TCW/DW LATIN AMERICAN GROWTH FUND
497, 1997-04-07
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<PAGE>
            [LOGO]
                      LATIN AMERICAN
                      GROWTH FUND
 
                           PROSPECTUS
                           MARCH 31, 1997
 
TCW/DW  Latin American Growth Fund (the  "Fund") is an open-end, non-diversified
management investment company, whose  investment objective is long-term  capital
appreciation.  The Fund seeks  to achieve its  investment objective by investing
primarily in equity securities of Latin American issuers. The Fund may invest up
to 35% of its  total assets in  high risk debt securities  which are unrated  or
rated  below  investment grade.  Investments  in Latin  America  involve certain
special risk factors and therefore may not be suitable for all investors.
 
Shares of  the Fund  are continuously  offered at  net asset  value without  the
imposition  of  a  sales  charge. However,  repurchases  and/or  redemptions 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
"Repurchases  and Redemptions--Contingent  Deferred Sales  Charge." In addition,
the Fund pays the Distributor a Rule  12b-1 distribution fee pursuant to a  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 31,  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.
 
TABLE OF CONTENTS
 
Prospectus Summary 2
Summary of Fund Expenses 4
Financial Highlights 5
The Fund and its Management 5
Investment Objective and Policies 6
Risk Considerations 8
Investment Restrictions 12
Purchase of Fund Shares 13
Shareholder Services 14
Repurchases and Redemptions 16
Dividends, Distributions and Taxes 18
Performance Information 18
Additional Information 19
 
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.
 
         TCW/DW LATIN AMERICAN
           GROWTH FUND
         Two World Trade Center
         New York, New York 10048
         (212) 392-2550 or
         (800) 526-3143
 
            Dean Witter Distributors Inc.
 
            Distributor
 
      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.
<PAGE>
PROSPECTUS SUMMARY
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                   <C>
THE                   The  Fund is organized as  a trust, commonly known  as a Massachusetts business trust,
FUND                  and is an open- end, non-diversified management investment company investing primarily
                      in equity securities of Latin American issuers.
- ---------------------------------------------------------------------------------------------------------
SHARES                Shares of beneficial interest with $0.01 par value (see page 19). The Fund may in  the
OFFERED               future  suspend the offering of its shares from time to time as may be consistent with
                      prudent portfolio management.
- ---------------------------------------------------------------------------------------------------------
OFFERING              At net asset  value without sales  charge (see  page 13). Shares  redeemed within  six
PRICE                 years  of  purchase are  subject  to a  contingent  deferred sales  charge  under most
                      circumstances (see page 16).
- ---------------------------------------------------------------------------------------------------------
MINIMUM               The minimum  initial investment  is $1,000  ($100  if the  account is  opened  through
PURCHASE              EasyInvest-SM-) and the minimum subsequent investment is $100 (see page 13).
- ---------------------------------------------------------------------------------------------------------
INVESTMENT            The investment objective of the Fund is long-term capital appreciation.
OBJECTIVE
- ---------------------------------------------------------------------------------------------------------
MANAGER               Dean  Witter Services Company Inc. (the  "Manager"), a wholly-owned subsidiary of Dean
                      Witter InterCapital Inc.  ("InterCapital"), is  the Fund's Manager.  The Manager  also
                      serves  as Manager to thirteen other TCW/DW  Funds. The Manager and InterCapital serve
                      in various investment management,  advisory, management and administrative  capacities
                      to  a  total  of  102  investment  companies  and  other  portfolios  with  assets  of
                      approximately $93 billion at February 28, 1997.
- ---------------------------------------------------------------------------------------------------------
ADVISER               TCW Funds  Management, Inc.  (the  "Adviser") is  the  Fund's investment  adviser.  In
                      addition  to the  Fund, the  Adviser serves  as investment  adviser to  thirteen other
                      TCW/DW Funds. As of  February 28, 1997,  the Adviser and its  affiliates had over  $50
                      billion  under management or committed to  management in various fiduciary or advisory
                      capacities, primarily from institutional investors.
- ---------------------------------------------------------------------------------------------------------
MANAGEMENT            The Manager receives a monthly  fee at the annual rate  of 0.75% of daily net  assets,
AND ADVISORY          scaled  down to 0.72% on assets over $500  million. The Adviser receives a monthly fee
FEES                  at an annual rate of 0.50% of daily  net assets, scaled down to 0.048% on assets  over
                      $500 million (see page 5).
- ---------------------------------------------------------------------------------------------------------
DIVIDENDS             Income dividends and capital gains, if any, will be distributed no less than 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 18).
- ---------------------------------------------------------------------------------------------------------
DISTRIBUTOR           Dean Witter Distributors  Inc. (the "Distributor")  is the distributor  of the  Fund's
                      shares.  The Distributor receives from  the Fund a distribution  fee accrued daily and
                      payable monthly at the rate of  1% per 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  the 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 13 and 16).
- ---------------------------------------------------------------------------------------------------------
REDEMPTION--          Shares  are  redeemable by  the  shareholder at  net asset  value.  An account  may be
CONTINGENT            redeemed involuntarily if the total value of the account is less than $100 or, if  the
DEFERRED              account  was opened  through EasyInvest,  if after  twelve months  the shareholder has
SALES CHARGE          invested less than  $1,000 in the  account. Although  no commission or  sales load  is
                      imposed  upon the purchase of shares, a  contingent deferred sales charge (scaled down
                      from 5% to 1%)  is imposed on any  redemption of shares if  after such redemption  the
                      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 page 16).
- ---------------------------------------------------------------------------------------------------------
</TABLE>
 
                                       2
<PAGE>
- --------------------------------------------------------------------------------
<TABLE>
<S>                   <C>
RISK                  The net asset value  of the Fund's  shares will fluctuate with  changes in the  market
CONSIDERATIONS        value  of the Fund's  portfolio securities. It  should be recognized  that the foreign
                      securities and markets in which the Fund invests pose different and greater risks than
                      those customarily associated with domestic securities and their markets, including (i)
                      the risks generally associated with international investments, such as fluctuations in
                      foreign currency  exchange  rates, (ii)  the  risks  of investing  in  countries  with
                      smaller,  less developed capital markets, such as limited liquidity, price volatility,
                      custodial settlement  issues and  restrictions on  foreign investment,  and (iii)  the
                      risks  associated with Latin  American economies, including  high levels of inflation,
                      large amounts of  debt and political  and social  uncertainties, such as  the risk  of
                      expropriation,  nationalization or confiscation of the Fund's assets or the imposition
                      of restrictions on  foreign investment  or the  repatriation of  capital invested.  In
                      addition,  Latin  American securities  markets  are subject  to  non-uniform corporate
                      disclosure standards  and governmental  regulation  which may  lead to  less  publicly
                      available  and less  reliable information  concerning Latin  American issuers  than is
                      generally the case for U.S.  issuers (see page 8). The  Fund may invest in  securities
                      issued  by foreign investment companies,  which may result in  additional costs to the
                      Fund. The Fund is a non-diversified investment company and, as such, is not subject to
                      the diversification requirements of the Investment Company Act of 1940. As a result, a
                      relatively high percentage of the Fund's assets may be invested in a limited number of
                      issuers. However, the Fund  intends to continue to  qualify as a regulated  investment
                      company  under  the  federal  income  tax  laws  and,  as  such,  is  subject  to  the
                      diversification requirements of the Internal Revenue Code (see page 11). The Fund  may
                      invest  in lower rated or  unrated sovereign debt of  Latin American countries or debt
                      securities of Latin American issuers, which involves  a high degree of risk (see  page
                      8).  The Fund  also may engage  in options  and futures transactions  and may purchase
                      securities on a when-issued, delayed delivery or "when, as and if issued" basis, which
                      may involve certain additional risks (see pages 11-12).
</TABLE>
 
- --------------------------------------------------------------------------------
  THE ABOVE IS QUALIFIED IN ITS ENTIRETY BY THE DETAILED INFORMATION APPEARING
                                   ELSEWHERE
       IN THIS PROSPECTUS AND IN THE STATEMENT OF ADDITIONAL INFORMATION.
 
