VANGUARD HORIZON FUND INC
N-1A EL/A, 1995-04-03
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<PAGE>   1
================================================================================
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
   
                                   FORM N-1A
                  REGISTRATION STATEMENT (NO. 033-56443) UNDER
                           THE SECURITIES ACT OF 1933
                         PRE-EFFECTIVE AMENDMENT NO. 7
                        POST-EFFECTIVE AMENDMENT NO. --
                                      AND
 
              REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
                                  ACT OF 1940
                                AMENDMENT NO. 7
                          VANGUARD HORIZON FUND, INC.
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)
    
 
                     P.O. BOX 2600, VALLEY FORGE, PA 19482
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)
 
                  REGISTRANT'S TELEPHONE NUMBER (610) 669-1000
 
                         RAYMOND J. KLAPINSKY, ESQUIRE
                                  P.O. BOX 876
                             VALLEY FORGE, PA 19482
 
                 APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
It is hereby requested that this registration statement be declared effective on
      May 15, 1995, or as soon thereafter as the Commission may determine.
 
     REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE
A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SECTION 8(A) MAY
DETERMINE.
 
================================================================================
<PAGE>   2
 
                          VANGUARD HORIZON FUND, INC.
 
                             CROSS REFERENCE SHEET
<TABLE>
<CAPTION>
FORM N-1A
ITEM NUMBER                                                    LOCATION IN PROSPECTUS
<S>           <C>                                              <C>
    Item 1.   Cover Page....................................   Cover Page
    Item 2.   Synopsis......................................   Highlights
    Item 3.   Condensed Financial Information...............   N/A
    Item 4.   General Description of Registrant.............   Investment Objectives; Investment
                                                               Limitations; Investment Policies;
                                                               General Information
    Item 5.   Management of the Fund........................   Directors and Officers; Management of
                                                               the Fund; The Vanguard Group
    Item 6.   Capital Stock and Other Securities............   Opening an Account and Purchasing
                                                               Shares; Selling Your Shares; The
                                                               Share Price of Each Portfolio;
                                                               Dividends, Capital Gains, and Taxes;
                                                               General Information
    Item 7.   Purchase of Securities Being Offered..........   Cover Page; Opening an Account and
                                                               Purchasing Shares
    Item 8.   Redemption or Repurchase......................   Selling Your Shares
    Item 9.   Pending Legal Proceedings.....................   Not Applicable
 
<CAPTION>
FORM N-1A                                                      LOCATION IN STATEMENT
ITEM NUMBER                                                    OF ADDITIONAL INFORMATION
<S>           <C>                                              <C>
   Item 10.   Cover Page....................................   Cover Page
   Item 11.   Table of Contents.............................   Cover Page
   Item 12.   General Information and History...............   Investment Objectives and Policies;
                                                               General Information
   Item 13.   Investment Objective and Policies.............   Investment Objectives and Policies;
                                                               Investment Limitations
   Item 14.   Management of the Fund........................   Management of the Fund
   Item 15.   Control Persons and Principal Holders of
              Securities....................................   Management of the Fund; General
                                                               Information
   Item 16.   Investment Advisory and Other Services........   Management of the Fund
   Item 17.   Brokerage Allocation..........................   Not Applicable
   Item 18.   Capital Stock and Other Securities............   General Information; Financial
                                                               Statement
   Item 19.   Purchase, Redemption and Pricing of Securities
              Being Offered.................................   Purchase of Shares; Redemption of
                                                               Shares
   Item 20.   Tax Status....................................   Appendix
   Item 21.   Underwriters..................................   Not Applicable
   Item 22.   Calculations of Yield Quotations of Money
              Market Fund...................................   Not Applicable
   Item 23.   Financial Statements..........................   Financial Statement
</TABLE>
<PAGE>   3
 
     A REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH
     THE SECURITIES AND EXCHANGE COMMISSION BUT HAS NOT YET BEEN EFFECTIVE.
     THESE SECURITIES MAY NOT BE SOLD NOR MAY OFFERS TO BUY BE ACCEPTED PRIOR TO
     THE TIME THE REGISTRATION STATEMENT BECOMES EFFECTIVE. THIS COMMUNICATION
     SHALL NOT CONSTITUTE AN OFFER TO SELL OR SOLICITATION OF AN OFFER TO BUY,
     NOR SHALL THERE BE ANY SALE OF THESE SECURITIES IN ANY STATE IN WHICH SUCH
     OFFER, SOLICITATION, OR SALE WOULD BE UNLAWFUL PRIOR TO REGISTRATION
     QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
 
   
                   PRELIMINARY PROSPECTUS DATED APRIL 3, 1995
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
[LOGO]                                            A Member of the Vanguard Group
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
PROSPECTUS -- --
- --------------------------------------------------------------------------------
 
NEW ACCOUNT INFORMATION: INVESTOR INFORMATION DEPARTMENT -- 1-800-662-7447
(SHIP)
- --------------------------------------------------------------------------------
 
SHAREHOLDER ACCOUNT SERVICES: CLIENT SERVICES DEPARTMENT -- 1-800-662-2739
(CREW)
- --------------------------------------------------------------------------------
 
INVESTMENT
OBJECTIVES AND
POLICIES              Vanguard Horizon Fund, Inc. (the "Fund") is an open-end
                      diversified investment company. The Fund offers four
                      distinct Portfolios each of which seeks to provide maximum
                      long-term total return. Each Portfolio will pursue this
                      objective using very different strategies and investment
                      policies; thus, each Portfolio will expose shareholders to
                      an array of different risks.
 
   
                      The AGGRESSIVE GROWTH PORTFOLIO invests in U.S. equity
                      securities, emphasizing medium- and small-capitalization
                      companies. The CAPITAL OPPORTUNITY PORTFOLIO primarily
                      invests in U.S. equity securities, emphasizing those
                      companies with rapid earnings growth prospects. The GLOBAL
                      ASSET ALLOCATION PORTFOLIO invests in a varying mix of
                      U.S. and foreign stocks, bonds, and cash reserves. The
                      GLOBAL EQUITY PORTFOLIO invests in equity securities of
                      U.S.- and foreign-based companies that exhibit good
                      prospects for growth.
    
                      There is no assurance that the Portfolios will achieve
                      their stated objectives. Shares of the Fund are neither
                      insured nor guaranteed by any agency of the U.S.
                      Government, including the FDIC.
- --------------------------------------------------------------------------------
 
OPENING AN
ACCOUNT               To open a regular (non-retirement) account, please 
                      complete and return the Account Registration Form. If 
                      you need assistance in completing the form, please call 
                      the Investor Information Department at 1-800-662-7447. 
                      To open an Individual Retirement Account (IRA), please 
                      use a Vanguard IRA Adoption Agreement. To obtain a copy 
                      of this agreement, call the Investor Information 
                      Department, Monday through Friday, from 8:00 a.m. to 
                      9:00 p.m. and Saturday, from 9:00 a.m. to 4:00 p.m. 
                      (Eastern time). The minimum initial investment is 
                      $3,000 ($500 for Individual Retirement Accounts and 
                      Uniform Gifts/Transfers to Minors Act accounts.) The 
                      Fund is offered on a no-load basis (i.e., there are 
                      no sales commissions or 12b-1 fees). However, the Fund 
                      incurs expenses for investment advisory, management, 
                      administrative and distribution services.
 
IMPORTANT NOTE:
1% REDEMPTION FEE
                      If shares of the Portfolios are redeemed or exchanged 
                      prior to being held for five years, they will be 
                      subject to a 1% redemption fee which is paid directly 
                      to the Portfolios. See "Fund Expenses."
 
- --------------------------------------------------------------------------------
 
ABOUT THIS
PROSPECTUS            This prospectus is designed to set forth concisely the 
                      information you should know about the Fund before you 
                      invest. It should be retained for future reference. A 
                      "Statement of Additional Information" containing 
                      additional information about the Fund has been filed 
                      with the U.S. Securities and Exchange Commission. 
                      This statement is dated May --, 1995 and has been 
                      incorporated by reference into this Prospectus. A copy 
                      may be obtained without charge by writing to the 
                      Fund or by calling the Investor Information Department.
- --------------------------------------------------------------------------------
 
TABLE OF CONTENTS
 
   
<TABLE>
<S>                                        <C>                                        <C>
                                  Page                                       Page                                       Page
Highlights .......................  2      Who Should Invest ...............  16      SHAREHOLDER GUIDE
Fund Expenses ....................  5       Supplemental Investment                   Opening an Account and
Yield and Total Return ...........  7      Policies ........................  17       Purchasing Shares ................ 29
        FUND INFORMATION                   Investment Limitations ..........  20      When Your Account Will Be
Portfolio Overviews: Investment            Management of The Fund ..........  20       Credited ......................... 32
Objectives, Risks & Policies               Investment Advisers .............  21      Selling Your Shares ............... 33
- - Aggressive Growth Portfolio ....  8      Dividends, Capital Gains                   Exchanging Your Shares ............ 35
- - Capital Opportunity                       and Taxes ......................  25      Important Information About
   Portfolio ..................... 10      The Share Price of Each                     Telephone Transactions ........... 36
- - Global Asset Allocation                   Portfolio ......................  27      Transferring
   Portfolio ..................... 12      General Information .............  27       Registration ..................... 36
- - Global Equity                                                                       Other Vanguard Services ........... 37
   Portfolio ..................... 15
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
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 COMMISSION PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
- --------------------------------------------------------------------------------
<PAGE>   4
 
   
                                   HIGHLIGHTS
    
 
   
OVERVIEW AND
OBJECTIVES            The Vanguard Horizon Fund is an open-end diversified
                      investment company designed for investors with long-range
                      investment goals. The Fund offers a choice of four
                      distinct actively-managed Portfolios, each seeking maximum
                      long-term total return. The Portfolios' advisers have been
                      granted substantial investment flexibility and each will
                      take a different investment approach to pursuing maximum
                      long-term total return. Investors in any of the Portfolios
                      can expect returns to be less predictable than returns
                      from Funds that parallel a particular index or follow a
                      strict set of investment guidelines. Therefore, an
                      investment in the Fund is appropriate only for those
                      investors who have the perspective, patience, and
                      financial resources necessary to assume above-average risk
                      and volatility in exchange for the potential of achieving
                      above-average returns.
    
 
                      The Fund may be appropriate for investors who already have
                      a well-balanced core portfolio -- one including stocks,
                      bonds, and money market instruments -- and want to add an
                      extra dimension of aggressive investing. Shares of the
                      Fund are offered on a no-load basis, although the Fund
                      incurs certain distribution expenses.
- --------------------------------------------------------------------------------
 
   
THE FOUR
PORTFOLIOS            The AGGRESSIVE GROWTH PORTFOLIO invests in U.S. equity
                      securities, emphasizing medium- and small-capitalization
                      companies.
    
 
                      The CAPITAL OPPORTUNITY PORTFOLIO primarily invests in
                      U.S. equity securities, emphasizing those companies with
                      rapid earnings growth prospects.
 
   
                      The GLOBAL ASSET ALLOCATION PORTFOLIO invests in a varying
                      mix of both U.S. and foreign stocks, bonds, and cash
                      reserves.
    
 
   
                      The GLOBAL EQUITY PORTFOLIO invests in equity securities
                      of U.S.- and foreign-based companies that exhibit good
                      prospects for growth.
    
- --------------------------------------------------------------------------------
 
                                        2
<PAGE>   5
 
   
INVESTMENT
POLICIES
                      While each of the Portfolios seek the same investment
                      objective -- maximum long-term total return -- each
                      Portfolio pursues the objective using different investment
                      policies. The grid below shows, at-a-glance, some of the
                      financial instruments, investment techniques and analytic
                      methods employed by each Portfolio in pursuit of maximum
                      long-term total return.
    
 
<TABLE>
                           <S>                                  <C>          <C>           <C>          <C>
                           ----------------------------------------------------------------------------------------
</TABLE>
 
   
<TABLE>
<CAPTION>
                                                                                              GLOBAL
                                                                 AGGRESSIVE     CAPITAL       ASSET       GLOBAL
                                                                   GROWTH     OPPORTUNITY   ALLOCATION    EQUITY
                                                                 PORTFOLIO     PORTFOLIO    PORTFOLIO    PORTFOLIO
                           ----------------------------------------------------------------------------------------
                           <S>                                  <C>          <C>           <C>          <C>
                            FINANCIAL INSTRUMENTS
                           ----------------------------------------------------------------------------------------
                              Invests in the U.S. stock market       -             -            -            -
                           ----------------------------------------------------------------------------------------
                              Emphasizes small company stocks        -             -
                           ----------------------------------------------------------------------------------------
                              Invests in foreign stock markets                     -            -            -
                           ----------------------------------------------------------------------------------------
                              Invests in foreign bond markets                                                -
                           ----------------------------------------------------------------------------------------
                              Invests in foreign cash reserves                                               -
                           ----------------------------------------------------------------------------------------
                              Invests in forward currency
                                contracts                                                       -            -
                           ----------------------------------------------------------------------------------------
                              Invests in index put options                         -
                           ----------------------------------------------------------------------------------------
                            INVESTMENT TECHNIQUES
                           ----------------------------------------------------------------------------------------
                              Holds a small number of stocks                       -
                           ----------------------------------------------------------------------------------------
                              Sells stocks short                                   -
                           ----------------------------------------------------------------------------------------
                            ANALYTIC METHODS
                           ----------------------------------------------------------------------------------------
                              Uses quantitative computer models      -                          -
                           ----------------------------------------------------------------------------------------
                              Uses fundamental analysis                            -                         -
                           ----------------------------------------------------------------------------------------
</TABLE>
    
 
   
- --------------------------------------------------------------------------------
    
 
RISK
CHARACTERISTICS       Each of the Portfolios will expose investors to
                      substantial risk in pursuit of maximum long-term total
                      return. The following table depicts the principal risks
                      inherent in the Portfolios of the Fund:
 
<TABLE>
<CAPTION>
                                 PORTFOLIO             SECURITIES       FOREIGN       MANAGER RISK
                                 ----------           MARKET RISK     MARKET RISK      ----------
                                                      ------------    ------------
                        <S>                           <C>             <C>             <C>
                        Aggressive Growth...........      High            Low             High
                        Capital Opportunity.........      High            Low             High
                        Global Asset Allocation.....      High            High            High
                        Global Equity...............      High            High            High
</TABLE>
 
                      SECURITIES MARKET RISK: Common stock prices have
                      historically fluctuated substantially over short-term
                      periods. Bond prices also fluctuate in response to
                      interest rate change with prices declining as interest
                      rates increase.
 
