the Investment Class prospectus. Each portfolio will
pay to the Distributor a fee at the annual rate of .15% of the average daily
net assets of such portfolio attributable to the shares serviced by the
service provider, which fee will be computed daily and paid monthly. During
the fiscal year ended September 30, 1997, the Fund paid $61, 244 to compensate
the Distributor under this Shareholder Service Agreement.
    

                                      31
<PAGE>

                              INVESTMENT ADVISER

   
Under an Investment Advisory Agreement ("Agreement") with the Fund, the
Adviser, subject to the control and supervision of the Fund's Board of
Trustees and in conformance with the stated investment objectives and policies
of each portfolio of the Fund, manages the investment and reinvestment of the
assets of each portfolio of the Fund. In this regard, it is the responsibility
of the Adviser to make investment decisions for the Fund's portfolios and to
place each portfolio's purchase and sales orders for investment securities.

As compensation for the services rendered by the Adviser under the Agreement
and the assumption by the Adviser of the expenses related thereto (other than
the cost of securities purchased for the portfolios and the taxes and
brokerage commissions, if any, payable in connection with the purchase and/or
sale of such securities), each portfolio pays the Adviser an advisory fee
calculated by applying a quarterly rate, based on the following annual
percentage rates, to the portfolio's average daily net assets for the quarter:

                                                       Rate
                                                       ----
Emerging Markets Value Portfolio                       0.750%
Equity Portfolio                                       0.500
Growth Portfolio                                       0.500
International Equity Portfolio                         0.500
Mid Cap Growth Portfolio                               0.500
Mid Cap Value Portfolio                                0.750
Small Cap Value Portfolio                              0.750
Value Portfolio                                        0.500
Cash Reserves Portfolio                                0.250
Domestic Fixed Income Portfolio                        0.375
Fixed Income Portfolio                                 0.375
Fixed Income II Portfolio                              0.375
Global Fixed Income Portfolio                          0.375
Multi-Market Fixed Income Portfolio                    0.450
High Yield Portfolio                                   0.375
Intermediate Duration Portfolio                        0.375
International Fixed Income Portfolio                   0.375
Limited Duration Portfolio                             0.300
Mortgage-Backed Securities Portfolio                   0.375
Municipal Portfolio                                    0.375
PA Municipal Portfolio                                 0.375
Special Purpose Fixed Income Portfolio                 0.375
Balanced Portfolio                                     0.450
Multi-Asset-Class Portfolio                            0.650
Balanced Plus Portfolio                                0.550
Advisory Foreign Fixed Income Portfolio                0.375
Advisory Mortgage Portfolio                            0.375

In cases where a shareholder of any of the portfolios has an investment
counseling relationship with the Adviser, the Adviser may, at its discretion,
reduce the shareholder's investment counseling fees by an amount equal to the
pro-rata advisory fees paid by the Fund. This procedure will be 
    



                                      32
<PAGE>

   
utilized with clients having contractual relationships based on total assets
managed by Miller Anderson & Sherrerd, LLP to avoid situations where excess
advisory fees might be paid to the Adviser. In no event will a client pay higher
total advisory fees as a result of the client's investment in the Fund. In
addition, the Adviser has voluntarily agreed to waive its advisory fees and/or
reimburse certain expenses to the extent necessary, if any, to keep total annual
operating expenses actually deducted from portfolio assets for the Emerging
Markets Value, Cash Reserves, Mortgage-Backed Securities, Municipal, PA
Municipal, Multi-Market Fixed Income, Advisory Foreign Fixed Income and Advisory
Mortgage Portfolios from exceeding 1.180%, .320%, .500%, .500%, .500%, .580%,
 .150% and .080% of its average daily net assets, respectively. With respect to
the Investment Class and Adviser Class of the Multi-Asset-Class Portfolio, the
Adviser is, on a voluntary basis, waiving its fees and/or reimbursing certain
expenses. The fee waivers and expense reimbursements for the Investment Class
and Adviser Class of the Multi-Asset-Class Portfolio are voluntary and may be
discontinued at the Adviser's discretion at any time. With respect to the
Institutional Class of the Multi-Asset-Class Portfolio, the Adviser has
voluntarily agreed to waive its advisory fees and/or reimburse certain expenses
to keep total operating expenses from exceeding 0.780%.

For the fiscal years ended September 30, 1995, 1996 and 1997, the Fund paid
the following advisory fees:
<TABLE>
<CAPTION>


                                                    Advisory Fees Paid                            Advisory Fees Waived

                                                 1995       1996        1997            1995         1996          1997
Portfolio                                        (000)      (000)       (000)           (000)        (000)        (000)
- ---------                                        -----      -----       -----           -----        -----        -----

<S>                                             <C>          <C>          <C>          <C>          <C>          <C>    
Emerging Markets Value Portfolio                $    85      $   286      $   195      $    52      $    42      $    30
Equity Portfolio                                  6,840        7,785        6,928            0            0            0
Growth Portfolio                                      *            *            *            *            *            *
International Equity Portfolio                    5,437        3,458        3,236            0            0            0
Mid Cap Growth Portfolio                          1,504        1,986        1,961            0            0            0
Mid Cap Value Portfolio                               0          188          896           14           46           28
Small Cap Value Portfolio                         2,683        3,464        5,161            0            0            0
Value Portfolio                                   5,078        7,716       14,010            0            0            0
Cash Reserves Portfolio                              51          138          166           39           52           65
Domestic Fixed Income Portfolio                      75          257          372           23            8           11
Fixed Income Portfolio                            4,893        5,917        9,431            0            0            0
Fixed Income II Portfolio                           567          773          776            0            0            0
Global Fixed Income Portfolio                       190          205          289            0            0            0
Multi-Market Fixed Income Portfolio                   *            *            *            *            *            *
High Yield Portfolio                                764        1,073        1,558            0            0            0
Intermediate Duration Portfolio                      57           52          144           17           18           23
International Fixed Income Portfolio                395          555          549            0            0            0
Limited Duration Portfolio                          206          351          404           11            0            4
Mortgage-Backed Securities Portfolio                348          177          173            5           21           22
Municipal Portfolio                                 110          167          211           37           38           30
PA Municipal Portfolio                               32           77           79           31           30           26
Special Purpose Fixed Income Portfolio            1,574        1,517        1,816            0            0            0
Balanced Portfolio                                1,385        1,521        1,527            0            0            0
Multi-Asset-Class Portfolio                         220          635          797          100          112          126
Balanced Plus Portfolio                               *            *            *            *            *            *
Advisory Foreign Fixed Income Portfolio               0        1,933            0        1,631        1,933          713
Advisory Mortgage Portfolio                           0        6,056            0        1,711        6,056        9,155
</TABLE>
    
* Not in operation during the period.

                                      33
<PAGE>


   
The Agreement continues for successive one year periods, only if each renewal
is specifically approved by a vote of the Fund's Board of Trustees, including
the affirmative votes of a majority of the Trustees who are not parties to the
agreement or "interested persons" (as defined in the 1940 Act) of any such
party in person at a meeting called for the purpose of considering such
approval. In addition, the question of continuance of the Agreement may be
presented to the shareholders of the Fund; in such event, continuance shall be
effected only if approved by the affirmative vote of a majority of the
outstanding voting securities of each portfolio of the Fund. If the holders of
any portfolio fail to approve the Agreement, the Adviser may continue to serve
as investment adviser to each portfolio which approved the Agreement, and to
any portfolio which did not approve the Agreement until new arrangements have
been made. The Agreement is automatically terminated if assigned, and may be
terminated by any portfolio without penalty, at any time, (1) by vote of the
Board of Trustees or by vote of the outstanding voting securities of the
portfolio or (2) on sixty (60) days' written notice to the Adviser, or (3) by
the Adviser upon ninety (90) days' written notice to the Fund.

The Fund bears all of its own costs and expenses, including but not limited
to: services of its independent accountants, its administrator and dividend
disbursing and transfer agent, legal counsel, taxes, insurance premiums, costs
incidental to meetings of its shareholders and Trustees, the cost of filing
its registration statements under federal and state securities laws, reports
to shareholders, and custodian fees. These Fund expenses are, in turn,
allocated to each portfolio, based on their relative net assets. Each
portfolio bears its own advisory fees and brokerage commissions and transfer
taxes in connection with the acquisition and disposition of its investment
securities.
    

                                ADMINISTRATION

   
MAS also serves as Administrator to the Fund pursuant to an Administration
Agreement dated as of November 18, 1993. Chase Global Funds Services Company
(formerly Mutual Fund Services Company, or MFSC), an affiliate of The Chase
Manhattan Bank, serves as transfer agent and provides fund accounting and
other services pursuant to a sub-administration agreement.

For the fiscal years ended September 30, 1995, 1996 and 1997, the Fund paid
the following administrative fees:

<TABLE>
<CAPTION>
                                                                     Administrative Fees Paid
                                                                   1995         1996         1997
                                                                  (000)        (000)         (000)
                                                                  --------------------------------

<S>                                                               <C>          <C>          <C>   
Emerging Markets Value Portfolio                                  $   14       $   38       $   24
Equity Portfolio                                                   1,094        1,246        1,136
Growth Portfolio                                                       *            *            *
International Equity Portfolio                                       870          553          544
Mid Cap Growth Portfolio                                             241          318          314
Mid Cap Value Portfolio                                                1           20          123
Small Cap Value Portfolio                                            286          369          550
Value Portfolio                                                      812        1,235        2,285
</TABLE>
    


                                      34
<PAGE>

<TABLE>
<CAPTION>
   
                                                                     Administrative Fees Paid
                                                                   1995         1996         1997
                                                                  (000)        (000)         (000)
                                                                  --------------------------------

<S>                                                               <C>          <C>          <C>   
Cash Reserves Portfolio                                               29           44           74
Domestic Fixed Income Portfolio                                       21           55           82
Fixed Income Portfolio                                             1,044        1,262        2,030
Fixed Income II Portfolio                                            121          165          165
Global Fixed Income Portfolio                                         41           44           62
Multi-Market Fixed Income Portfolio                                    *            *            *
High Yield Portfolio                                                 163          229          356
Intermediate Duration Portfolio                                       16           11           36
International Fixed Income Portfolio                                  84          118          117
Limited Duration Portfolio                                            58           93          109
Mortgage-Backed Securities Portfolio                                  75           38           42
Municipal Portfolio                                                   31           36           51
PA Municipal Portfolio                                                13           16           22
Special Purpose Fixed Income Portfolio                               336          323          414
Balanced Portfolio                                                   246          271          280
Multi-Asset-Class Portfolio                                           57          113          143
Balanced Plus Portfolio                                                *            *            *
Advisory Foreign Fixed Income Portfolio                              357          412          152
Advisory Mortgage Portfolio                                          374        1,292        1,954
</TABLE>
    

* Not in operation during the period.

                             DISTRIBUTOR FOR FUND
   
MAS Fund Distribution, Inc. (the "Distributor"), a wholly-owned subsidiary of
the Adviser, with its principal office at One Tower Bridge, West Conshohocken,
Pennsylvania 19428, distributes the shares of the Fund. Under the Distribution
Agreement, the Distributor, as agent of the Fund, agrees to use its best
efforts as sole distributor of the Fund's shares. The Distribution Agreement
continues in effect so long as such continuance is approved at least annually
by the Fund's Board of Trustees, including a majority of those Trustees who
are not parties to such Distribution Agreement nor interested persons of any
such party. The Distribution Agreement provides that the Fund will bear the
costs of the registration of its shares with the SEC and various states and
the printing of its prospectuses, statements of additional information and
reports to shareholders.
    
                                  CUSTODIANS

The Chase Manhattan Bank, New York, NY and Morgan Stanley Trust Company (NY),
Brooklyn, NY serve as custodians for the Fund. The Custodians hold cash,
securities, and other assets of the Fund as required by the 1940 Act. Morgan
Stanley Trust Company is an affiliated person, as defined in the 1940 Act, of
the Adviser and is compensated for its services as custodian on a per account
basis plus out of pocket expenses.

                            PORTFOLIO TRANSACTIONS

   
The Investment Advisory Agreement authorizes the Adviser to select the brokers
or dealers that will execute the purchases and sales of investment securities
for each of the Fund's portfolios and directs the Adviser to use its best
efforts to obtain the best execution with respect to all transactions for the
portfolios. In so doing, the Adviser will consider all matters it deems
relevant, including the following: the Adviser's knowledge of negotiated
commission rates and spreads currently available; the nature of the security
or instrument being traded; the size and type of the transaction; the nature
and character of the markets for the security or instrument to be purchased or
sold; the desired timing of the transaction; the activity existing and
expected in the market for the particular security 
    



                                      35
<PAGE>

or instrument; confidentiality; the execution, clearance, and settlement
capabilities of the broker or dealer selected and other brokers or dealers
considered; the reputation and perceived soundness of the broker or dealer
selected and other brokers or dealers considered; the Adviser's knowledge of
any actual or apparent operational problems of a broker or dealer; and the
reasonableness of the commission or its equivalent for the specific
transaction.

   
Although the Adviser generally seeks competitive commission rates and dealer
spreads, a portfolio will not necessarily pay the lowest available commission
on brokerage transactions or markups on principal transactions. Transactions
may involve specialized services on the part of the broker or dealer involved,
and thereby justify higher commissions or markups than would be the case with
other transactions requiring more routine services. In addition, a portfolio
may pay higher commission rates or markups than the lowest available when the
Adviser believes it is reasonable to do so in light of the value of the
research, statistical, pricing, and execution services provided by the broker
or dealer effecting the transaction. The Adviser does not attempt to put a
specific dollar value on the research services rendered or to allocate the
relative costs or benefits of those services among its clients, believing that
the research it receives will help the Adviser to fulfill its overall duty to
its clients. The Adviser uses research services obtained in this manner for
the benefit of all of its clients, though each particular research service may
not be used to service each client. As a result, the Fund may pay brokerage
commissions or markups that are used, in part, to purchase research services
that are not used to benefit the Fund.

It is not the Fund's practice to allocate brokerage or principal business on
the basis of sales of shares which may be made through intermediary brokers or
dealers. However, the Adviser may place portfolio orders with qualified
broker-dealers who recommend the Fund's portfolios or who act as agents in the
purchase of shares of the portfolios for their clients. During the fiscal
years ended September 30, 1995, 1996 and 1997, the Fund paid brokerage
commissions of $13,457,075, $18,252,335 and $19,134,219, respectively.

Some securities considered for investment by each of the Fund's portfolios may
also be appropriate for other clients serviced by the Adviser. The Adviser may
place a combined order for two or more accounts or portfolios for the purchase
or sale of the same security if, in its judgment, joint execution is in the
best interest of each participant and will result in best price execution.
Transactions involving commingled orders are allocated in a manner deemed to
be equitable to each account or portfolio. Although it is recognized that, in
some cases, joint execution of orders could adversely affect the price or
volume of the security that a particular account or fund may obtain, it is the
opinion of the Adviser and the Fund's Board of Trustees that combining such
orders generally will be more advantageous to the Fund than effecting such
transactions separately.

If purchases or sales of securities consistent with the investment policies of
a portfolio and one or more of these other clients serviced by the Adviser is
considered at or about the same time, transactions in such securities will be
allocated among the portfolio and clients in a manner deemed fair and
reasonable by the Adviser. Although there is no specified formula for
allocating such transactions, the various allocation methods used by the
Adviser, and the results of such allocations, are subject to periodic review
by the Fund's Trustees.

On May 31, 1997, Morgan Stanley Group Inc., then the indirect parent of the
Adviser, merged with Dean Witter, Discover & Co. to form Morgan Stanley, Dean
Witter, Discover & Co. As an indirect subsidiary of Morgan Stanley, Dean
Witter, Discover & Co., the Adviser is affiliated with certain U.S.-registered
broker-dealers and foreign broker-dealers (collectively, the AAffiliated
Brokers@). The Adviser may, in the exercise of its discretion under its
investment management agreement, effect transactions in securities or other
instruments for the Fund through the Affiliated Brokers. The Fund paid
$132,104 in brokerage commissions to affiliates for $75,128,827 of brokered
transactions for the fiscal year ended September 30, 1997.
    


                                      36
<PAGE>

   
                                ANNUAL TURNOVER

The annual turnover rate for each portfolio for the past two fiscal years
ended September 30 was as follows:

Portfolio                                                   1996          1997
- ---------                                                   ----          ----

Emerging Markets Value                                      108%           64%
Equity                                                       67%           85%
Growth                                                      N/A           N/A
International Equity                                         78%           62%
Mid Cap Growth                                              141%          134%
Mid Cap Value                                               377%          184%
Small Cap Value                                             145%          107%
Value                                                        53%           46%
Domestic Fixed Income                                       168%          217%
Fixed Income                                                162%          179%
Fixed Income II                                             165%          182%
Global Fixed Income                                         133%          137%
Multi-Market Fixed Income                                   N/A           N/A
High Yield                                                  115%           96%
Intermediate Duration                                       251%          204%
International Fixed Income                                  124%          107%
Limited Duration                                            174%          130%
Mortgage-Backed Securities                                  116%          164%
Municipal                                                    78%           54%
PA Municipal                                                 51%           64%
Special Purpose Fixed Income                                151%          198%
Balanced                                                    110%          145%
Multi-Asset-Class                                           122%          141%
Balanced Plus                                               N/A           N/A
Advisory Mortgage                                           139%          144%
Advisory Foreign Fixed Income                               170%          208%

N/A -- Portfolio had not commenced operations as of September 30, 1997.
    

                              GENERAL INFORMATION

Description of Shares and Voting Rights

   
The Declaration of Trust permits the Trustees to issue an unlimited number of
shares of beneficial interest, without par value, from an unlimited number of
series ("portfolios") of shares. Currently the Fund is offering shares of
twenty-seven portfolios.

The shares of each portfolio of the Fund are fully paid and non-assessable,
except as set forth below, and have no preference as to conversion, exchange,
dividends, retirement or other features. The shares of each portfolio of the
Fund have no preemptive rights. The shares of the Fund have non-cumulative
voting rights, which means that the holders of more than 50% of the shares
voting for the election of Trustees can elect 100% of the Trustees if they
choose to do so. A Shareholder of a Class is entitled to one vote for each
full Class Share held (and a fractional vote for each fractional Class Share
held) in the Shareholder's name on the books of the Fund. Shareholders of a
    



                                      37
<PAGE>

Class have exclusive voting rights regarding any matter submitted to
shareholders that relates solely to that Class of Shares (such as a
distribution plan or service agreement relating to that Class), and separate
voting rights on any other matter submitted to shareholders in which the
interests of the shareholders of that Class differ from the interests of
holders of any other Class.

The Fund will continue without limitation of time, provided however that:

   
1) Subject to the majority vote of the holders of shares of any portfolio of
the Fund outstanding, the Trustees may sell or convert the assets of such
portfolio to another investment company in exchange for shares of such
investment company, and distribute such shares, ratably among the shareholders
of such portfolio;

2) Subject to the majority vote of shares of any portfolio of the Fund
outstanding, the Trustees may sell and convert into money the assets of such
portfolio and distribute such assets ratably among the shareholders of such
portfolio; and

3) Without the approval of the shareholders of any portfolio, unless otherwise
required by law, the Trustees may combine the assets of any two or more
portfolios into a single portfolio so long as such combination will not have a
material adverse effect upon the shareholders of such portfolio.

Upon completion of the distribution of the remaining proceeds or the remaining
assets of any portfolio as provided in paragraphs 1), 2), and 3) above, that
portfolio shall terminate and the Trustees shall be discharged of any and all
further liabilities and duties hereunder and the right, title and interest of
all parties shall be canceled and discharged with regard to that portfolio.

Dividend and Distributions

The Fund's policy is to distribute substantially all of each portfolio's net
investment income, if any, together with any net realized capital gains in the
amount and at the times that will avoid both income (including capital gains)
taxes on it and the imposition of the federal excise tax on undistributed
income and capital gains (see discussion under "Dividends, Capital Gains
Distributions and Taxes" in the Prospectus). The amounts of any income
dividends or capital gains distributions cannot be predicted.

Any dividend or distribution paid shortly after the purchase of shares of a
portfolio by an investor may have the effect of reducing the per share net
asset value of that portfolio by the per share amount of the dividend or
distribution, except for the Cash Reserves Portfolio. Furthermore, such
dividends or distributions, although in effect a return of capital, are
subject to income taxes as set forth in the Prospectus.

As set forth in the Prospectus, unless the shareholder elects otherwise in
writing, all dividends and distributions are automatically received in
additional shares of that portfolio of the Fund at net asset value (as of the
business day following the record date). This will remain in effect until the
Fund is notified by the shareholder in writing at least three days prior to
the record date that either the Income Option (income dividends in cash and
capital gains distributions in additional shares at net asset value) or the
Cash Option (both income dividends and capital gain distributions in cash) has
been elected. An account statement is sent to shareholders whenever a dividend
or distribution is paid.

Each portfolio of the Fund is treated as a separate entity (and hence, as a
separate "regulated investment company") for federal tax purposes. Any net
capital gains recognized by a portfolio are distributed to its investors
without need to offset (for federal income tax purposes) such gains against
any net capital losses of another portfolio.
    

                                      38
<PAGE>

Shareholder and Trustee Liability

   
Under Pennsylvania law, shareholders of a trust such as the Fund may, under
certain circumstances, be held personally liable as partners for the
obligations of the trust. The Fund's Declaration of Trust contains an express
disclaimer of shareholder liability for acts or obligations of the Fund and
requires that notice of such disclaimer be given in each agreement,
obligation, or instrument entered into or executed by the Fund or the
Trustees, but this disclaimer may not be effective in some jurisdictions or as
to certain types of claims. The Declaration of Trust further provides for
indemnification out of the Fund's property of any shareholder held personally
liable for the obligations of the Fund. The Declaration of Trust also provides
that the Fund shall, upon request, assume the defense of any claim made
against any shareholder for any act or obligation of the Fund and satisfy any
judgment thereon. Thus, the risk of a shareholder incurring financial loss on
account of shareholder liability is limited to circumstances in which the Fund
itself would be unable to meet its obligations.

Pursuant to the Declaration of Trust, the Trustees may also authorize the
creation of additional series of shares (the proceeds of which would be
invested in separate, independently managed portfolios with distinct
investment objectives and policies and share purchase, redemption and net
asset valuation procedures) with such preferences, privileges, limitations and
voting and dividend rights as the Trustees may determine. All consideration
received by the Fund for shares of any additional series or class, and all
assets in which such consideration is invested, would belong to that series or
class (subject only to the rights of creditors of the Fund) and would be
subject to the liabilities related thereto. Pursuant to the 1940 Act
shareholders of any additional series or class of shares would normally have
to approve the adoption of any advisory contract relating to such series or
class and of any changes in the investment policies relating thereto.
    

The Declaration of Trust further provides that the Trustees will not be liable
for errors of judgment or mistakes of fact or law, but nothing in the
Declaration of Trust protects a Trustee against any liability to which he
would otherwise be subject by reason of willful misfeasance, bad faith, gross
negligence, or reckless disregard of the duties involved in the conduct of the
office.

                            PERFORMANCE INFORMATION

   
The Fund may from time to time quote various performance figures to illustrate
the past performance of its portfolios. Performance quotations by investment
companies are subject to rules adopted by the SEC, which require the use of
standardized performance quotations or, alternatively, that every
non-standardized performance quotation furnished by the Fund be accompanied by
certain standardized performance information computed as required by the SEC.
An explanation of the methods for computing performance follows.
    

Total Return

   
A portfolio's average annual total return is determined by finding the average
annual compounded rates of return over 1, 5, and 10 year periods (or, if
shorter, the period since inception of the portfolio) that would equate an
initial hypothetical $1,000 investment to its ending redeemable value. The
calculation assumes that all dividends and distributions are reinvested when
paid. The quotation assumes the amount was completely redeemed at the end of
each 1, 5, and 10 year period (or, if shorter, the period since inception of
the portfolio) and the deduction of all applicable Fund expenses on an annual
basis. When considering average total return figures for periods longer than
one year, it is important to note that a portfolio's annual total return for
any one period might have been greater or less than the average for the entire
period. Average annual total return is calculated according to the following
formula:
    


                                      39
<PAGE>
                P (1+T)n = ERV
Where:          P = a hypothetical initial payment of $1,000
                T = average annual total return
                n = number of years
                ERV = ending redeemable value of a hypothetical $1,000
                      payment made at the beginning of the stated period

The average annual total return of each Institutional Class Portfolio of the
Fund for the periods noted is set forth below:
<TABLE>
<CAPTION>
                                            1 Year       5 Years      10 Years       Inception
                                            ended         ended         ended           to       Inception
                                           9/30/97       9/30/97       9/30/97        9/30/97       Date
                                           -------       -------       -------        -------       ----
   
<S>                                          <C>           <C>           <C>           <C>        <C>   <C>
Emerging Markets Value Portfolio             18.08       --            --              15.71      02/28/95
Equity Portfolio                             38.46         18.66         14.74         17.56      11/14/84
Growth Portfolio*                              N/A           N/A           N/A           N/A           N/A
International Equity Portfolio               23.16         12.30       --               9.5       11/25/88
Mid Cap Growth Portfolio                     28.05         22.77       --              21.44      03/30/90
Mid Cap Value Portfolio                      61.40       --            --              42.61      12/30/94
Small Cap Value Portfolio                    49.81         26.75         17.15         15.44      07/01/86
Value Portfolio                              41.25         23.31         16.39         18.59      11/05/84
Cash Reserves Portfolio                       5.32          4.48       --               4.75      08/29/90
Domestic Fixed Income Portfolio              10.20          7.83         10.02         10.01      09/30/87
Fixed Income Portfolio                       11.47          8.39         10.30         10.96      11/14/84
Fixed Income Portfolio II                    10.58          7.69       --              10.08      08/31/90
Global Fixed Income Portfolio                 3.53       --            --               7.36      04/30/93
Multi-Market Fixed Income Portfolio*           N/A           N/A           N/A           N/A           N/A
High Yield Portfolio                         19.90         14.03       --              12.40      02/28/89
Intermediate Duration Portfolio               8.93       --            --               8.87      10/03/94
International Fixed Income Portfolio          0.44       --            --               6.81      04/29/94
Limited Duration Portfolio                    6.98          5.19       --               5.99      03/31/92
Mortgage-Backed Securities Portfolio         10.70          7.32       --               7.50      01/31/92
Municipal Portfolio                           8.47       --            --               7.95      10/01/92
PA Municipal Portfolio                        8.01       --            --               8.28      10/01/92
Special Purpose Fixed Income Portfolio       11.78          8.90       --               9.84      03/31/92
Balanced Portfolio                           27.44       --            --              14.53      12/31/92
Multi-Asset-Class Portfolio                  26.50       --            --              18.14      07/29/94
Balanced Plus Portfolio*                       N/A           N/A           N/A           N/A           N/A
Advisory Foreign Fixed Income Portfolio      14.08       --            --              14.31      10/07/94
Advisory Mortgage Portfolio                  11.03       --            --               9.63      04/12/95
</TABLE>

* The Growth, Balanced Plus and Multi-Market Fixed Income Portfolios had not
commenced operations as of September 30, 1997.

The average annual total return of each Investment Class Portfolio of the Fund
for the periods noted is set forth below:
<TABLE>
<CAPTION>
                                            1 Year       5 Years      10 Years       Inception   Inception
                                            ended         ended         ended           to        Date of
                                           9/30/97       9/30/97       9/30/97        9/30/97      Class
                                           -------       -------       -------        -------       ----
<S>                                          <C>           <C>           <C>           <C>        <C>   <C>
Equity Portfolio                            38.12         --            --             29.53       04/10/96
International Equity Portfolio              22.85         --            --             16.24       04/10/96
Mid Cap Value Portfolio                     61.05         --            --             46.01       05/10/96
Value Portfolio                             41.01         --            --             32.09       05/06/96
Fixed Income Portfolio                      --            --            --             10.07       10/15/96
High Yield Portfolio                        19.77         --            --             18.61       05/21/96
Special Purpose Fixed Income Portfolio      11.62         --            --             10.83       04/10/96
Balanced Portfolio                          --            --            --             18.40       04/04/97
Multi-Asset-Class Portfolio                 26.32         --            --             21.18       06/10/96
Balanced Plus Portfolio*                    --            --            --                --            N/A

* The Balanced Plus Portfolio had not commenced operations as of September 30,
1997.
    
                                                                                   
</TABLE>

                                      40
<PAGE>



The average annual total return of each Adviser Class Portfolio of the Fund
for the periods noted is set forth below:
<TABLE>
<CAPTION>

   
                                                                                                   Inception
                                           1 Year       5 Years         10 Years    Inception       Date of
                                           ended         ended            ended         to         Adviser
                                          9/30/97       9/30/97          9/30/97      9/30/97      Class
                                          -------       -------          -------      -------      ---------
<S>                                        <C>           <C>            <C>             <C>        <C>
Mid Cap Growth Portfolio                    --            --            --               27.99     01/31/97
Value Portfolio                             40.87         --            --               44.49     07/17/96
Fixed Income Portfolio                      --            --            --                 7.79    11/07/96
High Yield Portfolio                        --            --            --               12.63     01/31/97
Balanced Portfolio                          --            --            --               23.82     11/01/96
</TABLE>

The portfolios may also calculate total return on an aggregate basis which
reflects the cumulative percentage change in value over the measuring period.
Aggregate total returns may be shown by means of schedules, charts or graphs
and may include subtotals of the various components of total return (e.g.
income dividends or returns for specific types of securities such as industry
or country types). The formula for calculating aggregate total return can be
expressed as follows:
    

                Aggregate Total Return =          [  (  ERV  )  -  1  ]
                                             --------------------------------
                                                           P

   
The aggregate total return of each portfolio for the periods noted is set
forth below. One year aggregate total return figures and portfolio inception
dates are reflected under the annual total return figures provided above.