                                       3
<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 January 31, 1997.
 
<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%
</TABLE>
 
 A contingent deferred sales charge is imposed at the following declining rates:
 
<TABLE>
<CAPTION>
YEAR SINCE PURCHASE PAYMENT MADE                    PERCENTAGE
- --------------------------------------------------  -----------
<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 Fees...................................        None
Exchange Fee......................................        None
 
ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF
 AVERAGE NET ASSETS)
Management and Advisory Fees......................       1.25%
12b-1 Fees*.......................................       1.00%
Other Expenses....................................       0.53%
Total Fund Operating Expenses.....................       2.78%
<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>
                                                                                      10
EXAMPLE                                             1 YEAR    3 YEARS    5 YEARS     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:.........................................    $78       $116       $167      $311
You would pay the  following expenses on the  same
  investment, assuming no redemption..............    $28       $ 86       $147      $311
</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  "Repurchases  and
Redemptions" in this Prospectus.
 
    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.
 
                                       4
<PAGE>
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
 
The  following ratios  and per  share data  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,  notes thereto,  and the  unqualified report  of
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
                                                                                                DECEMBER 30, 1992*
                                                      FOR THE YEAR ENDED JANUARY 31,                  THROUGH
                                                 1997        1996        1995        1994        JANUARY 31, 1993
                                               ---------   ---------   ---------   ---------   ---------------------
<S>                                            <C>         <C>         <C>         <C>         <C>
PER SHARE OPERATING PERFORMANCE:
  Net asset value, beginning of period.......  $    9.48   $    9.35   $   16.05   $    9.56           $  10.00
                                               ---------   ---------   ---------   ---------            -------
    Net investment loss......................      (0.04)      (0.06)      (0.17)      (0.04)             (0.01)
    Net realized and unrealized gain
     (loss)..................................       2.03        0.19       (6.21)       6.68              (0.43)
                                               ---------   ---------   ---------   ---------            -------
  Total from investment operations...........       1.99        0.13       (6.38)       6.64              (0.44)
  Less distributions from net realized
   gain......................................     --          --           (0.32)      (0.15)         --
                                               ---------   ---------   ---------   ---------            -------
  Net asset value, end of period.............     $11.47       $9.48       $9.35      $16.05              $9.56
                                               ---------   ---------   ---------   ---------            -------
                                               ---------   ---------   ---------   ---------            -------
TOTAL INVESTMENT RETURN+.....................      20.99%       1.39%     (40.12)%     69.49%             (4.30)%(1)
RATIOS TO AVERAGE NET ASSETS:
  Expenses...................................       2.78%       2.98%       2.87%       2.89%              3.08%(2)
  Net investment loss........................      (0.29)%     (0.61)%     (1.46)%     (0.90)%            (1.08)%(2)
SUPPLEMENTAL DATA:
  Net assets, end of period, in thousands....  $ 270,843   $ 261,066   $ 294,774   $ 325,956           $ 69,611
  Portfolio turnover rate....................         29%         64%        145%        111%                 1%(1)
  Average commission rate paid...............  $  0.0002      --          --          --              --
<FN>
- -------------
 *   COMMENCEMENT OF OPERATIONS.
 +   DOES NOT REFLECT THE DEDUCTION OF SALES CHARGE. CALCULATED BASED ON THE NET
     ASSET VALUE AS OF LAST BUSINESS DAY OF THE PERIOD.
(1)  NOT ANNUALIZED.
(2)  ANNUALIZED.
</TABLE>
 
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
TCW/DW Latin American Growth Fund  (the "Fund") is an open-end,  non-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 February 25, 1992.
 
    Dean Witter  Services Company  Inc. (the  "Manager"), whose  address is  Two
World Trade Center, New York, New York 10048, is the Fund's Manager. The Manager
is  a wholly-owned subsidiary of Dean Witter InterCapital Inc. ("InterCapital").
InterCapital 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.
 
    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 Manager acts as manager to thirteen other TCW/ DW Funds. The Manager and
InterCapital  serve in  various investment management,  advisory, management and
administrative capacities  to a  total of  102 investment  companies, thirty  of
which  are  listed on  the  New York  Stock  Exchange, with  combined  assets of
approximately $89.8 billion as of  February 28, 1997. InterCapital also  manages
and  advises  portfolios of  pension plans,  other institutions  and individuals
which aggregated approximately $3.2 billion at such date.
 
    The Fund has retained the Manager to manage its business affairs,  supervise
its  overall day-to-day operations (other  than providing investment advice) and
provide all administrative services.
 
    TCW Funds  Management, Inc.  (the  "Adviser"), whose  address is  865  South
Figueroa  Street,  Suite  1800, Los  Angeles,  California 90017,  is  the Fund's
investment adviser. The
 
                                       5
<PAGE>
Adviser was organized  in 1987 as  a wholly-owned subsidiary  of The TCW  Group,
Inc.  ("TCW"), whose subsidiaries,  including Trust Company of  the West and TCW
Asset Management Company, provide a variety of trust, investment management  and
investment  advisory services. Robert  A. Day, who  is Chairman of  the Board of
Directors of TCW, may be deemed to be a control person of the Adviser by  virtue
of  the aggregate ownership  by Mr. Day and  his family of more  than 25% of the
outstanding voting stock  of TCW. The  Adviser serves as  investment adviser  to
thirteen  other TCW/DW Funds in  addition to the Fund.  As of February 28, 1997,
the Adviser and its affiliated companies  had over $50 billion under  management
or committed to management, primarily from institutional investors.
 
    The Fund has retained the Adviser to invest the Fund's assets.
 
    The  Fund's Trustees review the various services provided by the Manager and
the Adviser 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 Manager, the Fund pays the Manager
monthly compensation calculated daily  by applying the annual  rate of 0.75%  to
the  Fund's net assets up  to $500 million, scaled down  to 0.72% on assets over
$500 million. As  compensation for  its investment advisory  services, the  Fund
pays  the Adviser  monthly compensation calculated  daily by  applying an annual
rate of 0.50% to the Fund's net assets up to $500 million, scaled down to  0.48%
on  assets over $500  million. For the  fiscal year ended  January 31, 1997, the
Fund accrued total  compensation to  the Manager  and the  Adviser amounting  to
0.75%  and 0.50%, respectively,  of the Fund's average  daily net assets. During
that period, the Fund's expenses amounted  to 2.78% of the Fund's average  daily
net assets.
 
