WITTER DEAN UTILITIES FUND
485BPOS, 1997-03-24
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<PAGE>
   
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 24, 1997
    
 
                                                            FILE NOS.:  33-18983
                                                                        811-5415
 
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- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                ----------------
 
                                   FORM N-1A
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933          /X/
 
   
                        POST-EFFECTIVE AMENDMENT NO. 10                      /X/
    
                                     AND/OR
              REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
                                  ACT OF 1940                                /X/
   
                                AMENDMENT NO. 12                             /X/
    
                               ------------------
 
                           DEAN WITTER UTILITIES FUND
 
                        (A MASSACHUSETTS BUSINESS TRUST)
 
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)
 
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
 
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)
       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (212) 392-1600
 
   
                                BARRY FINK, ESQ.
    
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
 
                    (NAME AND ADDRESS OF AGENT FOR SERVICE)
 
                            ------------------------
 
                                    COPY TO:
                            DAVID M. BUTOWSKY, ESQ.
                             GORDON ALTMAN BUTOWSKY
                             WEITZEN SHALOV & WEIN
                              114 WEST 47TH STREET
                            NEW YORK, NEW YORK 10036
                                ----------------
 
                 APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
 
  As soon as practicable after this Post-Effective Amendment becomes effective
 
 IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE BOX)
        ___ immediately upon filing pursuant to paragraph (b)
   
        _X_ on March 26, 1997 pursuant to paragraph (b)
    
        ___ 60 days after filing pursuant to paragraph (a)
        ___ on (date) pursuant to paragraph (a) of rule 485.
 
   
    THE REGISTRANT HAS REGISTERED AN INDEFINITE NUMBER OF ITS SHARES UNDER THE
SECURITIES ACT OF 1933 PURSUANT TO SECTION (A)(1) OF RULE 24F-2 OF THE
INVESTMENT COMPANY ACT OF 1940. PURSUANT TO SECTION (B)(2) OF RULE 24F-2, THE
REGISTRANT FILED A RULE 24F-2 NOTICE FOR ITS FISCAL YEAR ENDED DECEMBER 31, 1996
WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 7, 1997.
    
 
           AMENDING THE PROSPECTUS AND UPDATING FINANCIAL STATEMENTS
 
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<PAGE>
                           DEAN WITTER UTILITIES FUND
 
                             CROSS-REFERENCE SHEET
 
                                   FORM N-1A
 
<TABLE>
<CAPTION>
ITEM                                                                             CAPTION
- -----------------------------------------------  -----------------------------------------------------------------------
<S>                                              <C>
PART A                                                                         PROSPECTUS
 1.  ..........................................  Cover Page
 2.  ..........................................  Summary of Fund Expenses; Prospectus Summary
 3.  ..........................................  Financial Highlights; Performance Information
 4.  ..........................................  Investment Objective and Policies; The Fund and its Management, Cover
                                                  Page; Investment Restrictions; Prospectus Summary; Financial
                                                  Highlights
 5.  ..........................................  The Fund and Its Management; Back Cover; Investment Objective and
                                                  Policies
 6.  ..........................................  Dividends, Distributions and Taxes; Additional Information
 7.  ..........................................  Purchase of Fund Shares; Shareholder Services; Prospectus Summary
 8.  ..........................................  Redemptions and Repurchases; Shareholder Services
 9.  ..........................................  Not Applicable
 
PART B                                                             STATEMENT OF ADDITIONAL INFORMATION
10.  ..........................................  Cover Page
11.  ..........................................  Table of Contents
12.  ..........................................  The Fund and Its Management
13.  ..........................................  Investment Practices and Policies; Investment Restrictions; Portfolio
                                                  Transactions and Brokerage
14.  ..........................................  The Fund and Its Management; Trustees and Officers
15.  ..........................................  The Fund and Its Management; Trustees and Officers
16.  ..........................................  The Fund and Its Management; The Distributor; Shareholder Services;
                                                  Custodian and Transfer Agent; Independent Accountants
17.  ..........................................  Portfolio Transactions and Brokerage
18.  ..........................................  Description of Shares
19.  ..........................................  The Distributor; Redemptions and Repurchases; Financial Statements;
                                                  Determination of Net Asset Value; Shareholder Services
20.  ..........................................  Dividends, Distributions and Taxes
21.  ..........................................  The Distributor
22.  ..........................................  Performance Information
23.  ..........................................  Experts; Financial Statements
</TABLE>
 
PART C
 
    Information required to be included in Part C is set forth under the
appropriate item, so numbered, in Part C of this Registration Statement.
<PAGE>
              PROSPECTUS
   
              MARCH 26, 1997
    
 
               Dean Witter Utilities Fund (the "Fund") is an open-end,
diversified management investment company, whose investment objective is to
provide current income and long-term growth of income and capital. The Fund
seeks to achieve its investment objective by investing in equity and
fixed-income securities of companies engaged in the public utilities industry.
See "Investment Objective and Policies."
 
               Shares of the Fund are continuously offered at net asset value.
However, redemptions and/or repurchases are subject in most cases to a
contingent deferred sales charge, scaled down from 5% to 1% of the amount
redeemed, if made within six years of purchase, which charge will be paid to the
Fund's Distributor, Dean Witter Distributors Inc. (See "Redemptions and
Repurchases--Contingent Deferred Sales Charge.") In addition, the Fund pays the
Distributor a distribution fee pursuant to a Rule 12b-1 Plan of Distribution at
the annual rate of 1% of the lesser of the (i) average daily aggregate net sales
or (ii) average daily net assets of the Fund. (See "Purchase of Fund
Shares--Plan of Distribution.")
 
   
               This Prospectus sets forth concisely the information you should
know before investing in the Fund. It should be read and retained for future
reference. Additional information about the Fund is contained in the Statement
of Additional Information, dated March 26, 1997, which has been filed with the
Securities and Exchange Commission, and which is available at no charge upon
request of the Fund at the address or telephone numbers listed on this page. The
Statement of Additional Information is incorporated herein by reference.
    
 
     Dean Witter Distributors Inc.
      Distributor
 
TABLE OF CONTENTS
 
   
Prospectus Summary/2
Summary of Fund Expenses/3
Financial Highlights/4
The Fund and its Management/5
Investment Objective and Policies/5
  Risk Considerations/6
Investment Restrictions/9
Purchase of Fund Shares/10
Shareholder Services/12
Redemptions and Repurchases/15
Dividends, Distributions and Taxes/17
Performance Information/18
Additional Information/18
    
 
SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK, AND THE SHARES ARE NOT FEDERALLY INSURED BY THE FEDERAL DEPOSIT
INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD, OR ANY OTHER AGENCY.
 
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.
 
    Dean Witter
    Utilities Fund
    Two World Trade Center
    New York, New York 10048
    (212) 392-2550 or
    (800) 869-NEWS (toll-free)
<PAGE>
PROSPECTUS SUMMARY
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<TABLE>
<S>                 <C>
The                 The Fund is organized as a Trust, commonly known as a Massachusetts business trust, and is an open-end,
Fund                diversified management investment company. The Fund invests in equity and fixed-income securities of companies
                    engaged in the public utilities industry.
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Shares              Shares of beneficial interest with $0.01 par value (see page 18).
Offered
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Offering            At net asset value without sales charge (see page 10). Shares redeemed within six years of purchase are subject
Price               to a contingent deferred sales charge under most circumstances (see page 15).
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Minimum             The minimum initial investment is $1,000 ($100 if the account is opened through EasyInvest SM) the minimum
Purchase            subsequent investment is $100 (see page 10).
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Investment          The investment objective of the Fund is to provide current income and long-term growth of income and capital
Objective           (see page 5).
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Investment          Dean Witter InterCapital Inc., the Investment Manager of the Fund, and its wholly-owned subsidiary, Dean Witter
Manager             Services Company Inc., serve in various investment management, advisory, management and administrative
                    capacities to 102 investment companies and other portfolios with assets of approximately $93 billion at February
                    28, 1997.
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Management          The Investment Manager receives a monthly fee at the annual rate of 0.65% of daily net assets up to $500
Fee                 million, scaled down at various asset levels to 0.425% of the Fund's daily net assets on assets exceeding $5
                    billion (see page 5).
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Dividends           Dividends from net investment income are declared and paid quarterly. Distributions from net short-term and
                    long-term capital gains are paid at least annually. Dividends and capital gains distributions are automatically
                    reinvested in additional shares at net asset value unless the shareholder elects to receive cash (see page 17).
- ------------------------------------------------------------------------------------------------------------------------------------
Distributor         Dean Witter Distributors Inc. (the "Distributor"). For its services as Distributor, which include payment of
and                 sales commissions to account executives and various other promotional and sales related expenses, the
Distribution        Distributor receives from the Fund a distribution fee accrued daily and payable monthly at the rate of 1% per
Fee                 annum of the lesser of (i) the Fund's average daily aggregate net sales or (ii) the Fund's average daily net
                    assets. This fee compensates the Distributor for services provided in distributing shares of the Fund and for
                    sales related expenses. The Distributor also receives the proceeds of any contingent deferred sales charges (see
                    pages 15-17).
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Redemption-         At net asset value; redeemable involuntarily if total value of the account is less than $100 or, if the account
Contingent          was opened through EasyInvest, if after twelve months the shareholder has invested less than $1,000 in the
Deferred            account. Although no commission or sales load is imposed upon the purchase of shares, a contingent deferred
Sales               sales charge (scaled down from 5% to 1%) is imposed on any redemption of shares if after such redemption the
Charge              aggregate current value of an account with the Fund falls below the aggregate amount of the investor's purchase
                    payments made during the six years preceding the redemption. However, there is no charge imposed on redemption
                    of shares purchased through reinvestment of dividends or distributions (see pages 15-17).
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Special             The net asset value of the Fund's shares will fluctuate with changes in the market value of its portfolio
Risk                securities. The public utilities industry has certain characteristics and risks, and developments within that
Considerations      industry will affect the Fund's portfolio (see page 8). The Fund may invest up to 20% of its assets in foreign
                    securities which entail additional risks (see pages 6-8). The value of public utility debt securities (and, to a
                    lesser extent, equity securities) tends to have an inverse relationship to the movement of interest rates.
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>
    
 
  THE ABOVE IS QUALIFIED IN ITS ENTIRETY BY THE DETAILED INFORMATION APPEARING
  ELSEWHERE IN THIS PROSPECTUS AND IN THE STATEMENT OF ADDITIONAL INFORMATION.
 
                                       2
<PAGE>
SUMMARY OF FUND EXPENSES
- --------------------------------------------------------------------------------
 
   
    The following table illustrates all expenses and fees that a shareholder of
the Fund will incur. The expenses and fees set forth in the table are for the
fiscal year ended December 31, 1996.
    
 
<TABLE>
<S>                                                                                      <C>
SHAREHOLDER TRANSACTION EXPENSES
- ---------------------------------------------------------------------------------------
Maximum Sales Charge Imposed on Purchases..............................................  None
Maximum Sales Charge Imposed on Reinvested Dividends...................................  None
Deferred Sales Charge
  (as a percentage of the lesser of original purchase price or redemption proceeds)....  5.0%
      A deferred sales charge is imposed at the following declining rates:
</TABLE>
 
<TABLE>
<CAPTION>
Year Since Purchase                                                                           Percentage of
Payment Made                                                                                 Amount Redeemed
- -------------------------------------------------------------------------------------------  ----------------
<S>                                                                                          <C>
First......................................................................................          5.0%
Second.....................................................................................          4.0%
Third......................................................................................          3.0%
Fourth.....................................................................................          2.0%
Fifth......................................................................................          2.0%
Sixth......................................................................................          1.0%
Seventh and thereafter.....................................................................        None
</TABLE>
 
   
<TABLE>
<S>                                                                                     <C>
Redemption Fee........................................................................    None
Exchange Fee..........................................................................    None
ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET ASSETS)
- --------------------------------------------------------------------------------------
Management Fee........................................................................      0.53%
12b-1 Fees*:..........................................................................      1.00%
Other Expenses........................................................................      0.11%
Total Fund Operating Expenses.........................................................      1.64%
<FN>
- ------------
* A PORTION OF THE 12B-1 FEE EQUAL TO 0.25% OF THE FUND'S AVERAGE DAILY NET
  ASSETS IS CHARACTERIZED AS A SERVICE FEE WITHIN THE MEANING OF NATIONAL
  ASSOCIATION OF SECURITIES DEALERS, INC. ("NASD") GUIDELINES (SEE "PURCHASE OF
  FUND SHARES").
</TABLE>
    
 
   
<TABLE>
<CAPTION>
EXAMPLE                                                                  1 Year       3 Years      5 Years     10 Years
- ---------------------------------------------------------------------  -----------  -----------  -----------  -----------
<S>                                                                    <C>          <C>          <C>          <C>
You would pay the following expenses on a $1,000 investment, assuming
 (1) 5% annual return and (2) redemption at the end of each time
 period..............................................................   $      67    $      82    $     109    $     194
You would pay the following expenses on the same investment, assuming
 no redemption.......................................................   $      17    $      52    $      89    $     194
</TABLE>
    
 
    The above example should not be considered a representation of past or
future expenses or performance. Actual expenses of the Fund may be greater or
less than those shown.
 
    The purpose of this table is to assist the investor in understanding the
various costs and expenses that an investor in the Fund will bear directly or
indirectly. For a more complete description of these costs and expenses, see
"The Fund and its Management," "Plan of Distribution" and "Redemptions and
Repurchases."
 
    Long-term shareholders of the Fund may pay more in sales charges and
distribution fees than the economic equivalent of the maximum front-end sales
charges permitted by the NASD.
 
                                       3
<PAGE>
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
 
   
    The following per share data and ratios for a share of beneficial interest
outstanding throughout each period have been audited by Price Waterhouse LLP,
independent accountants. The financial highlights should be read in conjunction
with the financial statements, and notes thereto and the unqualified report of
the independent accountants which are contained in the Statement of Additional
Information. Further information about the performance of the Fund is contained
in the Fund's Annual Report to Shareholders, which may be obtained without
charge upon request to the Fund.
    
 
   
<TABLE>
<CAPTION>
                                                                                                                For the Period
                                                For the Year Ended December 31                                  April 29, 1988*
                   ----------------------------------------------------------------------------------------         Through
                      1996        1995       1994       1993       1992       1991       1990       1989       December 31, 1988
<S>                <C>          <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
- ----------------------------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING
 PERFORMANCE:
Net asset value,
 beginning of
 period..........   $   15.15   $   12.30  $   14.34  $   13.37  $   12.93  $   11.48  $   12.22  $   10.41        $   10.00
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------          -------
Net investment
 income..........        0.56        0.58       0.63       0.61       0.63       0.65       0.65       0.63             0.40
Net realized and
 unrealized gain
 (loss)..........        0.16        2.85      (2.04)      1.09       0.47       1.45      (0.71)      1.86             0.38
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------          -------
Total from
 investment
 operations......        0.72        3.43      (1.41)      1.70       1.10       2.10      (0.06)      2.49             0.78
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------          -------
Less dividends
 and
 distributions
 from:
  Net investment
   income........       (0.58)      (0.58)     (0.61)     (0.61)     (0.63)     (0.65)     (0.65)     (0.67)           (0.36)
  Net realized
   gain..........       (0.07)     --          (0.02)     (0.12)     (0.03)    --          (0.03)     (0.01)           (0.01)
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------          -------
Total dividends
 and
 distributions...       (0.65)      (0.58)     (0.63)     (0.73)     (0.66)     (0.65)     (0.68)     (0.68)           (0.37)
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------          -------
Net asset value,
 end of period...   $   15.22   $   15.15  $   12.30  $   14.34  $   13.37  $   12.93  $   11.48  $   12.22        $   10.41
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------          -------
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------          -------
TOTAL INVESTMENT
 RETURN+.........        4.99%      28.42%     (9.90)%     12.79%      8.75%     18.89%     (0.27)%     24.51%            7.90%(1)
RATIOS TO AVERAGE
 NET ASSETS:
Expenses.........        1.64%       1.65%      1.64%      1.46%      1.59%      1.59%      1.67%      1.68%            1.84%(2)
Net investment
 income..........        3.63%       4.19%      4.67%      4.32%      5.05%      5.58%      5.85%      6.07%            6.69%(2)
SUPPLEMENTAL
 DATA:
Net assets, end
 of period, in
 millions........   $   2,677   $   3,321  $   2,827  $   3,881  $   2,926  $   1,959  $   1,369  $   1,131        $     458
Portfolio
 turnover rate...           7%          9%        11%        16%        14%        13%        13%        25%              12%(1)
Average
 commission rate
 paid............      $0.0547     --         --         --         --         --         --         --               --
</TABLE>
    
 
- ---------------
   
 * Commencement of operations.
    
   
 +Does not reflect the deduction of sales charge. Calculated based on the net
  asset value as of the last business day of the period.
    
   
(1) Not annualized.
    
   
(2) Annualized.
    
 
                                       4
<PAGE>
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
    Dean Witter Utilities Fund (the "Fund") is an open-end, diversified
management investment company. The Fund is a trust of the type commonly known as
a "Massachusetts business trust" and was organized under the laws of
Massachusetts on December 8, 1987.
 
    Dean Witter InterCapital Inc. ("InterCapital" or the "Investment Manager"),
whose address is Two World Trade Center, New York, New York 10048, is the Fund's
Investment Manager. The Investment Manager, which was incorporated in July,
1992, is a wholly-owned subsidiary of Dean Witter Discover & Co. ("DWDC"), a
balanced financial services organization providing a broad range of nationally
marketed credit and investment products.
 
   
    InterCapital and its wholly-owned subsidiary, Dean Witter Services Company
Inc., serve in various investment management, advisory, management and
administrative capacities to 102 investment companies, 30 of which are listed on
the New York Stock Exchange, with combined total assets of approximately $89.8
billion at February 28, 1997. The Investment Manager also manages and advises
portfolios of pension plans, other institutions and individuals which aggregated
approximately $3.2 billion at such date.
    
 
   
    On February 5, 1997, DWDC and Morgan Stanley Group Inc. announced that they
had entered into an Agreement and Plan of Merger, with the combined company to
be named Morgan Stanley, Dean Witter, Discover & Co. The business of Morgan
Stanley Group Inc. and its affiliated companies is providing a wide range of
financial services for sovereign governments, corporations, institutions and
individuals throughout the world. DWDC is the direct parent of InterCapital and
Dean Witter Distributors Inc., the Fund's distributor. It is currently
anticipated that the transaction will close in mid-1997. Thereafter,
InterCapital and Dean Witter Distributors Inc. will be direct subsidiaries of
Morgan Stanley, Dean Witter, Discover & Co.
    
 
    The Fund has retained the Investment Manager to provide administrative
services, manage its business affairs and manage the investment of the Fund's
assets. InterCapital has retained Dean Witter Services Company Inc. to perform
the aforementioned administrative services for the Fund.
 
    The Fund's Trustees review the various services provided by or under the
direction of the Investment Manager to ensure that the Fund's general investment
policies and programs are being properly carried out and that administrative
services are being provided to the Fund in a satisfactory manner.
 
   
    As full compensation for the services and facilities furnished to the Fund
and for expenses of the Fund assumed by the Investment Manager, the Fund pays
the Investment Manager monthly compensation calculated daily by applying the
following annual rates to the net assets of the Fund as of the close of each
business day: 0.65% of the portion of the daily net assets not exceeding $500
million, scaled down at various asset levels to 0.425% of the portion of daily
net assets exceeding $5 billion. For the fiscal year ended December 31, 1996,
the Fund accrued total compensation to the Investment Manager amounting to 0.53%
of the Fund's average daily net assets and the Fund's total expenses amounted to
1.64% of the Fund's average daily net assets.
    
 
INVESTMENT OBJECTIVE AND POLICIES
- --------------------------------------------------------------------------------
 
    The investment objective of the Fund is to provide current income and
long-term growth of income and capital. This objective is fundamental and may
not be changed without shareholder approval. There can be no assurance that the
investment objective will be achieved. The Fund seeks to achieve its investment
objective by investing primarily in equity and fixed-income securities of
 
                                       5
<PAGE>
companies engaged in the public utilities industry. The term "public utilities
industry" consists of companies engaged in the manufacture, production,
generation, transmission, sale and distribution of gas and electric energy, as
well as companies engaged in the communications field, including telephone,
telegraph, satellite, microwave and other companies providing communication
facilities for the public, but excluding public broadcasting companies.
 
    The Fund invests in both equity securities (common stocks and securities
convertible into common stock) and fixed income securities (bonds and preferred
stock) in the public utilities industry. The Fund does not have any set policies
to concentrate within any particular segment of the utilities industry.
 
    Fixed-income securities in which the Fund may invest are debt securities and
preferred stocks, which are rated at the time of purchase Baa or better by
Moody's Investors Service, Inc. ("Moody's") or BBB or better by Standard &
Poor's Corporation ("S&P"), or which, if unrated, are deemed to be of comparable
quality by the Fund's Trustees. The Fund may also purchase equity and
fixed-income securities issued by foreign issuers.
 
    Investments in fixed-income securities rated either BBB by S&P or Baa by
Moody's (the lowest credit ratings designated "investment grade") may have
speculative characteristics and, therefore, changes in economic conditions or
other circumstances are more likely to weaken their capacity to make principal
and interest payments than would be the case with investments in securities with
higher credit ratings. If a fixed-income security held by the Fund is rated BBB
or Baa and is subsequently downgraded by a rating agency, the Fund will retain
such security in its portfolio until the Investment Manager determines that it
is practicable to sell the security without undue market or tax consequences to
the Fund. In the event that such downgraded securities constitute 5% or more of
the Fund's total assets, the Investment Manager will sell immediately securities
sufficient to reduce the total to below 5%.
 
    While the Fund will invest primarily in the securities of public utility
companies, under ordinary circumstances it may invest up to 35% of its total
assets in U.S. Government securities (securities issued or guaranteed as to
principal and interest by the United States or its agencies and
instrumentalities), money market instruments and repurchase agreements, as
described below. U.S. Government securities in which the Fund may invest include
zero coupon securities.
 
    There may be periods during which, in the opinion of the Investment Manager,
market conditions warrant reduction of some or all of the Fund's securities
holdings. During such periods, the Fund may adopt a temporary "defensive"
posture in which greater than 35% of its net assets are invested in cash or
money market instruments.
 
Risk Considerations
 
    REPURCHASE AGREEMENTS.  The Fund may enter into repurchase agreements, which
may be viewed as a type of secured lending by the Fund, and which typically
involve the acquisition by the Fund of debt securities from a selling financial
institution such as a bank, savings and loan association or broker-dealer. The
agreement provides that the Fund will sell back to the institution, and that the
institution will repurchase the underlying security at a specified price and at
a fixed time in the future, usually not more than seven days from the date of
purchase. While repurchase agreements involve certain risks not associated with
direct investments in debt securities, the Fund follows procedures designed to
minimize those risks. These procedures include effecting repurchase transactions
only with large, well-capitalized and well-established financial institutions
whose financial condition will be continually monitored by the Investment
Manager subject to procedures established by the Board of Trustees of the Fund.
 
                                       6
<PAGE>
    PRIVATE PLACEMENTS.  The Fund may invest up to 5% of its total assets in
securities which are subject to restrictions on resale because they have not
been registered under the Securities Act of 1933, as amended (the "Securities
Act"), or which are otherwise not readily marketable. (Securities eligible for
resale pursuant to Rule 144A under the Securities Act, and determined to be
liquid pursuant to the procedures discussed in the following paragraph, are not
subject to the foregoing restriction). These securities are generally referred
to as private placements or restricted securities. Limitations on the resale of
such securities may have an adverse effect on their marketability, and may
prevent the Fund from disposing of them promptly at reasonable prices. The Fund
may have to bear the expense of registering such securities for resale and the
risk of substantial delays in effecting such registration.
 
   
    The Securities and Exchange Commission has adopted Rule 144A under the
Securities Act, which permits the Fund to sell restricted securities to
qualified institutional buyers without limitation. The Investment Manager,
pursuant to procedures adopted by the Trustees of the Fund, will make a
determination as to the liquidity of each restricted security purchased by the
Fund. If a restricted security is determined to be "liquid," such security will
not be included within the category "illiquid securities," which under current
policy may not exceed 10% of the Fund's net assets. However, investing in Rule
144A securities could have the effect of increasing the level of Fund
illiquidity to the extent the Fund, at a particular point in time, may be unable
to find qualified institutional buyers interested in purchasing securities.
    
 
    ZERO COUPON SECURITIES.  A portion of the fixed-income securities purchased
by the Fund may be zero coupon securities. Such securities are purchased at a
discount from their face amount, giving the purchaser the right to receive their
full value at maturity. The interest earned on such securities is, implicitly,
automatically compounded and paid out at maturity. While such compounding at a
constant rate eliminates the risk of receiving lower yields upon reinvestment of
interest if prevailing interest rates decline, the owner of a zero coupon
security will be unable to participate in higher yields upon reinvestment of
interest received on interest-paying securities if prevailing interest rates
rise.
 
    A zero coupon security pays no interest to its holder during its life.
Therefore, to the extent the Fund invests in zero coupon securities, it will not
receive current cash available for distribution to shareholders. In addition,
zero coupon securities are subject to substantially greater price fluctuations
during periods of changing prevailing interest rates than are comparable
securities which pay interest on a current basis. Current federal tax law
requires that a holder (such as the Fund) of a zero coupon security accrue a
portion of the discount at which the security was purchased as income each year
even though the Fund receives no interest payments in cash on the security
during the year.
 
    WHEN-ISSUED AND DELAYED DELIVERY SECURITIES AND FORWARD COMMITMENTS.  From
time to time, in the ordinary course of business, the Fund may purchase
securities on a when-issued or delayed delivery basis or may purchase or sell
securities on a forward commitment basis. When such transactions are negotiated,
the price is fixed at the time of the commitment, but delivery and payment can
take place a month or more after the date of the commitment. There is no overall
limit on the percentage of the Fund's assets which may be committed to the
purchase of securities on a when-issued, delayed delivery or forward commitment
basis. An increase in the percentage of the Fund's assets committed to the
purchase of securities on a when-issued, delayed delivery or forward commitment
basis may increase the volatility of the Fund's net asset value.
 
    WHEN, AS AND IF ISSUED SECURITIES.  The Fund may purchase securities on a
"when, as and if issued" basis under which the issuance of the security depends
upon the occurrence of a subsequent event, such as approval of a merger,
corporate reorganization, leveraged buyout or debt restructuring. If the
anticipated event does not occur and the
securi-
 
                                       7
<PAGE>
ties are not issued, the Fund will have lost an investment opportunity. There is
no overall limit on the percentage of the Fund's assets which may be committed
to the purchase of securities on a "when, as and if issued" basis. An increase
in the percentage of the Fund's assets committed to the purchase of securities
on a "when, as and if issued" basis may increase the volatility of the Fund's
net asset value.
 
    FOREIGN SECURITIES.  The Fund may invest up to 20% of the value of its total
assets, at the time of purchase, in securities issued by foreign issuers, with a
maximum of 10% of the value of its total assets, at the time of purchase,
invested in such securities that are not American Depository Receipts (see
below). Foreign securities investments may be affected by changes in currency
rates or exchange control regulations, changes in governmental administration or
economic or monetary policy (in the United States and abroad) or changed
circumstances in dealings between nations. Fluctuations in the relative rates of
exchange between the currencies of different nations will affect the value of
the Fund's investments denominated in foreign currency. Changes in foreign
currency exchange rates relative to the U.S. dollar will affect the U.S. dollar
value of the Fund's assets denominated in that currency and thereby impact upon
the Fund's total return on such assets.
 
    Investments in foreign securities will also occasion risks relating to
political and economic developments abroad, including the possibility of
expropriations or confiscatory taxation, limitations on the use or transfer of
Fund assets and any effects of foreign social, economic or political
instability. Foreign companies are not subject to the regulatory requirements of
U.S. companies and, as such, there may be less publicly available information
about such companies. Moreover, foreign companies are not subject to uniform
accounting, auditing and financial reporting standards and requirements
comparable to those applicable to U.S. companies. Finally, in the event of a
default of any foreign debt obligations, it may be more difficult for the Fund
to obtain or enforce a judgment against the issuers of such securities.
 
    Securities of foreign issuers may be less liquid than comparable securities
of U.S. issuers and, as such, their price changes may be more volatile.
Furthermore, foreign exchanges and broker-dealers are generally subject to less
government and exchange scrutiny and regulation than their American
counterparts. Brokerage commissions, dealer concessions and other transaction
costs may be higher on foreign markets than in the U.S. In addition, differences
in clearance and settlement procedures on foreign markets may occasion delays in
settlements of the Fund's trades effected in such markets. As such, the
inability to dispose of portfolio securities due to settlement delays could
result in losses to the Fund due to subsequent declines in value of such
securities and the inability of the Fund to make intended security purchases due
to settlement problems could result in a failure of the Fund to make potentially
advantageous investments. Investments in certain issuers may be speculative due
to certain political risks and may be subject to substantial price fluctuations.
 
    AMERICAN DEPOSITORY RECEIPTS.  The Fund may invest in securities of foreign
issuers in the form of American Depository Receipts (ADRs), including ADRs
sponsored by persons other than the underlying issuers ("unsponsored ADRs").
ADRs are receipts typically issued by a United States bank or trust company
evidencing ownership of the underlying securities. Generally, ADRs, in
registered form, are designed for use in the United States securities markets.
Generally, issuers of the stock of unsponsored ADRs are not obligated to
distribute material information in the United States and, therefore, there may
not be a correlation between such information and the market value of such ADRs.
 
Public Utilities Industry
 
    The public utilities industry as a whole has certain characteristics and
risks particular to that industry. Unlike industrial companies, the rates which
utility companies may charge their customers generally are subject to review and
limitation by governmental regulatory commissions. Although rate changes of a
utility usually fluctuate in approximate correlation with financing costs, due
to political and regulatory
 
                                       8
<PAGE>
factors rate changes ordinarily occur only following a delay after the changes
in financing costs. This factor will tend to favorably affect a utility
company's earnings and dividends in times of decreasing costs, but conversely
will tend to adversely affect earnings and dividends when costs are rising. In
addition, the value of public utility debt securities (and, to a lesser extent,
equity securities) tends to have an inverse relationship to the movement of
interest rates.
 
    Among the risks affecting the utilities industry are the following: risks of
increases in fuel and other operating costs; the high cost of borrowing to
finance capital construction during inflationary periods; restrictions on
operations and increased costs and delays associated with compliance with
environmental and nuclear safety regulations; the difficulties involved in
obtaining natural gas for resale or fuel for generating electricity at
reasonable prices; the risks in connection with the construction and operation
of nuclear power plants; the effects of energy conservation and the effects of
regulatory changes, such as the possible adverse effects on profits of recent
increased competition among telecommunications companies and the uncertainties
resulting from such companies' diversification into new domestic and
international businesses, as well as agreements by many such companies linking
future rate increases to inflation or other factors not directly related to the
actual operating profits of the enterprise.
 
Portfolio Management
 
   
    The Fund's portfolio is actively managed by its Investment Manager with a
view to achieving the Fund's investment objective. In determining which
securities to purchase for the Fund or hold in the Fund's portfolio, the
Investment Manager will rely on information from various sources, including
research, analysis and appraisals of brokers and dealers, including Dean Witter
Reynolds Inc. ("DWR"), a broker-dealer affiliate of InterCapital, the views of
Trustees of the Fund and others regarding economic developments and interest
rate trends, and the Investment Manager's own analysis of factors it deems
relevant. The Fund's portfolio is managed within InterCapital's Growth and
Income Group, which manages 22 equity funds and fund portfolios with
approximately $24.4 billion in assets as of January 31, 1997. Edward F. Gaylor,
Senior Vice President of InterCapital and a member of InterCapital's Growth and
Income Group, has been the primary portfolio manager of the Fund since its
inception and has been a portfolio manager at InterCapital for over five years.
    
 
    Orders for transactions in portfolio securities and commodities are placed
for the Fund with a number of brokers and dealers, including DWR. Pursuant to an
order of the Securities and Exchange Commission, the Fund may effect principal
transactions in certain money market instruments with DWR. In addition, the Fund
may incur brokerage commissions on transactions conducted through DWR.
 
    Except as specifically noted, the Fund's investment policies and practices
discussed above are not fundamental policies of the Fund and, as such, may be
changed without shareholder approval.
 
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    The investment restrictions listed below are among the restrictions which
have been adopted by the Fund as fundamental policies. A fundamental policy may
not be changed without the vote of the Fund's shareholders.
    The Fund may not:
 
    1. Invest more than 5% of the value of its total
assets in the securities of any one issuer (other than obligations issued or
guaranteed by the United States Government, its agencies or instrumentalities).
 
    2. Purchase more than 10% of all outstanding
voting securities or any class of securities of any one issuer.
 
    3. Invest 25% or more of the value of its total
assets in securities of issuers in any one industry, except that the Fund will
concentrate in the public utilities industry. This restriction does not apply to
 
                                       9
<PAGE>
obligations issued or guaranteed by the United States Government or its agencies
or instrumentalities.
 
    4. Invest more than 10% of its total assets in
"illiquid securities" (securities for which market quotations are not readily
available) and repurchase agreements which have a maturity of longer than seven
days.
 
    5. Invest more than 5% of the value of its total
assets in securities of issuers having a record, together with predecessors, of
less than three years of continuous operation. This restriction shall not apply
to any obligation issued or guaranteed by the United States Government, its
agencies or instrumentalities.
 
PURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------
 
    The Fund offers its shares for sale to the public on a continuous basis.
Pursuant to a Distribution Agreement between the Fund and Dean Witter
Distributors Inc. (the "Distributor"), an affiliate of the Investment Manager,
shares of the Fund are distributed by the Distributor and offered by DWR and
other brokers and dealers who have entered into agreements with the Distributor
("Selected Broker-Dealers"). The principal executive office of the Distributor
is located at Two World Trade Center, New York, New York 10048.
 
    The minimum initial purchase is $1,000. Subsequent purchases of $100 or more
may be made by sending a check, payable to Dean Witter Utilities Fund, directly
to Dean Witter Trust Company (the "Transfer Agent") at P.O. Box 1040, Jersey
City, NJ 07303 or by contacting a DWR or other Selected Broker-Dealer account
executive. The minimum initial purchase, in the case of investments through
EasyInvest, an automatic purchase plan (see "Shareholder Services"), is $100,
provided that the schedule of automatic investments will result in investments
totalling at least $1,000 within the first twelve months. In the case of
investments pursuant to Systematic Payroll Deduction Plans (including Individual
Retirement Plans), the Fund, in its discretion, may accept investments without
regard to any minimum amounts which would otherwise be required if the Fund has
reason to believe that additional investments will increase the investment in
all accounts under such Plans to at least $1,000. Certificates for shares
purchased will not be issued unless a request is made by the shareholder in
writing to the Transfer Agent.
 
   
    Shares of the Fund are sold through the Distributor on a normal three
business day settlement basis; that is, payment is due on the third business day
(settlement date) after the order is placed with the Distributor. Shares of the
Fund purchased through the Distributor are entitled to any dividends declared
beginning on the next business day following settlement date. Since DWR and
other Selected Broker-Dealers forward investors' funds on settlement date, they
will benefit from the temporary use of the funds if payment is made prior
thereto. As noted above, orders placed directly with the Transfer Agent must be
accompanied by payment. Investors will be entitled to receive income dividends
and capital gains distributions if their order is received by the close of
business on the day prior to the record date for such dividends and
distributions.
    
 
    While no sales charge is imposed at the time shares are purchased, a
contingent deferred sales charge may be imposed at the time of redemption (see
"Redemptions and Repurchases"). Sales personnel are compensated for selling
shares of the Fund at the time of their sale by the Distributor and/ or other
Selected Broker-Dealer. In addition, some sales personnel of the Selected
Broker-Dealer will receive various types of non-cash compensation as special
sales incentives, including trips, educational and/or business seminars and
merchandise. The Fund and the Distributor reserve the right to reject any
purchase orders.
 
Plan of Distribution
 
    The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under the
Act (the "Plan"),
 
                                       10
<PAGE>
under which the Fund pays the Distributor a fee, which is accrued daily and
payable monthly, at an annual rate of 1% of the lesser of: (a) the average daily
aggregate gross sales of the Fund's shares since the inception of the Fund (not
including reinvestments of dividends or capital gains distributions), less the
average daily aggregate net asset value of the Fund's shares redeemed since the
Fund's inception upon which a contingent deferred sales charge has been imposed
or waived; or (b) the Fund's average daily net assets. This fee is treated by
the Fund as an expense in the year it is accrued. A portion of the fee payable
pursuant to the Plan, equal to 0.25% of the Fund's average daily net assets, is
characterized as a service fee within the meaning of NASD guidelines. The
service fee is a payment made for personal service and/or the maintenance of
shareholder accounts.
 
    Amounts paid under the Plan are paid to the Distributor to compensate it for
the services provided and the expenses borne by the Distributor and others in
the distribution of the Fund's shares, including the payment of commissions for
sales of the Fund's shares and incentive compensation to and expenses of DWR's
account executives and others who engage in or support distribution of shares or
who service shareholder accounts, including overhead and telephone expenses;
printing and distribution of prospectuses and reports used in connection with
the offering of the Fund's shares to other than current shareholders; and
preparation, printing and distribution of sales literature and advertising
materials. In addition, the Distributor may utilize fees paid pursuant to the
Plan to compensate DWR and other Selected Broker-Dealers for their opportunity
costs in advancing such amounts, which compensation would be in the form of a
carrying charge on any unreimbursed expenses incurred.
 
   
    For the fiscal year ended December 31, 1996, the Fund accrued payments under
the Plan amounting to $29,551,784, which amount is equal to 1.00% of the Fund's
average daily net assets for the fiscal year. The payments accrued under the
Plan were calculated pursuant to clause (b) of the compensation formula under
the Plan.
    
 
   
    At any given time, the Distributor may incur expenses in distributing shares
of the Fund which may be in excess of the total of (i) the payments made by the
Fund pursuant to the Plan, and (ii) the proceeds of contingent deferred sales
charges paid by investors upon the redemption of shares (see "Redemptions and
Repurchases--Contingent Deferred Sales Charge"). For example, if $1 million in
expenses in distributing shares of the Fund had been incurred and $750,000 had
been received as described in (i) and (ii) above, the excess expense would
amount to $250,000. The Distributor has advised the Fund that the excess
distribution expenses, including the carrying charge described above, totalled
$79,638,749 at December 31, 1996, which equalled 2.97% of the Fund's net assets
at such date.
    
 
    Because there is no requirement under the Plan that the Distributor be
reimbursed for all expenses or any requirement that the Plan be continued from
year to year, such excess amount, if any, does not constitute a liability of the
Fund. Although there is no legal obligation for the Fund to pay expenses
incurred in excess of payments made to the Distributor under the Plan and the
proceeds of contingent deferred sales charges paid by investors upon redemption
of shares, if for any reason the Plan is terminated, the Trustees will consider
at that time the manner in which to treat such expenses. Any cumulative expenses
incurred, but not yet recovered through distribution fees or contingent deferred
sales charges, may or may not be recovered through future distribution fees or
contingent deferred sales charges.
 
Determination of Net Asset Value
 
    The net asset value per share of the Fund is determined once daily at 4:00
p.m., New York time (or, on days when the New York Stock Exchange closes prior
to 4:00 p.m., at such earlier time), on each day that the New York Stock
Exchange is open by taking the value of all assets of the Fund,
sub-
 
                                       11
<PAGE>
tracting all its liabilities, dividing by the number of shares outstanding and
adjusting to the nearest cent. The net asset value per share will not be
determined on Good Friday and on such other federal and non-federal holidays as
are observed by the New York Stock Exchange.
 
   
    In the calculation of the Fund's net asset value: (1) an equity portfolio
security listed or traded on the New York or American Stock Exchange or other
domestic or foreign exchange is valued at its latest sale price on that exchange
prior to the time when assets are valued; if there were no sales that day, the
security is valued at the latest bid price (in cases where a security is traded
on more than one exchange, the security is valued on the exchange designated as
the primary market pursuant to procedures adopted by the Trustees); and (2) all
other portfolio securities for which over-the-counter market quotations are
readily available are valued at the latest bid price. When market quotations are
not readily available, including circumstances under which it is determined by
the Investment Manager that sale or bid prices are not reflective of a
security's market value, portfolio securities are valued at their fair value as
determined in good faith under procedures established by and under the general
supervision of the Board of Trustees.
    
 
    Short-term debt securities with remaining maturities of sixty days or less
at the time of purchase are valued at amortized cost, unless the Trustees
determine such does not reflect the securities' market value, in which case
these securities will be valued at their fair value as determined by the
Trustees.
 
   
    Certain securities in the Fund's portfolio may be valued by an outside
pricing service approved by the Fund's Trustees. The pricing service may utilize
a matrix system incorporating security quality, maturity and coupon as the
evaluation model parameters, and/or research evaluations by its staff, including
review of broker-dealer market price quotations, in determining what it believes
is the fair valuation of the portfolio securities valued by such pricing
service.
    
 
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
    AUTOMATIC INVESTMENT OF DIVIDENDS AND DISTRIBUTIONS.  All income dividends
and capital gains distributions are automatically paid in full and fractional
shares of the Fund (or, if specified by the shareholder, any other open-end
investment company for which InterCapital serves as investment manager
(collectively, with the Fund, the "Dean Witter Funds")), unless the shareholder
requests that they be paid in cash. Shares so acquired are not subject to the
imposition of a contingent deferred sales charge upon their redemption (see
"Redemptions and Repurchases").
 
