MAS FUNDS /MA/
497, 1998-01-20
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<PAGE>


- --MAS---------------------------------------------ADVISER CLASS PROSPECTUS----
- ---------                                                                   --
MAS FUNDS                                             


                                Equity Portfolio

                                January 20, 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-eight
 portfolios, one of which is described in this Prospectus. The portfolio
 operates as a separate diversified investment company. The investment
 objective of the portfolio is described with a summary of investment policies
 as referenced below. This Prospectus offers the Adviser Class Shares of the
 Fund. The Fund also offers Institutional Class Shares and Investment Class
 Shares.

- --------------------------------------------------------------------------------
                            PORTFOLIO PAGE REFERENCE

                      How to Use This Prospectus:                   3


                      Portfolio Summary:
                        Equity                                      5

                      Prospectus Glossary:
                        Strategy                                   10
                        Investments                                10

                      General Shareholder

                       Information:                                16


                      Table of Contents:                           28

- --------------------------------------------------------------------------------
  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, 1997 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 OR ANY STATE SECURITIES COMMISSION NOR HAS
              THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE
               SECURITIES COMMISSION PASSED UPON THE ACCURACY OR
                          ADEQUACY OF THIS PROSPECTUS.
           ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.





   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 the 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%


                    Investment                                Total
                     Advisory             Other             Operating
 Portfolio             Fees              Expenses            Expenses
- -----------         ------------         ----------         ----------
Equity               0.500%               0.150%             0.900%
                                                     
                                                         
                                                
Where applicable as described in Financial Highlights, the Total Operating
Expense ratio reflected in the table above is 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.


EXAMPLE


The purpose of this table is to assist in understanding the various expenses
that a shareholder in the 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              $29              $50           $111
                                                             
                                                           
- --------------------------------------------------------------------------------
MAS Funds - 2          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

HOW TO USE THIS PROSPECTUS



A PROSPECTUS SUMMARY begins on page 3;

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

GENERAL INFORMATION including INVESTMENT LIMITATIONS pertinent to the portfolio
begins on page 8;

SUMMARY PAGE for the portfolio's Objective, Policies and Strategies begins on
page 9;

The PROSPECTUS GLOSSARY which defines specific Allowable Investments, Policies
and Strategies printed in bold type throughout this Prospectus begins on page
10;

GENERAL SHAREHOLDER INFORMATION begins on page 16.



PROSPECTUS SUMMARY


Equity - seeks to achieve above-average total return over a market cycle of
three to five years, consistent with reasonable risk, by investing primarily in
a diversified portfolio of Common Stocks of companies which are deemed by the
Adviser to have earnings growth potential greater than the economy in general
and greater than the expected rate of inflation.

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


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


o Fixed-Income Securities that may be acquired by the portfolio will be affected
  by general changes in interest rates resulting in increases or decreases in
  the value of the obligations held by the 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;

o Investments in 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 the portfolio's net asset value;


- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Funds - 3
<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 The 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 the portfolio could not close out a
  futures or options position when it would be most advantageous to do so;

o The portfolio may invest in certain instruments such as Forwards, certain
  types of Futures & Options, certain types of 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 Investments in foreign securities involve certain special considerations which
  are not typically associated with investing in U.S. companies. See Foreign
  Investing. The portfolios investing in foreign securities may also engage in
  foreign currency exchange transactions. See Forwards, Futures & Options, and
  Swaps.


HOW TO INVEST: Adviser Class Shares of the 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 the 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"
or "MAS") 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 counseling services to employee benefit plans,
endowments, foundations and other institutional investors, and as of September
30, 1997 had in excess of $55.7 billion in assets under management.



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


ADMINISTRATIVE SERVICES: The Adviser provides the Fund directly, or through
third parties, with fund administration services. Chase Global Funds Services
Company, a subsidiary of The Chase Manhattan Bank serves as Transfer Agent to
the Fund. See Administrative Services.

- --------------------------------------------------------------------------------
MAS Funds - 4          Terms in bold type are defined in the Prospectus Glossary
<PAGE>

            Financial Highlights -- Fiscal Years Ended September 30
Selected per share data and ratio 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
and incorporated by reference in the Statement of Additional Information. The
Fund's financial statements for the year ended September 30, 1996 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 Portfolio had not commenced operations
as of September 30, 1996, therefore, Institutional Class share financial
information is provided to investors for informational purposes only and should
be referred to as a historical guide to the portfolio's operations and
expenses. Past performance does not indicate future results.