INVESTMENT OBJECTIVE AND POLICIES
- --------------------------------------------------------------------------------
 
The  investment objective  of the Fund  is long-term  capital appreciation. This
objective is fundamental and  may not be  changed without shareholder  approval.
There is no assurance that the objective will be achieved.
 
    The   Fund  seeks  to  achieve  its  objective  by  investing  under  normal
circumstances at least  65% of its  total assets in  equity securities of  Latin
American  issuers (as described below). Securities will be selected on the basis
of their potential  for capital  appreciation based  on an  evaluation of  their
prospects for earnings growth; current dividend income will not be a factor. The
Fund may also invest up to 35% of its total assets under normal circumstances in
Latin  American  convertible  securities,  Latin  American  debt  securities (as
described below)  of governmental  and corporate  issuers, denominated  in  U.S.
dollars  or in local currencies, including debt obligations issued or guaranteed
by Latin American governmental entities.
 
    In  its  investment  strategy,  the  Adviser  primarily  adopts  a  top-down
approach,  beginning with  an evaluation  of the  country in  which the proposed
investment is to  be made,  including relevant external  developments and  their
implications.  Following the  country level  of review,  investments in specific
securities  will  be  made  after  completion  of  a  fundamental  analysis   of
securities,  industries and companies by the Adviser, including consideration of
liquidity, market  capitalization,  a  company's existing  and  expected  future
financial  position, relative  competitive position  in the  domestic and export
markets,  technology,  recent  developments  and  profitability,  together  with
overall  growth  prospects. Other  considerations include  management expertise,
government regulation and costs of labor and raw materials.
 
    For purposes of this Prospectus, equity securities of Latin American issuers
are defined  as follows:  (a)  equity securities  of  companies organized  in  a
country in Latin America or for which the principal trading market (the exchange
or  over-the-counter market in  which the largest  portion of the  shares of the
company's securities  is  traded)  is  located  in  Latin  America,  (b)  equity
securities  of companies that derive at least  50% of their revenues from either
goods produced or  services performed in  Latin America or  sales made in  Latin
America,  and (c) equity securities  in the form of  depositary shares listed on
securities exchanges or traded in other regulated markets in the United  States.
In  addition,  the  Fund may  invest  up to  35%  of  its total  assets  in debt
securities of Latin American issuers, which  consist of: (a) debt securities  of
companies  organized in a  country in Latin  America or for  which the principal
trading market  is located  in  Latin America,  (b)  debt securities  issued  or
guaranteed  by the  government of  a country in  Latin America,  its agencies or
instrumentalities, or the central bank  of such country ("Sovereign Debt"),  (c)
debt  securities denominated in a Latin American currency issued by companies to
finance operations in Latin  America and (d) debt  securities of companies  that
derive  at least 50%  of their revenues  from either goods  produced or services
performed in Latin America or sales made in Latin America. The Fund may consider
investment companies to  be located in  the country or  countries in which  they
primarily make their portfolio investments.
 
    The  Fund  defines  Latin America  to  consist of  the  following countries:
Argentina, the  Bahamas, Barbados,  Belize,  Bolivia, Brazil,  Chile,  Colombia,
Costa  Rica, Dominican Republic, Ecuador, El Salvador, French Guinea, Guatemala,
Guyana, Haiti, Honduras, Jamaica,  Mexico, the Netherlands Antilles,  Nicaragua,
Panama, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay and Venezuela.
 
    The  Fund's assets will be allocated among the countries in Latin America in
accordance with the Adviser's judgment
 
                                       6
<PAGE>
as to where the best investment opportunities exist. Currently, except when  the
Fund  has adopted a defensive position, it will invest its assets among at least
three Latin American countries at all times.
 
    The Fund  intends its  portfolio  of Latin  American securities  to  consist
primarily  of equity securities.  Latin American equity  securities in which the
Fund invests  consist  predominantly of  common  stock and  preferred  stock  of
established  companies listed on  a recognized securities  exchange or traded in
other regulated markets, although the Fund  may also invest to a limited  extent
in  convertible securities, warrants  and stock rights. For  a discussion of the
risks of such securities, see "Risk Considerations" below.
 
    The Fund may invest in securities of  Latin American issuers in the form  of
American  Depository  Receipts ("ADRs")  or  other similar  securities,  such as
American Depository  Shares  and  Global  Depository  Shares,  convertible  into
securities   of  foreign  issuers.  These  securities  may  not  necessarily  be
denominated in  the same  currency as  the  securities into  which they  may  be
converted.  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 United States securities markets. As a
result of  the  absence of  established  securities markets  and  publicly-owned
corporations  in certain  Latin American countries,  as well  as restrictions on
direct investment by foreign entities,  the Fund may be  able to invest in  such
countries  solely or primarily through ADRs or similar securities and government
approved investment vehicles.  For example,  due to  Chile's current  investment
restrictions  (in  most  cases  capital invested  directly  in  Chile  cannot be
repatriated for at least  one year), the Fund's  investments in Chile  primarily
will  be through investment in ADRs and established Chilean investment companies
not subject to repatriation restrictions.
 
    The governments of some Latin  American countries, to varying degrees,  have
been   engaged  in  programs  of  selling  part   or  all  of  their  stakes  in
government-owned or  government-controlled enterprises  ("privatizations").  The
Adviser  believes  that  privatizations may  offer  investors  opportunities for
significant  capital   appreciation  and   invests  assets   of  the   Fund   in
privatizations   in  appropriate   circumstances.  In   certain  Latin  American
countries, the ability of foreign persons,  such as the Fund, to participate  in
privatizations  may be limited by local law, or  the terms on which the Fund may
be permitted  to participate  may  be less  advantageous  than those  for  local
investors.  There can be no assurance  that privatization programs will continue
or be successful.
 
    INVESTMENTS IN DEBT AND CONVERTIBLE SECURITIES.   As stated above, the  Fund
may  invest  up  to  35%  of its  total  assets  in  Latin  American convertible
securities  and  debt   securities  of  governmental   and  corporate   issuers,
denominated  in  U.S. dollars  or local  currencies. The  Fund may  seek capital
appreciation through investment in  debt securities, such  as may occur  through
favorable  changes in relative foreign exchange rates, in relative interest rate
levels or  in creditworthiness  of issuers.  The Fund  may also  invest in  debt
securities  on  a  limited  basis  in  order  to  participate  in debt-to-equity
conversion programs sponsored by certain  Latin American countries, or in  order
to participate in corporate reorganizations. Latin American debt securities that
the  Fund may  acquire include  bonds, notes and  debentures of  any maturity of
Latin  American  governments,   obligations  of   such  governments'   agencies,
instrumentalities  and central banks  and of banks and  other companies of Latin
American countries, determined by the Adviser to be suitable investments for the
Fund. In addition to the specific risks regarding Latin American securities  and
lower  rated  debt securities  described  below, in  general  the value  of debt
securities tends  to increase  during periods  of declining  interest rates  and
decrease during periods of rising interest rates.
 