    INVESTMENT OF DISTRIBUTIONS RECEIVED IN CASH. Any shareholder who receives a
cash payment representing a dividend or capital gains distribution may invest
such dividend or distribution at the net asset value per share next determined
after receipt by the Transfer Agent, by returning the check or the proceeds to
the Transfer Agent within thirty days after the payment date. Shares so acquired
are not subject to the imposition of a contingent deferred sales charge upon
their redemption (see "Redemptions and Repurchases").
 
    EASYINVEST SM.  Shareholders may subscribe to EasyInvest, an automatic
purchase plan which provides for any amount from $100 to $5,000 to be
transferred automatically from a checking or savings account, on a semi-monthly,
monthly or quarterly basis, to the Transfer Agent for investment in shares of
the Fund (see "Purchase of Fund Shares" and "Redemptions and
Repurchases--Involuntary Redemption").
 
    SYSTEMATIC WITHDRAWAL PLAN.  A systematic withdrawal plan (the "Withdrawal
Plan") is available for shareholders who own or purchase shares of the Fund
having a minimum value of $10,000 based
 
                                       12
<PAGE>
upon the then current net asset value. The Withdrawal Plan provides for monthly
or quarterly (March, June, September and December) checks in any amount, not
less than $25, or in any whole percentage of the account balance, on an
annualized basis. Any applicable contingent deferred sales charge will be
imposed on shares redeemed under the Withdrawal Plan (See "Redemptions and
Repurchases--Contingent Deferred Sales Charge"). Therefore, any shareholder
participating in the Withdrawal Plan will have sufficient shares redeemed from
his or her account so that the proceeds (net of any applicable contingent
deferred sales charge) to the shareholder will be the designated monthly or
quarterly amount.
 
    Shareholders should contact their DWR or other Selected Broker-Dealer
account executive or the Transfer Agent.
 
Exchange Privilege
 
    The Fund makes available to its shareholders an "Exchange Privilege"
allowing the exchange of shares of the Fund for shares of other Dean Witter
Funds sold with a contingent deferred sales charge ("CDSC funds"), and for
shares of Dean Witter Short-Term U.S. Treasury Trust, Dean Witter Limited Term
Municipal Trust, Dean Witter Short-Term Bond Fund, Dean Witter Balanced Growth
Fund, Dean Witter Balanced Income Fund, Dean Witter Intermediate Term U.S.
Treasury Trust and five Dean Witter Funds which are money market funds (the
foregoing eleven non-CDSC funds are hereinafter referred to as the "Exchange
Funds"). Exchanges may be made after the shares of the Fund acquired by purchase
(not by exchange or dividend reinvestment) have been held for thirty days. There
is no waiting period for exchanges of shares acquired by exchange or dividend
reinvestment.
 
    An exchange to another CDSC fund or any Exchange Fund that is not a money
market fund is on the basis of the next calculated net asset value per share of
each fund after the exchange order is received. When exchanging into a money
market fund from the Fund, shares of the Fund are redeemed out of the Fund at
their next calculated net asset value and the proceeds of the redemption are
used to purchase shares of the money market fund at their net asset value
determined the following business day. Subsequent exchanges between any of the
money market funds and any of the CDSC funds can be effected on the same basis.
No contingent deferred sales charge ("CDSC") is imposed at the time of any
exchange, although any applicable CDSC will be imposed upon ultimate redemption.
Shares of the Fund acquired in exchange for shares of another CDSC Fund having a
different CDSC schedule than that of this Fund will be subject to the CDSC
schedule of this Fund, even if such shares are subsequently re-exchanged for
shares of the CDSC fund originally purchased. During the period of time the
shareholder remains in the Exchange Fund (calculated from the last day of the
month in which the Exchange Fund shares were acquired), the holding period (for
the purpose of determining the rate of the CDSC) is frozen. If those shares are
subsequently reexchanged for shares of a CDSC fund, the holding period
previously frozen when the first exchange was made resumes on the last day of
the month in which shares of a CDSC fund are reacquired. Thus, the CDSC is based
upon the time (calculated as described above) the shareholder was invested in a
CDSC fund (see "Redemptions and Repurchases--Contingent Deferred Sales Charge").
However, in the case of shares of the Fund exchanged into an Exchange Fund, upon
a redemption of shares which results in a CDSC being imposed, a credit (not to
exceed the amount of the CDSC) will be given in an amount equal to the Exchange
Fund 12b-1 distribution fees, if any, incurred on or after the date which are
attributable to those shares. (Exchange Fund 12b-1 distribution fees, if any,
are described in the prospectuses for those funds.)
 
    In addition, shares of the Fund may be acquired in exchange for shares of
Dean Witter Funds sold with a front-end sales charge ("front-end sales charge
funds"), but shares of the Fund, however
 
                                       13
<PAGE>
acquired, may not be exchanged for shares of front-end sales charge funds.
Shares of a CDSC fund acquired in exchange for shares of a front-end sales
charge fund (or in exchange for shares of other Dean Witter Funds for which
shares of a front-end sales charge fund have been exchanged) are not subject to
any CDSC upon their redemption.
 
    Purchases and exchanges should be made for investment purposes only. A
pattern of frequent exchanges may be deemed by the Investment Manager to be
abusive and contrary to the best interests of the Fund's other shareholders and,
at the Investment Manager's discretion, may be limited by the Fund's refusal to
accept additional purchases and/ or exchanges from the investor. Although the
Fund does not have any specific definition of what constitutes a pattern of
frequent exchanges, and will consider all relevant factors in determining
whether a particular situation is abusive and contrary to the best interests of
the Fund and its other shareholders, investors should be aware that the Fund and
each of the other Dean Witter Funds may in their discretion limit or otherwise
restrict the number of times this Exchange Privilege may be exercised by any
investor. Any such restriction will be made by the Fund on a prospective basis
only, upon notice to the shareholder not later than ten days following such
shareholder's most recent exchange.
 
    The Exchange Privilege may be terminated or revised at any time by the Fund
and/or any of such Dean Witter Funds for which shares of the Fund have been
exchanged, upon such notice as may be required by applicable regulatory
agencies. Shareholders maintaining margin accounts with DWR or another Selected
Broker-Dealer are referred to their account executive regarding restrictions on
exchange of shares of the Fund pledged in the margin account.
 
    The current prospectus for each fund describes its investment objective(s)
and policies, and shareholders should obtain a copy and examine it carefully
before investing. Exchanges are subject to the minimum investment requirement
and any other conditions imposed by each fund. An exchange will be treated for
federal income tax purposes the same as a repurchase or redemption of shares, on
which the shareholder may realize a capital gain or loss. However, the ability
to deduct capital losses on an exchange may be limited in situations where there
is an exchange of shares within ninety days after the shares are purchased. The
Exchange Privilege is only available in states where an exchange may legally be
made.
 
    If DWR or another Selected Broker-Dealer is the current dealer of record and
its account numbers are part of the account information, shareholders may
initiate an exchange of shares of the Fund for shares of any of the Dean Witter
Funds (for which the Exchange Privilege is available) pursuant to this Exchange
Privilege by contacting their DWR or other Selected Broker-Dealer account
executive (no Exchange Privilege Authorization Form is required). Other
shareholders (and those shareholders who are clients of DWR or another Selected
Broker-Dealer but who wish to make exchanges directly by writing or telephoning
the Transfer Agent) must complete and forward to the Transfer Agent an Exchange
Privilege Authorization Form, copies of which may be obtained from the Transfer
Agent, to initiate an exchange. If the Authorization Form is used, exchanges may
be made in writing or by contacting the Transfer Agent at (800) 869-NEWS (toll-
free).
 
    The Fund will employ reasonable procedures to confirm that exchange
instructions communicated over the telephone are genuine. Such procedures may
include requiring various forms of personal identification such as name, mailing
address, social security or other tax identification number and DWR or other
Selected Broker-Dealer account number (if any). Telephone instructions may also
be recorded. If such procedures are not employed, the Fund may be liable for any
losses due to unauthorized or fraudulent instructions.
 
    Telephone exchange instructions will be accepted if received by the Transfer
Agent between
 
                                       14
<PAGE>
9:00 a.m. and 4:00 p.m., New York time, on any day the New York Stock Exchange
is open. Any shareholder wishing to make an exchange who has previously filed an
Exchange Privilege Authorization Form and who is unable to reach the Fund by
telephone should contact his or her DWR or other
Selected Broker-Dealer account executive, if appropriate, or make a written
exchange request. Shareholders are advised that during periods of drastic
economic or market changes, it is possible that the telephone exchange
procedures may be difficult to implement, although this has not been the case
with the Dean Witter Funds in the past.
 
    Shareholders should contact their DWR or other Selected Broker-Dealer
account executive or the Transfer Agent for further information about the
Exchange Privilege.
 
REDEMPTIONS AND REPURCHASES
- --------------------------------------------------------------------------------
 
    REDEMPTION.  Shares of the Fund can be redeemed for cash at any time at the
net asset value per share next determined; however, such redemption proceeds may
be reduced by the amount of any applicable contingent deferred sales charges
(see below). If shares are held in a shareholder's account without a share
certificate, a written request for redemption sent to the Fund's Transfer Agent
at P.O. Box 983, Jersey City, NJ 07303 is required. If certificates are held by
the shareholders, the shares may be redeemed by surrendering the certificates
with a written request for redemption, along with any additional documentation
required by the Transfer Agent.
 
    CONTINGENT DEFERRED SALES CHARGE.  Shares of the Fund which are held for six
years or more after purchase (calculated from the last day of the month in which
the shares were purchased) will not be subject to any charge upon redemption.
Shares redeemed sooner than six years after purchase may, however, be subject to
a charge upon redemption. This charge is called a "contingent deferred sales
charge" ("CDSC"), and it will be a percentage of the dollar amount of shares
redeemed and will be assessed on an amount equal to the lesser of the current
market value or the cost of the shares being redeemed. The size of this
percentage will depend upon how long the shares have been held, as set forth in
the table below:
 
<TABLE>
<CAPTION>
                                        Contingent Deferred
             Year Since                    Sales Charge
              Purchase                  as a Percentage of
            Payment Made                  Amount Redeemed
- ------------------------------------  -----------------------
<S>                                   <C>
First...............................              5.0%
Second..............................              4.0%
Third...............................              3.0%
Fourth..............................              2.0%
Fifth...............................              2.0%
Sixth...............................              1.0%
Seventh and thereafter..............           None
</TABLE>
 
    A CDSC will not be imposed on (i) any amount which represents an increase in
value of shares purchased within the six years preceding the redemption; (ii)
the current net asset value of shares purchased more than six years prior to the
redemption; and (iii) the current net asset value of shares purchased through
reinvestment of dividends or distributions and/or shares acquired in exchange
for shares of Dean Witter Funds sold with a front-end sales charge or of other
Dean Witter Funds acquired in exchange for such shares. Moreover, in determining
whether a CDSC is applicable it will be assumed that amounts described in (i),
(ii) and (iii) above (in that order) are redeemed first. In addition, no CDSC
will be imposed on redemptions of shares which were purchased by the employee
benefit plans established by DWR and SPS Transaction Services, Inc. (an
affiliate of DWR) for their employees as qualified under Section 401(k) of the
Internal Revenue Code.
 
                                       15
<PAGE>
    In addition, the CDSC, if otherwise applicable, will be waived in the case
of:
 
    (1) redemptions of shares held at the time a shareholder dies or becomes
disabled, only if the shares are: (a) registered either in the name of an
individual shareholder (not a trust), or in the names of such shareholder and
his or her spouse as joint tenants with right of survivorship; or (b) held in a
qualified corporate or self-employed retirement plan, Individual Retirement
Account ("IRA") or Custodial Account under Section 403(b)(7) of the Internal
Revenue Code, ("403(b) Custodial Account"), provided in either case that the
redemption is requested within one year of the death or initial determination of
disability;
 
    (2) redemptions in connection with the following retirement plan
distributions: (a) lump-sum or other distributions from a qualified corporate or
self-employed retirement plan following retirement (or in the case of a "key
employee" of a "top heavy" plan, following attainment of age 59 1/2); (b)
distributions from an IRA or 403(b) Custodial Account following attainment of
age 59 1/2; or (c) a tax-free return of an excess contribution to an IRA.
 
   
    (3) all redemptions of shares held for the benefit of a participant in a
corporate or self-employed retirement plan qualified under Section 401(k) of the
Internal Revenue Code which offers investment companies managed by the
Investment Manager or its subsidiary, Dean Witter Services Company Inc., as
seslf-directed investment alternatives and for which Dean Witter Trust Company
or Dean Witter Trust FSB, each of which is an affiliate of the Investment
Manager, serves as Trustee ("Eligible 401(k) Plan"), provided that either; (a)
the plan continues to be an Eligibile 401(k) Plan after the redemption; or (b)
the redemption is in connection with the complete termination of the plan
involving the distribution of all plan assets to participants.
    
 
    With reference to (1) above, for the purpose of determining disability, the
Distributor utilizes the definition of disability contained in Section 72(m)(7)
of the Internal Revenue Code, which relates to the inability to engage in
gainful employment. with reference to (2) above, the term "distribution" does
not encompass a direct transfer of IRA, 403(b) Custodial Account or retirement
plan assets to a successor custodian or trustee. All waivers will be granted
only following receipt by the Distributor of confirmation of the shareholder's
entitlement.
 
    REPURCHASE.  DWR and other Selected Broker-Dealers are authorized to
repurchase shares represented by a share certificate which is delivered to any
of their offices. Shares held in a shareholder's account without a share
certificate may also be repurchased by DWR and other Selected Broker-Dealers
upon the telephonic or telegraphic request of the shareholder. The repurchase
price is the net asset value next computed (see "Purchase of Fund Shares") after
such repurchase order is received by DWR or other Selected Broker-Dealers,
reduced by any applicable CDSC.
 
    The CDSC, if any, will be the only fee imposed by the Fund, the Distributor,
DWR or other Selected Broker-Dealers. The offers by DWR and other Selected
Broker-Dealers to repurchase shares may be suspended without notice by them at
any time. In that event, shareholders may redeem their shares through the Fund's
Transfer Agent as set forth above under "Redemption."
 
    PAYMENT FOR SHARES REDEEMED OR REPURCHASED. Payment for shares presented for
repurchase or redemption will be made by check within seven days after receipt
by the Transfer Agent of the certificate and/or written request in good order.
Such payment may be postponed or the right of redemption suspended under unusual
circumstances. If the shares to be redeemed have recently been purchased by
check, payment of the redemption proceeds may be delayed for the minimum time
needed to verify that the check used for investment has been honored (not more
than fifteen days from the time of receipt of the check by the Transfer Agent).
Shareholders maintaining margin accounts with DWR or another Selected
Broker-Dealer are referred to their account
 
                                       16
<PAGE>
executive regarding restrictions on redemption of shares of the Fund pledged in
the margin account.
 
    REINSTATEMENT PRIVILEGE.  A shareholder who has had his or her shares
redeemed or repurchased and has not previously exercised this reinstatement
privilege may, within thirty days after the date of the redemption or
repurchase, reinstate any portion or all of the proceeds of such redemption or
repurchase in shares of the Fund at net asset value next determined after a
reinstatement request, together with the proceeds, is received by the Transfer
Agent and receive a pro-rata credit for any CDSC paid in connection with such
redemption or repurchase.
 
    INVOLUNTARY REDEMPTION.  The Fund reserves the right, on sixty days' notice,
to redeem, at their net asset value, the shares of any shareholder (other than
shares held in an Individual Retirement Account or Custodial Account under
Section 403(b)(7) of the Internal Revenue Code) whose shares due to redemptions
by the shareholder have a value of less than $100 as a result of redemptions or
repurchases or such lesser amount as may be fixed by the Trustees or, in the
case of an account opened through EasyInvest, if after twelve months the
shareholder has invested less than $1,000 in the account. However, before the
Fund redeems such shares and sends the proceeds to the shareholder, it will
notify the shareholder that the value of the shares is less than the applicable
amount and allow him or her sixty days to make an additional investment in an
amount which will increase the value of his or her account to at least the
applicable amount before the redemption is processed. No CDSC will be imposed on
any involuntary redemption.
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
    DIVIDENDS AND DISTRIBUTIONS.  The Fund intends to pay quarterly income
dividends and to distribute net short-term and net long-term capital gains, if
any, at least once each year. The Fund may, however, determine either to
distribute or to retain all or part of any long-term capital gains in any year
for reinvestment.
 
    All dividends and any capital gains distributions will be paid in additional
Fund shares and automatically credited to the shareholder's account without
issuance of a share certificate unless the shareholder requests in writing that
all dividends and/or distributions be paid in cash. (See "Shareholder
Services--Automatic Investment of Dividends and Distributions".)
 
    TAXES.  Because the Fund intends to distribute all of its net investment
income and capital gains to shareholders and otherwise remain qualified as a
regulated investment company under Subchapter M of the Internal Revenue Code, it
is not expected that the Fund will be required to pay any federal income tax.
Shareholders who are required to pay taxes on their income will normally have to
pay federal income taxes, and any state income taxes, on the dividends and
distributions they receive from the Fund. Such dividends and distributions, to
the extent that they are derived from net investment income or net short-term
capital gains, are taxable to the shareholder as ordinary income regardless of
whether the shareholder receives such payments in additional shares or in cash.
 
    After the end of the calendar year, shareholders will be sent full
information on their dividends and capital gains distributions for tax purposes,
including information as to the portion taxable as long-term capital gains and
the amount of dividends eligible for the Federal dividends received deduction
available to corporations. To avoid being subject to a 31% federal backup
withholding tax on taxable dividends, capital gains distributions and the
proceeds of redemptions and repurchases, shareholders' taxpayer identification
numbers must be furnished and certified as to their accuracy.
 
    Long-term and short-term capital gains may be generated by the sale of
portfolio securities by the Fund. Distributions of net long-term capital gains,
if
 
                                       17
<PAGE>
any, are taxable to shareholders as long-term capital gains regardless of how
long a shareholder has held the Fund's shares and regardless of whether the
distribution is received in additional shares or in cash. Capital gains
distributions are not eligible for the corporate dividends received deduction.
 
   
    The Fund may at times make payments from sources other than income or net
capital gains. Payments from such sources will, in effect, represent a return of
a portion of each shareholder's investment. All, or a portion, of such payments
will not be taxable to shareholders.
    
 
    Shareholders should consult their tax advisers as to the applicability of
the foregoing to their current situation.
 
PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------
 
    From time to time the Fund may quote its "yield" and/or its "total return"
in advertisements and sales literature. Both the yield and the total return of
the Fund are based on historical earnings and are not intended to indicate
future performance. The yield of the Fund is computed by dividing the Fund's net
investment income over a 30-day period by an average value (using the average
number of shares entitled to receive dividends and the net asset value per share
at the end of the period), all in accordance with applicable regulatory
requirements. Such amount is compounded for six months and then annualized for a
twelve-month period to derive the Fund's yield.
 
    The "average annual total return" of the Fund refers to a figure reflecting
the average annualized percentage increase (or decrease) in the value of an
initial investment in the Fund of $1,000 over periods of one and five years, as
well as over the life of the Fund. Average annual total return reflects all
income earned by the Fund, any appreciation or depreciation of the Fund's
assets, all expenses incurred by the Fund and all sales charges which would be
incurred by redeeming shareholders, for the period. It also assumes reinvestment
of all dividends and distributions paid by the Fund.
 
    In addition to the foregoing, the Fund may advertise its total return over
different periods of
time by means of aggregate, average, year-by-year or other types of total return
figures. The Fund may also advertise the growth of hypothetical investments of
$10,000, $50,000 and $100,000 in shares of the Fund. Such calculations may or
may not reflect the deduction of the contingent deferred sales charge which, if
reflected, would reduce the performance quoted. The Fund from time to time may
also advertise its performance relative to certain performance rankings and
indexes compiled by independent organizations (such as mutual fund performance
rankings of Lipper Analytical Services, Inc., the S&P 500 Stock Index and the
Dow Jones Industrial Average).
 
ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------
 
    VOTING RIGHTS.  All shares of beneficial interest of the Fund are of $0.01
par value and are equal as to earnings, assets and voting privileges.
 
    The Fund is not required to hold Annual Meetings of Shareholders for action
by shareholder vote as may be required by the Act or the Declaration of Trust.
Under ordinary circumstances, the Trustees may be removed by action of the
Trustees or by the shareholders.
 
    Under Massachusetts law, shareholders of a business trust may, under certain
limited circumstances, be held personally liable as partners for obligations of
the Fund. However, the Declaration of Trust contains an express disclaimer of
shareholder liability for acts or obligations of the Fund, requires that notice
of such Fund obligations include such disclaimer, and provides for
indemnification and reimbursement of expenses out of the Fund's property for any
shareholder held personally liable for
 
                                       18
<PAGE>
the obligations of the Fund. Thus, the risk of a shareholder incurring financial
loss on account of shareholder liability is limited to circumstances in which
the Fund itself would be unable to meet its obligations. Given the above
limitations on shareholder personal liability, and the nature of the Fund's
assets and operations, in the opinion of Massachusetts counsel to the Fund, the
risk to Fund shareholders of personal liability is remote.
 
    CODE OF ETHICS.  Directors, officers and employees of InterCapital, Dean
Witter Services Company Inc. and the Distributor are subject to a strict Code of
Ethics adopted by those companies. The Code of Ethics is intended to ensure that
the interests of shareholders and other clients are placed ahead of any personal
interest, that no undue personal benefit is obtained from a person's employment
activities and that actual and potential conflicts of interest are avoided. To
achieve these goals and comply with regulatory requirements, the Code of Ethics
requires, among other things, that personal securities transactions by employees
of the companies be subject to an advance clearance process to monitor that no
Dean Witter Fund is engaged at the same time in a purchase or sale of the same
security. The Code of Ethics bans the purchase of securities in an initial
public offering, and also prohibits engaging in futures and options transactions
and profiting on short-term trading (that is, a purchase within sixty days of a
sale or a sale within sixty days of a purchase) of a security. In addition,
investment personnel may not purchase or sell a security for their personal
account within thirty days before or after any transaction in any Dean Witter
Fund managed by them. Any violations of the Code of Ethics are subject to
sanctions, including reprimand, demotion or suspension or termination of
employment. The Code of Ethics comports with regulatory requirements and the
recommendations in the 1994 report by the Investment Company Institute Advisory
Group on Personal Investing.
 
    SHAREHOLDER INQUIRIES.  All inquiries regarding the Fund should be directed
to the Fund at the telephone numbers or address set forth on the front cover of
this Prospectus.
 
                                       19
<PAGE>
 
   
Dean Witter
Utilities Fund
Two World Trade Center
New York, New York 10048
 
Trustees                                          Dean Witter
Michael Bozic                                     Utilities Fund
Charles A. Fiumefreddo
Edwin J. Garn
John R. Haire
Dr. Manuel H. Johnson
Michael E. Nugent
Philip J. Purcell
John L. Schroeder
Officers
Charles A. Fiumefreddo
Chairman and Chief Executive Officer
Barry Fink
Vice President, Secretary and
General Counsel
Edward F. Gaylor
Vice President
Thomas F. Caloia
Treasurer
Custodian
The Bank of New York
90 Washington Street
New York, New York 10286
Transfer Agent and Dividend
Disbursing Agent
Dean Witter Trust Company
Harborside Financial Center
Plaza Two
Jersey City, New Jersey 07311
Independent Accountants
Price Waterhouse LLP
1177 Avenue of the Americas
New York, New York 10036
 
Investment Manager
Dean Witter InterCapital Inc.
 
                                                    PROSPECTUS -- MARCH 26, 1997
    
<PAGE>
                 (This page has been left blank intentionally.)
<PAGE>
   
STATEMENT OF ADDITIONAL INFORMATION
MARCH 26, 1997                                                       DEAN WITTER
                                                                  UTILITIES FUND
    
 
- ------------------------------------------------------------
 
    Dean Witter Utilities Fund (the "Fund") is an open-end, diversified
management investment company whose investment objective is to provide current
income and long-term growth of income and capital. The Fund seeks to attain its
investment objective by investing in equity and fixed-income securities of
companies in the public utilities industry.
 
   
    A Prospectus for the Fund dated March 26, 1997, which provides the basic
information you should know before investing in the Fund, may be obtained
without charge from the Fund at the address or telephone numbers listed below or
from the Fund's Distributor, Dean Witter Distributors Inc., or from Dean Witter
Reynolds Inc. at any of its branch offices. This Statement of Additional
Information is not a Prospectus. It contains information in addition to and more
detailed than that set forth in the Prospectus. It is intended to provide
additional information regarding the activities and operations of the Fund, and
should be read in conjunction with the Prospectus.
    
 
Dean Witter
Utilities Fund
Two World Trade Center
New York, New York 10048
(212) 392-2550
or (800) 869-NEWS
<PAGE>
TABLE OF CONTENTS
- --------------------------------------------------------------------------------
 
   
<TABLE>
<S>                                                                                      <C>
The Fund and its Management............................................................          3
 
Trustees and Officers..................................................................          6
 
Investment Practices and Policies......................................................         11
 
Investment Restrictions................................................................         26
 
Portfolio Transactions and Brokerage...................................................         27
 
The Distributor........................................................................         29
 
Determination of Net Asset Value.......................................................         32
 
Shareholder Services...................................................................         32
 
Redemptions and Repurchases............................................................         37
 
Dividends, Distributions and Taxes.....................................................         39
 
Performance Information................................................................         41
 
Description of Shares..................................................................         42
 
Custodian and Transfer Agent...........................................................         43
 
Independent Accountants................................................................         43
 
Reports to Shareholders................................................................         43
 
Legal Counsel..........................................................................         43
 
Experts................................................................................         43
 
Registration Statement.................................................................         43
 
Financial Statements--December 31, 1996................................................         44
 
Report of Independent Accountants......................................................         58
 
Appendix...............................................................................         59
</TABLE>
    
 
                                       2
<PAGE>
                          THE FUND AND ITS MANAGEMENT
 
THE FUND
 
    The Fund is a Trust of the type commonly known as a "Massachusetts business
trust" and was organized under the laws of the Commonwealth of Massachusetts on
December 8, 1987.
 
THE INVESTMENT MANAGER
 
   
    Dean Witter InterCapital Inc. (the "Investment Manager" or "InterCapital"),
a Delaware corporation, whose address is Two World Trade Center, New York, New
York 10048, is the Fund's Investment Manager. InterCapital is a wholly-owned
subsidiary of Dean Witter, Discover & Co. ("DWDC"), a Delaware corporation. In
an internal reorganization which took place in January, 1993, InterCapital
assumed the investment advisory, administrative and management activities
previously performed by the InterCapital Division of Dean Witter Reynolds Inc.
("DWR"), a broker-dealer affiliate of InterCapital. (As hereinafter used in this
Statement of Additional Information, the terms "InterCapital" and "Investment
Manager" refer to DWR's InterCapital Division prior to the internal
reorganization and to Dean Witter InterCapital Inc. thereafter.) The daily
management of the Fund is conducted by or under the direction of officers of the
Fund and of the Investment Manager, subject to review by the Fund's Board of
Trustees. Information as to these Trustees and officers is contained under the
caption "Trustees and Officers".
    
 
   
    The Investment Manager is also the investment manager or investment adviser
of the following investment companies: Dean Witter Liquid Asset Fund Inc.,
InterCapital Income Securities Inc., InterCapital Insured Municipal Bond Trust,
InterCapital Insured Municipal Trust, InterCapital Insured Municipal Income
Trust, InterCapital California Insured Municipal Income Trust, InterCapital
Insured Municipal Securities, InterCapital Insured California Municipal
Securities, InterCapital Quality Municipal Investment Trust, InterCapital
Quality Municipal Income Trust, InterCapital Quality Municipal Securities,
InterCapital California Quality Municipal Securities, InterCapital New York
Quality Municipal Securities, High Income Advantage Trust, High Income Advantage
Trust II, High Income Advantage Trust III, Dean Witter Government Income Trust,
Dean Witter High Yield Securities Inc., Dean Witter Tax-Free Daily Income Trust,
Dean Witter Developing Growth Securities Trust, Dean Witter Tax-Exempt
Securities Trust, Dean Witter Natural Resource Development Securities Inc., Dean
Witter Dividend Growth Securities Inc., Dean Witter American Value Fund, Dean
Witter U.S. Government Money Market Trust, Dean Witter Variable Investment
Series, Dean Witter World Wide Investment Trust, Dean Witter Select Municipal
Reinvestment Fund, Dean Witter California Tax-Free Income Fund, Dean Witter New
York Tax-Free Income Fund, Dean Witter Convertible Securities Trust, Dean Witter
Federal Securities Trust, Dean Witter Value-Added Market Series, Dean Witter
World Wide Income Trust, Dean Witter Intermediate Income Securities, Dean Witter
Utilities Fund, Dean Witter California Tax-Free Daily Income Trust, Dean Witter
Strategist Fund, Dean Witter Capital Growth Securities, Dean Witter New York
Municipal Money Market Trust, Dean Witter European Growth Fund Inc., Dean Witter
Precious Metals and Minerals Trust, Dean Witter Global Short-Term Income Fund
Inc., Dean Witter Pacific Growth Fund Inc., Dean Witter Multi-State Municipal
Series Trust, Dean Witter Premier Income Trust, Dean Witter Short-Term U.S.
Treasury Trust, Dean Witter Diversified Income Trust, Dean Witter Health
Sciences Trust, Dean Witter Retirement Series, Dean Witter Global Dividend
Growth Securities, Dean Witter Limited Term Municipal Trust, Dean Witter
Short-Term Bond Fund, Dean Witter Global Utilities Fund, Dean Witter National
Municipal Trust, Dean Witter High Income Securities, Dean Witter International
Small Cap Fund, Dean Witter Mid-Cap Growth Fund, Dean Witter Select Dimensions
Investment Series, Dean Witter Global Asset Allocation Fund, Dean Witter
Balanced Growth Fund, Dean Witter Balanced Income Fund, Dean Witter Hawaii
Municipal Trust, Dean Witter Capital Appreciation Fund, Dean Witter Information
Fund, Dean Witter Intermediate Term U.S. Treasury Trust, Dean Witter Japan Fund,
Dean Witter Income Builder Fund, Dean Witter Special Value Fund, Dean Witter
Financial Sevices Trust, Dean Witter Market Leader Trust, Active Assets Money
Trust, Active Assets Tax-Free Trust, Active Assets California Tax-Free Trust,
Active Assets Government Securities Trust, Municipal Income Trust, Municipal
Income Trust II, Municipal Income Trust III, Municipal Income Opportunities
Trust, Municipal Income Opportunities Trust II, Municipal Income Opportunities
Trust III, Prime Income Trust and Municipal Premium Income Trust. The foregoing
investment companies, together with the Fund, are collectively referred to as
the Dean Witter Funds.
    
 
                                       3
<PAGE>
   
    In addition, Dean Witter Services Company Inc. ("DWSC"), a wholly-owned
subsidiary of InterCapital, serves as manager for the following companies for
which TCW Funds Management, Inc. is the investment adviser: TCW/DW Core Equity
Trust, TCW/DW North American Government Income Trust, TCW/DW Latin American
Growth Fund, TCW/DW Income and Growth Fund, TCW/DW Small Cap Growth Fund, TCW/DW
Balanced Fund TCW/DW Total Return Trust, TCW/DW Mid-Cap Equity Trust, TCW/DW
Global Telecom Trust, TCW/DW Strategic Income Trust, TCW/DW Emerging Markets
Opportunities Trust, TCW/DW Term Trust 2000, TCW/DW Term Trust 2002 and TCW/DW
Term Trust 2003 (the "TCW/ DW Funds"). InterCapital also serves as: (i)
sub-adviser to Templeton Global Opportunities Trust, an open-end investment
company; (ii) administrator of The BlackRock Strategic Term Trust Inc., a
closed-end investment company; and (iii) sub-administrator of MassMutual
Participation Investors and Templeton Global Governments Income Trust,
closed-end investment companies.
    
 
    Pursuant to an Investment Management Agreement (the "Agreement") with the
Investment Manager, the Fund has retained the Investment Manager to manage the
investment of the Fund's assets, including the placing of orders for the
purchase and sale of portfolio securities. The Investment Manager obtains and
evaluates such information and advice relating to the economy, securities
markets and specific securities as it considers necessary or useful to
continuously manage the assets of the Fund in a manner consistent with its
investment objective.
 
    Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, such office space, facilities,
equipment, clerical help, bookkeeping and certain legal services as the Fund may
reasonably require in the conduct of its business, including the preparation of
prospectuses, statements of additional information, proxy statements and reports
required to be filed with federal and state securities commissions (except
insofar as the participation or assistance of independent accountants and
attorneys is, in the opinion of the Investment Manager, necessary or desirable).
In addition, the Investment Manager pays the salaries of all personnel,
including officers of the Fund, who are employees of the Investment Manager. The
Investment Manager also bears the cost of telephone service, heat, light, power
and other utilities provided to the Fund.
 
    Effective December 31, 1993, pursuant to a Services Agreement between
InterCapital and DWSC, DWSC began to provide the administrative services to the
Fund which were previously performed directly by InterCapital. On April 17,
1995, DWSC was reorganized in the State of Delaware, necessitating the entry
into a new Services Agreement by Intercapital and DWSC on that date. The
foregoing internal reorganizations did not result in any change in the nature or
scope of the administrative services being provided to the Fund or any of the
fees being paid by the Fund for the overall services being performed under the
terms of the existing Management Agreement.
 
    Expenses not expressly assumed by the Investment Manager under the Agreement
or by the Distributor of the Fund's shares, Dean Witter Distributors Inc.
("Distributors" or the "Distributor") (see "The Distributor"), will be paid by
the Fund. The expenses borne by the Fund include, but are not limited to:
expenses of the Plan of Distribution pursuant to Rule 12b-1 (see "The
Distributor"); charges and expenses of any registrar, custodian, stock transfer
and dividend disbursing agent; brokerage commissions; taxes; engraving and
printing of share certificates; registration costs of the Fund and its shares
under federal and state securities laws; the cost and expense of printing,
including typesetting, and distributing Prospectuses and Statements of
Additional Information of the Fund and supplements thereto to the Fund's
shareholders; all expenses of shareholders' and Trustees' meetings and of
preparing, printing and mailing of proxy statements and reports to shareholders;
fees and travel expenses of Trustees or members of any advisory board or
committee who are not employees of the Investment Manager or any corporate
affiliate of the Investment Manager; all expenses incident to any dividend,
withdrawal or redemption options; charges and expenses of any outside service
used for pricing of the Fund's shares; fees and expenses of legal counsel,
including counsel to the Trustees who are not interested persons of the Fund or
of the Investment Manager (not including compensation or expenses of attorneys
who are employees of the Investment Manager) and independent accountants;
membership dues of industry associations; interest on Fund borrowings; postage;
insurance premiums
 
                                       4
<PAGE>
on property or personnel (including officers and Trustees) of the Fund which
inure to its benefit; extraordinary expenses (including, but not limited to,
legal claims and liabilities and litigation costs and any indemnification
relating thereto); and all other costs of the Fund's operation.
 
   
    As full compensation for the services and facilities furnished to the Fund
and expenses of the Fund assumed by the Investment Manager, the Fund pays the
Investment Manager monthly compensation calculated daily by applying the
following annual rates to the net assets of the Fund as of the close of each
business day: 0.65% of the portion of the daily net assets not exceeding $500
million; 0.55% of the portion of the daily net assets exceeding $500 million but
not exceeding $1 billion; 0.525% of the portion of the daily net assets
exceeding $1 billion but not exceeding $1.5 billion; 0.50% of the portion of the
daily net assets exceeding $1.5 billion but not exceeding $2.5 billion; 0.475%
of the portion of daily net assets exceeding $2.5 billion but not exceeding $3.5
billion; and 0.45% of the portion of the daily net assets exceeding $3.5
billion. Total compensation accrued to the Investment Manager for the fiscal
years ended December 31, 1994, 1995 and 1996 amounted to $17,315,953,
$16,134,816 and $15,787,095, respectively.
    
 
    The Agreement provides that in the absence of willful misfeasance, bad
faith, gross negligence or reckless disregard of its obligations thereunder, the
Investment Manager is not liable to the Fund or any of its investors for any act
or omission by the Investment Manager or for any losses sustained by the Fund or
its investors. The Agreement in no way restricts the Investment Manager from
acting as investment manager or adviser to others.
 
    The Agreement was initially approved by the Trustees on October 30, 1992,
and by the shareholders at a Meeting of Shareholders on January 12, 1993. The
Agreement is substantially identical to a prior investment management agreement,
as amended, which was initially approved by the Trustees on January 14, 1988,
and by DWR, as the then sole shareholder, on June 28, 1989. At their meeting
held on April 28, 1993, the Trustees of the Fund, including all the Trustees of
the Fund who are not parties to the Agreement or "interested persons" (as
defined in the Investment Company Act of 1940, as amended (the "Act")) of any
such party (the "Independent Trustees"), approved an amendment to the Agreement
to lower the management fees charged on the Fund's net assets in excess of $3.5
billion. The Agreement took effect on June 30, 1993 upon the spin-off by Sears,
Roebuck and Co. of its remaining shares of DWDC. The Agreement may be terminated
at any time, without penalty, on thirty days' notice by the Trustees of the
Fund, by the holders of a majority as defined in the Act, of the outstanding
shares of the Fund, or by the Investment Manager. The Agreement will
automatically terminate in the event of its assignment (as defined in the Act).
 
   
    Under its terms, the Agreement had an initial term ending April 30, 1994,
and will remain in effect from year to year thereafter, provided continuance of
the Agreement is approved at least annually by the vote of the holders of a
majority, as defined in the Act, of the outstanding shares of the Fund, or by
the Trustees of the Fund; provided that in either event such continuance is
approved annually by the vote of a majority of the Independent Trustees, which
vote must be cast in person at a meeting called for the purpose of voting on
such approval. At their meeting held on April 17, 1996, the Fund's Trustees,
including all of the Independent Trustees, approved continuation of the
Agreement until April 30, 1997.
    
 
    The Fund has acknowledged that the name "Dean Witter" is a property right of
DWR. The Fund has agreed that DWR or its parent companies may use, or at any
time permit others to use, the name "Dean Witter". The Fund has also agreed that
in the event the investment management contract between InterCapital and the
Fund is terminated, or if the affiliation between InterCapital and its parent
company is terminated, the Fund will eliminate the name "Dean Witter" from its
name if DWR or its parent company shall so request.
 
                                       5
<PAGE>
TRUSTEES AND OFFICERS
- --------------------------------------------------------------------------------
 
   
    The Trustees and Executive Officers of the Fund, their principal business
occupations during the last five years and their affiliations, if any, with
InterCapital, and with the 84 Dean Witter Funds and the 14 TCW/DW Funds are
shown below.
    
 
   
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATION DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
Michael Bozic (56)                                      Chairman and Chief Executive Officer of Levitz Furniture
Trustee                                                 Corporation (since November, 1995); Director or Trustee of
c/o Levitz Furniture Corporation                        the Dean Witter Funds; formerly President and Chief
6111 Broken Sound Parkway, N.W.                         Executive Officer of Hills Department Stores (May,
Boca Raton, Florida                                     1991-July, 1995); formerly variously Chairman, Chief
                                                        Executive Officer, President and Chief Operating Officer
                                                        (1987-1991) of the Sears Merchandise Group of Sears,
                                                        Roebuck and Co.; Director of Eaglemark Financial Services,
                                                        Inc., the United Negro College Fund and Weirton Steel Cor-
                                                        poration.
Charles A. Fiumefreddo* (63)                            Chairman, Chief Executive Officer and Director of
Chairman, President, Chief                              InterCapital, Dean Witter Distributors Inc. ("Distribu-
 Executive Officer and Trustee                          tors") and Dean Witter Series Company Inc. ("DWSC");
Two World Trade Center                                  Executive Vice President and Director of DWR; Chairman,
New York, New York                                      Director or Trustee, President and Chief Executive Officer
                                                        of the Dean Witter Funds; Chairman, Chief Executive
                                                        Officer and Trustee of the TCW/DW Funds; Chairman and
                                                        Director of Dean Witter Trust Company ("DWTC"); Director
                                                        and/or officer of various DWDC subsidiaries; formerly
                                                        Executive Vice President and Director of DWDC (until Feb-
                                                        ruary, 1993).
Edwin J. Garn (64)                                      Director or Trustee of the Dean Witter Funds; formerly
Trustee                                                 United States Senator (R-Utah) (1974-1992) and Chairman,
c/o Huntsman Chemical Corporation                       Senate Banking Committee (1980-1986); formerly Mayor of
500 Huntsman Way                                        Salt Lake City, Utah (1972-1974); formerly Astronaut,
Salt Lake City, Utah                                    Space Shuttle Discovery (April 12-19, 1985); Vice
                                                        Chairman, Huntsman Chemical Corporation (since January,
                                                        1993); Director of Franklin Quest (time management
                                                        systems) and John Alden Financial Corp.; member of the
                                                        board of various civic and charitable organizations.
John R. Haire (72)                                      Chairman of the Audit Committee and Chairman of the
Trustee                                                 Committee of Independent Directors or Trustees and
Two World Trade Center                                  Director or Trustee of the Dean Witter Funds; Chairman of
New York, New York                                      the Audit Committee and Chairman of the Committee of the
                                                        Independent Trustees and Trustee of the TCW/DW Funds;
                                                        formerly President, Council for Aid to Education
                                                        (1978-1989) and Chairman and Chief Executive Officer of
                                                        Anchor Corporation, an Investment Adviser (1964-1978);
                                                        Director of Washington National Corporation (insurance).
</TABLE>
    
 
                                       6
<PAGE>
   
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATION DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
Dr. Manuel H. Johnson (48)                              Senior Partner, Johnson Smick International, Inc., a
Trustee                                                 consulting firm; Co-Chairman and a founder of the Group of
c/o Johnson Smick International Inc.                    Seven Council (G7C), an international economic commission;
1133 Connecticut Avenue, N.W.                           Director or Trustee of the Dean Witter Funds; Trustee of
Washington, D.C.                                        the TCW/DW Funds; Director of NASDAQ (since June, 1995);
                                                        Director of Greenwich Capital Markets Inc.
                                                        (broker-dealer); Trustee of the Financial Accounting
                                                        Foundation (oversight organization for the FSB); formerly
                                                        Vice Chairman of the Board of Governors of the Federal
                                                        Reserve System (1986-1990) and Assistant Secretary of the
                                                        U.S. Treasury (1982-1986).
Michael E. Nugent (60)                                  General Partner, Triumph Capital, L.P., a private in-
Trustee                                                 vestment partnership; Director or Trustee of the Dean
c/o Triumph Capital, L.P.                               Witter Funds; Trustee of the TCW/DW Funds; formerly Vice
237 Park Avenue                                         President, Bankers Trust Company and BT Capital
New York, New York                                      Corporation (1984-1988); Director of various business
                                                        organizations.
Philip J. Purcell* (53)                                 Chairman of the Board of Directors and Chief Executive
Trustee                                                 Officer of DWDC, DWR and Novus Credit Services Inc.;
Two World Trade Center                                  Director of InterCapital, DWSC and Distributors; Director
New York, New York                                      or Trustee of the Dean Witter Funds; Director and/or
                                                        officer of various DWDC subsidiaries.
John L. Schroeder (66)                                  Retired; Director or Trustee of the Dean Witter Funds;
Trustee                                                 Trustee of the TCW/DW Funds; Director of Citizens
c/o Gordon Altman Butowsky                              Utilities Company; formerly Executive Vice President and
 Weitzen Shalov & Wein                                  Chief Investment Officer of the Home Insurance Company
Counsel to the Independent Trustees                     (August, 1991-September, 1995) and formerly Chairman and
114 West 47th Street                                    Chief Investment Officer of Axe-Houghton Management and
New York, New York                                      the Axe-Houghton Funds (1983-1991).