   
                      FOREIGN MARKET RISK: Investments in foreign securities may
                      have greater risks than similar U.S. investments. These
                      risks involve many facets of foreign investing, including:
                      less liquid and/or efficient markets, less regulation, and
                      uncertain political events. In addition, the value of
                      foreign investments is affected by fluctuations in foreign
                      currency values.
    
 
                                        3
<PAGE>   6
 
   
                      MANAGER RISK: The manager, or adviser, of each Portfolio
                      is responsible for implementation of the Portfolio's
                      investment policies. Manager risk encompasses the
                      potential for the Portfolio to fail to achieve its
                      objective due to activities of the investment adviser.
                      Portfolios whose advisers have the greatest flexibility
                      therefore have the most manager risk. Investors should be
                      aware that each adviser may fail to achieve the
                      Portfolio's objective and the investment results may fall
                      short of comparable benchmarks.                    PAGE --
    
- --------------------------------------------------------------------------------
 
   
SPECIAL
CONSIDERATIONS        (1) Each Portfolio of the Fund may invest a portion of its
                          assets in futures contracts, options, convertible
                          securities and swap agreements. Investors in the
                          GLOBAL ASSET ALLOCATION PORTFOLIO should be aware that
                          the Portfolio may invest up to 50% of its net assets
                          in futures contracts instead of directly holding
                          securities. The advisers will not use futures to
                          leverage the Portfolios' holdings, but only as a more
                          efficient means to implement their investment
                          decisions.                                     PAGE --
    
   
                      (2) Each Portfolio may invest in short-term fixed income
                          securities.                                    PAGE --
    
   
                      (3) Each Portfolio may lend its securities.        PAGE --
    
   
                      (4) Each Portfolio may borrow money.               PAGE --
    
   
                      (5) The CAPITAL OPPORTUNITY PORTFOLIO may utilize the
                          hedging and defensive techniques of selling stocks
                          short, purchasing index put options, and increasing
                          cash reserves. As a guideline, these three strategies
                          in combination will not exceed 25% of the Portfolio's
                          net assets.                                    PAGE --
    
- --------------------------------------------------------------------------------
 
   
THE VANGUARD
GROUP                 The Fund is a member of The Vanguard Group of Investment
                      Companies, a group of over 30 investment companies with
                      over 80 distinct investment portfolios and total assets in
                      excess of $130 billion. The Vanguard Group, Inc.
                      ("Vanguard"), a subsidiary jointly owned by The Vanguard
                      Funds, provides all corporate, management, administrative,
                      distribution and shareholder accounting services on an at-
                      cost basis to the Funds in the Group.              PAGE --
    
- --------------------------------------------------------------------------------
 
   
INVESTMENT
ADVISERS              The Portfolios of the Fund receive investment advisory
                      services as follows:
    
 
   
<TABLE>
<CAPTION>
                                    PORTFOLIO                                   ADVISER
                                    ---------                                   --------
                        <S>                                       <C>
                        Aggressive Growth Portfolio               Vanguard's Core Management Group
                        Capital Opportunity Portfolio             Husic Capital Management
                        Global Asset Allocation Portfolio         Strategic Investment Management
                        Global Equity Portfolio                   Baring Asset Management Limited
</TABLE>
    
 
   
                      The advisers discharge their responsibilities subject to
                      the control of the Officers and Directors of the
                      Fund.                                              PAGE --
    
- --------------------------------------------------------------------------------
 
   
DIVIDENDS, CAPITAL
GAINS AND TAXES       Income is expected to be modest in the CAPITAL OPPORTUNITY
                      and GLOBAL EQUITY PORTFOLIOS; however, it may be more
                      significant, from time to time, for the AGGRESSIVE GROWTH
                      and the GLOBAL ASSET ALLOCATION PORTFOLIOS.
    
 
                      The Fund will distribute any net investment income in the
                      form of dividends. The Capital Opportunity, Aggressive
                      Growth, and Global Equity Portfolios of the Fund will
                      distribute net dividends, if any, annually. The Global
                      Asset Allocation Portfolio
 
                                        4
<PAGE>   7
 
   
                      will distribute net dividends, if any, semi-annually. Net
                      capital gains distributions, if any, will be made
                      annually. A sale of shares of a Portfolio is a taxable
                      event and may result in a capital gain or loss. Dividend
                      distributions, capital gains distributions, and capital
                      gains or losses from redemptions and exchanges may be
                      subject to federal, state and local taxes.         PAGE --
    
- --------------------------------------------------------------------------------
 
   
PURCHASING
SHARES                You may purchase shares by mail, wire or exchange from
                      another Vanguard Fund. The minimum initial investment is
                      $3,000 ($500 for Individual Retirement Accounts and
                      Uniform Gifts/Transfers to Minors Act accounts); the
                      minimum for subsequent investments is $100. There are no
                      sales commissions or 12b-1 fees.                   PAGE --
    
- --------------------------------------------------------------------------------
 
   
SELLING SHARES        You may redeem shares of each Portfolio in writing or by
                      telephone. Shares of the
                      Portfolios that are redeemed or exchanged prior to being
                      held for five years will be subject to a 1% redemption fee
                      paid directly to the Portfolios. The price of each
                      Portfolio is expected to fluctuate, and may at redemption
                      be more or less than at the time of initial purchase,
                      resulting in a gain or loss.                       PAGE --
    
- --------------------------------------------------------------------------------
 
   
EXCHANGING
SHARES                You may exchange a Portfolio's shares for those of another
                      Portfolio of the Fund or other Vanguard Funds. An exchange
                      from one of the Portfolios is considered a redemption and
                      will be subject to a 1% redemption fee if the shares were
                      held for less than 5 years. The redemption fee is paid
                      directly to the Portfolios.                        PAGE --
    
- --------------------------------------------------------------------------------
 
   
SERVICES TO
SHAREHOLDERS          The Fund offers special services: Fund Express, for
                      electronic transfers between the Fund and your bank
                      account; Tele-Account, for 24-hour telephone access to
                      your Fund account balances and certain transactions;
                      Direct Deposit, for automatic deposit of payroll checks;
                      Average Cost Statement, for determination of the average
                      cost of shares redeemed for tax purposes; Dividend
                      Express, for automatic transfer of dividends and/or
                      capital gains to a bank account.                   PAGE --
    
- --------------------------------------------------------------------------------
 
   
FUND
EXPENSES              The following table illustrates ALL of the expenses and
                      fees you would incur as a shareholder of the Fund. The
                      expenses and fees set forth below are estimates for the
                      Portfolios' first full year of operations, since the Fund
                      had not commenced operations as of the date of this
                      prospectus.
    
 
   
<TABLE>
<CAPTION>
                                                                                              GLOBAL               
                                                               AGGRESSIVE      CAPITAL        ASSET        GLOBAL  
                                                                 GROWTH      OPPORTUNITY    ALLOCATION     EQUITY  
                           SHAREHOLDER TRANSACTION EXPENSES    PORTFOLIO      PORTFOLIO     PORTFOLIO     PORTFOLIO
                           ---------------------------------   ----------    -----------    ----------    ---------
                           <S>                                 <C>           <C>            <C>           <C>
                           Sales Load Imposed on
                             Purchases......................       None          None           None         None
                           Sales Load Imposed on Reinvested
                             Dividends......................       None          None           None         None
                           Redemption (and Exchange
                             Redemption) Fees*:
                             shares held less than 5
                               years........................          1%            1%             1%           1%
                             shares held 5 years or more....       None          None           None         None
                           Exchange Fees**..................       None          None           None         None
</TABLE>
    
 
   
                       * The fees withheld from redemption proceeds are paid to
                         the Portfolios.
    
 
   
                      ** Exchanges will be treated as redemptions for purposes
                         of imposing the redemption fees.
    
 
                                        5
<PAGE>   8
 
   
<TABLE>
<CAPTION>
                                   ANNUAL PORTFOLIO            AGGRESSIVE      CAPITAL        GLOBAL       GLOBAL
                               OPERATING EXPENSES (AS A          GROWTH      OPPORTUNITY      ASSET        EQUITY
                               PERCENTAGE OF NET ASSETS)       PORTFOLIO      PORTFOLIO     ALLOCATION    PORTFOLIO
                           ---------------------------------   ----------    -----------    PORTFOLIO     --------
                                                                                            ----------
                           <S>                                 <C>           <C>            <C>           <C>
                           Management & Administrative
                             Expenses.......................         --%           --%            --%          --%
                           Investment Advisory Fees.........         --            --%            --%          --
                           12b-1 Fees.......................       None          None           None         None
                           Other Expenses
                             Distribution Costs.............         --%           --%            --%          --%
                             Miscellaneous Expenses.........         --            --             --           --
                                                               --------                                   --------
                           Total Other Expenses.............         --            --             --           --
                               TOTAL OPERATING EXPENSES.....         --%           --%            --%          --%
                                                               --------      ---------      --------      --------
                                                               --------      ---------      --------      --------
</TABLE>
    
 
                      The purpose of this table is to assist you in
                      understanding the various costs and expenses that you
                      would bear directly or indirectly as an investor in the
                      Fund.
 
   
1% REDEMPTION FEE     The Portfolios of the Fund are intended for long-term
                      investors who can withstand substantial price fluctuation.
                      For this reason, the Portfolios will assess a 1%
                      redemption fee on shares that are redeemed, or redeemed by
                      exchange, before they have been held for five years. For
                      purposes of calculating the five-year holding period the
                      Portfolio will use the "first-in, first-out" (FIFO)
                      method. That is, the date of the redemption or exchange
                      will be compared to the earliest purchase date. If this
                      holding period is less than five years, the fee will be
                      assessed. The fee will be prorated if a portion of the
                      shares being redeemed or exchanged has been held for five
                      years or more. This fee will not apply to shares purchased
                      though dividend or capital gain reinvestment. In the event
                      of an early redemption due to a shareholder's death, all
                      redemption fees will be waived. A certified copy of the
                      death certificate must be provided to substantiate the
                      death.
    
 
                      The fee is paid directly to the Portfolios to offset the
                      cost of short-term trading and other transaction costs. As
                      such, the fee is considered a benefit to long-term
                      investors. It is not a contingent deferred sales charge.
 
                      The following example illustrates the expenses that you
                      would incur on a $1,000 investment over various periods,
                      assuming (1) a 5% annual rate of return and (2) redemption
                      at the end of each period. A 1% redemption fee is included
                      in the expenses because the time periods illustrated are
                      less than five years.
 
   
<TABLE>
<CAPTION>
                                                                              1 YEAR     3 YEARS
                                                                              ------     -------
                        <S>                                                   <C>        <C>
                        Aggressive Growth Portfolio.........................   $ --        $--
                        Capital Opportunity Portfolio.......................   $ --        $--
                        Global Asset Allocation Portfolio...................   $ --        $--
                        Global Equity Portfolio.............................   $ --        $--
</TABLE>
    
 
   
                      THIS EXAMPLE SHOULD NOT BE CONSIDERED A REPRESENTATION OF
                      PAST OR FUTURE EXPENSES OR PERFORMANCE. ACTUAL EXPENSES
                      MAY BE HIGHER OR LOWER THAN THOSE SHOWN.
    
- --------------------------------------------------------------------------------
 
                                        6
<PAGE>   9
 
   
YIELD AND
TOTAL RETURN          From time to time the Portfolios may advertise their yield
                      and total return. Both yield and total return figures are
                      based on historical earnings and are not intended to
                      indicate future performance. The "total return" of the
                      Portfolios refers to the average annual compounded rates
                      of return over one-, five-, and ten-year periods or for
                      the life of the Portfolios (as stated) that would equate
                      an initial amount invested at the beginning of a stated
                      period to the ending redeemable value of the investment,
                      assuming the reinvestment of all dividend and capital
                      gains distributions.
    
 
   
                      In accordance with industry guidelines set forth by the
                      U.S. Securities and Exchange Commission, the "30-day
                      yield" of a Portfolio is calculated by dividing net
                      investment income per share earned during the 30-day
                      period by the net asset value per share on the last day of
                      the period. Net investment income includes interest and
                      dividend income earned on the Portfolio's securities; it
                      is net of all expenses and all recurring and nonrecurring
                      charges that have been applied to all shareholder
                      accounts. The yield calculation assumes that net
                      investment income earned over 30 days is compounded
                      monthly for six months and then annualized. Methods used
                      to calculate advertised yields are standardized for all
                      stock and bond mutual funds. However, these methods differ
                      from the accounting methods used by the Portfolios to
                      maintain their books and records, and so the advertised
                      30-day yield may not fully reflect the income paid to your
                      own account.
    
 
   
                      Also, the Portfolios may compare their performance to that
                      of various stock market indices, including, but not
                      limited to, the Standard & Poor's Composite Stock Price
                      Index.
    
- --------------------------------------------------------------------------------
 
   
OVERVIEW OF
PORTFOLIOS            The Fund is an open-end diversified investment company
                      offering four distinct Portfolios. The Portfolios invest
                      in securities that are deemed by their advisers to have
                      attractive total return potential. The Aggressive Growth,
                      Capital Opportunity, and Global Equity Portfolios invest
                      primarily in common stocks while the Global Asset
                      Allocation Portfolio invests in common stocks, bonds, and
                      cash reserves. The Portfolios of the Fund are managed
                      without regard to tax ramifications.
    