    A  convertible security is a bond, debenture, note, preferred stock or other
security that may  be converted  into or exchanged  for a  prescribed amount  of
common  stock of the  same or a  different issuer within  a particular period of
time at a  specified price  or formula.  Convertible securities  rank senior  to
common  stocks in a corporation's capital  structure and, therefore, entail less
risk than the corporation's common stock. The value of a convertible security is
a function  of its  "investment  value" (its  value  as if  it  did not  have  a
conversion  privilege), and its  "conversion value" (the  security's worth if it
were to be exchanged for the  underlying security, at market value, pursuant  to
its conversion privilege).
 
    There is no limitation other than the overall 35% limitation described above
on  the  percentage  of  the  Fund's  total  assets  which  may  be  invested in
convertible securities and  debt securities  below investment  grade. Most  debt
securities  in which the  Fund invests are  not rated; when  rated, such ratings
will generally be below investment grade. Securities below investment grade  are
the  equivalent of high yield, high risk  bonds, commonly known as "junk bonds."
Investment grade is  generally considered  to be  debt securities  rated BBB  or
higher  by Standard  & Poor's  Corporation ("S&P") or  Baa or  higher by Moody's
Investors Service, Inc. ("Moody's"). However, the  Fund will not invest in  debt
securities  that  are  in  default  in  payment  of  principal  or  interest.  A
description of fixed-income securities ratings  is contained in the Appendix  to
the  Statement  of Additional  Information.  For a  discussion  of the  risks of
convertible and lower rated debt securities, see "Risk Considerations" below.
 
    Certain Latin American countries are among the largest debtors to commercial
banks and foreign governments. Trading in Sovereign Debt involves a high  degree
of  risk, since the governmental entity that controls the repayment of Sovereign
Debt may not be willing or able  to repay the principal and/or interest of  such
debt  obligations  when it  becomes due,  due  to factors  such as  debt service
burden, political constraints, cash flow  situation and other national  economic
factors.  As a result, Latin American governments may default on their Sovereign
Debt, which may require  holders of such Sovereign  Debt to participate in  debt
rescheduling or
addi-
 
                                       7
<PAGE>
tional  lending to defaulting governments. There  is no bankruptcy proceeding by
which defaulted Sovereign Debt may be collected in whole or in part.
 
    The Fund may  invest in a  particular type of  Latin American debt  security
known as "Brady Bonds", which were issued under the "Brady Plan" in exchange for
loans  and  cash in  connection with  restructurings  in various  Latin American
external debt markets  in 1990. Brady  Bonds are issued  in various  currencies,
primarily  the  U.S. dollar,  and are  actively  traded in  the over-the-counter
secondary market for Latin American debt. In the case of U.S. dollar denominated
collateralized Brady Bonds, the bonds are collateralized in full as to principal
by U.S. Treasury zero coupon bonds of  the same maturity. In addition, at  least
one  year  of rolling  interest  payments are  collateralized  by cash  or other
investments.
 
    The Adviser  attempts  to minimize  the  speculative risks  associated  with
investments  in lower rated securities through credit analysis, and by carefully
monitoring current trends  in interest rates,  political developments and  other
factors. Nonetheless, investors should carefully review the investment objective
and  policies of the  Fund and consider  their ability to  assume the investment
risks involved before making an investment.
 
    INVESTMENT IN OTHER INVESTMENT VEHICLES.   Under the Investment Company  Act
of  1940,  as amended  (the "Investment  Company Act"),  the Fund  generally may
invest up  to 10%  of its  total  assets in  the aggregate  in shares  of  other
investment  companies and  up to 5%  of its  total assets in  any one investment
company, as long  as that  investment does  not represent  more than  3% of  the
voting  stock of  the acquired  investment company at  the time  such shares are
purchased. As stated above, investment in other investment companies or vehicles
may be the sole  or most practical  means by which the  Fund can participate  in
certain  Latin  American securities  markets.  Such investment  may  involve the
payment of  substantial premiums  above  the value  of such  issuers'  portfolio
securities,  and  is  subject  to the  limitations  described  above  and market
availability. There can be no assurance that vehicles or funds for investing  in
certain  Latin American countries will be available for investment. In addition,
special tax considerations may apply. The Fund does not intend to invest in such
vehicles or funds unless, in the judgment of the Adviser, the potential benefits
of such  investment justify  the  payment of  any  applicable premium  or  sales
charge.  As a  shareholder in  an investment  company, the  Fund would  bear its
ratable share of that investment company's expenses, including its advisory  and
administration  fees. At the  same time the  Fund would continue  to pay its own
management and advisory fees and other expenses,  as a result of which the  Fund
and  its shareholders in  effect will be absorbing  duplicate levels of advisory
fees with respect to investments in such other investment companies.
 
RISK CONSIDERATIONS
 
The net asset  value of the  Fund's shares  will fluctuate with  changes in  the
market  value of the Fund's securities. The market value of the Fund's portfolio
securities will increase or  decrease due to a  variety of economic, market  and
political factors which cannot be predicted.
 
    FOREIGN  SECURITIES.    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.  See  the
Statement of Additional Information for a discussion of additional risk factors.
 
    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.
 
    In  addition,  many  of  the currencies  of  Latin  American  countries have
experienced  steady  devaluations  relative  to  the  U.S.  dollar,  and   major
devaluations  have historically occurred in  certain countries. Any devaluations
in the currencies in which the  Fund's portfolio securities are denominated  may
have a detrimental impact on the Fund.
 
    Some Latin American countries also may have managed currencies which are not
free floating against the U.S. dollar. In addition, there is a risk that certain
Latin  American countries may  restrict the free  conversion of their currencies
into other currencies.  Further, certain  Latin American currencies  may not  be
internationally traded.
 
    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.  Political  and economic  developments  in Latin  America  may have
profound effects  upon  the value  of  the Fund's  portfolio.  In the  event  of
expropriation,  nationalization or other  complication, the Fund  could lose its
entire investment in  any one  country. In addition,  individual Latin  American
countries  may place restrictions on the ability of foreign entities such as the
Fund to invest in particular segments of the local economies.
 
    Latin American 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,  Latin American  companies are  not subject  to
uniform  accounting, auditing and financial reporting standards and requirements
comparable to those applicable to  U.S. companies. Also, certain Latin  American
countries may
 
                                       8
<PAGE>
impose  unusually  high  withholding taxes  on  dividends payable  to  the Fund,
thereby effectively reducing the Fund's investment income.
 
    The  securities  markets  of  Latin  American  countries  are  substantially
smaller, less developed, less liquid and more volatile than the major securities
markets in the United States. The limited size of many Latin American securities
markets  and limited trading volume in issuers  compared to volume of trading in
U.S. securities could cause prices to be erratic for reasons apart from  factors
that  affect the quality of the securities. For example, limited market size may
cause prices to  be unduly influenced  by traders who  control large  positions.
Adverse   publicity  and  investors'  perceptions,   whether  or  not  based  on
fundamental  analysis,  may  decrease  the  value  and  liquidity  of  portfolio
securities, especially in these markets.
 