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


<TABLE>
<CAPTION>
                                     Net Gains                      Dividend
        Net Asset                    or Losses                    Distributions     Capital Gain
         Value-         Net        on Securities    Total from        (net          Distributions    Other
        Beginning    Investment    (realized and    Investment     investment       (realized net    Distri-
        of Period      Income       unrealized)     Activities       income)       capital gains)    butions
        -----------  ------------  ---------------  ------------  ---------------  ----------------  ---------
<S>     <C>          <C>           <C>              <C>           <C>              <C>               <C>
Equity Portfolio (Commencement of Institutional Class Operations 11/4/84)#
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)             --
1987     14.09        0.43          3.67             4.10         ( 0.41)          ( 0.64)             --



<CAPTION>
                     Net Asset                Net Assets-      Ratio of      Ratio of
         Total        Value-                    End of         Expenses     Net Income    Annual      Average
        Distri-       End of       Total        Period        to Average    to Average   Turnover    Commission
        butions       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 11/4/84)#
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
1987     (1.05)       17.14        30.89           322,803       0.66          2.88         66

</TABLE>

*   Annualized

**  Total return figures for partial years are not annualized.
#   For the years ended September 30, 1995 and 1996, the Ratio of Expenses to
    Average Net Assets for the Equity Portfolio excludes the effect of expense
    offsets. If expense offsets were included, the Ratio of Expenses to Average
    Net Assets would be 0.60% and 0.60%, respectively for the Equity Portfolio.
##  For fiscal years beginning on or after Sepember 1, 1995 a fund is required
    to disclose the average commission rate per share it paid for trades on
    which commissions were charged.


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

<PAGE>


YIELD AND TOTAL RETURN


From time to time the portfolio 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 the 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). 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 year in
the period might have been greater or less than the average for the entire
period.

In addition to average annual total return, the portfolio may also quote an
aggregate total return for various periods representing the cumulative change
in value of an investment in the portfolio for a specific 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 yield of the portfolio is computed by dividing the net investment income
per share (using the average number of shares entitled to receive dividends)
earned during the 30-day period stated in the advertisement 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
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 portfolio's reports to
shareholders. The portfolio may also advertise or quote a yield which is gross
of expenses.

The performance of the 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.


- --------------------------------------------------------------------------------
MAS Funds - 6          Terms in bold type are defined in the Prospectus Glossary
<PAGE>


GENERAL INFORMATION


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


     Objective: The 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 the portfolio may
not be as great as that achieved by another portfolio that can invest in a
broader range of securities. The objective of the portfolio is fundamental and
may only be changed with approval of holders of a majority of the shares of the
portfolio. The achievement of the portfolio's objective cannot be assured.


     Suitability: The portfolio is designed for long-term investors who can
accept the risks entailed in investing in the stock and bond markets, and is
not meant to provide a vehicle for playing short-term swings in the market. The
portfolio is 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 the portfolio 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: The 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, the 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: The portfolio 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 portfolio generally without regard to
restrictions on annual turnover . In general, the portfolio will not trade for
short-term profits, but when circumstances warrant, investments may be sold
without regard to the length of time held. The annual turnover rate of the
portfolio may exceed 100%.


     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 portfolio 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.


     Cash Equivalents/Temporary Defensive Investing: Although the portfolio
intends to remain substantially fully invested, a small percentage of the
portfolio's assets are generally held in the form of Cash Equivalents in



- --------------------------------------------------------------------------------
Terms in bold type are defined in the Prospectus Glossary          MAS Funds - 7
<PAGE>


order to meet redemption requests and otherwise manage the daily affairs of the
portfolio. In addition, the 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 the portfolio
without regard to the portfolio's usual average weighted maturity.