                                                        5 Years
                                                         ended      Inception to
                                                        9/30/97        9/30/97
                                                        -------        -------

Emerging Markets Value Portfolio                            N/A          45.86%
Equity Portfolio                                          135.21%       702.87
Growth Portfolio**                                           --            --
International Equity Portfolio                             78.62        123.96
Mid Cap Growth Portfolio                                  178.94        329.47
Mid Cap Value Portfolio                                     N/A         165.50
Small Cap Value Portfolio                                 227.21        403.11
Value Portfolio                                           185.13        802.03
Cash Reserves Portfolio                                    24.52         38.96
Domestic Fixed Income Portfolio                            45.76        159.92
Fixed Income Portfolio                                     49.60        281.77
Fixed Income Portfolio II                                  44.81         97.47
Global Fixed Income Portfolio                               N/A          36.90
Multi-Market Fixed Income Portfolio**                        --            --
High Yield Portfolio                                       92.83        172.84
Intermediate Duration Portfolio                             N/A          28.94
International Fixed Income Portfolio                        N/A          25.29
Limited Duration Portfolio                                 28.81         37.70
Mortgage-Backed Securities Portfolio                       42.40         50.58
Municipal Portfolio                                         N/A          46.59
PA Municipal Portfolio                                      N/A          48.80
Special Purpose Fixed Income Portfolio                     53.13         67.63
Balanced Portfolio                                          N/A          90.44
Multi-Asset-Class Portfolio                                 N/A          67.70
Balanced Plus Portfolio**                                   --            --
Advisory Foreign Fixed Income Portfolio                     N/A          48.97
Advisory Mortgage Portfolio                                 N/A          25.44
    


                                      41
<PAGE>

   
* The above performance information relates solely to the Institutional Class.
Performance for the Investment Class and Adviser Class would be lower because
of the Shareholder Servicing fees and 12b-1 fees charged to the Investment
Class and Adviser Class, respectively. ** The Growth, Balanced Plus and
Multi-Market Fixed Income Portfolios had not commenced operations as of
September 30, 1997.

The portfolios may also calculate a total return gross of all expenses which
reflects the cumulative percentage change in value over the measuring period
prior to the deduction of all fund expenses. The formula for calculating the
total return gross of all expenses can be expressed as follows:
    

Total Return Gross of all Expenses = ((ERV + E)/P) -1)

E = Fund expenses deducted from the ending redeemable value during the
measuring period.

The annualized since inception gross of fees returns of the Fund's portfolios
are set forth below:
   

                                                                Annualized Since
                                                                     Inception
                                                                   Period Ended:
                                                                      9/30/97
                            MAS EQUITY FUNDS                    (Gross of Fees)*

Inception Date
- --------------

   11/14/84                 Equity Portfolio                        18.29%
   N/A                      Growth Portfolio                          --
   11/05/84                 Value Portfolio                         19.33
   07/01/86                 Small Cap Value Portfolio               16.44
   03/30/90                 Mid Cap Growth Portfolio                22.17
   11/25/88                 International Equity Portfolio          10.22
   12/30/94                 Mid Cap Value Portfolio                 43.71
   02/28/95                 Emerging Markets Value Portfolio        17.10

                            MAS FIXED INCOME FUNDS

   11/14/84                 Fixed Income Portfolio                  11.50%
   09/30/87                 Domestic Fixed Income Portfolio         10.54
   03/31/92                 Special Purpose Income Portfolio        10.36
   03/31/92                 Limited Duration Portfolio               6.41
   01/31/92                 Mortgage-Backed Portfolio                8.12
   02/28/89                 High Yield Portfolio                    13.07
   10/01/92                 Municipal Portfolio                      8.56
   10/01/92                 PA Municipal Portfolio                   8.82
   04/30/93                 Global Fixed Income Portfolio            8.02
   N/A                      Multi-Market Fixed Income Portfolio       --
   04/29/94                 International Fixed Income Portfolio     7.40
   10/07/94                 Advisory Foreign Fixed Income Portfolio 16.64
   10/03/94                 Intermediate Duration Portfolio          9.46
   04/12/95                 Advisory Mortgage Portfolio              9.72


                              MAS BALANCED FUNDS

   12/31/92                   Balanced Portfolio                    15.16%
   N/A                        Balanced Plus Portfoli                  --
   07/29/94                   Multi-Asset-Class Portfolio           18.90
    


                                      42
<PAGE>

   
*Annualized

As of September 30, 1997, the Growth, Multi-Market Fixed Income and Balanced
Plus Portfolios had not commenced operations.

The Municipal and PA Municipal Portfolio may also calculate a total return
which reflects the cumulative percentage change in value over the measuring
period after the deduction of income taxes. The formula for calculating the
total after tax return can be expressed as follows:
    

Total After Tax Return = (((((ERV-M)/P) x T) + (M/P)) -1)

M = Portion of ending redeemable value which was derived from tax exempt
    income. 
T = Applicable tax rate.

   
The after tax returns are as follows for the Municipal Portfolio and the PA
Municipal Portfolio for the period 10/1/92 (inception of the Funds) through
9/30/97:

                                           Pre-tax return        Post-tax return

Municipal Portfolio                        7.95*/46.59**         7.86*/45.98**
                                           ______________        _______________
                                           8.28*/48.80**          7.98*/46.79**
PA Municipal Portfolio                     ______________        _______________
    

*Annualized
**Cumulative

The tax rates used were 31% federal and 2.8% Pennsylvania. All Municipal
Interest was considered exempt from federal taxes and interest from treasuries
was considered exempt from Pennsylvania.

Yield

   
In addition to total return, each portfolio of the Fund (except the Cash
Reserves Portfolio) may quote performance in terms of a 30-day yield. The
yield formula provides for semiannual compounding, which assumes that net
investment income is earned and reinvested at a constant rate and annualized
at the end of a six-month period. Methods used to calculate advertised yields
are standardized for all stock and bond mutual funds. However, these methods
differ from the accounting methods used by the portfolio to maintain its books
and records, therefore the advertised 30-day yield may not reflect the income
paid to your own account or the yield reported in the portfolios's reports to
shareholders. A portfolio may also advertise or quote a yield which is gross
of expenses. The yield figures provided will be calculated according to a
formula prescribed by the SEC and can be expressed as follows:
    

                                      43
<PAGE>

                       Yield  =  2  [ ( (a-b/cd) + 1) 6 - 1 ]

Where:

a =      dividends and interest earned during the period.
b =      expenses accrued for the period (net of reimbursements).
c =      the average daily number of shares outstanding during the
         period that were entitled to receive dividends.
d =      the maximum offering price per share on the last day of the
         period.

   
For the purpose of determining the interest earned (variable "a" in the
formula) on debt obligations that were purchased by a portfolio at a discount
or premium, the formula generally calls for amortization of the discount or
premium; the amortization schedule will be adjusted monthly to reflect changes
in the market value of the debt obligations. The 30-day yield figures for each
of the Fund's fixed-income and equity portfolios is set forth below:

                                                         Period ending
                                                         9/30/97
                                                         -------

Emerging Markets Value Portfolio                               1.02
Equity Portfolio                                               1.15
International Equity Portfolio                                 1.51
Mid Cap Growth Portfolio                                      (0.20)
Mid Cap Value Portfolio                                        0.08
Small Cap Value Portfolio                                      0.45
Value Portfolio                                                1.93
Domestic Fixed Income Portfolio                                6.32
Fixed Income Portfolio                                         6.37
Fixed Income Portfolio II                                      6.39
Global Fixed Income Portfolio                                  5.30
High Yield Portfolio                                           8.60
Intermediate Duration Portfolio                                6.34
International Fixed Income Portfolio                           4.65
Limited Duration Portfolio                                     5.74
Mortgage-Backed Securities Portfolio                           9.96
Municipal Portfolio                                            4.42
PA Municipal Portfolio                                         4.78
Special Purpose Fixed Income Portfolio                         7.08
Balanced Portfolio                                             3.27
Multi-Asset-Class Portfolio                                    2.66
Advisory Foreign Fixed Income Portfolio                        5.44
Advisory Mortgage Portfolio                                    7.39


As of September 30, 1997, the Growth, Balanced Plus and Multi-Market Fixed
Income Portfolios had not commenced operations.
    

* The above performance information relates solely to the Institutional Class.
Performance for the Investment Class and Adviser Class would be lower because
of the Shareholder Servicing fees and 12b-1 fees charged to the Investment
Class and Adviser Class, respectively.

Yield of the Cash Reserves Portfolio

The current yield of the Cash Reserves Portfolio is calculated daily on a base
period return of a hypothetical account having a beginning balance of one
share for a particular period of time (generally 7 days). The return is
determined by dividing the net change (exclusive of any capital changes) in
such account by the value of the account at the beginning of the period and
then multiplying it by 365/7 to get the annualized current yield. The


                                      44
<PAGE>

   
calculation of net change reflects the value of additional shares purchased
with the dividends by the portfolio, including dividends on both the original
share and on such additional shares. An effective yield, which reflects the
effects of compounding and represents an annualizing of the current yield with
all dividends reinvested, may also be calculated for the portfolio by dividing
the base period return by 7, adding 1 to the quotient, raising the sum to the
365th power, and subtracting 1 from the results.

Set forth below is an example, for purposes of illustration only, of the
current and effective yield calculations for the Cash Reserves Portfolio for
the 7 day base period ending September 30, 1997.
                                                            Period ending
                                                                9/30/97
                                                             ------------

Value at beginning of period                                  $1.00
Value at end of period                                        $1.00
Current yield                                                 5.61%
Effective yield                                               5.46%

The net asset value per share of the Cash Reserves Portfolio is $1.00 and has
remained at that amount since the initial offering of the portfolio. The yield
of the portfolio will fluctuate. The annualizing of a week's dividend is not a
representation by the portfolio as to what an investment in the portfolio will
actually yield in the future. Actual yields will depend on such variables as
investment quality, average maturity, the type of instruments the portfolio
invests in, changes in interest rates on instruments, changes in the expenses
of the Fund and other factors. Yields are one basis investors may use to
analyze the portfolios of the Fund and other investment vehicles; however,
yields of other investment vehicles may not be comparable because of the
factors set forth in the preceding sentence, differences in the time periods
compared and differences in the methods used in valuing portfolio instruments,
computing net asset value and calculating yield.

The performance of a portfolio, as well as the composite performance of all
fixed-income portfolios and all equity portfolios, may be compared to data
prepared by Lipper Analytical Services, Inc., CDA Investment Technologies,
Inc., Morningstar, Inc., the Donoghue Organization, Inc. or other independent
services which monitor the performance of investment companies, and may be
quoted in advertising in terms of their rankings in each applicable universe.
In addition, the Fund may use performance data reported in financial and
industry publications, including Barron's, Business Week, Forbes, Fortune,
Investor's Business Daily, IBC/Donoghue's Money Fund Report, Money Magazine,
The Wall Street Journal and USA Today.
    

                              COMPARATIVE INDICES

Each portfolio of the Fund may from time to time use one or more of the
following unmanaged indices for performance comparison purposes:

Consumer Price Index

The Consumer Price Index is published by the US Department of Labor and is a
measure of inflation.

Financial Times Actuaries World Ex US Index

The FT-A World Ex US Index is a capitalization-weighted price index, expressed
in dollars, after dividend withholding taxes, of foreign stock prices. This
index is calculated daily and reflects price changes in 24 major



                                      45
<PAGE>

foreign equity markets. It is jointly compiled by the Financial Times, Ltd.,
Goldman, Sachs & Co., and County NatWest/Wood Mackenzie in conjunction with
the Institute of Actuaries and the Faculty of Actuaries. First Boston High
Yield Index

The First Boston High Yield Index was constructed to mirror the public high
yield debt market. The index is a market weighted, trader priced index,
tracked by the First Boston Corporation. There are approximately 475
securities in the index with a total market value of approximately $93
billion.

JP Morgan Traded Government Bond Index

The JP Morgan Traded Government Bond Index is designed to provide a
comprehensive measure of total return performance of the domestic Government
bond market of 13 countries. The index is maintained by JP Morgan Securities,
Inc. and includes only liquid issues.

   
J.P. Morgan Emerging Markets Bond Index

The J.P. Morgan Emerging Markets bond Index is a market-weighted index
composed of all Brady Bonds outstanding and includes Argentina, Brazil,
Bulgaria, Mexico, Nigeria, the Philippines, Poland and Venezuela.
    

Lehman Brothers 5-Year Municipal Bond Index

Lehman Brothers 5-Year Municipal Bond Index is a total return performance
benchmark for the intermediate investment grade tax exempt bond market. the
index includes general obligation bonds, revenue bonds, insured bonds and
prefunded bonds with maturities between 4 and 6 years.

Lehman Brothers 10-Year Municipal

Lehman Brothers 10-Year Municipal Bond Index is a total return performance
benchmark for the long term, investment grade tax exempt bond market. The
index includes general obligation bonds, revenue bonds, insured bonds and
prefunded bonds with maturities between 8 and 12 years.

Lehman Brothers Aggregate Index

The Lehman Brothers Aggregate Index is a fixed income market value-weighted
index that combines the Lehman Brothers Government/Corporate Index and the
Lehman Brothers Mortgage-Backed Securities Index. It includes fixed rate
issues of investment grade (BBB) or higher, with maturities of at least one
year and outstanding par values of at least $100 million for U. S. Government
issues and $25 million for others.

Lehman Brothers Government/Corporate Index

The Lehman Brothers Government/Corporate Index is a combination of the
Government and Corporate Bond Indices. The Government Index includes public
obligations of the U. S. Treasury, issues of Government agencies, and
corporate debt backed by the U. S. Government. The Corporate Bond Index
includes fixed-rate nonconvertible corporate debt. Also included are Yankee
Bonds and nonconvertible debt issued by or guaranteed by foreign or
international governments and agencies. All issues are investment grade (BBB)
or higher, with maturities of at least one year and an outstanding par value
of at least $100 million for U. S. Government issues and $25 million for
others. Any security downgraded during the month is held in the index until
month-end and then removed. All returns are market value weighted inclusive of
accrued income.

Lehman Brothers Intermediate Government/Corporate Index

The Lehman Brothers Intermediate Government/Corporate Index is a combination
of the Government and Corporate Bond Indices. All issues are investment grade
(BBB) or higher, with maturities of one to ten years and an outstanding par
value of at least $100 million for U. S. Government issues and $25 million for
others. The Government Index includes public obligations of the U. S.
Treasury, issues of Government agencies, and corporate debt backed by the U.
S. Government. The Corporate Bond Index includes fixed-rate nonconvertible
corporate debt. Also included are Yankee Bonds and nonconvertible debt issued
by or guaranteed by foreign or international governments and agencies. Any
security downgraded during the month is held in the index until month-end and
then removed. All returns are market value weighted inclusive of accrued
income.



                                      46


<PAGE>

Lehman Brothers Long Municipal Bond Index

The Lehman Brothers Long Municipal Bond Index is a total return for the
long-term, investment-grade tax-exempt bond market for bonds. The index
includes municipal bonds with maturities of 22 years or more.

Lehman Brothers Mortgage-Backed Securities Index

The Lehman Brothers Mortgage-Backed Securities Index includes fixed rate
mortgage securities backed by GNMA, FHLMC, and FNMA. Graduated Payment
Mortgages (GPM's) are included. All issues are AAA, with maturities of at
least one year and outstanding par values of at least $100 million. Returns
are market value weighted inclusive of accrued income.

Lipper Growth & Income Fund Index

The Lipper Growth & Income Fund Index is a net asset value weighted index of
the 30 largest Funds within the Growth & Income investment objective. It is
calculated daily with adjustments for income dividends and capital gains
distributions as of the ex-dividend dates.

Lipper High Current Yield Fund Average

The Lipper High Current Yield Fund Average reports the average return of all
the Funds tracked by Lipper Analytical Services, Inc. classified as high yield
funds. The number of Funds tracked varies. As a result, reported returns for
longer time periods do not always match the linked product of shorter period
returns.

Salomon World Government Bond Index ex US

The Salomon World Government Bond Index ex US is designed to provide a
comprehensive measure of total return performance of the domestic government
bond markets of 12 countries outside the United States. The index has been
constructed with the aim of choosing "an inclusive" universe of
institutionally traded fixed rate bonds. The selection of security types to be
included in the index is made with the aim of being as comprehensive as
possible, while satisfying the criterion of reasonable availability to
domestic and international institutions and the existence of complete pricing
and market profile data.

International Finance Corporation Emerging Markets Index

The IFC Emerging Markets Index is an index designed to measure the total
return in either US or local currency terms of developing markets as defined
by the World Bank. The selection of stocks is made based on size, liquidity
and industry. The weight given to any stock is determined by its market
capitalization.




                                      47
<PAGE>

Lipper Money Market Average

The Lipper Money Market Average reports the average return of all the Funds
tracked by Lipper Analytical Services, Inc., classified as money market Funds
for any given period. The number of Funds tracked varies. As a result,
reported returns for longer time periods do not always match the linked
product of shorter period returns.

Merrill Lynch Corporate & Government Bond Index

The Merrill Lynch Corporate & Government Bond Index includes over 4,500 U.S.
Treasury, Agency and investment grade corporate bonds. The Index is calculated
daily and will be used from time to time in performance comparison for partial
month periods.

Morgan Stanley Capital International World ex USA Index

The Morgan Stanley Capital International World ex USA Index is a
capitalization-weighted price index expressed in dollars. The index reflects
the performance of over 1,100 companies in 19 foreign equity markets. The
index includes dividends, net of foreign withholding taxes.

Morgan Stanley Capital International EAFE Index

The Morgan Stanley Capital International EAFE Index is an arithmetic, market
value-weighted average of the performance of over 900 securities listed on the
stock exchanges of countries in Europe, Australia and the Far East.

Morgan Stanley Capital International EAFE-GDP Weighted Index

The EAFE-GDP index is an arithmetic average of the performance of over 900
securities listed on the stock exchanges of countries in Europe, Australia and
the Far East. The index is weighted by the Grow Domestic Product of the
various countries in the index.

Morgan Stanley Capital International Emerging Markets Free Index

The MSCI Emerging Markets Free Index is a capitalization weighted index of
over 800 stocks from 17 different emerging market countries.

NASDAQ Industrials Index

The NASDAQ Industrials Index is a measure of all NASDAQ National Market System
issues classified as industrial based on Standard Industrial Classification
codes relative to a company's major source of revenue. The index is exclusive
of warrants, and all domestic common stocks traded in the regular NASDAQ
market which are not part of the NASDAQ National Market System. The NASDAQ
Industrials Index is market value weighted.

Russell 1000

The Russell 1000 Index consists of the 1,000 largest of the 3,000 largest
stocks. Market capitalization is typically between $610 million and $85
billion. The list is rebalanced each year on June 30. If a stock is taken over
or goes bankrupt, it is not replaced until rebalancing. Therefore, there can
be fewer than 1,000 stocks in the Russell 1000 Index. The index is an equity
market capitalization weighted index available from Frank Russell & Co. on a
monthly basis.

                                      48
<PAGE>

Russell 2000

The Russell 2000 Index consists of the 2,000 smallest of the 3,000 largest
stocks. Market capitalization is typically between $610 million and $57
million. The list is rebalanced each year on June 30. If a stock is taken over
or goes bankrupt, it is not replaced until rebalancing. Therefore, there can
be fewer than 2,000 stocks in the Russell 2000 Index. The index is an equity
market capitalization weighted index available from Frank Russell & Co. on a
monthly basis.

Russell 2500

The Russell 2500 Index consists of the 2,500 smallest of the 3,000 largest
stocks. Market capitalization is typically between $1.7 billion and $57
million. The list is rebalanced each year on June 30. If a stock is taken over
or goes bankrupt, it is not replaced until rebalancing. Therefore, there can
be fewer than 2,500 stocks in the Russell 2500 Index. The index is an equity
market capitalization weighted index available from Frank Russell & Co. on a
monthly basis.

Russell 3000

The Russell 3000 Index is a combination of the Russell 1000 Index and the
Russell 2000 Index.

Salomon 1-3 Year Treasury/Government Sponsored Index

The Salomon 1-3 Year Treasury/Government Sponsored Index includes U.S.
Treasury and agency securities with maturities one year or greater and less
than three years. Securities with amounts outstanding of at least $25 million
are included in the index.

Salomon 1-3 Year Treasury/Government Sponsored/Corporate Index

The Salomon 1-3 Year Treasury/Government Sponsored/Corporate Index includes
U.S. Treasury, agency and investment grade (BBB or better) securities with
maturities one year or greater and less than three years. Securities with
amounts outstanding of at least $25 million are included in the index.

Salomon Broad Index

The Salomon Broad Index, also known as the Broad Investment Grade (BIG) Index,
is a fixed income market capitalization-weighted index, including U. S.
Treasury, agency, mortgage and investment grade (BBB or better) corporate
securities with maturities of one year or longer and with amounts outstanding
of at least $25 million. The government index includes traditional agencies;
the mortgage index includes agency pass-throughs and FHA and GNMA project
loans; the corporate index includes returns for 17 industry sub-sectors.
Securities excluded from the Broad Index are floating/variable rate bonds,
private placements, and derivatives (e. g., U. S. Treasury zeros, CMOs,
mortgage strips). Every issue is trader-priced at month-end and the index is
published monthly.

Salomon High-Yield Market Index

The Salomon High-Yield Market Index includes public, non-convertible corporate
bond issues with at least one year remaining to maturity and $50 million in
par amount outstanding which carry a below investment-grade quality rating
from either Standard & Poor's or Moody's rating services.



                                      49
<PAGE>

Salomon Mortgage Index

The Salomon Mortgage Index includes agency pass-throughs (GNMA, FHLMC, FNMA)
and FHA and GNMA project loans. Pools with remaining terms shorter than 25
years are seasoned; pools with longer terms are classified as new. The index
is published monthly.

Salomon One To Three Year Treasury Index

The Salomon One To Three Year Treasury Index includes only U.S. Treasury Notes
and Bonds with maturities one year or greater and less than three years.

Salomon World Government Bond Index

The Salomon World Government Bond Index is designed to provide a comprehensive
measure of total return performance of the domestic Government bond market of
thirteen countries. The index has been constructed with the aim of choosing an
"all inclusive" universe of institutionally traded fixed-rate bonds. The
selection of security types to be included in the index is made with the aim
of being as comprehensive as possible, while satisfying the criterion of
reasonable availability to domestic and international institutions and the
existence of complete pricing and market profile data.

S&P 500

The S&P 500 is a portfolio of 500 stocks designed to mimic the overall equity
market's industry weightings. Most, but not all, large capitalization stocks
are in the index. There are also some small capitalization names in the index.
The list is maintained by Standard & Poor's Corporation. It is market
capitalization weighted. Unlike the Russell indices, there are always 500
names in the S&P 500. Changes are made by Standard & Poor's as needed.

S&P Mid Cap 400 Index

The S&P Mid Cap 400 Index consists of 400 domestic stocks chosen for market
size, liquidity, and industry group representation. It is also a market-value
weighted index and was the first benchmark of mid cap stock price movement.

S&P/BARRA Mid Cap 400 Growth Index

The S&P/BARRA Mid Cap 400 Growth Index is constructed by dividing the stocks
in the S&P MidCap 400 Index according to a single attribute: price-to-book
ratios. The MidCap 400 Growth Index is composed of firms with higher
price-to-book ratios. Like the MidCap 400, the MidCap 400 Growth Index is
capitalization-weighted, meaning that each stock is weighted in the
appropriate index in proportion to its market value.

S&P 500 Ex South Africa Index

The S&P 500 Ex South Africa Index is the same as the S&P 500 Index excluding
companies that are on the Investor Responsibility Research Center (IRRC) list
of companies doing business in South Africa. This index is maintained by
Wilshire Associates.



                                      50
<PAGE>

Wilshire 5000 Equity Index

The Wilshire 5000 Equity Index measures performance of all US headquartered
equity securities with readily available price data. Approximately 6,000
capitalization weighted security returns are used to calculate the index.

                                      51
<PAGE>

                             FINANCIAL STATEMENTS

   
The Fund's Financial Statements for the fiscal year ended September 30, 1997,
including notes thereto and the report of Price Waterhouse LLP thereon are
incorporated herein by reference. A copy of the 1997 Annual Report will
accompany the delivery of this Statement of Additional Information. In the
1997 Annual Report, the Emerging Markets Value Portfolio is referred to as the
Emerging Markets Portfolio. The portfolio changed its name following the
printing of the Annual Report. In addition, the 1997 Annual Report includes
financial information for the Investment Class of the Special Purpose Fixed
Income Portfolio. Following the printing of the Annual Report, the Fund closed
the Investment Class of this portfolio. Accordingly, this portfolio has been
removed from the Investment Class prospectus.
    

                APPENDIX-DESCRIPTION OF SECURITIES AND RATINGS

I.  Description of Bond Ratings

Excerpts from Moody's Investors Service, Inc.'s Corporate Bond Ratings:

Aaa: judged to be the best quality; carry the smallest degree of investment
risk; Aa--judged to be of high quality by all standards; A: possess many
favorable investment attributes and are to be considered as higher medium
grade obligations; Baa: considered as lower medium grade obligations, i.e.,
they are neither highly protected nor poorly secured; Ba: B: protection of
interest and principal payments is questionable.

Caa: Bonds which are rated Caa are of poor standing. Such issues may be in
default or there may be present elements of danger with respect to principal
or interest. Ca: Bonds which are rated Ca represent obligations which are
speculative in a high degree. Such issues are often in default or have other
marked shortcomings. C: Bonds which are rated C are lowest rated class of
bonds and issues so rated can be regarded as having extremely poor prospects
of ever attaining any real investment standing.

Note: Moody's may apply numerical modifiers, 1,2 and 3 in each generic rating
classification from Aa through B in its corporate bond rating system. The
modifier 1 indicates that the security ranks in the higher end of its generic
rating category; the modifier 2 indicates a mid-range ranking; and the
modifier 3 indicates that the issue ranks in the lower end of its generic
rating category.

Excerpts from Standard & Poor's Corporation's Corporate Bond Ratings:

AAA: highest grade obligations; possess the ultimate degree of protection as
to principal and interest; AA: also qualify as high grade obligations, and in
the majority of instances differs from AAA issues only in small degree; A:
regarded as upper medium grade; have considerable investment strength but are
not entirely free from adverse effects of changes in economic and trade
conditions. Interest and principal are regarded as safe; BBB: regarded as
borderline between definitely sound obligations and those where the
speculative element begins to predominate; this group is the lowest which
qualifies for commercial bank investments.

BB, B, CCC, CC, C: Debt rated BB, B, CCC, CC and C is regarded, on balance, as
predominantly speculative with respect to capacity to pay interest and repay
principal in accordance with the terms of the obligation. BB indicates the
lowest degree of speculation and C the highest degree of speculation. While
such debt will likely have some quality and protective characteristics, these
are outweighed by large uncertainties or major risk exposures to adverse
conditions. CI: The rating CI is reserved for income bonds on which no
interest is being paid. D: Debt rated D is in payment default. The D rating
category is used when interest payments or principal payments are not made on
the date due even if the applicable grace period has not expired, unless S&P's
believes that such payments will be made during such grace period. The D
rating also will be used upon the filing of a bankruptcy petition if debt
service payments are jeopardized.


                                      52
<PAGE>


Plus(+) or Minus(-): The ratings from "AA" to "CCC" may be modified by the
addition of a plus or minus sign to show relative standing within the major
rating categories.

Excerpts from Fitch Investors Services, Inc. Corporate Bond Ratings:

AAA: Bonds considered to be investment grade and of the highest credit
quality. The obligor has an exceptionally strong ability to pay interest and
repay principal, which is unlikely to be affected by reasonably foreseeable
events.

AA: Bonds considered to be investment grade and of very high credit quality.
The obligor's ability to pay interest and repay principal is very strong,
although not quite as strong as bonds rated "AAA". Because bonds rated in the
"AAA" and "AA" categories are not significantly vulnerable to foreseeable
future developments, short term debt of these issuers is generally rated
"-,+".

A: Bonds considered to be investment grade and of high credit quality. The
obligor's ability to pay interest and repay principal is considered to be
strong, but may be more vulnerable to adverse changes in economic conditions
and circumstances than bonds with higher ratings.

BBB: Bonds considered to be investment grade and of satisfactory credit
quality. The obligor's ability to pay interest and repay principal is
considered to be adequate. Adverse changes in economic conditions and
circumstances, however, are more likely to have adverse impact on these bonds,
and therefore impair timely payment. The likelihood that the ratings of these
bonds will fall below investment grade is higher than for bonds with higher
ratings.

BB: Bonds are considered speculative. The obligor's ability to pay interest
and repay principal may be affected over time by adverse economic changes.
However, business and financial alternatives can be identified which could
assist the obligor in satisfying its debt service requirements.