    In  addition,  Latin  American exchanges  and  broker-dealers  are generally
subject to  less government  and  exchange scrutiny  and regulation  than  their
American  counterparts.  Brokerage  commissions,  dealer  concessions, custodial
expenses and other transaction  costs may be higher  in foreign markets than  in
the  U.S. Thus,  the Fund's  operating expenses are  expected to  be higher than
those of  investment companies  investing primarily  in domestic  or other  more
established  market  regions.  Also,  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. In addition, certain adverse
tax consequences  of  the  Fund's  investments  in  passive  foreign  investment
companies are discussed below under "Dividends, Distributions and Taxes."
 
    Certain Latin American countries are among the largest debtors to commercial
banks  and foreign governments.  At times certain  Latin American countries have
declared moratoria on the payment of principal and/or interest on external debt.
 
    Most Latin  American countries  have experienced  substantial, and  in  some
periods  extremely high, rates of inflation  for many years. Inflation and rapid
fluctuations in inflation rates have had and may continue to have very  negative
effects  on  the  economies and  securities  markets of  certain  Latin American
countries.
 
    The Fund  may  not invest  more  than 15%  of  its net  assets  in  illiquid
securities.  The Fund will treat any  Latin American securities that are subject
to restrictions  on  repatriation for  more  than seven  days,  as well  as  any
securities  issued in  connection with  Latin American  debt conversion programs
that are restricted as to remittance of invested capital or profits, as illiquid
securities for purposes of this limitation. The Fund will also treat  repurchase
agreements  with maturities in excess  of seven days as  being illiquid for this
purpose.
 
    DEBT SECURITIES.   Because of  the special  nature of  the Fund's  permitted
investments  in lower  rated convertible and  debt securities,  the Adviser must
take account of certain special considerations in assessing the risks associated
with such investments. The prices of  lower rated securities have been found  to
be  less sensitive  to changes  in prevailing  interest rates  than higher rated
investments, but are likely to be more sensitive to adverse economic changes  or
individual  corporate developments.  During an economic  downturn or substantial
period of  rising  interest  rates,  highly  leveraged  issuers  may  experience
financial  stress which  would adversely affect  their ability  to service their
principal and interest  payment obligations,  to meet  their projected  business
goals  or  to  obtain additional  financing.  If  the issuer  of  a fixed-income
security owned by the Fund defaults,  the Fund may incur additional expenses  to
seek  recovery. In addition,  periods of economic uncertainty  and change can be
expected to result in  an increased volatility of  market prices of lower  rated
securities  and a corresponding volatility in the  net asset value of a share of
the Fund.
 
    The risks of other investment techniques  which may be utilized by the  Fund
are  described under "Forward Foreign Currency Exchange Contracts," "Options and
Futures Transactions" and "Other Investment Policies" below.
 
FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS
 
To hedge against adverse price movements in the securities held in its portfolio
and the currencies in which they are  denominated (as well as in the  securities
it  might wish to purchase and their denominated currencies) the Fund may engage
in transactions in forward foreign currency contracts.
 
    A forward foreign currency  exchange contract ("forward contract")  involves
an  obligation to purchase or sell a currency at a future date, which may be any
fixed number of days from the date  of the contract agreed upon by the  parties,
at  a price set  at the time  of the contract.  The Fund may  enter into forward
contracts as a hedge against fluctuations in future foreign exchange rates.
 
    Currently, only a limited  market, if any,  exists for hedging  transactions
relating  to  currencies in  most  Latin American  markets  or to  securities of
issuers domiciled or principally engaged in business in Latin American  markets.
This  may limit the Fund's ability to effectively hedge its investments in Latin
American markets. Hedging against a decline in the value of a currency does  not
eliminate  fluctuations in the prices of  portfolio securities or prevent losses
if the  prices of  such securities  decline. Such  transactions also  limit  the
opportunity  for gain  if the  value of  the hedged  currencies should  rise. In
addition, it may not  be possible for  the Fund to  hedge against a  devaluation
that  is so generally anticipated that the Fund  is not able to contract to sell
the currency at a price above the devaluation level it anticipates.
 
                                       9
<PAGE>
    If the Fund enters  into forward contract transactions  and the currency  in
which  the Fund's portfolio securities (or anticipated portfolio securities) are
denominated rises in value with respect to the currency which is being purchased
(or sold), then the Fund  will have realized fewer gains  than had the Fund  not
entered  into  the  forward contracts.  Moreover,  the precise  matching  of the
forward contract  amounts and  the value  of the  securities involved  will  not
generally  be possible,  since the  future value  of such  securities in foreign
currencies will change  as a  consequence of market  movements in  the value  of
those  securities between the date the forward  contract is entered into and the
date it matures. The Fund is not  required to enter into such transactions  with
regard  to its foreign currency-denominated securities and will not do so unless
deemed appropriate by the Adviser.
 
OPTIONS AND FUTURES TRANSACTIONS
 
The Fund  may  purchase and  sell  (write) call  and  put options  on  portfolio
securities  which  are  denominated in  either  U.S. dollars  or  Latin American
currencies and on the U.S.  dollar and foreign currencies,  which are or may  in
the  future be listed  on several U.S.  and foreign securities  exchanges or are
written in  over-the-counter  transactions  ("OTC  options").  OTC  options  are
purchased from or sold (written) to dealers or financial institutions which have
entered into direct agreements with the Fund.
 
    The  Fund is permitted to write covered call options on portfolio securities
and the U.S. dollar  and Latin American currencies,  without limit, in order  to
hedge  against the decline in the value of  a security or currency in which such
security is denominated and  to close out long  call option positions. The  Fund
may  write covered put options, under which the Fund incurs an obligation to buy
the security (or currency) 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. The aggregate value of the obligation underlying the  puts
determined as of the date the options are sold will not exceed 50% of the Fund's
net assets.
 
    The  Fund  may purchase  listed  and OTC  call  and put  options  in amounts
equalling up to 5% of  its total assets. The Fund  may purchase call options  to
close out a covered call position or to protect against an increase in the price
of  a security it  anticipates purchasing or, in  the case of  call options on a
foreign currency,  to hedge  against  an adverse  exchange  rate change  of  the
currency  in  which  the  security  it  anticipates  purchasing  is  denominated
vis-a-vis the currency in which the exercise price is denominated. The Fund  may
purchase  put options  on securities  which it  holds in  its portfolio  only to
protect itself against a decline in the value of the security. The Fund may also
purchase put options to close out written  put positions in a manner similar  to
call  option closing  purchase transactions.  There are  no other  limits on the
Fund's ability to purchase call and put options.
 