Barry Fink (42)                                         Senior Vice President (since March, 1997) and Secretary
Vice President, Secretary                               and General Counsel (since February, 1997) of InterCapital
 and General Counsel                                    and DWSC; Senior Vice President (since March, 1997) and
Two World Trade Center                                  Assistant Secretary and Assistant General Counsel (since
New York, New York                                      February, 1997) of Distributors; Assistant Secretary of
                                                        DWR (since August, 1996); Vice President, Secretary and
                                                        General Counsel of Dean Witter Funds and the TCW/DW Funds
                                                        (since February, 1997); previously First Vice President
                                                        (June, 1993-February, 1997), Vice President (until June,
                                                        1993) and Assistant Secretary and Assistant General
                                                        Counsel of InterCapital and DWSC and Assistant Secretary
                                                        of the Dean Witter Funds and the TCW/DW Funds.
Edward F. Gaylor (55)                                   Senior Vice President of InterCapital and Vice President
Vice President                                          of various Dean Witter Funds.
Two World Trade Center
New York, New York
</TABLE>
    
 
                                       7
<PAGE>
   
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND AND ADDRESS                PRINCIPAL OCCUPATION DURING LAST FIVE YEARS
- ------------------------------------------------------  ----------------------------------------------------------
<S>                                                     <C>
Paula LaCosta (45)                                      Vice President of InterCapital and Vice President of
Vice President                                          various Dean Witter Funds.
Two World Trade Center
New York, New York

Thomas F. Caloia (51)                                   First Vice President and Assistant Treasurer of Inter-
Treasurer                                               Capital and DWSC; Treasurer of the Dean Witter Funds and
Two World Trade Center                                  the TCW/DW Funds.
New York, New York
<FN>
- ---------
*Denotes Trustees who are "interested persons" of the Fund, as defined in the
 Act.
</TABLE>
    
 
   
    In addition, Robert M. Scanlan, President of InterCapital and Chief
Operating Officer of InterCapital, DWSC, Executive Vice President of
Distributors and DWTC and a Director of DWTC, Robert S. Giambrone, Senior Vice
President of InterCapital, DWSC, Distributors and DWTC and a Director of DWTC,
Joseph J. McAlinden, Executive Vice President and Chief Investment Officer of
InterCapital and a Director of DWTC, Kenton J. Hinchliffe, Kevin Hurley, Ira N.
Ross and Paul D. Vance, Senior Vice Presidents of InterCapital, are Vice
Presidents of the Fund. In addition, Marilyn K. Cranney, First Vice President
and Assistant General Counsel of InterCapital and DWSC and Lou Anne D. McInnis
and Ruth Rossi, Vice Presidents and Assistant General Counsels of InterCapital
and DWSC, and Frank Bruttomesso and Carsten Otto, Staff Attorneys with
InterCapital, are Assistant Secretaries of the Fund.
    
 
THE BOARD OF TRUSTEES, THE INDEPENDENT TRUSTEES, AND THE COMMITTEES
 
   
    The Board of Trustees consists of eight (8) trustees. These same individuals
also serve as directors or trustees for all of the Dean Witter Funds, and are
referred to in this section as Trustees. As of the date of this Statement of
Additional Information, there are a total of 84 Dean Witter Funds, comprised of
127 portfolios. As of February 28, 1997, the Dean Witter Funds had total net
assets of approximately $84.2 billion and more than six million shareholders.
    
 
   
    Six Trustees (75% of the total number) have no affiliation or business
connection with InterCapital or any of its affiliated persons and do not own any
stock or other securities issued by InterCapital's parent company, DWDC. These
are the "disinterested" or "independent" Trustees. The other two Trustees (the
"management Trustees") are affiliated with InterCapital. Four of the six
independent Trustees are also Independent Trustees of the TCW/DW Funds.
    
 
   
    Law and regulation establish both general guidelines and specific duties for
the Independent Trustees. The Dean Witter Funds seek as Independent Trustees
individuals of distinction and experience in business and finance, government
service or academia; these are people whose advice and counsel are in demand by
others and for whom there is often competition. To accept a position on the
Funds' Boards, such individuals may reject other attractive assignments because
the Funds make substantial demands on their time. Indeed, by serving on the
Funds' Boards, certain Trustees who would otherwise be qualified and in demand
to serve on bank boards would be prohibited by law from doing so.
    
 
   
    All of the Independent Trustees serve as members of the Audit Committee and
the Committee of the Independent Trustees. Three of them also serve as members
of the Derivatives Committee. During the calendar year ended December 31, 1996,
the three Committees held a combined total of sixteen meetings. The Committees
hold some meetings at InterCapital's offices and some outside InterCapital.
Management Trustees or officers do not attend these meetings unless they are
invited for purposes of furnishing information or making a report.
    
 
   
    The Committee of the Independent Trustees is charged with recommending to
the full Board approval of management, advisory and administration contracts,
Rule 12b-1 plans and distribution and underwriting agreements; continually
reviewing Fund performance; checking on the pricing of portfolio securities,
brokerage commissions, transfer agent costs and performance, and trading among
Funds in
    
 
                                       8
<PAGE>
   
the same complex; and approving fidelity bond and related insurance coverage and
allocations, as well as other matters that arise from time to time. The
Independent Trustees are required to select and nominate individuals to fill any
Independent Trustee vacancy on the Board of any Fund that has a Rule 12b-1 plan
of distribution. Most of the Dean Witter Funds have such a plan.
    
 
   
    The Audit Committee is charged with recommending to the full Board the
engagement or discharge of the Fund's independent accountants; directing
investigations into matters within the scope of the independent accountants'
duties, including the power to retain outside specialists; reviewing with the
independent accountants the audit plan and results of the auditing engagement;
approving professional services provided by the independent accountants and
other accounting firms prior to the performance of such services; reviewing the
independence of the independent accountants; considering the range of audit and
non-audit fees; reviewing the adequacy of the Fund's system of internal
controls; and preparing and submitting Committee meeting minutes to the full
Board.
    
 
   
    Finally, the Board of each Fund has formed a Derivatives Committee to
establish parameters for and oversee the activities of the Fund with respect to
derivative investments, if any, made by the Fund.
    
 
   
DUTIES OF CHAIRMAN OF COMMITTEE OF THE INDEPENDENT TRUSTEES AND AUDIT COMMITTEE
    
 
   
    The Chairman of the Committee of the Independent Trustees and the Audit
Committee maintains an office at the Funds' headquarters in New York. He is
responsible for keeping abreast of regulatory and industry developments and the
Funds' operations and management. He screens and/or prepares written materials
and identifies critical issues for the Independent Trustees to consider,
develops agendas for Committee meetings, determines the type and amount of
information that the Committees will need to form a judgment on various issues,
and arranges to have that information furnished to Committee members. He also
arranges for the services of independent experts and consults with them in
advance of meetings to help refine reports and to focus on critical issues.
Members of the Committees believe that the person who serves as Chairman of both
Committees and guides their efforts is pivotal to the effective functioning of
the Committees.
    
 
   
    The Chairman of the Committees also maintains continuous contact with the
Funds' management, with independent counsel to the Independent Trustees and with
the Funds' independent auditors. He arranges for a series of special meetings
involving the annual review of investment advisory, management and other
operating contracts of the Funds and, on behalf of the Committees, conducts
negotiations with the Investment Manager and other service providers. In effect,
the Chairman of the Committees serves as a combination of chief executive and
support staff of the Independent Trustees.
    
 
   
    The Chairman of the Committee of the Independent Trustees and the Audit
Committee is not employed by any other organization and devotes his time
primarily to the services he performs as Committee Chairman and Independent
Trustee of the Dean Witter Funds and as an Independent Trustee and, since July
1, 1996, as Chairman of the Committee of the Independent Trustees and the Audit
Committee of the TCW/DW Funds. The current Committee Chairman has had more than
35 years experience as a senior executive in the investment company industry.
    
 
   
ADVANTAGES OF HAVING SAME INDIVIDUALS AS INDEPENDENT TRUSTEES FOR ALL DEAN
WITTER FUNDS
    
 
   
    The Independent Trustees and the Funds' management believe that having the
same Independent Trustees for each of the Dean Witter Funds avoids the
duplication of effort that would arise from having different groups of
individuals serving as Independent Trustees for each of the Funds or even of
sub-groups of Funds. They believe that having the same individuals serve as
Independent Trustees of all the Funds tends to increase their knowledge and
expertise regarding matters which affect the Fund complex generally and enhances
their ability to negotiate on behalf of each Fund with the Fund's service
providers. This arrangement also precludes the possibility of separate groups of
Independent Trustees arriving at conflicting decisions regarding operations and
management of the Funds and avoids the cost and confusion that would likely
ensue. Finally, having the same Independent Trustees serve on all Fund
    
 
                                       9
<PAGE>
   
Boards enhances the ability of each Fund to obtain, at modest cost to each
separate Fund, the services of Independent Trustees, and a Chairman of their
Committees, of the caliber, experience and business acumen of the individuals
who serve as Independent Trustees of the Dean Witter Funds.
    
 
   
COMPENSATION OF INDEPENDENT TRUSTEES
    
 
   
    The Fund pays each Independent Trustee an annual fee of $1,000 plus a per
meeting fee of $50 for meetings of the Board of Trustees or committees of the
Board of Trustees attended by the Trustee (the Fund pays the Chairman of the
Audit Committee an annual fee of $750 and pays the Chairman of the Committee of
the Independent Trustees an additional annual fee of $1,200). The Fund also
reimburses such Trustees for travel and other out-of-pocket expenses incurred by
them in connection with attending such meetings. Trustees and officers of the
Fund who are or have been employed by the Investment Manager or an affiliated
company receive no compensation or expense reimbursement from the Fund.
    
 
   
    The following table illustrates the compensation paid to the Fund's
Independent Trustees by the Fund for the fiscal year ended December 31, 1996.
    
 
   
                               FUND COMPENSATION
    
 
   
<TABLE>
<CAPTION>
                                                                   AGGREGATE
                                                                 COMPENSATION
NAME OF INDEPENDENT TRUSTEE                                      FROM THE FUND
- --------------------------------------------------------------  ---------------
<S>                                                             <C>
Michael Bozic.................................................      $1,800
Edwin J. Garn.................................................       1,850
John R. Haire.................................................       3,950
Dr. Manuel H. Johnson.........................................       1,800
Michael E. Nugent.............................................       1,800
John L. Schroeder.............................................       1,800
</TABLE>
    
 
   
    The following table illustrates the compensation paid to the Fund's
Independent Trustees for the calendar year ended December 31, 1996 for services
to the 82 Dean Witter Funds and, in the case of Messrs. Haire, Johnson, Nugent
and Schroeder, the 14 TCW/DW Funds that were in operation at December 31, 1996.
With respect to Messrs. Haire, Johnson, Nugent and Schroeder, the TCW/DW Funds
are included solely because of a limited exchange privilege between those Funds
and five Dean Witter Money Market Funds.
    
 
   
           CASH COMPENSATION FROM DEAN WITTER FUNDS AND TCW/DW FUNDS
    
 
   
<TABLE>
<CAPTION>
                                                                                                        TOTAL
                                                                   FOR SERVICE AS    FOR SERVICE        CASH
                                                                    CHAIRMAN OF          AS         COMPENSATION
                                                                   COMMITTEES OF     CHAIRMAN OF        PAID
                               FOR SERVICE                          INDEPENDENT     COMMITTEES OF   FOR SERVICES
                              AS DIRECTOR OR                         DIRECTORS/      INDEPENDENT         TO
                               TRUSTEE AND       FOR SERVICE AS     TRUSTEES AND    TRUSTEES AND       82 DEAN
                             COMMITTEE MEMBER     TRUSTEE AND          AUDIT            AUDIT          WITTER
                                OF 82 DEAN      COMMITTEE MEMBER   COMMITTEES OF    COMMITTEES OF     FUNDS AND
NAME OF                           WITTER          OF 14 TCW/DW     82 DEAN WITTER     14 TCW/DW       14 TCW/DW
INDEPENDENT TRUSTEE               FUNDS              FUNDS             FUNDS            FUNDS           FUNDS
- ---------------------------  ----------------   ----------------   --------------   -------------   -------------
Michael Bozic..............      $138,850           --                 --               --            $138,850
<S>                          <C>                <C>                <C>              <C>             <C>
Edwin J. Garn..............       140,900           --                 --               --             140,900
John R. Haire..............       106,400           $64,283           $195,450        $ 12,187         378,320
Dr. Manuel H. Johnson......       137,100            66,483            --               --             203,583
Michael E. Nugent..........       138,850            64,283            --               --             203,133
John L. Schroeder..........       137,150            69,083            --               --             206,233
</TABLE>
    
 
   
    As of the date of this Statement of Additional Information, 57 of the Dean
Witter Funds, including the Fund, have adopted a retirement program under which
an Independent Trustee who retires after serving for at least five years (or
such lesser period as may be determined by the Board) as an Independent Director
or Trustee of any Dean Witter Fund that has adopted the retirement program (each
such Fund referred to as an "Adopting Fund" and each such Trustee referred to as
an "Eligible Trustee") is entitled to retirement payments upon reaching the
eligible retirement age (normally, after attaining age 72).
    
 
                                       10
<PAGE>
   
Annual payments are based upon length of service. Currently, upon retirement,
each Eligible Trustee is entitled to receive from the Adopting Fund, commencing
as of his or her retirement date and continuing for the remainder of his or her
life, an annual retirement benefit (the "Regular Benefit") equal to 25.0% of his
or her Eligible Compensation plus 0.4166666% of such Eligible Compensation for
each full month of service as an Independent Director or Trustee of any Adopting
Fund in excess of five years up to a maximum of 50.0% after ten years of
service. The foregoing percentages may be changed by the Board.(1) "Eligible
Compensation" is one-fifth of the total compensation earned by such Eligible
Trustee for service to the Adopting Fund in the five year period prior to the
date of the Eligible Trustee's retirement. Benefits under the retirement program
are not secured or funded by the Adopting Funds.
    
 
   
    The following table illustrates the retirement benefits accrued to the
Fund's Independent Trustees by the Fund for the fiscal year ended December 31,
1996 and by the 57 Dean Witter Funds (including the Fund) for the year ended
December 31, 1996, and the estimated retirement benefits for the Fund's
Independent Trustees, to commence upon their retirement, from the Fund as of
December 31, 1996 and from the 57 Dean Witter Funds as of December 31, 1996.
    
 
   
          RETIREMENT BENEFITS FROM THE FUND AND ALL DEAN WITTER FUNDS
    
 
   
<TABLE>
<CAPTION>
                                                                              RETIREMENT BENEFITS
                                              FOR ALL ADOPTING FUNDS                                   ESTIMATED ANNUAL
                                      --------------------------------------  ACCRUED AS EXPENSES          BENEFITS
                                           ESTIMATED                                                  UPON RETIREMENT(2)
                                        CREDITED YEARS         ESTIMATED      --------------------  ----------------------
                                         OF SERVICE AT       PERCENTAGE OF                BY ALL      FROM      FROM ALL
                                          RETIREMENT           ELIGIBLE        BY THE    ADOPTING      THE      ADOPTING
NAME OF INDEPENDENT TRUSTEE              (MAXIMUM 10)        COMPENSATION       FUND       FUNDS      FUND        FUNDS
- ------------------------------------  -------------------  -----------------  ---------  ---------  ---------  -----------
<S>                                   <C>                  <C>                <C>        <C>        <C>        <C>
Michael Bozic.......................              10               50.0%      $     381  $  20,147  $     950  $    51,325
Edwin J. Garn.......................              10               50.0             553     27,772        950       51,325
John R. Haire.......................              10               50.0            (282 (3)    46,952     2,343     129,550
Dr. Manuel H. Johnson...............              10               50.0             231     10,926        950       51,325
Michael E. Nugent...................              10               50.0             396     19,217        950       51,325
John L. Schroeder...................               8               41.7             736     38,700        792       42,771
</TABLE>
    
 
- ---------
   
(1) An Eligible Trustee may elect alternate payments of his or her retirement
    benefits based upon the combined life expectancy of such Eligible Trustee
    and his or her spouse on the date of such Eligible Trustee's retirement. The
    amount estimated to be payable under this method, through the remainder of
    the later of the lives of such Eligible Trustee and spouse, will be the
    actuarial equivalent of the Regular Benefit. In addition, the Eligible
    Trustee may elect that the surviving spouse's periodic payment of benefits
    will be equal to either 50% or 100% of the previous periodic amount, an
    election that, respectively, increases or decreases the previous periodic
    amount so that the resulting payments will be the actuarial equivalent of
    the Regular Benefit.
    
 
   
(2) Based on current levels of compensation. Amount of annual benefits also
    varies depending on the Trustee's elections described in Footnote (1) above.
    
 
   
(3) This number reflects the effect of the extension of Mr. Haire's term as
    Trustee until June 1, 1998.
    
 
   
    As of the date of this Statement of Additional Information, the aggregate
number of shares of beneficial interest of the Fund owned by the Fund's officers
and Trustees as a group was less than 1 percent of the Fund's shares of
beneficial interest outstanding.
    
 
INVESTMENT PRACTICES AND POLICIES
- --------------------------------------------------------------------------------
 
    As stated in the Prospectus, the investment objective of the Fund is to
provide current income and long-term growth of income and capital. This
objective is fundamental and may not be changed without shareholder approval.
The Fund seeks to achieve its investment objective by investing in equity and
fixed-income securities of companies engaged in the public utilities industry.
The term "public utilities industry" consists of companies engaged in the
manufacture, production, generation, transmission, sale and distribution of gas
and electric energy, as well as companies engaged in the communications field,
including telephone, telegraph, satellite, microwave and other companies
providing communication facilities for the public, but excluding public
broadcasting companies. For purposes of the Fund, a company will be considered
to be in the public utilities industry if, during the most recent twelve month
 
                                       11
<PAGE>
period, at least 50% of the company's gross revenues, on a consolidated basis,
is derived from the public utilities industry. Under ordinary circumstances, at
least 65% of the Fund's total assets will be invested in securities of companies
in the public utilities industry.
 
    The Investment Manager believes the Fund's investment policies are suited to
benefit from certain characteristics and historical performance of the
securities of public utility companies. Many of these companies have
historically set a pattern of paying regular dividends and increasing their
common stock dividends over time, and the average common stock dividend yield of
utilities historically has substantially exceeded that of industrial stocks. The
Investment Manager believes that these factors may not only provide current
income but also generally tend to moderate risk and thus may enhance the
opportunity for appreciation of securities owned by the Fund, although the
potential for capital appreciation has historically been lower for many utility
stocks compared with most industrial stocks. There can be no assurance that the
historical investment performance of the public utilities industry will be
indicative of future events and performance.
 
    The Fund invests in both equity securities (common stocks and securities
convertible into common stock) and fixed-income securities (bonds and preferred
stock) in the public utilities industry. The Fund does not have any set policies
to concentrate within any particular segment of the utilities industry. The Fund
will shift its asset allocation without restriction between types of utilities
and between equity and fixed-income securities based upon the Investment
Manager's determination of how to achieve the Fund's investment objective in
light of prevailing market, economic and financial conditions. For example, at a
particular time the Investment Manager may choose to allocate up to 100% of the
Fund's assets in a particular type of security (for example, equity securities)
or in a specific utility industry segment (for example, electric utilities).
 
    Criteria utilized by the Investment Manager in the selection of equity
securities include the following screens: earnings and dividend growth; book
value; dividend discount; and price/earnings relationships. In addition, the
Investment Manager makes continuing assessments of management, the prevailing
regulatory framework and industry trends. The Investment Manager may also
utilize computer-based equity selection models in connection with stock
allocation in the equity portion of the Fund's portfolio. In keeping with the
Fund's objective, if in the opinion of the Investment Manager favorable
conditions for capital growth of equity securities are not prevalent at a
particular time, the Fund may allocate its assets predominantly or exclusively
in debt securities with the aim of obtaining current income as well as
preserving capital and thus benefiting long term growth of capital.
 
    The Fund may purchase equity securities sold on the New York, American and
other stock exchanges and in the over-the-counter market. Fixed-income
securities in which the Fund may invest are debt securities and preferred
stocks, which are rated at the time of purchase Baa or better by Moody's
Investors Service Inc. ("Moody's") or BBB or better by Standard & Poor's
Corporation ("S&P"), or which, if unrated, are deemed to be of comparable
quality by the Fund's Trustees. The Fund may also purchase equity and
fixed-income securities issued by foreign issuers. Under normal circumstances
the average weighted maturity of the debt portion of the Fund's portfolio is
expected to be in excess of seven years. A description of corporate bond ratings
is contained in the Appendix to the Statement of Additional Information.
 
    There may be periods during which, in the opinion of the Investment Manager,
market conditions warrant reduction of some or all of the Fund's securities
holdings. During such periods, the Fund may adopt a temporary "defensive"
posture in which greater than 35% of its net assets are invested in cash or
money market instruments. Money market instruments in which the Fund may invest
are securities issued or guaranteed by the U.S. Government (Treasury bills,
notes and bonds, including zero coupon securities); bank obligations; Eurodollar
certificates of deposit; obligations of savings institutions; fully insured
certificates of deposit; and commercial paper rated within the two highest
grades by Moody's or S&P or, if not rated, are issued by a company having an
outstanding debt issue rated at least AA by S&P or Aa by Moody's.
 
                                       12
<PAGE>
U.S. GOVERNMENT SECURITIES
 
    As discussed in the Prospectus, the Fund may invest up to 35% of its total
assets in, among other securities, securities issued by the U.S. Government, its
agencies or instrumentalities. Such securities include:
 
        (1) U.S. Treasury bills (maturities of one year or less), U.S. Treasury
    notes (maturities of one to ten years) and U.S. Treasury bonds (generally
    maturities of greater than ten years), all of which are direct obligations
    of the U.S. Government and, as such, are backed by the "full faith and
    credit" of the United States.
 
        (2) Securities issued by agencies and instrumentalities of the U.S.
    Government which are backed by the full faith and credit of the United
    States. Among the agencies and instrumentalities issuing such obligations
    are the Federal Housing Administration, the Government National Mortgage
    Association ("GNMA"), the Department of Housing and Urban Development, the
    Export-Import Bank, the Farmers Home Administration, the General Services
    Administration, the Maritime Administration and the Small Business
    Administration. The maturities of such obligations range from three months
    to 30 years.
 
        (3) Securities issued by agencies and instrumentalities which are not
    backed by the full faith and credit of the United States, but whose issuing
    agency or instrumentality has the right to borrow, to meet its obligations,
    from an existing line of credit with the U.S. Treasury. Among the agencies
    and instrumentalities issuing such obligations are the Tennessee Valley
    Authority, the Federal National Mortgage Association ("FNMA"), the Federal
    Home Loan Mortgage Corporation ("FHLMC") and the U.S. Postal Service.
 
        (4) Securities issued by agencies and instrumentalities which are not
    backed by the full faith and credit of the United States, but which are
    backed by the credit of the issuing agency or instrumentality. Among the
    agencies and instrumentalities issuing such obligations are the Federal Farm
    Credit System and the Federal Home Loan Banks.
 
    Neither the value nor the yield of the U.S. Government securities which may
be invested in by the Fund are guaranteed by the U.S. Government. Such values
and yield will fluctuate with changes in prevailing interest rates and other
factors. Generally, as prevailing interest rates rise, the value of any U.S.
Government securities held by the Fund will fall. Such securities with longer
maturities generally tend to produce higher yields and are subject to greater
market fluctuation as a result of changes in interest rates than debt securities
with shorter maturities. The Fund is not limited as to the maturities of the
U.S. Government securities in which it may invest with respect to 35% of its
total assets.
 
ZERO COUPON TREASURY SECURITIES
 
    A portion of the U.S. Government securities purchased by the Fund may be
"zero coupon" Treasury securities. These are U.S. Treasury bills, notes and
bonds which have been stripped of their unmatured interest coupons and receipts
or which are certificates representing interests in such stripped debt
obligations and coupons. Such securities are purchased at a discount from their
face amount, giving the purchaser the right to receive their full value at
maturity. A zero coupon security pays no interest to its holder during its life.
Its value to an investor consists of the difference between its face value at
the time of maturity and the price for which it was acquired, which is generally
an amount significantly less than its face value (sometimes referred to as a
"deep discount" price).
 
    The interest earned on such securities is, implicitly, automatically
compounded and paid out at maturity. While such compounding at a constant rate
eliminates the risk of receiving lower yields upon reinvestment of interest if
prevailing interest rates decline, the owner of a zero coupon security will be
unable to participate in higher yields upon reinvestment of interest received if
prevailing interest rates rise. For this reason, zero coupon securities are
subject to substantially greater market price fluctuations during periods of
changing prevailing interest rates than are comparable debt securities which
make current distributions of interest. Current federal tax law requires that a
holder (such as the Fund) of a zero coupon security accrue a portion of the
discount at which the security was purchased as income each
 
                                       13
<PAGE>
year even though the Fund receives no interest payments in cash on the security
during the year. See "Dividends, Distributions and Taxes" for a discussion of
the tax treatment of zero coupon Treasury securities.
 
    Currently the only U.S. Treasury security issued without coupons is the
Treasury bill. However, in the last few years a number of banks and brokerage
firms have separated ("stripped") the principal portions from the coupon
portions of the U.S. Treasury bonds and notes and sold them separately in the
form of receipts or certificates representing undivided interests in these
instruments (which instruments are generally held by a bank in a custodial or
trust account).
 
FOREIGN SECURITIES
 
    As stated in the Prospectus, the Fund may invest in securities issued by
foreign issuers. Investors should carefully consider the risks of investing in
securities of foreign issuers and securities denominated in non-U.S. currencies.
Fluctuations in the relative rates of exchange between the currencies of
different nations will affect the value of the Fund's investments. Changes in
foreign currency exchange rates relative to the U.S. dollar will affect the U.S.
dollar value of the Fund's assets denominated in that currency and thereby
impact upon the Fund's total return on such assets.
 
    Foreign currency exchange rates are determined by forces of supply and
demand on the foreign exchange markets. These forces are themselves affected by
the international balance of payments and other economic and financial
conditions, government intervention, speculation and other factors. Moreover,
foreign currency exchange rates may be affected by the regulatory control of the
exchanges on which the currencies trade.
 
    Investments in foreign securities will also occasion risks relating to
political and economic developments abroad, including the possibility of
expropriations or confiscatory taxation, limitations on the use or transfer of
Fund assets and any effects of foreign social, economic or political
instability. Foreign companies are not subject to the regulatory requirements of
U.S. companies and, as such, there may be less publicly available information
about such companies. Moreover, foreign companies are not subject to uniform
accounting, auditing and financial reporting standards and requirements
comparable to those applicable to U.S. companies.
 
    Securities of foreign issuers may be less liquid than comparable securities
of U.S. issuers and, as such, their price changes may be more volatile.
Furthermore, foreign exchanges and broker-dealers are generally subject to less
government and exchange scrutiny and regulation than their American
counterparts. Brokerage commissions, dealer concessions and other transaction
costs may be higher on foreign markets than in the U.S. In addition, differences
in clearance and settlement procedures on foreign markets may occasion delays in
settlements of Fund trades effected in such markets. Inability to dispose of
portfolio securities due to settlement delays could result in losses to the Fund
due to subsequent declines in value of such securities and the inability of the
Fund to make intended security purchases due to settlement problems could result
in a failure of the Fund to make potentially advantageous investments. The Fund
may invest up to 10% of the value of its total assets, at the time of purchase,
in securities issued by foreign issuers, with a maximum of 10% of the value of
its total assets, at the time of purchase, invested in such securities that are
not American Depository Receipts.
 
LENDING OF PORTFOLIO SECURITIES
    Consistent with applicable regulatory requirements, the Fund may lend its
portfolio securities to brokers, dealers and other financial institutions,
provided that such loans are callable at any time by the Fund (subject to notice
provisions described below), and are at all times secured by cash or cash
equivalents, which are maintained in a segregated account pursuant to applicable
regulations and that are equal to at least the market value, determined daily,
of the loaned securities. The advantage of such loans is that the Fund continues
to receive the income on the loaned securities while at the same time earning
interest on the cash amounts deposited as collateral, which will be invested in
short-term obligations. The Fund will not lend its portfolio securities if such
loans are not permitted by the laws or regulations of any state in which its
shares are qualified for sale and will not lend more than 25% of the value of
its total assets. A loan may be terminated by the borrower on one business days'
notice, or by
 
                                       14
<PAGE>
the Fund on four business days' notice. If the borrower fails to deliver the
loaned securities within four days after receipt of notice, the Fund could use
the collateral to replace the securities while holding the borrower liable for
any excess of replacement cost over collateral. As with any extensions of
credit, there are risks of delay in recovery and in some cases even loss of
rights in the collateral should the borrower of the securities fail financially.
However, these loans of portfolio securities will only be made to firms deemed
by the Fund's management to be creditworthy and when the income which can be
earned from such loans justifies the attendant risks. Upon termination of the
loan, the borrower is required to return the securities to the Fund. Any gain or
loss in the market price during the loan period would inure to the Fund. The
credit worthiness of firms to which the Fund lends its portfolio securities will
be monitored on an ongoing basis by the Investment Manager pursuant to
procedures adopted and reviewed, on an ongoing basis, by the Board of Trustees
of the Fund.
 
   
    When voting or consent rights which accompany loaned securities pass to the
borrower, the Fund will follow the policy of calling the loaned securities, to
be delivered within one day after notice, to permit the exercise of such rights
if the matters involved would have a material effect on the Fund's investment in
such loaned securities. The Fund will pay reasonable finder's, administrative
and custodial fees in connection with a loan of its securities. However, the
Fund did not lend any of its portfolio securities during the year ended December
31, 1996.
    
 
WHEN-ISSUED AND DELAYED DELIVERY SECURITIES AND FORWARD COMMITMENTS
 
   
    As stated in the Prospectus, from time to time the Fund may purchase
securities on a when-issued or delayed delivery basis or may purchase or sell
securities on a forward commitment basis. When such transactions are negotiated,
the price is fixed at the time of the commitment, but delivery and payment can
take place a month or more after the date of commitment. While the Fund will
only purchase securities on a when-issued, delayed delivery or forward
commitment basis with the intention of acquiring the securities, the Fund may
sell the securities before the settlement date, if it is deemed advisable. The
securities so purchased or sold are subject to market fluctuation and no
interest or dividends accrue to the purchaser prior to the settlement date. At
the time the Fund makes the commitment to purchase or sell securities on a
when-issued, delayed delivery or forward commitment basis, it will record the
transaction and thereafter reflect the value, each day, of such security
purchased, or if a sale, the proceeds to be received, in determining its net
asset value. At the time of delivery of the securities, their value may be more
or less than the purchase or sale price. The Fund will also establish a
segregated account with its custodian bank in which it will continually maintain
cash or cash equivalents or other liquid portfolio securities equal in value to
commitments to purchase securities on a when-issued, delayed delivery or forward
commitment basis. Subject to the foregoing restrictions, the Fund may purchase
securities on such basis without limit. The Investment Manager and the Board of
Trustees do not believe that the Fund's net asset value will be adversely
affected by the purchase of securities on such basis.
    
 
WHEN, AS AND IF ISSUED SECURITIES
 
   
    As stated in the Prospectus, the Fund may purchase securities on a "when, as
and if issued" basis under which the issuance of the security depends upon the
occurrence of a subsequent event, such as approval of a merger, corporate
reorganization, leveraged buyout or debt restructuring. The commitment for the
purchase of any such security will not be recognized in the portfolio of the
Fund until the Investment Manager determines that issuance of the security is
probable. At such time, the Fund will record the transaction and, in determining
its net asset value, will reflect the value of the security daily. At such time,
the Fund will also establish a segregated account with its custodian bank in
which it will maintain cash or cash equivalents or other liquid portfolio
securities equal in value to recognized commitments for such securities. Once a
segregated account has been established, if the anticipated event does not occur
and the securities are not issued, the Fund will have lost an investment
opportunity. The value of the Fund's commitments to purchase the securities of
any one issuer, together with the value of all securities of such issuer owned
by the Fund, may not exceed 5% of the value of the Fund's total assets at the
time the initial commitment to purchase such securities is made (see "Investment
Restrictions"). Subject to the foregoing restrictions, the Fund may purchase
securities on such basis
    
 
                                       15
<PAGE>
without limit. An increase in the percentage of the Fund's assets committed to
the purchase of securities on a "when, as and if issued" basis may increase the
volatility of its net asset value. The Investment Manager and the Trustees do
not believe that the net asset value of the Fund will be adversely affected by
its purchase of securities on such basis. The Fund may also sell securities on a
"when, as and if issued" basis provided that the issuance of the security will
result automatically from the exchange or conversion of a security owned by the
Fund at the time of the sale.
 
PRIVATE PLACEMENTS
 
    The Fund may invest up to 5% of its total assets in securities which are
subject to restrictions on resale because they have not been registered under
the Securities Act of 1933, as amended (the "Securities Act"), or which are
otherwise not readily marketable. (Securities eligible for resale pursuant to
Rule 144A of the Securities Act, and determined to be liquid pursuant to the
procedures discussed in the following paragraph, are not subject to the
foregoing restriction.) These securities are generally referred to as private
placements or restricted securities. Limitations on the resale of such
securities may have an adverse effect on their marketability, and may prevent
the Fund from disposing of them promptly at reasonable prices. The Fund may have
to bear the expense of registering such securities for resale and the risk of
substantial delays in effecting such registration.
 
   
    The Securities and Exchange Commission has adopted Rule 144A under the
Securities Act, which permits the Fund to sell restricted securities to
qualified institutional buyers without limitation. The Investment Manager,
pursuant to procedures adopted by the Trustees of the Fund, will make a
determination as to the liquidity of each restricted security purchased by the
Fund. If a restricted security is determined to be "liquid", such security will
not be included within the category "illiquid securities," which is limited by
the Fund's investment restrictions to 10% of the Fund's total assets.
    
 
REPURCHASE AGREEMENTS
 
    As discussed in the Prospectus, when cash may be available for only a few
days, it may be invested by the Fund in repurchase agreements until such time as
it may otherwise be invested or used for payments of obligations of the Fund.
These agreements, which may be viewed as a type of secured lending by the Fund,
typically involve the acquisition by the Fund of debt securities from a selling
financial institution such as a bank, savings and loan association or
broker-dealer. The agreement provides that the Fund will sell back to the
institution, and that the institution will repurchase, the underlying security
("collateral") at a specified price and at a fixed time in the future, usually
not more than seven days from the date of purchase. The collateral will be
maintained in a segregated account and will be marked to market daily to
determine that the value of the collateral, as specified in the agreement, does
not decrease below the purchase price plus accrued interest. If such decrease
occurs, additional collateral will be requested and, when received, added to the
account to maintain full collateralization. The Fund will accrue interest from
the institution until the time when the repurchase is to occur. Although such
date is deemed by the Fund to be the maturity date of a repurchase agreement,
the maturities of securities subject to repurchase agreements are not subject to
any limits.
 
    While repurchase agreements involve certain risks not associated with direct
investments in debt securities, the Fund follows procedures designed to minimize
such risks. These procedures include effecting repurchase transactions only with
large, well-capitalized and well-established financial institutions whose
financial condition will be continually monitored by the Investment Manager
subject to procedures established by the Board of Trustees of the Fund. In
addition, as described above, the value of the collateral underlying the
repurchase agreement will be at least equal to the repurchase price, including
any accrued interest earned on the repurchase agreement. In the event of a
default or bankruptcy by a selling financial institution, the Fund will seek to
liquidate such collateral. However, the exercising of the Fund's right to
liquidate such collateral could involve certain costs or delays and, to the
extent that proceeds from any sale upon a default of the obligation to
repurchase were less than the repurchase price, the Fund could suffer a loss. It
is the current policy of the Fund not to invest in repurchase agreements that do
not mature within seven days if any such investment, together with any other
illiquid assets held by the Fund, amounts to more than 10% of its net assets.
 
                                       16
<PAGE>
OPTIONS AND FUTURES TRANSACTIONS
 
    The Fund may write covered call options against securities held in its
portfolio and covered put options on eligible portfolio securities and stock
indexes and purchase options of the same series to effect closing transactions,
and may hedge against potential changes in the market value of investments (or
anticipated investments) and facilitate the reallocation of the Fund's assets
into and out of equities and fixed-income securities by purchasing put and call
options on portfolio (or eligible portfolio) securities and engaging in
transactions involving futures contracts and options on such contracts.
 
   
    Call and put options on U.S. Treasury notes, bonds and bills and equity
securities are listed on Exchanges and are written in over-the-counter
transactions ("OTC options"). Listed options are issued by the Options Clearing
Corporation ("OCC"). Ownership of a listed call option gives the Fund the right
to buy from the OCC the underlying security covered by the option at the stated
exercise price (the price per unit of the underlying security) by filing an
exercise notice prior to the expiration date of the option. The writer (seller)
of the option would then have the obligation to sell to the OCC the underlying
security at that exercise price prior to the expiration date of the option,
regardless of its then current market price. Ownership of a listed put option
would give the Fund the right to sell the underlying security to the OCC at the
stated exercise price. Upon notice of exercise of the put option, the writer of
the put would have the obligation to purchase the underlying security from the
OCC at the exercise price. The Fund did not enter into any options or futures
transactions during the fiscal year ended December 31, 1996 and does not intend
to enter into any such transactions during its fiscal year ending December 31,
1997.
    
 
    OPTIONS ON TREASURY BONDS AND NOTES.  Because trading in options written on
Treasury bonds and notes tends to center on the most recently auctioned issues,
the exchanges on which such securities trade will not continue indefinitely to
introduce options with new expirations to replace expiring options on particular
issues. Instead, the expirations introduced at the commencement of options
trading on a particular issue will be allowed to run their course, with the
possible addition of a limited number of new expirations as the original ones
expire. Options trading on each issue of bonds or notes will thus be phased out
as new options are listed on more recent issues, and options representing a full
range of expirations will not ordinarily be available for every issue on which
options are traded.
 
    OPTIONS ON TREASURY BILLS.  Because a deliverable Treasury bill changes from
week to week, writers of Treasury bill calls cannot provide in advance for their
potential exercise settlement obligations by acquiring and holding the
underlying security. However, if the Fund holds a long position in Treasury
bills with a principal amount of the securities deliverable upon exercise of the
option, the position may be hedged from a risk standpoint by the writing of a
call option. For so long as the call option is outstanding, the Fund will hold
the Treasury bills in a segregated account with its Custodian, so that they will
be treated as being covered.
 
    OTC OPTIONS.  Exchange-listed options are issued by the OCC which assures
that all transactions in such options are properly executed. OTC options are
purchased from or sold (written) to dealers or financial institutions which have
entered into direct agreements with the Fund. With OTC options, such variables
as expiration date, exercise price and premium will be agreed upon between the
Fund and the transacting dealer, without the intermediation of a third party
such as the OCC. If the transacting dealer fails to make or take delivery of the
securities underlying an option it has written, in accordance with the terms of
that option, the Fund would lose the premium paid for the option as well as any
anticipated benefit of the transaction. The Fund will engage in OTC option
transactions only with primary U.S. Government securities dealers recognized by
the Federal Reserve Bank of New York.
 
    COVERED CALL WRITING.  The Fund is permitted to write covered call options
on portfolio securities, without limit, in order to aid in achieving its
investment objective. Generally, a call option is "covered" if the Fund owns, or
has the right to acquire, without additional cash consideration (or for
additional cash consideration held for the Fund by its Custodian in a segregated
account) the underlying security subject to the option except that in the case
of call options on U.S. Treasury Bills, the Fund might own U.S. Treasury Bills
of a different series from those underlying the call option, but with a
principal amount and value corresponding to the exercise price and a maturity
date no later than that of the securities
 
                                       17
<PAGE>
   
deliverable under the call option. A call option is also covered if the Fund
holds a call on the same security as the underlying security of the written
option, where the exercise price of the call used for coverage is equal to or
less than the exercise price of the call written or greater than the exercise
price of the call written if the mark to market difference is maintained by the
Fund in cash, U.S. Government securities or other liquid obligations which the
Fund holds in a segregated account maintained with its Custodian.
    