B: Bonds are considered highly speculative. While bonds in this class are
currently meeting debt service requirements, the probability of continued
timely payment of principal and interest reflects the obligor's limited margin
of safety and the need for reasonable business and economic activity
throughout the life of the issue.

CCC: Bonds have certain identifiable characteristics which, if not remedied,
may lead to default. The ability to meet obligations requires an advantageous
business and economic environment.

CC: Bonds are minimally protected. Default in payment of interest and/or
principal seems probable over time.

C: Bonds are in imminent default in payment of interest or principal.

DDD, DD, and D: Bonds are in default on interest and/or principal payments.
Such bonds are extremely speculative and should be valued on the basis of
their ultimate recovery value in liquidation or reorganization of the obligor.
"DDD" represents the highest potential for recovery on the these bonds, and
"D" represents the lowest potential for recovery.

Plus (+) Minus(-) Plus and minus signs are used with a rating symbol to
indicate the relative position of a credit within the rating category. Plus
and minus signs, however, are not used in the "DDD", "DD", or "D" categories.

Excerpts from Duff & Phelps Corporate Bond Ratings:

AAA: Highest credit quality. The risk factors are negligible, being only
slightly more than for risk-free U.S.

                                      53
<PAGE>


Treasury debt.

AA+, AA, AA-: High credit quality. Protection factors are strong. Risk is
modest but may vary slightly from time to time of economic conditions.

A+, A, A-: Protection factors are average but adequate. However, risk factors
are more variable and greater in periods of economic stress.

BBB+,BBB, BBB-: Below average protection factors but still considered
sufficient for prudent investment. Considerable variability in risk during
economic cycles.

BB+, BB, BB-: Below investment grade but deemed likely to meet obligations
when due. Present or prospective financial protection factors fluctuate
according to industry conditions or company fortunes. Overall quality may move
up or down frequently within this category.

B+, B, B-: Below investment grade and possessing risk that obligations will
not be met when due. Financial protection factors will fluctuate widely
according to economic cycles, industry conditions and/or company fortunes.
Potential exists for frequent changes in the rating within this category or
into a higher or lower rating grade.

CCC: Well below investment grade securities. Considerable uncertainty exists
as to timely payment of principal, interest or preferred dividends.
Protections factors are narrow and risk can be substantial with unfavorable
economic/industry conditions, and/or with unfavorable company developments.

DD: Defaulted debt obligations. Issuer failed to meet scheduled principal
and/or interest payments.

DP: Preferred stock with dividend arrearage.

Description of Bond Ratings

Excerpts from Moody's Investors Service, Inc.'s Preferred Stock Ratings

aaa: An issue which is rated aaa is considered to be a top-quality preferred
stock. This rating indicates good asset protection and the least risk of
dividend impairment within the universe of preferred stocks. aa: An issue
which is rated aa is considered a high-grade preferred stock. This rating
indicates that there is reasonable assurance that earnings and asset
protection will remain relatively well maintained in the foreseeable future.
a: An issue which is rated a is considered to be an upper medium grade
preferred stock. While risks are judged to be somewhat greater than in the aaa
and aa classifications, earnings and asset protection are, nevertheless
expected to be maintained at adequate levels. baa: An issue which is rated baa
is considered to be medium grade, neither highly protected nor poorly secured.
Earnings and asset protection appear adequate at present but may be
questionable over any great length of time. ba: an issue which is rated ba is
considered to have speculative elements and its future cannot be considered
well assured. Earnings and asset protection may be very moderate and not well
safeguarded during adverse periods. Uncertainty of position characterizes
preferred stocks in this class. b: An issue which is rated b generally lacks
the characteristics of a desirable investment. Assurance of dividend payments
and maintenance of other terms of the issue over any long period of time may
be small. caa: An issue which is rated caa is likely to be in arrears on
dividend payments. This rating designation does not purport to indicate the
future status of payment. ca: An issue which is rated ca is speculative in a
high degree an is likely to be in arrears on dividends with little likelihood
of eventual payment. c: This is the lowest rated class of preferred of
preference stock. Issues so rated can be regarded as having extremely poor
prospects of ever attaining any real investment standing.


                                      54
<PAGE>

Note: Moody's may apply numerical modifiers 1,2 and 3 in each rating
classification from "aa "through "b" in its preferred stock rating system. The
modifier 1 indicated that the security ranks in the higher end of its generic
rating category; the modifier 2 indicates a mid-range raking; and the modifier
3 indicates that the issue ranks in the lower end of its generic rating
category.

Excerpts from Standard & Poor's Corporation's Preferred Stock Ratings

AAA: This is the highest rating that may be assigned by S&P's to a preferred
stock issue and indicates an extremely strong capacity to pay the preferred
stock obligations. AA: A preferred stock issue rated AA also qualifies as a
high quality fixed income security. The capacity to pay preferred stock
obligations is very strong, although not as overwhelming as for issues rated
AAA. A: An issue rated A is backed by a sound capacity to pay the preferred
stock obligations , although it is somewhat more susceptible to the adverse
effect of the changes in circumstances and economic conditions. BBB: An issue
rated BBB is regarded as backed by an adequate capacity to pay the preferred
stock obligations. Whereas it normally exhibits adequate protection parameter,
adverse economic conditions or changing circumstances are more likely to lead
to a weakened capacity to make payments for a preferred stock in this category
than for issues in the A category. BB,B,CCC: Preferred stock rated BB, B, and
CCC are regarded, on balance, as predominantly speculative with respect to the
issuer's capacity to pay preferred stock obligations. Bb indicates the lowest
degree of speculation and CCC the highest degree of speculation. While such
issues will likely have some quality and protective characteristics, these are
outweighed by large uncertainties of major risk exposures to adverse
conditions. CC: The rating CC is reserved for a preferred stock in arrears on
dividends or sinking fund payments but that is currently paying. C: A
preferred stock rated C is a non-paying issue. D: A preferred stock rated D is
a non-paying issue with the issuer in default on debt instruments.

Plus(+) or Minus(-): The ratings from "AA" for "B" may be modified by the
addition of a plus or minus sign to show relative standing within the major
rating categories.

Excerpts from Fitch Investors Services, Inc. Preferred Stock Ratings:

AAA: Preferred stocks assigned this rating are the highest quality. Strong
asset protection, conservative balance sheet ratios, and positive indications
of continued protection of preferred dividend requirements are prerequisites
for an "AAA" rating.

AA: Preferred of preference issues assigned this rating are good quality.
Asset protection and coverages of preferred dividends are considered adequate
and are expected to be maintained.

A: Preferred of preference issues assigned this rating are good quality. Asset
protection and coverages of preferred dividends are considered adequate and
are expected to be maintained.

BBB: Preferred or preference issues assigned this rating are reasonably safe
but lack the protections of the "A" to "AAA" categories. Current results
should be watched for possible of deterioration.

BB: Preferred or preference issues assigned this rating are considered
speculative. The margin of protection is slim or subject to wide fluctuations.
The loner-term financial capacities of the enterprises cannot be predicted
with assurance.

B: Issues assigned this rating are considered highly speculative. While
earnings should normally cover dividends, directors may reduce or omit payment
due to unfavorable developments, inability to finance, or wide fluctuations in
earnings.



                                      55
<PAGE>

CCC: Issues assigned this rating are extremely speculative and should be
assessed on their prospects in a possible reorganization. Dividend payments
may be in arrears with the status of the current dividend uncertain.

CC: Dividends are not currently being paid and may be in arrears. The outlook
for future payments cannot be assured.

C: Dividends are not currently being paid and may be in arrears. Prospects for
future payments are remote.

D: Issuer is in default on its debt obligations and has filed for
reorganization or liquidation under the bankruptcy law.

Plus (+) Minus (-) Plus and minus signs are used with a rating symbol to
indicate the relative position of a credit within the rating category. Plus
and minus signs, however, are not used in the "AAA", "CCC", "CC", "C", and "D"
categories.



                                      56



<PAGE>

   

                                   MAS FUNDS
                           PART C: OTHER INFORMATION

                        Post-Effective Amendment No. 46

    

Item 24.  Financial Statements and Exhibits:

     (a)  Part A - Financial Highlights
          Part B - The following audited financial statements as of 
                   September 30, 1997 and the report of the independent 
                   auditors, Price Waterhouse LLP, dated November 20, 1997 are 
                   incorporated by reference to the Statement of Additional
                   Information from Form N-30D filed on December 4, 1997 with 
                   Accession Number 0000893220-97-001894
                        Statement of Net Assets
                        Statement of Operations
                        Statement of Changes in Operations
                        Financial Highlights
                        Notes to Financial Statements
                        Report of Independent Accountants
                   The following audited financial statements as of 
                   September 30, 1997 and the report of the Independent 
                   auditors,  Price Waterhouse LLP, dated November 20, 1996 are
                   incorporated by reference to the Statement of Additional
                   Information from Form N-30D filed on December 3, 1997 with
                   Accession Number 0000903220-97-001887.
                        Statement of Net Assets
                        Statement of Operations
                        Statement of Changes in Operations
                        Financial Highlights
                        Notes to Financial Statements
                        Report of Independent Accountants
                         
     (b)  Additional Exhibits

   

          (1)           Amended and Restated Declaration of Trust as filed as
                        Exhibit 1 of the initial Registration Statement, as
                        filed on March 1, 1984.
          (1)(a)        Amendment No. 1 to Amended and Restated Declaration of
                        Trust, dated May 20, 1992 as filed as Exhibit 2 of
                        Post-Effective Amendment No. 25, as filed on January
                        28, 1993.
          (1)(b)        Amended and Restated Declaration of Trust, dated
                        November 18, 1993 as filed as Exhibit 1 of
                        Post-Effective Amendment No. 29, as filed on December
                        27, 1993.
          (1)(c)        Amended and Restated Agreement and Declaration of
                        Trust dated November 18, 1993, is incorporated by
                        reference to Exhibit 1 of Post-Effective Amendment
                        No. 42, as filed on July 15, 1996.
          (2)           By-Laws  as  filed  as   Exhibit  2  of  the   initial
                        Registration Statement, as filed on March 1, 1984.
          (2)(a)        By-Laws as filed as to Exhibit 2 of Post-Effective
                        Amendment No. 29, as filed on December 27, 1993.
          (2)(b)        Amended and Restated By-Laws dated November 21, 1996
                        are incorporated by reference to Exhibit (2)(b) of
                        Post-Effective Amendment No. 43, as filed on January
                        29, 1997.
          (3)           Not Applicable.
          (4)           Specimen of Security for the Global Fixed Income
                        Portfolio and the Balanced Portfolio as filed as
                        Exhibit 4 of Post-Effective Amendment No. 24 filed on
                        October 30, 1992.
          (4)(a)        Specimen of Security for the Growth Portfolio as filed
                        as Exhibit 4 of Post-Effective Amendment No. 26 filed
                        on June 28, 1993.
          (5)           Investment Advisory Agreement with Miller Anderson &
                        Sherrerd, LLP dated July 1, 1988 as filed as Exhibit 5
                        of Post-Effective Amendment No. 8.
          (5)(a)        Investment Advisory Agreement with Miller Anderson &
                        Sherrerd, LLP dated January 3, 1996 is incorporated by
                        reference to Exhibit (5)(a) of Post-Effective
                        Amendment No. 43, as filed January 29, 1997.

    
                                      C-1

<PAGE>

   

          (5)(b)        Investment Advisory Agreement with Miller Anderson &
                        Sherrerd, LLP dated May 31, 1997 is incorporated by
                        reference to Exhibit 5(b) of Post- Effective Amendment
                        No. 44, as filed on June 13, 1997.
          (6)           Distribution Agreement with MAS Fund Distribution,
                        Inc. dated April 13, 1993 as filed as Exhibit 6 of
                        Post-Effective Amendment No. 26, as filed on June 28,
                        1993.
          (6)(a)        Distribution Agreement with MAS Fund Distribution,
                        Inc. dated January 3, 1996 is incorporated by
                        reference to Exhibit (6)(a) of Post-Effective
                        Amendment No. 43, as filed January 29, 1997.
          (7)           Not Applicable.
          (8)           Custodian Agreement with State Street Bank & Trust
                        Company as filed as Exhibit 8 of the initial
                        Registration Statement, as filed on March 1, 1984.
          (8)(a)        Custodian Agreement with Morgan Stanley Trust Company
                        dated September 1, 1993 is incorporated by reference
                        to Exhibit 8(a) of Post-Effective Amendment No. 41
                        filed on January 30, 1996.
          (8)(b)        Custodian Agreement with United States Trust Company
                        of New York dated July 22, 1994 is incorporated by
                        reference to Exhibit 8(b) of Post-Effective Amendment
                        No. 41, as filed on January 30, 1996.
          (8)(c)        Amendment dated January 3, 1996 between Morgan Stanley
                        Trust Company and MAS Funds is incorporated by
                        reference to Exhibit 8(c) of Post-Effective Amendment
                        No. 41, as filed on January 30, 1996.
          (8)(d)        Deferred Compensation for MAS Funds Board of Trustees,
                        as amended, is incorporated by reference to Exhibit
                        (8)(c) of Post-Effective Amendment No. 44, as filed on
                        June 13, 1997.
          (8)(e)        Amendment dated July 22, 1994 to the Custody Agreement
                        between MAS Funds and United States Trust Company of
                        New York is filed herewith.
          (9)           Administration Agreement with The Vanguard Group dated
                        September, 1984 as filed as Exhibit 9 of Pre-Effective
                        Amendment No. 3, as filed on August 27, 1984.
          (9)(a)        Administration Agreement with Miller Anderson &
                        Sherrerd, LLP dated November 18, 1993 as filed as
                        Exhibit 9 of Post-Effective Amendment No. 29, as filed
                        on December 27, 1993.
          (9)(b)        Sub-Administration Agreement with United States Trust
                        Company of New York dated November 18, 1993 is filed
                        herewith.
          (9)(c)        Transfer Agency Agreement with United States Trust
                        Company of New York dated November 18, 1993, as
                        amended February 9, 1995 and November 18, 1996, is
                        filed herewith.

    

                                      C-2

<PAGE>

   

          (9)(d)        Administration Agreement with Miller Anderson &
                        Sherrerd, LLP dated January 3, 1996 is incorporated by
                        reference to Post-Effective Amendment No. 43, as filed
                        on January 29, 1997.
          (9)(e)        Investment Class Shareholder Service Agreement is
                        incorporated by reference to Exhibit 15(a) of
                        Post-Effective Amendment No. 41, as filed on January
                        30, 1996.
          (9)(f)        Investment Class Service Provider Agreement is
                        incorporated by reference to Exhibit 15(b) of
                        Post-Effective Amendment No. 40, as filed on December
                        1, 1995.
          (9)(g)        Amendment dated August, 1995 to the Transfer Agency
                        and Fund Sub-Administration Agreement between MAS
                        Funds and United States Trust Company, is filed
                        herewith.
          (10)          Opinion and Consent of Counsel dated August 23, 1984
                        is filed herewith.
          (11)          Consent of Independent Public Accountants is filed
                        herewith.
          (12)          Not Applicable.
          (13)          Not Applicable.
          (14)          Not Applicable.
          (15)          Distribution Plan relating to Adviser Class Shares is
                        incorporated by reference to Exhibit 15 of
                        Post-Effective Amendment No. 41, as filed on January
                        30, 1996.
          (16)          Performance Quotation Computation is filed herewith.
          (17)          Financial Data Schedules as of September 30, 1997 are 
                        filed herewith.
          (18)          Rule 18f-3 Multiple Class Plan is incorporated by
                        reference to Exhibit 18 of Post-Effective Amendment No.
                        41, as filed on January 30, 1996.
          (24)          Powers of Attorney for Joseph P. Healey, Joseph J.
                        Kearns, John H. Grady, Jr., Lorraine Truten, C. Oscar 
                        Morong, Jr., Thomas L. Bennett, James D. Schmid, 
                        Vincent R. McLean and Thomas P. Gerrity are filed 
                        herewith.

    

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

     Registrant is not controlled by or under common control with any person.

Item 26.  Number of Holders of Securities:

   

     As of December 31, 1997, the number of record holders of each class of
securities of Registrant was as follows:

    

                                      C-3

<PAGE>

   

                                                                   Number of
     Title of Class                                             Record Holders
     --------------                                             --------------
Institutional Class:

Advisory Foreign Fixed Income.............................................85
Advisory Mortgage.........................................................82
Emerging Markets Value (formerly Emerging Markets)........................98
Equity...................................................................488
Growth.....................................................................0
International Equity.....................................................557
Mid Cap Growth...........................................................713
Mid Cap Value............................................................334
Small Cap Value..........................................................386
Value...................................................................1089
Cash Reserves............................................................133
Domestic Fixed Income.....................................................62
Fixed Income............................................................1013
Fixed Income II...........................................................50
Global Fixed Income.......................................................48
High Yield...............................................................376
Intermediate Duration.....................................................53
International Fixed Income................................................50
Limited Duration.........................................................194
Mortgage-Backed Securities................................................20
Municipal.................................................................86
PA Municipal..............................................................31
Special Purpose Fixed Income.............................................243
Multi-Market Fixed Income..................................................8
Balanced.................................................................110
Multi-Asset-Class........................................................111
Balanced Plus..............................................................0
    
   
Investment Class:
Equity.....................................................................6
International Equity.......................................................0
Value.....................................................................24
Fixed Income..............................................................14
International Equity.......................................................7
High Yield................................................................15
Mid Cap Value.............................................................13
Domestic Fixed Income......................................................0
Multi-Asset-Class..........................................................6
    
                                      C-4

<PAGE>

   
Balanced......................................................................3

Adviser Class:
Equity........................................................................0
International Equity..........................................................0
Mid Cap Growth................................................................6
Mid Cap Value.................................................................0
Value........................................................................17
Domestic Fixed Income.........................................................0
Fixed Income.................................................................13
High Yield....................................................................4
Balanced......................................................................7
Multi-Asset-Class.............................................................0
    

Item 27. Indemnification:

Reference is made to Article V of Registrant's By-Laws dated November 18,
1993, which is incorporated by reference. Registrant hereby also makes the
undertaking consistent with rule 484 under the Securities Act of 1933, as
amended.

The Trust shall indemnify each of its Trustees and officers (including persons
who serve at the Trust's request as directors, officers or trustees of another
organization in which the Trust has any interest as a shareholder, creditor or
otherwise) (hereinafter referred to as a "Covered Person") against all
liabilities and expenses, including but not limited to amounts paid in
satisfaction of judgements, in compromise or as fines and penalties, and
counsel fees reasonably incurred by any Covered Person in connection with the
defense or disposition of any action, suit or other proceeding, whether civil
or criminal, or whether by or in the right of the Trust, before any court or
administrative or legislative body, in which such Covered Person may be or may
have been involved as a party or otherwise or with which such person may be or
may have been threatened, while in office or thereafter, by reason of any
alleged act or omission as a Trustee or officer, except with respect to any
matter as to which such Covered Person shall have been finally adjudicated in
any such action, suit or other proceeding not to have acted in good faith in
the reasonable belief that such Covered Person's action was in the best
interest of the Trust and except that no Covered Person shall be indemnified
against any liability to the Trust or its Shareholders to which such Covered
Person would otherwise be subject by reason of self-dealing, willful
misconduct or recklessness. Expenses, including counsel fees so incurred by
any such Covered Person, may be paid from time to time by the Trust in advance
of the final disposition of any such action, suit or proceeding on the
condition that the amounts so paid shall be repaid to the Trust if it is
ultimately determined that indemnification of such expenses is not authorized
under this Article.

                                      C-5

<PAGE>

Item 28.  Business and Other Connections of Investment Adviser:

Miller Anderson & Sherrerd, LLP (the "Adviser") is a Pennsylvania limited
liability partnership founded 1969. The Adviser provides investment services
to employee benefit plans, endowment funds, foundations and other
institutional investors.

The information required by this Item 28 with respect to each director,
officer, or partner of the Adviser together with information as to any other
business, profession, vocation or employment of a substantial nature engaged
in by such officers and directors during the past two years, is incorporated
by reference to Schedules B and D of Form ADV filed by the Adviser pursuant to
the Investment Advisers Act of 1940 (SEC file No. 801-10437).

Item 29.  Principal Underwriters:

     (a)  MAS Fund Distribution, Inc. acts as sole distributor of the
          Registrant's shares.

     (b)  The principal address for MAS Fund Distribution, Inc. and each
          partner and officer listed below is One Tower Bridge, West
          Conshohocken, PA 19428.

Name and Principal               Positions and               Positions and
Business Address             Offices with Underwriter    Offices with Registrant
- ----------------             ------------------------    -----------------------
   
Marna Whittington            Chief Executive Officer      N/A
Lorraine Truten              President                    Vice President
Ronald R. Reese              Secretary & Treasurer        N/A
Paul A. Frick                Compliance Officer           N/A
Gary G. Schlarbaum           Director                     N/A
Thomas L. Bennett            Director                     Trustee
James D. Schmid              Director                     President
Marion Mitchell              Client Account Manager       Assistant Secretary
    

     (c) Not applicable

Item 30.  Location of Accounts and Records:

     Books or other documents required to be maintained by Section 31(a) of
     the Investment Company Act of 1940, and the rules promulgated thereunder,
     are maintained as follows:

                                      C-6

<PAGE>

          The Chase Manhattan Bank
          One Chase Manhattan Plaza
          New York, N.Y. 10081
          (records relating to its function as custodian)

          Morgan Stanley Trust Company
          1 Pierrepont Plaza
          Brooklyn, New York 11201
          (records relating to its function as custodian)

          Chase Global Funds Services
          73 Tremont Street
          Boston, MA 02108-3913
          (records relating to its functions as sub-administrator,
          transfer agent and dividend disbursing agent)

          Miller Anderson & Sherrerd, LLP
          One Tower Bridge
          West Conshohocken, Pennsylvania 19428
          (records relating to its function as investment adviser)

Item 31.  Management Services

Not Applicable

Item 32.  Undertakings:

(a)  Not applicable

(b)       Registrant 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)       Registrant hereby undertakes to comply with the intent of the
          provisions of Section 16(c) of the Investment Company Act of 1940 in
          regard to shareholders' rights to call a meeting of shareholders for
          the purpose of voting on the removal of trustees and to assist in
          shareholder communications in such matters.

                                     C-7
<PAGE>
   
(d)       Registrant hereby undertakes to file a post-effective amendment to
          its Registration Statement within four to six months of the
          effective date of Post-Effective Amendment No. 42 that contains
          financial statements for the Balanced Plus Portfolio which need not
          be audited.

(e)       Registrant hereby undertakes to file a post-effective amendment to
          its Registration Statement within four to six months of the
          effective date of Post-Effective Amendment No. 45 that contains
          financial statements for the Multi-Market Fixed Income Portfolio
          which need not be audited.
    
                                     C-8
<PAGE>

                                  Signatures

   

          Pursuant to the requirements of the Securities Act of 1933, as
amended, and the Investment Company Act of 1940, as amended, the Registrant
certifies that it meets all of the requirements for the effectiveness of this
Registration Statement pursuant to Rule 485(b) under the Securities Act of
1933 and has duly caused this Post-Effective Amendment No. 46 to be signed on
its behalf by the undersigned, thereunto duly authorized, in the District of
Columbia on the 27th day of January 1998.
    

                                               MAS FUNDS

                                                       *
                                               By:_______________________
                                                   James D. Schmid, President

          Pursuant to the  requirements  of the Securities  Act of 1933,  this
Amendment  has been signed below by the  following  persons in the capacity on
the dates indicated.
<TABLE>
<CAPTION>
<S>                                                 <C>                              <C>
   
        *                                           Trustee                       January 27, 1998
- -------------------------------------------
Thomas L. Bennett

        *                                           Trustee                       January 27, 1998
- -------------------------------------------
Thomas P. Gerrity

        *                                           Trustee                       January 27, 1998
- -------------------------------------------
Joseph P. Healey

        *                                           Trustee                       January 27, 1998
- -------------------------------------------
Joseph J. Kearns

        *                                           Trustee                       January 27, 1998
- -------------------------------------------
Vincent R. McLean

        *                                           Trustee                       January 27, 1998
- -------------------------------------------
C. Oscar Morong, Jr.

        *                                           President                     January 27, 1998
- -------------------------------------------
James D. Schmid

 /s/ Michael Leary                                  Chief Financial Officer       January 27, 1998
- ----------------------------------
Michael Leary

    

</TABLE>

*By:   /s/ John H. Grady
       ------------------
       John H. Grady, Jr.
       Attorney-in-Fact

                                      C-9

<PAGE>

                                 EXHIBIT INDEX

<TABLE>
<CAPTION>

Exhibit                                                                                                    Page
<S>                                <C>                                                                        <C>
EX-99.B1              Amended and Restated Declaration of Trust as filed as Exhibit 1 of the
                      initial Registration Statement, as filed on March 1, 1984.
EX-99.B1(a)           Amendment No. 1 to Amended and Restated Declaration of Trust,
                      dated May 20, 1992 as filed as Exhibit 2 of Post-Effective Amendment
                      No. 25, as filed on January 28, 1993.
EX-99.B1(b)           Amended and Restated Declaration of Trust, dated November 18, 1993 as
                      filed as Exhibit of Post-Effective  AmendmentNo. 29, as filed on  December
                      27, 1993.
EX-99.B1(c)           Amended and Restated Agreement and Declaration of Trust dated November 18,
                      1993, as corrected by the Trustees on February 29, 1996, is incorporated
                      by reference to Exhibit 1 of Post-Effective Amendment No. 42, as filed
                      on July 15, 1996.
EX-99.B2              By-Laws as filed as Exhibit 2 of the initial Registration Statement, as
                      filed on March 1, 1984.
EX-99.B2(a)           By-Laws as filed as Exhibit 2 of Post-Effective Amendment No. 29, as
                      filed on December 27, 1993.
EX-99.B2(b)           Amended and Restated By-Laws dated November 21, 1996, are incorporated by
                      reference to Exhibit (2)(b) of Post-Effective Amendment No. 43, as filed
                      on January 29, 1997.
EX-99.B3              Not Applicable.
EX-99.B4              Specimen of Security for the Global Fixed Income Portfolio and the
                      Balanced Portfolio as filed as Exhibit 4 of Post-Effective Amendment
                      No. 24 filed on October 30, 1992.
EX-99.B4(a)           Specimen of Security for the Growth Portfolio as filed as Exhibit 4 of
                      Post-Effective Amendment No. 26 filed on June 28, 1993.
EX-99.B5              Investment Advisory Agreement with Miller Anderson &
                      Sherrerd, LLP dated July 1, 1988 as filed as Exhibit 5
                      of Post-Effective Amendment No. 8.
EX-99.B5(a)           Investment Advisory Agreement with Miller Anderson & Sherrerd, LLP dated
                      January 3, 1996 is incorporated by reference to Exhibit (5)(a) of
                      Post-Effective Amendment No. 43, as filed on January 29, 1997.
EX-99.B5(b)           Investment Advisory Agreement with Miller Anderson &
                      Sherrerd, LLP dated May 31, 1997 is incorporated by
                      reference to Exhibit 5(b) of Post-Effective Amendment
                      No. 44, as filed on June 13, 1997.
EX-99.B6              Distribution Agreement with MAS Fund Distribution, Inc. dated April 13,
                      1993 as filed as Exhibit 6 of Post-Effective Amendment No. 26, as filed
                      on June 28, 1993.
EX-99.B6(a)           Distribution Agreement with MAS Fund Distribution, Inc. dated January
                      3, 1996 is incorporated by reference to Exhibit (6)(a) of Post-Effective
                      Amendment No. 43, as filed on January 29, 1997.
EX-99.B7              Not Applicable.

</TABLE>

<PAGE>

<TABLE>
<CAPTION>

<S>                                  <C>

   

EX-99.B8              Custodian Agreement with State Street Bank & Trust Company as filed
                      as Exhibit 8 of the initial Registration Statement, as filed on
                      March 1, 1984.
EX-99.B8(a)           Custodian Agreement with Morgan Stanley Trust Company dated September 1,
                      1993 is incorporated by reference to Exhibit 8(a) of Post-Effective
                      Amendment No. 41 filed on January 30, 1996.
EX-99.B8(b)           Custodian Agreement with United States Trust Company of New York dated
                      July 22, 1994 is incorporated by reference to Exhibit 8(b) of Post-
                      Effective Amendment No. 41, as filed on January 30, 1996.
EX-99.B8(c)           Amendment dated January 3, 1996 between Morgan Stanley Trust Company and
                      MAS Funds is incorporated by reference to Exhibit 8(c) of Post-Effective
                      Amendment No. 41, as filed on January 30, 1996.
EX-99.B8(d)           Deferred  Compensation  Plan  for  MAS  Funds  Board  of Trustees, as
                      amended, is incorporated by reference to Exhibit  8(c) of  Post-Effective
                      Amendment No. 44, as filed on June 13, 1997.
EX-99.B8(e)           Amendment dated July 22, 1994 to the Custody Agreement between MAS Funds
                      and United States Trust Company of New York is filed herewith.
EX-99.B9              Administration Agreement with The Vanguard Group dated September,
                      1984 as filed as Exhibit 9 of Pre-Effective Amendment No. 3, as filed
                      on August 27, 1984.
EX-99.B9(a)           Administration Agreement with Miller Anderson & Sherrerd, LLP dated
                      November 18, 1993 as filed as Exhibit 9 of Post-Effective Amendment No.
                      29, as filed on December 27, 1993.
EX-99.B9(b)           Sub-Administration  Agreement  with United  States Trust Company of New
                      York  dated  November  18,  1993 is filed herewith.
EX-99.B9(c)           Transfer Agency Agreement with United States Trust Company of New York
                      dated November 18, 1993 and amended February 9, 1995 and November 18,
                      1996 is filed herewith.
EX-99.B9(d)           Administration Agreement with Miller Anderson & Sherrerd, LLP is dated
                      January 3, 1996 is incorporated by reference to Post-Effective Amendment
                      No. 43, as filed on January 29, 1997.
EX-99.B9(e)           Investment Class Shareholder Service Agreement is incorporated by
                      reference to Exhibit 15(a) of Post-Effective Amendment No. 41, as filed
                      on January 30, 1996.
EX-99.B9(f)           Investment Class Service Provider Agreement is incorporated by
                      reference to Exhibit 15(b) of Post-Effective Amendment No. 40, as filed
                      on December 1, 1995.
EX-99.B9(g)           Amendment dated August, 1995 to the Transfer Agency and Fund Sub-
                      Administration Agreements between MAS Funds and United States
                      Trust Company is filed herewith.
EX-99.B10             Opinion and Consent of Counsel dated August 23, 1984 is filed
                      herewith.
EX-99.B11             Consent of Independent Public Accountants is filed herewith.
EX-99.B12             Not Applicable.