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

     Investment Limitations: The 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, the 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;

     (b) with respect to 75% of its assets, the 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;

     (c) the portfolio will not 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 (1) there shall be no limitation
on the purchase of obligations issued or guaranteed by the U.S. Government, its
agencies or instrumentalities; (2) utility companies will be divided according
to their services, for example, gas, gas transmission, electric and telephone
will each be considered a separate industry; (3) 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; and (4) asset-backed securities will be
classified according to the underlying assets securing such securities;



     (d) the portfolio will not make loans except (i) by purchasing debt
securities in accordance with its investment objectives and policies, or
entering into Repurchase Agreements, (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 Investment Company Act of 1940, as
amended or the Rules and Regulations, or interpretations or orders of the
Securities and Exchange Commission thereunder;

     (e) the portfolio will not borrow money, except (i) as a temporary measure
for extraordinary or emergency purposes or (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);

     (f) the portfolio may pledge, mortgage or hypothecate assets in an amount
up to 50% of its total assets, provided that the portfolio may also segregate
assets without limit in order to comply with the requirements of Section 18(f)
of the Investment Company Act of 1940, (the "1940 Act"), and applicable
interpretations thereof published from time to time by the Securities and
Exchange Commission ("SEC") and its staff; and

     (g) the portfolio will not 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.


- --------------------------------------------------------------------------------
MAS Funds - 8          Terms in bold type are defined in the Prospectus Glossary
<PAGE>


     Limitations (a), (b), (c), (d) and (e), 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 portfolio. The 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 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.



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


Comparative Index: S&P 500 Index


Strategies:     Core Equity Investing


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

PROSPECTUS GLOSSARY


CHARACTERISTICS AND RISKS OF STRATEGY AND INVESTMENTS



STRATEGY


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 MAS's
outlook for the economy and different market sectors, the mix between value
stocks and growth stocks will change.




INVESTMENTS



The portfolio may invest in the securities defined below in accordance with its
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 Depositary 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.



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).


The 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 portfolio 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


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

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) The 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.


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. The portfolio will buy
Corporates subject to any quality constraints. If a security held by the
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 (Swaps,
Caps, Floors, Puts, etc., but excluding CMOs, Forwards, Futures and Options,
and SMBS) with counterparties approved by MAS 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 Notes and
Swaps. See the portfolio's listing of Allowable Investments to determine which
of these the portfolio may hold.


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


Equity Securities: Commonly include but are not limited to Common Stock,
Preferred Stock, ADRs, Rights, Warrants, Convertibles, and Foreign Equities.
See the portfolio's listing of Allowable Investments to determine which of the
above the portfolio can 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, Convertibles, Floaters, Cash
Equivalents, Repurchase Agreements, Preferred Stock, and Foreign Bonds. See the
portfolio's listing of Allowable Investments to determine which securities the
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.

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; and (3) non-government
foreign corporate debt securities.

Foreign Currency: The portfolio may invest in foreign securities and will
regularly transact security purchases and sales in foreign currencies. The
portfolio 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 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.


The 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
portfolio 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 the portfolio has or expects to have portfolio
exposure. The portfolio 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. The
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.

The 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, the 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


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


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,
the 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 the portfolio's obligation under the forward contract. On the date
of maturity, the 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 those transactions create residual foreign
currency exposure. When the 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.


The 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 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 the portfolio and the prices of futures and options relating
to the stocks, bonds or futures contracts purchased or sold by the 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 the 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 the 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.


Investment Companies: The portfolio is permitted to invest in shares of other
open-end or closed-end investment companies. The 1940 Act, as amended,
generally prohibits the portfolio 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 portfolio from acquiring in the aggregate more than
10% of the outstanding voting shares of any registered closed-end investment
company.


To the extent the 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 portfolio 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 Funds - 13
<PAGE>

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 the 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 portfolio may pool its 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 portfolio will incur lower transaction costs and potentially obtain
higher rates of interest on such repurchase agreements. The portfolio's
participation in the income from jointly purchased repurchase agreements will
be based on that portfolio's percentage share in the total purchase 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.


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, the
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 portfolio 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.


The 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 the portfolio receiving or paying, as the
case may be, only the net amount of the two returns. The 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. The portfolio will not enter into any
swap agreement unless the counterparty meets the rating requirements set forth
in guidelines established by the Fund's 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 the portfolio is
contractually obligated to make. If the other party to an interest rate or
total rate of return swap defaults, the portfolio's risk of loss consists of
the net amount of interest payments that the 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.