    The Fund may purchase and sell futures contracts that are currently  traded,
or  may in  the future  be traded,  on U.S.  and foreign  commodity exchanges on
underlying portfolio  securities,  on  any  of  the  Latin  American  currencies
("currency"  futures),  on  U.S.  and  Latin  American  fixed-income  securities
("interest rate" futures) and on such  indexes of U.S. or Latin American  equity
or  fixed-income securities as  may exist or come  into being ("index" futures).
The Fund may purchase or sell interest rate futures contracts for the purpose of
hedging some or  all of the  value of its  portfolio securities (or  anticipated
portfolio securities) against changes in prevailing interest rates. The Fund may
purchase  or sell index futures contracts for the purpose of hedging some or all
of its portfolio (or anticipated portfolio) securities against changes in  their
prices  (or  the  currency in  which  they  are denominated.)  As  stated above,
currently only  a limited  market exists  for options  and futures  transactions
relating  to  Latin  America  currencies  or  issuers.  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  also  may purchase  and  write call  and  put options  on  futures
contracts  which are traded  on an exchange and  enter into closing transactions
with respect to such options to terminate an existing position.
 
    New futures  contracts, options  and other  financial products  and  various
combinations  thereof continue to be developed. The  Fund may invest in any such
futures, options or products as may be developed, to the extent consistent  with
its investment objective and applicable regulatory requirements.
 
    RISKS  OF OPTIONS  AND FUTURES  TRANSACTIONS.   The Fund  may close  out its
position as writer of an option, or as a buyer or seller of a futures  contract,
only  if a liquid  secondary market exists  for options or  futures contracts of
that series. There is no assurance  that such a market will exist,  particularly
in  the case of OTC options, as such options may generally only be closed out by
entering into a closing purchase  transaction with the purchasing dealer.  Also,
exchanges  may limit the amount by which the price of many futures contracts may
move on any day. If the price moves equal to the daily limit on successive days,
then it may  prove impossible to  liquidate a futures  position until the  daily
limit moves have ceased.
 
    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 of such  instruments.
One  such risk is that the Adviser could  be incorrect in its expectations as to
the direction or extent of various interest rate or price movements or the  time
span  within  which the  movements take  place.  For example,  if the  Fund sold
futures contracts for the sale of  securities in anticipation of an increase  in
interest  rates, and then interest rates  went down instead, causing bond prices
to rise, the Fund would lose money on the sale. Another risk which will arise in
employing futures contracts
 
                                       10
<PAGE>
to protect against  the price  volatility of  portfolio securities  is that  the
prices  of securities, currencies and indexes  subject to futures contracts (and
thereby the futures contract prices) may correlate imperfectly with the behavior
of the U.S.  dollar cash  prices of the  Fund's portfolio  securities and  their
denominated  currencies.  See  the  Statement of  Additional  Information  for a
further discussion of risks.
 
OTHER INVESTMENT POLICIES
 
While the Fund  will invest  primarily in  equity securities  of Latin  American
issuers,  under ordinary  circumstances it  may invest  up to  35% of  its total
assets in (i) debt securities of Latin American issuers, as described above, and
(ii) U.S. money market  instruments, which are short-term  (maturities of up  to
thirteen  months)  fixed-income securities  issued  by private  and governmental
institutions. Money  market  instruments  in  which  the  Fund  may  invest  are
securities issued or guaranteed by the U.S. Government or its agencies (Treasury
bills,  notes and bonds); obligations of banks subject to regulation by the U.S.
Government  and  having  total  assets   of  $1  billion  or  more;   Eurodollar
certificates  of  deposit; obligations  of savings  banks  and savings  and loan
associations  having  total  assets  of  $1  billion  or  more;  fully   insured
certificates  of  deposit; and  commercial paper  rated  within the  two highest
grades by  Moody's or  S&P or,  if  not rated,  issued by  a company  having  an
outstanding debt issue rated AAA by S&P or Aaa by Moody's.
 
    There  may be periods  during which, in  the opinion of  the Adviser, 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 total assets is invested in money market instruments or
cash.
 
    The Fund is  classified as  a non-diversified investment  company under  the
Investment Company Act, and as such is not limited by the Investment Company Act
in  the proportion  of its  assets that it  may invest  in the  obligations of a
single issuer. However,  the Fund  intends to conduct  its operations  so as  to
qualify  as a "regulated investment company"  under Subchapter M of the Internal
Revenue Code. See  "Dividends, Distributions  and Taxes." In  order to  qualify,
among  other requirements, the  Fund will limit  its investments so  that at the
close of each quarter of the taxable year,  (i) not more than 25% of the  market
value  of the Fund's total assets will be invested in the securities of a single
issuer, and (ii) with respect to 50% of the market value of its total assets not
more than 5% will be invested in the securities of a single issuer and the  Fund
will  not own  more than 10%  of the  outstanding voting securities  of a single
issuer. To the extent that a relatively high percentage of the Fund's assets may
be invested  in the  obligations of  a  limited number  of issuers,  the  Fund's
portfolio  securities may be more susceptible  to any single economic, political
or  regulatory  occurrence  than  the  portfolio  securities  of  a  diversified
investment  company.  The  limitations  described  in  this  paragraph  are  not
fundamental policies and may be revised to the extent applicable Federal  income
tax requirements are revised.
 
    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,  including the  risks  of  default  or
bankruptcy  of the  selling financial  institution, 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 and maintaining adequate collateralization.
 
    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 securities 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 its net asset value.
 
    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
 
                                       11
<PAGE>
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.
 
    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.
 
    Rule 144A  under the  Securities Act  permits the  Fund to  sell  restricted
securities  to qualified  institutional buyers without  limitation. The Adviser,
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 15% 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 such securities.
 
PORTFOLIO MANAGEMENT
 
The Fund's portfolio is actively managed by its Adviser with a view to achieving
the Fund's investment  objective. Michael  P. Reilly, Managing  Director of  the
Adviser,  is the primary  portfolio manager of  the Fund. Mr.  Reilly has been a
primary portfolio  manager of  the Fund  since December,  1994, and  has been  a
portfolio manager with affiliates of TCW since June, 1992, prior to which he was
Vice President of Security Pacific Bank.
 
    In  determining which  securities to  purchase for the  Fund or  hold in the
Fund's portfolio, the  Adviser 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 the Manager, and
others regarding  economic  developments  and  interest  rate  trends,  and  the
Adviser's own analysis of factors it deems relevant.
 
    Orders  for transactions in portfolio  securities and commodities are placed
for the Fund with a number of  brokers and dealers, including DWR. The Fund  may
incur  brokerage commissions on transactions conducted through DWR. Under normal
circumstances it is not  anticipated that the portfolio  trading will result  in
the Fund's portfolio turnover rate exceeding 150% in any one year. The Fund will
incur  brokerage costs commensurate with its  portfolio turnover rate and thus a
higher level  (over 100%)  of portfolio  transactions will  increase the  Fund's
overall  brokerage  expenses. See  "Dividends,  Distributions and  Taxes"  for a
discussion of the tax implications of the Fund's trading policy.
 
    Except  as  specifically  noted,  all  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. Under the Investment Company
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 Investment
Company Act.  For purposes  of  the following  limitations: (i)  all  percentage
limitations  apply immediately after a purchase  or initial investment, and (ii)
any subsequent  change  in  any  applicable  percentage  resulting  from  market
fluctuations  or  other  changes  in  total  or  net  assets  does  not  require
elimination of any security from the portfolio.
 