 
    The Fund will receive from the purchaser, in return for a call it has
written, a "premium"; i.e., the price of the option. Receipt of these premiums
may better enable the Fund to achieve a greater total return than would be
realized from holding the underlying securities alone. Moreover, the income
received from the premium will offset a portion of the potential loss incurred
by the Fund if the securities underlying the option are ultimately sold by the
Fund at a loss. The income received from premiums will fluctuate with varying
economic market conditions. If the market value of the portfolio securities upon
which call options have been written increases, the Fund may receive less total
return from the portion of its portfolio upon which calls have been written than
it would have had such calls not been written.
 
    As regards listed options and certain OTC options, during the option period,
the Fund may be required, at any time, to deliver the underlying security
against payment of the exercise price on any calls it has written (exercise of
certain listed and OTC options may be limited to specific expiration dates).
This obligation is terminated upon the expiration of the option period or at
such earlier time when the writer effects a closing purchase transaction. A
closing purchase transaction is accomplished by purchasing an option of the same
series as the option previously written. However, once the Fund has been
assigned an exercise notice, the Fund will be unable to effect a closing
purchase transaction.
 
    Closing purchase transactions are ordinarily effected to realize a profit on
an outstanding call option to prevent an underlying security from being called,
to permit the sale of an underlying security or to enable the Fund to write
another call option on the underlying security with either a different exercise
price or expiration date or both. Also, effecting a closing purchase transaction
will permit the cash or proceeds from the concurrent sale of any securities
subject to the option to be used for other investments by the Fund. The Fund may
realize a net gain or loss from a closing purchase transaction depending upon
whether the amount of the premium received on the call option is more or less
than the cost of effecting the closing purchase transaction. Any loss incurred
in a closing purchase transaction may be wholly or partially offset by
unrealized appreciation in the market value of the underlying security.
Conversely, a gain resulting from a closing purchase transaction could be offset
in whole or in part or exceeded by a decline in the market value of the
underlying security.
 
    If a call option expires unexercised, the Fund realizes a gain in the amount
of the premium on the option less the commission paid. Such a gain, however, may
be offset by depreciation in the market value of the underlying security during
the option period. If a call option is exercised, the Fund realizes a gain or
loss from the sale of the underlying security equal to the difference between
the purchase price of the underlying security and the proceeds of the sale of
the security plus the premium received for on the option less the commission
paid.
 
    Options written by a Fund normally have expiration dates of from up to nine
months (equity securities) to eighteen months (fixed-income securities) from the
date written. The exercise price of a call option may be below, equal to or
above the current market value of the underlying security at the time the option
is written. See "Risks of Options and Futures Transactions," below.
 
   
    COVERED PUT WRITING.  As a writer of a covered put option, the Fund incurs
an obligation to buy the security underlying the option from the purchaser of
the put, at the option's exercise price at any time during the option period, at
the purchaser's election (certain listed and OTC put options written by the Fund
will be exercisable by the purchaser only on a specific date). A put is
"covered" if, at all times, the Fund maintains, in a segregated account
maintained on its behalf at the Fund's Custodian, cash, U.S. Government
securities or other liquid portfolio securities in an amount equal to at least
the exercise price of the option, at all times during the option period.
Similarly, a short put position could be covered by the Fund by its purchase of
a put option on the same security as the underlying security of the written
option,
    
 
                                       18
<PAGE>
   
where the exercise price of the purchased option is equal to or more than the
exercise price of the put written or less than the exercise price of the put
written if the mark to market difference is maintained by the Fund in cash, U.S.
Government securities or other liquid portfolio securities which the Fund holds
in a segregated account maintained at its Custodian. In writing puts, the Fund
assumes the risk of loss should the market value of the underlying security
decline below the exercise price of the option (any loss being decreased by the
receipt of the premium on the option written). In the case of listed options,
during the option period, the Fund may be required, at any time, to make payment
of the exercise price against delivery of the underlying security. The operation
of and limitations on covered put options in other respects are substantially
identical to those of call options.
    
 
    The Fund will write put options for two purposes: (1) to receive the income
derived from the premiums paid by purchasers; and (2) when the Investment
Manager wishes to purchase the security underlying the option at a price lower
than its current market price, in which case it will write the covered put at an
exercise price reflecting the lower purchase price sought. The potential gain on
a covered put option is limited to the premium received on the option (less the
commissions paid on the transaction) while the potential loss equals the
difference between the exercise price of the option and the current market price
of the underlying securities when the put is exercised, offset by the premium
received (less the commissions paid on the transaction).
 
    PURCHASING CALL AND PUT OPTIONS.  The Fund may purchase listed and OTC call
and put options in amounts equaling up to 5% of its total assets. The Fund may
purchase call options only in order to close out a covered call position (see
"Covered Call Writing" above). The purchase of the call option to effect a
closing transaction on a call written over-the-counter may be a listed or an OTC
option. In either case, the call purchased is likely to be on the same
securities and have the same terms as the written option. If purchased
over-the-counter, the option would generally be acquired from the dealer or
financial institution which purchased the call written by the Fund.
 
    The Fund may purchase put options on securities which it holds (or has the
right to acquire) in its portfolio only to protect itself against a decline in
the value of the security. If the value of the underlying security were to fall
below the exercise price of the put purchased in an amount greater than the
premium paid for the option, the Fund would incur no additional loss. The Fund
may also purchase put options to close out written put positions in a manner
similar to call options closing purchase transactions. In addition, the Fund may
sell a put option which it has previously purchased prior to the sale of the
securities underlying such option. Such a sale would result in a net gain or
loss depending on whether the amount received on the sale is more or less than
the premium and other transaction costs paid on the put option which is sold.
Any such gain or loss could be offset in whole or in part by a change in the
market value of the underlying security. If a put option purchased by the Fund
expired without being sold or exercised, the premium would be lost.
 
    RISKS OF OPTIONS TRANSACTIONS.  During the option period, the covered call
writer has, in return for the premium on the option, given up the opportunity
for capital appreciation above the exercise price should the market price of the
underlying security increase, but has retained the risk of loss should the price
of the underlying security decline. The secured put writer also retains the risk
of loss should the market value of the underlying security decline below the
exercise price of the option less the premium received on the sale of the
option. In both cases, the writer has no control over the time when it may be
required to fulfill its obligation as a writer of the option. Once an option
writer has received an exercise notice, it cannot effect a closing purchase
transaction in order to terminate its obligation under the option and must
deliver or receive the underlying securities at the exercise price.
 
    Prior to exercise or expiration, an option position can only be terminated
by entering into a closing purchase or sale transaction. If a covered call
option writer is unable to effect a closing purchase transaction or to purchase
an offsetting over-the-counter option, it cannot sell the underlying security
until the option expires or the option is exercised. Accordingly, a covered call
option writer may not be able to sell an underlying security at a time when it
might otherwise be advantageous to do so. A secured put option writer who is
unable to effect a closing purchase transaction or to purchase an offsetting
over-
 
                                       19
<PAGE>
the-counter option would continue to bear the risk of decline in the market
price of the underlying security until the option expires or is exercised. In
addition, a secured put writer would be unable to utilize the amount held in
cash or U.S. Government or other high grade short-term debt obligations as
security for the put option for other investment purposes until the exercise or
expiration of the option.
 
    As discussed in the Prospectus, the Fund's ability to close out its position
as a writer of an option is dependent upon the existence of a liquid secondary
market on option Exchanges. There is no assurance that such a market will exist,
particularly in the case of OTC options, as such options will generally only be
closed out by entering into a closing purchase transaction with the purchasing
dealer. However, the Fund may be able to purchase an offsetting option which
does not close out its position as a writer but constitutes an asset of equal
value to the obligation under the option written. If the Fund is not able to
either enter into a closing purchase transaction or purchase an offsetting
position, it will be required to maintain the securities subject to the call, or
the collateral underlying the put, even though it might not be advantageous to
do so, until a closing transaction can be entered into (or the option is
exercised or expires).
 
    Among the possible reasons for the absence of a liquid secondary market on
an Exchange are: (i) insufficient trading interest in certain options; (ii)
restrictions on transactions imposed by an Exchange; (iii) trading halts,
suspensions or other restrictions imposed with respect to particular classes or
series of options or underlying securities; (iv) interruption of the normal
operations on an Exchange; (v) inadequacy of the facilities of an Exchange or
the Options Clearing Corporation ("OCC") to handle current trading volume; or
(vi) a decision by one or more Exchanges to discontinue the trading of options
(or a particular class or series of options), in which event the secondary
market on that Exchange (or in that class or series of options) would cease to
exist, although outstanding options on that Exchange that had been issued by the
OCC as a result of trades on that Exchange would generally continue to be
exercisable in accordance with their terms.
 
    Exchanges limit the amount by which the price of a futures contract may move
on any day. If the price moves equal the daily limit on successive days, then it
may prove impossible to liquidate a futures position until the daily limit moves
have ceased. In the event of adverse price movements, the Fund would continue to
be required to make daily cash payments of variation margin on open futures
positions. In such situations, if the Fund has insufficient cash, it may have to
sell portfolio securities to meet daily variation margin requirements at a time
when it may be disadvantageous to do so. In addition, the Fund may be required
to take or make delivery of the instruments underlying interest rate futures
contracts it holds at a time when it is disadvantageous to do so. The inability
to close out options and futures positions could also have an adverse impact on
the Fund's ability to effectively hedge its portfolio.
 
    In the event of the bankruptcy of a broker through which the Fund engages in
transactions in options, futures or options thereon, the Fund could experience
delays and/or losses in liquidating open positions purchased or sold through the
broker and/or incur a loss of all or part of its margin deposits with the
broker. Similarly, in the event of the bankruptcy of the writer of an OTC option
purchased by the Fund, the Fund could experience a loss of all or part of the
value of the option. Transactions are entered into by the Fund only with brokers
or financial institutions deemed creditworthy by the Investment Manager.
 
    Each of the Exchanges has established limitations governing the maximum
number of call or put options on the same underlying security or futures
contract (whether or not covered) which may be written by a single investor,
whether acting alone or in concert with others (regardless of whether such
options are written on the same or different Exchanges or are held or written on
one or more accounts or through one or more brokers). An Exchange may order the
liquidation of positions found to be in violation of these limits and it may
impose other sanctions or restrictions. These position limits may restrict the
number of listed options which the Fund may write.
 
    While the futures contracts and options transactions to be engaged in by the
Fund for the purpose of hedging the Fund's portfolio securities are not
speculative in nature, there are risks inherent in the use
 
                                       20
<PAGE>
of such instruments. One such risk which may arise in employing futures
contracts to protect against the price volatility of portfolio securities is
that the prices of securities and indexes subject to futures contracts (and
thereby the futures contract prices) may correlate imperfectly with the behavior
of the cash prices of the Fund's portfolio securities. Another such risk is that
prices of interest rate futures contracts may not move in tandem with the
changes in prevailing interest rates against which the Fund seeks a hedge. A
correlation may also be distorted by the fact that the futures market is
dominated by short-term traders seeking to profit from the difference between a
contract or security price objective and their cost of borrowed funds. Such
distortions are generally minor and would diminish as the contract approached
maturity.
 
    The hours of trading for options may not conform to the hours during which
the underlying securities are traded. To the extent that the option markets
close before the markets for the underlying securities, significant price and
rate movements can take place in the underlying markets that cannot be reflected
in the option markets.
 
    STOCK INDEX OPTIONS.  Options on stock indexes are similar to options on
stock except that, rather than the right to take or make delivery of stock at a
specified price, an option on a stock index gives the holder the right to
receive, upon exercise of the option, an amount of cash if the closing level of
the stock index upon which the option is based is greater than, in the case of a
call, or less than, in the case of a put, the exercise price of the option. This
amount of cash is equal to such difference between the closing price of the
index and the exercise price of the option expressed in dollars times a
specified multiple (the "multiplier"). The multiplier for an index option
performs a function similar to the unit of trading for a stock option. It
determines the total dollar value per contract of each point in the difference
between the exercise price of an option and the current level of the underlying
index. A multiplier of 100 means that a one-point difference will yield $100.
Options on different indexes may have different multipliers. The writer of the
option is obligated, in return for the premium received, to make delivery of
this amount. Unlike stock options, all settlements are in cash and a gain or
loss depends on price movements in the stock market generally (or in a
particular segment of the market) rather than the price movements in individual
stocks. Currently, options are traded on the S&P 100 Index and the S&P 500 Index
on the Chicago Board Options Exchange, the Major Market Index and the Computer
Technology Index, Oil Index and Institutional Index on the American Stock
Exchange and the NYSE Index and NYSE Beta Index on the New York Stock Exchange,
The Financial News Composite Index on the Pacific Stock Exchange and the Value
Line Index, National O-T-C Index and Utilities Index on the Philadelphia Stock
Exchange, each of which and any similar index on which options are traded in the
future which include stocks that are not limited to any particular industry or
segment of the market is referred to as a "broadly based stock market index."
Options on stock indexes provide the Fund with a means of protecting the Fund
against the risk of market wide price movements. If the Investment Manager
anticipates a market decline, the Fund could purchase a stock index put option.
If the expected market decline materialized, the resulting decrease in the value
of the Fund's portfolio would be offset to the extent of the increase in the
value of the put option. If the Investment Manager anticipates a market rise,
the Fund may purchase a stock index call option to enable the Fund to
participate in such rise until completion of anticipated common stock purchases
by the Fund. Purchases and sales of stock index options also enable the
Investment Manager to more speedily achieve changes in the Fund's equity
positions.
 
   
    The Fund will write put options on stock indexes only if such positions are
covered by cash, U.S. Government securities or other liquid portfolio securities
equal to the aggregate exercise price of the puts, which cover is held for the
Fund in a segregated account maintained for it by the Fund's Custodian. All call
options on stock indexes written by the Fund will be covered either by a
portfolio of stocks substantially replicating the movement of the index
underlying the call option or by holding a separate call option on the same
stock index with a strike price no higher than the strike price of the call
option sold by the Fund.
    
 
    RISKS OF OPTIONS ON INDEXES.  Because exercises of stock index options are
settled in cash, call writers such as the Fund cannot provide in advance for
their potential settlement obligations by acquiring and holding the underlying
securities. A call writer can offset some of the risk of its writing position by
 
                                       21
<PAGE>
holding a diversified portfolio of stocks similar to those on which the
underlying index is based. However, most investors cannot, as a practical
matter, acquire and hold a portfolio containing exactly the same stocks as the
underlying index, and, as a result, bear a risk that the value of the securities
held will vary from the value of the index. Even if an index call writer could
assemble a stock portfolio that exactly reproduced the composition of the
underlying index, the writer still would not be fully covered from a risk
standpoint because of the "timing risk" inherent in writing index options. When
an index option is exercised, the amount of cash that the holder is entitled to
receive is determined by the difference between the exercise price and the
closing index level on the date when the option is exercised. As with other
kinds of options, the writer will not learn that it has been assigned until the
next business day, at the earliest. The time lag between exercise and notice of
assignment poses no risk for the writer of a covered call on a specific
underlying security, such as a common stock, because there the writer's
obligation is to deliver the underlying security, not to pay its value as of a
fixed time in the past. So long as the writer already owns the underlying
security, it can satisfy its settlement obligations by simply delivering it, and
the risk that its value may have declined since the exercise date is borne by
the exercising holder. In contrast, even if the writer of an index call holds
stocks that exactly match the composition of the underlying index, it will not
be able to satisfy its assignment obligations by delivering those stocks against
payment of the exercise price. Instead, it will be required to pay cash in an
amount based on the closing index value on the exercise date; and by the time it
learns that it has been assigned, the index may have declined, with a
corresponding decrease in the value of its stock portfolio. This "timing risk"
is an inherent limitation on the ability of index call writers to cover their
risk exposure by holding stock positions.
 
    A holder of an index option who exercises it before the closing index value
for that day is available runs the risk that the level of the underlying index
may subsequently change. If such a change causes the exercised option to fall
out-of-the-money, the exercising holder will be required to pay the difference
between the closing index value and the exercise price of the option (times the
applicable multiplier) to the assigned writer.
 
    If dissemination of the current level of an underlying index is interrupted,
or if trading is interrupted in stocks accounting for a substantial portion of
the value of an index, the trading of options on that index will ordinarily be
halted. If the trading of options on an underlying index is halted, an exchange
may impose restrictions prohibiting the exercise of such options.
 
    FUTURES CONTRACTS.  The Fund may purchase and sell interest rate and stock
index futures contracts ("futures contracts") that are traded on U.S. commodity
exchanges on such underlying securities as U.S. Treasury bonds, notes and bills
("interest rate" futures) and such indexes as the S&P 500 Index, the Moody's
Investment-Grade Corporate Bond Index and the New York Stock Exchange Composite
Index ("index" futures).
 
    As a futures contract purchaser, the Fund incurs an obligation to take
delivery of a specified amount of the obligation underlying the contract at a
specified time in the future for a specified price. As a seller of a futures
contract, the Fund incurs an obligation to deliver the specified amount of the
underlying obligation at a specified time in return for an agreed upon price.
 
    The Fund will purchase or sell interest rate futures contracts and bond
index futures contracts for the purpose of hedging its fixed-income portfolio
(or anticipated portfolio) securities against changes in prevailing interest
rates. If the Investment Manager anticipates that interest rates may rise and,
concomitantly, the price of fixed-income securities fall, the Fund may sell an
interest rate futures contract or a bond index futures contract. If declining
interest rates are anticipated, the Fund may purchase an interest rate futures
contract to protect against a potential increase in the price of U.S. Government
securities the Fund intends to purchase. Subsequently, appropriate fixed-income
securities may be purchased by the Fund in an orderly fashion; as securities are
purchased, corresponding futures positions would be terminated by offsetting
sales of contracts.
 
    The Fund will purchase or sell stock index futures contracts for the purpose
of hedging its equity portfolio (or anticipated portfolio) securities against
changes in their prices. If the Investment Manager
 
                                       22
<PAGE>
anticipates that the prices of stock held by the Fund may fall, the Fund may
sell a stock index futures contract. Conversely, if the Investment Manager
wishes to hedge against anticipated price rises in those stocks which the Fund
intends to purchase, the Fund may purchase stock index futures contracts. In
addition, interest rate and stock index futures contracts will be bought or sold
in order to close out a short or long position in a corresponding futures
contract.
 
    Although most interest rate futures contracts call for actual delivery or
acceptance of securities, the contracts usually are closed out before the
settlement date without the making or taking of delivery. Index futures
contracts provide for the delivery of an amount of cash equal to a specified
dollar amount times the difference between the stock index value at the open or
close of the last trading day of the contract and the futures contract price. A
futures contract sale is closed out by effecting a futures contract purchase for
the same aggregate amount of the specific type of equity security and the same
delivery date. If the sale price exceeds the offsetting purchase price, the
seller would be paid the difference and would realize a gain. If the offsetting
purchase price exceeds the sale price, the seller would pay the difference and
would realize a loss. Similarly, a futures contract purchase is closed out by
effecting a futures contract sale for the same aggregate amount of the specific
type of equity security and the same delivery date. If the offsetting sale price
exceeds the purchase price, the purchaser would realize a gain, whereas if the
purchase price exceeds the offsetting sale price, the purchaser would realize a
loss. There is no assurance that the Fund will be able to enter into a closing
transaction.
 
   
    INTEREST RATE FUTURES CONTRACTS.  When the Fund enters into an interest rate
futures contract, it is initially required to deposit with the Fund's Custodian,
in a segregated account in the name of the broker performing the transaction, an
"initial margin" of cash or U.S. Government securities or other liquid portfolio
securities equal to approximately 2% of the contract amount. Initial margin
requirements are established by the Exchanges on which futures contracts trade
and may, from time to time, change. In addition, brokers may establish margin
deposit requirements in excess of those required by the Exchanges.
    
 
    Initial margin in futures transactions is different from margin in
securities transactions in that initial margin does not involve the borrowing of
funds by a brokers' client but is, rather, a good faith deposit on the futures
contract which will be returned to the Fund upon the proper termination of the
futures contract. The margin deposits made are marked to market daily and the
Fund may be required to make subsequent deposits called "variation margin", with
the Fund's Custodian, in the account in the name of the broker, which are
reflective of price fluctuations in the futures contract. Currently, interest
rates futures contracts can be purchased on debt securities such as U.S.
Treasury Bills and Bonds, U.S. Treasury Notes with maturities between 6 1/2 and
10 years, GNMA Certificates and Bank Certificates of Deposit.
 
    INDEX FUTURES CONTRACTS.  The Fund may invest in index futures contracts. An
index futures contract sale creates an obligation by the Fund, as seller, to
deliver cash at a specified future time. An index futures contract purchase
would create an obligation by the Fund, as purchaser, to take delivery of cash
at a specified future time. Futures contracts on indexes do not require the
physical delivery of securities, but provide for a final cash settlement on the
expiration date which reflects accumulated profits and losses credited or
debited to each party's account.
 
    The Fund is required to maintain margin deposits with brokerage firms
through which it effects index futures contracts in a manner similar to that
described above for interest rate futures contracts. Currently, the initial
margin requirement is approximately 5% of the contract amount for index futures.
In addition, due to current industry practice, daily variations in gains and
losses on open contracts are required to be reflected in cash in the form of
variation margin payments. The Fund may be required to make additional margin
payments during the term of the contract.
 
    At any time prior to expiration of the futures contract, the Fund may elect
to close the position by taking an opposite position which will operate to
terminate the Fund's position in the futures contract. A final determination of
variation margin is then made, additional cash is required to be paid by or
released to the Fund and the Fund realizes a loss or a gain.
 
                                       23
<PAGE>
    Currently, index futures contracts can be purchased or sold with respect to,
among others, the Standard & Poor's 500 Stock Price Index and the Standard &
Poor's 100 Stock Price Index on the Chicago Mercantile Exchange, the New York
Stock Exchange Composite Index on the New York Futures Exchange, the Major
Market Index on the American Stock Exchange, the Moody's Investment-Grade
Corporate Bond Index on the Chicago Board of Trade and the Value Line Stock
Index on the Kansas City Board of Trade.
 
    OPTIONS ON FUTURES CONTRACTS.  The Fund may purchase and write call and put
options on futures contracts and enter into closing transactions with respect to
such options to terminate an existing position. An option on a futures contract
gives the purchaser the right (in return for the premium paid), and the writer
the obligation, to assume a position in a futures contract (a long position if
the option is a call and a short position if the option is a put) at a specified
exercise price at any time during the term of the option. Upon exercise of the
option, the delivery of the futures position by the writer of the option to the
holder of the option is accompanied by delivery of the accumulated balance in
the writer's futures margin account, which represents the amount by which the
market price of the futures contract at the time of exercise exceeds, in the
case of a call, or is less than, in the case of a put, the exercise price of the
option on the futures contract.
 
    The Fund will purchase and write options on futures contracts for identical
purposes to those set forth above for the purchase of a futures contract
(purchase of a call option or sale of a put option) and the sale of a futures
contract (purchase of a put option or sale of a call option), or to close out a
long or short position in futures contracts. If, for example, the Investment
Manager wished to protect against an increase in interest rates and the
resulting negative impact on the value of a portion of its fixed-income
portfolio, it might write a call option on an interest rate futures contract,
the underlying security of which correlates with the portion of the portfolio
the Investment Manager seeks to hedge. Any premiums received in the writing of
options on futures contracts may, of course, augment the total return of the
Fund and thereby provide a further hedge against losses resulting from price
declines in portions of the Fund's portfolio.
 
    The writer of an option on a futures contract is required to deposit initial
and variation margin pursuant to requirements similar to those applicable to
futures contracts. Premiums received from the writing of an option on a futures
contract are included in initial margin deposits.
 
    LIMITATIONS ON FUTURES CONTRACTS AND OPTIONS ON FUTURES.  The Fund may not
enter into futures contracts or purchase related options thereon if, immediately
thereafter, the amount committed to margin plus the amount paid for premiums for
unexpired options on futures contracts exceeds 5% of the value of the Fund's
total assets, after taking into account unrealized gains and unrealized losses
on such contracts it has entered into, provided, however, that in the case of an
option that is in-the-money (the exercise price of the call (put) option is less
(more) than the market price of the underlying security) at the time of
purchase, the in-the-money amount may be excluded in calculating the 5%.
However, there is no overall limitation on the percentage of the Fund's assets
which may be subject to a hedge position. In addition, in accordance with the
regulations of the Commodity Futures Trading Commission ("CFTC") under which the
Fund is exempted from registration as a commodity pool operator, the Fund may
only enter into futures contracts and options on futures contracts transactions
for purposes of hedging a part or all of its portfolio. If the CFTC changes its
regulations so that the Fund would be permitted to write options on futures
contracts for purposes other than hedging the Fund's investments without CFTC
registration, the Fund may engage in such transactions for those purposes.
Except as described above, there are no other limitations on the use of futures
and options thereon by the Fund.
 
    RISKS OF TRANSACTIONS IN FUTURES CONTRACTS AND RELATED OPTIONS.  The Fund
may sell a futures contract to protect against the decline in the value of
securities held by the Fund. However, it is possible that the futures market may
advance and the value of securities held in the portfolio of the Fund may
decline. If this occurred, the Fund would lose money on the futures contract and
also experience a
 
                                       24
<PAGE>
decline in value of its portfolio securities. However, while this could occur
for a very brief period or to a very small degree, over time the value of a
diversified portfolio will tend to move in the same direction as the futures
contracts.
 
    If the Fund purchases a futures contract to hedge against the increase in
value of securities it intends to buy, and the value of such securities
decreases, then the Fund may determine not to invest in the securities as
planned and will realize a loss on the futures contract that is not offset by a
reduction in the price of the securities.
 
   
    In addition, if the Fund holds a long position in a futures contract or has
sold a put option on a futures contract, it will hold cash, U.S. Government
securities or other liquid portfolio securities equal to the purchase price of
the contract or the exercise price of the put option (less the amount of initial
or variation margin on deposit) in a segregated account maintained for the Fund
by its Custodian. Alternatively, the Fund could cover its long position by
purchasing a put option on the same futures contract with an exercise price as
high or higher than the price of the contract held by the Fund.
    
 
   
    If the Fund maintains a short position in a futures contract or has sold a
call option on a futures contract, it will cover this position by holding, in a
segregated account maintained at its Custodian, cash, U.S. Government securities
or other liquid portfolio securities equal in value (when added to any initial
or variation margin on deposit) to the market value of the securities underlying
the futures contract or the exercise price of the option. Such a position may
also be covered by owning the securities underlying the futures contract (in the
case of a stock index futures contract a portfolio of securities substantially
replicating the relevant index), or by holding a call option permitting the Fund
to purchase the same contract at a price no higher than the price at which the
short position was established.
    
 
    Exchanges may limit the amount by which the price of futures contracts may
move on any day. If the price moves equal the daily limit on successive days,
then it may prove impossible to liquidate a futures position until the daily
limit moves have ceased.
 
    The extent to which the Fund may enter into transactions involving options
and futures contracts may be limited by the Internal Revenue Code's requirements
for qualification as a regulated investment company and the Fund's intention to
qualify as such. See "Dividends, Distributions and Taxes" in the Prospectus and
the Statement of Additional Information.
 
    There may exist an imperfect correlation between the price movements of
futures contracts purchased by the Fund and the movements in the prices of the
securities which are the subject of the hedge. If participants in the futures
market elect to close out their contracts through offsetting transactions rather
than meet margin deposit requirements, distortions in the normal relationship
between the debt securities and futures markets could result. Price distortions
could also result if investors in futures contracts opt to make or take delivery
of underlying securities rather than engage in closing transactions due to the
resultant reduction in the liquidity of the futures market. In addition, due to
the fact that, from the point of view of speculators, the deposit requirements
in the futures markets are less onerous than margin requirements in the cash
market, increased participation by speculators in the futures market could cause
temporary price distortions. Due to the possibility of price distortions in the
futures market and because of the imperfect correlation between movements in the
prices of securities and movements in the prices of futures contracts, a correct
forecast of interest rate trends by the Investment Manager may still not result
in a successful hedging transaction.
 
    There is no assurance that a liquid secondary market will exist for futures
contracts and related options in which the Fund may invest. In the event a
liquid market does not exist, it may not be possible to close out a futures
position, and in the event of adverse price movements, the Fund would continue
to be required to make daily cash payments of variation margin. In addition,
limitations imposed by an exchange or board of trade on which futures contracts
are traded may compel or prevent the Fund from closing out a contract which may
result in reduced gain or increased loss to the Fund. The absence of a liquid
market in futures contracts might cause the Fund to make or take delivery of the
underlying securities at a time when it may be disadvantageous to do so.
 
                                       25
<PAGE>
    Compared to the purchase or sale of futures contracts, the purchase of call
or put options on futures contracts involves less potential risk to the Fund
because the maximum amount at risk is the premium paid for the options (plus
transaction costs). However, there may be circumstances when the purchase of a
call or put option on a futures contract would result in a loss to the Fund
notwithstanding that the purchase or sale of a futures contract would not result
in a loss, as in the instance where there is no movement in the prices of the
futures contract or underlying securities.
 
    The Investment Manager has substantial experience in the use of the
investment techniques described above under the heading "Options and Futures
Transactions," which techniques require skills different from those needed to
select the portfolio securities underlying various options and futures
contracts.
 
PORTFOLIO MANAGEMENT
 
    The Fund's portfolio is actively managed by its Investment Manager with a
view to achieving the Fund's investment objective. In determining which
securities to purchase for the Fund or hold in the Fund's portfolio, the
Investment Manager will rely on information from various sources, including
research, analysis and appraisals of brokers and dealers, including DWR; the
views of Trustees of the Fund and others regarding economic developments and
interest rate trends; and the Investment Manager's own analysis of factors it
deems relevant. It is anticipated that the Fund's portfolio turnover rate will
not exceed 100%. A 100% turnover rate would occur, for example, if 100% of the
securities held in the Fund's portfolio (excluding all securities whose
maturities at acquisitions were one year or less) were sold and replaced within
one year.
 
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    In addition to the investment restrictions enumerated in the Prospectus, the
investment restrictions listed below have been adopted by the Fund as
fundamental policies, except as otherwise indicated. Under the Act, a
fundamental policy may not be changed without the vote of a majority of the
outstanding voting securities of the Fund, as defined in the Act. Such a
majority is defined as the lesser of (a) 67% or more of the shares present at a
meeting of shareholders, if the holders of 50% of the outstanding shares of the
Fund are present or represented by proxy or (b) more than 50% of the outstanding
shares of the Fund.
 
    The Fund may not:
 
         1. Invest in securities of any issuer if, to the knowledge of the Fund,
    any officer or trustee/ director of the Fund or of the Investment Manager
    owns more than 1/2 of 1% of the outstanding securities of such issuer, and
    such officers and trustees/directors who own more than 1/2 of 1% own in the
    aggregate more than 5% of the outstanding securities of such issuers.
 
         2. Purchase or sell real estate or interests therein, (including
    limited partnership interests) although the Fund may purchase securities of
    issuers which engage in real estate operations and securities secured by
    real estate or interests therein.
 
         3. Purchase oil, gas or other mineral leases, rights or royalty
    contracts or exploration or development programs, except that the Fund may
    invest in the securities of companies which operate, invest in, or sponsor
    such programs.
 
         4. Purchase securities of other investment companies, except in
    connection with a merger, consolidation, reorganization or aquisition of
    assets.
 
         5. Borrow money, except that the Fund may borrow from a bank for
    temporary or emergency purposes in amounts not exceeding 5% (taken at the
    lower of cost or current value) of its total assets (not including the
    amount borrowed).
 
                                       26
<PAGE>
         6. Pledge its assets or assign or otherwise encumber them except to
    secure borrowings effected within the limitations set forth in restriction
    (5). For the purpose of this restriction, collateral arrangements with
    respect to the writing of options and collateral arrangements with respect
    to initial or variation margin for futures are not deemed to be pledges of
    assets.
 
         7. Issue senior securities as defined in the Act except insofar as the
    Fund may be deemed to have issued a senior security by reason of borrowing
    money in accordance with restrictions described above.
 
         8. Make loans of money or securities, except: (a) by the purchase of
    publicly distributed debt obligations in which the Fund may invest
    consistent with its investment objective and policies; (b) by investment in
    repurchase agreements; or (c) by lending its portfolio securities.
 
         9. Make short sales of securities.
 
        10. Purchase securities on margin, except for such short-term loans as
    are necessary for the clearance of portfolio securities. The deposit or
    payment by the Fund of initial or variation margin in connection with
    futures contracts or related options thereon is not considered the purchase
    of a security on margin.
 
        11. Engage in the underwriting of securities, except insofar as the Fund
    may be deemed an underwriter under the Securities Act of 1933 in disposing
    of a portfolio security.
 
        12. Invest for the purpose of exercising control or management of any
    other issuer.
 
    In addition, the Fund, as a non-fundamental policy, will not invest in
warrants, although it may acquire warrants attached to other securities
purchased by the Fund.
 
    With respect to the investment restrictions listed above and those listed in
the Prospectus, if a percentage restriction is adhered to at the time of
investment, a later increase or decrease in percentage resulting from a change
in values of portfolio securities or amount of total or net assets will not be
considered a violation of any of the foregoing restrictions.
 
PORTFOLIO TRANSACTIONS AND BROKERAGE
- --------------------------------------------------------------------------------
 
    Subject to the general supervision of the Board of Trustees, the Investment
Manager is responsible for decisions to buy and sell securities for the Fund,
the selection of brokers and dealers to effect the transactions, and the
negotiation of brokerage commissions, if any. Purchases and sales of securities
on a stock exchange are effected through brokers who charge a commission for
their services. In the over-the-counter market, securities are generally traded
on a "net" basis with dealers acting as principal for their own accounts without
a stated commission, although the price of the security usually includes a
profit to the dealer. Securities may be purchased at times in underwriting
offerings where the price includes a fixed amount of compensation, generally
referred to as the underwriter's concession or discount. Options and futures
transactions will usually be effected through a broker and a commission will be
charged. On occasion, the Fund may also purchase certain money market
instruments directly from an issuer, in which case no commissions or discounts
are paid.
 
   
    The Investment Manager currently serves as investment manager to a number of
clients, including other investment companies, and may in the future act as
investment manager or adviser to others. It is the practice of the Investment
Manager to cause purchase and sale transactions to be allocated among the Fund
and others whose assets it manages in such manner as it deems equitable. In
making such allocations among the Fund and other client accounts, various
factors may be considered, including the respective investment objectives, the
relative size of portfolio holdings of the same or comparable securities, the
availability of cash for investment, the size of investment commitments
generally held and the opinions of the persons responsible for managing the
portfolios of the Fund and other client
    
 
                                       27
<PAGE>
   
accounts. In the case of certain initial and secondary public offerings, the
Investment Manager may utilize a pro-rata allocation process based on the size
of the Dean Witter Funds involved and the number of shares available from the
public offering.
    
 
   
    The aggregate amounts of brokerage commissions paid by the Fund during the
fiscal years ended December 31, 1994, 1995 and 1996 were $306,161, $196,300 and
$522,394, respectively.
    
 
    The policy of the Fund regarding purchases and sales of securities for its
portfolio is that primary consideration will be given to obtaining the most
favorable prices and efficient executions of transactions. Consistent with this
policy, when securities transactions are effected on a stock exchange, the
Fund's policy is to pay commissions which are considered fair and reasonable
without necessarily determining that the lowest possible commissions are paid in
all circumstances. The Fund believes that a requirement always to seek the
lowest possible commission cost could impede effective portfolio management and
preclude the Fund and the Investment Manager from obtaining a high quality of
brokerage and research services. In seeking to determine the reasonableness of
brokerage commissions paid in any transaction, the Investment Manager relies
upon its experience and knowledge regarding commissions generally charged by
various brokers and on its judgment in evaluating the brokerage and research
services received from the broker effecting the transaction. Such determinations
are necessarily subjective and imprecise, as in most cases an exact dollar value
for those services is not ascertainable.
 
   
    In seeking to implement the Fund's policies, the Investment Manager effects
transactions with those brokers and dealers who the Investment Manager believes
provide the most favorable prices and are capable of providing efficient
executions. If the Investment Manager believes such prices and executions are
obtainable from more than one broker or dealer, it may give consideration to
placing portfolio transactions with those brokers and dealers who also furnish
research and other services to the Fund or the Investment Manager. Such services
may include, but are not limited to, any one or more of the following:
information as to the availability of securities for purchase or sale;
statistical or factual information or opinions pertaining to investment; wire
services; and appraisals or evaluations of portfolio securities. During the
fiscal year ended December 31, 1996, the Fund directed the payment of $323,769
in brokerage commissions in connection with transactions in the aggregate amount
of $153,975,695 to brokers because of research services provided.
    
 
    The information and services received by the Investment Manager from brokers
and dealers may be of benefit to the Investment Manager in the management of
accounts of some of its other clients and may not in all cases benefit the Fund
directly. While the receipt of such information and services is useful in
varying degrees and would generally reduce the amount of research or services
otherwise performed by the Investment Manager and thereby reduce its expenses,
it is of indeterminable value and the management fee paid to the Investment
Manager is not reduced by any amount that may be attributable to the value of
such services.
 
   
    Pursuant to an order of the Securities and Exchange Commission, the Fund may
effect principal transactions in certain money market instruments with DWR. The
Fund will limit its transactions with DWR to U.S. Government and Government
Agency Securities, Bank Money Instruments (i.e., Certificates of Deposit and
Bankers' Acceptances) and Commercial Paper. Such transactions will be effected
with DWR only when the price available from DWR is better than that available
from other dealers. During its fiscal year ended December 31, 1996 the Fund did
not effect any principal transactions with DWR.
    
 
    Consistent with the policy described above, brokerage transactions in
securities listed on exchanges or admitted to unlisted trading privileges may be
effected through DWR. In order for DWR to effect any portfolio transactions for
the Fund, the commissions, fees or other remuneration received by DWR must be
reasonable and fair compared to the commissions, fees or other remuneration paid
to other brokers in connection with comparable transactions involving similar
securities being purchased or sold on an exchange during a comparable period of
time. This standard would allow DWR to receive no more than the remuneration
which would be expected to be received by an unaffiliated broker in a
commensurate arm's-length transaction. Furthermore, the Board of Trustees of the
Fund, including a
 
                                       28
<PAGE>
   
majority of the Trustees who are not "interested" persons of the Fund, as
defined in the Act, have adopted procedures which are reasonably designed to
provide that any commissions, fees or other remuneration paid to DWR are
consistent with the foregoing standard. During the fiscal years ended December
31, 1994, 1995 and 1996, the Fund paid a total of $65,065, $48,000 and $162,125,
respectively, in brokerage commissions to DWR. The Fund does not reduce the
management fee it pays to the Investment Manager by any amount of the brokerage
commissions it may pay to DWR. During the fiscal year ended December 31, 1996,
the brokerage commissions paid to DWR represented approximately 31.04% of the
total brokerage commissions paid by the Fund during the period and were paid on
account of transactions having an aggregate dollar value equal to approximately
38.41% of the aggregate dollar value of all portfolio transactions of the Fund
during the period for which commissions were paid.
    
 
THE DISTRIBUTOR
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, shares of the Fund are distributed by Dean
Witter Distributors Inc. (the "Distributor"). The Distributor has entered into a
selected dealer agreement with DWR, which through its own sales organization
sells shares of the Fund. In addition, the Distributor may enter into selected
dealer agreements with other selected broker-dealers. The Distributor, a
Delaware corporation, is a wholly-owned subsidiary of DWDC. The Trustees of the
Fund, including a majority of the Trustees who are not, and were not at the time
they voted, interested persons of the Fund, as defined in the Act (the
"Independent Trustees"), approved, at their meeting held on October 30, 1992, a
Distribution Agreement appointing the Distributor exclusive distributor of the
Fund's shares and providing for the Distributor to bear distribution expenses
not borne by the Fund. The Distribution Agreement took effect on June 30, 1993
upon the spin-off by Sears, Roebuck and Co. of its remaining shares of DWDC. By
its terms, the Distribution Agreement had an initial term ending April 30, 1994,
and provides that it will remain in effect from year to year thereafter if
approved by the Board. At their meeting held on April 17, 1996, the Trustees,
including all of the Independent Trustees, approved the continuation of the
Distribution Agreement until April 30, 1997.
    
 
    The Distributor bears all expenses it may incur in providing services under
the Distribution Agreement. Such expenses include the payment of commissions for
sales of the Fund's shares and incentive compensation to account executives. The
Distributor will also pay certain expenses in connection with the distribution
of the Fund's shares, including the costs of preparing, printing and
distributing advertising or promotional materials, and the costs of printing and
distributing prospectuses and supplements thereto used in connection with the
offering and sale of the Fund's shares. The Fund bears the costs of initial
typesetting, printing and distribution of prospectuses and supplements thereto
to shareholders. The Fund also will bear the costs of registering the Fund and
its shares under federal and state securities laws. The Fund and the Distributor
have agreed to indemnify each other against certain liabilities, including
liabilities under the Securities Act of 1933, as amended. Under the Distribution
Agreement, the Distributor uses its best efforts in rendering services to the
Fund, but in the absence of willful misfeasance, bad faith, gross negligence or
reckless disregard of its obligations, the Distributor is not liable to the Fund
or any of its shareholders for any error of judgment or mistake of law or for
any act or omission or for any losses sustained by the Fund or its shareholders.
 