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


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, the 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
the 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. The portfolio will
maintain with the custodian a segregated account consisting of cash or liquid
securities in an amount at least equal to these commitments.


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 coupon obligations 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.

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

GENERAL SHAREHOLDER INFORMATION



PURCHASE OF SHARES


Adviser Class Shares 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.



Adviser Class Shares of the portfolio may be purchased at the net asset value
per share next determined after receipt of the purchase order. The portfolio
determines net asset value as described under Other Information-Valuation of
Shares each day that the portfolio is 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 the MAS Funds, c/o Miller Anderson &
Sherrerd, LLP, One Tower Bridge, West Conshohocken, Pennsylvania 19428-0868
together with a check ($500,000 minimum) payable to MAS Funds.



The portfolio 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 purchases made by check in any
portfolio are not permitted to be redeemed 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 the 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. 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 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: (Equity Portfolio, Account Number, Account Name)



Additional Investments: Additional investments of Adviser Class Shares at net
asset value may be made at any time (minimum investment $1,000) by mailing a
check (payable to MAS Funds) to MAS Funds' Client Services

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


Group at the address noted under Initial Investments 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. 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 Adviser Class Shares 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 subsequent investment amounts.



Purchases of the portfolio's Adviser Class 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 portfolio 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 portfolio 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



Adviser Class Shares of the portfolio may be redeemed by mail, or, if
authorized, by telephone. No charge is made for redemptions. The value of
Adviser Class 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: The portfolio will redeem Adviser Class 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.

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

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
NYSE, the Custodian, or the Fund is closed (see Other Information-Closed
Holidays) or under any emergency circumstances as determined by the Securities
and Exchange Commission.

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 Securities and Exchange
Commission. 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 registered 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.

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

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 Portfolio:

     Net asset value per share is determined by dividing the total market value
of the portfolio's investments and other assets, less any liabilities, by the
total outstanding shares of the 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 value of other assets and securities for which no quotations
are readily available (including restricted securities) are determined in good
faith at fair value using methods approved by the Trustees.


DIVIDENDS, CAPITAL GAINS DISTRIBUTIONS AND TAXES: Dividends and Capital Gains
Distributions: 

o The Equity Portfolio normally distributes substantially all of its net
  investment income in the form of quarterly dividends.

If the 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 portfolio normally distributes such gains with the last dividend 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.


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.


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

Federal Taxes: The following summary of Federal income tax consequences 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 federal income tax treatment of the portfolio or
its shareholders. In addition, state and local tax consequences of an
investment in the portfolio may differ from the Federal income tax consequences
described below. Accordingly, shareholders are urged to consult their tax
advisers regarding specific questions as to federal, state and local taxes.


The portfolio intends to qualify for taxation as a regulated investment company
under the Internal Revenue Code of 1986 (the "Code") so that the portfolio will
not be subject to Federal income tax to the extent it distributes net
investment company taxable income and net capital gains (the excess of net
long-term capital gain over net short-term capital loss) to shareholders. The
portfolio is treated as a separate entity for Federal income tax purposes and
is not combined with any of the Funds' other portfolios. Dividends, either in
cash or reinvested in shares, paid by the portfolio from net investment income
will be taxable to shareholders as ordinary income.

Whether paid in cash or additional shares of the portfolio, capital gains
distributions are taxable to shareholders at capital gains rates. Corporate
shareholders may be entitled to a dividends-received deduction for the portion
of dividends they receive which are attributable to dividends received by the
portfolio from U.S. corporations. Shareholders are notified annually by the
Fund as to Federal tax status of dividends and distributions paid by the
portfolio. Such dividends and distributions may also be subject to state and
local taxes.

Exchanges and redemptions of shares in the portfolio are taxable events for
Federal income tax purposes. Individual shareholders may also be subject to
state and municipal taxes on such exchanges and redemptions.

The portfolio intends to declare and pay dividends and capital gain
distributions so as to avoid imposition of the Federal excise tax. To do so,
the portfolio expects to distribute an amount at least equal to (i) 98% of its
calendar year ordinary income, (ii) 98% of its capital gains net income (the
excess of short and long-term capital gain over short and long-term capital
loss) for the one-year period ending October 31st, and (iii) 100% of any
undistributed ordinary and capital gain net income from the prior year.
Dividends declared in October, November or December by the portfolio will be
deemed to have been paid by such portfolio and received by shareholders on
December 31st of the year declared provided that the dividends are paid before
February 1 of the following year.