 
                      Each Portfolio of the Fund is authorized to invest in
                      stock index futures, options, and swap agreements to a
                      limited extent. Each Portfolio is permitted to hold equity
                      securities other than common stock, such as debentures or
                      preferred stock that is convertible to common stock. See
                      "Supplemental Investment Polices" for a description of
                      these and other investment practices of the Fund.
 
   
                      The investment objectives and policies of the Fund are not
                      fundamental and so may be changed by the Board of
                      Directors without shareholder approval. However,
                      shareholders would be notified prior to a material change
                      in either.
    
 
   
                      Pages -- to -- of this prospectus contain a summary of
                      each Portfolio's investment objective, policies and risks.
    
- --------------------------------------------------------------------------------
 
                                        7
<PAGE>   10
 
   
INVESTMENT
OBJECTIVE             The Aggressive Growth Portfolio seeks to provide maximum
                      long-term total return and is therefore intended for
                      investors who have a long-term investment horizon. To that
                      end, the Portfolio will assume above-average risk in
                      seeking potentially above-average returns, although there
                      is no assurance that the Portfolio will achieve
                      above-average returns. Income provided by the Portfolio
                      may fluctuate significantly.
    
- --------------------------------------------------------------------------------
 
   
INVESTMENT
POLICIES
                      The Aggressive Growth Portfolio invests in U.S. equity
                      securities and emphasizes medium- and small-capitalization
                      companies. The Portfolio's exposure to foreign securities
                      is expected to be minimal. The Portfolio will generally be
                      diversified across a wide range of industries; however,
                      the investment adviser may either overweight or
                      underweight certain industries.
    
 
   
                      The Portfolio's adviser, Vanguard's Core Management Group,
                      utilizes a proprietary quantitative valuation methodology
                      to identify, from a large universe of companies, those
                      common stocks with the best total return potential. Stocks
                      are generally categorized based on two dimensions: (i)
                      market capitalization (i.e., small, medium and large) and
                      (ii) growth versus value. The portion of the Portfolio's
                      assets invested in any one these categories will vary over
                      time depending upon Core Management's expectation for each
                      segment's total return potential. The Portfolio, however,
                      is more likely to be invested in small- and
                      medium-capitalization stocks than large-capitalization
                      stocks. Among the characteristics used in stock selection
                      are (i) market liquidity; (ii) valuation measures; and
                      (iii) financial strength relative to other stocks.
    
 
                      The Portfolio is expected to remain fully invested in
                      equity securities. However, the proportion of cash
                      reserves held by the Portfolio may increase if the adviser
                      feels a conservative investment approach is warranted.
- --------------------------------------------------------------------------------
 
   
INVESTMENT
RISKS
SECURITIES MARKET
RISK
                      The Portfolio exposes investors to the market risks
                      associated with U.S. equity investments. The Standard &
                      Poor's 500 Composite Stock Price Index ("S&P 500 Index"),
                      which can be used as a proxy for the U.S. stock market,
                      has provided annual total returns (capital appreciation
                      plus dividend income) averaging +12.2% for the period from
                      1926 to 1994. While this average return can be used as a
                      guide for setting reasonable expectations for future stock
                      market returns, it may not be useful for forecasting
                      future returns in any particular period, as stock market
                      returns are quite volatile from year to year. The return
                      in individual years has varied from a low of -43.3% to a
                      high of +53.9%, reflecting the short-term volatility of
                      stock prices.
    
 
   
                      Furthermore, the Portfolio emphasizes medium- and
                      small-capitalization stocks which have historically been
                      more volatile in price than the S&P 500 Index. Among the
                      likely reasons for the greater price volatility of small
                      company stocks are less than certain growth prospects of
                      smaller firms, a lower degree of liquidity in the markets
                      for such stocks, and the small to negligible dividends
                      generally paid by small companies. Besides exhibiting
                      greater volatility, small- and mid-capitalization stocks
                      have at times fluctuated independently of the broad stock
                      market. Investors should therefore expect small- and
                      mid-capitalization stocks (and hence the Aggressive Growth
                      Portfolio) may be more volatile than the S&P 500 Index.
    
 
                                        8
<PAGE>   11
 
   
MANAGER RISK          The Portfolio exposes investors to substantial manager
                      risk which encompasses the potential for the Portfolio to
                      fail to achieve its objective due to activities of the
                      investment adviser. Vanguard's Core Management Group, the
                      Portfolio's investment adviser, selects stocks based
                      primarily on quantitative models. There is no assurance
                      that the quantitative methodology applied by the adviser
                      will enable the Portfolio to meet its stated objective.
    

- --------------------------------------------------------------------------------
 
                                        9
<PAGE>   12
 
   
INVESTMENT
OBJECTIVE             The Capital Opportunity Portfolio seeks to provide maximum
                      long-term total return and is therefore intended for
                      investors who have a long-term investment horizon. To that
                      end, the Portfolio will assume above-average risk in
                      seeking potentially above-average returns, although there
                      is no assurance that the Portfolio will achieve
                      above-average returns. Income generated by the Portfolio
                      is expected to be minimal.
    
- --------------------------------------------------------------------------------
 
   
INVESTMENT
POLICIES
                      The Capital Opportunity Portfolio invests primarily in
                      medium- and small-capitalization U.S. equity securities
                      emphasizing companies with rapid earnings growth
                      prospects. The Portfolio may hold up to 15% of its assets
                      in foreign securities. The Portfolio is expected to be
                      concentrated in as few as 25 to 50 stocks.
    
 
   
                      The Portfolio's adviser, Husic Capital Management, applies
                      a "classic" fundamental investment strategy using security
                      analysis to identify the stocks deemed most attractive.
                      When selecting stocks, the investment adviser will: (i)
                      focus on early recognition of change that leads to high
                      expected earnings growth; (ii) concentrate in those
                      sectors and industries deemed to offer the possibility of
                      high returns; and (iii) maintain a flexible attitude
                      towards identifying growth opportunities. The adviser will
                      emphasize emerging and established growth companies, but
                      will also select cyclical and non-traditional growth
                      companies when appropriate.
    
 
                      In an attempt to reduce downside risk, Husic Management
                      Company may utilize the following hedging and defensive
                      techniques:
 
   
                      - sell short stocks considered to have fundamental
                        problems; limited to 10% of the Portfolio's net assets.
    
   
                      - purchase index put options; limited to 10% of the
                        Portfolio's net assets.
    
   
                      - increase cash reserves up to 15% of the Portfolio's net
                        assets.
    
 
                      As a guideline, these three strategies in combination will
                      not exceed 25% of the Portfolio's net assets.
 
                      With respect to 85% of its assets, the Portfolio is
                      expected to remain fully invested in equity securities.
                      However, the proportion of cash reserves held by the
                      Portfolio may increase if the adviser feels a conservative
                      investment approach is warranted.
- --------------------------------------------------------------------------------
 
   
INVESTMENT
RISKS
SECURITIES MARKET
RISKS
                      The Portfolio exposes investors to the market risks
                      associated with U.S. equity investments. The Standard &
                      Poor's 500 Composite Stock Price Index ("S&P 500 Index")
                      which can be used as a proxy for the U.S. stock market,
                      has provided annual total returns (capital appreciation
                      plus dividend income) averaging +12.2% for the period from
                      1926 to 1994. While this average return can be used as a
                      guide for setting reasonable expectations for future stock
                      market returns, it may not be useful for forecasting
                      future returns in any particular period, as stock market
                      returns are quite volatile from year to year. The return
                      in individual years has varied from a low of -43.3% to a
                      high of +53.9%, reflecting the short-term volatility of
                      stock prices.
    
 
                      Furthermore, the Portfolio emphasizes medium- and
                      small-capitalization stocks which have historically been
                      more volatile in price than the S&P 500 Index. Among the
                      likely reasons for the greater price volatility of small
                      company stocks are less certain growth prospects of
                      smaller firms, a lower degree of liquidity in the markets
 
                                       10
<PAGE>   13
 
   
                      for such stocks, and the small to negligible dividends
                      generally paid by small companies. Besides exhibiting
                      greater volatility, small- and mid-capitalization stocks
                      have at times fluctuated independently of the broad stock
                      market. Investors should therefore expect small- and
                      mid-capitalization stocks (and hence the Capital
                      Opportunity Portfolio) may be more volatile than the S&P
                      500 Index.
    
 
   
                      The Portfolio exposes investors to industry specific
                      risk -- i.e., the possibility that a particular group of
                      related stocks will decline in price due to industry
                      specific developments. The Portfolio will concentrate its
                      holdings in those industries and securities that, in the
                      adviser's opinion, offer the best prospects of high
                      returns. The Portfolio is expected to hold from 25 to 50
                      securities and may concentrate a large portion of the
                      Portfolio's holdings in a specific industry.
    
 
   
                      The Portfolio will also expose investors to the risks
                      associated with the short selling of stocks. Short selling
                      involves selling shares of stock which the Portfolio does
                      not own, with the expectation that the stock's price will
                      fall. The principal purpose of making a short sale is to
                      enable the Portfolio to benefit from an expected decline
                      in a stock's price. The risk of loss associated with a
                      short sale is greater than that associated with a regular
                      purchase. In a regular purchase, possible loss is limited
                      to the amount for which the security was purchased. In a
                      short sale, the potential loss is unlimited. Short sales
                      of stocks will not exceed 10% of the Portfolio's net
                      assets.
    
 
   
                      The Portfolio exposes investors to the risks associated
                      with investments in index put options. An index put option
                      is a contract to sell an option at a specified price. The
                      risk of loss associated with an index put option is
                      limited to the price for which the index put option was
                      purchased. The use of index put options; however, limits
                      any gain that might be realized should the value of the
                      index increase. Index put options will not exceed 10% of
                      the Portfolio's net assets.
    
 
   
FOREIGN
SECURITIES RISK
                      The Portfolio may opportunistically invest up to 15% of
                      its net assets in foreign equity securities and therefore
                      expose investors to foreign securities risk. For U.S.
                      investors, the returns of foreign securities are
                      influenced by not only the returns on foreign securities
                      themselves, but also by currency risk -- i.e., changes in
                      the value of currencies in which the securities are
                      denominated. In a period when the U.S. dollar rises in
                      value against foreign currencies, the returns on foreign
                      stocks for a U.S. investor will be diminished. By
                      contrast, the returns of foreign securities will be
                      enhanced in a period when the U.S. dollar declines.
                      (Please see "SUPPLEMENTAL INVESTMENT POLICIES" for
                      additional risks associated with investments in foreign
                      securities.)
    
 
   
MANAGER RISK          The Portfolio exposes investors to substantial manager
                      risk which encompasses the potential for the Portfolio to
                      fail to achieve its objective due to activities of the
                      investment adviser. Husic Capital Management, the
                      Portfolio's investment adviser, manages the Portfolio with
                      broad flexibility, in an effort to provide maximum long-
                      term total return. The investment adviser selects stocks
                      based on economic, financial, as well as market analysis
                      and investment judgment. There is no assurance that the
                      Portfolio will achieve its stated objective.
    
- --------------------------------------------------------------------------------
 
                                       11
<PAGE>   14
 
   
INVESTMENT
OBJECTIVE             The Global Asset Allocation Portfolio seeks to provide
                      maximum long-term total return and is therefore intended
                      for investors who have a long-term investment horizon. To
                      that end, the Portfolio will assume above-average risk in
                      seeking potentially above-average returns, although there
                      is no assurance that the Portfolio will achieve
                      above-average returns. Income provided by the Portfolio is
                      expected to fluctuate significantly.
    
- --------------------------------------------------------------------------------
 
   
INVESTMENT
POLICIES
                      The Global Asset Allocation Portfolio invests in a varying
                      mix of stocks, bonds, and cash reserves selected primarily
                      from the following nine major markets: U.S., Japan, the
                      United Kingdom, Germany, France, Spain, Canada, Australia,
                      and Hong Kong. The adviser may expand the Portfolio's
                      investment universe outside these major markets at any
                      time, and may include investments in emerging markets. IN
                      ORDER TO EXECUTE ITS STRATEGY, THE PORTFOLIO'S ADVISER MAY
                      INVEST UP TO 50% OF THE PORTFOLIO'S NET ASSETS IN FUTURES
                      CONTRACTS.
    
 
   
                      The Portfolio's adviser, Strategic Investment Management,
                      will use a variety of quantitative investment models to
                      identify the country and asset classes deemed to be
                      attractive. The adviser seeks asset classes and countries
                      with the highest expected relative return premium,
                      adjusted for risk (e.g., stocks in Japan versus bonds in
                      France). Valuation and liquidity are the primary drivers
                      of the model used to determine the relative expected
                      return premium for each country and asset class. The
                      adviser may concentrate the Portfolio's investment "bets"
                      in only a few selected countries and/or asset classes;
                      however, no more than 50% of the Portfolio's net assets
                      will be invested in an asset class from a single country
                      (e.g., French bonds). There is no limitation on the
                      Portfolio's U.S. assets.
    
 
                      The Portfolio will seek to provide investment results
                      superior to a theoretical benchmark, the "Global Balanced
                      Index", with the following parameters:
 
                           60%     global stock investments
                           30%     global bond investments
                           10%     U.S. cash reserve investments
 
   
                      The 60% global stock component is an adjusted
                      capitalization-weighted average of the established local
                      stock market index in each country. The 30% global bond
                      component is a capitalization-weighted average of the
                      country indices of the Salomon Brothers World Government
                      Bond Index. The U.S. cash reserve is the *** Index of
                      30-day commercial paper. The index is adjusted to reduce
                      the exposure of foreign currency fluctuations by hedging
                      back into U.S. dollars one half of the foreign currency
                      exposure resulting from equity holdings and all of the
                      foreign currency exposure resulting from the bond
                      holdings. The countries included in this index will be the
                      U.S., Canada, the United Kingdom, France, Germany, Spain,
                      Japan, Australia and Hong Kong (there will be no bond
                      investments in Hong Kong). The Global Balanced Index will
                      be reviewed semiannually and with approval of the Fund's
                      Officers may be changed to reflect additions or deletions
                      of countries from the adviser's mandate going forward.
    