</TABLE>
    

<PAGE>
<TABLE>
<CAPTION>

<S>                        <C>

   

EX-99.B13             Not Applicable.
EX-99.B14             Not Applicable.
EX-99.B15             Distribution Plan relating to Adviser Class Shares is
                      incorporated by reference to Exhibit 15 of
                      Post-Effective Amendment No. 41, as filed on January 30, 1996.
EX-99.B16             Performance Quotation Computation is filed herewith.
EX-99.B18             Rule 18f-3 Multiple Class Plan is incorporated by reference to Exhibit
                      18 of Post-Effective Amendment No. 41, as filed on January 30, 1996.
EX-99.B24             Powers of Attorney for Joseph P. Healey, Joseph J. Kearns, 
                      John H. Grady, Jr., Lorraine Truten, C. Oscar Morong, Jr.,
                      Thomas L. Bennett, James D. Schmid, Vincent R. McLean and Thomas
                      P. Gerrity are filed herewith.
EX-99.B27             Financial Data Schedules are filed herewith.
EX-99.B27.1           Advisory Foreign Fixed Income Portfolio.
EX-99.B27.2           Advisory Mortgage Portfolio.
EX-99.B27.3           Emerging Markets Portfolio.
EX-99.B27.4           Global Fixed Income Portfolio.
EX-99.B27.5           PA Municipal Portfolio, Institutional Class.
EX-99.B27.6           Small Cap Value Portfolio, Institutional Class.
EX-99.B27.7           Domestic Fixed Income Portfolio, Institutional Class.
EX-99.B27.8           International Fixed Income Portfolio, Institutional Class.
EX-99.B27.9A          Value Portfolio, Institutional Class.
EX-99.B27.9B          Value Portfolio, Investment Class.
EX-99.B27.9C          Value Portfolio, Adviser Class.
EX-99.B27.10A         Equity Portfolio, Institutional Class.
EX-99.B27.10B         Equity Portfolio, Investment Class.
EX-99.B27.11          Fixed Income Portfolio II, Institutional Class.
EX-99.B27.12          Cash Reserves Portfolio, Institutional Class.
EX-99.B27.13          Mortgage-Backed Securities Portfolio, Institutional Class.
EX-99.B27.14          Limited Duration Portfolio, Institutional Class.
EX-99.B27.15          Municipal Portfolio, Institutional Class.
EX-99.B27.16          Intermediate Duration Portfolio, Institutional Class.
EX-99.B27.17          International Equity Portfolio, Institutional Class.
EX-99.B27.18          Mid-Cap Growth Portfolio, Investment Class.
EX-99.B27.19          International Equity Portfolio, Investment Class.
EX-99.B27.20A         Mid-Cap Value Portfolio, Institutional Class.
EX-99.B27.20B         Mid-Cap Value Portfolio, Investment Class.
EX-99.B27.21A         Balanced Portfolio, Institutional Class.
EX-99.B27.21B         Balanced Portfolio, Investment Class.
EX-99.B27.21C         Balanced Portfolio, Adviser Class.
EX-99.B27.22A         High Yield Portfolio, Institutional Class.
EX-99.B27.22B         High Yield Portfolio, Investment Class.
EX-99.B27.22C         High Yield Portfolio, Adviser Class.
EX-99.B27.23A         Fixed Income Portfolio, Institutional Class.
EX-99.B27.23B         Fixed Income Portfolio, Investment Class.
EX-99.B27.23C         Fixed Income Portfolio, Adviser Class.
EX-99.B27.24A         Special Purpose Fixed Income Portfolio, Institutional Class.
EX-99.B27.24B         Special Purpose Fixed Income Portfolio, Investment Class.
EX-99.B27.25A         Multi-Asset-Class Portfolio, Institutional Class.
EX-99.B27.25B         Multi-Asset-Class Portfolio, Investment Class.
EX-99.B27.26          Mid-Cap Growth Portfolio, Adviser Class.

    
</TABLE>

<PAGE>

   

                 AMENDMENT TO "MUTUAL FUND CUSTODY AGREEMENT"
                               BETWEEN MAS FUNDS

                  AND UNITED STATES TRUST COMPANY OF NEW YORK
                              DATED JULY 22, 1994

    

         This Amendment is between United States Trust Company of New York and
MAS  Funds  with  respect  to the  Mutual  Fund  Custody  Agreement  ("Custody
Agreement"), which is hereby amended as follows:

Pursuant to Section 29 ("Amendments") of the Custody Agreement, Attachment A
is deleted and the following Attachment is added:

   

                                 ATTACHMENT A

<TABLE>
<CAPTION>

                     Portfolios Covered by This Agreement

    

         <S>      <C>                      
         1.       Equity Portfolio
         2.       Value Portfolio
         3.       Small Cap Value Portfolio (formerly, Small Capitalization Value Portfolio)
         4.       Growth Portfolio
         5.       Mid Cap Growth Portfolio (formerly, Emerging Growth Portfolio)
         6.       Fixed Income Portfolio
         7.       Fixed Income II Portfolio
         8.       Special Purpose Fixed Income Portfolio
         9.       High Yield Portfolio (formerly, High Yield Securities Portfolio)
         10.      Limited Duration Portfolio (formerly, Limited Duration Fixed Income Portfolio)
         11.      Intermediate Duration Portfolio (formerly, Intermediate Duration Fixed Income
                  Portfolio)
         12.      Mortgage-Backed Securities Portfolio
         13.      Balanced Portfolio
         14.      Cash Reserves Portfolio
         15.      Select Value Portfolio
         16.      Select Equity Portfolio
         17.      Domestic Fixed Income Portfolio (formerly, Select Fixed Income Portfolio)
         18.      Municipal Portfolio (formerly, Municipal Fixed Income Portfolio)
         19.      PA Municipal Portfolio (formerly, Pennsylvania Municipal Fixed Income Portfolio)
         20.      Multi-Asset-Class Portfolio * (formerly, Global Balanced Portfolio)
         21.      Mid Cap Value Portfolio (formerly, Mid Capitalization Value Portfolio)
         22.      Advisory Mortgage Portfolio (formerly, Mortgage Portfolio)
         23.      International Equity Portfolio**
         24.      Global Fixed Income Portfolio**
         25.      International Fixed Income Portfolio**
         26.      Emerging Markets Portfolio**
         27.      Advisory Foreign Fixed Income Portfolio ** (formerly, Foreign Fixed Income Portfolio)
         28.      MAS Pooled Repo Account

</TABLE>

<PAGE>

*        Agreements with both U.S. Trust and Morgan Stanley (U.S. Trust Performs
         all domestic custody and international settlement of bonds; Morgan
         Stanley performs international custody of foreign equity securities)

**       Cash Accounts only

In all other respects, the Custody Agreement is confirmed and shall continue
to be effective.

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be executed by their officer thereunto duly authorized as of this ___ day of
August, 1995. This Amendment will be effective immediately.

   

UNITED STATES TRUST                                   MAS FUNDS
COMPANY OF NEW YORK

By:  /s/ Donald P. Hearn                              By:  /s/ James D. Schmid
     -------------------                                   -------------------

Title:  Chairman                                      Title:  President
        --------                                              ---------
    


<PAGE>

   

                    FUND SUB-ADMINISTRATION AGREEMENT FUND

                                  (MAS Fund)

                  AGREEMENT made as of November 18, 1993 by and between Miller
Anderson & Sherrerd,  a Pennsylvania  limited partnership  ("MAS"), and United
States Trust Company of New York, a bank and trust company chartered under the
laws of the State of New York ("U.S. Trust").

                             W I T N E S S E T H:

    

                  WHEREAS, the MAS Funds (the "Fund") is registered as an
open-end, management investment company under the Investment Company Act of
1940, as amended (the "1940 Act"); and

                  WHEREAS, MAS is responsible for the provision of
administration and fund accounting services to the Fund pursuant to an
Agreement between MAS and the Fund dated as of November 18, 1993 (the "MAS
Administration Agreement"); and

                  WHEREAS, MAS wishes to retain U.S. Trust to provide certain
administration and fund accounting services with respect to the Fund, and U.S.
Trust is willing to furnish such services;

                  NOW, THEREFORE, in consideration of the premises and mutual
covenants herein contained, it is agreed between the parties hereto as
follows:

                  1.       Appointment and Delegation.

                           (a)      MAS hereby appoints U.S. Trust to provide
administration and fund accounting services for MAS for the benefit of the Fund,
subject to the supervision of MAS

<PAGE>

and the Board of Trustees of the Fund (the "Board"), for the period and on the
terms set forth in this Agreement. U.S. Trust accepts such appointment and
agrees to furnish the services herein set forth in return for the compensation
as provided in Paragraph 5 of this Agreement. The Fund currently consists of
the portfolios (each a "Portfolio" and, collectively, the "Portfolios")
identified in Schedule A hereto. MAS shall notify U.S. Trust in writing of
each additional Portfolio established by the Fund. Each new Portfolio shall be
subject to the provisions of this Agreement, except to the extent that said
provisions (including those relating to the compensation and expense payable
by the Fund) may be modified with respect to such new Portfolio in writing by
MAS and U.S. Trust at the time of the addition of such new Portfolio.

                           (b)      U.S. Trust is hereby authorized to use the
services of its wholly-owned subsidiary, Mutual Funds Service Company
("MFSC"), to perform any of the functions provided for hereunder; provided,
that such use shall in no way limit U.S. Trust's contractual rights and
obligations hereunder. Reference (except  under  Paragraph 2 hereof) to U.S.
Trust  herein shall be deemed to include MFSC.

                  2.       Representations and Warranties.

                           (a) U.S. Trust represents and warrants that:

                                    (i) it is a bank and trust company duly
chartered, organized and existing and in good standing under the laws of the
State of New York;

                                    (ii)    it is duly qualified to carry on its
business in the State of New York;

                                    (iii)   it is empowered under applicable
laws and by its Charter and By-Laws to enter into and perform this Agreement;

                                      -2-

<PAGE>

                                    (iv) all requisite corporate proceedings
have been taken to authorize U.S. Trust to enter into and perform this
Agreement;

                                    (v) it has, and will continue to have,
access to the facilities, personnel and equipment required to fully perform
its duties and obligations hereunder;

                                    (vi) no legal or administrative
proceedings have been instituted or threatened which would impair U.S. Trust's
ability to perform its duties and obligations under this Agreement; and

                                    (vii) its entrance into this Agreement
shall not cause a material breach or be in material conflict with any other
agreement or obligation of U.S. Trust or any law or regulation applicable to
it;

                           (b) MAS represents and warrants that:

                                    (i) it is a Pennsylvania limited
partnership, duly organized and existing and in good standing under the laws
of the Commonwealth of Pennsylvania;

                                    (ii) it is empowered under applicable laws
and by its Agreement of Limited Partnership to enter into and perform this
Agreement;

                                    (iii) all requisite proceedings have been
taken to authorize MAS to enter into and perform this Agreement; 

                                    (iv) the Fund is a Pennsylvania business
trust, duly organized and existing and in good standing under the laws of the
Commonwealth of Pennsylvania;

                                    (v) the Fund is an investment company
registered under the 1940 Act;

                                      -3-

<PAGE>

                                    (vi) a registration statement under the
Securities Act of 1933, as amended ("1933 Act") and the 1940 Act on Form N-1A
has been filed for the Fund and is currently effective, and will remain
effective during the term of this Agreement, and all necessary filings under
the laws of the states will be made and will be current during the term of
this Agreement;

                                    (vii) no legal or administrative
proceedings have been instituted or threatened which would impair MAS's
ability to perform its duties and obligations under this Agreement; and

                                    (viii) MAS's entrance into this Agreement
shall not cause a material breach or be in material conflict with any other
agreement or obligation of MAS or the Fund, or any law or regulation
applicable to either.

         3. Delivery of Documents.

         MAS will promptly furnish to U.S. Trust such copies, properly
certified or authenticated, of contracts, documents and other related
information that U.S. Trust may request or require to properly discharge its
duties. Such documents may include but are not limited to the following:

                  (a) Resolutions of the Board authorizing the appointment of
U.S. Trust to provide certain administration and fund accounting services to
MAS and the Fund;

                  (b) The Fund's Declaration of Trust, as amended
("Declaration");

                  (c) The Fund's By-Laws ("By-Laws"); 

                  (d) The Fund's Notification of Registration on Form N-8A
under the 1940 Act, as filed with the Securities and Exchange Commission
("SEC");

                                      -4-

<PAGE>

                  (e) The Fund's registration statement, including exhibits,
on Form N-1A under the 1933 Act and the 1940 Act, and all amendments thereto,
as filed with the SEC (the "Registration Statement");

                  (f) Copies of the Investment Advisory Agreement between the
Fund and MAS dated July 1, 1988 (the "Advisory Agreement") and the MAS
Administration Agreement;

                  (g) A copy of the custodian agreement dated November 18,
1986 between the Fund and Morgan Guaranty Trust Company of New York (Morgan
Guaranty) (the "Domestic Custodian Agreement"); and a copy of the Custodian
Agreement dated September 1, 1993 between the Fund and Morgan Stanley Trust
Company (Morgan Stanley) (the "International Custodian Agreement")
(together,Morgan Guaranty and Morgan Stanley are referred to herein as the
"Custodian");

                  (h) Opinions of counsel and auditors reports;

                  (i) The Fund's current Prospectuses and Statement of
Additional Information relating to all Portfolios and all amendments and
supplements thereto (such Prospectuses and Statement of Additional Information
and supplements thereto, as presently in effect and as from time to time
hereafter amended and supplemented, are herein called the "Prospectuses"); and

                  (j) Such other agreements as the Fund may enter into from
time to time, including securities lending agreements, futures and commodities
account agreements, brokerage agreements, and options agreements.

         4. Services Provided by U.S. Trust.

                                      -5-

<PAGE>

                  U.S. Trust will provide the following services, subject to
the control, direction and supervision of MAS and the Board and in compliance
with the objectives, policies and limitations set forth in the Fund's
Registration Statement, Declaration and By-Laws, applicable laws and
regulation, and all resolutions and policies adopted by the Board:

                  (a) Fund Administration. U.S. Trust will provide the fund
administration services described in Schedule B, hereto.

                  (b) Fund Accounting. U.S. Trust shall provide the fund
accounting services described in Schedule C, hereto. 

                  (c) U.S. Trust will also:

                                    (i) provide office facilities with respect
to the provision of the services contemplated herein (which may be in the
offices of U.S. Trust or a corporate affiliate of U.S. Trust);

                                    (ii) provide the services of individuals
to serve as officers of the Fund who will be designated by U.S. Trust and
elected by the Fund's Board;

                                    (iii) provide or otherwise obtain
personnel sufficient, in U.S. Trust's sole discretion, for provision of the
services contemplated herein;

                                    (iv) furnish equipment and other materials
which U.S. Trust, in its sole discretion, believes are necessary or desirable
for provision of the services contemplated herein; and

                                    (v) keep records relating to the services
provided hereunder in such form and manner as set forth in this Agreement and
the Schedules hereto and as U.S. Trust may otherwise deem appropriate or
advisable, all in accordance with the 1940 Act. To the extent

                                      -6-

<PAGE>

required by Section 31 of the 1940 Act and the rules thereunder, U.S. Trust
agrees that all such records prepared or maintained by it relating to the
services provided hereunder are the property of the Fund and will be preserved
for the periods prescribed under Rule 31a-2 under the 1940 Act, maintained at
the Fund's expense, and made available in accordance with such Section and
rules. U.S. Trust further agrees to surrender promptly to the Fund upon its
request and cease to retain in its records and files those records and
documents created and maintained by U.S. Trust pursuant to this Agreement.

         5. Fees; Expenses; Expense Reimbursement.

                  (a) As compensation for the services rendered to MAS and the
Fund pursuant to this Agreement, MAS shall pay U.S. Trust such compensation as
is agreed to in writing from time to time by the parties hereto.

                  (b) For the purposes of determining any fees calculated by
reference to the Fund's assets, the value of the Fund's net assets shall be
computed as required by its Prospectuses, generally accepted accounting
principles and resolutions of the Board.

                  (c) U.S. Trust will from time to time employ or associate
with such person or persons as may be appropriate to assist U.S. Trust in the
performance of this Agreement. Such persons or persons may be officers and
employees who are employed or designated as officers by both U.S. Trust and
the Fund. The compensation of such person or persons for such employment shall
be paid by U.S. Trust and no obligation will be incurred by or on behalf of
the Fund in such respect.

                  (d) U.S. Trust will bear all of its own expenses in
connection with its performance of services under this Agreement except as
otherwise agreed to by the parties

                                      -7-

<PAGE>

hereto. MAS agrees to promptly reimburse U.S. Trust for any equipment and
supplies specially ordered by or for the Fund through U.S. Trust and for any
other expenses not contemplated by this Agreement that U.S. Trust may incur on
the Fund's behalf at MAS's or the Fund's request or as consented to by MAS or
by the Fund. Such other expenses to be incurred in the operation of the Fund
and to be borne by the Fund include, but are not limited to: taxes; interest;
SEC and state blue sky registration and qualification fees, levies, fines and
other charges; charges and expenses of custodians; advisory fees; insurance
premium, including fidelity bond premiums; auditing and legal expenses;
expenses of typesetting and printing of Prospectuses for regulatory purposes
and for distribution to current shareholders of the Fund (the Fund's
distributor to bear the expense of all other printing, production, and
distribution of Prospectuses and marketing materials); expenses of
typesetting, printing and production costs of shareholders' reports and proxy
statements and materials; costs and expenses of Fund stationery and forms;
costs associated with shareholder and Board meetings; and any extraordinary
Fund expenses. In addition, U.S. Trust may utilize one or more independent
pricing services, approved from time to time by the Board, to obtain
securities prices and to act as backup to the primary pricing services, in
connection with determining the net asset value of the Fund, and the Fund will
reimburse U.S. Trust for the Fund's share of the cost of such services based
upon the actual usage or a pro rata estimate of the use of the services for
the benefit of the Fund.

         6. Proprietary and Confidential Information.

                  U.S. Trust agrees on behalf of itself and its employees to
treat confidentially and as proprietary information of the Fund, all records
and other information relative to the Fund, and to not use such records and
information for any purpose other than performance of U.S. Trust's

                                      -8-

<PAGE>

responsibilities and duties hereunder. U.S. Trust may seek a waiver of such
confidentiality provisions by furnishing reasonable prior notice to the Fund
and obtaining approval in writing from the Fund, which approval shall not be
unreasonably withheld and may not be withheld where U.S. Trust may be exposed
to civil or criminal contempt proceedings for failure to comply, when
requested to divulge such information by duly constituted authorities. Waivers
of confidentiality are automatically effective without further action by U.S.
Trust with respect to Internal Revenue Service levies, subpoenas and similar
actions, or with respect to any request by the Fund.

         7. Duties, Responsibilities and Limitation of Liability.

                  (a) In the performance of its duties  hereunder,  U.S. Trust
shall be obligated, as applicable, to exercise the due care and diligence of a
mutual fund accounting agent and administrator, and in all events to act in
good faith in performing the services provided for under this Agreement. In
performing its services hereunder, U.S. Trust shall be entitled to rely on any
oral or written instructions, notices or other communications from the Fund
and its Custodian, officers and directors, investors, agents and other service
providers which U.S. Trust reasonably believes to be genuine, valid and
authorized. U.S. Trust shall also be entitled to rely on the advice and
opinions of outside legal counsel retained by the Fund, as necessary or
appropriate.

                  (b) Subject to the foregoing, U.S. Trust shall not be liable
for any error of judgment or mistake of law or for any loss or expense
suffered by the Fund, in connection with the matters to which this Agreement
relates, except for a loss or expense resulting from willful misfeasance, bad
faith or gross negligence on U.S. Trust's part in the performance of its
duties or from reckless disregard by U.S. Trust of its obligations and duties
under this Agreement. Any

                                      -9-

<PAGE>

officer, director, partner, employee or agent of the Fund who is also an
officer, director, partner, employee or agent of U.S. Trust shall be deemed to
be rendering services to or acting solely for the Fund, except when rendering
services or business in connection with U.S. Trust's duties hereunder.

                  (c) Subject to Paragraph 7(b) above, U.S. Trust shall not be
responsible for, and MAS shall indemnify and hold U.S. Trust harmless from and
against, any and all losses, damages, costs, reasonable attorneys' fees and
expenses, payments, expenses and liabilities arising out of or attributable
to:

                           (i) all actions of U.S. Trust or its officers or
agents required to be taken pursuant to this Agreement;

                           (ii) the reliance on or use by U.S. Trust or its
officers or agents of information, records or documents which are received by
U.S. Trust or its officers or agents and furnished to it or them by or on
behalf of MAS or the Fund, and which have been prepared or maintained by the
Fund, MAS or any other third party on behalf of MAS or the Fund;

                           (iii) MAS's refusal or failure to comply with the
terms of this Agreement or MAS's lack of good faith, or its actions, or lack
thereof, involving gross negligence or will misfeasance;

                           (iv) the breach of any representation or warranty
of MAS hereunder; or

                           (v) the offer or sale of shares by the Fund and/or
its distributor (a) in violation of any requirement under the federal
securities laws or regulations or the securities laws or regulations of any
state, or (b) in violation of any stop order or other

                                     -10-

<PAGE>

determination or ruling by any federal agency or any state agency with respect
to the offer or sale of such shares in such state resulting from activities,
actions, or omissions by the Fund or its distributor or existing or arising
out of activities, actions or omissions by or on behalf of the Fund prior to
the effective date of this Agreement.

                  (d) U.S. Trust shall indemnify and hold MAS harmless from
and against any and all losses, damages, costs, charges, reasonable attorneys'
fees and expenses, payments, expenses and liabilities arising out of or
attributable to U.S. Trust's refusal or failure to comply with the terms of
this Agreement, U.S. Trust's breach of any representation or warranty made by
it herein, or U.S. Trust's lack of good faith, or acts involving gross
negligence, willful misfeasance or reckless disregard of its duties.

         8. Term.

                  This Agreement shall become effective on the date that MAS
first assumes responsibility for providing administrative services to the Fund
pursuant to the MAS Administration Agreement. This Agreement shall continue in
effect unless terminated by either party on 90 days' prior written notice.
Upon termination of this Agreement, MAS shall pay to U.S. Trust such
compensation and any reimbursable expenses as may be due under the terms
hereof as of the date of termination or the date that the provision of
services under this Agreement by U.S. Trust ceases, whichever is later.

         9. Hiring of Employees.

                  MAS and U.S. Trust agree that they will not enter into
discussions of employment or make offers of employment to each others'
employees without written approval from the other.

                                     -11-

<PAGE>

         10. Notices.

                  Any notice required or permitted hereunder shall be in
writing and shall be deemed to have been given when delivered in person or by
certified mail, return receipt requested, to the parties at the following
address (or such other address as a party may specify by notice to the other):

         If to MAS:

                           Miller, Anderson & Sherrerd
                           One Tower Bridge
                           West Conshohocken, PA 19428-0868
                           Attn:   Ms. Lorraine Truten
                           FAX:    (215) 940-0652

                  with a copy to:

                           Richard W. Grant, Esquire
                           Morgan, Lewis & Bockius
                           2000 One Logan Circle
                           Philadelphia, PA  19103
                           FAX:    (215) 963-5299

         If to U.S. Trust:

                           114 West 47th Street
                           New York, New York  10036
                           Attn:   Division Director, Mutual Funds Division
                           FAX:    (212) ___________

                  with a copy to:

                           Mutual Funds Service Company
                           73 Tremont Street
                           Boston, Massachusetts  02108
                           Attn:   Karl Hartmann,
                                   Vice President and General Counsel
                           FAX:    (617) 557-8616

                                     -12-

<PAGE>

Notice shall be effective upon receipt, if by mail, on the date of personal
delivery, if by private messenger, courier service or otherwise, or upon
confirmed receipt of telex or facsimile, whichever occurs first.

         11. Assignability.

                  This Agreement shall not be assigned by any of the parties
hereto without the prior consent in writing of the other party; provided,
however, that U.S. Trust may in its own discretion and without limitation or
prior consent of MAS or the Fund, whenever and on such terms and conditions as
U.S. Trust deems necessary or appropriate, subcontract, delegate or assign its
rights, duties, obligations and liabilities to its subsidiaries or affiliates;
provided further, that any such subcontract, agreement or understanding shall
not discharge U.S. Trust or its affiliates or subsidiaries, as the case may
be, from the obligations hereunder. Similarly, U.S. Trust or its affiliated
subcontractor, designee, or assignee may, at its discretion, without notice to
the Fund, enter into such subcontracts, agreements and understandings,
whenever and on such terms and conditions as U.S. Trust or they deem necessary
or appropriate to perform services hereunder, with non-affiliated third
parties; provided, however, that such subcontract, agreement or understanding
shall not discharge U.S. Trust, or its subcontractor, designee, or assignee,
as the case may be, from U.S. Trust's obligations hereunder.

         12. Waiver.

                  The failure of a party to insist upon strict adherence to
any term of this Agreement on any occasion shall not be considered a waiver
nor shall it deprive such party of the right thereafter to insist upon strict
adherence to that term or any term of this Agreement. Any waiver must be in
writing signed by the waiving party.

                                     -13-

<PAGE>

         13. Force Majeure.

         U.S. Trust shall not be responsible or liable for any failure or
delay in performance of its obligations under this Agreement arising out of or
caused, directly or indirectly, by circumstances beyond its reasonable
control, including without limitation, acts of God, earthquakes, fires,
floods, wars, acts of civil or military authorities, or governmental actions,
nor shall any such failure or delay give MAS the right to terminate this
Agreement.

         14. Amendments.

         This Agreement may be modified or amended from time to time by mutual
written agreement between the parties. No provision of this Agreement may be
changed, discharged or terminated orally, but only by an instrument in writing
signed by the party against which enforcement of the change, discharge or
termination is sought.

         15. Severability.

         If any provision of this Agreement is invalid or unenforceable, the
balance of the Agreement shall remain in effect, and if any provision is
inapplicable to any person or circumstances it shall nevertheless remain
applicable to all other persons and circumstances.

         16. Governing Law.

         This Agreement shall be governed by the laws of the State of
Delaware.

                                     -14-

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have cause this Agreement to
be executed by their officers designated below as of the date first written
above.

                                   MILLER ANDERSON & SHERRERD

                                   By:      /s/James D. Schmid
                                            ---------------------------
                                   Name:    James D. Schmid
                                   Title:   Partner

                                   UNITED STATES TRUST COMPANY OF NEW YORK

                                   By:      /s/Donald P. Hearn
                                            ---------------------------
                                   Name:    Donald P. Hearn
                                   Title:   EVP

                                     -15-

<PAGE>

                                  SCHEDULE A
                LISTING OF PORTFOLIOS SUBJECT TO THIS AGREEMENT

1.       Equity Portfolio

2.       Value Portfolio

3.       Small Capitalization Value Portfolio

4.       Growth Portfolio

5.       Emerging Growth Portfolio

6.       Fixed Income Portfolio

7.       Fixed Income II Portfolio

8.       Special Purpose Fixed Income Portfolio

9.       High Yield Securities Portfolio

10.      Limited Duration Fixed Income Portfolio

11.      Intermediate Duration Fixed Income Portfolio

12.      Mortgage-Backed Securities Portfolio

13.      Balanced Portfolio

14.      International Equity Portfolio

15.      Emerging Markets Portfolio

16.      Global Fixed Income Portfolio

17.      International Fixed Income Portfolio

18.      Cash Reserves Portfolio

19.      Select Value Portfolio

20.      Select Equity Portfolio


                                     -16-

<PAGE>

21.      Select Fixed Income Portfolio

22.      Municipal Fixed Income Portfolio

23.      Pennsylvania Municipal Fixed Income Portfolio

                                     -17-

<PAGE>

                                  SCHEDULE B

              GENERAL DESCRIPTION OF FUND ADMINISTRATION SERVICES

I.       Financial and Tax Reporting

                  In  accordance  with  specific   procedures  and  guidelines
established  in writing by the parties  hereto from time to time,  U.S.  Trust
will provide the following administrative services:

                  A.       Prepare agreed-upon management reports and Board
                           materials, such as unaudited financial statements,
                           distribution summaries, and deviations from
                           mark-to-market to amortized cost valuation for
                           money market portfolios.