PLAN OF DISTRIBUTION
 
    To compensate the Distributor for the services it provides and for the
expenses it bears under the Distribution Agreement, the Fund has adopted a Plan
of Distribution pursuant to Rule 12b-1 under the Act (the "Plan") pursuant to
which the Fund pays the Distributor compensation accrued daily and payable
monthly at the annual rate of 1.0% of the lesser of: (a) the average daily
aggregate gross sales of the Fund's shares since the inception of the Fund (not
including reinvestments of dividends or capital gains distributions), less the
average daily aggregate net asset value of the Fund's shares redeemed since the
Fund's inception upon which a contingent deferred sales charge has been imposed
or upon which such charge has been waived; or (b) the Fund's average daily net
assets. The Distributor also
 
                                       29
<PAGE>
   
receives the proceeds of contingent deferred sales charges imposed on certain
redemptions of shares, which are separate and apart from payments made pursuant
to the Plan (see "Redemptions and Repurchases--Contingent Deferred Sales Charge"
in the Prospectus). The Distributor has informed the Fund that it and/or DWR
received approximately $7,745,875, $5,644,000 and $5,371,000, none of which was
retained by the Distributor, in contingent deferred sales charges for the fiscal
years ended December 31, 1994, 1995 and 1996.
    
 
   
    Under its terms, the Plan had an initial term ending April 30, 1988, and
provides that it will remain in effect from year to year thereafter, provided
such continuance is approved annually by a vote of the Trustees, including a
majority of the Trustees who are not interested persons of the Fund (as defined
in the Act) and who have no direct or indirect financial interest in the
operation of the Plan (the "Independent 12b-1 Trustees"). The Plan was submitted
to and approved by the Trustees of the Fund, including a majority of the
Independent 12b-1 Trustees, at their meeting held on January 14, 1988 and
subsequently by the shareholders at the Meeting of Shareholders on June 28,
1989. Continuation of the Plan was most recently approved by the Trustees,
including a majority of the Independent 12b-1 Trustees, on April 17, 1996 at a
meeting called for the purpose of voting on such Plan. At that meeting the
Trustees and the Independent 12b-1 Trustees, after evaluating all the
information they deemed necessary to make an informed determination of whether
the Plan should be continued, approved the continuation of the Plan until April
30, 1997. In making their determination to continue the Plan, the Trustees
considered: (1) the Fund's experience under the Plan and whether such experience
indicates that the Plan is operating as anticipated; (2) the benefits the Fund
had obtained, was obtaining and would be likely to obtain under the Plan; and
(3) what services had been provided and were continuing to be provided under the
Plan by DWR to the Fund and its shareholders. Based upon their review, the
Trustees of the Fund, including each of the Independent 12b-1 Trustees,
determined that continuation of the Plan would be in the best interest of the
Fund and would have a reasonable likelihood of continuing to benefit the Fund
and its shareholders. In the Trustees' quarterly reviews of the Plan, they will
consider its continued appropriateness and the level of compensation provided
therein.
    
 
    At their meeting held on October 30, 1992, the Trustees of the Fund,
including all of the Independent 12b-1 Trustees, approved certain amendments to
the Plan which took effect in January, 1993 and were designed to reflect the
fact that upon the reorganization described above the share distribution
activities theretofore performed for the Fund by DWR were assumed by the
Distributor and that DWR's sales activities are now being performed pursuant to
the terms of a selected dealer agreement between the Distributor and DWR. The
amendments provide that payments under the Plan will be made to the Distributor
rather than to DWR as they had been before the amendment, and that the
Distributor in turn is authorized to make payments to DWR, its affiliates or
other selected broker-dealers (or direct that the Fund pay such entities
directly). The Distributor is also authorized to retain part of such fee as
compensation for its own distribution-related expenses. At their meeting held on
April 28, 1993, the Trustees, including a majority of the Independent 12b-1
Trustees, approved certain technical amendments to the Plan in connection with
amendments adopted by the National Association of Securities Dealers Inc. to its
Rules of Fair Practice. At their meeting held on October 26, 1995, the Trustees
of the Fund, including all of the Independent 12b-1 Trustees, approved an
amendment to the Plan to permit payments to be made under the Plan with respect
to certain distribution expenses incurred in connection with the distribution of
shares, including personal services to shareholders with respect to holdings of
such shares, of an investment company whose assets are acquired by the Fund in a
tax-free reorganization.
 
    The Distributor has informed the Fund that a portion of the fees payable by
the Fund each year pursuant to the Plan equal to 0.25% of the Fund's average
daily net assets is characterized as a "service fee" under the Rules of Fair
Practice of the National Association of Securities Dealers, Inc. (of which the
Distributor is a member). Such portion of the fee is a payment made for personal
service and/or the maintenance of shareholder accounts. The remaining portion of
the Plan fees payable by the Fund is characterized as an "asset-based sales
charge" as defined in the aforementioned Rules of Fair Practice.
 
    Under the Plan and as required by Rule 12b-1, the Trustees receive and
review promptly after the end of each fiscal quarter a written report provided
by the Distributor of the amounts expended by the
 
                                       30
<PAGE>
   
Distributor under the Plan and the purpose for which such expenditures were
made. The Fund accrued amounts payable to the Distributor under the Plan, during
the fiscal year ended December 31, 1996 of $29,551,784. This amount is equal to
payments required to be paid monthly by the Fund which were computed at the
annual rate of 1.0% of the average daily aggregate gross sales of the Fund's
shares since the inception of the Fund (not including reinvestments of dividends
or capital gains distributions), less the average daily aggregate net asset
value of the Fund's shares redeemed since the Fund's inception upon which a
contingent deferred sales charge has been imposed or waived. This amount is
treated by the Fund as an expense in the year it is accrued.
    
 
    The Plan was adopted in order to permit the implementation of the Fund's
method of distribution. Under this distribution method shares of the Fund are
sold without a sales load being deducted at the time of purchase, so that the
full amount of an investor's purchase payment will be invested in shares without
any deduction for sales charges. Shares of the Fund may be subject to a
contingent deferred sales charge, payable to the Distributor, if redeemed during
the six years after their purchase. DWR compensates its account executives by
paying them, from its own funds, commissions for the sale of the Fund's shares,
currently a gross sales credit of up to 5% of the amount sold and an annual
residual of up to .25 of 1% of the current value (not including reinvested
dividends or distributions) of the amount sold. The gross sales credit is a
charge which reflects commissions paid by DWR to its account executives and
DWR's Fund associated distribution-related expenses, including sales
compensation and overhead and other branch office distribution-related expenses
including: (a) the expenses of operating DWR's branch offices in connection with
the sale of Fund shares, including lease costs, the salaries and employee
benefits of operations and sales support personnel, utility costs,
communications costs and the costs of stationery and supplies, (b) the costs of
client sales seminars, (c) travel expenses of mutual fund sales coordinators to
promote the sale of Fund shares and (d) other expenses relating to branch
promotion of Fund sales. The distribution fee that the Distributor receives from
the Fund under the Plan, in effect, offsets distribution expenses incurred on
behalf of the Fund and opportunity costs, such as the gross sales credit and an
assumed interest charge thereon ("carrying charge"). In the Distributor's
reporting of the distribution expenses to the Fund, such assumed interest
(computed at the "broker's call rate") has been calculated on the gross sales
credit as it is reduced by amounts received by the Distributor under the Plan
and any contingent deferred sales charges received by the Distributor upon
redemption of shares of the Fund. No other interest charge is included as a
distribution expense in the Distributor's calculation of distribution costs for
this purpose. The broker's call rate is the interest rate charged to securities
brokers on loans secured by exchange-listed securities.
 
   
    The Fund paid 100% of the $29,551,784 accrued under the Plan for the fiscal
year ended December 31, 1996, to DWR, the distributor of the Fund's shares. DWR
estimates that it has spent, pursuant to the Plan, $295,479,298 on behalf of the
Fund since the inception of the Plan. It is estimated that this amount was spent
in approximately the following ways: (i) 1.35% ($3,984,440) -- advertising and
promotional expenses; (ii) 0.16% ($459,232) -- printing of prospectuses for
distribution to other than current shareholders; and (iii) 98.49% ($291,035,626)
- -- other expenses, including the gross sales credit and the carrying charge, of
which 10.07% ($29,304,177) represents carrying charges, 35.73% ($103,985,905)
represents commission credits to DWR branch offices for payments of commissions
to account executives and 54.20% ($157,745,544) represents overhead and other
branch office distribution-related expenses.
    
 
   
    At any given time, the expenses of distributing shares of the Fund which may
be more or less than the total of (i) the payments made by the Fund pursuant to
the Plan and (ii) the proceeds of contingent deferred sales charges paid by
investors upon redemption of shares. DWR has advised the Fund that such excess
amount, including the carrying charge designed to approximate the opportunity
costs incurred by DWR which arise from it having advanced monies without having
received the amount of any sales charges imposed at the time of sale of the
Fund's shares, totalled $79,638,749 as of December 31, 1996. Because there is no
requirement under the Plan that the Distributor be reimbursed for all its
expenses or any requirement that the Plan be continued from year to year, this
excess amount does not constitute a liability of the Fund. Although there is no
legal obligation for the Fund to pay distribution
    
 
                                       31
<PAGE>
expenses in excess of payments made to the Distributor under the Plan and the
proceeds of contingent deferred sales charges paid by investors upon redemption
of shares, if for any reason the Plan is terminated, the Trustees will consider
at that time the manner in which to treat such expenses. Any cumulative expenses
incurred, but not yet recovered through distribution fees or contingent deferred
sales charges, may or may not be recovered through future distribution fees or
contingent deferred sales charges.
 
    No interested person of the Fund, nor any trustee of the Fund who is not an
interested person of the Fund, as defined in the Act, had any direct or indirect
financial interest in the operation of the Plan except to the extent that the
Distributor, InterCapital, DWR or certain of their employees may be deemed to
have such an interest as a result of benefits derived from the successful
operation of the Plan or as a result of receiving a portion of the amounts
expended thereunder by the Fund.
 
    The Plan may not be amended to increase materially the amount to be spent
for the services described therein without approval of the shareholders of the
Fund, and all material amendments of the Plan must also be approved by the
Trustees in the manner described above. The Plan may be terminated at any time,
without payment of any penalty, by vote of a majority of the Independent 12b-1
Trustees or by a vote of a majority of the outstanding voting securities of the
Fund (as defined in the Act) on not more than thirty days' written notice to any
other party to the Plan. So long as the Plan is in effect, the election and
nomination of Independent Trustees shall be committed to the discretion of the
Independent Trustees.
 
DETERMINATION OF NET ASSET VALUE
- --------------------------------------------------------------------------------
 
    As stated in the Prospectus, short-term debt securities with remaining
maturities of 60 days or less at the time of purchase are valued at amortized
cost, unless the Trustees determine such does not reflect the securities' market
value, in which case these securities will be valued at their fair value as
determined by the Trustees. Other short-term debt securities will be valued on a
mark-to-market basis until such time as they reach a remaining maturity of 60
days, whereupon they will be valued at amortized cost using their value on the
61st day unless the Trustees determine such does not reflect the securities'
market value, in which case these securities will be valued at their fair value
as determined by the Trustees. Listed options on debt securities are valued at
the latest sale price on the exchange on which they are listed unless no sales
of such options have taken place that day, in which case they will be valued at
the mean between their latest bid and asked prices. Unlisted options on debt
securities and all options on equity securities are valued at the mean between
their latest bid and asked prices. Futures are valued at the latest sale price
on the commodities exchange on which they trade unless the Trustees determine
that such price does not reflect their market value, in which case they will be
valued at their fair value as determined by the Trustees. All other securities
and other assets are valued at their fair value as determined in good faith
under procedures established by and under the supervision of the Trustees.
 
    The net asset value per share of the Fund is determined once daily at 4:00
p.m., New York time (or, on days when the New York Stock Exchange closes prior
to 4:00 p.m., at such earlier time), on each day that the New York Stock
Exchange is open by taking the value of all assets of the Fund, subtracting its
liabilities, dividing by the number of shares outstanding and adjusting to the
nearest cent. The New York Stock Exchange currently observes the following
holidays: New Year's Day, Presidents' Day, Good Friday, Memorial Day,
Independence Day, Labor Day, Thanksgiving Day and Christmas Day.
 
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
    Upon the purchase of shares of the Fund, a Shareholder Investment Account is
opened for the investor on the books of the Fund and maintained by the Fund's
Transfer Agent (the "Transfer Agent"). This is an open account in which shares
owned by the investor are credited by the Transfer Agent in lieu of issuance of
a share certificate. If a share certificate is desired, it must be requested in
writing for each transaction. Certificates are issued only for full shares and
may be redeposited in the account at any
 
                                       32
<PAGE>
time. There is no charge to the investor for issuance of a certificate. Whenever
a shareholder instituted transaction takes place in the Shareholder Investment
Account, the shareholder will be mailed a confirmation of the transaction from
the Fund or from DWR or other selected broker-dealer.
 
    AUTOMATIC INVESTMENT OF DIVIDENDS AND DISTRIBUTIONS.  As stated in the
Prospectus, all income dividends and capital gains distributions are
automatically paid in full and fractional shares of the Fund, unless the
shareholder requests that they be paid in cash. Each purchase of shares of the
Fund is made upon the condition that the Transfer Agent is thereby automatically
appointed as agent of the investor to receive all dividends and capital gains
distributions on shares owned by the investor. Such dividends and distributions
will be paid, at the net asset value per share, in shares of the Fund (or in
cash if the shareholder so requests) as of the close of business on the record
date. At any time an investor may request the Transfer Agent, in writing, to
have subsequent dividends and/or capital gains distributions paid to him or her
in cash rather than shares. To assure sufficient time to process the change,
such request should be received by the Transfer Agent at least five business
days prior to the record date of the dividend or distribution. In the case of
recently purchased shares for which registration instructions have not been
received on the record date, cash payments will be made to DWR or other selected
broker-dealer, which will be forwarded to the shareholder, upon the receipt of
proper instructions.
 
    TARGETED DIVIDENDS.SM  In states where such is legally permissible,
shareholders may also have all income dividends and capital gains distributions
automatically invested in shares of an open-end Dean Witter Fund other than the
Dean Witter Utilities Fund. Such investment will be made as described above for
automatic investment in shares of the Fund, at the net asset value per share of
the selected Dean Witter Fund as of the close of business on the payment date of
the dividend or distribution and will begin to earn dividends, if any, in the
selected Dean Witter Fund the next business day. To participate in the Targeted
Dividends program, shareholders should contact their DWR or other selected
broker-dealer account executive or the Transfer Agent. Shareholders of Dean
Witter Utilities Fund must be shareholders of the Dean Witter Fund targeted to
receive investments from dividends at the time they enter the Targeted Dividends
program. Investors should review the prospectus of the targeted Dean Witter Fund
before entering the program.
 
    EASYINVEST.SM  Shareholders may subscribe to EasyInvest, an automatic
purchase plan which provides for any amount from $100 to $5,000 to be
transferred automatically from a checking or savings account, on a semi-monthly,
monthly or quarterly basis, to the Transfer Agent for investment in shares of
the Fund. Shares purchased through EasyInvest will be added to the shareholder's
existing account at the net asset value calculated the same business day the
transfer of funds is effected. For further information or to subscribe to
EasyInvst, shareholders should contact their DWR or other selected dealer
account executive or the Transfer Agent.
 
    INVESTMENT OF DISTRIBUTIONS RECEIVED IN CASH.  As discussed in the
Prospectus, any shareholder who receives a cash payment representing a dividend
or distribution may invest such dividend or distribution at net asset value by
returning the check or the proceeds to the Transfer Agent within 30 days after
the payment date. If the shareholder returns the proceeds of a dividend or
distribution, such funds must be accompanied by a signed statement indicating
that the proceeds constitute a dividend or distribution to be invested. Such
investment will be made at the net asset value per share next determined after
receipt of the proceeds by the Transfer Agent.
 
    SYSTEMATIC WITHDRAWAL PLAN.  As discussed in the Prospectus, a withdrawal
plan is available for shareholders who own or purchase shares of the Fund having
a minimum value of $10,000 based upon the then current net asset value. The
Withdrawal Plan provides for monthly or quarterly (March, June, September and
December) checks in any dollar amount, not less than $25, or in any whole
percentage of the account balance, on an annualized basis.
 
    Withdrawal Plan payments should not be considered as dividends, yields or
income. If periodic withdrawal plan payments continuously exceed net investment
income and net capital gains, the shareholder's original investment will be
correspondingly reduced and ultimately exhausted.
 
                                       33
<PAGE>
    Each withdrawal constitutes a redemption of shares and any gain or loss
realized must be recognized for Federal income tax purposes. Although the
shareholder may make additional investments of $2,500 or more under the
Withdrawal Plan, withdrawals made concurrently with purchases of additional
shares may be inadvisable because of the contingent deferred sales charge
applicable to the redemption of shares purchased during the preceding six years
(see "Redemptions and Repurchases-- Contingent Deferred Sales Charge").
 
    The Transfer Agent acts as agent for the shareholder in tendering to the
Fund for redemption sufficient full and fractional shares to provide the amount
of the periodic withdrawal payment designated in the application. The shares
will be redeemed at their net asset value determined on the tenth or
twenty-fifth day (or next following business day) of the relevant month or
quarter and normally a check for the proceeds will be mailed by the Transfer
Agent, or amounts credited to a shareholder's DWR brokerage account, within five
business days after the date of redemption. The Systematic Withdrawal Plan may
be terminated at any time by the Transfer Agent.
 
    Any shareholder who wishes to have payments under the Withdrawal Plan made
to a third party or sent to an address other than the one listed on the account
must send complete written instructions to the Transfer Agent to enroll in the
Withdrawal Plan. The shareholder's signature on such instructions must be
guaranteed by an eligible guarantor acceptable to the Transfer Agent
(shareholders should contact the Transfer Agent for a determination as to
whether a particular institution is such an eligible guarantor). A shareholder
may, at any time, change the amount and interval of withdrawal payments and the
address to which checks are mailed may be changed by written notification to the
Transfer Agent. In addition, the party and/or the address to which checks are
mailed may be changed by written notification to the Transfer Agent, with
signature guarantees required in the manner described above. The shareholder may
also terminate the Withdrawal Plan at any time by written notice to the Transfer
Agent. In the event of such termination, the account will be continued as a
Shareholder Investment Account. The shareholder may also redeem all or part of
the shares held in the Systematic Withdrawal Plan account (see "Redemptions and
Repurchases") at any time.
 
    TAX-SHELTERED RETIREMENT PLANS.  Retirement plans are available for use by
corporations, the self-employed, Individual Retirement Accounts and Custodial
Accounts under Section 403(b)(7) of the Internal Revenue Code. Adoption of such
plans should be on advice of legal counsel or tax adviser.
 
    For further information regarding plan administration, custodial fees and
other details, investors should contact the Distributor or the Fund.
 
    DIRECT INVESTMENTS THROUGH TRANSFER AGENT.  As discussed in the Prospectus,
a shareholder may make additional investments in Fund shares at any time by
sending a check in any amount, not less than $100, payable to Dean Witter
Utilities Fund, directly to the Fund's Transfer Agent. Such amounts will be
applied to the purchase of Fund shares at the net asset value per share next
computed after receipt of the check or purchase payment by the Transfer Agent.
The shares so purchased will be credited to the investor's account.
 
EXCHANGE PRIVILEGE
 
    As discussed in the Prospectus, the Fund makes available to its shareholders
an Exchange Privilege whereby shareholders of the Fund may exchange their shares
for shares of other Dean Witter Funds sold with a contingent deferred sales
charge ("CDSC funds"), and for shares of Dean Witter Short-Term U.S. Treasury
Trust, Dean Witter Limited Term Municipal Trust, Dean Witter Short-Term Bond
Fund, Dean Witter Balanced Growth Fund, Dean Witter Balanced Income Fund, Dean
Witter Intermediate Term U.S. Treasury Trust and five Dean Witter Funds which
are money market funds (the foregoing eleven non-CDSC Funds are hereinafter
referred to as "Exchange Funds"). Exchanges may be made after the shares of the
Fund acquired by purchase (not by exchange or dividend reinvestment) have been
held for thirty days. There is no waiting period for exchanges of shares
acquired by exchange or dividend reinvestment. An exchange will be treated for
federal income tax purposes the same as a repurchase or redemption of shares, on
which the shareholder may realize a capital gain or loss.
 
                                       34
<PAGE>
    Any new account established through the Exchange Privilege will have the
same registration and cash dividend or dividend reinvestment plan as the present
account, unless the Transfer Agent receives written notification to the
contrary. For telephone exchanges, the exact registration of the existing
account and the account number must be provided.
 
    Any shares held in certificate form cannot be exchanged but must be
forwarded to the Transfer Agent and deposited into the shareholder's account
before being eligible for exchange. (Certificates mailed in for deposit should
not be endorsed.)
 
    As described below and in the Prospectus under the captions "Exchange
Privilege" and "Contingent Deferred Sales Charge," a contingent deferred sales
charge ("CDSC") may be imposed upon a redemption, depending on a number of
factors, including the number of years from the time of purchase until the time
of redemption or exchange ("holding period"). When shares of the Fund or any
other CDSC fund are exchanged for shares of an Exchange Fund, the exchange is
executed at no charge to the shareholder, without the imposition of the CDSC at
the time of the exchange. During the period of time the shareholder remains in
the Exchange Fund (calculated from the last day of the month in which the
Exchange Fund shares were acquired), the investment period or "year since
purchase payment made" is frozen. When shares are redeemed out of the Exchange
Fund they will be subject to a CDSC which would be based upon the period of time
the shareholder held shares in a CDSC fund. However, in the case of shares of
the Fund exchanged into an Exchange Fund, upon a redemption of shares which
results in a CDSC being imposed, a credit (not to exceed the amount of the CDSC)
will be given in an amount equal to the Exchange Fund 12b-1 distribution fees,
if any, incurred on or after that date which are attributable to those shares.
Shareholders acquiring shares of an Exchange Fund pursuant to this exchange
privilege may exchange those shares back into a CDSC fund from the Exchange
Fund, with no CDSC being imposed on such exchange. The investment period
previously frozen when shares were first exchanged for shares of the Exchange
Fund resumes on the last day of the month in which shares of a CDSC fund are
reacquired. A CDSC is imposed only upon an ultimate redemption, based upon the
time (calculated as described above) the shareholder was invested in a CDSC
fund.
 
    In addition, shares of the Fund may be acquired in exchange for shares of
Dean Witter Funds sold with a front-end sales charge ("front-end sales charge
funds"), but shares of the Fund, however acquired, may not be exchanged for
shares of front-end sales charge funds. Shares of a CDSC fund acquired in
exchange for shares of a front-end sales charge fund (or in exchange for shares
of other Dean Witter Funds for which shares of a front-end sales charge fund
have been exchanged) are not subject to any CDSC upon their redemption.
 
    When shares initially purchased in a CDSC fund are exchanged for shares of
another CDSC fund, or for shares of an Exchange Fund, the date of purchase of
the shares of the fund exchanged into, for purposes of the CDSC upon redemption,
will be the last day of the month in which the shares being exchanged were
originally purchased. In allocating the purchase payments between funds for
purposes of the CDSC, the amount which represents the current net asset value of
shares at the time of the exchange which were (i) purchased more than three or
six years (depending on the CDSC schedule applicable to the shares) prior to the
exchange, (ii) originally acquired through reinvestment of dividends or
distributions and (iii) acquired in exchange for shares of front-end sales
charge funds, or for shares of other Dean Witter Funds for which shares of
front-end sales charge funds have been exchanged (all such shares called "Free
Shares"), will be exchanged first. Shares of Dean Witter American Value Fund
acquired prior to April 30, 1984, shares of Dean Witter Dividend Growth
Securities Inc. and Dean Witter Natural Resource Development Securities Inc.
acquired prior to July 2, 1984, and shares of Dean Witter Strategist Fund
acquired prior to November 8, 1989, are also considered Free Shares and will be
the first Free Shares to be exchanged. After an exchange, all dividends earned
on shares in an Exchange Fund will be considered Free Shares. If the exchanged
amount exceeds the value of such Free Shares, an exchange is made, on a
block-by-block basis, of non-Free Shares held for the longest period of time
(except that if shares held for identical periods of time but subject to
different CDSC schedules are held in the same Exchange Privilege account, the
shares of that block that are subject to a lower CDSC rate
 
                                       35
<PAGE>
will be exchanged prior to the shares of that block that are subject to a higher
CDSC rate). Shares equal to any appreciation in the value of non-Free Shares
exchanged will be treated as Free Shares, and the amount of the purchase
payments for the non-Free Shares of the fund exchanged into will be equal to the
lesser of (a) the purchase payments for, or (b) the current net asset value of,
the exchanged non-Free Shares. If an exchange between funds would result in
exchange of only part of a particular block of non-Free Shares, then shares
equal to any appreciation in the value of the block (up to the amount of the
exchange) will be treated as Free Shares and exchanged first, and the purchase
payment for that block will be allocated on a pro rata basis between the
non-Free Shares of that block to be retained and the non-Free Shares to be
exchanged. The prorated amount of such purchase payment attributable to the
retained non-Free Shares will remain as the purchase payment for such shares,
and the amount of purchase payment for the exchanged non-Free Shares will be
equal to the lesser of (a) the prorated amount of the purchase payment for, or
(b) the current net asset value of, those exchanged non-Free Shares. Based upon
the procedures described in the Prospectus under the caption "Contingent
Deferred Sales Charge", any applicable CDSC will be imposed upon the ultimate
redemption of shares of any fund, regardless of the number of exchanges since
those shares were originally purchased.
 
    With respect to the redemption or repurchase of shares of the Fund, the
application of proceeds to the purchase of new shares in the Fund or any other
of the funds and the general administration of the Exchange Privilege, the
Transfer Agent acts as agent for the Distributor and for the shareholder's
selected broker-dealer, if any, in the performance of such functions. With
respect to exchanges, redemptions or repurchases, the Transfer Agent shall be
liable for its own negligence and not for the default or negligence of its
correspondents or for losses in transit. The Fund shall not be liable for any
default or negligence of the Transfer Agent, the Distributor or any selected
broker-dealer.
 
    The Distributor and any selected broker-dealer have authorized and appointed
the Transfer Agent to act as their agent in connection with the application of
proceeds of any redemption of Fund shares to the purchase of shares of any other
fund and the general administration of the Exchange Privilege. No commission or
discounts will be paid to the Distributor or any selected broker-dealer for any
transactions pursuant to this Exchange Privilege.
 
   
    Exchanges are subject to the minimum investment requirement and any other
conditions imposed by each fund. (The minimum initial investment is $5,000 for
Dean Witter Liquid Asset Fund Inc., Dean Witter Tax-Free Daily Income Trust,
Dean Witter California Tax-Free Daily Income Trust and Dean Witter New York
Municipal Money Market Trust although those funds may, at their discretion,
accept initial investments of as low as $1,000. The minimum initial investment
is $10,000 for Dean Witter Short-Term U.S. Treasury Trust, although that fund,
in its discretion, may accept initial purchases of as low as $5,000. The minimum
initial investment is $5,000 for Dean Witter Special Value Fund. The minimum
initial investment for all other Dean Witter Funds for which the Exchange
Privilege is available is $1,000.) Upon exchange into an Exchange Fund, the
shares of that fund will be held in a special Exchange Privilege Account
separately from accounts of those shareholders who have acquired their shares
directly from that fund. As a result, certain services normally available to
shareholders of those funds, including the check writing feature, will not be
available for funds held in that account.
    
 
    The Fund and each of the other Dean Witter Funds may limit the number of
times this Exchange Privilege may be exercised by any investor within a
specified period of time. Also, the Exchange Privilege may be terminated or
revised at any time by the Fund and/or any of the Dean Witter Funds for which
shares of the Fund have been exchanged, upon such notice as may be required by
applicable regulatory agencies (presently sixty days' prior written notice for
termination or material revision), provided that six months' prior written
notice of termination will be given to the shareholders who hold shares of
Exchange Funds pursuant to the Exchange Privilege, and provided further that the
Exchange Privilege may be terminated or materially revised without notice at
times (a) when the New York Stock Exchange is closed for other than customary
weekends and holidays, (b) when trading on that Exchange is restricted, (c) when
an emergency exists as a result of which disposal by the Fund of securities
owned by it is not reasonably practicable or it is not reasonably practicable
for the Fund fairly to determine the value
 
                                       36
<PAGE>
of its net assets, (d) during any other period when the Securities and Exchange
Commission by order so permits (provided that applicable rules and regulations
of the Securities and Exchange Commission shall govern as to whether the
conditions prescribed in (b) or (c) exist) or (e) if the Fund would be unable to
invest amounts effectively in accordance with its investment objective, policies
and restrictions.
 
    For further information regarding the Exchange Privilege, shareholders
should contact their DWR or other selected broker-dealer account executive or
the Transfer Agent.
 
REDEMPTIONS AND REPURCHASES
- --------------------------------------------------------------------------------
 
    REDEMPTION.  As stated in the Prospectus, shares of the Fund can be redeemed
for cash at any time at the net asset value per share next determined; however,
such redemption proceeds may be reduced by the amount of any applicable
contingent deferred sales charges (see below). If shares are held in a
shareholder's account without a share certificate, a written request for
redemption to the Fund's Transfer Agent at P.O. Box 983, Jersey City, NJ 07303
is required. If certificates are held by the shareholders, the shares may be
redeemed by surrendering the certificates with a written request for redemption.
The share certificate, or an accompanying stock power, and the request for
redemption, must be signed by the shareholder or shareholders exactly as the
shares are registered. Each request for redemption, whether or not accompanied
by a share certificate, must be sent to the Fund's Transfer Agent, which will
redeem the shares at their net asset value next computed (see "Purchase of Fund
Shares") after it receives the request, and certificate, if any, in good order.
Any redemption request received after such computation will be redeemed at the
next determined net asset value. The term "good order" means that the share
certificate, if any, and request for redemption are properly signed, accompanied
by any documentation required by the Transfer Agent, and bear signature
guarantees when required by the Fund or the Transfer Agent. If redemption is
requested by a corporation, partnership, trust or fiduciary, the Transfer Agent
may require that written evidence of authority acceptable to the Transfer Agent
be submitted before such request is accepted.
 
   
    Whether certificates are held by the shareholder or shares are held in a
shareholder's account, if the proceeds are to be paid to any person other than
the record owner, or if the proceeds are to be paid to a corporation (other than
the Distributor or a selected broker-dealer for the account of the shareholder),
partnership, trust or fiduciary, or sent to the shareholder at an address other
than the registered address, signatures must be guaranteed by an eligible
guarantor acceptable to the Transfer Agent (shareholders should contact the
Transfer Agent for a determination as to whether a particular institution is
such an eligible guarantor). A stock power may be obtained from any dealer or
commercial bank. The Fund may change the signature guarantee requirements from
time to time upon notice to shareholders, which may be a means of a supplement
to the prospectus or a new prospectus.
    
 
    CONTINGENT DEFERRED SALES CHARGE.  As stated in the Prospectus, a contingent
deferred sales charge ("CDSC") will be imposed on any redemption by an investor
if after such redemption the current value of the investor's shares of the Fund
is less than the dollar amount of all payments by the shareholder for the
purchase of Fund shares during the preceding six years. However, no CDSC will be
imposed to the extent that the net asset value of the shares redeemed does not
exceed (a) the current net asset value of shares purchased more than six years
prior to the redemption, plus (b) the current net asset value of shares
purchased through reinvestment of dividends or distributions of the Fund or
another Dean Witter Fund (see "Shareholder Services--Targeted Dividends"), plus
(c) the current net asset value of shares acquired in exchange for (i) shares of
Dean Witter front-end sales charge funds, or (ii) shares of other Dean Witter
Funds for which shares of front-end sales charge funds have been exchanged (see
"Shareholder Services--Exchange Privilege"), plus (d) increases in the net asset
value of the investor's shares above the total amount of payments for the
purchase of Fund shares made during the preceding six years. The CDSC will be
paid to the Distributor. In addition, no CDSC will be
 
                                       37
<PAGE>
imposed on redemptions of shares which were purchased by the employee benefit
plans established by DWR and SPS Transaction Services, Inc. (an affiliate of
DWR) for their employees as qualified under Section 401(k) of the Internal
Revenue Code.
 
    In determining the applicability of a CDSC to each redemption, the amount
which represents an increase in the net asset value of the investor's shares
above the amount of the total payments for the purchase of shares within the
last six years will be redeemed first. In the event the redemption amount
exceeds such increase in value, the next portion of the amount redeemed will be
the amount which represents the net asset value of the investor's shares
purchased more than six years prior to the redemption and/or shares purchased
through reinvestment of dividends or distributions and/or shares acquired in
exchange for shares of Dean Witter front-end sales charge funds, or for shares
of other Dean Witter Funds for which shares of front-end sales charge funds have
been exchanged. Any portion of the amount redeemed which exceeds an amount which
represents both such increase in value and the value of shares purchased more
than six years prior to the redemption and/or shares purchased through
reinvestment of dividends or distributions and/or shares acquired in the
above-described exchanges will be subject to a CDSC.
 
    The amount of the CDSC, if any, will vary depending on the number of years
from the time of payment for the purchase of Fund shares until the time of
redemption of such shares. For purposes of determining the number of years from
the time of any payment for the purchase of shares, all payments made during a
month will be aggregated and deemed to have been made on the last day of the
month. The following table sets forth the rates of the CDSC:
 
<TABLE>
<CAPTION>
                                                                                                CONTINGENT DEFERRED
                                         YEAR SINCE                                                SALES CHARGE
                                          PURCHASE                                              AS A PERCENTAGE OF
                                        PAYMENT MADE                                              AMOUNT REDEEMED
- --------------------------------------------------------------------------------------------  -----------------------
<S>                                                                                           <C>
First.......................................................................................              5.0%
Second......................................................................................              4.0%
Third.......................................................................................              3.0%
Fourth......................................................................................              2.0%
Fifth.......................................................................................              2.0%
Sixth.......................................................................................              1.0%
Seventh and thereafter......................................................................           None
</TABLE>
 
    In determining the rate of the CDSC, it will be assumed that a redemption is
made of shares held by the investor for the longest period of time within the
applicable six-year period. This will result in any such CDSC being imposed at
the lowest possible rate. Accordingly, shareholders may redeem, without
incurring any CDSC, amounts equal to any net increase in the value of their
shares above the amount of their purchase payments made within the past six
years and amounts equal to the current value of shares purchased more than six
years prior to the redemption and shares purchased through reinvestment of
dividends or distributions or acquired in exchange for shares of Dean Witter
front-end sales charge funds, or for shares of other Dean Witter Funds for which
shares of front-end sales charge funds have been exchanged. The CDSC will be
imposed, in accordance with the table shown above, on any redemptions within six
years of purchase which are in excess of these amounts and which redemptions are
not (a) requested within one year of death or initial determination of
disability of a shareholder, or (b) made pursuant to certain taxable
distributions from retirement plans or retirement accounts, as described above.
 
    PAYMENT FOR SHARES REDEEMED OR REPURCHASED.  As discussed in the Prospectus,
payment for shares presented for repurchase or redemption will be made by check
within seven days after receipt by the Transfer Agent of the certificate and/or
written request in good order. The term good order means that the share
certificate, if any, and request for redemption are properly signed, accompanied
by any documentation required by the Transfer Agent, and bear signature
guarantees when required by the Fund or the Transfer Agent. Such payment may be
postponed or the right of redemption suspended at times (a) when the New York
Stock Exchange is closed for other than customary weekends and holidays, (b)
when trading on that Exchange is restricted, (c) when an emergency exists as a
result of
 
                                       38
<PAGE>
which disposal by the Fund of securities owned by it is not reasonably
practicable or it is not reasonably practicable for the Fund to fairly determine
the value of its net assets, or (d) during any other period when the Securities
and Exchange Commission by order so permits; provided that applicable rules and
regulations of the Securities and Exchange Commission shall govern as to whether
the conditions prescribed in (b) or (c) exist. If the shares to be redeemed have
recently been purchased by check, payment of the redemption proceeds may be
delayed for the minimum time needed to verify that the check used for investment
has been honored (not more than fifteen days from the time of receipt of the
check by the Transfer Agent). Shareholders maintaining margin accounts with DWR
or another selected dealer are referred to their account executive regarding
restrictions on redemption of shares of the Fund pledged in the margin account.
 
    TRANSFERS OF SHARES.  In the event a shareholder requests a transfer of any
shares to a new registration, such shares will be transferred without sales
charge at the time of transfer. With regard to the status of shares which are
either subject to the contingent deferred sales charge or free of such charge
(and with regard to the length of time shares subject to the charge have been
held), any transfer involving less than all of the shares in account will be
made on a pro-rata basis (that is, by transferring shares in the same proportion
that the transferred shares bear to the total shares in the account immediately
prior to the transfer). The transferred shares will continue to be subject to
any applicable contingent deferred sales charge as if they had not been so
transferred.
 
    REINSTATEMENT PRIVILEGE.  As discussed in the Prospectus, a shareholder who
has had his or her shares redeemed or repurchased and has not previously
exercised this reinstatement privilege may within thirty days after the date of
redemption or repurchase reinstate any portion or all of the proceeds of such
redemption or repurchase in shares of the Fund at the net asset value next
determined after a reinstatement request, together with the proceeds, is
received by the Transfer Agent.
 
    Exercise of the reinstatement privilege will not affect the federal income
tax treatment of any gain or loss realized upon the redemption or repurchase,
except that if the redemption or repurchase resulted in a loss and reinstatement
is made in shares of the Fund, some or all of the loss, depending on the amount
reinstated, will not be allowed as a deduction for federal income tax purposes,
but will be applied to adjust the cost basis of the shares acquired upon
reinstatement.
 
    INVOLUNTARY REDEMPTION.  As discussed in the Prospectus, the Fund reserves
the right, on 60 days' notice, to redeem, at their net asset value, the shares
of any shareholder whose shares due to redemptions by the shareholder have a
value of less than $100 or such lesser amount as may be fixed by the Trustees.
However, before the Fund redeems such shares and sends the proceeds to the
shareholder, it will notify the shareholder that the value of the shares is less
than $100 and allow him or her 60 days to make an additional investment in an
amount which will increase the value of his or her account to $100 or more
before the redemption is processed. No CDSC will be imposed on any involuntary
redemption.
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
    The Fund will determine either to distribute or to retain all or part of any
net long-term capital gains in any year for reinvestment. If any such gains are
retained, the Fund will pay federal income tax thereon, and shareholders will be
able to claim their share of the tax paid by the Fund as a credit against their
individual federal income tax.
 
    Because the Fund intends to distribute all of its net investment income and
capital gains to shareholders and otherwise continue to qualify as a regulated
investment company under Subchapter M of the Internal Revenue Code, it is not
expected that the Fund will be required to pay any federal income tax.
Shareholders will normally have to pay federal income taxes, and any state
income taxes, on the dividends and distributions they receive from the Fund.
Such dividends and distributions, to the extent that they are derived from the
net investment income or short-term capital gains, are taxable to the
shareholder as ordinary income regardless of whether the shareholder receives
such payments in additional shares or in cash. Any dividends declared in the
last quarter of any year which are paid in the
 
                                       39
<PAGE>
following year prior to February 1 will be deemed received by the shareholder in
the prior year. Dividend payments will be eligible for the federal dividends
received deduction available to the Fund's corporate shareholders only to the
extent the aggregate dividends received by the Fund would be eligible for the
deduction if the Fund were the shareholder claiming the dividends received
deduction. In this regard, a 46-day holding period generally must be met.
 
    Gains or losses on the Fund's transactions, if any, in listed options on
non-equity securities, futures and options on futures generally are treated as
60% long-term and 40% short-term. When the Fund engages in options and futures
transactions, various tax regulations applicable to the Fund may have the effect
of causing the Fund to recognize a gain or loss for tax purposes before that
gain or loss is realized, or to defer recognition of a realized loss for tax
purposes. Recognition, for tax purposes, of an unrealized loss may result in a
lesser amount of the Fund's realized net short-term gains being available for
distribution.
 
    Gains or losses on sales of securities by the Fund will be long-term capital
gains or losses if the securities have a tax holding period of more than twelve
months. Gains or losses on the sale of securities with a tax holding period of
twelve months or less will be short-term gains or losses.
 
    One of the requirements for the Fund to remain qualified as a regulated
investment company is that less than 30% of its gross income be derived from
gains from the sale or other disposition of securities held for less than three
months. Accordingly, the Fund may be restricted in the writing of options on
securities held for less than three months, in the writing of options which
expire in less than three months, and in effecting closing transactions with
respect to call or put options which have been written or purchased less than
three months prior to such transactions. The Fund may also be restricted in its
ability to engage in transactions involving futures contracts.
 
    Distributions of net long-term capital gains, if any, are taxable to
shareholders as long-term capital gains regardless of how long a shareholder has
held the Fund's shares and regardless of whether the distribution is received in
additional shares or in cash. Capital gains distributions are not eligible for
the dividends received deduction.
 
    As stated under "Investment Practices and Policies", the Fund may invest up
to 35% of its portfolio in securities other than in the utilities industry,
including U.S. Government securities. Under current federal tax law, the Fund
will receive net investment income in the form of interest by virtue of holding
Treasury bills, notes and bonds, and will recognize income attributable to it
from holding zero coupon Treasury securities. Current federal tax law requires
that a holder (such as the Fund) of a zero coupon security accrue a portion of
the discount at which the security was purchased as income each year even though
the Fund receives no interest payment in cash on the security during the year.
As an investment company, the Fund must pay out substantially all of its net
investment income each year. Accordingly, the Fund, to the extent it invests in
zero coupon Treasury securities, may be required to pay out as an income
distribution each year an amount which is greater than the total amount of cash
receipts of interest the Fund actually received. Such distributions will be made
from the available cash of the Fund or by liquidation of portfolio securities if
necessary. If a distribution of cash necessitates the liquidation of portfolio
securities, the Investment Manager will select which securities to sell. The
Fund may realize a gain or loss from such sales. In the event the Fund realizes
net capital gains from such transactions, its shareholders may receive a larger
capital gain distribution, if any, than they would in the absence of such
transactions.
 