 
                                       12
<PAGE>   15
 
   
                      The adviser will predominately utilize an indexed approach
                      to common stock investing but, from time to time, may
                      execute modest "tilts" among common stock holdings (e.g.,
                      lower than average market capitalization or valuation
                      levels) or hold an overweighted position in a security
                      intended to serve as a proxy for an entire market (e.g., a
                      closed-end country fund).
    
 
   
                      Investments will also include direct investments in
                      short-term or long-term government bonds, and U.S. and
                      foreign cash reserves. Bonds in the Portfolio are expected
                      to range in maturity from one to 10 years. In addition to
                      investing in U.S. and foreign stocks and bonds, the
                      Portfolio may also enter into forward currency exchange
                      contracts in order to protect its securities from
                      fluctuations in exchange rates. (Please see "SUPPLEMENTAL
                      INVESTMENT POLICIES" for a description of such contracts.)
    
 
                      With respect to 90% of its assets, the Portfolio is
                      expected to remain fully invested in equity securities.
                      However, the proportion of cash reserves held by the
                      Portfolio may increase if the adviser feels a conservative
                      investment approach is warranted.
- --------------------------------------------------------------------------------
 
   
INVESTMENT
RISKS
SECURITIES MARKET
RISK
                      Market risk for the Portfolio will depend both on the
                      adviser's allocation to stocks, bonds, and money market
                      instruments and the percentage of assets invested in each
                      of the markets available to the adviser. Investments in
                      foreign markets can be as volatile, if not more volatile,
                      than investments in U.S. securities markets. However, a
                      Portfolio that combines both U.S. and foreign securities
                      may benefit from diversification and may have volatility
                      less than that of a portfolio made up solely of foreign
                      securities.
    
 
   
                      To illustrate the volatility of world securities markets
                      for the U.S. investor, the table below sets forth the
                      extremes for world securities market returns for the
                      period 1978 to 1994 as measured by a hypothetical index
                      consisting 60% of the Morgan Stanley Capital International
                      (MSCI) World Index, 30% of the Salomon Brothers World Bond
                      Index, and 10% of cash reserves. This hypothetical index
                      presents a good proxy for the Global Balanced Index, the
                      Portfolio's benchmark index.
    
 
   
<TABLE>
<CAPTION>
                                     AVERAGE ANNUAL RETURNS FOR HYPOTHETICAL WORLD INDEX
                                           OVER VARIOUS TIME HORIZONS (1978-1994)
                                                   1 YEAR     5 YEARS     10 YEARS     15 YEARS
                                                   -------    --------    ---------    ---------
                             <S>                   <C>        <C>         <C>          <C>
                               Best                 26.9%      19.4%        15.6%        12.5%
                               Worst                -9.5%      4.78%        11.5%        11.9%
                               Average              11.9%      12.6%        13.5%        12.1%
</TABLE>
    
 
   
                      As shown, the hypothetical index has provided annual total
                      returns (capital appreciation plus dividend income)
                      averaging 11.9% for the period 1978 to 1994. The return in
                      individual years has varied from a low of -9.5% to a high
                      of 26.9%, which reflects the short-term volatility of
                      securities prices. The historical total return data is
                      provided here only as a guide to potential market risk,
                      and may not be useful for forecasting future returns in
                      any particular period.
    
 
                                       13
<PAGE>   16
 
   
                      The hypothetical index used above as proxy for the
                      Portfolio's benchmark index primarily contains return
                      figures for developed countries; whereas, the Global Asset
                      Allocation Portfolio may invest up to 25% of its holdings
                      in emerging market securities or currencies. Emerging
                      market countries have periodically provided greater
                      returns than developed markets, but with substantially
                      greater volatility. The Portfolio is likely to differ in
                      terms of portfolio composition from the hypothetical index
                      referenced above, and so the performance of the Global
                      Asset Allocation Portfolio should not be expected to
                      mirror the return provided by this hypothetical index.
    
 
FOREIGN MARKET RISK   For U.S. investors, the returns of foreign securities are
                      influenced by not only the returns on foreign securities
                      themselves, but also by currency risk -- i.e., changes in
                      the value of currencies in which the securities are
                      denominated. In a period when the U.S. dollar generally
                      rises against foreign currencies, the returns on foreign
                      stocks for a U.S. investor will be diminished. By
                      contrast, in a period when the U.S. dollar generally
                      declines, the returns of foreign securities will be
                      enhanced.
 
   
                      (Please see "SUPPLEMENTAL INVESTMENT POLICIES" for
                      additional risks associated with investments in foreign
                      securities.)
    
 
   
MANAGER RISK          The Portfolio exposes investors to substantial manager
                      risk which encompasses the potential for the Portfolio to
                      fail to achieve its objective due to activities of the
                      investment adviser. Strategic Investment Management, the
                      Portfolio's investment adviser, selects stocks based
                      primarily on quantitative models in an effort to provide
                      long-term returns that exceed those of comparable
                      unmanaged indexes. There is no assurance that the stocks
                      identified by the adviser's quantitative analysis will
                      enable the Portfolio to meet its stated objective.
    
- --------------------------------------------------------------------------------
 
                                       14
<PAGE>   17
 
   
INVESTMENT
OBJECTIVE             The Global Equity Portfolio seeks to provide maximum
                      long-term total return and is therefore intended for
                      investors who have a long-term investment horizon. To that
                      end, the Portfolio will assume above-average risk in
                      seeking potentially above-average returns, although there
                      is no assurance that the Portfolio will achieve
                      above-average returns. Income provided by the Portfolio is
                      expected to be minimal.
    
- --------------------------------------------------------------------------------
 
   
INVESTMENT
POLICIES
                      The Global Equity Portfolio invests in equity securities
                      of U.S.- and foreign-based companies that exhibit good
                      prospects for growth. The Portfolio seeks to diversify its
                      assets among stocks traded in the U.S. and developed
                      foreign stock markets, as well as emerging stock markets.
                      The Portfolio seeks to diversify among foreign markets
                      including Japan, the United Kingdom, Germany, France,
                      Switzerland, the Netherlands, Sweden, Australia, and Hong
                      Kong, as well as emerging markets, such as Brazil, India,
                      Indonesia, Korea, Mexico, the Philippines and Thailand.
                      However, emerging markets may be more volatile and less
                      liquid than more established foreign markets. Under normal
                      market conditions, the Portfolio will invest at least 65%
                      of its assets in at least three different countries. The
                      Portfolio will generally limit emerging market holdings to
                      25%.
    
 
   
                      The Portfolio's adviser, Baring Asset Management, selects
                      stocks by weighting the (i) growth, (ii) valuation, and
                      (iii) liquidity of equity securities of U.S.- and foreign-
                      based companies. Country allocations are determined based
                      on economic trends, valuation levels, and earnings growth
                      relative to other markets. The adviser believes that both
                      the allocation of the Portfolio's assets across foreign
                      stock markets, and the selection of stocks are important
                      in managing a global equity portfolio.
    
 
   
                      Besides investing in equity securities, the Portfolio may
                      also enter into forward foreign currency exchange
                      contracts in order to protect its securities from
                      fluctuations in exchange rates. (See "Supplemental
                      Investment Policies" for a description of such contracts.)
    
- --------------------------------------------------------------------------------
 
INVESTMENT RISKS
SECURITIES MARKET
RISK
                      The Portfolio exposes investors to the market risks
                      associated with world stock markets. International stock
                      and bond markets have periodically offered above-average
                      returns relative to U.S. investments. However,
                      commensurate with that opportunity for greater return lies
                      greater risk. Risk factors unique to international
                      investing are the volatility of a country's financial
                      markets, a country's political and economic climate, and
                      fluctuations in the value of its currency.
 
                      Investments in foreign stock markets can be as volatile,
                      if not more volatile, than investments in U.S. markets.
                      However, a Portfolio that combines both U.S. and foreign
                      stocks may benefit from diversification and may have
                      volatility less than that of a pure foreign stock
                      portfolio.
 
   
                      The average annual returns of the Morgan Stanley Capital
                      International (MSCI) World Index can be used as an
                      indicator of the world market risk of the Global Equity
                      Portfolio. The world stock index returns have provided
                      annual total returns (capital appreciation plus dividend
                      income) averaging 12.7% for the period 1970-1994. The
                      return in individual years has varied from a low of -24.5%
                      to a high of 42.8%, which reflects the short-term
                      volatility of stock prices. The historical total
    
 
                                       15
<PAGE>   18
 
                      return data is provided here only as a guide to potential
                      market risk, and may not be useful for forecasting future
                      returns in any particular period.
 
                      The MSCI World Index primarily contains return figures for
                      developed countries; whereas, the Portfolio may invest 25%
                      of its holdings in emerging market securities. Emerging
                      market countries have periodically provided greater
                      returns than developed markets, but with substantially
                      greater volatility. The Portfolio is likely to differ in
                      terms of portfolio composition from the MSCI World Index,
                      and so the performance of the Global Equity Portfolio
                      should not be expected to mirror the return provided by
                      the Index.
 
FOREIGN MARKET RISK   The Portfolio also exposes investors to foreign market
                      risk. For U.S. investors, the returns of foreign
                      securities are influenced by not only the returns on
                      foreign securities themselves, but also by currency
                      risk -- i.e., changes in the value of currencies in which
                      the securities are denominated. In a period when the U.S.
                      dollar generally rises against foreign currencies, the
                      returns on foreign stocks for a U.S. investor will be
                      diminished. By contrast, in a period when the U.S. dollar
                      generally declines, the returns of foreign securities will
                      be enhanced.
 
   
                      Please see "Supplemental Investment Policies" for
                      additional risks associated with investments in foreign
                      securities.
    
 
   
MANAGER RISK          The Portfolio exposes investors to substantial manager
                      risk which encompasses the potential for the Portfolio to
                      fail to achieve its objective due to activities of the
                      investment adviser, Baring Asset Management Limited. The
                      Portfolio's investment adviser selects stocks based on
                      economic, financial and market analysis and investment
                      judgment. There is no assurance that the Portfolio will
                      meet its stated objective.
    
- --------------------------------------------------------------------------------
 
   
WHO SHOULD INVEST
LONG-TERM
INVESTORS SEEKING
MAXIMUM TOTAL RETURN  The Portfolios are designed for investors who have a
                      long-term (five years or longer) investment horizon, and
                      seek long-term total return. The Portfolios are designed
                      for investors with the perspective, patience, and
                      financial resources to assume above-average risk and
                      volatility for the potential of achieving above-average
                      return. Investors in the Portfolios should be able to
                      tolerate sudden, sometimes substantial fluctuations in the
                      value of their investments. Each Portfolio's share price
                      is expected to be volatile.
    
 
   
                      The AGGRESSIVE GROWTH PORTFOLIO is appropriate for
                      investors who seek to invest in a quantitatively managed
                      portfolio of diversified U.S. equity securities.
    
 
   
                      The CAPITAL OPPORTUNITY PORTFOLIO is appropriate for
                      investors who seek to invest in an actively managed
                      portfolio of U.S. equity securities and are willing to
                      accept the risks associated with short selling stocks and
                      index put options.
    
 
   
                      The GLOBAL ASSET ALLOCATION PORTFOLIO is appropriate for
                      investors who seek to invest in an actively managed
                      portfolio of U.S. and foreign stocks, bonds and cash
                      reserves and are willing to accept the risks associated
                      with a high level (up to 50% of the Portfolio's net
                      assets) of derivative investments.
    
 
   
                      The GLOBAL EQUITY PORTFOLIO is appropriate for investors
                      who seek to invest in an actively managed Portfolio of
                      U.S. and foreign equity securities.
    
 
                                       16
<PAGE>   19
 
                      Because of the risks associated with common stock
                      investments, all four Portfolios are intended to be
                      long-term investment vehicles and are not designed to
                      provide investors with a means of speculating on
                      short-term market movements. Investors who engage in
                      excessive account activity generate additional costs which
                      are borne by all of the Fund's shareholders. In order to
                      minimize such costs, the Fund has adopted the following
                      policies. The Fund reserves the right to reject any
                      purchase request (including exchange purchases from other
                      Vanguard portfolios) that is reasonably deemed to be
                      disruptive to efficient portfolio management, either
                      because of the timing of the investment or previous
                      excessive trading by the investor. Additionally, the Fund
                      has adopted exchange privilege limitations as described in
                      the section entitled "Exchange Privilege Limitations."
                      Finally, the Fund reserves the right to suspend the
                      offering of its shares.
 
   
                      The Fund is not intended as a complete investment program.
                      Most investors should maintain diversified holdings of
                      securities with different risk characteristics --
                      including common stocks, bonds and money market
                      instruments. Investors may also wish to complement an
                      investment in the Fund with other types of common stock
                      investments.
    
- --------------------------------------------------------------------------------
 
   
SUPPLEMENTAL
INVESTMENT
POLICIES
EACH PORTFOLIO MAY
INVEST IN SHORT-TERM
FIXED-INCOME
SECURITIES
                      The Portfolios of the Fund may invest temporarily in
                      certain short-term fixed income securities for defensive
                      purposes. Such securities may be used to invest
                      uncommitted cash balances or to maintain liquidity to meet
                      shareholder redemptions. Although it is not expected to do
                      so, the Fund may invest up to 100% of its assets in such
                      securities. These securities include: obligations of the
                      United States Government and its agencies or
                      instrumentalities; commercial paper, bank certificates of
                      deposit, and bankers' acceptances; and repurchase
                      agreements collateralized by these securities.
                      Additionally, the Global Asset Allocation Portfolio may
                      invest up to 15% of its net assets in cash reserves after
                      major up movements in the prices of the Portfolio's stocks
                      when the investment adviser is not satisfied with
                      investment alternatives.
    