    The Fund may not:
 
        1.  Invest 25% or more of the value of its total assets in securities of
    issuers in any one industry. This restriction does not apply to  obligations
    issued  or  guaranteed  by the  United  States Government,  its  agencies or
    instrumentalities.
 
        2.  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  does  not  apply   to
    obligations
 
                                       12
<PAGE>
    issued  or  guaranteed  by the  United  States Government,  its  agencies or
    instrumentalities.
 
    In addition, as a non-fundamental policy, the Fund may not, as to 75% of its
total assets, purchase more than 10% of the voting securities of any issuer.
 
PURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------
 
The Fund offers its shares for sale to the public on a continuous basis.  Shares
of   the  Fund   are  distributed   by  Dean   Witter  Distributors   Inc.  (the
"Distributor"),  an  affiliate  of  the  Manager,  pursuant  to  a  Distribution
Agreement  between the  Fund and  the Distributor and  offered by  DWR and other
dealers (which may include TCW Brokerage Services, an affiliate of the  Adviser)
which  have  entered  into  selected  dealer  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  and subsequent purchases of $100 or
more may be made  by sending a  check, payable to  TCW/DW Latin American  Growth
Fund,  directly to Dean Witter Trust Company  (the "Transfer Agent") at P.O. Box
1040, Jersey City, NJ 07303, by contacting an account executive of DWR or  other
Selected Broker-Dealer. 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. 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.
 
    The  offering price will  be the net  asset value per  share next determined
following receipt of an order (see "Determination of Net Asset Value"). 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 "Repurchases and
Redemptions"). Sales personnel of a  Selected Broker-Dealer are compensated  for
selling  shares of the Fund at the time  of their sale by the Distributor or any
of its affiliates  and/or the  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.
 
    The Fund in the future may suspend  the offering of its shares from time  to
time   as  may  be  consistent  with  prudent  portfolio  management.  Automatic
reinvestment of  dividends  and  distributions  will  not  be  affected  by  any
suspension by the Fund of offering its shares.
 
PLAN OF DISTRIBUTION
 
The  Fund has adopted  a Plan of  Distribution pursuant to  Rule 12b-1 under the
Investment Company Act (the "Plan"), 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
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 distribution expenses.
 
                                       13
<PAGE>
    For the fiscal year ended January 31, 1997, the Fund accrued payments  under
the  Plan amounting to $2,573,703, 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 expenses in distributing shares of the Fund 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 "Repurchases  and  Redemptions--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 $20,103,415 at  January
31, 1997, which was equal to 7.42% of the Fund's net assets on such date.
 
    Because  there  is no  requirement under  the Plan  that the  Distributor be
reimbursed for all  distribution 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 the  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,  subtracting  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 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 (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 available bid
price prior to  the time of  valuation. When market  quotations are not  readily
available,  including circumstances under which it  is determined by the Adviser
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  Fund's
Trustees.  For valuation  purposes, quotations of  foreign portfolio securities,
other assets and liabilities  and forward contracts  stated in foreign  currency
are translated into U.S. dollar equivalents at the prevailing market rates prior
to the close of the New York Stock Exchange. Dividends receivable are accrued as
of the ex-dividend date or as of the time that the relevant ex-dividend date and
amounts become known.
 
    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.
 
    Certain  of  the Fund's  portfolio securities  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  and 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 TCW/DW Fund),
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 "Repurchases and Redemptions").
 
    INVESTMENT OF DIVIDENDS OR 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 30  days after the payment
date. Shares  so acquired  are not  subject to  the imposition  of a  contingent
deferred sales charge
 
                                       14
<PAGE>
upon their redemption (see "Repurchases and Redemptions").
 
    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. EasyInvest is  available during any period  when the Fund is  offering
its  shares (see  "Purchase of Fund  Shares" and  "Repurchases and Redemptions--
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  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.  Any applicable
contingent deferred sales charge  will be imposed on  shares redeemed under  the
Withdrawal  Plan  (See "Repurchases  and Redemptions--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 for  information about any of the above
services.
 
    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 their 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 any other TCW/DW Fund sold with
a contingent deferred sales charge ("CDSC  Funds"), for shares of TCW/ DW  North
American Government Income Trust, TCW/DW Income and Growth Fund, TCW/DW Balanced
Fund  and for shares of five money market funds for which InterCapital serves as
investment manager:  Dean  Witter  Liquid  Asset Fund  Inc.,  Dean  Witter  U.S.
Government  Money Market  Trust, Dean Witter  Tax-Free Daily  Income Trust, Dean
Witter California Tax-Free Daily Income Trust and Dean Witter New York Municipal
Money  Market  Trust  (the  foregoing  eight  non-CDSC  funds  are   hereinafter
collectively  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.
 
    Shareholders  utilizing  the  Fund's  Exchange  Privilege  may  subsequently
re-exchange  such shares  back to the  Fund during  any period when  the Fund is
offering its shares.  However, no  exchange privilege is  available between  the
Fund and any other fund managed by the Manager or InterCapital, other than other
TCW/DW Funds and the five money market funds listed above.
 
    An  exchange to another CDSC Fund or to an 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 or  any  other CDSC  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 TCW/DW  Fund 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. 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
"Repurchases  and Redemptions--Contingent  Deferred Sales  Charge"). However, in
the case of shares 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 which are attributable to  those shares. (Exchange Fund 12b-1  distribution
fees are described in the prospectuses of those funds.)
 
    Purchases  and  exchanges should  be made  for  investment purposes  only. A
pattern of frequent exchanges  may be deemed  by the Manager  to be abusive  and
contrary  to the  best interests  of the Fund's  other shareholders  and, at the
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, each of the other TCW/DW
Funds and  each of  the money  market funds  may in  their discretion  limit  or
otherwise restrict the number of times this Exchange
Priv-
 
                                       15
<PAGE>
ilege 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. Also, the  Exchange
Privilege  may be terminated  or revised at any  time by the  Fund and/or any of
such TCW/DW Funds or money market 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 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.  The 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 will also
be recorded. If such procedures are not employed, the Fund may be liable for any
losses due to unauthorized or fraudulent transactions.
 
    Telephone exchange instructions will be accepted if received by the Transfer
Agent  between 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  in the past  with
other funds managed by the Manager.
 
    Shareholders  should  contact  their  DWR  or  other  Selected Broker-Dealer
account executive  or  the Transfer  Agent  for further  information  about  the
Exchange Privilege.
 
REPURCHASES AND REDEMPTIONS
- --------------------------------------------------------------------------------
 
    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-Dealer,
reduced by any applicable CDSC (see below).
 
    The CDSC, if any, will be the only fee imposed by the Fund, the Distributor,
DWR  or  other Selected  Broker-Dealer.  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 below under "Redemption."
 