    Any dividend or capital gains distribution received by a shareholder from
any investment company will have the effect of reducing the net asset value of
the shareholder's stock in that company by the exact amount of the dividend or
capital gains distribution. Furthermore, capital gains distributions and
dividends are subject to federal income taxes. If the net asset value of the
shares should be reduced below a shareholder's cost as a result of the payment
of dividends or the distribution of realized net long-term capital gains, such
payment or distribution would be in part a return of the shareholder's
investment to the extent of such reduction below the shareholder's cost, but
nonetheless would be fully taxable. Therefore, an investor should consider the
tax implications of purchasing Fund shares immediately prior to a dividend or
distribution record date.
 
                                       40
<PAGE>
    The amount of dividends paid by the Fund which may qualify for the dividends
received deduction is limited to the aggregate amount of qualifying dividends
which the Fund derives from its portfolio investments which the Fund has held
for a minimum period, usually 46 days. Any distributions made by the Fund will
not be eligible for the dividends received deduction with respect to shares
which are held by the shareholder for 45 days or less. Any long-term capital
gain distributions will also not be eligible for the dividends received
deduction. The ability to take the dividends received deduction will also be
limited to a Fund shareholder which incurs or continues indebtedness which is
directly attributable to its investment in the Fund.
 
    At the end of the year, shareholders will be sent full information on their
dividends and capital gains distributions for tax purposes, including
information as to the portion taxable as ordinary income, the portion taxable as
long-term capital gains and the portion eligible for the dividends received
deduction. To avoid being subject to a 31% federal backup withholding tax on
taxable dividends, capital gains distributions and the proceeds of redemptions
and repurchases, shareholders' taxpayer identification numbers must be furnished
and certified as to their accuracy.
 
    Shareholders are urged to consult their attorneys or tax advisers regarding
specific questions as to federal, state or local taxes.
 
PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------
 
   
    As discussed in the Prospectus, from time to time the Fund may quote its
"yield" and/or its "total return" in advertisements and sales literature. Yield
is calculated for any 30-day period as follows: the amount of interest and/or
dividend income for each security in the Fund's portfolio is determined in
accordance with regulatory requirements; the total for the entire portfolio
constitutes the Fund's gross income for the period. Expenses accrued during the
period are subtracted to arrive at "net investment income". The resulting amount
is divided by the product of the net asset value per share on the last day of
the period multiplied by the average number of Fund shares outstanding during
the period that were entitled to dividends. This amount is added to 1 and raised
to the sixth power. 1 is then subtracted from the result and the difference is
multiplied by 2 to arrive at the annualized yield. For the 30-day period ended
December 31, 1996, the Fund's yield, calculated pursuant to the formula
described above, was 3.39%.
    
 
   
    The Fund's "average annual total return" represents an annualization of the
Fund's total return over a particular period and is computed by finding the
annual percentage rate which will result in the ending redeemable value of a
hypothetical $1,000 investment made at the beginning of a one, five or ten year
period, or for the period from the date of commencement of the Fund's
operations, if shorter than any of the foregoing. The ending redeemable value is
reduced by any contingent deferred sales charge at the end of the one, five or
ten year or other period. For the purpose of this calculation, it is assumed
that all dividends and distributions are reinvested. The formula for computing
the average annual total return involves a percentage obtained by dividing the
ending redeemable value by the amount of the initial investment, taking a root
of the quotient (where the root is equivalent to the number of years in the
period) and subtracting 1 from the result. The average annual total return of
the Fund for the year ended December 31, 1996, for the five years ended December
31, 1996 and for the life of the Fund were -0.01%, 8.01% and 10.48%,
respectively.
    
 
   
    In addition to the foregoing, the Fund may advertise its total return over
different periods of time by means of aggregate, average, year-by-year or other
types of total return figures. Such calculations may or may not reflect the
deduction of the contingent deferred sales charge which, if reflected, would
reduce the performance quoted. For example, the average annual total return of
the Fund may be calculated in the manner described above, but without deduction
for any applicable contingent deferred sales charge. Based on this calculation,
the average annual total return of the Fund for the year ended December 31,
1996, for the five years ended December 31, 1996 and for the life of the Fund
were 4.99%, 8.31% and 10.48%, respectively.
    
 
                                       41
<PAGE>
   
    In addition, the Fund may compute its aggregate total return for specified
periods by determining the aggregate percentage rate which will result in the
ending value of a hypothetical $1,000 investment made at the beginning of the
period. For the purpose of this calculation, it is assumed that all dividends
and distributions are reinvested. The formula for computing aggregate total
return involves a percentage obtained by dividing the ending value (without the
reduction for any contingent deferred sales charge) by the initial $1,000
investment and subtracting 1 from the result. Based on the foregoing
calculation, the Fund's total return for the year ended December 31, 1996, for
the five years ended December 31, 1996 and for the life of the Fund were 4.99%,
49.02% and 137.40%, respectively.
    
 
   
    The Fund may also advertise the growth of hypothetical investments of
$10,000, $50,000 and $100,000 in shares of the Fund by adding 1 to the Fund's
aggregate total return to date (expressed as a decimal and without taking into
account the effect of any applicable CDSC) and multiplying by $10,000, $50,000
or $100,000, as the case may be. Investments of $10,000, $50,000 and $100,000 in
the Fund at inception would have grown to $23,740, $118,700 and $237,400,
respectively, at December 31, 1996.
    
 
    The Fund from time to time may also advertise its performance relative to
certain performance rankings and indexes complied by independent organizations.
 
DESCRIPTION OF SHARES
- --------------------------------------------------------------------------------
 
    As discussed in the Prospectus, the shareholders of the Fund are entitled to
a full vote for each full share held. All of the Trustees, except for Messrs.
Bozic, Purcell and Schroeder have been elected by the shareholders of the Fund,
most recently at a Special Shareholders Meeting held on January 12, 1993.
Messrs. Bozic, Purcell and Schroeder were elected by the other Trustees of the
Fund on April 8, 1994. The Trustees themselves have the power to alter the
number and the terms of office of the Trustees, and they may at any time
lengthen or shorten their own terms or make their terms of unlimited duration
and appoint their own successors, provided that always at least a majority of
the Trustees has been elected by the shareholders of the Fund. Under certain
circumstances, the Trustees may be removed by action of the Trustees. The
shareholders also have the right, under certain circumstances, to remove the
Trustees. The voting rights of shareholders are not cumulative, so that holders
of more than 50 percent of the shares voting can, if they choose, elect all
Trustees being selected, while the holders of the remaining shares would be
unable to elect any Trustees.
 
   
    The Declaration of Trust permits the Trustees to authorize the creation of
additional series of shares (the proceeds of which would be invested in
separate, independently managed portfolios) and additional classes of shares
within any series (which would be used to distinguish among the rights of
different categories of shareholders, as might be required by future regulations
or other unforeseen circumstances). The Trustees have not presently authorized
any such additional series or classes of shares.
    
 
    The Declaration of Trust provides that no Trustee, officer, employee or
agent of the Fund is liable to the Fund or to a shareholder, nor is any Trustee,
officer, employee or agent liable to any third persons in connection with the
affairs of the Fund, except as such liability may arise from his own bad faith,
willful misfeasance, gross negligence, or reckless disregard of his duties. It
also provides that all third persons shall look solely to the Fund's property
for satisfaction of claims arising in connection with the affairs of the Fund.
With the exceptions stated, the Declaration of Trust provides that a Trustee,
officer, employee or agent is entitled to be indemnified against all liabilities
in connection with the affairs of the Fund.
 
    The Fund is authorized to issue an unlimited number of shares of beneficial
interest.
 
    The Fund shall be of unlimited duration subject to the provisions in the
Declaration of Trust concerning termination by action of the shareholders or the
Trustees.
 
                                       42
<PAGE>
CUSTODIAN AND TRANSFER AGENT
- --------------------------------------------------------------------------------
 
    The Bank of New York, 90 Washington Street, New York, New York 10286 is the
Custodian of the Fund's assets. Any of the Fund's cash balances with the
Custodian in excess of $100,000 are unprotected by federal deposit insurance.
Such balances may, at times, be substantial.
 
   
    Dean Witter Trust Company, Harborside Financial Center, Plaza Two, Jersey
City, New Jersey 07311 is the Transfer Agent of the Fund's shares and Dividend
Disbursing Agent for payment of dividends and distributions on Fund shares and
Agent for shareholders under various investment plans described herein. Dean
Witter Trust Company is an affiliate of Dean Witter InterCapital Inc., the
Fund's Investment Manager and Dean Witter Distributors Inc., the Fund's
Distributor. As Transfer Agent and Dividend Disbursing Agent, Dean Witter Trust
Company's responsibilities include maintaining shareholder accounts, disbursing
cash dividends and reinvesting dividends, processing account registration
changes, handling purchase and redemption transactions, mailing prospectuses and
reports, mailing and tabulating proxies, processing share certificate
transactions, and maintaining shareholder records and lists. For these services
Dean Witter Trust Company receives a per shareholder account fee from the Fund.
    
 
INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
 
    Price Waterhouse LLP serves as the independent accountants of the Fund. The
independent accountants are responsible for auditing the annual financial
statements of the Fund.
 
REPORTS TO SHAREHOLDERS
- --------------------------------------------------------------------------------
 
    The Fund will send to shareholders, at least semi-annually, reports showing
the Fund's portfolio and other information. An annual report containing
financial statements audited by independent accountants will be sent to
shareholders each year.
 
    The Fund's fiscal year ends on December 31. The financial statements of the
Fund must be audited at least once a year by independent accountants whose
selection is made annually by the Fund's Board of Trustees.
 
LEGAL COUNSEL
- --------------------------------------------------------------------------------
 
   
    Barry Fink, Esq., who is an officer and the General Counsel of the
Investment Manager, is an officer and the General Counsel of the Fund.
    
 
EXPERTS
- --------------------------------------------------------------------------------
 
   
    The financial statements of the Fund for the year ended December 31, 1996
included in this Statement of Additional Information and incorporated by
reference in the Prospectus have been so included and incorporated in reliance
on the report of Price Waterhouse LLP, independent accountants, given on the
authority of said firm as experts in auditing and accounting.
    
 
REGISTRATION STATEMENT
- --------------------------------------------------------------------------------
 
    This Statement of Additional Information and the Prospectus do not contain
all of the information set forth in the Registration Statement the Fund has
filed with the Securities and Exchange Commission. The complete Registration
Statement may be obtained from the Securities and Exchange Commission upon
payment of the fee prescribed by the rules and regulations of the Commission.
 
                                       43
<PAGE>
DEAN WITTER UTILITIES FUND
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                                                  VALUE
- -----------------------------------------------------------------------------------------------------
<C>          <S>                                                                    <C>
             COMMON STOCKS (84.6%)
             NATURAL GAS (12.1%)
   680,000   AGL Resources, Inc...................................................  $      14,365,000
   385,000   Burlington Resources, Inc............................................         19,394,375
   475,000   Coastal Corp.........................................................         23,215,625
   350,000   Consolidated Natural Gas Co..........................................         19,337,500
   620,335   El Paso Natural Gas Co...............................................         31,326,918
   935,000   Enron Corp...........................................................         40,321,875
   475,000   ENSERCH Corp.........................................................         10,925,000
   200,000   Louisiana Land & Exploration Co. (The)...............................         10,725,000
   235,000   New Jersey Resources Corp............................................          6,873,750
   690,000   PanEnergy Corp.......................................................         31,050,000
   445,000   Sonat, Inc...........................................................         22,917,500
   595,000   Tenneco, Inc.........................................................         26,849,375
   285,000   Washington Gas Light Co..............................................          6,448,125
 1,575,000   Williams Companies, Inc..............................................         59,062,500
                                                                                    -----------------
                                                                                          322,812,543
                                                                                    -----------------
             TELECOMMUNICATIONS (29.1%)
   300,000   360 DEG. Communications Co.*.........................................          6,937,500
   740,000   Airtouch Communications, Inc.*.......................................         18,685,000
 1,170,000   Alltel Corp..........................................................         36,708,750
   985,000   Ameritech Corp.......................................................         59,715,625
   670,000   AT&T Corp............................................................         29,145,000
   630,000   BCE, Inc. (Canada)...................................................         30,082,500
   430,000   Bell Atlantic Corp...................................................         27,842,500
   915,000   BellSouth Corp.......................................................         36,943,125
   250,000   British Telecommunications PLC (ADR) (United Kingdom)................         17,156,250
   245,000   Cable & Wireless PLC (ADR) (United Kingdom)..........................          6,033,125
   580,000   Century Telephone Enterprises, Inc...................................         17,907,500
    95,000   Compania de Telefonos de Chile S.A. (ADR) (Chile)....................          9,606,875
   775,000   Comsat Corp..........................................................         19,084,375
   695,000   Ericsson (L.M.) Telephone Co. (Class B) (ADR) (Sweden)...............         20,936,875
   680,000   Frontier Corp........................................................         15,385,000
   975,000   GTE Corp.............................................................         44,362,500
   995,000   Hong Kong Telecommunications, Ltd. (ADR) (Hong Kong).................         16,168,750
   244,405   Lucent Technologies, Inc.............................................         11,303,731
 1,345,000   MCI Communications Corp..............................................         43,880,625
 1,005,000   NYNEX Corp...........................................................         48,365,625
   375,000   Pacific Telesis Group................................................         13,781,250
   215,000   Philippine Long Distance Telephone Co. (ADR)
               (Philippines)......................................................         10,965,000
   960,000   SBC Communications, Inc..............................................         49,680,000
   875,000   Sprint Corp..........................................................         34,890,625
   340,000   Telecommunications Corp. New Zealand, Ltd. (ADR)
               (New Zealand)......................................................         27,540,000
   360,000   Telefonica de Argentina S.A. (ADR) (Argentina).......................          9,315,000
   620,000   Telefonica Espana S.A. (ADR) (Spain).................................         42,935,000
   505,000   Telefonos de Mexico S.A. de C.V. (Series L) (ADR)
               (Mexico)...........................................................         16,665,000
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       44
<PAGE>
DEAN WITTER UTILITIES FUND
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                                                  VALUE
- -----------------------------------------------------------------------------------------------------
<C>          <S>                                                                    <C>
   755,000   U.S. West Communications Group.......................................  $      24,348,750
   730,000   U.S. West Media Group*...............................................         13,505,000
   270,000   Vodafone Group PLC (ADR) (United Kingdom)............................         11,171,250
   347,000   WorldCom, Inc.*......................................................          9,022,000
                                                                                    -----------------
                                                                                          780,070,106
                                                                                    -----------------
             UTILITIES - ELECTRIC (43.4%)
 1,250,000   Allegheny Power Systems, Inc.........................................         37,968,750
   670,000   American Electric Power Co...........................................         27,553,750
   800,000   Baltimore Gas & Electric Co..........................................         21,400,000
   550,000   Boston Edison Co.....................................................         14,781,250
   240,000   Carolina Power & Light Co............................................          8,760,000
   875,000   Central & South West Corp............................................         22,421,875
 1,310,470   CINergy Corp.........................................................         43,736,936
   640,000   CMS Energy Corp......................................................         21,520,000
   685,000   Consolidated Edison Co. of New York, Inc.............................         20,036,250
   880,000   Dominion Resources, Inc..............................................         33,880,000
 1,105,000   DPL, Inc.............................................................         27,072,500
   550,000   DQE, Inc.............................................................         15,950,000
 1,020,000   DTE Energy Co........................................................         33,022,500
   500,000   Duke Power Co........................................................         23,125,000
 1,585,000   Edison International.................................................         31,501,875
   385,000   Empresa Nacional de Electricidad S.A. (ADR) (Spain)..................         26,950,000
   210,000   Enersis S.A. (ADR) (Chile)...........................................          5,827,500
   980,000   Enova Corp...........................................................         22,295,000
   725,000   Entergy Corp.........................................................         20,118,750
   600,000   Florida Progress Corp................................................         19,350,000
   735,000   FPL Group, Inc.......................................................         33,810,000
 1,070,000   General Public Utilities Corp........................................         35,978,750
 1,270,000   Houston Industries, Inc..............................................         28,733,750
   920,000   Illinova Corp........................................................         25,300,000
   915,000   Kansas City Power & Light Co.........................................         26,077,500
   570,000   Long Island Lighting Co..............................................         12,611,250
   380,000   Montana Power Co.....................................................          8,122,500
   805,000   New England Electric System..........................................         28,074,375
   590,000   New York State Electric & Gas Corp...................................         12,758,750
   860,000   NIPSCO Industries, Inc...............................................         34,077,500
   290,000   Northern States Power Co.............................................         13,303,750
   960,000   Ohio Edison Co.......................................................         21,840,000
   490,000   Pacific Gas & Electric Co............................................         10,290,000
   980,000   PacifiCorp...........................................................         20,090,000
   925,000   Peco Energy Co.......................................................         23,356,250
   920,000   Pinnacle West Capital Corp...........................................         29,210,000
   460,000   Portland General Corp................................................         19,320,000
   440,000   Potomac Electric Power Co............................................         11,330,000
   745,000   PP&L Resources, Inc..................................................         17,135,000
   865,000   Public Service Company of Colorado...................................         33,626,875
   890,000   Public Service Enterprise Group, Inc.................................         24,252,500
   190,000   Puget Sound Power & Light Co.........................................          4,560,000
   415,000   Rochester Gas & Electric Corp........................................          7,936,875
   770,000   SCANA Corp...........................................................         20,597,500
 1,535,000   Southern Co..........................................................         34,729,375
   315,000   Southwestern Public Service Co.......................................         11,143,125
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       45
<PAGE>
DEAN WITTER UTILITIES FUND
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                                                  VALUE
- -----------------------------------------------------------------------------------------------------
<C>          <S>                                                                    <C>
   425,000   Teco Energy, Inc.....................................................  $      10,253,125
   935,000   Texas Utilities Co...................................................         38,101,250
   945,000   Unicom Corp..........................................................         25,633,125
   890,000   Union Electric Co....................................................         34,265,000
   525,000   Utilicorp United, Inc................................................         14,175,000
   700,000   Washington Water Power Co............................................         13,037,500
                                                                                    -----------------
                                                                                        1,161,002,561
                                                                                    -----------------
             TOTAL COMMON STOCKS
             (IDENTIFIED COST $1,627,090,605).....................................      2,263,885,210
                                                                                    -----------------
</TABLE>
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                   COUPON     MATURITY
 THOUSANDS                                                    RATE        DATE
- ------------                                               ----------  ----------
<C>           <S>                                          <C>         <C>         <C>
              CORPORATE BONDS (14.2%)
              NATURAL GAS (3.4%)
 $    5,000   ANR Pipeline Co............................       9.625%   11/01/21          6,168,600
      7,000   Arkla, Inc.................................      10.00     11/15/19          7,781,200
     10,000   Coastal Corp...............................       9.625    05/15/12         11,969,400
      5,000   Coastal Corp...............................       7.75     10/15/35          5,061,550
      5,000   Colorado Interstate Gas Co.................      10.00     06/15/05          5,949,850
      5,000   Columbia Gas System, Inc...................       7.62     11/28/25          4,874,850
      7,600   Enserch Exploration Inc. - 144A**..........       7.54     01/02/09          7,491,168
      5,000   Mitchell Energy/Development Corp...........       9.25     01/15/02          5,378,950
      5,000   Northern Illinois Gas Co...................       9.00     07/01/19          5,296,350
      5,000   Northwest Pipeline Corp....................      10.65     11/15/18          5,333,400
      2,000   Northwest Pipeline Corp....................       9.00     08/01/22          2,172,400
      5,750   Southwest Gas Corp.........................       8.00     08/01/26          6,026,460
      5,000   Transco Energy Co..........................       9.875    06/15/20          6,275,450
      1,550   Transcontinental Gas Pipeline Corp.........       9.125    02/01/17          1,651,835
      8,000   Williams Companies, Inc....................       9.375    11/15/21          9,606,320
                                                                                   -----------------
                                                                                          91,037,783
                                                                                   -----------------
              TELECOMMUNICATIONS (3.5%)
     10,000   BellSouth Telecommunications, Inc..........       7.625    05/15/35          9,993,600
      5,000   BellSouth Telecommunications, Inc..........       7.00     12/01/95          4,808,050
     10,000   Century Telephone Enterprises, Inc.........       8.25     05/01/24         10,309,100
      5,000   Century Telephone Enterprises, Inc.........       7.20     12/01/25          4,858,300
      5,000   General Telephone & Electric Corp..........      10.25     11/01/20          5,699,700
      5,000   GTE North Inc..............................       7.625    05/15/26          5,032,100
      5,000   MCI Communications Corp....................       7.75     03/15/24          5,062,350
      6,000   MCI Communications Corp....................       7.75     03/23/25          6,075,600
     20,000   Southwestern Bell Telephone Co.............       7.20     10/15/26         19,242,400
     10,000   Sprint Corp................................       9.25     04/15/22         12,100,800
      5,000   Telephone & Data Systems, Inc..............      10.00     01/15/21          5,734,800
      5,000   Telephone & Data Systems, Inc..............       9.58     11/19/21          5,500,000
                                                                                   -----------------
                                                                                          94,416,800
                                                                                   -----------------
              UTILITIES - ELECTRIC (7.2%)
      1,499   AEP Generating Co..........................       9.81     12/07/22          1,814,716
      5,000   Arizona Public Service Co..................       7.25     08/01/23          4,725,650
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       46
<PAGE>
DEAN WITTER UTILITIES FUND
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1996, CONTINUED
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                  COUPON     MATURITY
 THOUSANDS                                                   RATE        DATE           VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                           <C>        <C>         <C>
 $   6,000   Chugach Electric Co.........................      9.14 %   03/15/22  $       6,722,460
     5,000   Citizens Utilities Co.......................      7.45     07/01/35          5,032,250
     5,000   Consumer Power Co...........................      7.375    09/15/23          4,704,150
     4,985   CTC Mansfield Funding Corp..................     10.25     03/30/03          5,109,625
     5,000   CTC Mansfield Funding Corp..................     11.125    09/30/16          5,325,000
    14,783   DQU II Funding Corp.........................      8.70     06/01/16         15,603,161
    10,000   Duke Power Co...............................      8.75     03/01/21         10,316,800
    10,000   Gulf States Utilities Co....................      8.94     01/01/22         10,202,600
     7,000   Indiantown Cogeneration LP..................      9.26     12/15/10          7,676,200
     3,000   Long Island Lighting Co.....................      8.90     07/15/19          3,077,010
     5,100   Long Island Lighting Co.....................      8.20     03/15/23          5,050,785
     2,931   Mobile Energy SVC LLC.......................      8.665    01/01/17          3,016,486
    10,100   National Cooperative Services Corp..........      9.375    01/02/11         10,531,169
     5,250   National Rural Utilities Cooperative
               Finance Corp..............................      9.00     09/01/21          5,655,982
     1,984   New York State Electric & Gas Corp..........      9.875    02/01/20          2,099,409
     8,826   Niagara Mohawk Power Corp...................      8.77     01/01/18          8,394,762
     5,000   Niagara Mohawk Power Corp...................      9.50     03/01/21          5,004,000
     5,000   Pacific Gas & Electric Co...................      7.25     08/01/26          4,800,900
     5,000   Pacific Gas Transmission Co.................      7.80     06/01/25          4,977,350
    10,250   Public Service Company of Colorado..........      8.75     03/01/22         10,960,120
    10,000   Selkirk Cogen Funding Corp. - 144A**........      8.98     06/26/12         10,243,100
     4,000   South Carolina Electric Co..................      8.875    08/15/21          4,323,800
       442   Systems Energy Resources, Inc...............     11.375    09/01/16            473,055
    10,000   Texas Utilities Electric Co.................      8.875    02/01/22         10,657,800
     5,000   Texas Utilities Electric Co.................      7.375    10/01/25          4,779,450
     5,000   Union Electric Co...........................      8.75     12/01/21          5,351,200
     5,000   Utilicorp United, Inc.......................      9.00     11/15/21          5,332,400
     5,000   Virginia Electric Power Co..................      8.625    10/01/24          5,381,150
     5,000   Wisconsin Power & Light Co..................      8.60     03/15/27          5,321,550
                                                                                  -----------------
                                                                                        192,664,090
                                                                                  -----------------
             UTILITIES - WATER (0.1%)
     3,000   Pennsylvania American
               Water Co. - 144A**........................      7.80     09/01/26          3,135,840
                                                                                  -----------------
             TOTAL CORPORATE BONDS
             (IDENTIFIED COST $361,498,604).....................................        381,254,513
                                                                                  -----------------
 
<CAPTION>
 NUMBER OF
  SHARES
- -----------
<C>          <S>                                           <C>        <C>         <C>
             PREFERRED STOCKS (0.1%)
             UTILITIES - ELECTRIC
    40,000   Atlantic Capital I $2.0625...........................................            995,000
    27,965   Entergy Gulf States Utilities $9.96..................................          2,880,395
                                                                                    -----------------
             TOTAL PREFERRED STOCKS
             (IDENTIFIED COST $3,937,443).........................................          3,875,395
                                                                                    -----------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       47
<PAGE>
DEAN WITTER UTILITIES FUND
PORTFOLIO OF INVESTMENTS DECEMBER 31, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                   COUPON     MATURITY
 THOUSANDS                                                    RATE        DATE           VALUE
- ----------------------------------------------------------------------------------------------------
              SHORT-TERM INVESTMENTS (0.8%)
<C>           <S>                                          <C>         <C>         <C>
              U.S. GOVERNMENT AGENCY (a) (0.7%)
 $   18,000   Federal Home Loan Banks (Amortized Cost
                $17,996,750).............................        6.50%   01/02/97  $      17,996,750
                                                                                   -----------------
              REPURCHASE AGREEMENT (0.1%)
      2,839   The Bank of New York (dated 12/31/96;
                proceeds $2,839,750; collateralized by
                $2,596,989 U.S. Treasury Bond 6.50% due
                11/15/26 valued at $2,570,151 and
                $329,876 U.S. Treasury Note 5.625% due
                11/30/00 valued at $325,530) (Identified
                Cost $2,838,902).........................       5.375    01/02/97          2,838,902
                                                                                   -----------------
              TOTAL SHORT-TERM INVESTMENTS
              (IDENTIFIED COST $20,835,652)......................................         20,835,652
                                                                                   -----------------
TOTAL INVESTMENTS
(IDENTIFIED COST $2,013,362,304) (B)......       99.7%  2,669,850,770
OTHER ASSETS IN EXCESS OF LIABILITIES.....        0.3       7,094,211
                                                -----   -------------
NET ASSETS................................      100.0%  $2,676,944,981
                                                -----   -------------
                                                -----   -------------
<FN>
- ---------------------
ADR  American Depository Receipt.
 *   Non-income producing security.
**   Resale is restricted to qualified institutional investors.
(a)  Security was purchased on a discount basis. The interest rate shown has
     been adjusted to reflect a money market equivalent yield.
(b)  The aggregate cost for federal income tax purposes approximates identified
     cost. The aggregate gross unrealized appreciation is $689,320,315 and the
     aggregate gross unrealized depreciation is $32,831,849, resulting in net
     unrealized appreciation of $656,488,466.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       48
<PAGE>
DEAN WITTER UTILITIES FUND
FINANCIAL STATEMENTS
 
STATEMENT OF ASSETS AND LIABILITIES
DECEMBER 31, 1996
 
<TABLE>
<S>                                                           <C>
ASSETS:
Investments in securities, at value
  (identified cost $2,013,362,304)..........................  $2,669,850,770
Receivable for:
    Dividends...............................................       8,129,452
    Interest................................................       7,876,534
    Investments sold........................................       2,137,007
    Shares of beneficial interest sold......................         727,519
    Foreign withholding taxes reclaimed.....................         104,097
Prepaid expenses and other assets...........................          34,978
                                                              --------------
     TOTAL ASSETS...........................................   2,688,860,357
                                                              --------------
LIABILITIES:
Payable for:
    Shares of beneficial interest repurchased...............       5,927,658
    Plan of distribution fee................................       2,373,056
    Distributions to shareholders...........................       1,968,513
    Investment management fee...............................       1,269,807
Accrued expenses and other payables.........................         376,342
                                                              --------------
     TOTAL LIABILITIES......................................      11,915,376
                                                              --------------
NET ASSETS:
Paid-in-capital.............................................   2,002,828,386
Net unrealized appreciation.................................     656,488,466
Accumulated undistributed net investment income.............         764,341
Accumulated undistributed net realized gain.................      16,863,788
                                                              --------------
     NET ASSETS.............................................  $2,676,944,981
                                                              --------------
                                                              --------------
NET ASSET VALUE PER SHARE,
  175,844,684 SHARES OUTSTANDING (UNLIMITED SHARES
  AUTHORIZED OF $.01 PAR VALUE).............................
                                                                      $15.22
                                                              --------------
                                                              --------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       49
<PAGE>
DEAN WITTER UTILITIES FUND
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF OPERATIONS
FOR THE YEAR ENDED DECEMBER 31, 1996
 
<TABLE>
<S>                                                           <C>
NET INVESTMENT INCOME:
INCOME
Dividends (net of $1,209,250 foreign withholding tax).......  $106,841,277
Interest....................................................    48,906,955
                                                              ------------
     TOTAL INCOME...........................................   155,748,232
                                                              ------------
EXPENSES
Plan of distribution fee....................................    29,551,784
Investment management fee...................................    15,787,095
Transfer agent fees and expenses............................     2,711,507
Custodian fees..............................................       160,551
Shareholder reports and notices.............................       155,574
Registration fees...........................................        58,867
Professional fees...........................................        49,363
Insurance fees..............................................        34,065
Trustees' fees and expenses.................................        15,376
Other.......................................................        42,598
                                                              ------------
     TOTAL EXPENSES.........................................    48,566,780
                                                              ------------
     NET INVESTMENT INCOME..................................   107,181,452
                                                              ------------
NET REALIZED AND UNREALIZED GAIN (LOSS):
Net realized gain...........................................    38,088,040
Net change in unrealized appreciation.......................   (21,800,001)
                                                              ------------
     NET GAIN...............................................    16,288,039
                                                              ------------
NET INCREASE................................................  $123,469,491
                                                              ------------
                                                              ------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       50
<PAGE>
DEAN WITTER UTILITIES FUND
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF CHANGES IN NET ASSETS
 
<TABLE>
<CAPTION>
                                                                                  FOR THE YEAR
                                                                FOR THE YEAR          ENDED
                                                                    ENDED         DECEMBER 31,
                                                              DECEMBER 31, 1996       1995
- -----------------------------------------------------------------------------------------------
<S>                                                           <C>                 <C>
INCREASE (DECREASE) IN NET ASSETS:
OPERATIONS:
Net investment income.......................................   $    107,181,452   $ 126,947,362
Net realized gain...........................................         38,088,040      23,150,960
Net change in unrealized appreciation.......................        (21,800,001)    608,846,502
                                                              -----------------   -------------
     NET INCREASE...........................................        123,469,491     758,944,824
                                                              -----------------   -------------
DIVIDENDS AND DISTRIBUTIONS FROM:
Net investment income.......................................       (112,326,026)   (127,913,235)
Net realized gain...........................................        (13,000,035)       --
                                                              -----------------   -------------
     TOTAL..................................................       (125,326,061)   (127,913,235)
                                                              -----------------   -------------
Net decrease from transactions in shares of beneficial
  interest..................................................       (642,069,697)   (137,151,642)
                                                              -----------------   -------------
     NET INCREASE (DECREASE)................................       (643,926,267)    493,879,947
NET ASSETS:
Beginning of period.........................................      3,320,871,248   2,826,991,301
                                                              -----------------   -------------
     END OF PERIOD
    (INCLUDING UNDISTRIBUTED NET INVESTMENT INCOME OF
    $764,341 AND $5,908,915, RESPECTIVELY)..................   $  2,676,944,981   $3,320,871,248
                                                              -----------------   -------------
                                                              -----------------   -------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       51
<PAGE>
DEAN WITTER UTILITIES FUND
NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 1996
 
1. ORGANIZATION AND ACCOUNTING POLICIES
 
Dean Witter Utilities Fund (the "Fund") is registered under the Investment
Company Act of 1940, as amended (the "Act"), as a diversified, open-end
management investment company. The Fund's investment objective is to provide
current income and long-term growth of income and capital. The Fund seeks to
achieve its objective by investing primarily in equity and fixed income
securities of companies engaged in the public utilities industry. The Fund was
organized as a Massachusetts business trust on December 8, 1987 and commenced
operations on April 29, 1988.
 
The preparation of financial statements in accordance with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts and disclosures. Actual results could differ from
those estimates.
 
The following is a summary of significant accounting policies:
 
A. VALUATION OF INVESTMENTS -- (1) an equity security listed or traded on the
New York or American Stock Exchange or other stock exchange is valued at its
latest sale price on that exchange prior to the time when assets are valued; if
there were no sales that day, the security is valued at the latest bid price;
(2) all other portfolio securities for which over-the-counter market quotations
are readily available are valued at the latest available bid price prior to the
time of valuation; (3) when market quotations are not readily available,
including circumstances under which it is determined by Dean Witter InterCapital
Inc. (the "Investment Manager") that sale or bid prices are not reflective of a
security's market value, portfolio securities are valued at their fair value as
determined in good faith under procedures established by and under the general
supervision of the Trustees; (4) certain of the Fund's portfolio securities may
be valued by an outside pricing service approved by the Trustees. The pricing
service may utilize a matrix system incorporating security quality, maturity and
coupon as the evaluation model parameters, and/or research and evaluations by
its staff, including review of broker-dealer market price quotations, if
available, in determining what it believes is the fair valuation of the
portfolio securities valued by such pricing service; and (5) short-term debt
securities having a maturity date of more than sixty days at time of purchase
are valued on a mark-to-market basis until sixty days prior to maturity and
thereafter at amortized cost based on their value on the 61st day. Short-term
debt securities having a maturity date of sixty days or less at the time of
purchase are valued at amortized cost.
 
B. ACCOUNTING FOR INVESTMENTS -- Security transactions are accounted for on the
trade date (date the order to buy or sell is executed). Realized gains and
losses on security transactions are determined
 
                                       52
<PAGE>
DEAN WITTER UTILITIES FUND
NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 1996, CONTINUED
 
by the identified cost method. Discounts are amortized over the life of the
respective securities. Dividend income and other distributions are recorded on
the ex-dividend date. Interest income is accrued daily.
 
C. FEDERAL INCOME TAX STATUS -- It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute all of its taxable income to its shareholders.
Accordingly, no federal income tax provision is required.
 
D. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS -- The Fund records dividends and
distributions to its shareholders on the record date. The amount of dividends
and distributions from net investment income and net realized capital gains are
determined in accordance with federal income tax regulations which may differ
from generally accepted accounting principles. These "book/tax" differences are
either considered temporary or permanent in nature. To the extent these
differences are permanent in nature, such amounts are reclassified within the
capital accounts based on their federal tax-basis treatment; temporary
differences do not require reclassification. Dividends and distributions which
exceed net investment income and net realized capital gains for financial
reporting purposes but not for tax purposes are reported as dividends in excess
of net investment income or distributions in excess of net realized capital
gains. To the extent they exceed net investment income and net realized capital
gains for tax purposes, they are reported as distributions of paid-in-capital.
 
2. INVESTMENT MANAGEMENT AGREEMENT
 
Pursuant to an Investment Management Agreement with the Investment Manager, the
Fund pays the Investment Manager a management fee, accrued daily and payable
monthly, by applying the annual rate of 0.65% to the portion of daily net assets
not exceeding $500 million; 0.55% to the portion of daily net assets exceeding
$500 million but not exceeding $1 billion; 0.525% to the portion of daily net
assets exceeding $1 billion but not exceeding $1.5 billion; 0.50% to the portion
of daily net assets exceeding $1.5 billion but not exceeding $2.5 billion;
0.475% to the portion of daily net assets exceeding $2.5 billion but not
exceeding $3.5 billion; 0.45% to the portion of daily net assets exceeding $3.5
billion but not exceeding $5 billion; and 0.425% to the portion of daily net
assets exceeding $5 billion.
 
Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, office space, facilities, equipment,
clerical, bookkeeping and certain legal services and pays the salaries of
 
                                       53
<PAGE>
DEAN WITTER UTILITIES FUND
NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 1996, CONTINUED
 
all personnel, including officers of the Fund who are employees of the
Investment Manager. The Investment Manager also bears the cost of telephone
services, heat, light, power and other utilities provided to the Fund.
 
3. PLAN OF DISTRIBUTION
 
Shares of the Fund are distributed by Dean Witter Distributors Inc. (the
"Distributor"), an affiliate of the Investment Manager. The Fund has adopted a
Plan of Distribution (the "Plan") pursuant to Rule 12b-1 under the Act pursuant
to which the Fund pays the Distributor compensation, accrued daily and payable
monthly, at an annual rate of 1.0% of the lesser of: (a) the average daily
aggregate gross sales of the Fund's shares since the Fund's inception (not
including reinvestment of dividend or capital gain distributions) less the
average daily aggregate net asset value of the Fund's shares redeemed since the
Fund's inception upon which a contingent deferred sales charge has been imposed
or upon which such charge has been waived; or (b) the Fund's average daily net
assets. Amounts paid under the Plan are paid to the Distributor to compensate it
for the services provided and the expenses borne by it and others in the
distribution of the Fund's shares, including the payment of commissions for
sales of the Fund's shares and incentive compensation to, and expenses of,
account executives of Dean Witter Reynolds Inc. ("DWR"), an affiliate of the
Investment Manager and Distributor, and other employees or selected
broker-dealers, who engage in or support distribution of the Fund's shares or
who service shareholder accounts, including overhead and telephone expenses,
printing and distribution of prospectuses and reports used in connection with
the offering of the Fund's shares to other than current shareholders and
preparation, printing and distribution of sales literature and advertising
materials. In addition, the Distributor may be compensated under the Plan for
its opportunity costs in advancing such amounts which compensation would be in
the form of a carrying charge on any unreimbursed expenses by the Distributor.
 
Provided that the Plan continues in effect, any cumulative expenses incurred but
not yet recovered may be recovered through future distribution fees from the
Fund and contingent deferred sales charges from the Fund's shareholders.
 
Although there is no legal obligation for the Fund to pay expenses incurred in
excess of payments made to the Distributor under the Plan and the proceeds of
contingent deferred sales charges paid by investors upon redemption of shares,
if for any reason the Plan is terminated, the Trustees will consider at that
time the manner in which to treat such expenses. The Distributor has advised the
Fund that such excess amounts, including carrying charges, totaled $79,638,749
at December 31, 1996.
 
                                       54
<PAGE>
DEAN WITTER UTILITIES FUND
NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 1996, CONTINUED
 
The Distributor has informed the Fund that for the year ended December 31, 1996,
it received approximately $5,371,000 in contingent deferred sales charges from
certain redemptions of the Fund's shares.
 
4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES
 
The cost of purchases and proceeds from sales of portfolio securities, excluding
short-term investments, for the year ended December 31, 1996 aggregated
$206,863,095 and $827,394,262, respectively. Included in the aforementioned are
purchases and sales of U.S. Government securities of $36,230,229 and
$61,402,880, respectively. Included in the aforementioned are sales of Citizens
Utilities Co., an affiliate of the Fund by virtue of a common Trustee, in the
amount of $959,850, as well as a realized loss of $27,890.
 
For the year ended December 31, 1996, the Fund incurred approximately $162,000
in brokerage commissions with DWR for portfolio transactions executed on behalf
of the Fund.
 
Dean Witter Trust Company, an affiliate of the Investment Manager and
Distributor, is the Fund's transfer agent. At December 31, 1996, the Fund had
transfer agent fees and expenses payable of approximately $230,000.
 
The Fund has an unfunded noncontributory defined benefit pension plan covering
all independent Trustees of the Fund who will have served as independent
Trustees for at least five years at the time of retirement. Benefits under this
plan are based on years of service and compensation during the last five years
of service. Aggregate pension costs for the year ended December 31, 1996
included in Trustees' fees and expenses in the Statement of Operations amounted
to $726. At December 31, 1996, the Fund had an accrued pension liability of
$49,476 which is included in accrued expenses in the Statement of Assets and
Liabilities.
 
5. SHARES OF BENEFICIAL INTEREST
 
Transactions in shares of beneficial interest were as follows:
 
<TABLE>
<CAPTION>
                                                                            FOR THE YEAR                     FOR THE YEAR
                                                                                ENDED                            ENDED
                                                                          DECEMBER 31, 1996                DECEMBER 31, 1995
                                                                   -------------------------------   -----------------------------
                                                                      SHARES           AMOUNT           SHARES          AMOUNT
                                                                   ------------   ----------------   ------------   --------------
<S>                                                                <C>            <C>                <C>            <C>
Sold.............................................................    20,469,306   $    305,649,321     35,158,052   $  482,155,919
Reinvestment of dividends and distributions......................     6,797,078        100,198,592      7,381,506      101,941,449
                                                                   ------------   ----------------   ------------   --------------
                                                                     27,266,384        405,847,913     42,539,558      584,097,368
Repurchased......................................................   (70,657,866)    (1,047,917,610)   (53,056,841)    (721,249,010)
                                                                   ------------   ----------------   ------------   --------------
Net decrease.....................................................   (43,391,482)  $   (642,069,697)   (10,517,283)  $ (137,151,642)
                                                                   ------------   ----------------   ------------   --------------
                                                                   ------------   ----------------   ------------   --------------
</TABLE>
 
                                       55
<PAGE>
DEAN WITTER UTILITIES FUND
NOTES TO FINANCIAL STATEMENTS DECEMBER 31, 1996, CONTINUED
 
6. FEDERAL INCOME TAX STATUS
 
During the year ended December 31, 1996 the Fund utilized its net capital loss
carryover of approximately $6,396,000. As of December 31, 1996, the Fund had
temporary book/tax differences primarily attributable to capital loss deferrals
on wash sales.
 