 
   
EACH PORTFOLIO MAY
INVEST IN SUCH
DERIVATIVE SECURITIES
AS: FUTURES CONTRACTS,
OPTIONS AND WARRANTS,
CONVERTIBLE SECURITIES,
AND SWAP AGREEMENTS   Each Portfolio of the Fund may utilize stock futures
                      contracts, options, including puts and calls, warrants,
                      convertible securities and swap agreements to a limited
                      extent. Each Portfolio may use over-the-counter options
                      when exchange traded options do not exist. Specifically,
                      the Capital Opportunity, Aggressive Growth and Global
                      Equity Portfolios may enter into futures contracts and
                      options provided that not more than 5% of their assets are
                      required as a margin deposit for futures contracts or
                      options, and provided that not more than 20% of each
                      Portfolio's assets is invested in futures and options at
                      any time. INVESTORS IN THE GLOBAL ASSET ALLOCATION
                      PORTFOLIO SHOULD BE AWARE THE PORTFOLIO'S ADVISER MAY
                      INVEST UP TO 50% OF THE PORTFOLIO'S NET ASSETS IN FUTURES
                      CONTRACTS PROVIDED THAT NOT MORE THAN 15% OF THE
                      PORTFOLIO'S ASSETS IS REQUIRED FOR MARGIN REQUIREMENTS.
                      The Global Asset Allocation Portfolio may purchase options
                      provided that not more than 5% of its assets are required
                      as a margin deposit, and provided that not more than 20%
                      of its assets is invested in options at any time.
    
 
                                       17
<PAGE>   20
 
   
FUTURES CONTRACTS,
OPTIONS, WARRANTS,
CONVERTIBLE SECURITIES
AND SWAP AGREEMENTS
POSE CERTAIN RISKS    The risk of loss associated with futures contracts in some
                      strategies can be substantial due both to the low margin
                      deposits required and the extremely high degree of
                      leverage involved in futures pricing. As a result, a
                      relatively small price movement in a futures contract
                      may result in an immediate and substantial loss or gain.
                      However, the Portfolios will not use futures contracts,
                      options, warrants, convertible securities and swap
                      agreements for speculative purposes or to leverage their
                      net assets. Accordingly the primary risks associated with
                      the use of futures contracts, options, including puts and
                      calls, warrants, convertible securities and swap
                      agreements by the Portfolio are: (1) imperfect
                      correlation between the change in market value of the
                      stocks held by a Portfolio and the prices of futures
                      contracts, options, warrants, convertible securities and
                      swap agreements; (ii) the risk that the investment
                      advisers will incorrectly predict stock market and
                      interest rate trends; and (iii) possible lack of a liquid
                      secondary market for a futures contract and the resulting
                      inability to close a futures position prior to its
                      maturity date. The risk of imperfect correlation will be
                      minimized by investing only in those contracts whose
                      behavior is expected to resemble that of a Portfolio's
                      underlying securities. The risk that a Portfolio will be
                      unable to close out a futures position will be minimized
                      by entering into such transactions on an exchange with an
                      active and liquid secondary market. However, options,
                      warrants, convertible securities and swap agreements
                      purchased or sold over-the-counter may be less liquid
                      than exchange traded securities. Illiquid securities, in
                      general, may not represent more than 15% of the net
                      assets of a Portfolio of the Fund.
    
 
                      Additionally, each Portfolio's investments in warrants
                      will not exceed more than 15% of their assets. Futures
                      contracts, options, warrants, convertible securities and
                      swap agreements may be used for several reasons; to
                      simulate full investment while retaining a cash balance
                      for fund management purposes, to facilitate the portfolio
                      management process, or to reduce transaction costs. The
                      Portfolios may not use futures and options to leverage
                      their net assets.
 
                      Swap agreements are contracts between parties in which one
                      party agrees to make payments to the other party based on
                      the change in market value of a specified index or asset.
                      In return, the other party agrees to make payments to the
                      first party based on the return of a different specified
                      index or asset. Although swap agreements entail the risk
                      that a party will default on its payment obligations the
                      Portfolios will minimize this risk by entering into
                      agreements that mark to market no less frequently than
                      quarterly. Swap agreements also bear the risk that the
                      Portfolios will not be able to meet their obligations to
                      the counterparty. This risk will be mitigated by having
                      the Portfolios invest in the specific asset for which they
                      are obligated to pay a return. Swap agreements are
                      considered illiquid, and are therefore subject to the 15%
                      limitation on illiquid securities described in the
                      Statement of Additional Information.
 
   
ALL PORTFOLIOS MAY
LEND THEIR SECURITIES
                      All Portfolios of the Fund may lend securities to
                      qualified institutional investors for either short-term or
                      long-term periods for the purpose of realizing additional
                      income. Loans of securities by a Portfolio will be
                      collateralized by cash, letters of credit, or securities
                      issued or guaranteed by the U.S. Government or its
                      agencies.
    
 
                                       18
<PAGE>   21
 
                      The collateral will equal at least 100% of the current
                      market value of the loaned securities, and such loans may
                      not exceed 33 1/3% of the value of the Portfolio's net
                      assets.
 
ALL PORTFOLIOS MAY
OWN RESTRICTED
SECURITIES
                      All Portfolios of the Fund may own restricted securities
                      to a limited extent. Restricted securities are securities
                      which are subject to restrictions upon sale under the
                      Securities Act of 1933. Each Portfolio may invest up to
                      15% of its net assets in restricted securities. (Included
                      within this limit are restricted securities and, other
                      securities for which price quotations are not readily
                      available, as well as OTC options and swap agreements.)
 
THE GLOBAL EQUITY AND
GLOBAL ASSET
ALLOCATION PORTFOLIOS
MAY ENTER INTO
FORWARD CURRENCY
CONTRACTS             The Global Equity and Global Asset Allocation Portfolios
                      may enter into forward foreign currency exchange
                      contracts. Such contracts are used to protect the
                      Portfolio's securities against uncertainty in the level of
                      future foreign exchange rates.
 
                      A forward foreign currency exchange contract is an
                      obligation to purchase or sell a specific currency at a
                      future date, which may be any fixed number of days from
                      the date of the contract agreed upon by the parties, at a
                      price set at the time of the contract. The contracts may
                      be bought or sold to protect the Portfolios, to a limited
                      extent, against adverse changes in exchange rates between
                      foreign currencies and the U.S. dollar. Such contracts,
                      which protect the value of a Portfolio's investment
                      securities against a decline in the value of a currency,
                      do not eliminate fluctuations in the underlying prices of
                      the securities. They simply establish an exchange rate at
                      a future date. Also, although such contracts tend to
                      minimize the risk of loss due to a decline in the value of
                      a hedged currency, at the same time they tend to limit any
                      potential gain that might be realized should the value of
                      such currency increase.
 
PORTFOLIO TURNOVER    Although all Portfolios of the Fund seek to invest for the
                      long term, they retain the right to sell securities
                      irrespective of how long they have been held. Following is
                      the annual portfolio turnover expected for each Portfolio
                      is provided in the table below.
 
   
<TABLE>
<CAPTION>
                                           PORTFOLIO                    ESTIMATED ANNUAL TURNOVER
                                          ----------                      ---------------------
                        <S>                                            <C>
                        Aggressive Growth Portfolio                             100-150%
                        Capital Opportunity Portfolio                            75-125%
                        Global Asset Allocation                                 100-200%
                        Global Equity Portfolio                                  50-100%
</TABLE>
    
 
   
                      A turnover rate of 100% would occur, for example, if all
                      the securities of a Portfolio were replaced within one
                      year. Higher portfolio turnover rates generally result in
                      increased brokerage commissions and the realization of
                      higher capital gains, which may make these Portfolios more
                      attractive for the tax-deferred portion of an investment
                      portfolio. Each Portfolio is managed without regard to tax
                      ramifications.
    
- --------------------------------------------------------------------------------
 
                                       19
<PAGE>   22
                    
INVESTMENT            Each Portfolio has adopted certain limitations designed to
LIMITATIONS           reduce its exposure to specific situations. Some of these
                      limitations are that a Portfolio will not:
THE FUND HAS ADOPTED
CERTAIN FUNDAMENTAL   (a) with respect to 75% of the value of its total assets,
LIMITATIONS               invest more than 5% of its assets in the securities of
                          any single issuer (other than obligations issued or
                          guaranteed as to principal and interest by the U.S.
                          Government, its agencies or instrumentalities);
                      (b) with respect to 75% of the value of its total assets,
                          purchase more than 10% of the voting securities of any
                          issuer;
                      (c) invest more than 25% of its assets in any one
                          industry; and
                      (d) borrow money except from banks for temporary or
                          emergency purposes, and in no event in excess of 15%
                          of the market value of its total assets.
 
                      These investment limitations are considered at the time
                      investment securities are purchased. The limitations
                      described here and in the Statement of Additional
                      Information are fundamental, and may only be changed with
                      the approval of a majority of a Portfolio's shareholders.
- --------------------------------------------------------------------------------
                
MANAGEMENT            The Fund is a member of The Vanguard Group of Investment
OF THE FUND           Companies, a family of more than 30 investment companies
                      with more than 80 distinct portfolios and total assets in
VANGUARD              excess of $130 billion. Through their jointly-owned
ADMINISTERS           subsidiary, The Vanguard Group, Inc. ("Vanguard"), the
AND DISTRIBUTES       Fund and the other funds in the Group obtain at cost
THE FUND              virtually all of their corporate management,
                      administrative and distribution services. Vanguard also
                      provides investment advisory services on an at-cost basis
                      to certain funds. As a result of Vanguard's unique
                      corporate structure, the Vanguard funds have costs 
                      substantially lower than those of most competing mutual 
                      funds. In 1993, the average expense ratio (annual costs 
                      including advisory fees divided by total net assets) 
                      for the Vanguard funds amounted to approximately .30% 
                      compared to an average of 1.05% for the mutual fund 
                      industry (data provided by Lipper Analytical Services).
 
                      The Officers of the Fund manage its day-to-day operations
                      and are responsible to the Fund's Board of Directors. The
                      Directors set broad policies for the Fund and chose its
                      Officers. A list of the Directors and Officers of the Fund
                      and a statement of their present positions and principal
                      occupations during the past five years can be found in the
                      Statement of Additional Information.
 
                      Vanguard employs a supporting staff of management and
                      administrative personnel needed to provide the requisite
                      services to the funds and provides the funds with
                      necessary office space, furnishings and equipment.
 
                      Each Fund pays its share of Vanguard's total expenses,
                      which are allocated among the funds under methods approved
                      by the Board of Directors (Trustees) of each fund. In
                      addition, each fund bears its own direct expenses, such as
                      legal, auditing and custodial fees.
 
                                       20
<PAGE>   23
 
                      Vanguard provides distribution and marketing services to
                      the funds. The funds are available on a no-load basis,
                      (i.e., there are no sales commissions or 12b-1 fees).
                      However, each fund bears its allocated share of the
                      Group's distribution costs.
- --------------------------------------------------------------------------------
 
INVESTMENT
ADVISERS
VANGUARD SERVES
AS ADVISER TO THE
AGGRESSIVE GROWTH
PORTFOLIO             The AGGRESSIVE GROWTH PORTFOLIO receives investment
                      advisory services from VANGUARD'S CORE MANAGEMENT GROUP.
                      The Core Management Group also provides investment
                      advisory services to several other Vanguard Funds,
                      including Vanguard Index Trust, Vanguard International
                      Equity Index Fund, Vanguard Institutional Index Fund,
                      Vanguard Balanced Index Fund, the Equity Index Portfolio
                      of the Vanguard Variable Insurance Fund, the Growth and
                      Income and Capital Appreciation Portfolios and the equity
                      portion of the Balanced Portfolio of Vanguard Tax-Managed
                      Fund, and a portion of Vanguard/Windsor II and
                      Vanguard/Morgan Growth Fund, as well as to several indexed
                      separate accounts. Total assets under management by the
                      Core Management Group were $18.3 billion as of September
                      30, 1994. The Core Management Group is supervised by the
                      Officers of the Fund. George U. Sauter, Vice President of
                      the Core Management Group and the Portfolio Manager of
                      each of the Funds managed by the Core Management Group,
                      has served in this capacity for each of the Vanguard Funds
                      advised by the Group since 1987, and utilizes a team
                      approach to manage the Portfolio's assets.
 
                      Vanguard's Core Management Group will provide advisory
                      services on an at-cost basis. In placing portfolio
                      transactions, Vanguard's Core Management Group uses its
                      best judgment to choose the broker most capable of
                      providing the brokerage services necessary to obtain the
                      best available price and most favorable execution at the
                      lowest commission rate. The full range and quality of
                      brokerage services available are considered in making
                      these determinations. In selecting broker-dealers to
                      execute securities transactions for the Portfolio,
                      consideration will be given to such factors as: the price
                      of the security; the rate of the commission; the size and
                      difficulty of the order; the reliability, integrity,
                      financial condition, general execution, and operational
                      capabilities of competing brokers-dealers; and the
                      brokerage and research services provided to the Portfolio.
                      In those instances where it is reasonably determined that
                      more than one broker can offer the services needed to
                      obtain the best available price and most favorable
                      execution, consideration may be given to those brokers
                      which supply statistical information and provide other
                      services in addition to execution services to the
                      Portfolio.
 
   
HUSIC CAPITAL
MANAGEMENT SERVES
AS ADVISER TO THE
CAPITAL OPPORTUNITY
PORTFOLIO
                      The CAPITAL OPPORTUNITY PORTFOLIO is managed by HUSIC
                      CAPITAL MANAGEMENT ("Husic"), 555 California Street, Suite
                      2900, San Francisco, California 94104. Husic provides
                      asset management services to companies, institutions, and
                      individuals as well as approximately 13% of the Vanguard
                      Morgan Growth Fund. As of December 31, 1994 Husic had over
                      $2.3 billion in assets under management.
    