                  B.       Report Fund performance to outside services as
                           directed by Fund management.

                  C.       Calculate dividend and capital gain distributions
                           in accordance with distribution policies detailed
                           in the Fund's Prospectuses. Assist Fund management
                           in making final determinations of distribution
                           amounts.

                  D.       Estimate and recommend year-end dividend and
                           capital gain distributions necessary to establish
                           the Fund's status as a regulated investment company
                           ("RIC") under Section 4982 of the Internal Revenue
                           Code of 1986, as amended (the "Code") regarding
                           minimum distribution requirements.

                  E.       Prepare and file the Fund's Federal tax return on
                           Form 1120-RIC along with all state and local tax
                           returns, where applicable. Prepare and file Federal
                           Excise Tax Return (Form 8613).

                                     -18-

<PAGE>

                  F.       Prepare and file the Fund's semi-annual reports on
                           Form N-SAR with the SEC.

                  G.       Prepare and coordinate printing of Fund's
                           semi-annual and annual reports to shareholders.

                  H.       File copies of every financial report to
                           shareholders with the SEC under Rule 30b2-1 under
                           the 1940 Act.

                  I.       Notify shareholders as to what portion, if any, of
                           the distributions made by the Fund during the prior
                           fiscal year were exempt-interest dividends under
                           Section 852(b)(5)(A) of the Code.

                  J.       Provide Form 1099-MISC to persons other than
                           corporations (i.e., Trustees) to whom the Fund paid
                           more than $600 during the year.

                  K.       Prepare and file State Expense Limitation Report(s)
                           (if applicable).

                  L.       Provide financial information for Fund proxies and
                           Prospectuses.

II.      Portfolio Compliance

                  In  accordance  with  specific   procedures  and  guidelines
established  in writing from time to time by the parties  hereto,  U.S.  Trust

will:

                  A.       Assist with monitoring each Portfolio's compliance
                           with investment restrictions (e.g., issuer or
                           industry diversification) listed in the
                           Prospectuses.

                  B.       Assist with monitoring each Portfolio's compliance
                           with the requirements of the Code Section 851 for
                           qualification as RICs.

                                     -19-

<PAGE>

                  C.       Assist with monitoring the investment adviser's
                           compliance with Board directives such as "Approved
                           Issuers Listings for Repurchase Agreements," Rule
                           2a-7 procedures for money market funds and Rule
                           17a-7, Rule 17e-a and Rule 12d3-1 procedures.

                  D.       Mail quarterly requests for "Securities
                           Transactions Reports" to the Fund's Board, Officers
                           and other "access persons" under the terms of the
                           Fund's Code of Ethics and SEC regulations.

III.     Registration and Corporate Governance

                  A.       Prepare and file post-effective amendments to the
                           Fund's Registration Statement, and prepare and file
                           supplements as needed.

                  B.       Prepare and file proxy materials and administer
                           shareholder meetings.

                  C.       Prepare and file Rule 24f-2 Notices.

                  D.       Prepare and file all state registrations of the
                           Fund's securities, including annual renewals,
                           registering new Portfolios, preparing and filing
                           sales reports, filing copies of the Registration
                           Statement and Prospectuses, and increasing
                           registered amounts of securities in individual
                           states.

                  E.       Prepare Board materials for all Board meetings.

IV.      General Administration

                  A.       Furnish officers of the Fund, subject to Board
                           approval.

                  B.       In accordance with specific procedures and
                           guidelines established in writing from time to time
                           by the parties hereto, U.S. Trust will prepare Fund
                           and Portfolio expense projections, and establish
                           and review accruals

                                     -20-

<PAGE>

                           on a periodic basis, including expenses based on a
                           percentage of the Fund's average daily net assets
                           and expenses based on actual charges annualized and
                           accrued daily (i.e., audit fees, registration fees,
                           Trustees' fees).

                  C.       For new Portfolios, obtain Employer Identification
                           Number and CUSIP number. Estimate organizational
                           costs and expenses, and monitor against actual
                           disbursements.

                  D.       Coordinate all communications and data collection
                           pertaining to any regulatory examinations and
                           yearly audits by independent accountants.

                                     -21-

<PAGE>

                                  SCHEDULE C
                    DESCRIPTION OF FUND ACCOUNTING SERVICES

I.       General Description

                  In accordance with specific procedures and guidelines
established in writing from time to time by the parties hereto, U.S. Trust
shall provide the following accounting services to the Fund on behalf of MAS:

                  A.       Maintenance of the books and records and accounting
                           controls for the Fund's assets, including records
                           of all securities transactions;

                  B.       Calculation and transmission of each Portfolio's
                           net asset value to the NASD source for publication
                           of prices in accordance with the prospectus and to
                           such other entities as directed by MAS;

                  C.       Accounting for dividends and interest received and
                           distributions made by the Fund;

                  D.       Production of transaction data, financial reports
                           and such other periodic and special reports as the
                           Board may reasonably request;

                  E.       Preparation of financial statements for the
                           semi-annual and annual reports and other
                           shareholder communications;

                  F.       Liaison with the Fund's independent auditors;

                  G.       Monitoring and administration of arrangements with
                           the Fund's custodian and depository banks; and

                  H.       Furnishing the following reports.

II.      Domestic Fund Accounting Daily Reports

                                     -22-

<PAGE>

                  U.S. Trust will supply MAS with the following reports on a 
                  daily basis:

                  A.       General Ledger Reports
                           1.       Trial Balance Report
                           2.       General Ledger Activity Report

                  B.       Portfolio Reports
                           1.       Portfolio Reports
                           2.       Cost Lot Report
                           3.       Purchase Journal
                           4.       Sell/Maturity Journal
                           5.       Amortization/Accretion Report
                           6.       Maturity Projection Report

                  C.       Pricing Reports
                           1.       Pricing Report
                           2.       Pricing Report by Market Value
                           3.       Pricing Variance by Percentage Change
                           4.       NAV Report
                           5.       NAV Proof Report
                           6.       Money Market Pricing Report

                  D.       Accounts Receivable/Payable Reports
                           1.       Accounts Receivable for Investments Report
                           2.       Accounts Payable for Investments Report
                           3.       Interest Accrual Report

                                     -23-

<PAGE>

                           4.       Dividend Accrual Report

                  E.       Other Reports
                           1.       Dividend Computation Report
                           2.       Cash Availability Report
                           3.       Settlement Journal

III.     International Fund Accounting Daily Reports

                  U.S. Trust will supply MAS with the following reports on a 
                  daily basis:

                  A.       General Ledger
                           1.       Trail Balance Report
                           2.       General Ledger Activity Report

                  B.       Portfolio Reports
                           1.       Portfolio Report by Sector
                           2.       Cost Lot Report
                           3.       Purchase Journal
                           4.       Sell/Maturity Journal

                  C.       Currency Reports
                           1.       Currency Purchase/Sales Journal
                           2.       Currency Valuation Report

                  D.       Pricing Reports
                           1.       Pricing Report by Country
                           2.       Pricing Report by Market Value
                           3.       Price Variance by Percentage Change

                                     -24-

<PAGE>

                           4.       NAV Report
                           5.       NAV Proof Report

                  E.       Accounts Receivable/Payable Reports
                           1.       Accounts Receivable for Investments 
                                    Sold/Matured
                           2.       Accounts Payable for Investments Purchased
                           3.       Accounts Receivable for Forward Exchange 
                                    Contracts
                           4.       Accounts Payable for Forward Exchange 
                                    Contracts
                           5.       Interest Receivable Valuation
                           6.       Interest Recoverable Withholding Tax
                           7.       Dividends Receivable Valuation
                           8.       Dividends Recoverable Withholding Tax

                  F.       Other Reports
                           1.       Exchange Rate Report

IV.      Monthly Fund Accounting Reports

                  U.S. Trust will provide MAS with the following reports on a 
                  monthly basis:

                  A.       Standard Reports
                           1.       Cost Proof Report
                           2.       Transaction History Report
                           3.       Realized Gain/Loss Report
                           4.       Interest Record Report
                           5.       Dividend Record Report
                           6.       Broker Commission Totals

                                     -25-

<PAGE>

                           7.       Broker Principal Trades
                           8.       Shareholder Activity Report
                           9.       Fund Performance Report
                           10.      SEC Yield Calculation Work Sheet

                  B.       International Reports
                           1.       Forward Contract Transaction History Report
                           2.       Currency Gain/Loss Report

                                     -26-


<PAGE>

                           TRANSFER AGENCY AGREEMENT

                                  (MAS Funds)

         AGREEMENT made as of November 18, 1993 by and between MAS Funds, a
Pennsylvania business trust (the "Fund"), and United States Trust Company of
New York, a bank and trust company chartered under the laws of the State of
New York ("U.S. Trust").

                             W I T N E S S E T H:

         WHEREAS, the Fund is registered as an open-end, management investment
company under the Investment Company Act of 1940, as amended (the 111940
Act"); and

         WHEREAS, the Fund wishes to retain U.S. Trust to provide transfer
agent and dividend disbursing services with respect to the Fund, and U.S.
Trust is willing to furnish such services;

         NOW, THEREFORE, in consideration of the premises and mutual covenants
herein contained, it is agreed between the parties hereto as follows:

         1.       Appointment and Delegation.

                  (a) The Fund hereby appoints U.S. Trust to provide transfer
agent and dividend disbursing services for the Fund, subject to the
supervision of the Board of Trustees of the Fund (the "Board"), for the period
and on the terms set forth in this Agreement. U.S. Trust accepts such
appointment and agrees to furnish the services herein set forth in return for
the compensation as provided in Paragraph 5 of this Agreement. The Fund
currently consists of the portfolios (each a "Portfolio" and, collectively,
the "Portfolios") identified in Schedule B hereto.


<PAGE>

The Fund shall notify U.S. Trust in writing of each additional Portfolio
established by the Fund. Each new Portfolio shall be subject to the provisions
of this Agreement, except to the extent that said provisions (including those
relating to the compensation and expenses payable by the Fund) may be modified
with respect to such new Portfolio in writing by the Fund and U.S. Trust at
the time of the addition of such new Portfolio.

                  (b) U.S. Trust is hereby authorized to use the services of
its wholly-owned subsidiary, Mutual Funds Service Company ("MFSCII), to
perform any of the functions provided for hereunder; provided that such use
shall in no way limit U.S. Trust's contractual rights and obligations
hereunder. Reference (except under Paragraph 2 hereof) to U.S. Trust herein
shall be deemed to include MFSC.

         2.       Representations and Warranties:

                  (a)      U.S. Trust represents-and warrants that:

                           (i) it is a bank and trust company duly chartered,
organized and existing and in good standing under the laws of the State of New
York;

                           (ii) it is duly qualified to carry on its business
in the State of New York;

                           (iii) it is empowered under applicable laws and by
its Charter and By-Laws to enter into and perform this Agreement;

                           (iv) all requisite corporate proceedings have been
taken to authorize U.S. Trust to enter into and perform this Agreement;

                                       2

<PAGE>

                           (v) it has, and will continue to have, access to
the facilities, personnel and equipment required to fully perform its duties
and obligations hereunder;

                           (vi) no legal or administrative proceedings have
been instituted or threatened which would impair U.S. Trust's ability to
perform its duties and obligations under this Agreement; and

                           (vii) its entrance into this Agreement shall not
cause a material breach or be in material conflict with any other agreement or
obligation of U.S. Trust or any law or regulation applicable to it;

                  (b)  The Fund represents and warrants that:

                           (i) it is a Pennsylvania business trust, duly
organized and existing and in good standing under the laws of the Commonwealth
of Pennsylvania;

                           (ii) it is empowered under applicable laws and by
its Declaration of Trust ("Declaration") and By-Laws ("By-Laws") to enter into
and perform this Agreement;

                           (iii) all requisite proceedings have been taken to
authorize the Fund to enter into and perform this Agreement;

                           (iv) it is an investment company currently and
properly registered under the 1940 Act;

                           (v) a registration statement under the Securities
Act of 1933, as amended (111933 Act") and the 1940 Act on Form N-1A has been
filed and is currently effective, and will remain effective during the term of
this Agreement, and all necessary filings under the laws of the states will be
made and will be current during the term of this Agreement;

                                       3

<PAGE>

                           (vi) no legal or administrative proceedings have
been instituted or threatened which would impair its ability to perform its
duties and obligations under this Agreement; and

                           (vii) its entrance into this Agreement shall not
cause a material breach or be in material conflict with any other agreement or
obligation of the Fund, or any law or regulation applicable to it.

                  3. Delivery of Documents.  The Fund will promptly furnish to
U.S. Trust such copies, properly certified or authenticated, of contracts,
documents and other related information that U.S. Trust may request or require
to properly discharge its duties. Such documents may include but are not
limited to the following:

                           (a) Resolutions of the Board authorizing the
appointment of U.S. Trust to provide transfer agent services to the Fund;

                           (b) The Fund's Declaration, as amended;

                           (c) The Fund's By-Laws, as amended;

                           (d) The Fund's Notification of Registration on
Form N-8A under the 1940 Act as filed with the Securities and Exchange
Commission ("SEC");

                           (e) The Fund's registration statement, including
exhibits, on Form N-1A under the 1933 Act and the 1940 Act, and all amendments
thereto, as filed with the SEC (the "Registration Statement");

                                       4

<PAGE>

                           (f) A copy of the Investment Advisory Agreement
between the Fund and Miller Anderson & Sherrerd dated July 1, 1988 (the
"Advisory Agreement");

                           (g) A copy of the Custodian Agreement dated
November 18, 1986 between the Fund and Morgan Guaranty Trust Company of New
York (Morgan Guaranty) (the "Domestic Custodian Agreement"); and a copy of the
Custodian Agreement dated September 1, 1993 between the Fund and Morgan
Stanley Trust Company (Morgan Stanley) (the "International Custodian
Agreement") (together, Morgan Guaranty and Morgan Stanley are referred to
herein as the "Custodian");

                           (h) opinions of counsel and auditors reports;

                           (i) The Fund's current Prospectuses and Statement
of Additional Information relating to all Portfolios and all amendments and
supplements thereto (such Prospectuses and Statement of Additional Information
and supplements thereto, as presently in effect and as from time to time
hereafter amended and supplemented, are herein called the "Prospectuses"); and

                           (j) Such other agreements as the Fund may enter
into from time to time, including securities lending agreements, futures and
commodities account agreements, brokerage agreements, and options agreements.

                  4. Services Provided by U.S. Trust.

         U.S.  Trust will provide the  following  transfer  agent and dividend
disbursing services, subject to the control, direction and supervision of the
Board and in compliance with the objectives, policies and limitations set
forth in the Fund's Registration Statement, Declaration and By-Laws,
applicable laws and regulations, and all resolutions and policies adopted by
the Board:

                                       5

<PAGE>



                           (a) Maintaining records for each Fund shareholder
showing the following: (i) Name, address and tax identification number; (ii)
Number of shares held of each Portfolio of the Fund; (iii) Historical
information, including dividends paid and date and price of all share
purchases, redemptions and other transactions; (iv) All dividend reinvestment
orders (if any), applications, dividend addresses and correspondence relating
to current maintenance of the account; and (v) Pertinent data as reasonably
may be requested, added and or designated by the Fund's officers.

                           (b) Recording the issuance of shares of each
Portfolio. Except as specifically agreed in writing between U.S. Trust and the
Fund, U.S. Trust shall have no obligation to take cognizance of any other laws
relating to the issue and sale of such shares.

                           (c) Transferring on the records of the Fund shares,
whether represented by certificates or held in non-certificate form, upon the
surrender to it of the certificate or, in the case of non-certificated shares,
comparable transfer documents in proper form for transfer, and upon
cancellation thereof countersigning and issuing new certificates or other
documents of ownership for a like amount of shares and delivering the same
pursuant to the transfer instructions.

                           (d) In the event that any check or other order for
the payment of money is returned unpaid for any reason, taking such steps,
including redepositing said check for collection or returning said check to
the investor, as U.S. Trust may, at its discretion, deem appropriate, and
notifying the Fund of such action.

                                       6

<PAGE>

                           (e) Preparing, filing with the Internal Revenue
Service and mailing to shareholders such returns for reporting payment of
dividends and distributions as are required by applicable laws to be so filed
and/or mailed, provided that U.S. Trust shall withhold such sums as are
required to be withheld under applicable Federal income tax laws rules and
regulations.

                           (f) Mailing proxy statements, proxy cards and other
materials and receiving, examining and tabulating returned proxies. U.S. Trust
shall certify that all proxies have been mailed, make interim reports of the
status of such tabulation to the Fund upon request, and shall certify the
final results of the tabulation.

                           (g) Prepare and mail checks, place wire transfers
or credit income and capital gain payments to shareholders. The Fund shall
advise U.S. Trust of the declaration of any dividend or distribution and the
record and payable date thereof at least five (5) days prior to the record
date. U.S. Trust shall, on or before the payment date of any such dividend or
distribution, notify the Fund's Custodian of the estimated amount required to
pay any portion of said dividend or distribution payable in cash, and on or
before the payment date of such distribution, the Fund shall instruct-its
Custodian to make available to U.S. Trust sufficient funds for the cash amount
to be paid out. If a shareholder is entitled to receive additional shares by
virtue of any such distribution or dividend, appropriate credits will be made
to his/her account and/or certificates delivered where requested. A
shareholder not electing issuance of certificates will receive a confirmation
from U.S. Trust indicating the number of shares credited to his/her account.

                           (h) Except as otherwise provided in this paragraph
(h), U.S. Trust shall not be responsible for processing subscription or
redemption transactions. U.S. Trust shall

                                       7

<PAGE>

process subscription and redemption transactions as set forth below in
sub-paragraphs (1) and (2) with respect to individual or profit sharing
accounts of investors who are employees of Miller Anderson & Sherrerd
("Employee Investors"); provided, however, that U.S. Trust shall process such
transactions only when requests to purchase or redeem shares are received by
U.S. Trust directly from such Employee Investors. U.S. Trust shall:

                           (1) Subject to acceptance by the Fund and its
distributor, process all orders for the purchase of shares of the Fund in
accordance with the Fund's current registration statement. Upon receipt of any
check or other payment for purchase of shares of the Fund from an Employee
Investor, U.S. Trust will (i) stamp the envelope with the date of receipt,
(ii) forthwith process the same for collection, (iii) determine the amounts
thereof due the Fund, and notify the Fund of such determination and deposit,
such notification to be given on a daily basis of the total amounts determined
and deposited to the Fund's custodian bank account during such day. U.S. Trust
shall then credit the share account of the Employee Investor with the number
of shares to be purchased made on the date such payment is received by U.S.
Trust, as set forth in the Fund's current prospectus and shall promptly mail a
confirmation of such purchase to the Employee Investor, all subject to any
instructions which the Fund may give to U.S. Trust with respect to the timing
or manner of acceptance of orders for shares relating to payments so received
by it.

                           (2) Receive and stamp with the date of receipt all
valid requests for redemptions of shares held in certificate or
non-certificate form, and process redemption requests as follows: W if such
certificate or redemption request complies with the applicable standards
approved by the Fund, U.S. Trust shall on each business day on which any

                                       8

<PAGE>

such redemption request is received notify the Fund of the total number of
shares presented and covered by such requests received by U.S. Trust on such
day; (ii) on or prior to the seventh calendar day succeeding any such requests
received by U.S. Trust, U.S. Trust shall notify the Fund's custodian bank,
subject to instructions from the Fund, to transfer monies to such account as
designated by U.S. Trust for such payment to the redeeming Employee Investor
of the applicable redemption price; (iii) if any such certificate or request
for redemption does not comply with applicable standards, U.S. Trust shall
promptly notify the Employee Investor or such fact, together with the reason
therefore, and shall effect such redemption at the Fund's price next
determined after receipt of documents complying with such standards or, at
such other time as the Fund shall so direct.

                  5. Fees; Expenses; Expense Reimbursement

                           (a) As compensation for the services rendered to
the Fund pursuant to this Agreement, the Fund shall pay U.S. Trust such fees
as are set forth in Schedule A to this Agreement. Such fees are to be computed
daily and paid monthly on the second business day of the month following
provision of the services. Upon any termination of this Agreement before the
end of any month, the fee for the part of the month before such termination
shall be prorated according to the proportion which such part bears to the
full monthly period and shall be payable upon the date of termination of this
Agreement.

                           (b) For the purposes of determining any fees
calculated as a function of the Fund's assets, the value of the Fund's net
assets shall be computed as required by its Prospectuses, generally accepted
accounting principles and resolutions of the Board.

                                       9

<PAGE>

                           (c) U.S. Trust will from time to time employ or
associate with such person or persons as may be appropriate to assist U.S.
Trust in the performance of this Agreement. Such persons or persons may be
officers and employees who are employed or designated as officers by both U.S.
Trust and the Fund. The compensation of such person or persons for such
employment shall be paid by U.S. Trust and no obligation will be incurred by
or on behalf of the Fund in such respect.

                           (d) U.S. Trust will bear all of its own expenses in
connection with its performance of services under this Agreement except as
otherwise provided herein. The Fund agrees to promptly reimburse U.S. Trust
for any equipment and supplies specially ordered by or for the Fund through
U.S. Trust and for any other expenses not contemplated by this Agreement that
U.S. Trust may incur on the Fund's behalf at the Fund's request or as
consented to by the Fund. Such other expenses to be incurred in the operation
of the Fund and to be borne by the Fund include, but are not limited to:
taxes; SEC and state blue sky registration and qualification fees, levies,
fines and other charges; charges and expenses of custodians; and expenses of
typesetting, printing and production costs of shareholders, reports and proxy
statements and materials; and costs and expenses of Fund stationery and forms.

                  6. Proprietary and Confidential Information. U.S. Trust
agrees on behalf of itself and its employees to treat confidentially and as
proprietary information of the Fund, all records and other information
relative to the Fund's prior, present or potential shareholders, and to not
use such records and information for any purpose other than performance of
U.S. Trust's responsibilities and duties hereunder. U.S. Trust may seek a
waiver of such confidentiality provisions by furnishing reasonable prior
notice to the Fund and obtaining approval in writing

                                      10

<PAGE>

from the Fund, which approval shall not be unreasonably withheld and may not
be withheld where U.S. Trust may be exposed to civil or criminal contempt
proceedings for failure to comply, when requested to divulge such information
by duly constituted authorities. Waivers of confidentiality are automatically
effective without further action by U.S. Trust with respect to Internal
Revenue Service levies, subpoenas and similar actions, or with respect to any
request by the Fund.

                  7. Duties, Responsibilities and Limitation of Liability

                  (a) In the performance of its duties hereunder, U.S. Trust
shall be obligated, as applicable, to exercise the due care and diligence of a
mutual fund transfer and dividend disbursing agent, and in all events to act
in good faith in performing the services provided for under this Agreement. In
performing its services hereunder, U.S. Trust shall be entitled to rely on any
oral or written instructions, notices or other communications from the Fund
and its Custodian, officers and directors, investors, agents and other service
providers which U.S. Trust reasonably believes to be genuine, valid and
authorized. U.S. Trust also shall be entitled to rely on the advice and
opinions of outside counsel acceptable to the Fund, as necessary or
appropriate.

                  (b) Subject to the foregoing, U.S. Trust shall not be liable
for any error of judgment or mistake of law or for any loss or expense
suffered by the Fund, in connection with the matters to which this Agreement
relates, except for a loss or expense resulting from willful misfeasance, bad
faith or gross negligence on U.S. Trust's part in the performance of its
duties or from reckless disregard by U.S. Trust of its obligations and duties
under this Agreement. Any officer, director, partner, employee or agent of the
Fund who is also an officer, director, partner,

                                      11

<PAGE>

employee or agent of U.S. Trust shall be deemed to be rendering services to or
acting solely for the Fund, except when rendering services or business in
connection with U.S. Trust's duties hereunder.

                  (c) Subject to Paragraph 7(b) above, U.S. Trust shall not be
responsible for, and the Fund shall indemnify and hold U.S. Trust harmless
from and against, any and all losses, damages, costs, reasonable attorneys'
fees and expenses, payments, expenses and liabilities arising out of or
attributable to:

                           (i) all actions of U.S. Trust or its officers or
agents required to be taken pursuant to this Agreement;

                           (ii) the reliance on or use by U.S. Trust or its
officers or agents of information, records, or documents which are received by
U.S. Trust or its officers or agents and furnished to it or them by or on
behalf of the Fund, and which have been prepared or maintained by the Fund or
any other third party on behalf of the Fund;

                           (iii) the Fund's refusal or failure to comply with
the terms of this Agreement or the Fund's lack of good faith, or its actions,
or lack thereof, involving gross negligence or willful misfeasance;

                           (iv) the breach of any representation or warranty
of the Fund hereunder;

                           (v) reasonable and justified reliance by U.S. Trust
on telephone or other electronic instructions of any person acting on behalf
of a shareholder or shareholder account for which telephone or other
electronic services have been authorized;

                                      12

<PAGE>

                           (vi) the reliance on or the carrying out by U.S.
Trust or its officers or agents of any proper instructions reasonably believed
to be duly authorized, or requests of the Fund or recognition by U.S. Trust of
any share certificates which are reasonably believed to bear the proper
signatures of the officers of the Fund and the proper countersignature of any
former or current transfer agent or registrar of the Fund; or

                           (vii) the offer or sale of shares by the Fund
and/or its distributor (a) in violation of any requirement under the federal
securities laws or regulations or the securities laws or regulations of any
state, or (b) in violation of any stop order or other determination or ruling
by any Federal agency or any state agency with respect to the offer or sale of
such shares in such state resulting from activities, actions, or omissions by
the Fund or its distributor or existing or arising out of activities, actions
or omissions by or on behalf of the Fund prior to the effective date of this
Agreement.

                           (d) U.S. Trust shall indemnify and hold the Fund
harmless from and against any and all losses, damages, costs, charges,
reasonable attorneys' fees and expenses, payments, expenses and liabilities
arising out of or attributable to U.S. Trust's refusal or failure to comply
with the terms of this Agreement; U.S. Trust's breach of any representation or
warranty made by it herein; or U.S. Trust's lack of good faith, or acts
involving gross negligence, willful misfeasance or reckless disregard of its
duties.

                  8 Term. This Agreement shall become effective on the date
first hereinabove written. This Agreement shall continue in effect unless
terminated by either party on 90 days, prior written notice. Upon termination
of this Agreement, the Fund shall pay to U.S.

                                      13

<PAGE>

Trust such compensation and any reimbursable expenses as may be due under the
terms hereof as of the date of termination or the date that the provision of
services ceases, whichever is later.

                  9. Notices. Any notice required or permitted hereunder shall
be in writing and shall be deemed to have been given when delivered in person
or by certified mail, return receipt requested, to the parties at the
following address (or such other address as a party may specify by notice to
the other)

          If to the Fund:
                   MAS Funds

                  P.O. Box 868
                  One Tower Bridge
                  West Conshohocken, PA 19428-0868
                  Attn: Mr. Douglas Kugler

                  FAX:  (215) 940-06S2
                  with a copy to:
                  Richard W. Grant, Esquire
                  Morgan, Lewis & Bockius
                  2000 One Logan Circle
                  Philadelphia, PA 19103
                  FAX:     (215) 963-5299

         If to U.S. Trust:

                                      14

<PAGE>

                  114 West 47th Street
                  New York, New York 10036
                  Attn: Division Director, Mutual Funds Division
                      FAX: (212)_____________

         with a copy to:

         Mutual Funds Service Company
         73 Tremont Street
         Boston, Massachusetts 02108
         Attn: Karl Hartmann,
                  Vice President and General Counsel
         FAX:   (617) 557-8616

Notice shall be effective upon receipt, if by mail, on the date of personal
delivery, by private messenger, courier service or otherwise or upon confirmed
receipt of telex or facsimile, whichever occurs first.

                  10. Assignability. This Agreement shall not be assigned by
any of the parties hereto without the prior consent in writing of the other
party; provided, however, that U.S. Trust may in its own discretion and
without limitation or prior consent of the Fund, whenever and on such terms
and conditions as U.S. Trust deems necessary or appropriate, subcontract,
delegate or assign its rights, duties, obligations and liabilities to its
subsidiaries or affiliates; provided further, that any such subcontract,
agreement or understanding shall not discharge U.S. Trust or its affiliates or
subsidiaries, as the case may be, from the obligations hereunder. Similarly,
U.S.

                                      15

<PAGE>

Trust or its affiliated subcontractor, designee, or assignee may, at its
discretion, without notice to the Fund, enter into such subcontracts,
agreements and understandings, whenever and on such terms and conditions as
U.S. Trust or they deem necessary or appropriate to perform services
hereunder, with non-affiliated third parties; provided, however, that such
subcontract, agreement or understanding shall not discharge U.S. Trust, or its
subcontractor, designee, or assignee, as the case may be, from U.S. Trust's
obligations hereunder.

                  11. Waiver. The failure of a party to insist upon strict
adherence to any term of this Agreement on any occasion shall not be
considered a waiver nor shall it deprive such party of the right thereafter to
insist upon strict adherence to that term or any term of this Agreement. Any
waiver must be in writing signed by the waiving party.