                                       56
<PAGE>
DEAN WITTER UTILITIES FUND
FINANCIAL HIGHLIGHTS
 
Selected ratios and per share data for a share of beneficial interest
outstanding throughout each period:
 
<TABLE>
<CAPTION>
                                                                                                                FOR THE PERIOD
                                                FOR THE YEAR ENDED DECEMBER 31                                 APRIL 29, 1988*
                   ----------------------------------------------------------------------------------------        THROUGH
                      1996        1995       1994       1993       1992       1991       1990       1989      DECEMBER 31, 1988
- ---------------------------------------------------------------------------------------------------------------------------------
 
<S>                <C>          <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
PER SHARE
OPERATING
PERFORMANCE:
 
Net asset value,
 beginning of
 period..........   $   15.15   $   12.30  $   14.34  $   13.37  $   12.93  $   11.48  $   12.22  $   10.41       $    10.00
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------           ------
 
Net investment
 income..........        0.56        0.58       0.63       0.61       0.63       0.65       0.65       0.63             0.40
Net realized and
 unrealized gain
 (loss)..........        0.16        2.85      (2.04)      1.09       0.47       1.45      (0.71)      1.86             0.38
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------           ------
 
Total from
 investment
 operations......        0.72        3.43      (1.41)      1.70       1.10       2.10      (0.06)      2.49             0.78
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------           ------
 
Less dividends
 and
 distributions
 from:
   Net investment
   income........       (0.58)      (0.58)     (0.61)     (0.61)     (0.63)     (0.65)     (0.65)     (0.67)           (0.36)
   Net realized
   gain..........       (0.07)     --          (0.02)     (0.12)     (0.03)    --          (0.03)     (0.01)           (0.01)
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------           ------
 
Total dividends
 and
 distributions...       (0.65)      (0.58)     (0.63)     (0.73)     (0.66)     (0.65)     (0.68)     (0.68)           (0.37)
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------           ------
 
Net asset value,
 end of period...   $   15.22   $   15.15  $   12.30  $   14.34  $   13.37  $   12.93  $   11.48  $   12.22       $    10.41
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------           ------
                   -----------  ---------  ---------  ---------  ---------  ---------  ---------  ---------           ------
 
TOTAL INVESTMENT
RETURN+..........        4.99%      28.42%     (9.90)%     12.79%      8.75%     18.89%     (0.27)%     24.51%            7.90%(1)
 
RATIOS TO AVERAGE
NET ASSETS:
Expenses.........        1.64%       1.65%      1.64%      1.46%      1.59%      1.59%      1.67%      1.68%            1.84%(2)
 
Net investment
 income..........        3.63%       4.19%      4.67%      4.32%      5.05%      5.58%      5.85%      6.07%            6.69%(2)
 
SUPPLEMENTAL
DATA:
Net assets, end
 of period, in
 millions........   $   2,677   $   3,321  $   2,827  $   3,881  $   2,926  $   1,959  $   1,369  $   1,131       $      458
 
Portfolio
 turnover rate...           7%          9%        11%        16%        14%        13%        13%        25%              12%(1)
 
Average
 commission rate
 paid............      $0.0547     --         --         --         --         --         --         --               --
<FN>
 
- ---------------------
 *   Commencement of operations.
 +   Does not reflect the deduction of sales charge. Calculated based on the net
     asset value as of the last business day of the period.
(1)  Not annualized.
(2)  Annualized.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
 
                                       57
<PAGE>
DEAN WITTER UTILITIES FUND
REPORT OF INDEPENDENT ACCOUNTANTS
 
TO THE SHAREHOLDERS AND TRUSTEES
OF DEAN WITTER UTILITIES FUND
 
In our opinion, the accompanying statement of assets and liabilities, including
the portfolio of investments, and the related statements of operations and of
changes in net assets and the financial highlights present fairly, in all
material respects, the financial position of Dean Witter Utilities Fund (the
"Fund") at December 31, 1996, the results of its operations for the year then
ended, the changes in its net assets for each of the two years in the period
then ended and the financial highlights for each of the eight years in the
period then ended and for the period April 29, 1988 (commencement of operations)
through December 31, 1988, in conformity with generally accepted accounting
principles. These financial statements and financial highlights (hereafter
referred to as "financial statements") are the responsibility of the Fund's
management; our responsibility is to express an opinion on these financial
statements based on our audits. We conducted our audits of these financial
statements in accordance with generally accepted auditing standards which
require that we plan and perform the audit to obtain reasonable assurance about
whether the financial statements are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audits, which included
confirmation of securities at December 31, 1996 by correspondence with the
custodian, provide a reasonable basis for the opinion expressed above.
 
PRICE WATERHOUSE LLP
1177 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
FEBRUARY 6, 1997
 
                      1996 FEDERAL TAX NOTICE (UNAUDITED)
 
       During the year ended December 31, 1996, the Fund paid to
       shareholders $0.07 per share from long-term capital gains. For
       such period 91.73% of the income paid qualified for the dividends
       received deduction available to corporations.
 
                                       58
<PAGE>
APPENDIX
- --------------------------------------------------------------------------------
 
RATINGS
MOODY'S INVESTORS SERVICE INC. ("MOODY'S")
                                  BOND RATINGS
 
Aaa   Bonds which are rated Aaa are judged to be of the best quality. They carry
      the smallest degree of investment risk and are generally referred to as
      "gilt edge." Interest payments are protected by a large or by an
      exceptionally stable margin and principal is secure. While the various
      protective elements are likely to change, such changes as can be
      visualized are most unlikely to impair the fundamentally strong position
      of such issues.
 
Aa    Bonds which are rated Aa are judged to be of high quality by all
      standards. Together with the Aaa group they comprise what are generally
      known as high grade bonds. They are rated lower than the best bonds
      because margins of protection may not be as large as in Aaa securities or
      fluctuation of protective elements may be of greater amplitude or there
      may be other elements present which make the long-term risks appear
      somewhat larger than in Aaa securities.
 
A     Bonds which are rated A possess many favorable investment attributes and
      are to be considered as upper medium grade obligations. Factors giving
      security to principal and interest are considered adequate, but elements
      may be present which suggest a susceptibility to impairment sometime in
      the future.
 
Baa   Bonds which are rated Baa are considered as medium grade obligations;
      i.e., they are neither highly protected nor poorly secured. Interest
      payments and principal security appear adequate for the present but
      certain protective elements may be lacking or may be characteristically
      unreliable over any great length of time. Such bonds lack outstanding
      investment characteristics and in fact have speculative characteristics as
      well.
 
      Bonds rated Aaa, Aa, A and Baa are considered investment grade bonds.
 
    RATING REFINEMENTS:  Moody's may apply numerical modifiers, 1, 2, and 3 in
each generic rating classification from Aa through B in its corporate and
municipal bond rating system. The modifier 1 indicates that the security ranks
in the higher end of its generic rating category; the modifier 2 indicates a
mid-range ranking; and a modifier 3 indicates that the issue ranks in the lower
end of its generic rating category.
 
                            COMMERCIAL PAPER RATINGS
 
    Moody's Commercial Paper ratings are opinions of the ability to repay
punctually promissory obligations not having an original maturity in excess of
nine months. Moody's employs the following three designations, all judged to be
investment grade, to indicate the relative repayment capacity of rated issuers:
Prime-1, Prime-2, Prime-3.
 
    Issuers rated Prime-1 have a superior capacity for repayment of short-term
promissory obligations. Issuers rated Prime-2 have a strong capacity for
repayment of short-term promissory obligations; and Issuers rated Prime-3 have
an acceptable capacity for repayment of short-term promissory obligations.
Issuers rated Not Prime do not fall within any of the Prime rating categories.
 
STANDARD & POOR'S CORPORATION ("STANDARD & POOR'S")
 
                                  BOND RATINGS
 
    A Standard & Poor's bond rating is a current assessment of the
creditworthiness of an obligor with respect to a specific obligation. This
assessment may take into consideration obligors such as guarantors, insurers, or
lessees.
 
                                       59
<PAGE>
    The ratings are based on current information furnished by the issuer or
obtained by Standard & Poor's from other sources it considers reliable. The
ratings are based, in varying degrees, on the following considerations: (1)
likelihood of default-capacity and willingness of the obligor as to the timely
payment of interest and repayment of principal in accordance with the terms of
the obligation; (2) nature of and provisions of the obligation; and (3)
protection afforded by, and relative position of, the obligation in the event of
bankruptcy, reorganization or other arrangement under the laws of bankruptcy and
other laws affecting creditors' rights.
 
    Standard & Poor's does not perform an audit in connection with any rating
and may, on occasion, rely on unaudited financial information. The ratings may
be changed, suspended or withdrawn as a result of changes in, or unavailability
of, such information, or for other reasons.
 
AAA   Debt rated AAA has the highest rating assigned by Standard & Poor's.
      Capacity to pay interest and repay principal is extremely strong.
 
AA    Debt rated AA has a very strong capacity to pay interest and repay
      principal and differs from the highest-rated issues only in small degree.
 
A     Debt rated A has a strong capacity to pay interest and repay principal
      although they are somewhat more susceptible to the adverse effects of
      changes in circumstances and economic conditions than debt in higher-rated
      categories.
 
BBB   Debt rated BBB is regarded as having an adequate capacity to pay interest
      and repay principal. Whereas it normally exhibits adequate protection
      parameters, adverse economic conditions or changing circumstances are more
      likely to lead to a weakened capacity to pay interest and repay principal
      for debt in this category than for debt in higher-rated categories.
 
      Bonds rated AAA, AA, A and BBB are considered investment grade bonds.
 
NR    Indicates that no rating has been requested, that there is insufficient
      information on which to base a rating or that Standard & Poor's does not
      rate a particular type of obligation as a matter of policy.
 
                            COMMERCIAL PAPER RATINGS
 
    Standard and Poor's commercial paper rating is a current assessment of the
likelihood of timely payment of debt having an original maturity of no more than
365 days. The commercial paper rating is not a recommendation to purchase or
sell a security. The ratings are based upon current information furnished by the
issuer or obtained by S&P from other sources it considers reliable. The ratings
may be changed, suspended, or withdrawn as a result of changes in or
unavailability of such information. Ratings are graded into group categories,
ranging from "A" for the highest quality obligations to "D" for the lowest. The
categories are as follows:
 
    Issues assigned A ratings are regarded as having the greatest capacity for
timely payment. Issues in this category are further refined with the designation
1, 2 and 3 to indicate the relative degree of safety.
 
A-1   indicates that the degree of safety regarding timely payment is very
      strong.
 
A-2   indicates capacity for timely payment on issues with this designation is
      strong. However, the relative degree of safety is not as overwhelming as
      for issues designated "A-1".
 
A-3   indicates a satisfactory capacity for timely payment. Obligations carrying
      this designation are, however, somewhat more vulnerable to the adverse
      effects of changes in circumstances than obligations carrying the higher
      designations.
 
                                       60
<PAGE>


                           DEAN WITTER UTILITIES FUND

                            PART C  OTHER INFORMATION

Item 24.  Financial Statements and Exhibits

     (a)  FINANCIAL STATEMENTS

        (1)  Financial statements and schedules, included
             in Prospectus (Part A):                             Page in
                                                                 Prospectus
                                                                 ----------
             Financial highlights for the period ended April 29,
             1988 through December 31, 1988 and for the years
             ended 1989, 1990, 1991, 1992, 1993, 1994, 1995
             and 1996. . . . . . . . . . . . . . . . . . . . . . .   4

                                                                  Page in
                                                                  SAI
                                                                  -------
             Portfolio of Investments at December 31, 1996 . . . .  44

             Statement of Assets and Liabilities at December 31,
             1996. . . . . . . . . . . . . . . . . . . . . . . . .  49

             Statement of Operations for the year ended December
             31, 1996. . . . . . . . . . . . . . . . . . . . . . .  50

             Statement of Changes in Net Assets for the years
             ended December 31, 1995 and December 31, 1996 . . . .  51

             Notes to Financial Statements . . . . . . . . . . . .  52

        (2)  Financial statements included in the Statement of
             Additional Information (Part B):

             None

        (3)  Financial statements included in Part C:

             None

     (b)     EXHIBITS:

             2. -  Amended and Restated By-Laws of the Registrant dated as
                   of October 25, 1996.

             8. -  Amendment to Custody Agreement between the Registrant
                   and The Bank of New York

            11. -  Consent of Independent Accountants

            16. -  Schedules for Computation of Performance
                   Quotations
<PAGE>

         27. -  Financial Data Schedule

          ---------------------------------
          All other exhibits were previously filed and are hereby
          incorporated by reference.

Item 25.  PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT.

          None

Item 26.  NUMBER OF HOLDERS OF SECURITIES.

          (1)                                (2)
                                     Number of Record Holders
     Title of Class                     at February 28, 1997
     --------------                  ---------------------------

Shares of Beneficial Interest                   108,342

Item 27.  INDEMNIFICATION.

     Pursuant to Section 5.3 of the Registrant's Declaration of Trust and under
Section 4.8 of the Registrant's By-Laws, the indemnification of the Registrant's
trustees, officers, employees and agents is permitted if it is determined that
they acted under the belief that their actions were in or not opposed to the
best interest of the Registrant, and, with respect to any criminal proceeding,
they had reasonable cause to believe their conduct was not unlawful.  In
addition, indemnification is permitted only if it is determined that the actions
in question did not render them liable by reason of willful misfeasance, bad
faith or gross negligence in the performance of their duties or by reason of
reckless disregard of their obligations and duties to the Registrant.  Trustees,
officers, employees and agents will be indemnified for the expense of litigation
if it is determined that they are entitled to indemnification against any
liability established in such litigation.  The Registrant may also advance money
for these expenses provided that they give their undertakings to repay the
Registrant unless their conduct is later determined to permit indemnification.

     Pursuant to Section 5.2 of the Registrant's Declaration of Trust and
paragraph 8 of the Registrant's Investment Management Agreement, neither the
Investment Manager nor any trustee, officer, employee or agent of the Registrant
shall be liable for any action or failure to act, except in the case of bad
faith, willful misfeasance, gross negligence or reckless disregard of duties to
the Registrant.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 (the "Act") may be permitted to trustees,


                                        2
<PAGE>

officers and controlling persons of the Registrant pursuant to the foregoing
provisions or otherwise, the Registrant has been advised that in the opinion of
the  Securities and Exchange Commission such indemnification is against public
policy as expressed in the Act and is, therefore, unenforceable.  In the event
that a claim for indemnification against such liabilities (other than the
payment by the Registrant of expenses incurred or paid by a trustee, officer, or
controlling person of the Registrant in connection with the successful defense
of any action, suit or proceeding) is asserted against the Registrant by such
trustee, officer or controlling person in connection with the shares being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act, and will be governed by the final adjudication
of such issue.

     The Registrant hereby undertakes that it will apply the indemnification
provision of its by-laws in a manner consistent with Release 11330 of the
Securities and Exchange Commission under the Investment Company Act of 1940, so
long as the interpretation of Sections 17(h) and 17(i) of such Act remains in
effect.

     Registrant, in conjunction with the Investment Manager, Registrant's
Trustees, and other registered investment management companies managed by the
Investment Manager, maintains insurance on behalf of any person who is or was a
Trustee, officer, employee, or agent of Registrant, or who is or was serving at
the request of Registrant as a trustee, director, officer, employee or agent of
another trust or corporation, against any liability asserted against him and
incurred by him or arising out of his position.  However, in no event will
Registrant maintain insurance to indemnify any such person for any act for which
Registrant itself is not permitted to indemnify him.

Item 28.  BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER.

     See "The Fund and Its Management" in the Prospectus regarding the business
of the investment adviser.  The following information is given regarding
officers of Dean Witter InterCapital Inc.  InterCapital is a wholly-owned
subsidiary of Dean Witter, Discover & Co.  The principal address of the Dean
Witter Funds is Two World Trade Center, New York, New York 10048.

The term "Dean Witter Funds" used below refers to the following registered
investment companies:

CLOSED-END INVESTMENT COMPANIES
 (1) InterCapital Income Securities Inc.
 (2) High Income Advantage Trust
 (3) High Income Advantage Trust II
 (4) High Income Advantage Trust III


                                        3
<PAGE>

 (5) Municipal Income Trust
 (6) Municipal Income Trust II
 (7) Municipal Income Trust III
 (8) Dean Witter Government Income Trust
 (9) Municipal Premium Income Trust
(10) Municipal Income Opportunities Trust
(11) Municipal Income Opportunities Trust II
(12) Municipal Income Opportunities Trust III
(13) Prime Income Trust
(14) InterCapital Insured Municipal Bond Trust
(15) InterCapital Quality Municipal Income Trust
(16) InterCapital Quality Municipal Investment Trust
(17) InterCapital Insured Municipal Income Trust
(18) InterCapital California Insured Municipal Income Trust
(19) InterCapital Insured Municipal Trust
(20) InterCapital Quality Municipal Securities
(21) InterCapital New York Quality Municipal Securities
(22) InterCapital California Quality Municipal Securities
(23) InterCapital Insured California Municipal Securities
(24) InterCapital Insured Municipal Securities

OPEN-END INVESTMENT COMPANIES:
 (1) Dean Witter Short-Term Bond Fund
 (2) Dean Witter Tax-Exempt Securities Trust
 (3) Dean Witter Tax-Free Daily Income Trust
 (4) Dean Witter Dividend Growth Securities Inc.
 (5) Dean Witter Convertible Securities Trust
 (6) Dean Witter Liquid Asset Fund Inc.
 (7) Dean Witter Developing Growth Securities Trust
 (8) Dean Witter Retirement Series
 (9) Dean Witter Federal Securities Trust
(10) Dean Witter World Wide Investment Trust
(11) Dean Witter U.S. Government Securities Trust
(12) Dean Witter Select Municipal Reinvestment Fund
(13) Dean Witter High Yield Securities Inc.
(14) Dean Witter Intermediate Income Securities
(15) Dean Witter New York Tax-Free Income Fund
(16) Dean Witter California Tax-Free Income Fund
(17) Dean Witter Health Sciences Trust
(18) Dean Witter California Tax-Free Daily Income Trust
(19) Dean Witter Global Asset Allocation Fund
(20) Dean Witter American Value Fund
(21) Dean Witter Strategist Fund
(22) Dean Witter Utilities Fund
(23) Dean Witter World Wide Income Trust
(24) Dean Witter New York Municipal Money Market Trust
(25) Dean Witter Capital Growth Securities
(26) Dean Witter Precious Metals and Minerals Trust
(27) Dean Witter European Growth Fund Inc.
(28) Dean Witter Global Short-Term Income Fund Inc.
(29) Dean Witter Pacific Growth Fund Inc.
(30) Dean Witter Multi-State Municipal Series Trust
(31) Dean Witter Premier Income Trust
(32) Dean Witter Short-Term U.S. Treasury Trust


                                        4
<PAGE>

(33) Dean Witter Diversified Income Trust
(34) Dean Witter U.S. Government Money Market Trust
(35) Dean Witter Global Dividend Growth Securities
(36) Active Assets California Tax-Free Trust
(37) Dean Witter Natural Resource Development Securities Inc.
(38) Active Assets Government Securities Trust
(39) Active Assets Money Trust
(40) Active Assets Tax-Free Trust
(41) Dean Witter Limited Term Municipal Trust
(42) Dean Witter Variable Investment Series
(43) Dean Witter Value-Added Market Series
(44) Dean Witter Global Utilities Fund
(45) Dean Witter High Income Securities
(46) Dean Witter National Municipal Trust
(47) Dean Witter International SmallCap Fund
(48) Dean Witter Mid-Cap Growth Fund
(49) Dean Witter Select Dimensions Investment Series
(50) Dean Witter Balanced Growth Fund
(51) Dean Witter Balanced Income Fund
(52) Dean Witter Hawaii Municipal Trust
(53) Dean Witter Capital Appreciation Fund
(54) Dean Witter Intermediate Term U.S. Treasury Trust
(55) Dean Witter Information Fund
(56) Dean Witter Japan Fund
(57) Dean Witter Income Builder Fund
(58) Dean Witter Special Value Fund
(59) Dean Witter Financial Services Trust
(60) Dean Witter Market Leader Trust

The term "TCW/DW Funds" refers to the following registered investment companies:

OPEN-END INVESTMENT COMPANIES
 (1) TCW/DW Core Equity Trust
 (2) TCW/DW North American Government Income Trust
 (3) TCW/DW Latin American Growth Fund
 (4) TCW/DW Income and Growth Fund
 (5) TCW/DW Small Cap Growth Fund
 (6) TCW/DW Balanced Fund
 (7) TCW/DW Total Return Trust
 (8) TCW/DW Mid-Cap Equity Trust
 (9) TCW/DW Global Telecom Trust
 (10)TCW/DW Strategic Income Trust

CLOSED-END INVESTMENT COMPANIES
 (1) TCW/DW Term Trust 2000
 (2) TCW/DW Term Trust 2002
 (3) TCW/DW Term Trust 2003
 (4) TCW/DW Emerging Markets Opportunities Trust


                                        5
<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Charles A. Fiumefreddo        Executive Vice President and Director of Dean
Chairman, Chief               Witter Reynolds Inc. ("DWR"); Chairman, Chief
Executive Officer and         Executive Officer and Director of Dean Witter
Director                      Distributors Inc. ("Distributors") and Dean
                              Witter Services Company Inc. ("DWSC"); Chairman
                              and Director of Dean Witter Trust Company
                              ("DWTC"); Chairman, Director or Trustee, President
                              and Chief Executive Officer of the Dean Witter
                              Funds and Chairman, Chief Executive Officer and
                              Trustee of the TCW/DW Funds; Formerly Executive
                              Vice President and Director of Dean Witter,
                              Discover & Co. ("DWDC"); Director and/or officer
                              of various DWDC subsidiaries.


Philip J. Purcell             Chairman, Chief Executive Officer and Director of
Director                      DWDC and DWR; Director of DWSC
                              and Distributors; Director or Trustee of the Dean
                              Witter Funds; Director and/or officer of various
                              DWDC subsidiaries.

Richard M. DeMartini          Executive Vice President of DWDC; President and
Director                      Chief Operating Officer of Dean Witter Capital;
                              Director of DWR, DWSC, Distributors and DWTC;
                              Trustee of the TCW/DW Funds; Member (since
                              January, 1993) and Chairman (since January, 1995)
                              of the Board of Directors of NASDAQ.

James F. Higgins              Executive Vice President of DWDC; President and
Director                      Chief Operating Officer of Dean Witter Financial;
                              Director of DWR, DWSC, Distributors and DWTC.

Thomas C. Schneider           Executive Vice President and Chief Financial
Executive Vice                Officer of DWDC, DWR, DWSC and Distributors;
President, Chief              Director of DWR, DWSC and Distributors.
Financial Officer and
Director

Christine A. Edwards          Executive Vice President, Secretary and General
Director                      Counsel of DWDC and DWR; Executive Vice President,
                              Secretary and Chief Legal Officer of Distributors;
                              Director of DWR, DWSC and Distributors.

Robert M. Scanlan             President and Chief Operating Officer of DWSC,
President and Chief           Executive Vice President of Distributors;
Operating Officer             Executive Vice President and Director of DWTC;
                              Vice President of the Dean Witter Funds and the
                              TCW/DW Funds.


                                        6
<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             -------------------------------------------------

John Van Heuvelen             President, Chief Operating Officer and Director
Executive Vice                of DWTC.
President

Joseph J. McAlinden           Vice President of the Dean Witter Funds and
Executive Vice President      Director of DWTC.
and Chief Investment
Officer

Peter M. Avelar
Senior Vice President         Vice President of various Dean Witter Funds.

Mark Bavoso
Senior Vice President         Vice President of various Dean Witter Funds.

Richard Felegy
Senior Vice President

Edward Gaylor
Senior Vice President         Vice President of various Dean Witter Funds.

Robert S. Giambrone           Senior Vice President of DWSC, Distributors
Senior Vice President         and DWTC and Director of DWTC; Vice President
                              of the Dean Witter Funds and the TCW/DW Funds.

Rajesh K. Gupta
Senior Vice President         Vice President of various Dean Witter Funds.

Kenton J. Hinchcliffe
Senior Vice President         Vice President of various Dean Witter Funds.

Kevin Hurley
Senior Vice President         Vice President of various Dean Witter Funds.

Jenny Beth Jones
Senior Vice President         Vice President of Dean Witter Special Value Fund.

John B. Kemp, III             Director of the Provident Savings Bank, Jersey
Senior Vice President         City, New Jersey.

Anita Kolleeny
Senior Vice President         Vice President of various Dean Witter Funds.

Jonathan R. Page
Senior Vice President         Vice President of various Dean Witter Funds.

Ira N. Ross
Senior Vice President         Vice President of various Dean Witter Funds.


                                        7
<PAGE>


NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------

Guy G. Rutherfurd, Jr.        Vice President of Dean Witter Market Leader
Senior Vice President         Trust.

Rochelle G. Siegel
Senior Vice President         Vice President of various Dean Witter Funds.

Paul D. Vance
Senior Vice President         Vice President of various Dean Witter Funds.

Elizabeth A. Vetell
Senior Vice President

James F. Willison
Senior Vice President         Vice President of various Dean Witter Funds.

Ronald J. Worobel
Senior Vice President         Vice President of various Dean Witter Funds.

Thomas F. Caloia              First Vice President and Assistant Treasurer of
First Vice President          DWSC, Assistant Treasurer of Distributors;
and Assistant                 Treasurer and Chief Financial Officer of the
Treasurer                     Dean Witter Funds and the TCW/DW Funds.

Marilyn K. Cranney            Assistant Secretary of DWR; First Vice President
First Vice President          and Assistant Secretary of DWSC; Assistant
and Assistant Secretary       Secretary of the Dean Witter Funds and the TCW/DW
                              Funds.

Barry Fink                    Assistant Secretary of DWR; Senior Vice
Senior Vice President,        President,Secretary and General Counsel of
Secretary and General         DWSC; Senior Vice President, Assistant
Counsel                       Secretary and Assistant General Counsel
                              of Distributors; Vice President, Secretary
                              and General Counsel of the Dean Witter
                              Funds and the TCW/DW Funds.
       
Michael Interrante            First Vice President and Controller of DWSC;
First Vice President          Assistant Treasurer of Distributors;First Vice
and Controller                President and Treasurer of DWTC.

Robert Zimmerman
First Vice President

Joan Allman
Vice President

Joseph Arcieri
Vice President                Vice President of various Dean Witter Funds.


                                        8
<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------
Kirk Balzer
Vice President                Vice President of various Dean Witter Funds.

Douglas Brown
Vice President

Philip Casparius
Vice President

Thomas Chronert
Vice President

Rosalie Clough
Vice President

Patricia A. Cuddy
Vice President                Vice President of various Dean Witter Funds.

B. Catherine Connelly
Vice President

Salvatore DeSteno
Vice President                Vice President of DWSC.

Frank J. DeVito
Vice President                Vice President of DWSC.

Bruce Dunn
Vice President

Jeffrey D. Geffen
Vice President

Deborah Genovese
Vice President

Peter W. Gurman
Vice President

John Hechtlinger
Vice President

Peter Hermann
Vice President                Vice President of various Dean Witter Funds.

Elizabeth Hinchman
Vice President

David Hoffman
Vice President


                                        9
<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------
David Johnson
Vice President

Christopher Jones
Vice President

James Kastberg
Vice President

Stanley Kapica
Vice President

Michael Knox
Vice President                Vice President of various Dean Witter Funds.

Konrad J. Krill
Vice President                Vice President of various Dean Witter Funds.

Paula LaCosta
Vice President                Vice President of various Dean Witter Funds.

Thomas Lawlor
Vice President

Gerard Lian
Vice President                Vice President of various Dean Witter Funds.

LouAnne D. McInnis            Vice President and Assistant Secretary of DWSC;
Vice President and            Assistant Secretary of the Dean Witter Funds and
Assistant Secretary           the TCW/DW Funds.

Sharon K. Milligan
Vice President

Julie Morrone
Vice President

David Myers
Vice President

James Nash
Vice President

Richard Norris
Vice President

Anne Pickrell
Vice President                Vice President of Dean Witter Global Short-
                              Term Income Fund Inc.


                                       10
<PAGE>

NAME AND POSITION             OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER              OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.             AND NATURE OF CONNECTION
- -----------------             ------------------------------------------------
Hugh Rose
Vice President

Robert Rossetti               Vice President of Dean Witter Precious Metals
Vice President                Trust.

Ruth Rossi                    Vice President and Assistant Secretary of DWSC;
Vice President and            Assistant Secretary of the Dean Witter Funds and
Assistant Secretary           the TCW/DW Funds.

Carl F. Sadler
Vice President

Rafael Scolari
Vice President                Vice President of Prime Income Trust.

Peter Seeley                  Vice President of Dean Witter World
Vice President                Wide Income Trust.

Jayne M. Stevlingson
Vice President                Vice President of various Dean Witter Funds.

Kathleen Stromberg
Vice President                Vice President of various Dean Witter Funds.

Vinh Q. Tran
Vice President                Vice President of various Dean Witter Funds.

Alice Weiss
Vice President                Vice President of various Dean Witter Funds.

Katherine Wickham
Vice President

Item 29.    PRINCIPAL UNDERWRITERS

     (a)  Dean Witter Distributors Inc. ("Distributors"), a Delaware
          corporation, is the principal underwriter of the Registrant.
          Distributors is also the principal underwriter of the following
          investment companies:
 (1)           Dean Witter Liquid Asset Fund Inc.
 (2)           Dean Witter Tax-Free Daily Income Trust
 (3)           Dean Witter California Tax-Free Daily Income Trust
 (4)           Dean Witter Retirement Series
 (5)           Dean Witter Dividend Growth Securities Inc.
 (6)           Dean Witter Global Asset Allocation
 (7)           Dean Witter World Wide Investment Trust
 (8)           Dean Witter Capital Growth Securities
 (9)           Dean Witter Convertible Securities Trust
(10)           Active Assets Tax-Free Trust


                                       11
<PAGE>

(11)      Active Assets Money Trust
(12)      Active Assets California Tax-Free Trust
(13)      Active Assets Government Securities Trust
(14)      Dean Witter Short-Term Bond Fund
(15)      Dean Witter Mid-Cap Growth Fund
(16)      Dean Witter U.S. Government Securities Trust
(17)      Dean Witter High Yield Securities Inc.
(18)      Dean Witter New York Tax-Free Income Fund
(19)      Dean Witter Tax-Exempt Securities Trust
(20)      Dean Witter California Tax-Free Income Fund
(21)      Dean Witter Limited Term Municipal Trust
(22)      Dean Witter Natural Resource Development Securities Inc.
(23)      Dean Witter World Wide Income Trust
(24)      Dean Witter Utilities Fund
(25)      Dean Witter Strategist Fund
(26)      Dean Witter New York Municipal Money Market Trust
(27)      Dean Witter Intermediate Income Securities
(28)      Prime Income Trust
(29)      Dean Witter European Growth Fund Inc.
(30)      Dean Witter Developing Growth Securities Trust
(31)      Dean Witter Precious Metals and Minerals Trust
(32)      Dean Witter Pacific Growth Fund Inc.
(33)      Dean Witter Multi-State Municipal Series Trust
(34)      Dean Witter Federal Securities Trust
(35)      Dean Witter Short-Term U.S. Treasury Trust
(36)      Dean Witter Diversified Income Trust
(37)      Dean Witter Health Sciences Trust
(38)      Dean Witter Global Dividend Growth Securities
(39)      Dean Witter American Value Fund
(40)      Dean Witter U.S. Government Money Market Trust
(41)      Dean Witter Global Short-Term Income Fund Inc.
(42)      Dean Witter Premier Income Trust
(43)      Dean Witter Value-Added Market Series
(44)      Dean Witter Global Utilities Fund
(45)      Dean Witter High Income Securities
(46)      Dean Witter National Municipal Trust
(47)      Dean Witter International SmallCap Fund
(48)      Dean Witter Balanced Growth Fund
(49)      Dean Witter Balanced Income Fund
(50)      Dean Witter Hawaii Municipal Trust
(51)      Dean Witter Variable Investment Series
(52)      Dean Witter Capital Appreciation Fund
(53)      Dean Witter Intermediate Term U.S. Treasury Trust
(54)      Dean Witter Information Fund
(55)      Dean Witter Japan Fund
(56)      Dean Witter Income Builder Fund
(57)      Dean Witter Special Value Fund
(58)      Dean Witter Financial Services Trust
(59)      Dean Witter Market Leader Trust
 (1)      TCW/DW Core Equity Trust
 (2)      TCW/DW North American Government Income Trust
 (3)      TCW/DW Latin American Growth Fund
 (4)      TCW/DW Income and Growth Fund
 (5)      TCW/DW Small Cap Growth Fund


                                       12
<PAGE>

 (6)      TCW/DW Balanced Fund
 (7)      TCW/DW Total Return Trust
 (8)      TCW/DW Mid-Cap Equity Trust
 (9)      TCW/DW Global Telecom Trust
 (10)     TCW/DW Strategic Income Trust

     (b)  The following information is given regarding directors and officers of
     Distributors not listed in Item 28 above.  The principal address of
     Distributors is Two World Trade Center, New York, New York 10048.  None of
     the following persons has any position or office with the Registrant.



                                             Positions and
                                             Office with
     Name                                    Distributors
     ----                                    -------------

     Fredrick K. Kubler                      Senior Vice President, Assistant
                                             Secretary and Chief Compliance
                                             Officer.


     Michael T. Gregg                        Vice President and Assistant
                                             Secretary.

Item 30.    LOCATION OF ACCOUNTS AND RECORDS

     All accounts, books and other documents required to be maintained by
Section 31(a) of the Investment Company Act of 1940 and the Rules thereunder are
maintained by the Investment Manager at its offices, except records relating to
holders of shares issued by the Registrant, which are maintained by the
Registrant's Transfer Agent, at its place of business as shown in the
prospectus.


Item 31.    MANAGEMENT SERVICES

     Registrant is not a party to any such management-related service contract.

Item 32.    UNDERTAKINGS

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


                                       13

<PAGE>
                                   SIGNATURES
 
    Pursuant  to the requirements of the  Securities Act of 1933 and the 
Investment Company Act of 1940, the Registrant certifies that it meets all of 
the requirements for effectiveness of this Registration Statement pursuant to 
Rule 485(b) under the Securities Act of 1933 and has duly caused this 
Post-Effective Amendment to the Registration Statement to be signed on its 
behalf by the undersigned, thereunto duly authorized, in the City of New York 
and State of New York on the 24th day of March, 1997.

 
                                          DEAN WITTER UTILITIES FUND
 
                                          By        /s/ Barry Fink 
                                             -----------------------------------
                                                        Barry Fink
                                                Vice President and Secretary
 
    Pursuant to the requirements of the  Securities Act of 1933, this  
Post-Effective Amendment No. 10 has been signed below by the following 
persons in the capacities and on the dates indicated.


      Signatures                     Title                       Date
      ----------                     -----                       ----

(1)  Principal Executive Officer     President, Chief
                                     Executive Officer,
                                     Trustee and Chairman


By /s/ Charles A. Fiumefreddo                                     03/24/97
   --------------------------
       Charles A. Fiumefreddo

(2) Principal Financial Officer      Treasurer and Principal
                                     Accounting Officer

By /s/ Thomas F. Caloia                                            03/24/97
   ---------------------------
       Thomas F. Caloia

(3) Majority of the Trustees 

    Charles A. Fiumefreddo (Chairman) 
    Philip J. Purcell


By /s/ Barry Fink                                                  03/24/97
   --------------------------
       Barry Fink
       Attorney-in-Fact


  Michael Bozic
  Edwin J. Garn
  John R. Haire
  Manuel H. Johnson
  Michael E. Nugent
  John L. Schroeder


By  /s/ David M. Butowsky                                          03/24/97
   --------------------------
        David M. Butowsky
        Attorney-in-Fact


<PAGE>
                              DEAN WITTER UTILITIES FUND

                                    EXHIBIT INDEX


2.      --     Amended and Restated By-Laws of the Registrant
               as of October 25, 1996

8.      --     Amendment to the Custodian Agreement between Registrant and 
               The Bank of New York  

11.     --     Consent of Independent Accountants

16.     --     Schedules for Computation of Performance Quotations 

27.     --     Financial Data Schedule


<PAGE>


                                       BY-LAWS 

                                         OF 

                             DEAN WITTER UTILITIES FUND 
                    AMENDED AND RESTATED AS OF OCTOBER 25, 1996 

                                      ARTICLE I 
                                     DEFINITIONS 

   The terms "COMMISSION", "DECLARATION", "DISTRIBUTOR", "INVESTMENT 
ADVISER", "MAJORITY SHAREHOLDER VOTE", "1940 ACT", "SHAREHOLDER", "SHARES", 
"TRANSFER AGENT", "TRUST", "TRUST PROPERTY", AND "TRUSTEES" have the 
respective meanings given them in the Declaration of Trust of Dean Witter 
Utilities Fund dated December 8, 1987. 

                                  ARTICLE II 
                                   OFFICES 

   SECTION 2.1. PRINCIPAL OFFICE. Until changed by the Trustees, the 
principal office of the Trust in the Commonwealth of Massachusetts shall be 
in the City of Boston, County of Suffolk. 

   SECTION 2.2. OTHER OFFICES. In addition to its principal office in the 
Commonwealth of Massachusetts, the Trust may have an office or offices in the 
City of New York, State of New York, and at such other places within and 
without the Commonwealth as the Trustees may from time to time designate or 
the business of the Trust may require. 

                                 ARTICLE III 
                            SHAREHOLDERS' MEETINGS 

   SECTION 3.1. PLACE OF MEETINGS. Meetings of Shareholders shall be held at 
such place, within or without the Commonwealth of Massachusetts, as may be 
designated from time to time by the Trustees. 

   SECTION 3.2. MEETINGS. Meetings of Shareholders of the Trust shall be held 
whenever called by the Trustees or the President of the Trust and whenever 
election of a Trustee or Trustees by Shareholders is required by the 
provisions of Section 16(a) of the 1940 Act, for that purpose. Meetings of 
Shareholders shall also be called by the Secretary upon the written request 
of the holders of Shares entitled to vote not less than twenty-five percent 
(25%) of all the votes entitled to be cast at such meeting, except to the 
extent otherwise required by Section 16(c) of the 1940 Act, as made 
applicable to the Trust by the provisions of Section 2.3 of the Declaration. 
Such request shall state the purpose or purposes of such meeting and the 
matters proposed to be acted on thereat. Except to the extent otherwise 
required by Section 16(c) of the 1940 Act, as made applicable to the Trust by 
the provisions of Section 2.3 of the Declaration, the Secretary shall inform 
such Shareholders of the reasonable estimated cost of preparing and mailing 
such notice of the meeting, and upon payment to the Trust of such costs, the 
Secretary shall give notice stating the purpose or purposes of the meeting to 
all entitled to vote at such meeting. No meeting need be called upon the 
request of the holders of Shares entitled to cast less than a majority of all 
votes entitled to be cast at such meeting, to consider any matter which is 
substantially the same as a matter voted upon at any meeting of Shareholders 
held during the preceding twelve months. 

   SECTION 3.3. NOTICE OF MEETINGS. Written or printed notice of every 
Shareholders' meeting stating the place, date, and purpose or purposes 
thereof, shall be given by the Secretary not less than ten (10) nor more than 
ninety (90) days before such meeting to each Shareholder entitled to vote at 
such meeting. Such notice shall be deemed to be given when deposited in the 
United States mail, postage prepaid, directed to the Shareholder at his 
address as it appears on the records of the Trust. 

   SECTION 3.4. QUORUM AND ADJOURNMENT OF MEETINGS. Except as otherwise 
provided by law, by the Declaration or by these By-Laws, at all meetings of 
Shareholders the holders of a majority of the Shares 


<PAGE>

issued and outstanding and entitled to vote thereat, present in person or 
represented by proxy, shall be requisite and shall constitute a quorum for 
the transaction of business. In the absence of a quorum, the Shareholders 
present or represented by proxy and entitled to vote thereat shall have power 
to adjourn the meeting from time to time. Any adjourned meeting may be held 
as adjourned without further notice. At any adjourned meeting at which a 
quorum shall be present, any business may be transacted as if the meeting had 
been held as originally called. 

   SECTION 3.5. VOTING RIGHTS, PROXIES. At each meeting of Shareholders, each 
holder of record of Shares entitled to vote thereat shall be entitled to one 
vote in person or by proxy, executed in writing by the Shareholder or his 
duly authorized attorney-in-fact, for each Share of beneficial interest of 
the Trust and for the fractional portion of one vote for each fractional 
Share entitled to vote so registered in his name on the records of the Trust 
on the date fixed as the record date for the determination of Shareholders 
entitled to vote at such meeting. No proxy shall be valid after eleven months 
from its date, unless otherwise provided in the proxy. At all meetings of 
Shareholders, unless the voting is conducted by inspectors, all questions 
relating to the qualification of voters and the validity of proxies and the 
acceptance or rejection of votes shall be decided by the chairman of the 
meeting. Pursuant to a resolution of a majority of the Trustees, proxies may 
be solicited in the name of one or more Trustees or Officers of the Trust. 

   SECTION 3.6. VOTE REQUIRED. Except as otherwise provided by law, by the 
Declaration of Trust, or by these By-Laws, at each meeting of Shareholders at 
which a quorum is present, all matters shall be decided by Majority 
Shareholder Vote. 