    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
will be reduced by the amount of any applicable contingent deferred sales charge
(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
shareholder,  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
 
                                       16
<PAGE>
charge is called a "contingent deferred sales charge" ("CDSC"), which 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.  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, 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; and
 
    (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 Manager
or its  parent,  Dean  Witter InterCapital  Inc.,  as  self-directed  investment
alternatives  and for which Dean Witter Trust  Company or Dean Witter Trust FSB,
each of which is an  affiliate of the Manager, serves  as Trustee or the  401(k)
Support  Services Group of DWR serves  as recordkeeper ("Eligible 401(k) Plan"),
provided that either:   (a) the  plan continues  to be an  Eligible 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.
 
    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 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
repurchased  or  redeemed and  has not  previously exercised  this reinstatement
privilege  may,  within  thirty  days  after  the  date  of  the  repurchase  or
redemption,  reinstate any portion or all of  the proceeds of such repurchase or
redemption 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
repurchase or redemption.
 
    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 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 the shareholder 60  days
to  make an additional investment in an  amount which will increase the value of
the account  to  at  least  the  applicable  amount  before  the  redemption  is
processed. No CDSC will be imposed on any involuntary redemption.
 
                                       17
<PAGE>
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
    DIVIDENDS  AND  DISTRIBUTIONS.   The Fund  intends to  pay dividends  and to
distribute substantially  all  of  the  Fund's net  investment  income  and  net
short-term  and 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 net long-term capital gains in any year for reinvestment.
 
    The  Fund may, at times, make payments from sources other than income or net
capital gains. Payments from such sources  would, in effect, represent a  return
of  a  portion of  each shareholder's  investment.  All, or  a portion,  of such
payments  would  not  be   taxable  to  shareholders,   and  would  reduce   the
shareholder's cost basis in his or her shares.
 
    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 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 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 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 calendar year which are  paid
in  the  following year  prior  to February  1 will  be  deemed received  by the
shareholder in the prior year. Dividend payments will generally not be  eligible
for the federal dividends received deduction.
 
    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.
 
    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 at  either ordinary or  capital gain  rates.
Therefore,  an investor should consider the  tax implications of purchasing Fund
shares immediately prior to a dividend or distribution record date.
 
    The Fund may purchase the securities of certain foreign investment funds  or
trusts called passive foreign investment companies. Capital gains on the sale of
such  holdings will be deemed  to be ordinary income  regardless of how long the
Fund holds its investment. In  addition, the Fund may  be subject to income  tax
and  an interest charge on certain dividends and capital gains earned from these
investments, regardless of  whether such  income and gains  were distributed  to
shareholders.
 
    After  the  end  of  the  calendar  year,  shareholders  will  be  sent full
information on their dividends and capital gains distributions for tax purposes.
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.
 
    Dividends, interest and capital gains received by the Fund may give rise  to
withholding  and other taxes  imposed by foreign countries.  If it qualifies for
and has made  the appropriate election  with the Internal  Revenue Service,  the
Fund  will report  annually to  its shareholders  the amount  per share  of such
taxes, to enable  shareholders to  claim United  States foreign  tax credits  or
deductions  with respect to such taxes. In  the absence of such an election, the
Fund would  deduct foreign  tax in  computing the  amount of  its  distributable
income.
 
    The   foregoing  discussion  relates  solely   to  the  federal  income  tax
consequences of an investment in the Fund. Distributions may also be subject  to
state  and local taxes; therefore, each shareholder is advised to consult his or
her own tax adviser.
 
    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  "total return" in advertisements and
sales literature. The total return of  the Fund is based on historical  earnings
and  is not intended  to indicate future performance.  The "average annual total
return" of  the  Fund refers  to  a  figure reflecting  the  average  annualized
percentage increase (or decrease) in the value of
 
                                       18
<PAGE>
an  initial investment in the Fund of $1,000  over one year, 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  stated periods.  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, and 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. The  Fund  may  also advertise  the  growth of
hypothetical investments of $10,000, $50,000 and $100,000 in shares of the Fund.
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.).
 
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 and in
ordinary circumstances  the Fund  does not  intend to  hold such  meetings.  The
Trustees  may call  Special Meetings of  Shareholders for  action by shareholder
vote as may  be required by  the Investment  Company Act or  the Declaration  of
Trust. Under certain 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
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 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  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,  the possibility  of the  Fund
being  unable to  meet its  obligations is  remote and  thus, in  the opinion of
Massachusetts counsel to  the Fund, the  risk to Fund  shareholders of  personal
liability is remote.
 
    CODE  OF ETHICS.  The Adviser is subject to a Code of Ethics with respect to
investment transactions in which the  Adviser's officers, directors and  certain
other  persons  have a  beneficial  interest to  avoid  any actual  or potential
conflict or  abuse  of their  fiduciary  position. The  Code  of Ethics,  as  it
pertains  to  the TCW/DW  Funds,  contains several  restrictions  and procedures
designed to  eliminate conflicts  of interest  including: (a)  pre-clearance  of
personal  investment  transactions  to  ensure  that  personal  transactions  by
employees are not being conducted at the same time as the Adviser's clients; (b)
quarterly reporting  of  personal  securities transactions;  (c)  a  prohibition
against  personally acquiring securities in an initial public offering, entering
into uncovered  short sales  and  writing uncovered  options;  (d) a  seven  day
"black-out period" prior or subsequent to a TCW/DW Fund transaction during which
portfolio managers are prohibited from making certain transactions in securities
which  are being  purchased or sold  by a  TCW/DW Fund; (e)  a prohibition, with
respect to  certain investment  personnel, from  profiting in  the purchase  and
sale,  or sale and  purchase, of the  same (or equivalent)  securities within 60
calendar days; and  (f) a prohibition  against acquiring any  security which  is
subject to firm wide or, if applicable, a department restriction of the Adviser.
The  Code of Ethics provides that exemptive  relief may be given from certain of
its requirements, upon application. The  Adviser's Code of Ethics complies  with
regulatory  requirements and, insofar  as it relates  to persons associated with
registered investment  companies,  the 1994  Report  of the  Advisory  Group  on
Personal Investing of the Investment Company Institute.
 
    SHAREHOLDER  INQUIRIES.  All inquiries regarding the Fund should be directed
to the Fund at the telephone number or  address set forth on the front cover  of
 
this Prospectus.
 
                                       19
<PAGE>
 
TCW/DW LATIN AMERICAN GROWTH FUND
TWO WORLD TRADE CENTER
NEW YORK, NEW YORK 10048
 
TRUSTEES
John C. Argue
Richard M. DeMartini
Charles A. Fiumefreddo
John R. Haire
Dr. Manuel H. Johnson
Thomas E. Larkin, Jr.
Michael E. Nugent
John L. Schroeder
Marc I. Stern
 
OFFICERS
Charles A. Fiumefreddo
Chairman and Chief Executive Officer
Thomas E. Larkin, Jr.
President
Barry Fink
Vice President, Secretary and
General Counsel
Michael P. Reilly
Vice President
Thomas F. Caloia
Treasurer
 
CUSTODIAN
The Chase Manhattan Bank
One Chase Plaza
New York, New York 10005
 
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
 
MANAGER
Dean Witter Services Company Inc.
 
ADVISER
TCW Funds Management, Inc.


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