                  12. Force Maleure. U.S. Trust shall not be responsible or
liable for any failure or delay in performance of its obligations under this
Agreement arising out of or caused, directly or indirectly, by circumstances
beyond its reasonable control, including without limitation, acts of God,
earthquakes, fires, floods, wars, acts of civil or military authorities, or
governmental actions, nor shall any such failure or delay give the Fund the
right to terminate this Agreement.

                  13. Amendments. This Agreement may be modified or amended
from time to time by mutual written agreement between the parties. No
provision of this Agreement may be changed, discharged or terminated orally,
but only by an instrument in writing signed by the party against which
enforcement of the change, discharge or termination is sought.

                  14. Severability. If any provision of this Agreement is
invalid or unenforceable, the balance of the Agreement shall remain in effect,
and if any provision is

                                      16

<PAGE>

inapplicable to any person or circumstance it shall nevertheless remain
applicable to all other persons and circumstances.

                  15.  Governing Law. This Agreement  shall be governed by the
laws of the Commonwealth of Pennsylvania.

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be executed by their officers designated below as of the date
first written above.

                                    MAS FUNDS

                                    By: /s/ Lorraine Truten
                                    --------------------------
                                    Name: Lorraine Truten
                                    Title: Vice President

                                    UNITED STATES TRUST COMPANY OF NEW YORK

                                    By:/s/Donald P. Hearn
                                    --------------------------
                                    Name: Donald P. Hearn
                                    Title: EVP

                                                        17

<PAGE>

                                  SCHEDULE A
                               SCHEDULE OF FEES

                No separate fee is payable under this Agreement



















                                      18

<PAGE>

                                  SCHEDULE B
                LISTING OF PORTFOLIOS SUBJECT TO THIS AGREEMENT

1.       Equity Portfolio

2.       Value Portfolio

3.       Small Capitalization Value Portfolio

4.       Growth Portfolio

5.       Emerging Growth Portfolio

6.       Fixed Income Portfolio

7.       Fixed Income II Portfolio

8.       Special Purpose Fixed Income Portfolio

9.       High Yield Securities Portfolio

10.      Limited Duration Fixed Income Portfolio

11.      Intermediate Duration Fixed Income Portfolio

12.      Mortgage-Backed Securities Portfolio

13.      Balanced Portfolio

14.      International Equity Portfolio

15.      Emerging Markets Portfolio

16.      Global Fixed Income Portfolio

17.      International Fixed Income Portfolio

18.      Cash Reserves Portfolio

19.      Select Value Portfolio

20.      Select Equity Portfolio



                                      19

<PAGE>

21.      Select Fixed Income Portfolio

22.      Municipal Fixed Income Portfolio

23.      Pennsylvania Municipal Fixed Income Portfolio















                                      20

<PAGE>

                                   Exhibit A
                                 Amendment to

                           TRANSFER AGENCY AGREEMENT

    Paragraph 8 of the Transfer Agency Agreement ("Agreement") between MAS
Funds ("Funds") and Chase Global Funds Services Company ("Chase") dated
November 18, 1993 and amended by letter of agreement dated February 9, 1995,
is hereby amended by striking Paragraph 8 in its entirety from the Agreement
and replacing it as follows:

         "8. TERM.: This Agreement shall continue in effect for a minimum
period of 24 months from the date set forth below and shall continue in effect
thereafter unless terminated by either party on 90 prior written notice. Upon
termination of the Agreement, the Fund shall pay Chase all fees and
reimbursable expenses as may be due under the terms hereof as of the date of
the termination or the that the provision of services ceases, whichever is
later."

AGREED TO AND ACCEPTED:                            AGREED TO AND ACCEPTED:

Chase Global Funds Services Company                MAS Funds

    By:_______________________-                    By:_________________________
         Donald P. Hearn                           Lorraine Truten
         Chairman                                  Vice President, MAS Funds

Dated: November 18,1996

                                      21


<PAGE>

                   AMENDMENT TO "TRANSFER AGENCY AGREEMENT"
                    AND "FUND SUB-ADMINISTRATION AGREEMENT"

                               BETWEEN MAS FUNDS
                  AND UNITED STATES TRUST COMPANY OF NEW YORK

                    BOTH AGREEMENTS DATED NOVEMBER 18, 1993

         This Amendment is between United States Trust Company of New York and
MAS Funds with respect to the Transfer Agency Agreement ("Transfer Agency
Agreement") and the Fund Sub-Administration Agreement ("Administration
Agreement"), which are hereby amended as follows:

Pursuant to Section 13 ("Amendments") of the Transfer Agency Agreement,
Schedule B is hereby amended by the addition of the following Portfolios:

                                  SCHEDULE B

                Listing of Portfolios Subject to this Agreement

         24.      Multi-Asset Class
         25.      Intermediate Duration Fixed Income
         26.      Advisory Foreign Fixed Income
         27.      Mid Cap Value
         28.      Emerging Markets
         29.      Advisory Mortgage

Pursuant to Section 14 ("Amendments") of the Administration Agreement,
Schedule A is hereby amended by the addition of the following Portfolios:

                                  SCHEDULE A

                Listing of Portfolios Subject to this Agreement

         24.      Multi-Asset Class
         25.      Intermediate Duration Fixed Income
         26.      Advisory Foreign Fixed Income
         27.      Mid Cap Value
         28.      Emerging Markets
         29.      Advisory Mortgage

In all other respects, the Transfer Agency Agreement and the Administration
Agreement are confirmed and shall continue to be effective.


<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be executed by their officer thereunto duly authorized as of this ___ day of
August, 1995. This Amendment will be effective as of _________, 1995.

UNITED STATES TRUST                              MAS FUNDS
COMPANY OF NEW YORK

By:  /s/ Donald P. Hearn                         By: /s/ James D. Schmid
- -------------------------                        ------------------------------
Title:  Chairman                                 Title:  President



<PAGE>

                                       [The Vanguard Group Investment Companies]


                                                                 August 23, 1984

MAS Pooled Trust Fund
P.O. Box 2600
Valley Forge, Pennsylvania  19482

Gentlemen:

         MAS Pooled Trust Fund (the "Fund") is a business trust established
under the laws of the Commonwealth of Pennsylvania under a Declaration of Trust
dated February 15, 1984. I have acted as counsel to the Fund since its formation
and with respect to its registration as an open-end management investment
company under the Investment Company Act of 1940("1940 Act") and the
registration of its shares of beneficial interest under the Securities Act of
1933 ("1933 Act"). It is in this capacity that I am furnishing you this opinion.

         I have examined the Fund's Declaration of Trust, By-Laws, minutes of
the meetings of the Board of Trustees, Notification of Registration on Form N-8A
under the 1940 Act, Registration Statement on Form N-1 under the 1933 and 1940
Acts, as amended to date, and such of the other proceedings and documents which
I have deemed necessary or appropriate for furnishing this opinion.

         Based on the foregoing, it is my opinion:

         1. That MAS Pooled Trust Fund is a valid and subsisting business trust
of the Commonwealth of Pennsylvania legally authorized to issue an unlimited
number of shares of beneficial interest, without par value, form an unlimited
number of classes ("Portfolios"). On August 23, 1984 there were 4,000 shares of
beneficial interest issued and outstanding form the Fund's Value Portfolio.
These shares were sold in a private placement to Miller, Anderson & Sherrerd,
the Fund's investment adviser, in order that the Fund may meet the net worth
requirements of Section 14(a) of the 1940 Act.

         2. That the indefinite number of shares of beneficial interest of four
Portfolios of the Fund (Equity Portfolio, Value Portfolio, Fixed Income
Portfolio and Cash Portfolio) currently being registered with the United States
Securities and Exchange Commission under the 1933 Act pursuant to Rule 24f-2 of
the 1940 Act, by a Registration Statement filed on Form N-1 (File No. 2-89729)
and amendments thereto may be legally and validly issued from time to time in
accordance withe Declaration of Trust and By-Laws of the Fund upon receipt of
the Fund of payment in cash, and subject to compliance with the 1933 Act as
amended, the 1940 Act, as amended, and applicable state laws relating to the
sale of securities.

         3. Upon effectiveness of the Registration Statement on Form N-1
covering an indefinite number of shares and beneficial interest of four
Portfolios of the Fund, the Fund will,


<PAGE>


in jurisdiction where such share are qualified for sale, be authorized to make a
public offering of such shares at prices calculated in the manner disclosed in
the Fund's then current Prospectus. Such shares, when issued, will be lawfully
issued, fully paid and nonassessable; and the holders of such shares will have
all rights provided for with respect to such holdings by the Fund's Declaration
of Trust, By-Laws and the Laws of the Commonwealth of Pennsylvania.

         I hereby consent to the use of this opinion as an exhibit to Amendment
No. 3 of the Fund's Registration Statement on Form N-1, and to the Application
and Registration Statements and Amendments thereto filed in accordance with the
securities laws of the states in which shares of the Fund are to be offered; and
I further consent tot he reference in the Prospectus of the Fund to the fact
that this opinion concerning the legality of the issue has been rendered by me.


                                                      Very truly yours,

                                                   /s/Raymond J. Klapinsky
                                                      --------------------
                                                      Raymond J. Klapinsky




<PAGE>
          
             CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in the Prospectuses and
Statement of Additional Information constituting parts of this Post-Effective
Amendment No. 46 to the registration statement on Form N-1A (the "Registration
Statement") of our report dated November 20, 1997, relating to the financial
statements and financial highlights appearing in the September 30, 1997 Annual
Report of the twenty-two portfolios of MAS Funds, which is also incorporated by
reference into the Registration Statement.

We also hereby consent to the incorporation by reference in the Prospectus and
Statement of Additional Information constituting parts of this Registration
Statement of our report dated November 20, 1997, relating to the financial
statements and financial highlights appearing in the September 30, 1997 Annual
Report of the Advisory Foreign Fixed Income Portfolio and the Advisory Mortgage
Portfolio of MAS Funds, which is also incorporated by reference into the
Registration Statement.

We also consent to the references to us under the headings "Financial
Highlights" and "General Shareholder Information - Other Information - Reports"
in each Prospectus and under the heading "Financial Statements" in the Statement
of Additional Information.

   
/s/ Price Waterhouse LLP
- ------------------------
Price Waterhouse LLP

Boston, Massachusetts
January 27, 1998
    


<PAGE>

                                   MAS FUNDS

                                  EXHIBIT 16

              SCHEDULE FOR COMPUTATION OF PERFORMANCE QUOTATIONS

            AVERAGE ANNUAL TOTAL RETURNS (as of September 30, 1991)

       n
P(1 + T) = ERV

Where:            P = a hypothetical initial payment of $1,000
                  T = average annual total return
                  n = number of years
                ERV = Ending redeemable value for the period

1.  Equity Portfolio

                                        Since Inception
   One Year                               (11/14/84)              Five Years
   --------                             ---------------           ----------
   P = $1,000                           P = $1,000                P = $1,000
   T =  40.182                          T =  .17661               T =  14.564
   n =  1                               n =  6.877                n =  5
 ERV =  1,401.82                      ERV =  3,060.13           ERV =  1,973.56

2.  Select Equity Portfolio

                                       Since Inception
   One Year                               (11/14/84)              Five Years
   --------                             ---------------           ----------
   P = $1,000                           P = $1,000                P = $1,000
   T =  39.478                          T =  .17754               T = NA
   n =  1                               n =  3.592                n = NA
 ERV =  1,394.78                      ERV =  1,798.64           ERV = NA

3.  Fixed Income Portfolio

                                        Since Inception
   One Year                               (11/14/84)               Five Years
   --------                             ---------------            ----------
   P = $1,000                           P = $1,000                 P = $1,000
   T =  21.17                           T =  .12382                T =  9.8194
   n =  1                               n =  6.877                 n =  5
 ERV =  1,211.17                      ERV =  2,231.73            ERV =  1,597.30




<PAGE>

4.  Select Fixed Income Portfolio

                                      Since Inception
   One Year                              (11/14/84)               Five Years
   --------                            ---------------            ----------
   P = $1,000                          P = $1,000                 P = $1,000
   T =  20.989                         T =  .11484                T =  NA
   n =  1                              n =  4.003                 n =  NA
 ERV =  1,209.89                     ERV =  1,545.23            ERV =  NA

5.  Fixed Income Portfolio II

                                      Since Inception
   One Year                              (11/14/84)               Five Years
   --------                            ---------------            ----------
   P = $1,000                          P = $1,000                 P = $1,000
   T =  19.592                         T =  .18941                T =  NA
   n =  1,195.92                       n =  1.087                 n =  NA
 ERV =  1,195.92                     ERV =  1,206.45            ERV =  NA

6.  International Equity Portfolio

                                      Since Inception
   One Year                              (11/14/84)               Five Years
   --------                            ---------------            ----------
   P = $1,000                          P = $1,000                 P = $1,000
   T =  21.216                         T =  .08127                T =  NA
   n =  1                              n =  2.847                 n =  NA
 ERV =  1,212.16                     ERV =  1,249.15            ERV =  NA

7.  Cash Reserves Portfolio

                                      Since Inception
   One Year                              (11/14/84)               Five Years
   --------                            ---------------            ----------
   P = $1,000                          P = $1,000                 P = $1,000
   T =  6.629                          T =  .06801                T =  NA
   n =  1                              n =  1.088                 n =  NA
 ERV =  1,066.29                     ERV =  1,074.21            ERV =  NA

8.  Value Portfolio

                                      Since Inception
   One Year                              (11/14/84)               Five Years
   --------                            ---------------            ----------
   P = $1,000                          P = $1,000                 P = $1,000
   T =  45.544                         T =  .16114                T =  .11759
   n =  1                              n =  6.901                 n =  5
 ERV =  1,455.44                     ERV =  2,803.95            ERV =  1,743.45



<PAGE>

9.  Select Value Portfolio

                                        Since Inception
   One Year                               (11/14/84)              Five Years
   --------                             ---------------           ----------
   P = $1,000                           P = $1,000                P = $1,000
   T =  .44245                          T =  .1508                T =  NA
   n =  1                               n =  3.849                n =  NA
 ERV =  1,442.45                      ERV =  1,717.06           ERV =  NA

10. Small Capitalization Value

                                        Since Inception
   One Year                               (11/14/84)              Five Years
   --------                             ---------------           ----------
   P = $1,000                           P = $1,000                P = $1,000
   T =  .63068                          T =  .05844               T =  .07585
   n =  1                               n =  5.249                n =  5
 ERV =  1,630.68                      ERV =  1,347.34           ERV =  1,441.32

11. High Yield Securities Portfolio

                                        Since Inception
   One Year                               (11/14/84)              Five Years
   --------                             ---------------           ----------
   P = $1,000                           P = $1,000                P = $1,000
   T =  36.702                          T =  .05735               T =  NA
   n =  1                               n =  2.586                n =  NA
 ERV =  1,367.01                      ERV =  1,155.13           ERV =  NA

12. Emerging Growth Portfolio

                                        Since Inception
   One Year                               (11/14/84)              Five Years
   --------                             ---------------           ----------
   P = $1,000                           P = $1,000                P = $1,000
   T =  .66258                          T =  .30753               T =  NA
   n =  1                               n =  1.504                n =  NA
 ERV =  1,662.58                      ERV =  1,496.72           ERV =  NA




<PAGE>

                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Lorraine Truten, Douglas W. Kugler, and John H. Grady, Jr., and each of them
singly, his or her true and lawful attorneys-in-fact and agents with full
power of substitution and resubstitution, to sign for him or her and in his or
her name, place and stead, and in the capacity indicated below, to sign any or
all amendments (including post-effective amendments) to the Fund's
Registration Statement on Form N-1A under the provisions of the Investment
Company Act of 1940 and the Securities Act of 1933, each such Act as amended,
and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, acting alone, full
power and authority to do and perform each and every act and thing requisite
or necessary to be done in and about the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set his or her hand
and seal as of the date set forth below.

/s/ Thomas L. Bennett                                              Date: 9/21/95
- ---------------------
Thomas L. Bennett
Chairman of the Board of Trustees

<PAGE>

                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Lorraine Truten, Douglas W. Kugler, and John H. Grady, Jr., and each of them
singly, his or her true and lawful attorneys-in-fact and agents with full
power of substitution and resubstitution, to sign for him or her and in his or
her name, place and stead, and in the capacity indicated below, to sign any or
all amendments (including post-effective amendments) to the Fund's
Registration Statement on Form N-1A under the provisions of the Investment
Company Act of 1940 and the Securities Act of 1933, each such Act as amended,
and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, acting alone, full
power and authority to do and perform each and every act and thing requisite
or necessary to be done in and about the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set his or her hand
and seal as of the date set forth below.

/s/ Joseph P. Healey                                              Date: 11/28/95
- --------------------
Joseph P. Healey
Trustee

<PAGE>

                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Lorraine Truten, Douglas W. Kugler, and John H. Grady, Jr., and each of them
singly, his or her true and lawful attorneys-in-fact and agents with full
power of substitution and resubstitution, to sign for him or her and in his or
her name, place and stead, and in the capacity indicated below, to sign any or
all amendments (including post-effective amendments) to the Fund's
Registration Statement on Form N-1A under the provisions of the Investment
Company Act of 1940 and the Securities Act of 1933, each such Act as amended,
and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, acting alone, full
power and authority to do and perform each and every act and thing requisite
or necessary to be done in and about the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set his or her hand
and seal as of the date set forth below.

/s/ Joseph J. Kearns                                              Date: 10/17/95
- --------------------
Joseph J. Kearns
Trustee

<PAGE>


                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Lorraine Truten and Douglas W. Kugler, his true and lawful attorneys-in-fact
and agents with full power of substitution and resubstitution, to sign for him
and in his name, place and stead, and in the capacity indicated below, to sign
any or all amendments (including post-effective amendments) to the Fund's
Registration Statement on Form N-1A under the provisions of the Investment
Company Act of 1940 and the Securities Act of 1933, each such Act as amended,
and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, acting alone, full
power and authority to do and perform each and every act and thing requisite
or necessary to be done in and about the premises, as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming
all that said attorneys-in-fact and agents or any of them, or their substitute
or substitutes, may lawfully do or cause to be done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set his hand and
seal as of the date set forth below.

/s/ John H. Grady, Jr.                                             Date: 9/20/95
- ----------------------
John H. Grady, Jr.
Secretary

<PAGE>

                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Douglas W. Kugler and John H. Grady, Jr., her true and lawful
attorneys-in-fact and agents with full power of substitution and
resubstitution, to sign for her and in her name, place and stead, and in the
capacity indicated below, to sign any or all amendments (including
post-effective amendments) to the Fund's Registration Statement on Form N-1A
under the provisions of the Investment Company Act of 1940 and the Securities
Act of 1933, each such Act as amended, and to file the same, with all exhibits
thereto, and other documents in connection therewith, with the Securities and
Exchange Commission, granting unto said attorneys-in-fact and agents, and each
of them, acting alone, full power and authority to do and perform each and
every act and thing requisite or necessary to be done in and about the
premises, as fully to all intents and purposes as she might or could do in
person, hereby ratifying and confirming all that said attorneys-in-fact and
agents or any of them, or their substitute or substitutes, may lawfully do or
cause to be done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set her hand and
seal as of the date set forth below.

/s/ Lorraine Truten                                                Date: 9/22/95
- --------------------
Lorraine Truten
Vice President

<PAGE>

                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Lorraine Truten, Douglas W. Kugler, and John H. Grady, Jr., and each of them
singly, his or her true and lawful attorneys-in-fact and agents with full
power of substitution and resubstitution, to sign for him or her and in his or
her name, place and stead, and in the capacity indicated below, to sign any or
all amendments (including post-effective amendments) to the Fund's
Registration Statement on Form N-1A under the provisions of the Investment
Company Act of 1940 and the Securities Act of 1933, each such Act as amended,
and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, acting alone, full
power and authority to do and perform each and every act and thing requisite
or necessary to be done in and about the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set his or her hand
and seal as of the date set forth below.

/s/ C. Oscar Morong, Jr.                                           Date: 9/31/95
- ------------------------
C. Oscar Morong, Jr.
Trustee

<PAGE>

                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Lorraine Truten, Douglas W. Kugler, and John H. Grady, Jr., and each of them
singly, his or her true and lawful attorneys-in-fact and agents with full
power of substitution and resubstitution, to sign for him or her and in his or
her name, place and stead, and in the capacity indicated below, to sign any or
all amendments (including post-effective amendments) to the Fund's
Registration Statement on Form N-1A under the provisions of the Investment
Company Act of 1940 and the Securities Act of 1933, each such Act as amended,
and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, acting alone, full
power and authority to do and perform each and every act and thing requisite
or necessary to be done in and about the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set his or her hand
and seal as of the date set forth below.

/s/ James D. Schmid                                                Date: 9/21/95
- --------------------
James D. Schmid
President

<PAGE>

                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Lorraine Truten, Douglas W. Kugler, and John H. Grady, Jr., and each of them
singly, his or her true and lawful attorneys-in-fact and agents with full
power of substitution and resubstitution, to sign for him or her and in his or
her name, place and stead, and in the capacity indicated below, to sign any or
all amendments (including post-effective amendments) to the Fund's
Registration Statement on Form N-1A under the provisions of the Investment
Company Act of 1940 and the Securities Act of 1933, each such Act as amended,
and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, and each of them, acting alone, full
power and authority to do and perform each and every act and thing requisite
or necessary to be done in and about the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set his or her hand
and seal as of the date set forth below.

/s/ Vincent R. McLean                                              Date: 5/23/96
- ---------------------
Vincent R. Mclean
Trustee

<PAGE>

                                    MAS FUNDS

                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned trustee
and/or officer of MAS Funds (the "Fund"), a business trust organized under the
laws of The Commonwealth of Pennsylvania, hereby constitutes and appoints
Lorraine Truten, Douglas W. Kugler, Thomas L. Bennett and John H. Grady, Jr.,
and each of them singly, his or her true and lawful attorneys-in-fact and
agents with full power of substitution and resubstitution, to sign for him or
her and in his or her name, place and stead, and in the capacity indicated
below, to sign any or all amendments (including post-effective amendments) to
the Fund's Registration Statement on Form N-1A under the provisions of the
Investment Company Act of 1940 and the Securities Act of 1933, each such Act
as amended, and to file the same, with all exhibits thereto, and other
documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents, and each of them,
acting alone, full power and authority to do and perform each and every act
and thing requisite or necessary to be done in and about the premises, as
fully to all intents and purposes as he or she might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact and agents or
any of them, or their substitute or substitutes, may lawfully do or cause to
be done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto set his or her hand
and seal as of the date set forth below.

/s/ Thomas P. Gerrity                                             Date: 11/21/96
- ----------------------
Thomas P. Gerrity
Trustee


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 29
   <NAME> ADVISORY FOREIGN FIXED INCOME PORTFOLIO
<MULTIPLIER> 1,000
       