The Fund is required by Federal law to withhold 31% of reportable payments
(which may include dividends, capital gains distributions, and redemptions)
paid to shareholders who have not complied with IRS regulations. In order to
avoid this withholding requirement, you must certify on the Account
Registration Form that your Social Security or Taxpayer Identification Number
provided is correct and that you are not currently subject to back-up
withholding, or that you are exempt from back-up withholding.


Foreign Income Taxes: Investment income received by the portfolio 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 entitle the portfolio 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 portfolio's assets to be invested within
various countries is not known. The portfolio intends to operate so as to
qualify for treaty reduced rates of tax where applicable. The portfolio will
not be able to elect to treat shareholders as having paid their proportionate
share of such taxes for foreign tax credit purposes.


State and Local Taxes: The Fund is formed as a Pennsylvania Business Trust and
therefore is not liable, under current law, for any corporate income or
franchise tax of the Commonwealth of Pennsylvania. The Fund will provide
Pennsylvania taxable values on a per share basis upon request.

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


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
September 30, 1997 had in excess of $55.7 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, based on the following annual percentage rates, to
the portfolio's average daily net assets for the quarter:





                                                  Rate
                                                 ------
                Equity Portfolio                 .500%
                                         
                                 

For the fiscal year ended September 30, 1996, the Adviser received 0.500% as
compensation for its services.



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

PORTFOLIO MANAGEMENT:


The investment professionals of MAS who are primarily responsible for the
day-to-day management of the portfolio are as follows:

Arden C. Armstrong, Managing Director, Morgan Stanley, joined MAS in 1986. She
assumed responsibility for the Equity Portfolio in 1994.

Kurt Feuerman, Managing Director, Morgan Stanley, joined Morgan Stanley in
1990. He assumed responsibility for the Equity Portfolio in 1996.

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.

Robert J. Marcin, Managing Director, Morgan Stanley, joined MAS in 1988. He
assumed responsibility for 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 Portfolio in 1987.


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.

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.

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 the portfolio and directs the Adviser to use
its best efforts to obtain the best execution with respect to all transactions
for the portfolio. In doing so, the portfolio may pay higher commission rates
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 effecting the transaction.


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


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 the portfolio may also be
appropriate for other clients served by the Adviser (including other portfolios
of the Fund). If purchase or sale of securities consistent with the investment
policies of the 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. MAS 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 the portfolio are fully paid and non-assessable, and have no
preference as to conversion, exchange, dividends, retirement or other features.
The shares of the 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,
as amended, 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 Fund's 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.


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

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; Direcctor, Reliance Group Holdings; Director, Melville 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, Alexander and Alexander Services, Inc.;
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 Funds - 24         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  | Street or P.O. Box |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
will be mailed        |                                                                                                             
to 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 States Citizen  [ ] Resident Alien  [ ] Non-Resident Alien, Indicate Country of Residence _______
- ------------------------------------------------------------------------------------------------------------------------------------
 (2)                  | 
INTERESTED PARTY      |
OPTION                |
                      |                                                          
In addition to the    |
account statement     |
sent to the above     |Attention   |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
registered address,   | Company                                                                                                     
the Fund is           | (If Applicable)  |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
authorized to mail    |                                                                                                             
duplicate statements  | Street or P.O. Box |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
to the name and       |                             
address provided      | City   |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_| State |_|_|  Zip  |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
at right.             |                                                                                                             
                      | Telephone No.  |_|_|_|-|_|_|_|-|_|_|_|_|_|                                                                  
For additional        |                                                                                                             
interested party      |
mailings, please      |
attach a separate     |
sheet.                |
- ------------------------------------------------------------------------------------------------------------------------------------

(3) INVESTMENT                  [ ] Equity Portfolio                                   $_________________

     For Purchase of:
- ------------------------------------------------------------------------------------------------------------------------------------
    
(4) TAXPAYER IDENTIFICATION NUMBER
     Part 1.