 
                      For the services provided by Husic under the investment
                      advisory agreement the Portfolio will pay Husic a basic
                      fee at the end of each fiscal quarter, calculated by
 
                                       21
<PAGE>   24
 
                      applying a quarterly rate based on the following annual
                      percentage rates, to the average month-end net assets of
                      the Aggressive Growth Portfolio for the quarter:
 
   
<TABLE>
<CAPTION>
                                                   NET ASSETS                      RATE
                                              ---------------------                ----
                                  <S>                                              <C>
                                  First $250 million                               .40%
                                  Next $250 million                                .30%
                                  Next $500 million                                .20%
                                  Over $1 billion                                  .15%
</TABLE>
    
 
   
                      Effective with the quarter ending July 31, 1996, the basic
                      advisory fee may be increased or decreased by applying an
                      adjustment formula based on the investment performance of
                      the Capital Opportunity Portfolio relative to the
                      Aggressive Growth Stock Fund Index. The following table
                      sets forth the incentive/penalty adjustment to the basic
                      advisory fee payable by the Portfolio to Husic.
    
 
   
<TABLE>
<CAPTION>
                             ANNUAL NET         
                            PERFORMANCE         
                        DIFFERENCE RELATIVE     TOTAL FEE AS A PERCENTAGE OF
                            TO BENCHMARK                  BASE FEE          
                        --------------------    ----------------------------
                        <S>                     <C>
                           Less than -4%                     25.0%
                             -4% to -2%                      62.5%
                             -2% to +2%                     100.0%
                           More than +4%                    175.0%
</TABLE>
    
 
   
                      Under the rules of the Security and Exchange Commission,
                      the incentive/penalty fee structure will not be fully
                      operable until the quarter ending July 31, 1998, and,
                      until that date, will be calculated according to certain
                      transition rules. See the Statement of Additional
                      Information for a detailed description of the
                      incentive/penalty fee schedule for Husic and the
                      applicable transition rules.
    
 
BARING ASSET
MANAGEMENT SERVE AS
ADVISER TO THE GLOBAL
EQUITY PORTFOLIO      The GLOBAL EQUITY PORTFOLIO is managed by BARING
                      INTERNATIONAL INVESTMENT LIMITED, a wholly-owned
                      subsidiary of Baring Asset Management Limited, 155
                      Bishopsgate, London. Baring Asset Management was founded
                      in 1762 and provides asset management services to
                      companies, institutions, and individuals. As of September
                      30, 1994, Baring Asset Management has more than $44
                      billion in assets under management, and more than 100
                      investment professionals in offices throughout the world.
 
                      The investment philosophy at Baring International
                      Investment is that investing in growing economies and
                      growing companies at the right valuation leads to superior
                      long-term results. Baring International Investment
                      utilizes a regional strategic team approach to portfolio
                      management, where each team consists of experienced
                      members, who are specialists, that conduct the necessary
                      research for the team. Philip Bullen, Director, has been
                      designated as portfolio manager for the assets of the
                      Global Equity Portfolio. He has 17 years of investment
                      experience and specializes in asset and country
                      allocation. Mr. Bullen joined Baring in 1977 as a U.S.
                      Specialist. He received his MBA from the City University
                      Business School and holds a CFA designation.
 
                                       22
<PAGE>   25
 
                      The Global Equity Portfolio pays Baring International
                      Investment a basic fee at the end of each fiscal quarter,
                      calculated by applying a quarterly rate, based on the
                      following annual percentage rates, to the average
                      month-end assets of the Portfolio for the quarter:
 
<TABLE>
<CAPTION>                                                                         
                                                                                   ANNUAL
                                                  NET ASSETS                       RATE 
                                            ---------------------                 ------
                                <S>                                               <C>
                                First $100 million                                 0.35%
                                Next $150 million                                  0.30%
                                Next $250 million                                  0.25%
                                Over $500 million                                  0.20%
</TABLE>
 
   
                      Effective with the quarter ending July 31, 1996, the basic
                      advisory fee may be increased or decreased by applying an
                      adjustment formula based on the investment performance of
                      the Portfolio relative to the Morgan Stanley Capital
                      International (MSCI) All Country Index. The following
                      table sets forth the incentive/penalty adjustment to the
                      basic advisory fee payable by the Portfolio to Baring
                      International Investment under the investment advisory
                      agreement. The adjustments to the fee change
                      proportionately with performance relative to the Index.
    
 
<TABLE>
<CAPTION>
                               CUMULATIVE THREE YEAR PERFORMANCE                                   
                                   DIFFERENTIAL VS. THE MSCI                       INCENTIVE/      
                                       ALL COUNTRY INDEX                     PENALTY FEE ADJUSTMENT
                        ------------------------------------------------    ------------------------
                        <S>                                                 <C>
                        Less than 3%                                        0.50 X Basic Fee
                        Between 3% and 6%                                   0.75 to 1.00 X Basic Fee
                        Between 6% and 9%                                   1.00 to 1.25 X Basic Fee
                        Between 9% and 12%                                  1.25 to 1.50 X Basic Fee
                        More than 12%                                       1.50 X Basic Fee
</TABLE>
 
   
                      Under rules of the Securities and Exchange Commission, the
                      incentive/penalty fee adjustment will not be fully
                      operable until the quarter ending July 31, 1998, and until
                      that date, will be calculated according to certain
                      transition rules. A detailed description of the
                      incentive/penalty fee adjustment schedule for Baring
                      International Investment and the applicable transition
                      rules is contained in the Statement of Additional
                      Information.
    
 
   
STRATEGIC INVESTMENT
MANAGEMENT
SERVES AS ADVISER TO
THE GLOBAL ASSET
ALLOCATION PORTFOLIO
                      The GLOBAL ASSET ALLOCATION PORTFOLIO is managed by
                      STRATEGIC INVESTMENT MANAGEMENT, 1001 19th Street North,
                      16th Floor, Arlington, Virginia 22209. Strategic
                      Investment Management provides asset management services
                      to companies, institutions, and individuals. As of January
                      17, 1995, Strategic Investment Management (and its
                      affiliated companies) had over $15 billion in assets under
                      management.
    
 
   
                      For the services provided by Strategic Investment
                      Management under the investment advisory agreement the
                      Portfolio will pay Strategic Investment Management a basic
                      fee at the end of each fiscal quarter, calculated by
                      applying a quarterly rate
    
 
                                       23
<PAGE>   26
 
   
                      based on the following annual percentage rates, to the
                      average month-end net assets of the Global Asset
                      Allocation Portfolio for the quarter:
    
 
   
<TABLE>
<CAPTION>
                                                   NET ASSETS                      RATE
                                              ---------------------                ----
                                  <S>                                              <C>
                                  First $250 million                               .40 %
                                  Next $250 million                                .35 %
                                  Next $500 million                                .25 %
                                  Over $1 billion                                  .20 %
</TABLE>
    
 
   
                      Effective with the quarter ending July 31, 1996, the basic
                      advisory fee may be increased or decreased by applying an
                      adjustment formula based on the investment performance of
                      the Global Asset Allocation Portfolio relative to the
                      theoretical Global Balanced Index which is calculated as
                      follows:
    
 
   
<TABLE>
                              <S>     <C>
                              60%     global stock investments
                              30%     global bond investments
                              10%     U.S. cash reserve investments
</TABLE>
    
 
   
                      The 60% global stock component is an adjusted
                      capitalization-weighted average of the established local
                      stock market index in each country. The 30% global bond
                      component is a capitalization-weighted average of the
                      country indices of the Salomon Brothers World Government
                      Bond Index. The U.S. cash reserve is the *** Index of
                      30-day commercial paper. The index is adjusted to reduce
                      the exposure of foreign currency fluctuations by hedging
                      back into U.S. dollars one half of the foreign currency
                      exposure resulting from equity holdings and all of the
                      foreign currency exposure resulting from the bond
                      holdings. The countries included in this index will be the
                      U.S., Canada, the United Kingdom, France, Germany, Spain,
                      Japan, Australia and Hong Kong (there will be no bond
                      investments in Hong Kong). The Global Balanced Index will
                      be reviewed semiannually and with approval of the Fund's
                      Officers may be changed to reflect additions or deletions
                      of countries from the advisors mandate going forward.
    
 
   
                      The following table sets forth the incentive/penalty
                      adjustment to the basic advisory fee payable by the
                      Portfolio to Strategic Investment Management.
    
 
   
<TABLE>
<CAPTION>
                             ANNUAL NET                                      
                            PERFORMANCE                                      
                        DIFFERENCE RELATIVE     TOTAL FEE AS A PERCENTAGE OF 
                            TO BENCHMARK                  BASE FEE           
                        --------------------    ---------------------------- 
                        <S>                     <C>
                          Less than -0.25%                     25%
                          -0.25% to +0.75%                     50%
                          +0.75% to +1.75%                     75%
                          +1.75% to +2.75%                    100%
                          +2.75% to +3.75%                    125%
                          +3.75% to +4.75%                    150%
                            Over +4.75%                       175%
</TABLE>
    
 
   
                      Under the rules of the Security and Exchange Commission,
                      the incentive/penalty fee structure will not be fully
                      operable until the quarter ending July 31, 1998, and,
                      until
    
 
                                       24
<PAGE>   27
 
   
                      that date, will be calculated according to certain
                      transition rules. See the Statement of Additional
                      Information for a detailed description of the
                      incentive/penalty fee schedule for Husic and the
                      applicable transition rules.
    
 
   
                      The Fund has authorized Husic Capital Management,
                      Strategic Investment Management, and Baring Asset
                      Management Limited to pay higher commissions in
                      recognition of brokerage services felt necessary for the
                      achievement of better execution, provided the investment
                      adviser believes this to be in the best interest of the
                      Portfolio. Although the Portfolio does not market its
                      shares through intermediary brokers or dealers, the
                      Portfolio may place orders for the Portfolio with
                      qualified broker-dealers who recommend the Portfolio to
                      clients, if the Officers of the Fund believe that the
                      quality of the transaction and the commission are
                      comparable to what they would be with other qualified
                      brokerage firms.
    
 
                      The Fund's Board of Directors may, without the approval of
                      shareholders, provide for: (a) the employment of a new
                      investment adviser pursuant to the terms of a new advisory
                      agreement either as a replacement for an existing adviser
                      or as an additional adviser; (b) a change in the terms of
                      an advisory agreement; and (c) the continued employment of
                      an existing adviser on the same advisory contract terms
                      where a contract has been assigned because of a change in
                      control of the adviser. Any such change will only be made
                      upon not less than 30 days' prior written notice to
                      shareholders of the Fund which shall include substantially
                      the information concerning the adviser that would have
                      normally been included in a proxy statement. In the event
                      that such notice is given, the 1% redemption fee will be
                      waived for a period of 90 days.
- --------------------------------------------------------------------------------
 
   
DIVIDENDS, CAPITAL
GAINS AND TAXES       The Aggressive Growth, Capital Opportunity, and Global
                      Equity Portfolios are expected to pay dividends annually
                      from ordinary income. The Global Asset Allocation
                      Portfolio is expected to pay dividends semi-annually from
                      ordinary income. Net capital gains distributions, if any,
                      will be made annually. In addition, to satisfy certain
                      distribution requirements of the Tax Reform Act of 1986,
                      the Fund may declare special year-end dividend and capital
                      gains distributions during the month of December. Such
                      distributions, if received by shareholders by January 31,
                      are deemed to have been paid by the Fund and received by
                      shareholders on December 31 of the prior year.
    
 
                      Dividends and capital gains distributions may be
                      automatically reinvested or received in cash. See
                      "Choosing a Distribution Option" for a description of
                      these options.
 
                      The Fund intends to qualify for taxation as a "regulated
                      investment company" under the Internal Revenue Code so
                      that it will not be subject to federal income tax to the
                      extent its income is distributed to shareholders.
                      Dividends paid by the Fund from net investment income,
                      whether received in cash or reinvested in additional
                      shares, will be taxable to shareholders as ordinary
                      income.
 
                      For corporate investors, dividends from net investment
                      income will generally qualify in part for the
                      intercorporate dividends-received deduction. However, the
 
                                       25
<PAGE>   28
 
                      portion of the dividends so qualified depends on the
                      aggregate taxable qualifying dividend income received by
                      the Fund from domestic (U.S.) sources.
 
                      Distributions paid by the Fund from long-term capital
                      gains, whether received in cash or reinvested in
                      additional shares, are taxable as long-term capital gains,
                      regardless of the length of time you have owned shares in
                      the Fund. Capital gains distributions are made when the
                      Fund realizes net capital gains on sales of portfolio
                      securities during the year. The Fund does not seek to
                      realize any particular amount of capital gains during a
                      year; rather, realized gains are a by-product of portfolio
                      management activities. Consequently, capital gains
                      distributions may be expected to vary considerably from
                      year to year; there will be no capital gains distributions
                      in years when the Fund realizes net capital losses.
 
                      Note that if you elect to receive capital gains
                      distributions in cash, instead of reinvesting them in
                      additional shares, you are in effect reducing the capital
                      at work for you in the Fund. Also, keep in mind that if
                      you purchase shares in the Fund shortly before the record
                      date for a dividend or capital gains distribution, a
                      portion of your investment will be returned to you as a
                      taxable distribution, regardless of whether you are
                      reinvesting your distributions or receiving them in cash.
 
                      The Fund will notify you annually as to the tax status of
                      its dividend and capital gains distribution.
 
   
THE GLOBAL ASSET
ALLOCATION AND
GLOBAL EQUITY
PORTFOLIOS MAY
"PASS THROUGH"
FOREIGN TAXES         The Global Asset Allocation and Global Equity Portfolios
                      may elect to "pass through" to the Portfolios'
                      shareholders the amount of foreign income taxes paid by
                      the Portfolio(s). The Portfolio(s) will make such an
                      election only if it deems it to be in the best interests
                      of its shareholders.
    
 
                      If this election is made, shareholders of the Portfolio(s)
                      will be required to include in their gross income their
                      pro rata share of foreign taxes paid by the Portfolio.
                      However, shareholders will be able to treat their pro rata
                      share of foreign taxes as either an itemized deduction or
                      a foreign tax credit against U.S. income taxes (but not
                      both) on their tax return.
 
A CAPITAL GAIN OR
LOSS MAY BE REALIZED
UPON EXCHANGE OR
REDEMPTION            A sale of shares of the Fund is a taxable event and may
                      result in a capital gain or loss. A capital gain or loss
                      may be realized from an ordinary redemption of shares or
                      an exchange of shares between two mutual funds (or two
                      portfolios of a mutual fund).
 