<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           91,347
<INVESTMENTS-AT-VALUE>                          91,877
<RECEIVABLES>                                    2,799
<ASSETS-OTHER>                                      10
<OTHER-ITEMS-ASSETS>                                 1
<TOTAL-ASSETS>                                  94,687
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          748
<TOTAL-LIABILITIES>                                748
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        76,761
<SHARES-COMMON-STOCK>                            9,102
<SHARES-COMMON-PRIOR>                           20,131
<ACCUMULATED-NII-CURRENT>                       17,555
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                          (812)
<ACCUM-APPREC-OR-DEPREC>                           435
<NET-ASSETS>                                    93,939
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                               11,076
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                    (265)
<NET-INVESTMENT-INCOME>                         10,811
<REALIZED-GAINS-CURRENT>                        18,256
<APPREC-INCREASE-CURRENT>                       (2,505)
<NET-CHANGE-FROM-OPS>                           26,562
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (46,240)
<DISTRIBUTIONS-OF-GAINS>                       (24,390)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         23,853
<NUMBER-OF-SHARES-REDEEMED>                    (40,846)
<SHARES-REINVESTED>                             5,964
<NET-CHANGE-IN-ASSETS>                        (142,153)
<ACCUMULATED-NII-PRIOR>                         37,078
<ACCUMULATED-GAINS-PRIOR>                       21,228
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              713
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    988
<AVERAGE-NET-ASSETS>                           190,191
<PER-SHARE-NAV-BEGIN>                            11.73
<PER-SHARE-NII>                                   0.58
<PER-SHARE-GAIN-APPREC>                           0.80
<PER-SHARE-DIVIDEND>                            (1.88)
<PER-SHARE-DISTRIBUTIONS>                       (0.91)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.32
<EXPENSE-RATIO>                                   0.14
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 30
   <NAME> ADVISORY MORTGAGE PORTFOLIO
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                        3,395,864
<INVESTMENTS-AT-VALUE>                       3,448,179
<RECEIVABLES>                                   29,582
<ASSETS-OTHER>                                      68
<OTHER-ITEMS-ASSETS>                                83
<TOTAL-ASSETS>                               3,477,912
<PAYABLE-FOR-SECURITIES>                       405,531
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          954
<TOTAL-LIABILITIES>                            406,485
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     2,980,365
<SHARES-COMMON-STOCK>                          289,903
<SHARES-COMMON-PRIOR>                          191,962
<ACCUMULATED-NII-CURRENT>                       20,429
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         17,533
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        53,100
<NET-ASSETS>                                 3,071,427
<DIVIDEND-INCOME>                                6,495
<INTEREST-INCOME>                              179,957
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,954)
<NET-INVESTMENT-INCOME>                        184,498
<REALIZED-GAINS-CURRENT>                        30,589
<APPREC-INCREASE-CURRENT>                       43,687
<NET-CHANGE-FROM-OPS>                          258,774
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (164,543)
<DISTRIBUTIONS-OF-GAINS>                      (16,800)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        120,019
<NUMBER-OF-SHARES-REDEEMED>                   (35,328)
<SHARES-REINVESTED>                             13,249
<NET-CHANGE-IN-ASSETS>                       1,096,835
<ACCUMULATED-NII-PRIOR>                         11,202
<ACCUMULATED-GAINS-PRIOR>                      (3,576)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            9,155
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 11,846
<AVERAGE-NET-ASSETS>                         2,442,279
<PER-SHARE-NAV-BEGIN>                            10.29
<PER-SHARE-NII>                                   0.75
<PER-SHARE-GAIN-APPREC>                           0.34
<PER-SHARE-DIVIDEND>                            (0.71)
<PER-SHARE-DISTRIBUTIONS>                       (0.08)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.59
<EXPENSE-RATIO>                                   0.09
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 27
   <NAME> EMERGING MARKETS PORTFOLIO
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           20,957
<INVESTMENTS-AT-VALUE>                          23,089
<RECEIVABLES>                                      109
<ASSETS-OTHER>                                       2
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  23,200
<PAYABLE-FOR-SECURITIES>                           252
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          140
<TOTAL-LIABILITIES>                                392
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        17,829
<SHARES-COMMON-STOCK>                            1,838
<SHARES-COMMON-PRIOR>                            2,863
<ACCUMULATED-NII-CURRENT>                           91
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          2,776
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         2,112
<NET-ASSETS>                                    22,808
<DIVIDEND-INCOME>                                  181
<INTEREST-INCOME>                                  564
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (355)
<NET-INVESTMENT-INCOME>                            390
<REALIZED-GAINS-CURRENT>                         2,998
<APPREC-INCREASE-CURRENT>                        2,027
<NET-CHANGE-FROM-OPS>                            5,415
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (572)
<DISTRIBUTIONS-OF-GAINS>                       (2,288)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            488
<NUMBER-OF-SHARES-REDEEMED>                    (1,762)
<SHARES-REINVESTED>                                249
<NET-CHANGE-IN-ASSETS>                        (10,176)
<ACCUMULATED-NII-PRIOR>                            277
<ACCUMULATED-GAINS-PRIOR>                        2,062
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              255
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    385
<AVERAGE-NET-ASSETS>                            29,949
<PER-SHARE-NAV-BEGIN>                            11.52
<PER-SHARE-NII>                                   0.16
<PER-SHARE-GAIN-APPREC>                           1.73
<PER-SHARE-DIVIDEND>                            (0.20)
<PER-SHARE-DISTRIBUTIONS>                       (0.80)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.41
<EXPENSE-RATIO>                                   1.18
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 23
   <NAME> GLOBAL FIXED INCOME PORTFOLIO
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           77,162
<INVESTMENTS-AT-VALUE>                          76,409
<RECEIVABLES>                                    1,867
<ASSETS-OTHER>                                       2
<OTHER-ITEMS-ASSETS>                               239
<TOTAL-ASSETS>                                  78,517
<PAYABLE-FOR-SECURITIES>                           528
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          496
<TOTAL-LIABILITIES>                              1,024
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        76,229
<SHARES-COMMON-STOCK>                            7,281
<SHARES-COMMON-PRIOR>                            6,113
<ACCUMULATED-NII-CURRENT>                        1,414
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            921
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       (1,071)
<NET-ASSETS>                                    77,493
<DIVIDEND-INCOME>                                  213
<INTEREST-INCOME>                                4,583
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (441) 
<NET-INVESTMENT-INCOME>                          4,355
<REALIZED-GAINS-CURRENT>                         (183)
<APPREC-INCREASE-CURRENT>                      (1,626)
<NET-CHANGE-FROM-OPS>                            2,546 
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (4,111)
<DISTRIBUTIONS-OF-GAINS>                       (1,137)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,308
<NUMBER-OF-SHARES-REDEEMED>                      (579)
<SHARES-REINVESTED>                                439
<NET-CHANGE-IN-ASSETS>                          10,211
<ACCUMULATED-NII-PRIOR>                          2,358
<ACCUMULATED-GAINS-PRIOR>                        1,053
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              289
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    443
<AVERAGE-NET-ASSETS>                            77,113
<PER-SHARE-NAV-BEGIN>                            11.01
<PER-SHARE-NII>                                   0.60
<PER-SHARE-GAIN-APPREC>                         (0.22)
<PER-SHARE-DIVIDEND>                            (0.59)
<PER-SHARE-DISTRIBUTIONS>                       (0.16)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.64
<EXPENSE-RATIO>                                   0.57
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 20
   <NAME> PA MUNICIPAL PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           26,187
<INVESTMENTS-AT-VALUE>                          28,173
<RECEIVABLES>                                      286
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                               130
<TOTAL-ASSETS>                                  28,589
<PAYABLE-FOR-SECURITIES>                         1,027
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          101
<TOTAL-LIABILITIES>                              1,128
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        25,489
<SHARES-COMMON-STOCK>                            2,344
<SHARES-COMMON-PRIOR>                            2,505
<ACCUMULATED-NII-CURRENT>                           20
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (229)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         2,181
<NET-ASSETS>                                    27,461
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                1,468
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (140)
<NET-INVESTMENT-INCOME>                          1,328
<REALIZED-GAINS-CURRENT>                             8
<APPREC-INCREASE-CURRENT>                          797
<NET-CHANGE-FROM-OPS>                            2,133
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (1,330)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            698
<NUMBER-OF-SHARES-REDEEMED>                      (935)
<SHARES-REINVESTED>                                 77
<NET-CHANGE-IN-ASSETS>                          (1,027)
<ACCUMULATED-NII-PRIOR>                             22
<ACCUMULATED-GAINS-PRIOR>                        (237)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              131
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    168
<AVERAGE-NET-ASSETS>                            28,050
<PER-SHARE-NAV-BEGIN>                            11.37
<PER-SHARE-NII>                                   0.55
<PER-SHARE-GAIN-APPREC>                           0.34
<PER-SHARE-DIVIDEND>                            (0.55)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.71
<EXPENSE-RATIO>                                   0.51
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 04
   <NAME> SMALL CAP VALUE PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          684,576
<INVESTMENTS-AT-VALUE>                         901,547
<RECEIVABLES>                                    2,454
<ASSETS-OTHER>                                      26
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 904,027
<PAYABLE-FOR-SECURITIES>                         4,432
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        2,199
<TOTAL-LIABILITIES>                              6,631
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       582,644
<SHARES-COMMON-STOCK>                           35,932
<SHARES-COMMON-PRIOR>                           29,815
<ACCUMULATED-NII-CURRENT>                        2,064
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         95,717
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       216,971
<NET-ASSETS>                                   897,396
<DIVIDEND-INCOME>                                9,347
<INTEREST-INCOME>                                1,384
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (5,900)
<NET-INVESTMENT-INCOME>                          4,831
<REALIZED-GAINS-CURRENT>                       113,081
<APPREC-INCREASE-CURRENT>                      175,057
<NET-CHANGE-FROM-OPS>                          292,969
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (3,283)
<DISTRIBUTIONS-OF-GAINS>                      (92,539)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          6,240
<NUMBER-OF-SHARES-REDEEMED>                    (5,376)
<SHARES-REINVESTED>                              5,253
<NET-CHANGE-IN-ASSETS>                         311,939
<ACCUMULATED-NII-PRIOR>                          1,636
<ACCUMULATED-GAINS-PRIOR>                       74,527
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            5,161
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  5,919
<AVERAGE-NET-ASSETS>                           688,532
<PER-SHARE-NAV-BEGIN>                            19.64
<PER-SHARE-NII>                                   0.15
<PER-SHARE-GAIN-APPREC>                           8.39
<PER-SHARE-DIVIDEND>                            (0.11)
<PER-SHARE-DISTRIBUTIONS>                       (3.10)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              24.97
<EXPENSE-RATIO>                                   0.86
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 06
   <NAME> DOMESTIC FIXED INCOME PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          100,617
<INVESTMENTS-AT-VALUE>                         102,078
<RECEIVABLES>                                    1,887
<ASSETS-OTHER>                                       3
<OTHER-ITEMS-ASSETS>                                 3
<TOTAL-ASSETS>                                 103,971
<PAYABLE-FOR-SECURITIES>                         3,856
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        3,161
<TOTAL-LIABILITIES>                              7,017
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        92,986
<SHARES-COMMON-STOCK>                            8,600
<SHARES-COMMON-PRIOR>                            8,759
<ACCUMULATED-NII-CURRENT>                        1,805
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            702
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         1,461
<NET-ASSETS>                                    96,954
<DIVIDEND-INCOME>                                  275
<INTEREST-INCOME>                                6,854
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (510)
<NET-INVESTMENT-INCOME>                          6,619
<REALIZED-GAINS-CURRENT>                         1,892
<APPREC-INCREASE-CURRENT>                        1,312
<NET-CHANGE-FROM-OPS>                            9,823
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (6,034)
<DISTRIBUTIONS-OF-GAINS>                         (179)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          2,909
<NUMBER-OF-SHARES-REDEEMED>                    (3,553)
<SHARES-REINVESTED>                                484
<NET-CHANGE-IN-ASSETS>                           1,592
<ACCUMULATED-NII-PRIOR>                          1,348
<ACCUMULATED-GAINS-PRIOR>                      (1,139)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              394
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    527
<AVERAGE-NET-ASSETS>                           102,078
<PER-SHARE-NAV-BEGIN>                            10.89
<PER-SHARE-NII>                                   0.74
<PER-SHARE-GAIN-APPREC>                           0.33
<PER-SHARE-DIVIDEND>                            (0.67)
<PER-SHARE-DISTRIBUTIONS>                       (0.02)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.27
<EXPENSE-RATIO>                                   0.51
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 25
   <NAME> INTERNATIONAL FIXED INCOME PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          151,995
<INVESTMENTS-AT-VALUE>                         149,461
<RECEIVABLES>                                    5,727
<ASSETS-OTHER>                                       5
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 155,193
<PAYABLE-FOR-SECURITIES>                         1,718
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          723
<TOTAL-LIABILITIES>                              2,441
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       154,579
<SHARES-COMMON-STOCK>                           14,991
<SHARES-COMMON-PRIOR>                           13,286
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                           (372)
<ACCUMULATED-NET-GAINS>                          1,312
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       (2,767)
<NET-ASSETS>                                   152,752
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                8,480
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (772)
<NET-INVESTMENT-INCOME>                          7,708
<REALIZED-GAINS-CURRENT>                       (5,420)
<APPREC-INCREASE-CURRENT>                      (2,334)
<NET-CHANGE-FROM-OPS>                             (46)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (5,327)
<DISTRIBUTIONS-OF-GAINS>                       (3,700)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          4,363
<NUMBER-OF-SHARES-REDEEMED>                    (3,475)
<SHARES-REINVESTED>                                817
<NET-CHANGE-IN-ASSETS>                           9,615
<ACCUMULATED-NII-PRIOR>                          3,997
<ACCUMULATED-GAINS-PRIOR>                        3,683
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              549
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    775
<AVERAGE-NET-ASSETS>                           146,374
<PER-SHARE-NAV-BEGIN>                            10.77
<PER-SHARE-NII>                                   0.50
<PER-SHARE-GAIN-APPREC>                         (0.44)
<PER-SHARE-DIVIDEND>                            (0.38)
<PER-SHARE-DISTRIBUTIONS>                       (0.26)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.19
<EXPENSE-RATIO>                                   0.53
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 031
   <NAME> VALUE PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                        3,259,878
<INVESTMENTS-AT-VALUE>                       4,071,812
<RECEIVABLES>                                   14,101
<ASSETS-OTHER>                                      73
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               4,085,986
<PAYABLE-FOR-SECURITIES>                         8,452
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      303,662
<TOTAL-LIABILITIES>                            312,114
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     2,632,809
<SHARES-COMMON-STOCK>                          173,895
<SHARES-COMMON-PRIOR>                          118,198
<ACCUMULATED-NII-CURRENT>                       18,442
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        306,739
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       815,882
<NET-ASSETS>                                 3,773,872
<DIVIDEND-INCOME>                               49,237
<INTEREST-INCOME>                               21,710
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                (17,233)
<NET-INVESTMENT-INCOME>                         53,714
<REALIZED-GAINS-CURRENT>                       375,983
<APPREC-INCREASE-CURRENT>                      516,078
<NET-CHANGE-FROM-OPS>                          945,775
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (43,078)
<DISTRIBUTIONS-OF-GAINS>                     (135,541)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         90,227
<NUMBER-OF-SHARES-REDEEMED>                   (44,093)
<SHARES-REINVESTED>                              9,563
<NET-CHANGE-IN-ASSETS>                       1,904,395
<ACCUMULATED-NII-PRIOR>                          9,064
<ACCUMULATED-GAINS-PRIOR>                      125,682
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                           14,010
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 17,543
<AVERAGE-NET-ASSETS>                         2,802,646
<PER-SHARE-NAV-BEGIN>                            15.61
<PER-SHARE-NII>                                   0.34
<PER-SHARE-GAIN-APPREC>                           5.75
<PER-SHARE-DIVIDEND>                            (0.30)
<PER-SHARE-DISTRIBUTIONS>                       (1.03)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              20.37
<EXPENSE-RATIO>                                   0.62
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 032
   <NAME> VALUE PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                        3,259,878
<INVESTMENTS-AT-VALUE>                       4,071,812
<RECEIVABLES>                                   14,101
<ASSETS-OTHER>                                      73
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               4,085,986
<PAYABLE-FOR-SECURITIES>                         8,452
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      303,662
<TOTAL-LIABILITIES>                            312,114
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     2,632,809
<SHARES-COMMON-STOCK>                            1,466
<SHARES-COMMON-PRIOR>                              593
<ACCUMULATED-NII-CURRENT>                       18,442
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        306,739
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       815,882
<NET-ASSETS>                                 3,773,872
<DIVIDEND-INCOME>                               49,237
<INTEREST-INCOME>                               21,710
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                (17,233)
<NET-INVESTMENT-INCOME>                         53,714
<REALIZED-GAINS-CURRENT>                       375,983
<APPREC-INCREASE-CURRENT>                      516,078
<NET-CHANGE-FROM-OPS>                          945,775
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (249)
<DISTRIBUTIONS-OF-GAINS>                         (851)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,187
<NUMBER-OF-SHARES-REDEEMED>                      (380)
<SHARES-REINVESTED>                                 66
<NET-CHANGE-IN-ASSETS>                       1,904,395
<ACCUMULATED-NII-PRIOR>                          9,064
<ACCUMULATED-GAINS-PRIOR>                      125,682
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                           14,010
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 17,543
<AVERAGE-NET-ASSETS>                         2,802,646
<PER-SHARE-NAV-BEGIN>                            15.60
<PER-SHARE-NII>                                   0.31
<PER-SHARE-GAIN-APPREC>                           5.75
<PER-SHARE-DIVIDEND>                            (0.27)
<PER-SHARE-DISTRIBUTIONS>                       (1.03)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              20.36
<EXPENSE-RATIO>                                   0.80
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 033
   <NAME> VALUE PORTFOLIO, ADVISER CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                        3,259,878
<INVESTMENTS-AT-VALUE>                       4,071,812
<RECEIVABLES>                                   14,101
<ASSETS-OTHER>                                      73
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               4,085,986
<PAYABLE-FOR-SECURITIES>                         8,452
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      303,662
<TOTAL-LIABILITIES>                            312,114
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     2,632,809
<SHARES-COMMON-STOCK>                            9,891
<SHARES-COMMON-PRIOR>                              993
<ACCUMULATED-NII-CURRENT>                       18,442
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        306,739
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       815,882
<NET-ASSETS>                                 3,773,872
<DIVIDEND-INCOME>                               49,237
<INTEREST-INCOME>                               21,710
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                (17,233)
<NET-INVESTMENT-INCOME>                         53,714
<REALIZED-GAINS-CURRENT>                       375,983
<APPREC-INCREASE-CURRENT>                      516,078
<NET-CHANGE-FROM-OPS>                          945,775
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (894)
<DISTRIBUTIONS-OF-GAINS>                       (1,156)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          9,462
<NUMBER-OF-SHARES-REDEEMED>                      (676)
<SHARES-REINVESTED>                                112
<NET-CHANGE-IN-ASSETS>                       1,904,395
<ACCUMULATED-NII-PRIOR>                          9,064
<ACCUMULATED-GAINS-PRIOR>                      125,682
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                           14,010
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 17,543
<AVERAGE-NET-ASSETS>                         2,802,646
<PER-SHARE-NAV-BEGIN>                            15.61
<PER-SHARE-NII>                                   0.30
<PER-SHARE-GAIN-APPREC>                           5.74
<PER-SHARE-DIVIDEND>                            (0.27)
<PER-SHARE-DISTRIBUTIONS>                       (1.03)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              20.35
<EXPENSE-RATIO>                                   0.90
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 011
   <NAME> EQUITY PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                        1,114,517
<INVESTMENTS-AT-VALUE>                       1,416,413
<RECEIVABLES>                                   15,017
<ASSETS-OTHER>                                      46
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               1,431,476
<PAYABLE-FOR-SECURITIES>                         5,450
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      111,125
<TOTAL-LIABILITIES>                            116,575
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       670,052
<SHARES-COMMON-STOCK>                           44,576
<SHARES-COMMON-PRIOR>                           56,179
<ACCUMULATED-NII-CURRENT>                        4,070
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        338,883
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       301,896
<NET-ASSETS>                                 1,314,901
<DIVIDEND-INCOME>                               22,626
<INTEREST-INCOME>                                3,614
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (8,240)
<NET-INVESTMENT-INCOME>                         18,000
<REALIZED-GAINS-CURRENT>                       379,936
<APPREC-INCREASE-CURRENT>                       58,032
<NET-CHANGE-FROM-OPS>                          455,968
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (21,326)
<DISTRIBUTIONS-OF-GAINS>                     (234,965)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          4,762
<NUMBER-OF-SHARES-REDEEMED>                   (27,052)
<SHARES-REINVESTED>                             10,687
<NET-CHANGE-IN-ASSETS>                       (127,473)
<ACCUMULATED-NII-PRIOR>                          7,536
<ACCUMULATED-GAINS-PRIOR>                      200,957
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            6,928
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  8,369
<AVERAGE-NET-ASSETS>                         1,385,643
<PER-SHARE-NAV-BEGIN>                            25.67
<PER-SHARE-NII>                                   0.36
<PER-SHARE-GAIN-APPREC>                           8.22
<PER-SHARE-DIVIDEND>                            (0.40)
<PER-SHARE-DISTRIBUTIONS>                       (4.40)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              29.45
<EXPENSE-RATIO>                                   0.60
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
<NUMBER> 012
   <NAME> EQUITY PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                        1,114,517
<INVESTMENTS-AT-VALUE>                       1,416,413
<RECEIVABLES>                                   15,017
<ASSETS-OTHER>                                      46
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               1,431,476
<PAYABLE-FOR-SECURITIES>                         5,450
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      111,125
<TOTAL-LIABILITIES>                            116,575
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       670,052
<SHARES-COMMON-STOCK>                               80
<SHARES-COMMON-PRIOR>                                4
<ACCUMULATED-NII-CURRENT>                        4,070
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        338,883
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       301,896
<NET-ASSETS>                                 1,314,901
<DIVIDEND-INCOME>                               22,626
<INTEREST-INCOME>                                3,614
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (8,240)
<NET-INVESTMENT-INCOME>                         18,000
<REALIZED-GAINS-CURRENT>                       379,936
<APPREC-INCREASE-CURRENT>                       58,032
<NET-CHANGE-FROM-OPS>                          455,968
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                         (19)
<DISTRIBUTIONS-OF-GAINS>                         (298)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            113
<NUMBER-OF-SHARES-REDEEMED>                       (51)
<SHARES-REINVESTED>                                 14
<NET-CHANGE-IN-ASSETS>                       (127,473)
<ACCUMULATED-NII-PRIOR>                          7,536
<ACCUMULATED-GAINS-PRIOR>                      200,957
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            6,928
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  8,369
<AVERAGE-NET-ASSETS>                         1,385,643
<PER-SHARE-NAV-BEGIN>                            25.66
<PER-SHARE-NII>                                   0.34
<PER-SHARE-GAIN-APPREC>                           8.17
<PER-SHARE-DIVIDEND>                            (0.35)
<PER-SHARE-DISTRIBUTIONS>                       (4.40)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              29.42
<EXPENSE-RATIO>                                   0.80
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 14
   <NAME> FIXED INCOME PORTFOLIO II, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          227,854
<INVESTMENTS-AT-VALUE>                         231,876
<RECEIVABLES>                                    3,828
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                                 4
<TOTAL-ASSETS>                                 235,715
<PAYABLE-FOR-SECURITIES>                         7,863
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        1,190
<TOTAL-LIABILITIES>                              8,209
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       216,715
<SHARES-COMMON-STOCK>                           19,770
<SHARES-COMMON-PRIOR>                           17,068
<ACCUMULATED-NII-CURRENT>                        4,574
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          1,526
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         3,847
<NET-ASSETS>                                   226,662
<DIVIDEND-INCOME>                                  516
<INTEREST-INCOME>                               14,032
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                  (1,011)
<NET-INVESTMENT-INCOME>                         13,537
<REALIZED-GAINS-CURRENT>                         4,333
<APPREC-INCREASE-CURRENT>                        3,019
<NET-CHANGE-FROM-OPS>                           20,889
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (13,889)
<DISTRIBUTIONS-OF-GAINS>                       (1,963)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          6,638
<NUMBER-OF-SHARES-REDEEMED>                    (4,981)
<SHARES-REINVESTED>                              1,045
<NET-CHANGE-IN-ASSETS>                           2,702
<ACCUMULATED-NII-PRIOR>                          4,660
<ACCUMULATED-GAINS-PRIOR>                        (446)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              776
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  1,035
<AVERAGE-NET-ASSETS>                           206,859
<PER-SHARE-NAV-BEGIN>                            11.23
<PER-SHARE-NII>                                   0.74
<PER-SHARE-GAIN-APPREC>                           0.39
<PER-SHARE-DIVIDEND>                            (0.79)
<PER-SHARE-DISTRIBUTIONS>                       (0.11)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.46
<EXPENSE-RATIO>                                   0.50
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 13
   <NAME> CASH RESERVES PORTFOLIO
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           98,515
<INVESTMENTS-AT-VALUE>                          98,515
<RECEIVABLES>                                       87
<ASSETS-OTHER>                                       3
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  98,605
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          141
<TOTAL-LIABILITIES>                                141
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        98,464
<SHARES-COMMON-STOCK>                           98,463
<SHARES-COMMON-PRIOR>                           78,497
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                    98,464
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                5,108
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (296)
<NET-INVESTMENT-INCOME>                          4,812
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                            4,812
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (4,812)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        334,996
<NUMBER-OF-SHARES-REDEEMED>                  (319,418)
<SHARES-REINVESTED>                              4,389
<NET-CHANGE-IN-ASSETS>                          19,967
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              231
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    370
<AVERAGE-NET-ASSETS>                            92,593
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                  0.052
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                           (0.052)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                   0.33
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 16
   <NAME> MORTGAGE-BACKED SECURITIES PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           41,894
<INVESTMENTS-AT-VALUE>                          42,660
<RECEIVABLES>                                    2,376
<ASSETS-OTHER>                                       2
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  45,038
<PAYABLE-FOR-SECURITIES>                         6,819
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          134
<TOTAL-LIABILITIES>                              6,953
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        39,281
<SHARES-COMMON-STOCK>                            3,540
<SHARES-COMMON-PRIOR>                            4,885
<ACCUMULATED-NII-CURRENT>                        1,007
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        (2,861)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                           658
<NET-ASSETS>                                    38,085
<DIVIDEND-INCOME>                                   88
<INTEREST-INCOME>                                4,202
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (259)
<NET-INVESTMENT-INCOME>                          4,031
<REALIZED-GAINS-CURRENT>                         1,189
<APPREC-INCREASE-CURRENT>                         (44)
<NET-CHANGE-FROM-OPS>                            5,176
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (3,646)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             99
<NUMBER-OF-SHARES-REDEEMED>                    (1,695)
<SHARES-REINVESTED>                                252
<NET-CHANGE-IN-ASSETS>                         (1,344)
<ACCUMULATED-NII-PRIOR>                          1,056
<ACCUMULATED-GAINS-PRIOR>                      (4,143)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              195
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    281
<AVERAGE-NET-ASSETS>                            51,734
<PER-SHARE-NAV-BEGIN>                            10.42
<PER-SHARE-NII>                                   0.91
<PER-SHARE-GAIN-APPREC>                           0.16
<PER-SHARE-DIVIDEND>                            (0.73)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.76
<EXPENSE-RATIO>                                   0.50
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 19
   <NAME> LIMITED DURATION PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          153,511
<INVESTMENTS-AT-VALUE>                         153,914
<RECEIVABLES>                                   15,817
<ASSETS-OTHER>                                       4
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 169,735
<PAYABLE-FOR-SECURITIES>                         8,395
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        5,770
<TOTAL-LIABILITIES>                             14,165
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       156,817
<SHARES-COMMON-STOCK>                           14,831
<SHARES-COMMON-PRIOR>                           11,868
<ACCUMULATED-NII-CURRENT>                        2,361
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        (4,002)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                           394
<NET-ASSETS>                                   155,570
<DIVIDEND-INCOME>                                  151
<INTEREST-INCOME>                                8,780
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (571)
<NET-INVESTMENT-INCOME>                          8,360
<REALIZED-GAINS-CURRENT>                           372
<APPREC-INCREASE-CURRENT>                          510
<NET-CHANGE-FROM-OPS>                            9,242
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        8,360
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          5,709
<NUMBER-OF-SHARES-REDEEMED>                    (3,383)
<SHARES-REINVESTED>                                637
<NET-CHANGE-IN-ASSETS>                          32,343
<ACCUMULATED-NII-PRIOR>                          1,710
<ACCUMULATED-GAINS-PRIOR>                      (4,668)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              408
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    584
<AVERAGE-NET-ASSETS>                           206,859
<PER-SHARE-NAV-BEGIN>                            10.38
<PER-SHARE-NII>                                   0.62
<PER-SHARE-GAIN-APPREC>                           0.08
<PER-SHARE-DIVIDEND>                            (0.59)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.49
<EXPENSE-RATIO>                                   0.43
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 21
   <NAME> MUNICIPAL PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           72,030
<INVESTMENTS-AT-VALUE>                          76,849
<RECEIVABLES>                                      716
<ASSETS-OTHER>                                       2
<OTHER-ITEMS-ASSETS>                               283
<TOTAL-ASSETS>                                  77,850
<PAYABLE-FOR-SECURITIES>                         2,529
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          161
<TOTAL-LIABILITIES>                              2,690
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        70,309
<SHARES-COMMON-STOCK>                            6,451
<SHARES-COMMON-PRIOR>                            4,857
<ACCUMULATED-NII-CURRENT>                           71
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (469)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         5,209
<NET-ASSETS>                                    75,120
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                3,341
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (321)
<NET-INVESTMENT-INCOME>                          3,020
<REALIZED-GAINS-CURRENT>                            15
<APPREC-INCREASE-CURRENT>                        2,297
<NET-CHANGE-FROM-OPS>                            5,332
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (2,960)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,774
<NUMBER-OF-SHARES-REDEEMED>                      (375)
<SHARES-REINVESTED>                                195
<NET-CHANGE-IN-ASSETS>                          20,584
<ACCUMULATED-NII-PRIOR>                             11
<ACCUMULATED-GAINS-PRIOR>                        (484)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              241
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    324
<AVERAGE-NET-ASSETS>                            64,215
<PER-SHARE-NAV-BEGIN>                            11.23
<PER-SHARE-NII>                                   0.53
<PER-SHARE-GAIN-APPREC>                           0.40
<PER-SHARE-DIVIDEND>                            (0.52)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.64
<EXPENSE-RATIO>                                   0.51
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 26
   <NAME> INTERMEDIATE DURATION PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           75,848
<INVESTMENTS-AT-VALUE>                          76,555
<RECEIVABLES>                                    9,264
<ASSETS-OTHER>                                       1
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  85,820
<PAYABLE-FOR-SECURITIES>                         8,516
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        5,185
<TOTAL-LIABILITIES>                             13,701
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        69,694
<SHARES-COMMON-STOCK>                            6,883
<SHARES-COMMON-PRIOR>                            1,169
<ACCUMULATED-NII-CURRENT>                        1,188
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            538
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                           699
<NET-ASSETS>                                    72,119
<DIVIDEND-INCOME>                                   54
<INTEREST-INCOME>                                2,816
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (231)
<NET-INVESTMENT-INCOME>                          2,639
<REALIZED-GAINS-CURRENT>                           681
<APPREC-INCREASE-CURRENT>                          680
<NET-CHANGE-FROM-OPS>                            4,000
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (1,772)
<DISTRIBUTIONS-OF-GAINS>                         (349)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          7,235
<NUMBER-OF-SHARES-REDEEMED>                    (1,612)
<SHARES-REINVESTED>                                 91
<NET-CHANGE-IN-ASSETS>                          60,102
<ACCUMULATED-NII-PRIOR>                            295
<ACCUMULATED-GAINS-PRIOR>                          233
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              167
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    242
<AVERAGE-NET-ASSETS>                            44,515
<PER-SHARE-NAV-BEGIN>                            10.28
<PER-SHARE-NII>                                   0.61
<PER-SHARE-GAIN-APPREC>                           0.27
<PER-SHARE-DIVIDEND>                            (0.53)
<PER-SHARE-DISTRIBUTIONS>                       (0.15)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.48
<EXPENSE-RATIO>                                   0.55
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 111
   <NAME> INTERNATIONAL EQUITY PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          566,025
<INVESTMENTS-AT-VALUE>                         681,896
<RECEIVABLES>                                    4,751