   SECTION 3.7. INSPECTORS OF ELECTION. In advance of any meeting of 
Shareholders, the Trustees may appoint Inspectors of Election to act at the 
meeting or any adjournment thereof. If Inspectors of Election are not so 
appointed, the chairman of any meeting of Shareholders may, and on the 
request of any Shareholder or his proxy shall, appoint Inspectors of Election 
of the meeting. In case any person appointed as Inspector fails to appear or 
fails or refuses to act, the vacancy may be filled by appointment made by the 
Trustees in advance of the convening of the meeting or at the meeting by the 
person acting as chairman. The Inspectors of Election shall determine the 
number of Shares outstanding, the Shares represented at the meeting, the 
existence of a quorum, the authenticity, validity and effect of proxies, 
shall receive votes, ballots or consents, shall hear and determine all 
challenges and questions in any way arising in connection with the right to 
vote, shall count and tabulate all votes or consents, determine the results, 
and do such other acts as may be proper to conduct the election or vote with 
fairness to all Shareholders. On request of the chairman of the meeting, or 
of any Shareholder or his proxy, the Inspectors of Election shall make a 
report in writing of any challenge or question or matter determined by them 
and shall execute a certificate of any facts found by them. 

   SECTION 3.8. INSPECTION OF BOOKS AND RECORDS. Shareholders shall have such 
rights and procedures of inspection of the books and records of the Trust as 
are granted to Shareholders under the Corporations and Associations Law of 
the State of Maryland. 

   SECTION 3.9. ACTION BY SHAREHOLDERS WITHOUT MEETING. Except as otherwise 
provided by law, the provisions of these By-Laws relating to notices and 
meetings to the contrary notwithstanding, any action required or permitted to 
be taken at any meeting of Shareholders may be taken without a meeting if a 
majority of the Shareholders entitled to vote upon the action consent to the 
action in writing and such consents are filed with the records of the Trust. 
Such consent shall be treated for all purposes as a vote taken at a meeting 
of Shareholders. 

   SECTION 3.10. PRESENCE AT MEETINGS. Presence at meetings of shareholders 
requires physical attendance by the shareholder or his or her proxy at the 
meeting site and does not encompass attendance by telephonic or other 
electronic means. 

                                  ARTICLE IV 
                                   TRUSTEES 

   SECTION 4.1. MEETINGS OF THE TRUSTEES. The Trustees may in their 
discretion provide for regular or special meetings of the Trustees. Regular 
meetings of the Trustees may be held at such time and place as 


                                          2


<PAGE>

shall be determined from time to time by the Trustees without further notice. 
Special meetings of the Trustees may be called at any time by the President 
and shall be called by the President or the Secretary upon the written 
request of any two (2) Trustees. 

   SECTION 4.2. NOTICE OF SPECIAL MEETINGS. Written notice of special 
meetings of the Trustees, stating the place, date and time thereof, shall be 
given not less than two (2) days before such meeting to each Trustee, 
personally, by telegram, by mail, or by leaving such notice at his place of 
residence or usual place of business. If mailed, such notice shall be deemed 
to be given when deposited in the United States mail, postage prepaid, 
directed to the Trustee at his address as it appears on the records of the 
Trust. Subject to the provisions of the 1940 Act, notice or waiver of notice 
need not specify the purpose of any special meeting. 

   SECTION 4.3. TELEPHONE MEETINGS. Subject to the provisions of the 1940 
Act, any Trustee, or any member or members of any committee designated by the 
Trustees, may participate in a meeting of the Trustees, or any such 
committee, as the case may be, by means of a conference telephone or similar 
communications equipment if all persons participating in the meeting can hear 
each other at the same time. Participation in a meeting by these means 
constitutes presence in person at the meeting. 

   SECTION 4.4. QUORUM, VOTING AND ADJOURNMENT OF MEETINGS. At all meetings 
of the Trustees, a majority of the Trustees shall be requisite to and shall 
constitute a quorum for the transaction of business. If a quorum is present, 
the affirmative vote of a majority of the Trustees present shall be the act 
of the Trustees, unless the concurrence of a greater proportion is expressly 
required for such action by law, the Declaration or these By-Laws. If at any 
meeting of the Trustees there be less than a quorum present, the Trustees 
present thereat may adjourn the meeting from time to time, without notice 
other than announcement at the meeting, until a quorum shall have been 
obtained. 

   SECTION 4.5. ACTION BY TRUSTEES WITHOUT MEETING. The provisions of these 
By-Laws covering notices and meetings to the contrary notwithstanding, and 
except as required by law, any action required or permitted to be taken at 
any meeting of the Trustees may be taken without a meeting if a consent in 
writing setting forth the action shall be signed by all of the Trustees 
entitled to vote upon the action and such written consent is filed with the 
minutes of proceedings of the Trustees. 

   SECTION 4.6. EXPENSES AND FEES. Each Trustee may be allowed expenses, if 
any, for attendance at each regular or special meeting of the Trustees, and 
each Trustee who is not an officer or employee of the Trust or of its 
investment manager or underwriter or of any corporate affiliate of any of 
said persons shall receive for services rendered as a Trustee of the Trust 
such compensation as may be fixed by the Trustees. Nothing herein contained 
shall be construed to preclude any Trustee from serving the Trust in any 
other capacity and receiving compensation therefor. 

   SECTION 4.7.  EXECUTION OF INSTRUMENTS AND DOCUMENTS AND SIGNING OF CHECKS 
AND OTHER OBLIGATIONS AND TRANSFERS. All instruments, documents and other 
papers shall be executed in the name and on behalf of the Trust and all 
checks, notes, drafts and other obligations for the payment of money by the 
Trust shall be signed, and all transfer of securities standing in the name of 
the Trust shall be executed, by the Chairman, the President, any Vice 
President or the Treasurer or by any one or more officers or agents of the 
Trust as shall be designated for that purpose by vote of the Trustees; 
notwithstanding the above, nothing in this Section 4.7 shall be deemed to 
preclude the electronic authorization, by designated persons, of the Trust's 
Custodian (as described herein in Section 9.1) to transfer assets of the 
Trust, as provided for herein in Section 9.1. 

   SECTION 4.8. INDEMNIFICATION OF TRUSTEES, OFFICERS, EMPLOYEES AND 
AGENTS. (a) The Trust shall indemnify any person who was or is a party or is 
threatened to be made a party to any threatened, pending, or completed 
action, suit or proceeding, whether civil, criminal, administrative or 
investigative (other than an action by or in the right of the Trust) by 
reason of the fact that he is or was a Trustee, officer, employee, or agent 
of the Trust. The indemnification shall be against expenses, including 
attorneys' fees, judgments, fines, and amounts paid in settlement, actually 
and reasonably incurred by him in connection with the action, suit, or 
proceeding, if he acted in good faith and in a manner he reasonably believed 
to be in or not opposed to the best interests of the Trust, and, with respect 
to any criminal action 


                                          3


<PAGE>

or proceeding, had no reasonable cause to believe his conduct was unlawful. 
The termination of any action, suit or proceeding by judgment, order, 
settlement, conviction, or upon a plea of nolo contendere or its equivalent, 
shall not, of itself, create a presumption that the person did not act in 
good faith and in a manner which he reasonably believed to be in or not 
opposed to the best interests of the Trust, and, with respect to any criminal 
action or proceeding, had reasonable cause to believe that his conduct was 
unlawful. 

   (b) The Trust shall indemnify any person who was or is a party or is 
threatened to be made a party to any threatened, pending or completed action 
or suit by or on behalf of the Trust to obtain a judgment or decree in its 
favor by reason of the fact that he is or was a Trustee, officer, employee, 
or agent of the Trust. The indemnification shall be against expenses, 
including attorneys' fees actually and reasonably incurred by him in 
connection with the defense or settlement of the action or suit, if he acted 
in good faith and in a manner he reasonably believed to be in or not opposed 
to the best interests of the Trust; except that no indemnification shall be 
made in respect of any claim, issue, or matter as to which the person has 
been adjudged to be liable for negligence or misconduct in the performance of 
his duty to the Trust, except to the extent that the court in which the 
action or suit was brought, or a court of equity in the county in which the 
Trust has its principal office, determines upon application that, despite the 
adjudication of liability but in view of all circumstances of the case, the 
person is fairly and reasonably entitled to indemnity for those expenses 
which the court shall deem proper, provided such Trustee, officer, employee 
or agent is not adjudged to be liable by reason of his willful misfeasance, 
bad faith, gross negligence or reckless disregard of the duties involved in 
the conduct of his office. 

   (c) To the extent that a Trustee, officer, employee, or agent of the Trust 
has been successful on the merits or otherwise in defense of any action, suit 
or proceeding referred to in subsection (a) or (b) or in defense of any 
claim, issue or matter therein, he shall be indemnified against expenses, 
including attorneys' fees, actually and reasonably incurred by him in 
connection therewith. 

   (d) (1) Unless a court orders otherwise, any indemnification under 
subsections (a) or (b) of this section may be made by the Trust only as 
authorized in the specific case after a determination that indemnification of 
the Trustee, officer, employee, or agent is proper in the circumstances 
because he has met the applicable standard of conduct set forth in 
subsections (a) or (b). 

       (2) The determination shall be made: 

       (i) By the Trustees, by a majority vote of a quorum which consists of 
    Trustees who were not parties to the action, suit or proceeding; or 

      (ii) If the required quorum is not obtainable, or if a quorum of 
    disinterested Trustees so directs, by independent legal counsel in a 
    written opinion; or 

     (iii) By the Shareholders. 

       (3) Notwithstanding any provision of this Section 4.8, no person shall 
    be entitled to indemnification for any liability, whether or not there is 
    an adjudication of liability, arising by reason of willful misfeasance, 
    bad faith, gross negligence, or reckless disregard of duties as described 
    in Section 17(h) and (i) of the Investment Company Act of 1940 
    ("disabling conduct"). A person shall be deemed not liable by reason of 
    disabling conduct if, either: 

       (i) a final decision on the merits is made by a court or other body 
    before whom the proceeding was brought that the person to be indemnified 
    ("indemnitee") was not liable by reason of disabling conduct; or 

      (ii) in the absence of such a decision, a reasonable determination, 
    based upon a review of the facts, that the indemnitee was not liable by 
    reason of disabling conduct, is made by either-- 

            (A) a majority of a quorum of Trustees who are neither "interested 
         persons" of the Trust, as defined in Section 2(a)(19) of the 
         Investment Company Act of 1940, nor parties to the action, suit or 
         proceeding, or 

            (B) an independent legal counsel in a written opinion. 


                                          4

<PAGE>

   (e) Expenses, including attorneys' fees, incurred by a Trustee, officer, 
employee or agent of the Trust in defending a civil or criminal action, suit 
or proceeding may be paid by the Trust in advance of the final disposition 
thereof if: 

        (1) authorized in the specific case by the Trustees; and 

        (2) the Trust receives an undertaking by or on behalf of the Trustee, 
    officer, employee or agent of the Trust to repay the advance if it is not 
    ultimately determined that such person is entitled to be indemnified by 
    the Trust; and 

        (3) either, (i) such person provides a security for his undertaking, 
    or 

           (ii) the Trust is insured against losses by reason of any lawful 
         advances, or 

          (iii) a determination, based on a review of readily available 
         facts, that there is reason to believe that such person ultimately 
         will be found entitled to indemnification, is made by either-- 

                (A) a majority of a quorum which consists of Trustees who are 
             neither "interested persons" of the Trust, as defined in Section 
             2(a)(19) of the 1940 Act, nor parties to the action, suit or 
             proceeding, or 

                (B) an independent legal counsel in a written opinion. 

   (f) The indemnification provided by this Section shall not be deemed 
exclusive of any other rights to which a person may be entitled under any 
by-law, agreement, vote of Shareholders or disinterested Trustees or 
otherwise, both as to action in his official capacity and as to action in 
another capacity while holding the office, and shall continue as to a person 
who has ceased to be a Trustee, officer, employee, or agent and inure to the 
benefit of the heirs, executors and administrators of such person; provided 
that no person may satisfy any right of indemnity or reimbursement granted 
herein or to which he may be otherwise entitled except out of the property of 
the Trust, and no Shareholder shall be personally liable with respect to any 
claim for indemnity or reimbursement or otherwise. 

   (g) The Trust may purchase and maintain insurance on behalf of any person 
who is or was a Trustee, officer, employee, or agent of the Trust, against 
any liability asserted against him and incurred by him in any such capacity, 
or arising out of his status as such. However, in no event will the Trust 
purchase insurance to indemnify any officer or Trustee against liability for 
any act for which the Trust itself is not permitted to indemnify him. 

   (h) Nothing contained in this Section shall be construed to protect any 
Trustee or officer of the Trust against any liability to the Trust or to its 
security holders to which he would otherwise be subject by reason of willful 
misfeasance, bad faith, gross negligence or reckless disregard of the duties 
involved in the conduct of his office. 

                                  ARTICLE V 
                                  COMMITTEES 

   SECTION 5.1. EXECUTIVE AND OTHER COMMITTEES. The Trustees, by resolution 
adopted by a majority of the Trustees, may designate an Executive Committee 
and/or committees, each committee to consist of two (2) or more of the 
Trustees of the Trust and may delegate to such committees, in the intervals 
between meetings of the Trustees, any or all of the powers of the Trustees in 
the management of the business and affairs of the Trust. In the absence of 
any member of any such committee, the members thereof present at any meeting, 
whether or not they constitute a quorum, may appoint a Trustee to act in 
place of such absent member. Each such committee shall keep a record of its 
proceedings. 

   The Executive Committee and any other committee shall fix its own rules or 
procedure, but the presence of at least fifty percent (50%) of the members of 
the whole committee shall in each case be necessary to constitute a quorum of 
the committee and the affirmative vote of the majority of the members of the 
committee present at the meeting shall be necessary to take action. 


                                          5

<PAGE>

   All actions of the Executive Committee shall be reported to the Trustees 
at the meeting thereof next succeeding to the taking of such action. 

   SECTION 5.2. ADVISORY COMMITTEE. The Trustees may appoint an advisory 
committee which shall be composed of persons who do not serve the Trust in 
any other capacity and which shall have advisory functions with respect to 
the investments of the Trust but which shall have no power to determine that 
any security or other investment shall be purchased, sold or otherwise 
disposed of by the Trust. The number of persons constituting any such 
advisory committee shall be determined from time to time by the Trustees. The 
members of any such advisory committee may receive compensation for their 
services and may be allowed such fees and expenses for the attendance at 
meetings as the Trustees may from time to time determine to be appropriate. 

   SECTION 5.3. COMMITTEE ACTION WITHOUT MEETING. The provisions of these 
By-Laws covering notices and meetings to the contrary notwithstanding, and 
except as required by law, any action required or permitted to be taken at 
any meeting of any Committee of the Trustees appointed pursuant to Section 
5.1 of these By-Laws may be taken without a meeting if a consent in writing 
setting forth the action shall be signed by all members of the Committee 
entitled to vote upon the action and such written consent is filed with the 
records of the proceedings of the Committee. 

                                  ARTICLE VI 
                                   OFFICERS 

   SECTION 6.1. EXECUTIVE OFFICERS. The executive officers of the Trust shall 
be a Chairman, a President, one or more Vice Presidents, a Secretary and a 
Treasurer. The Chairman shall be selected from among the Trustees but none of 
the other executive officers need be a Trustee. Two or more offices, except 
those of President and any Vice President, may be held by the same person, 
but no officer shall execute, acknowledge or verify any instrument in more 
than one capacity. The executive officers of the Trust shall be elected 
annually by the Trustees and each executive officer so elected shall hold 
office until his successor is elected and has qualified. 

   SECTION 6.2. OTHER OFFICERS AND AGENTS. The Trustees may also elect one or 
more Assistant Vice Presidents, Assistant Secretaries and Assistant 
Treasurers and may elect, or may delegate to the President the power to 
appoint, such other officers and agents as the Trustees shall at any time or 
from time to time deem advisable. 

   SECTION 6.3. TERM AND REMOVAL AND VACANCIES. Each officer of the Trust 
shall hold office until his successor is elected and has qualified. Any 
officer or agent of the Trust may be removed by the Trustees whenever, in 
their judgment, the best interests of the Trust will be served thereby, but 
such removal shall be without prejudice to the contractual rights, if any, of 
the person so removed. 

   SECTION 6.4. COMPENSATION OF OFFICERS. The compensation of officers and 
agents of the Trust shall be fixed by the Trustees, or by the President to 
the extent provided by the Trustees with respect to officers appointed by the 
President. 

   SECTION 6.5. POWER AND DUTIES. All officers and agents of the Trust, as 
between themselves and the Trust, shall have such authority and perform such 
duties in the management of the Trust as may be provided in or pursuant to 
these By-Laws, or to the extent not so provided, as may be prescribed by the 
Trustees; provided, that no rights of any third party shall be affected or 
impaired by any such By-Law or resolution of the Trustees unless he has 
knowledge thereof. 

   SECTION 6.6. THE CHAIRMAN. The Chairman shall preside at all meetings of 
the Shareholders and of the Trustees, shall be a signatory on all Annual and 
Semi-Annual Reports as may be sent to shareholders, and he shall perform such 
other duties as the Trustees may from time to time prescribe. 

   SECTION 6.7. THE PRESIDENT. (a) The President shall be the chief executive 
officer of the Trust; he shall have general and active management of the 
business of the Trust, shall see that all orders and resolutions of the Board 
of Trustees are carried into effect, and, in connection therewith, shall be 
authorized to delegate to one or more Vice Presidents such of his powers and 
duties at such times and in such manner as he may deem advisable. 


                                          6

<PAGE>

   (b) In the absence of the Chairman, the President shall preside at all 
meetings of the shareholders and the Board of Trustees; and he shall perform 
such other duties as the Board of Trustees may from time to time prescribe. 

   SECTION 6.8. THE VICE PRESIDENTS. The Vice Presidents shall be of such 
number and shall have such titles as may be determined from time to time by 
the Trustees. The Vice President, or, if there be more than one, the Vice 
Presidents in the order of their seniority as may be determined from time to 
time by the Trustees or the President, shall, in the absence or disability of 
the President, exercise the powers and perform the duties of the President, 
and he or they shall perform such other duties as the Trustees or the 
President may from time to time prescribe. 

   SECTION 6.9. THE ASSISTANT VICE PRESIDENTS. The Assistant Vice President, 
or, if there be more than one, the Assistant Vice Presidents, shall perform 
such duties and have such powers as may be assigned them from time to time by 
the Trustees or the President. 

   SECTION 6.10. THE SECRETARY. The Secretary shall attend all meetings of 
the Trustees and all meetings of the Shareholders and record all the 
proceedings of the meetings of the Shareholders and of the Trustees in a book 
to be kept for that purpose, and shall perform like duties for the standing 
committees when required. He shall give, or cause to be given, notice of all 
meetings of the Shareholders and special meetings of the Trustees, and shall 
perform such other duties and have such powers as the Trustees, or the 
President, may from time to time prescribe. He shall keep in safe custody the 
seal of the Trust and affix or cause the same to be affixed to any instrument 
requiring it, and, when so affixed, it shall be attested by his signature or 
by the signature of an Assistant Secretary. 

   SECTION 6.11. THE ASSISTANT SECRETARIES. The Assistant Secretary, or, if 
there be more than one, the Assistant Secretaries in the order determined by 
the Trustees or the President, shall, in the absence or disability of the 
Secretary, perform the duties and exercise the powers of the Secretary and 
shall perform such duties and have such other powers as the Trustees or the 
President may from time to time prescribe. 

   SECTION 6.12. THE TREASURER. The Treasurer shall be the chief financial 
officer of the Trust. He shall keep or cause to be kept full and accurate 
accounts of receipts and disbursements in books belonging to the Trust, and 
he shall render to the Trustees and the President, whenever any of them 
require it, an account of his transactions as Treasurer and of the financial 
condition of the Trust; and he shall perform such other duties as the 
Trustees, or the President, may from time to time prescribe. 

   SECTION 6.13. THE ASSISTANT TREASURERS. The Assistant Treasurer, or, if 
there shall be more than one, the Assistant Treasurers in the order 
determined by the Trustees or the President, shall, in the absence or 
disability of the Treasurer, perform the duties and exercise the powers of 
the Treasurer and shall perform such other duties and have such other powers 
as the Trustees, or the President, may from time to time prescribe. 

   SECTION 6.14. DELEGATION OF DUTIES. Whenever an officer is absent or 
disabled, or whenever for any reason the Trustees may deem it desirable, the 
Trustees may delegate the powers and duties of an officer or officers to any 
other officer or officers or to any Trustee or Trustees. 

                                 ARTICLE VII 
                         DIVIDENDS AND DISTRIBUTIONS 

   Subject to any applicable provisions of law and the Declaration, dividends 
and distributions upon the Shares may be declared at such intervals as the 
Trustees may determine, in cash, in securities or other property, or in 
Shares, from any sources permitted by law, all as the Trustees shall from 
time to time determine. 

   Inasmuch as the computation of net income and net profits from the sales 
of securities or other properties for federal income tax purposes may vary 
from the computation thereof on the records of the Trust, the Trustees shall 
have power, in their discretion, to distribute as income dividends and as 
capital gain distributions, respectively, amounts sufficient to enable the 
Trust to avoid or reduce liability for federal income taxes. 


                                          7

<PAGE>

                                 ARTICLE VIII 
                            CERTIFICATES OF SHARES 

   SECTION 8.1. CERTIFICATES OF SHARES. Certificates for Shares of each 
series or class of Shares shall be in such form and of such design as the 
Trustees shall approve, subject to the right of the Trustees to change such 
form and design at any time or from time to time, and shall be entered in the 
records of the Trust as they are issued. Each such certificate shall bear a 
distinguishing number; shall exhibit the holder's name and certify the number 
of full Shares owned by such holder; shall be signed by or in the name of the 
Trust by the President, or a Vice President, and countersigned by the 
Secretary or an Assistant Secretary or the Treasurer and an Assistant 
Treasurer of the Trust; shall be sealed with the seal; and shall contain such 
recitals as may be required by law. Where any certificate is signed by a 
Transfer Agent or by a Registrar, the signature of such officers and the seal 
may be facsimile, printed or engraved. The Trust may, at its option, 
determine not to issue a certificate or certificates to evidence Shares owned 
of record by any Shareholder. 

   In case any officer or officers who shall have signed, or whose facsimile 
signature or signatures shall appear on, any such certificate or certificates 
shall cease to be such officer or officers of the Trust, whether because of 
death, resignation or otherwise, before such certificate or certificates 
shall have been delivered by the Trust, such certificate or certificates 
shall, nevertheless, be adopted by the Trust and be issued and delivered as 
though the person or persons who signed such certificate or certificates or 
whose facsimile signature or signatures shall appear therein had not ceased 
to be such officer or officers of the Trust. 

   No certificate shall be issued for any share until such share is fully 
paid. 

   SECTION 8.2. LOST, STOLEN, DESTROYED AND MUTILATED CERTIFICATES. The 
Trustees may direct a new certificate or certificates to be issued in place 
of any certificate or certificates theretofore issued by the Trust alleged to 
have been lost, stolen or destroyed, upon satisfactory proof of such loss, 
theft, or destruction; and the Trustees may, in their discretion, require the 
owner of the lost, stolen or destroyed certificate, or his legal 
representative, to give to the Trust and to such Registrar, Transfer Agent 
and/or Transfer Clerk as may be authorized or required to countersign such 
new certificate or certificates, a bond in such sum and of such type as they 
may direct, and with such surety or sureties, as they may direct, as 
indemnity against any claim that may be against them or any of them on 
account of or in connection with the alleged loss, theft or destruction of 
any such certificate. 

                                  ARTICLE IX 
                                  CUSTODIAN 

   SECTION 9.1. APPOINTMENT AND DUTIES. The Trust shall at times employ a 
bank or trust company having capital, surplus and undivided profits of at 
least five million dollars ($5,000,000) as custodian with authority as its 
agent, but subject to such restrictions, limitations and other requirements, 
if any, as may be contained in these By-Laws and the 1940 Act: 

       (1) to receive and hold the securities owned by the Trust and deliver 
    the same upon written or electronically transmitted order; 

       (2) to receive and receipt for any moneys due to the Trust and deposit 
    the same in its own banking department or elsewhere as the Trustees may 
    direct; 

       (3) to disburse such funds upon orders or vouchers; 

all upon such basis of compensation as may be agreed upon between the 
Trustees and the custodian. If so directed by a Majority Shareholder Vote, 
the custodian shall deliver and pay over all property of the Trust held by it 
as specified in such vote. 

   The Trustees may also authorize the custodian to employ one or more 
sub-custodians from time to time to perform such of the acts and services of 
the custodian and upon such terms and conditions as may be agreed upon 
between the custodian and such sub-custodian and approved by the Trustees. 


                                          8

<PAGE>

   SECTION 9.2. CENTRAL CERTIFICATE SYSTEM. Subject to such rules, 
regulations and orders as the Commission may adopt, the Trustees may direct 
the custodian to deposit all or any part of the securities owned by the Trust 
in a system for the central handling of securities established by a national 
securities exchange or a national securities association registered with the 
Commission under the Securities Exchange Act of 1934, or such other person as 
may be permitted by the Commission, or otherwise in accordance with the 1940 
Act, pursuant to which system all securities of any particular class or 
series of any issuer deposited within the system are treated as fungible and 
may be transferred or pledged by bookkeeping entry without physical delivery 
of such securities, provided that all such deposits shall be subject to 
withdrawal only upon the order of the Trust. 

                                  ARTICLE X 
                               WAIVER OF NOTICE 

   Whenever any notice of the time, place or purpose of any meeting of 
Shareholders, Trustees, or of any committee is required to be given in 
accordance with law or under the provisions of the Declaration or these 
By-Laws, a waiver thereof in writing, signed by the person or persons 
entitled to such notice and filed with the records of the meeting, whether 
before or after the holding thereof, or actual attendance at the meeting of 
shareholders, Trustees or committee, as the case may be, in person, shall be 
deemed equivalent to the giving of such notice to such person. 

                                  ARTICLE XI 
                                MISCELLANEOUS 

   SECTION 11.1. LOCATION OF BOOKS AND RECORDS. The books and records of the 
Trust may be kept outside the Commonwealth of Massachusetts at such place or 
places as the Trustees may from time to time determine, except as otherwise 
required by law. 

   SECTION 11.2. RECORD DATE. The Trustees may fix in advance a date as the 
record date for the purpose of determining Shareholders entitled to notice 
of, or to vote at, any meeting of Shareholders, or Shareholders entitled to 
receive payment of any dividend or the allotment of any rights, or in order 
to make a determination of Shareholders for any other proper purpose. Such 
date, in any case, shall be not more than ninety (90) days, and in case of a 
meeting of Shareholders not less than ten (10) days, prior to the date on 
which particular action requiring such determination of Shareholders is to be 
taken. In lieu of fixing a record date the Trustees may provide that the 
transfer books shall be closed for a stated period but not to exceed, in any 
case, twenty (20) days. If the transfer books are closed for the purpose of 
determining Shareholders entitled to notice of a vote at a meeting of 
Shareholders, such books shall be closed for at least ten (10) days 
immediately preceding such meeting. 

   SECTION 11.3. SEAL. The Trustees shall adopt a seal, which shall be in 
such form and shall have such inscription thereon as the Trustees may from 
time to time provide. The seal of the Trust may be affixed to any document, 
and the seal and its attestation may be lithographed, engraved or otherwise 
printed on any document with the same force and effect as if it had been 
imprinted and attested manually in the same manner and with the same effect 
as if done by a Massachusetts business corporation under Massachusetts law. 

   SECTION 11.4. FISCAL YEAR. The fiscal year of the Trust shall end on such 
date as the Trustees may by resolution specify, and the Trustees may by 
resolution change such date for future fiscal years at any time and from time 
to time. 

   SECTION 11.5. ORDERS FOR PAYMENT OF MONEY. All orders or instructions for 
the payment of money of the Trust, and all notes or other evidences of 
indebtedness issued in the name of the Trust, shall be signed by such officer 
or officers or such other person or persons as the Trustees may from time to 
time designate, or as may be specified in or pursuant to the agreement 
between the Trust and the bank or trust company appointed as Custodian of the 
securities and funds of the Trust. 


                                          9

<PAGE>

                                 ARTICLE XII 
                     COMPLIANCE WITH FEDERAL REGULATIONS 

   The Trustees are hereby empowered to take such action as they may deem to 
be necessary, desirable or appropriate so that the Trust is or shall be in 
compliance with any federal or state statute, rule or regulation with which 
compliance by the Trust is required. 

                                 ARTICLE XIII 
                                  AMENDMENTS 

   These By-Laws may be amended, altered, or repealed, or new By-Laws may be 
adopted, (a) by a Majority Shareholder Vote, or (b) by the Trustees; 
provided, however, that no By-Law may be amended, adopted or repealed by the 
Trustees if such amendment, adoption or repeal requires, pursuant to law, the 
Declaration, or these By-Laws, a vote of the Shareholders. The Trustees shall 
in no event adopt By-Laws which are in conflict with the Declaration, and any 
apparent inconsistency shall be construed in favor of the related provisions 
in the Declaration. 

                                 ARTICLE XIV 
                             DECLARATION OF TRUST 

   The Declaration of Trust establishing Dean Witter Utilities Fund, dated 
December 8, 1987, a copy of which is on file in the office of the Secretary 
of the Commonwealth of Massachusetts, provides that the name Dean Witter 
Utilities Fund refers to the Trustees under the Declaration collectively as 
Trustees, but not as individuals or personally; and no Trustee, Shareholder, 
officer, employee or agent of Dean Witter Utilities Fund shall be held to any 
personal liability, nor shall resort be had to their private property for the 
satisfaction of any obligation or claim or otherwise, in connection with the 
affairs of said Dean Witter Utilities Fund, but the Trust Estate only shall 
be liable. 


                                          10

<PAGE>

                         AMENDMENT TO CUSTODY AGREEMENT


     Amendment made as of this 17th day of April, 1996 by and between 
Dean Witter Utilities Fund (the "Fund") and The Bank of New York (the
"Custodian") to the Custody Agreement between the Fund and the Custodian
dated February 5, 1993 (the "Custody Agreement").  The Custody Agreement
is hereby amended as follows:

     Article XV Section 8 of the Custody Agreement shall be deleted and be
replaced by Sections 8.(a), 8.(b) and 8.(c) as set forth below:

     "8.  (a)  The Custodian will use reasonable care with respect to its
obligations under this Agreement and the safekeeping of Securities and moneys
owned by the Fund.  The Custodian shall indemnify the Fund against and save the
Fund harmless from all liability, claims, losses and demands whatsoever,
including attorneys' fees, howsoever arising or incurred as the result of the
failure of a subcustodian which is a banking institution located in a foreign
country and identified on Schedule A attached hereto and as amended from time to
time upon mutual agreement of the parties (each, a "Subcustodian") to exercise
reasonable care with respect to the safekeeping of such Securities and moneys to
the same extent that the Custodian would be liable to the Fund if the Custodian
were holding such securities and moneys in New York.  In the event of any loss
to the Fund by reason of the failure of the Custodian or a Subcustodian to
utilize reasonable care, the Custodian shall be liable to the Fund only to the
extent of the Fund's direct damages, to be determined based on the market value
of the Securities and moneys which are the subject of the loss at the date of
discovery of such loss and without reference to any special conditions or
circumstances.

     8.   (b)  The Custodian shall not be liable for any loss which results from
(i) the general risk of investing, or (ii) investing or holding Securities and
moneys in a particular country including, but not limited to, losses resulting
from nationalization, expropriation or other governmental actions; regulation of
the banking or securities industry; currency restrictions, devaluations or
fluctuations; or market conditions which prevent the orderly execution of
securities transactions or affect the value of Securities or moneys.

     8.   (c)  Neither party shall be liable to the other for any loss due to
forces beyond its control including, but not limited to, strikes or work
stoppages, acts of war or terrorism, insurrection, revolution, nuclear fusion,
fission or radiation, or acts of God."

<PAGE>


     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their respective Officers, thereunto duly authorized and their
respective seals to be hereunto affixed, as of the day and year first above
written.

                                        DEAN WITTER UTILITIES FUND



[SEAL]                                       By:  /s/ David A. Hughey
                                                 ------------------------------
                                                      David A. Hughey
Attest:

/s/ R.M. Scanlan
- ------------------------------
    R.M. Scanlan
                                             THE BANK OF NEW YORK

[SEAL]                                       By:  /s/ S. Grunston
                                                 -------------------------------
                                                      S. Grunston
Attest:

/s/ V. Blazewicz
- ------------------------------
    V. Blazewicz
<PAGE>

                                   SCHEDULE A


COUNTRY/MARKET                     SUBCUSTODIAN
- --------------                     ------------

Argentina                          The Bank of Boston
Australia                          ANZ Banking Group Limited
Austria                            Girocredit Bank AG
Bangladesh*                        Standard Chartered Bank
Belgium                            Banque Bruxelles Lambert
Botswana*                          Stanbic Bank Botswana Ltd.
Brazil                             The Bank of Boston
Canada                             Royal Trust/Royal Bank of Canada
Chile                              The Bank of Boston/Banco de Chile
China                              Standard Chartered Bank
Colombia                           Citibank, N.A.
Denmark                            Den Danske Bank
Euromarket                         CEDEL
                                   Euroclear
                                   First Chicago Clearing Centre
Finland                            Union Bank of Finland
France                             Banque Paribas/Credit Commercial de France
Germany                            Dresdner Bank A.G.
Ghana*                             Merchant Bank Ghana Ltd.
Greece                             Alpha Credit Bank
Hong Kong                          Hong Kong and Shanghai Banking Corp.
Indonesia                          Hong Kong and Shanghai Banking Corp.
Ireland                            Allied Irish Bank
Israel                             Israel Discount Bank
Italy                              Banca Commerciale Italiana
Japan                              Yasuda Trust & Banking Co., Lt.
Korea                              Bank of Seoul
Luxembourg                         Kredietbank S.A.
Malaysia                           Hong Kong Bank Malaysia Berhad
Mexico                             Banco Nacional de Mexico (Banamex)
Netherlands                        Mees Pierson
New Zealand                        ANZ Banking Group Limited
Norway                             Den Norske Bank
Pakistan                           Standard Chartered Bank
Peru                               Citibank, N.A.
Philippines                        Hong Kong and Shanghai Banking Corp.
Poland                             Bank Handlowy w Warsawie
Portugal                           Banco Comercial Portugues
Singapore                          United Overseas Bank
South Africa                       Standard Bank of South Africa Limited
Spain                              Banco Bilbao Vizcaya
Sri Lanka                          Standard Chartered Bank

<PAGE>

                                   SCHEDULE A


COUNTRY/MARKET                     SUBCUSTODIAN
- --------------                     ------------

Sweden                             Skandinaviska Enskilda Banken
Switzerland                        Union Bank of Switerzland
Taiwan                             Hong Kong and Shanghai Banking Corp.
Thailand                           Siam Commercial Bank
Turkey                             Citibank, N.A.
United Kingdom                     The Bank of New York
United States                      The Bank of New York
Uruguay                            The Bank of Boston
Venezuela                          Citibank, N.A.
Zimbabwe*                          Stanbic Bank Zimbabwe Ltd.






*Not yet 17(f)5 compliant

<PAGE>

                      CONSENT OF INDEPENDENT ACCOUNTANTS

     We hereby consent to the use in the Statement of Additional Information 
constituting part of this Post-Effective Amendment No. 10 to the registration 
statement on Form N-1A (the "Registration Statement") of our report dated 
February 6, 1997, relating to the financial statements and financial highlights 
of Dean Witter Utilities Fund, which appears in such Statement of Additional 
Information, and to the incorporation by reference of our report into the 
Prospectus which constitutes part of this Registration Statement. We also 
consent to the references to us under the headings "Independent Accountants"
and "Experts" in such Statement of Additional Information and to the reference
to us under the heading "Financial Highlights" in such Prospectus.


/s/ PRICE WATERHOUSE LLP
1177 Avenue of the Americas
New York, New York 10036
March 21, 1997



<PAGE>


         SCHEDULE FOR COMPUTATIONS OF PERFORMANCE QUOTATIONS
         UTILITIES FUND




(A) AVERAGE ANNUAL TOTAL RETURNS (I.E. STANDARDIZED COMPUTATIONS)

               _                              _
              |        ----------------------  |
FORMULA:      |       |       |                |
              |  /\ n |      ERV               |
         T  = |    \  | -------------          |  - 1
              |     \ |       P                |
              |      \|                        |
              |_                              _|

         T = AVERAGE ANNUAL COMPOUND RETURN
         n = NUMBER OF YEARS
         ERV = ENDING REDEEMABLE VALUE
         P = INITIAL INVESTMENT

                                                              
                                               (A)            
  $1,000       ERV AS OF      NUMBER OF    AVERAGE ANNUAL     
INVESTED - P   31-Dec-96      YEARS - n    COMPOUND RETURN - T
- ------------   ---------      ---------    -------------------
31-Dec-95        $999.90              1                (0.01%)

31-Dec-91      $1,470.20           5.00                  8.01%

30-Apr-88      $2,374.00           8.67                 10.48%

(B) AVERAGE ANNUAL TOTAL RETURNS WITHOUT DEDUCTION FOR APPLICABLE
    SALES CHARGE  (NON STANDARD COMPUTATIONS)

(C) TOTAL RETURN WITHOUT DEDUCTION FOR APPLICABLE SALES CHARGE
    (NON STANDARD COMPUTATIONS)

               _                              _
              |        ----------------------  |
FORMULA:      |       |                        |
              |  /\ n |      EV                |
         t  = |    \  | -------------          |  - 1
              |     \ |      P                 |
              |      \|                        |
              |_                              _|

                       EV
         TR  =     ----------     - 1
                       P


    t = AVERAGE ANNUAL COMPOUND RETURN 
       (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
    n = NUMBER OF YEARS
    EV = ENDING VALUE (NO DEDUCTION FOR APPLICABLE SALES CHARGE)
    P = INITIAL INVESTMENT
    TR = TOTAL RETURN (NO DEDUCTION FOR APPLICABLE SALES CHARGE)

<TABLE>
<CAPTION>

                                        (C)                                        (B)
  $1,000           EV AS OF            TOTAL               NUMBER OF           AVERAGE ANNUAL 
INVESTED - P       31-Dec-96           RETURN - TR         YEARS - n           COMPOUND RETURN - t
- ------------       ---------           -----------         ---------           -------------------
<S>                <C>                 <C>                 <C>                 <C>
31-Dec-95          $1,049.90                4.99%                  1                    4.99%

31-Dec-91          $1,490.20               49.02%               5.00                    8.31%

30-Apr-88          $2,374.00              137.40%               8.67                   10.48%
</TABLE>

(D) GROWTH OF $10,000
(E) GROWTH OF $50,000
(F) GROWTH OF $100,000

FORMULA: G= (TR+1)*P
         G= GROWTH OF INITIAL INVESTMENT
         P= INITIAL INVESTMENT
         TR= TOTAL RETURN SINCE INCEPTION 

<TABLE>
<CAPTION>

$10,000       TOTAL          (D)   GROWTH OF            (E)   GROWTH OF          (F)   GROWTH OF
INVESTED - P  RETURN - TR    $10,000 INVESTMENT - G     $50,000 INVESTMENT-G     $100,000 INVESTMENT - G
- ------------  -----------    ----------------------     --------------------     -----------------------
<S>           <C>            <C>                        <C>                      <C>
30-Apr-88       137.40              $23,740                    $118,700                  $237,400

</TABLE>
<PAGE>

                      SCHEDULE OF COMPUTATION OF YIELD QUOTATION
                           DEAN WITTER UTILITIES PORTFOLIO
                                30 day as of 12/31/96


                             6
YIELD = 2{ [ ((a-b)/c d) + 1] -1}



WHERE:    a = Dividends and interest earned during the period

          b = Expenses accrued for the period

          c = The average daily number of shares outstanding during the period
              that were entitled to receive dividends

          d = The maximum offering price per share on the last day of the
              period


                                                                        6
YIELD = 2{ [(( 11,312,338.85 - 3,800,382.17)/176,145,910.631 X 15.22)+1] - 1}

      = 3.39%

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 6
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                    2,013,362,304
<INVESTMENTS-AT-VALUE>                   2,669,850,770
<RECEIVABLES>                               18,974,609
<ASSETS-OTHER>                                  34,978
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                           2,688,860,357
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                   11,915,376
<TOTAL-LIABILITIES>                         11,915,376
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                 2,002,828,386
<SHARES-COMMON-STOCK>                      175,844,684
<SHARES-COMMON-PRIOR>                      219,236,166
<ACCUMULATED-NII-CURRENT>                      764,341
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                     16,863,788
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                   656,488,466
<NET-ASSETS>                             2,676,944,981
<DIVIDEND-INCOME>                          106,841,277
<INTEREST-INCOME>                           48,906,955
<OTHER-INCOME>                                       0
<EXPENSES-NET>                              48,566,780
<NET-INVESTMENT-INCOME>                    107,181,452
<REALIZED-GAINS-CURRENT>                    38,088,040
<APPREC-INCREASE-CURRENT>                 (21,800,001)
<NET-CHANGE-FROM-OPS>                      123,469,491
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                (112,326,026)
<DISTRIBUTIONS-OF-GAINS>                  (13,000,035)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     20,469,306
<NUMBER-OF-SHARES-REDEEMED>               (70,657,866)
<SHARES-REINVESTED>                          6,797,078
<NET-CHANGE-IN-ASSETS>                   (643,926,267)
<ACCUMULATED-NII-PRIOR>                      5,908,915
<ACCUMULATED-GAINS-PRIOR>                  (8,224,217)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                       15,787,095
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                             48,566,780
<AVERAGE-NET-ASSETS>                     2,955,178,412
<PER-SHARE-NAV-BEGIN>                            15.15
<PER-SHARE-NII>                                    .56
<PER-SHARE-GAIN-APPREC>                            .16
<PER-SHARE-DIVIDEND>                             (.58)
<PER-SHARE-DISTRIBUTIONS>                        (.07)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.22
<EXPENSE-RATIO>                                   1.64
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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