                      Dividend distributions, capital gains distributions, and
                      capital gains or losses from redemptions and exchanges may
                      be subject to state and local taxes.
 
                      The Fund is required to withhold 31% of taxable
                      dividends, capital gains distributions, and redemptions
                      paid to shareholders who have not complied with IRS
                      taxpayer identification regulations. You may avoid this
                      withholding requirement by certifying on your Account
                      Registration Form your proper Social Security or Employer
                      Identification number and by certifying that you are not
                      subject to backup withholding.
 
                                       26
<PAGE>   29
 
                      The Fund has obtained a Certificate of Authority to do
                      business as a foreign corporation in Pennsylvania and does
                      business and maintains an office in that state. In the
                      opinion of counsel, the shares of the Fund are exempt from
                      Pennsylvania personal property taxes.
 
                      The tax discussion set forth on the previous page is
                      included for general information only. Prospective
                      investors should consult their own tax advisers concerning
                      the tax consequences of an investment in the Fund. The
                      Fund is managed without regard to tax ramifications.
- --------------------------------------------------------------------------------
 
THE SHARE PRICE
OF EACH PORTFOLIO     The Fund's share price or "net asset value" per share is
                      determined by dividing the total assets of the Fund, less
                      all liabilities, by the total number of shares
                      outstanding. The net asset value is calculated at the
                      close of regular trading (generally 4:00 p.m. Eastern
                      time) each day the New York Stock Exchange is open for
                      trading.
 
   
                      Market values for securities listed on an exchange are
                      based upon the latest quoted sales price as of 4:00 p.m.
                      Eastern time on the valuation date. Securities not traded
                      on the valuation date are valued at the mean of the latest
                      quoted bid and asked price. Securities not listed on an
                      exchange are valued at the latest quoted bid price.
                      Temporary cash investments are valued at cost, plus or
                      minus any amortized discount or premium, which
                      approximates market value. All prices of listed securities
                      are taken from the exchange where the security is
                      primarily traded. Securities may be valued on the basis of
                      prices provided by a pricing service when such prices are
                      believed to reflect the fair market value of such
                      securities. Securities for which market quotations are not
                      readily available or which are restricted as to sale and
                      other assets are valued by such methods as the Board of
                      Directors deems in good faith to reflect fair value.
    
 
                      All foreign securities are valued at the latest quoted
                      sales price available before the time when assets are
                      valued. Securities listed on a foreign exchange, as well
                      as American Depository Receipts ("ADRs"), which are traded
                      on U.S. exchanges are valued at the latest quoted sales
                      price available before the time when assets are valued.
                      Securities regularly traded in the over-the-counter market
                      for which market quotations are readily available will be
                      valued at the latest quoted bid price.
 
   
                      For purposes of determining the Portfolios' net asset
                      value per share, all assets and liabilities, initially
                      expressed in foreign currencies, will be translated into
                      U.S. dollars at the bid prices of such currencies, against
                      U.S. dollars invested by major banks as of 4:00 p.m.
                      London time. If such quotations are not available as of
                      the close of the Exchange, the rate of exchange will be
                      determined in accordance with policies established in good
                      faith by the Board of Directors.
    
 
                      The Fund's price per share can be found daily in the
                      mutual fund section of most major newspapers under the
                      heading of The Vanguard Group.
- --------------------------------------------------------------------------------
 
GENERAL
INFORMATION           Vanguard Horizon Fund, Inc. is a Maryland Corporation.
 
                                       27
<PAGE>   30
 
                      The authorized capital stock of the Fund consists of
                      1,000,000,000 shares at the par value of $.001 each. The
                      Board of Directors has the power to designate one or more
                      classes ("Portfolios") of shares of common stock and to
                      classify or reclassify any unissued shares with respect to
                      such Portfolios. Currently the Fund is offering four
                      classes of shares.
 
                      Annual meetings of shareholders will not be held except as
                      required by the Investment Company Act of 1940 and other
                      applicable law. An annual meeting will be held to vote on
                      the removal of a Director or Directors of the Fund if
                      requested in writing by the holders of not less than 10%
                      of the Fund.
 
                      The shares of the Funds are fully paid and nonassessable;
                      have no preferences as to conversion, exchange, dividends,
                      retirement or other features; and have no preemptive
                      rights. Such shares have noncumulative voting rights,
                      meaning that the holders of more than 50% of the shares
                      voting for the election of Directors can elect 100% of the
                      Directors if they so choose.
 
   
                      All securities and cash are held for the Aggressive Growth
                      and Capital Opportunity Portfolios by Morgan Guaranty
                      Trust Company, New York, N.Y. For the Global Asset
                      Allocation and Global Equity Portfolios all securities and
                      cash are held by Morgan Stanley Trust Company, New York,
                      N.Y. The Vanguard Group, Inc., Valley Forge, PA, serves as
                      the Fund's Transfer and Dividend Disbursing Agent. Price
                      Waterhouse LLP serves as independent accountants for the
                      Fund and audits its financial statements annually. The
                      Fund is not involved in any litigation.
    
- --------------------------------------------------------------------------------
 
                                       28
<PAGE>   31
 
                               SHAREHOLDER GUIDE
 
OPENING AN
ACCOUNT AND
PURCHASING
SHARES                You may open a regular (non-retirement) account, either by
                      mail or wire. Simply complete and return an Account
                      Registration Form and any required legal documentation,
                      indicating the amount you wish to invest. Your purchase
                      must be equal to or greater than the $3,000 minimum
                      initial investment requirement ($500 for Uniform
                      Gifts/Transfers to Minors Act accounts). You must open a
                      new Individual Retirement Account by mail (IRAs may not be
                      opened by wire) using a Vanguard IRA Adoption Agreement.
                      Your purchase must be equal to or greater than the $500
                      minimum initial investment requirement, but no more than
                      $2,000 if you are making a regular IRA contribution.
                      Rollover contributions are generally limited to the amount
                      withdrawn within the past 60 days from an IRA or other
                      qualified Retirement Plan. If you need assistance with the
                      forms or have any questions about this Fund, please call
                      our Investor Information Department at 1-800-662-7447.
                      NOTE: For other types of account registrations (e.g.,
                      corporations, associations, other organizations, trusts or
                      powers of attorney), please call us to determine which
                      additional forms you may need.
 
                      Because of the risks associated with common stock
                      investments, the Fund is intended to be a long-term
                      investment vehicle and is not designed to provide
                      investors with a means of speculating on short-term stock
                      market movements. Consequently the Fund reserves the right
                      to reject any specific purchase (and exchange purchase)
                      request. The Fund also reserves the right to suspend the
                      offering of shares for a period of time.
 
                      The Portfolios' shares are purchased at the
                      next-determined net asset value after your investment has
                      been received. The Fund is offered on a no-load basis
                      (i.e., there are no sales commissions or 12b-1 fees).
 
   
IMPORTANT NOTE:
1% REDEMPTION FEE     Potential investors should note that a 1% redemption fee
                      is charged for the Portfolios. This fee, which is paid
                      directly to the Portfolios, applies to redemptions from
                      and exchanges from the Portfolios of shares held for less
                      than 5 years. In the event of an early redemption due to a
                      shareholder's death, all redemption fees will be waived.
                      In order to substantiate the death, a certified copy of
                      the death certificate must be provided. Please see "Fund
                      Expenses" for more information.
    
 
ADDITIONAL
INVESTMENTS           Subsequent investments to regular accounts may be made by
                      mail ($100 minimum), wire ($1,000 minimum), exchange from
                      another Vanguard Fund account, or Vanguard Fund Express.
                      Subsequent investments to Individual Retirement Accounts
                      may be made by mail ($100 minimum) or exchange from
                      another Vanguard Fund Account. In some instances,
                      contributions may be made by wire or Vanguard Fund
                      Express. Please call us for more information on these
                      topics.
- --------------------------------------------------------------------------------
 
                                       29
<PAGE>   32
 
<TABLE>
<S>                       <C>                                    <C>
                                                                 ADDITIONAL INVESTMENTS
                          NEW ACCOUNT                            TO EXISTING ACCOUNTS
PURCHASING BY MAIL        Please include the amount of your      ADDITIONAL INVESTMENTS SHOULD IN-
                          initial investment on the              CLUDE THE INVEST-BY-MAIL
Complete and sign the     registration form, make your check     REMITTANCE FORM ATTACHED TO YOUR
enclosed Account          payable to The Vanguard                FUND CONFIRMATION STATEMENTS.
Registration Form         Group -- (Portfolio Number) (see       PLEASE MAKE YOUR CHECK PAYABLE TO
                          below for the appropriate              The Vanguard Group -- (Portfolio
                          Portfolio number), and mail to:        Number) (see below for the
                                                                 appropriate Portfolio number),
                          VANGUARD FINANCIAL CENTER              write your account number on your
                          P.O. BOX 2600                          check and, using the return envel-
                          VALLEY FORGE, PA 19482                 ope provided, mail to the address
                                                                 indicated on the Invest-by-Mail
                                                                 Form.
For express or            VANGUARD FINANCIAL CENTER              All written requests should be
registered mail,          455 DEVON PARK DRIVE                   mailed to one of the addresses
send to:                  WAYNE, PA 19087                        indicated for new accounts. Do not
                                                                 send registered or express mail to
                                                                 the post office box address.
</TABLE>
 
   
                                  VANGUARD HORIZON FUND PORTFOLIO NUMBERS
                                  Aggressive Growth Portfolio -- --
                                  Capital Opportunity Portfolio -- --
                                  Global Asset Allocation Portfolio -- --
                                  Global Equity Portfolio -- --
    
- --------------------------------------------------------------------------------
 
PURCHASING BY WIRE
Money should be
wired to:
BEFORE WIRING
Please contact
Client Services
(1-800-662-2739)                  CORESTATES BANK, N.A.
                                  AB 031000011
                                  CORESTATES NO. 01019897
                                  ATTN. VANGUARD
                                  VANGUARD HORIZON FUND
                                  ACCOUNT NUMBER
                                  ACCOUNT REGISTRATION
 
                      You should notify our Client Services Department of your
                      intended wire purchase, including the federal wire number
                      to be used, by 12:00 noon (Eastern Time).
 
                      To assure proper receipt, please be sure your bank
                      includes the name(s) of the Portfolio(s) selected, the
                      account number Vanguard has assigned to you and the eight
                      digit CoreStates number. If you are opening a new account,
                      please complete the Account Registration Form and mail it
                      to the "New Account" address above after completing your
                      wire arrangement. NOTE: Federal Funds wire purchase orders
                      will be accepted only when the Fund and Custodian Bank are
                      open for business.
- --------------------------------------------------------------------------------
 
PURCHASING BY
EXCHANGE (from a
Vanguard Account)     You may open a new account or purchase additional shares
                      by making an exchange from an existing Vanguard account.
                      However, the Fund reserves the right to refuse any
                      exchange purchase request. Call our Client Services
                      Depart-
 
                                       30
<PAGE>   33
 
                      ment (1-800-662-2739) for assistance. The new account
                      will have the same registration as the existing account.
- --------------------------------------------------------------------------------
                    
PURCHASING BY         The Fund Express Special Purchase option lets you move
FUND EXPRESS          money from your bank account to your Vanguard account on
                      an "as needed" basis. Or if you choose the Automatic
Special Purchase and  Investment option, money will be moved automatically from
Automatic Investment  your bank account to your Vanguard account on the schedule
                      (monthly, bimonthly [every other month], quarterly or
                      yearly) you select. To establish these Fund Express
                      options, please provide the appropriate information on the
                      Account Registration Form. We will send you a confirmation
                      of your Fund Express service; please wait three weeks
                      before using the service.

- --------------------------------------------------------------------------------
               
CHOOSING A            You must select one of three distribution options:
DISTRIBUTION   
OPTION                1. AUTOMATIC REINVESTMENT OPTION -- Both dividends and
                         capital gains distributions will be reinvested in
                         additional Portfolio shares. This option will be
                         selected for you automatically unless you specify one
                         of the other options.
 
                      2. CASH DIVIDEND OPTION -- Your dividends will be paid in
                         cash and your capital gains will be reinvested in
                         additional Portfolio shares.
 
                      3. ALL CASH OPTION -- Both dividend and capital gains
                         distributions will be paid in cash.
 
                      You may change your option by calling our Client Services
                      Department (1-800-662-2739).
 
                      In addition, an option to invest your cash dividends
                      and/or capital gains distributions in another Vanguard
                      Fund account is available. Please call our Client
                      Services Department (1-800-662-2739) for information. You
                      may also elect Vanguard Dividend Express which allows you
                      to transfer your cash dividends and/or capital gains
                      distributions automatically to your bank account. Please
                      see "Other Vanguard Services" for more information.

- --------------------------------------------------------------------------------
 
TAX CAUTION           Under Federal tax laws, the Fund is required to distribute
                      net capital gains and dividend income to Portfolio
INVESTORS SHOULD ASK  shareholders. These distributions are made to all
ABOUT THE TIMING OF   shareholders who own Portfolio shares as of the
CAPITAL GAINS AND     distribution's record date, regardless of how long the
DIVIDEND              shares have been owned. Purchasing shares just prior to
DISTRIBUTIONS         the record date could have a significant impact on your
BEFORE INVESTING      tax liability for the year. For example, if you purchase
                      shares immediately prior to the record date of a sizable
                      capital gain or income dividend distribution, you will be
                      assessed taxes on the amount of the capital gain and/or
                      dividend distribution later paid even though you owned the
                      Portfolio shares for just a short period of time. (Taxes
                      are due on the distributions even if the dividend or gain
                      is reinvested in additional Portfolio shares.) While the
                      total value of your investment will be the same after the
                      distribution -- the amount of the distribution will offset
                      the drop in the net asset value of the shares -- you
                      should be aware of the tax implications that the timing of
                      your purchase may have.
 