<ASSETS-OTHER>                                     901
<OTHER-ITEMS-ASSETS>                                38
<TOTAL-ASSETS>                                 687,586
<PAYABLE-FOR-SECURITIES>                         1,835
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       35,365
<TOTAL-LIABILITIES>                             37,200
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       479,226
<SHARES-COMMON-STOCK>                           41,463
<SHARES-COMMON-PRIOR>                           48,022
<ACCUMULATED-NII-CURRENT>                        9,914
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         44,500
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       116,591
<NET-ASSETS>                                   650,386
<DIVIDEND-INCOME>                               13,271
<INTEREST-INCOME>                                2,538
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (4,105)
<NET-INVESTMENT-INCOME>                         11,704
<REALIZED-GAINS-CURRENT>                        43,620
<APPREC-INCREASE-CURRENT>                       79,759
<NET-CHANGE-FROM-OPS>                          135,083
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (12,515)
<DISTRIBUTIONS-OF-GAINS>                      (12,996)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          6,875
<NUMBER-OF-SHARES-REDEEMED>                   (15,096)
<SHARES-REINVESTED>                              1,662
<NET-CHANGE-IN-ASSETS>                          14,445
<ACCUMULATED-NII-PRIOR>                         12,067
<ACCUMULATED-GAINS-PRIOR>                       12,858
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            3,236
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  4,285
<AVERAGE-NET-ASSETS>                           647,201
<PER-SHARE-NAV-BEGIN>                            13.24
<PER-SHARE-NII>                                   0.25
<PER-SHARE-GAIN-APPREC>                           2.71
<PER-SHARE-DIVIDEND>                            (0.26)
<PER-SHARE-DISTRIBUTIONS>                       (0.27)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.67
<EXPENSE-RATIO>                                   0.66
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 121
   <NAME>  MID-CAP GROWTH PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          410,143
<INVESTMENTS-AT-VALUE>                         539,374
<RECEIVABLES>                                   24,134
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 563,520
<PAYABLE-FOR-SECURITIES>                         7,142
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      108,215
<TOTAL-LIABILITIES>                            115,357
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       265,123
<SHARES-COMMON-STOCK>                           26,629
<SHARES-COMMON-PRIOR>                           19,648
<ACCUMULATED-NII-CURRENT>                        (284)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         53,809
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       129,231
<NET-ASSETS>                                   448,163
<DIVIDEND-INCOME>                                1,056
<INTEREST-INCOME>                                1,036
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (2,376)
<NET-INVESTMENT-INCOME>                          (284)
<REALIZED-GAINS-CURRENT>                        66,879
<APPREC-INCREASE-CURRENT>                       29,836
<NET-CHANGE-FROM-OPS>                           96,431
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (404)
<DISTRIBUTIONS-OF-GAINS>                       (4,075)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          8,139
<NUMBER-OF-SHARES-REDEEMED>                    (1,808)
<SHARES-REINVESTED>                                290
<NET-CHANGE-IN-ASSETS>                          44,882
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                       61,859
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          (1,961)
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                (2,459)
<AVERAGE-NET-ASSETS>                           392,380
<PER-SHARE-NAV-BEGIN>                            20.53
<PER-SHARE-NII>                                 (0.01)
<PER-SHARE-GAIN-APPREC>                           4.75
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (3.43)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              21.84
<EXPENSE-RATIO>                                   0.63
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 112
   <NAME> INTERNATIONAL EQUITY PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          566,025
<INVESTMENTS-AT-VALUE>                         681,896
<RECEIVABLES>                                    4,751
<ASSETS-OTHER>                                     901
<OTHER-ITEMS-ASSETS>                                38
<TOTAL-ASSETS>                                 687,586
<PAYABLE-FOR-SECURITIES>                         1,835
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        1,439
<TOTAL-LIABILITIES>                              3,274
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       479,226
<SHARES-COMMON-STOCK>                               40
<SHARES-COMMON-PRIOR>                               18
<ACCUMULATED-NII-CURRENT>                        9,914
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         44,500
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       116,591
<NET-ASSETS>                                   650,386
<DIVIDEND-INCOME>                               13,271
<INTEREST-INCOME>                                2,538
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (4,105)
<NET-INVESTMENT-INCOME>                         11,704
<REALIZED-GAINS-CURRENT>                        43,620
<APPREC-INCREASE-CURRENT>                       79,759
<NET-CHANGE-FROM-OPS>                          135,083
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          (4)
<DISTRIBUTIONS-OF-GAINS>                           (5)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             22
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  1
<NET-CHANGE-IN-ASSETS>                          14,445
<ACCUMULATED-NII-PRIOR>                         12,067
<ACCUMULATED-GAINS-PRIOR>                       12,858
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            3,236
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  4,285
<AVERAGE-NET-ASSETS>                           647,201
<PER-SHARE-NAV-BEGIN>                            13.23
<PER-SHARE-NII>                                   0.23
<PER-SHARE-GAIN-APPREC>                           2.69
<PER-SHARE-DIVIDEND>                            (0.25)
<PER-SHARE-DISTRIBUTIONS>                       (0.27)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.63
<EXPENSE-RATIO>                                   0.89
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 311
   <NAME> MID CAP VALUE PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          180,268
<INVESTMENTS-AT-VALUE>                         221,965
<RECEIVABLES>                                    2,451
<ASSETS-OTHER>                                       3
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 224,419
<PAYABLE-FOR-SECURITIES>                         2,510
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          411
<TOTAL-LIABILITIES>                              2,921
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       157,584
<SHARES-COMMON-STOCK>                           10,103
<SHARES-COMMON-PRIOR>                            3,482
<ACCUMULATED-NII-CURRENT>                          310
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         21,907
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        41,697
<NET-ASSETS>                                   221,498
<DIVIDEND-INCOME>                                1,201
<INTEREST-INCOME>                                  229
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,086)
<NET-INVESTMENT-INCOME>                            344
<REALIZED-GAINS-CURRENT>                        24,403
<APPREC-INCREASE-CURRENT>                       38,391
<NET-CHANGE-FROM-OPS>                           63,138
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (404)
<DISTRIBUTIONS-OF-GAINS>                       (4,075)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          8,139
<NUMBER-OF-SHARES-REDEEMED>                    (1,808)
<SHARES-REINVESTED>                                290
<NET-CHANGE-IN-ASSETS>                         170,922
<ACCUMULATED-NII-PRIOR>                            372
<ACCUMULATED-GAINS-PRIOR>                        1,587
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              924
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  1,116
<AVERAGE-NET-ASSETS>                           123,332
<PER-SHARE-NAV-BEGIN>                            14.49
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                           8.40
<PER-SHARE-DIVIDEND>                            (0.10)
<PER-SHARE-DISTRIBUTIONS>                       (1.01)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              21.80
<EXPENSE-RATIO>                                   0.90
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 312
   <NAME> MID CAP VALUE PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          180,268
<INVESTMENTS-AT-VALUE>                         221,965
<RECEIVABLES>                                    2,451
<ASSETS-OTHER>                                       3
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 224,419
<PAYABLE-FOR-SECURITIES>                         2,510
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          411
<TOTAL-LIABILITIES>                              2,921
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       157,584
<SHARES-COMMON-STOCK>                               57
<SHARES-COMMON-PRIOR>                                9
<ACCUMULATED-NII-CURRENT>                          310
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         21,907
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        41,697
<NET-ASSETS>                                   221,498
<DIVIDEND-INCOME>                                1,201
<INTEREST-INCOME>                                  229
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,086)
<NET-INVESTMENT-INCOME>                            344
<REALIZED-GAINS-CURRENT>                        24,403
<APPREC-INCREASE-CURRENT>                       38,391
<NET-CHANGE-FROM-OPS>                           63,138
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          (1)
<DISTRIBUTIONS-OF-GAINS>                           (9)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             47
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  1
<NET-CHANGE-IN-ASSETS>                         170,922
<ACCUMULATED-NII-PRIOR>                            372
<ACCUMULATED-GAINS-PRIOR>                        1,587
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              924
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  1,116
<AVERAGE-NET-ASSETS>                           123,332
<PER-SHARE-NAV-BEGIN>                            14.48
<PER-SHARE-NII>                                   0.01
<PER-SHARE-GAIN-APPREC>                           8.36
<PER-SHARE-DIVIDEND>                            (0.09)
<PER-SHARE-DISTRIBUTIONS>                       (1.01)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              21.75
<EXPENSE-RATIO>                                   1.09
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 221
   <NAME> BALANCED PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          383,663
<INVESTMENTS-AT-VALUE>                         437,376
<RECEIVABLES>                                    5,610
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 442,998
<PAYABLE-FOR-SECURITIES>                         6,307
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       62,098
<TOTAL-LIABILITIES>                             68,405
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       278,032
<SHARES-COMMON-STOCK>                           22,438
<SHARES-COMMON-PRIOR>                           21,781
<ACCUMULATED-NII-CURRENT>                        3,747
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         39,266
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        53,548
<NET-ASSETS>                                   374,593
<DIVIDEND-INCOME>                                3,815
<INTEREST-INCOME>                               10,178
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,961)
<NET-INVESTMENT-INCOME>                         12,032
<REALIZED-GAINS-CURRENT>                        45,178
<APPREC-INCREASE-CURRENT>                       24,679
<NET-CHANGE-FROM-OPS>                           81,889
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (12,124)
<DISTRIBUTIONS-OF-GAINS>                      (30,896)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          3,110
<NUMBER-OF-SHARES-REDEEMED>                    (5,724)
<SHARES-REINVESTED>                              3,271
<NET-CHANGE-IN-ASSETS>                          73,725
<ACCUMULATED-NII-PRIOR>                          4,707
<ACCUMULATED-GAINS-PRIOR>                       26,066
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            1,527
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,009
<AVERAGE-NET-ASSETS>                           339,375
<PER-SHARE-NAV-BEGIN>                            13.81
<PER-SHARE-NII>                                   0.51
<PER-SHARE-GAIN-APPREC>                           2.91
<PER-SHARE-DIVIDEND>                            (0.54)
<PER-SHARE-DISTRIBUTIONS>                       (1.39)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.30
<EXPENSE-RATIO>                                   0.58
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 222
   <NAME> BALANCED PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             APR-04-1997
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          383,663
<INVESTMENTS-AT-VALUE>                         473,376
<RECEIVABLES>                                    5,610
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 442,998
<PAYABLE-FOR-SECURITIES>                         6,307
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       62,098
<TOTAL-LIABILITIES>                             68,405
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       278,032
<SHARES-COMMON-STOCK>                            1,789
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                        3,747
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         39,266
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        53,548
<NET-ASSETS>                                   374,593
<DIVIDEND-INCOME>                                3,815
<INTEREST-INCOME>                               10,178
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,961)
<NET-INVESTMENT-INCOME>                         12,032
<REALIZED-GAINS-CURRENT>                        45,178
<APPREC-INCREASE-CURRENT>                       24,679
<NET-CHANGE-FROM-OPS>                           81,889
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                         (26)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            287
<NUMBER-OF-SHARES-REDEEMED>                       (31)
<SHARES-REINVESTED>                                  2
<NET-CHANGE-IN-ASSETS>                          73,725
<ACCUMULATED-NII-PRIOR>                          4,707
<ACCUMULATED-GAINS-PRIOR>                       26,066
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            1,527
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,009
<AVERAGE-NET-ASSETS>                           339,375
<PER-SHARE-NAV-BEGIN>                            13.11
<PER-SHARE-NII>                                   0.30
<PER-SHARE-GAIN-APPREC>                           2.09
<PER-SHARE-DIVIDEND>                            (0.20)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.30
<EXPENSE-RATIO>                                   0.73
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 223
   <NAME> BALANCED PORTFOLIO, ADVISER CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             NOV-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          383,663
<INVESTMENTS-AT-VALUE>                         437,376
<RECEIVABLES>                                    5,610
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 442,998
<PAYABLE-FOR-SECURITIES>                         6,307
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       62,098
<TOTAL-LIABILITIES>                             68,405
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       278,032
<SHARES-COMMON-STOCK>                              258
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                        3,747
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         39,266
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        53,548
<NET-ASSETS>                                   374,593
<DIVIDEND-INCOME>                                3,815
<INTEREST-INCOME>                               10,178
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,961)
<NET-INVESTMENT-INCOME>                         12,032
<REALIZED-GAINS-CURRENT>                        45,178
<APPREC-INCREASE-CURRENT>                       24,679
<NET-CHANGE-FROM-OPS>                           81,889
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (416)
<DISTRIBUTIONS-OF-GAINS>                       (1,236)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,812
<NUMBER-OF-SHARES-REDEEMED>                      (149)
<SHARES-REINVESTED>                                126
<NET-CHANGE-IN-ASSETS>                          73,725
<ACCUMULATED-NII-PRIOR>                          4,707
<ACCUMULATED-GAINS-PRIOR>                       26,066
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            1,527
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,009
<AVERAGE-NET-ASSETS>                           339,375
<PER-SHARE-NAV-BEGIN>                            14.05
<PER-SHARE-NII>                                   0.42
<PER-SHARE-GAIN-APPREC>                           2.60
<PER-SHARE-DIVIDEND>                            (0.38)
<PER-SHARE-DISTRIBUTIONS>                       (1.39)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.30
<EXPENSE-RATIO>                                   0.85
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 101
   <NAME> HIGH YIELD PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          508,751
<INVESTMENTS-AT-VALUE>                         537,450
<RECEIVABLES>                                   18,326
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 555,788
<PAYABLE-FOR-SECURITIES>                        15,855
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          791
<TOTAL-LIABILITIES>                             16,646
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       487,027
<SHARES-COMMON-STOCK>                           51,614
<SHARES-COMMON-PRIOR>                           31,105
<ACCUMULATED-NII-CURRENT>                       11,795
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         12,232
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        28,088
<NET-ASSETS>                                   539,142
<DIVIDEND-INCOME>                                1,443
<INTEREST-INCOME>                               38,219
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (2,081)
<NET-INVESTMENT-INCOME>                         37,581
<REALIZED-GAINS-CURRENT>                        15,044
<APPREC-INCREASE-CURRENT>                       24,005
<NET-CHANGE-FROM-OPS>                           76,630
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (34,334)
<DISTRIBUTIONS-OF-GAINS>                       (1,171)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         30,974
<NUMBER-OF-SHARES-REDEEMED>                   (12,813)
<SHARES-REINVESTED>                              2,349
<NET-CHANGE-IN-ASSETS>                         244,193
<ACCUMULATED-NII-PRIOR>                          8,657
<ACCUMULATED-GAINS-PRIOR>                      (1,353)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            1,558
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,125
<AVERAGE-NET-ASSETS>                           415,468
<PER-SHARE-NAV-BEGIN>                             9.32
<PER-SHARE-NII>                                   0.86
<PER-SHARE-GAIN-APPREC>                           0.87
<PER-SHARE-DIVIDEND>                            (0.87)
<PER-SHARE-DISTRIBUTIONS>                       (0.03)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.15
<EXPENSE-RATIO>                                   0.51
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 102
   <NAME> HIGH YIELD PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          508,751
<INVESTMENTS-AT-VALUE>                         537,450
<RECEIVABLES>                                   18,326
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 555,788
<PAYABLE-FOR-SECURITIES>                        15,855
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          791
<TOTAL-LIABILITIES>                             16,646
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       487,027
<SHARES-COMMON-STOCK>                            1,075
<SHARES-COMMON-PRIOR>                              552
<ACCUMULATED-NII-CURRENT>                       11,795
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         12,232
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        28,088
<NET-ASSETS>                                   539,142
<DIVIDEND-INCOME>                                1,443
<INTEREST-INCOME>                               38,219
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (2,081)
<NET-INVESTMENT-INCOME>                         37,581
<REALIZED-GAINS-CURRENT>                        15,044
<APPREC-INCREASE-CURRENT>                       24,005
<NET-CHANGE-FROM-OPS>                           76,630
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (628)
<DISTRIBUTIONS-OF-GAINS>                          (20)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,307
<NUMBER-OF-SHARES-REDEEMED>                      (833)
<SHARES-REINVESTED>                                 49
<NET-CHANGE-IN-ASSETS>                         244,193
<ACCUMULATED-NII-PRIOR>                          8,657
<ACCUMULATED-GAINS-PRIOR>                      (1,353)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            1,558
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,125
<AVERAGE-NET-ASSETS>                           415,468
<PER-SHARE-NAV-BEGIN>                             9.31
<PER-SHARE-NII>                                   0.84
<PER-SHARE-GAIN-APPREC>                           0.88
<PER-SHARE-DIVIDEND>                            (0.84)
<PER-SHARE-DISTRIBUTIONS>                       (0.03)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.16
<EXPENSE-RATIO>                                   0.70
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 103
   <NAME> HIGH YIELD PORTFOLIO, ADVISER CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             JAN-31-1997
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          508,751
<INVESTMENTS-AT-VALUE>                         537,450
<RECEIVABLES>                                   18,326
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 555,788
<PAYABLE-FOR-SECURITIES>                        15,855 
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          791
<TOTAL-LIABILITIES>                             16,646
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       487,027
<SHARES-COMMON-STOCK>                              426
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                       11,795
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         12,232
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        28,088
<NET-ASSETS>                                   539,142
<DIVIDEND-INCOME>                                1,443
<INTEREST-INCOME>                               38,219
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (2,081)
<NET-INVESTMENT-INCOME>                         37,581
<REALIZED-GAINS-CURRENT>                        15,044
<APPREC-INCREASE-CURRENT>                       24,005  
<NET-CHANGE-FROM-OPS>                           76,630
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                         (66)
<DISTRIBUTIONS-OF-GAINS>                             0   
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            557
<NUMBER-OF-SHARES-REDEEMED>                      (158)
<SHARES-REINVESTED>                                  7
<NET-CHANGE-IN-ASSETS>                         244,193
<ACCUMULATED-NII-PRIOR>                          8,657
<ACCUMULATED-GAINS-PRIOR>                      (1,353)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            1,558
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,125
<AVERAGE-NET-ASSETS>                           415,468
<PER-SHARE-NAV-BEGIN>                             9.39
<PER-SHARE-NII>                                   0.56
<PER-SHARE-GAIN-APPREC>                           0.59
<PER-SHARE-DIVIDEND>                            (0.39)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.15
<EXPENSE-RATIO>                                   0.78
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 021
   <NAME> FIXED INCOME PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                        3,955,497
<INVESTMENTS-AT-VALUE>                       4,010,740
<RECEIVABLES>                                   96,757
<ASSETS-OTHER>                                      67
<OTHER-ITEMS-ASSETS>                                55
<TOTAL-ASSETS>                               4,107,619
<PAYABLE-FOR-SECURITIES>                       251,715
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      549,707
<TOTAL-LIABILITIES>                            801,422
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     3,155,536
<SHARES-COMMON-STOCK>                          263,471
<SHARES-COMMON-PRIOR>                          151,296
<ACCUMULATED-NII-CURRENT>                       57,872
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         40,102
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        52,687
<NET-ASSETS>                                 3,306,197
<DIVIDEND-INCOME>                                8,065
<INTEREST-INCOME>                              173,302
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                (12,213)
<NET-INVESTMENT-INCOME>                        169,154
<REALIZED-GAINS-CURRENT>                        62,863
<APPREC-INCREASE-CURRENT>                       38,362
<NET-CHANGE-FROM-OPS>                          270,379
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    (149,960)
<DISTRIBUTIONS-OF-GAINS>                      (20,590)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        126,596
<NUMBER-OF-SHARES-REDEEMED>                   (26,436)
<SHARES-REINVESTED>                             12,016
<NET-CHANGE-IN-ASSETS>                       1,516,051
<ACCUMULATED-NII-PRIOR>                         42,529
<ACCUMULATED-GAINS-PRIOR>                          298
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            9,431
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 12,518
<AVERAGE-NET-ASSETS>                         2,515,555
<PER-SHARE-NAV-BEGIN>                            11.83
<PER-SHARE-NII>                                   0.80
<PER-SHARE-GAIN-APPREC>                           0.50
<PER-SHARE-DIVIDEND>                            (0.78)
<PER-SHARE-DISTRIBUTIONS>                       (0.13)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.22
<EXPENSE-RATIO>                                   0.49
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 022
   <NAME> FIXED INCOME PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-15-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                        3,955,497
<INVESTMENTS-AT-VALUE>                       4,010,740
<RECEIVABLES>                                   96,757
<ASSETS-OTHER>                                      67
<OTHER-ITEMS-ASSETS>                                55
<TOTAL-ASSETS>                               4,107,619
<PAYABLE-FOR-SECURITIES>                       251,715
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      549,707
<TOTAL-LIABILITIES>                            801,422
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     3,155,536
<SHARES-COMMON-STOCK>                          779,333
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                       57,872
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         40,102
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        52,687
<NET-ASSETS>                                 3,306,197
<DIVIDEND-INCOME>                                8,065
<INTEREST-INCOME>                              173,302
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                (12,213)
<NET-INVESTMENT-INCOME>                        169,154
<REALIZED-GAINS-CURRENT>                        62,863
<APPREC-INCREASE-CURRENT>                       38,362
<NET-CHANGE-FROM-OPS>                          270,379
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (341)
<DISTRIBUTIONS-OF-GAINS>                          (47)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            886
<NUMBER-OF-SHARES-REDEEMED>                      (133)
<SHARES-REINVESTED>                                 26
<NET-CHANGE-IN-ASSETS>                       1,516,051
<ACCUMULATED-NII-PRIOR>                         42,529
<ACCUMULATED-GAINS-PRIOR>                          298
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            9,431
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 12,518
<AVERAGE-NET-ASSETS>                         2,515,555
<PER-SHARE-NAV-BEGIN>                            11.80
<PER-SHARE-NII>                                   0.75
<PER-SHARE-GAIN-APPREC>                           0.40
<PER-SHARE-DIVIDEND>                            (0.60)
<PER-SHARE-DISTRIBUTIONS>                       (0.13)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.22
<EXPENSE-RATIO>                                   0.66
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 023
   <NAME> GLOBAL FIXED INCOME PORTFOLIO
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                  12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                           77,162
<INVESTMENTS-AT-VALUE>                          76,409
<RECEIVABLES>                                    1,867
<ASSETS-OTHER>                                       2
<OTHER-ITEMS-ASSETS>                               239
<TOTAL-ASSETS>                                  78,517
<PAYABLE-FOR-SECURITIES>                           528
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          496
<TOTAL-LIABILITIES>                              1,024
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        76,229
<SHARES-COMMON-STOCK>                            7,281
<SHARES-COMMON-PRIOR>                            6,113
<ACCUMULATED-NII-CURRENT>                        1,414
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            921
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       (1,071)
<NET-ASSETS>                                    77,493
<DIVIDEND-INCOME>                                  213
<INTEREST-INCOME>                                4,583
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   (441)
<NET-INVESTMENT-INCOME>                          4,355
<REALIZED-GAINS-CURRENT>                         (183)
<APPREC-INCREASE-CURRENT>                      (1,626)
<NET-CHANGE-FROM-OPS>                            2,546
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (4,111)
<DISTRIBUTIONS-OF-GAINS>                       (1,137)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,308
<NUMBER-OF-SHARES-REDEEMED>                      (579)
<SHARES-REINVESTED>                                439
<NET-CHANGE-IN-ASSETS>                          10,211
<ACCUMULATED-NII-PRIOR>                          2,358
<ACCUMULATED-GAINS-PRIOR>                        1,053
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              289
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    443
<AVERAGE-NET-ASSETS>                            77,113
<PER-SHARE-NAV-BEGIN>                            11.01
<PER-SHARE-NII>                                   0.60
<PER-SHARE-GAIN-APPREC>                         (0.22)
<PER-SHARE-DIVIDEND>                            (0.59)
<PER-SHARE-DISTRIBUTIONS>                       (0.16)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.64
<EXPENSE-RATIO>                                   0.57
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 181
   <NAME> SPECIAL PURPOSE FIXED INCOME PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          516,281
<INVESTMENTS-AT-VALUE>                         527,783
<RECEIVABLES>                                   11,716
<ASSETS-OTHER>                                      14
<OTHER-ITEMS-ASSETS>                                31
<TOTAL-ASSETS>                                 539,544
<PAYABLE-FOR-SECURITIES>                        18,433
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       27,066
<TOTAL-LIABILITIES>                             45,499
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       464,940
<SHARES-COMMON-STOCK>                           39,184
<SHARES-COMMON-PRIOR>                           36,517
<ACCUMULATED-NII-CURRENT>                        9,955
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          8,474
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        10,676
<NET-ASSETS>                                   494,045
<DIVIDEND-INCOME>                                1,471
<INTEREST-INCOME>                               34,172
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (2,335)
<NET-INVESTMENT-INCOME>                         33,308
<REALIZED-GAINS-CURRENT>                        14,952
<APPREC-INCREASE-CURRENT>                        5,621
<NET-CHANGE-FROM-OPS>                           53,521
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (33,514)
<DISTRIBUTIONS-OF-GAINS>                       (6,885)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          7,318
<NUMBER-OF-SHARES-REDEEMED>                    (7,553)
<SHARES-REINVESTED>                              2,902
<NET-CHANGE-IN-ASSETS>                          20,584
<ACCUMULATED-NII-PRIOR>                         11,292
<ACCUMULATED-GAINS-PRIOR>                          277
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            1,816
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,389
<AVERAGE-NET-ASSETS>                           483,144
<PER-SHARE-NAV-BEGIN>                            12.26
<PER-SHARE-NII>                                   0.85
<PER-SHARE-GAIN-APPREC>                           0.52
<PER-SHARE-DIVIDEND>                            (0.87)
<PER-SHARE-DISTRIBUTIONS>                       (0.18)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.58
<EXPENSE-RATIO>                                   0.49
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 182
   <NAME> SPECIAL PURPOSE FIXED INCOME PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          516,281
<INVESTMENTS-AT-VALUE>                         527,783
<RECEIVABLES>                                   11,716
<ASSETS-OTHER>                                      14
<OTHER-ITEMS-ASSETS>                                31
<TOTAL-ASSETS>                                 539,544
<PAYABLE-FOR-SECURITIES>                        18,433
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       27,066
<TOTAL-LIABILITIES>                             45,499
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       464,940
<SHARES-COMMON-STOCK>                              100
<SHARES-COMMON-PRIOR>                               64
<ACCUMULATED-NII-CURRENT>                        9,955
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          8,474
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        10,676
<NET-ASSETS>                                   494,045
<DIVIDEND-INCOME>                                1,471
<INTEREST-INCOME>                               34,172
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (2,335)
<NET-INVESTMENT-INCOME>                         33,308
<REALIZED-GAINS-CURRENT>                        14,952
<APPREC-INCREASE-CURRENT>                        5,621
<NET-CHANGE-FROM-OPS>                           53,521
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                         (68)
<DISTRIBUTIONS-OF-GAINS>                          (11)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             34
<NUMBER-OF-SHARES-REDEEMED>                        (4)
<SHARES-REINVESTED>                                  7
<NET-CHANGE-IN-ASSETS>                          20,584
<ACCUMULATED-NII-PRIOR>                         11,292
<ACCUMULATED-GAINS-PRIOR>                          277
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            1,816
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  2,389
<AVERAGE-NET-ASSETS>                           483,144
<PER-SHARE-NAV-BEGIN>                            12.24
<PER-SHARE-NII>                                   0.82
<PER-SHARE-GAIN-APPREC>                           0.53
<PER-SHARE-DIVIDEND>                            (0.85)
<PER-SHARE-DISTRIBUTIONS>                       (0.18)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              12.56
<EXPENSE-RATIO>                                   0.67
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 281
   <NAME> MULTI-ASSET-CLASS PORTFOLIO, INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          157,767
<INVESTMENTS-AT-VALUE>                         178,014 
<RECEIVABLES>                                   14,814
<ASSETS-OTHER>                                      31
<OTHER-ITEMS-ASSETS>                               557
<TOTAL-ASSETS>                                 193,416
<PAYABLE-FOR-SECURITIES>                        14,806 
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          380
<TOTAL-LIABILITIES>                             15,186
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       139,265
<SHARES-COMMON-STOCK>                           12,694
<SHARES-COMMON-PRIOR>                           10,551
<ACCUMULATED-NII-CURRENT>                        1,202
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         17,385
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        20,378
<NET-ASSETS>                                   178,230
<DIVIDEND-INCOME>                                1,775
<INTEREST-INCOME>                                3,986
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,129)
<NET-INVESTMENT-INCOME>                          4,632
<REALIZED-GAINS-CURRENT>                        18,881
<APPREC-INCREASE-CURRENT>                       11,636 
<NET-CHANGE-FROM-OPS>                           35,149
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (5,893)
<DISTRIBUTIONS-OF-GAINS>                      (11,866)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          6,059
<NUMBER-OF-SHARES-REDEEMED>                    (5,319)
<SHARES-REINVESTED>                              1,403 
<NET-CHANGE-IN-ASSETS>                          45,598
<ACCUMULATED-NII-PRIOR>                          3,042
<ACCUMULATED-GAINS-PRIOR>                       10,291
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              923
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  1,278
<AVERAGE-NET-ASSETS>                           151,126
<PER-SHARE-NAV-BEGIN>                            12.28
<PER-SHARE-NII>                                   0.38
<PER-SHARE-GAIN-APPREC>                           2.57
<PER-SHARE-DIVIDEND>                            (0.51)
<PER-SHARE-DISTRIBUTIONS>                       (1.08)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.64
<EXPENSE-RATIO>                                   0.74
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 000
   <NAME> MULTI-ASSET-CLASS PORTFOLIO, INVESTMENT CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             OCT-01-1996
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          157,767
<INVESTMENTS-AT-VALUE>                         178,014
<RECEIVABLES>                                   14,814
<ASSETS-OTHER>                                      31
<OTHER-ITEMS-ASSETS>                               557
<TOTAL-ASSETS>                                 193,416
<PAYABLE-FOR-SECURITIES>                        14,806
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          380
<TOTAL-LIABILITIES>                             15,186
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       139,265
<SHARES-COMMON-STOCK>                              372
<SHARES-COMMON-PRIOR>                              250
<ACCUMULATED-NII-CURRENT>                        1,202
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         17,385
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        20,378
<NET-ASSETS>                                   178,230
<DIVIDEND-INCOME>                                1,775
<INTEREST-INCOME>                                3,986
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (1,129)
<NET-INVESTMENT-INCOME>                          4,632
<REALIZED-GAINS-CURRENT>                        18,881
<APPREC-INCREASE-CURRENT>                       11,636
<NET-CHANGE-FROM-OPS>                           35,149
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (143)
<DISTRIBUTIONS-OF-GAINS>                         (275)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             90
<NUMBER-OF-SHARES-REDEEMED>                        (4)
<SHARES-REINVESTED>                                 36
<NET-CHANGE-IN-ASSETS>                          45,598
<ACCUMULATED-NII-PRIOR>                          3,042
<ACCUMULATED-GAINS-PRIOR>                       10,291
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              923
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  1,278
<AVERAGE-NET-ASSETS>                           151,126
<PER-SHARE-NAV-BEGIN>                            12.27
<PER-SHARE-NII>                                   0.36
<PER-SHARE-GAIN-APPREC>                           2.57
<PER-SHARE-DIVIDEND>                            (0.49)
<PER-SHARE-DISTRIBUTIONS>                       (1.08)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.63
<EXPENSE-RATIO>                                   0.96
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000741375
<NAME> MAS FUNDS
<SERIES>
   <NUMBER> 122
   <NAME>  MID-CAP GROWTH PORTFOLIO, ADVISOR CLASS
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1997
<PERIOD-START>                             JAN-31-1997
<PERIOD-END>                               SEP-30-1997
<INVESTMENTS-AT-COST>                          410,143
<INVESTMENTS-AT-VALUE>                         539,374
<RECEIVABLES>                                   24,134
<ASSETS-OTHER>                                      12
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 563,520
<PAYABLE-FOR-SECURITIES>                         7,142
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      108,215
<TOTAL-LIABILITIES>                            115,357
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       265,123
<SHARES-COMMON-STOCK>                                0
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                        (284)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         53,809
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       129,231
<NET-ASSETS>                                   448,163
<DIVIDEND-INCOME>                                1,056
<INTEREST-INCOME>                                1,036
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   2,376
<NET-INVESTMENT-INCOME>                          (284)
<REALIZED-GAINS-CURRENT>                        66,879
<APPREC-INCREASE-CURRENT>                       29,836
<NET-CHANGE-FROM-OPS>                           96,431
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                          44,882
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                       61,859
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          (1,961)
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                (2,459)
<AVERAGE-NET-ASSETS>                                 0
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                      0
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>


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