        Social Security Number                                           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       
                 or                              taxpayer identification number will be or subject to backup withholding at a 31%
    Employer Identification Number               rate on ordinary income and capital gains distribution as well as redemptions.  
                                                 Backup withholding is not an additional tax; the tax liability of person subject
        |_|_|_|-|_|_|-|_|_|_|_|                  to backup withholding will be reduced by the amount of tax withheld.            
                                                                                                                                 
Part 2. BACKUP WITHHOLDING                       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  
[ ] Check the box if the account                 required to, but failed to, file a return which would have included a reportable
Backup Withholding under the provisions          interest or dividend payment. If you have been is subject to so notified, check 
of Section 3406(a)(1)(C) of the                  the box in PART 2 at left.                                                      
Internal Revenue Code.                                                                                                           
                                                 
- ------------------------------------------------------------------------------------------------------------------------------------




  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     |  (8) WIRING                               
any) will be reinvested in additional shares if no box is checked below. The        |      INSTRUCTIONS                         
instructions provided below may only be changed by written notification.            |      For purchasing Shares by wire,       
                                                                                    |      please send a Fedwire payment to:    
                                                                                    |                                           
[ ] Income dividends and capital gains to be paid in cash.                          |      The Chase Manhattan Bank             
                                                                                    |      1 Chase Manhattan Plaza              
[ ] Income dividends to be paid in cash and capital gains distribution in           |      New York, NY 10081                   
    additional shares.                                                              |      ABA# 021000021                       
                                                                                    |      DDA# 910-2-734143                    
[ ] Income dividends and capital gains to be reinvested in                          |                                        
    additional shares.                                                              |      Attn: MAS Funds Subscription Account 
                                                                                    |      Ref. Equity Portfolio, your    
If cash option is chosen, please indicate instructions below:                       |           Account number,                 
                                                                                    |           your Account name)              
[ ] 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.     |
                                                                                    |
- ------------------------------------------------------------------------------------------------------------------------------------

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)__________________________________________________________      |                       FOR INTERNAL USE ONLY                  | 
Signature                                             Date         |                                                              | 
                                                                   | (X)________________________________________________________  | 
(X)__________________________________________________________      |       Signature                                    Date      | 
Signature                                             Date         |                                                              | 
                                                                   |  __________________________________________________________  | 
(X)__________________________________________________________      |                                                              | 
Signature                                             Date         |                 O [ ]   F [ ]     OR [ ]    S [ ]            | 
                                                                   |                                                              | 
          This application is separate from the prospectus.        |                                                              | 
                                                                   |______________________________________________________________| 

  MILLER
  ANDERSON
__& SHERRERD, LLP __ ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185 ________________________________________________ 

                                                                                                                     SIDE TWO OF TWO
</TABLE>

<PAGE>


                               January 20, 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
   Pennsylvania 19428-2899                   02108-0913
                   
                                          
                            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   .......................................     3
Financial Highlights .......................................     5
Yield and Total Return  ....................................     6
Investment Suitability  ....................................     7
Investment Limitations  ....................................     8
Portfolio Summaries  .......................................     9
Prospectus Glossary:
 Strategy   ................................................    10
 Investments   .............................................    10
General Shareholder Information  ...........................    16
    Purchase of Shares  ....................................    16
 


                                                               Page
                                                              ------
    Redemption of Shares   .................................    17
    Shareholder Services   .................................    18
    Valuation of Shares ....................................    19
    Dividends, Capital Gains Distributions
     and Taxes .............................................    19
Investment Adviser   .......................................    21
Portfolio Management .......................................    22
Administrative Services    .................................    22
Distribution Plan ..........................................    22
General Distribution Agent .................................    22
Portfolio Transactions  ....................................    22
Other Information ..........................................    23
Trustees and Officers   ....................................    24


 

- --------------------------------------------------------------------------------
MAS Funds - 28
<PAGE>



- ---------------------MAS--------------------------------------------------------
                  ---------     
                  MAS FUNDS     
                  
                  -------------------------------------
                          ADVISER CLASS PROSPECTUS
                  -------------------------------------





                  MILLER
                  ANDERSON
                  & SHERRERD, LLP
__________________ONE TOWER BRIDGE o WEST CONSHOHOCKEN, PA 19428 o 800-354-8185_
                                                                                



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