                                       31
<PAGE>   34
 
   
                      Prospective investors should, therefore, inquire about
                      potential distributions before investing. The Fund's
                      annual capital gains distribution normally occurs in
                      December, while dividends are generally paid semi-annually
                      for the Global Asset Allocation Portfolio in --; and
                      annually in -- for the Aggressive Growth Capital
                      Opportunity and Global Equity Portfolios. For additional
                      information on distributions and taxes, see the section
                      entitled "Dividends, Capital Gains and Taxes."
    
- --------------------------------------------------------------------------------
 
IMPORTANT
ACCOUNT
INFORMATION
OPTIONAL SERVICES     The easiest way to establish optional Vanguard services
                      on your account is to select the options you desire when
                      you complete your Account Registration Form. If you wish
                      to establish additional shareholder options for your
                      account at a later date, you may need to provide Vanguard
                      with additional information and a signature guarantee.
                      Please call our Client Services Department
                      (1-800-662-2739) for further assistance.
 
SIGNATURE
GUARANTEES            For our mutual protection, we may require a signature
                      guarantee on certain written transaction requests. A
                      signature guarantee verifies the authenticity of your
                      signature and may be obtained from banks, brokers and any
                      other guarantor that Vanguard deems acceptable. A
                      SIGNATURE GUARANTEE CANNOT BE PROVIDED BY A NOTARY PUBLIC.
 
CERTIFICATES
                      Share certificates will not be available for the Fund.
 
BROKER/DEALER
PURCHASES
                      If you purchase shares in Vanguard Funds through a
                      registered broker-dealer or investment adviser, the
                      broker-dealer or adviser may charge a service fee.
 
CANCELING TRADES      The Fund will not cancel any trade (e.g., purchase,
                      redemption or exchange) believed to be authentic, received
                      in writing or by telephone, once the trade request has
                      been received.
- --------------------------------------------------------------------------------
 
   
ELECTRONIC
PROSPECTUS
DELIVERY
                      If you would prefer to receive a prospectus for the Fund
                      or any of the Vanguard Funds in an electronic format,
                      please call 1-800-231-7870 for additional information. If
                      you elect to do so, you may also receive a paper copy of
                      the prospectus, by calling 1-800-662-7447.
    
- --------------------------------------------------------------------------------
 
WHEN YOUR
ACCOUNT WILL
BE CREDITED           Your Trade Date is the date on which your account is
                      credited. If your purchase is made by check, Federal Funds
                      wire, or exchange, and is received by the regular close of
                      the New York Stock Exchange (generally 4:00 p.m. Eastern
                      time), your trade date is the day of receipt. If your
                      purchase is received after the close of the Exchange, your
                      trade date is the next business day. Your shares are
                      purchased at the net asset value determined on your trade
                      date. Vanguard will not accept third-party checks to open
                      an account. Please be sure your purchase check is made
                      payable to the Vanguard Group.
 
                      In order to prevent lengthy processing delays caused by
                      the clearing of foreign checks, Vanguard will only accept
                      a foreign check which has been drawn in U.S. dollars and
                      has been issued by a foreign bank with a U.S.
                      correspondent bank. The name of the U.S. correspondent
                      bank must be printed on the face of the foreign check.
- --------------------------------------------------------------------------------
 
                                       32
<PAGE>   35
 
SELLING YOUR
SHARES                You may withdraw any portion of the funds in your account
                      by redeeming shares at any time (see "Important Redemption
                      Information"). You may initiate a request by writing or by
                      telephoning. Your redemption proceeds are normally mailed
                      within two business days after the receipt of the request
                      in Good Order.
 
   
                      IMPORTANT NOTE: For investors in the Fund, a redemption
                      fee equaling 1% of the value of the shares redeemed will
                      be deducted from the redemption proceeds if shares held
                      for less than 5 years are redeemed. This fee is paid
                      directly to the Portfolio.
    
 
SELLING BY MAIL
                      Requests should be mailed to VANGUARD FINANCIAL CENTER,
                      VANGUARD HORIZON FUND, P.O. BOX 1120, VALLEY FORGE, PA
                      19482. (For express or registered mail, send your request
                      to Vanguard Financial Center, Vanguard Horizon Fund, 455
                      Devon Park Drive, Wayne, PA 19087.)
 
                      The redemption price of shares will be the Fund's net
                      asset value next determined after Vanguard has received
                      all required documents in Good Order.
- --------------------------------------------------------------------------------
 
DEFINITION OF
GOOD ORDER
                      GOOD ORDER means that the request includes the following:
 
                      1. The account number and Portfolio name.
                      2. The amount of the transaction (specified in dollars or
                      shares).
                      3. Signatures of all owners EXACTLY as they are registered
                         on the account.
                      4. Any required signature guarantees.
                      5. Other supporting legal documentation that might be
                         required in the case of estates, corporations, trusts,
                         and certain other accounts.
 
                      IF YOU HAVE QUESTIONS ABOUT THIS DEFINITION AS IT PERTAINS
                      TO YOUR REQUEST, PLEASE CALL OUR CLIENT SERVICES
                      DEPARTMENT AT 1-800-662-2739.
- --------------------------------------------------------------------------------
 
SELLING BY
TELEPHONE
                      To sell shares by telephone, you or your pre-authorized
                      representative may call our Client Services Department at
                      1-800-662-2739. The proceeds will be sent to you by mail.
                      Please see "Important Information About Telephone
                      Transactions."
- --------------------------------------------------------------------------------
 
SELLING BY FUND
EXPRESS
Automatic Withdrawal
& Special Redemption  If you select the Fund Express Automatic Withdrawal
                      option, money will be automatically moved from your
                      Vanguard Fund account to your bank account according to
                      the schedule you have selected. The Special Redemption
                      option lets you move money from your Vanguard account to
                      your bank account on an "as needed" basis. To establish
                      these Fund Express options, please provide the
                      appropriate information on the Account Registration Form.
                      We will send you a confirmation of your Fund Express
                      service; please wait three weeks before using the
                      service. The redemption fee described on pages 20 and 23
                      applies to redemption by Fund Express.
- --------------------------------------------------------------------------------
 
SELLING BY EXCHANGE   You may sell shares of the Fund by making an exchange into
                      another Vanguard Fund account. Exchanges to or from the
                      following funds may only be made by mail: VANGUARD
                      BALANCED INDEX FUND, VANGUARD INDEX TRUST, VANGUARD
                      INTERNATIONAL EQUITY INDEX FUND AND VANGUARD QUANTITATIVE
                      PORTFOLIOS. Please see "Exchanging
 
                                       33
<PAGE>   36
 
                      Your Shares" for details. The redemption fee described on
                      pages 20 and 23 applies to exchange redemptions.

                      ----------------------------------------------------------
             
IMPORTANT             Shares purchased by check or Fund Express may be redeemed
REDEMPTION            at any time. However, your redemption proceeds will be
INFORMATION           held at Vanguard until payment for the purchase is
                      collected, which may take up to ten calendar days.
 
DELIVERY OF           Redemption requests received by telephone prior to the
REDEMPTION            regular close of the New York Stock Exchange (generally
PROCEEDS              4:00 p.m. Eastern time), are processed on the day of
                      receipt and the redemption proceeds are normally sent on
                      the following business day.
 
                      Redemption requests received by telephone after the close
                      of the Exchange are processed on the business day
                      following receipt and the proceeds are normally sent on
                      the second business day following receipt.
 
                      All unpaid dividend and capital gains distributions
                      credited to your account up to the date of redemption will
                      be included in the redemption check. Redemption proceeds
                      must be sent to you within seven days of receipt of your
                      request in Good Order.
 
                      If you experience difficulty in making a telephone
                      redemption during periods of drastic economic or market
                      changes, your redemption request may be made by regular or
                      express mail. It will be implemented at the net asset
                      value next determined after your request has been received
                      by Vanguard in Good Order. The Fund reserves the right to
                      revise or terminate the telephone redemption privilege at
                      any time.
 
                      The Fund may suspend the redemption right to postpone
                      payments at times when the New York Stock Exchange is
                      closed, or under any emergency circumstances as determined
                      by the United States Securities and Exchange Commission.
 
                      If the Board of Directors determines that it would be
                      detrimental to the best interests of the Fund's remaining
                      shareholders to make payment in cash, the Fund may pay
                      redemption proceeds in whole or in part by a distribution
                      in kind of readily marketable securities.

                      ----------------------------------------------------------
                   
VANGUARD'S AVERAGE    If you make a redemption from a qualifying account,
COST STATEMENT        Vanguard will send you an Average Cost Statement which
                      provides you with the tax basis of the shares you
                      redeemed. Please see "Other Vanguard Services" for
                      additional information.

                      ----------------------------------------------------------
                    
MINIMUM ACCOUNT       Due to the relatively high cost of maintaining smaller
BALANCE REQUIREMENT   accounts, the Fund reserves the right to redeem shares in
                      any account that is below the minimum initial investment
                      amount of $3,000. If at any time your total investment
                      does not have a value of at least $3,000, you may be
                      notified that your account is below the Fund's minimum
                      account balance requirement. You would then be allowed 60
                      days to make an additional investment before the account
                      is liquidated. Proceeds would be promptly paid to the
                      registered shareholder. (This minimum does not apply to
                      IRAs, other retirement accounts, and Uniform
                      Gifts/Transfers to Minors Act accounts.)
 
                                       34
<PAGE>   37
 
                      The Fund's minimum account balance requirement will not
                      apply if your account falls below $3,000 solely as a
                      result of declining markets (i.e., a decline in a
                      Portfolio's net asset value).
- --------------------------------------------------------------------------------
 
EXCHANGING
YOUR SHARES           Should your investment goals change, you may exchange your
                      shares of Vanguard Horizon Fund for those of other
                      available Vanguard Funds.
 
   
                      IMPORTANT NOTE: For investors in the Fund, a redemption
                      fee amounting to 1% of the value of the shares exchanged
                      will be deducted from the exchange proceeds if shares held
                      for less than 5 years are exchanged. This fee is paid
                      directly to the Portfolio.
    
 
EXCHANGE BY
TELEPHONE
Call Client Services
(1-800-662-2739)      When exchanging shares by telephone, please have ready the
                      Fund name, account number, Social Security number or
                      Employer Identification number listed on the account and
                      exact name and address in which the account is registered.
                      Only the registered shareholder may complete such an
                      exchange. Requests for telephone exchanges received prior
                      to the close of trading on the New York Stock Exchange
                      (generally 4:00 p.m. Eastern time) are processed at the
                      close of business that same day. Requests received after
                      the close of the Exchange are processed the next business
                      day. TELEPHONE EXCHANGES ARE NOT ACCEPTED INTO OR FROM
                      VANGUARD BALANCED INDEX FUND, VANGUARD INDEX TRUST,
                      VANGUARD INTERNATIONAL EQUITY INDEX FUND AND VANGUARD
                      QUANTITATIVE PORTFOLIOS. If you experience difficulty in
                      making a telephone exchange, your exchange request may be
                      made by regular or express mail, and it will be
                      implemented at the closing net asset value on the date
                      received by Vanguard provided the request is received in
                      Good Order.
- --------------------------------------------------------------------------------
 
EXCHANGING BY MAIL    Please be sure to include on your exchange request the
                      name and account number of your current Fund, and the name
                      of the Fund you wish to exchange into, the amount you wish
                      to exchange, and the signatures of all registered account
                      holders. Send your request to VANGUARD FINANCIAL CENTER,
                      VANGUARD HORIZON FUND, P.O. BOX 1120, VALLEY FORGE, PA
                      19482. (For express or registered mail, send your requests
                      to Vanguard Financial Center, Vanguard Horizon Fund, 455
                      Devon Park Drive, Wayne, PA 19087.)
- --------------------------------------------------------------------------------
 
IMPORTANT EXCHANGE
INFORMATION
                      Before you make an exchange, you should consider the
                      following:
 
                      - Please read the Fund's prospectus before making an
                        exchange. For a copy of the prospectus and for answers
                        to any questions you may have, call our Investor
                        Information Department (1-800-662-7447).
                      - An exchange is treated as a redemption from one fund and
                        a purchase into another. Therefore, you could realize a
                        taxable gain or loss on the transaction.
                      - Exchanges are accepted only if the registrations and the
                        Taxpayer Identification numbers of the two accounts are
                        identical.
   
                      - New accounts are not currently accepted in
                        Vanguard/Windsor Fund or Vanguard/PRIMECAP Fund.
    
                      - The shares to be exchanged must be on deposit and not
                        held in certificate form.
                      - The redemption fee described on pages 20 and 23 applies
                        to exchange redemptions.
 
                                       35
<PAGE>   38
 
                      Every effort will be made to maintain the exchange
                      privilege. However, the Fund reserves the right to revise
                      or terminate its provisions, limit the amount of or reject
                      any exchange, as deemed necessary, at any time.
 
                      The exchange privilege is only available in states in
                      which the shares of the Fund are registered for sale. The
                      Fund's shares are currently registered for sale in all 50
                      states and the Fund intends to maintain such registration.

- --------------------------------------------------------------------------------
               
EXCHANGE              The Fund's exchange privilege is not intended to afford
PRIVILEGE             shareholders a way to speculate on short-term movements in
LIMITATIONS           the market. Accordingly, in order to prevent excessive use
                      of the exchange privilege that may potentially disrupt the
                      management of the Fund and increase transaction costs, the
                      Fund has established a policy of limiting excessive
                      exchange activity.
 
                      Exchange activity generally will not be deemed excessive
                      if limited to TWO SUBSTANTIVE EXCHANGE REDEMPTIONS (AT
                      LEAST 30 DAYS APART) from the Fund during any twelve
                      month period. Notwithstanding these limitations, the Fund
                      reserves the right to reject any purchase request
                      (including purchases from other Vanguard portfolios) that
                      is reasonably deemed to be disruptive to efficient
                      portfolio management.

- --------------------------------------------------------------------------------
                 
IMPORTANT             The ability to initiate redemptions (except wire
INFORMATION           redemptions) and exchanges by telephone is automatically
ABOUT TELEPHONE       established on your account unless you request in writing
TRANSACTIONS          that telephone transactions on your account not be
                      permitted.
 
                      To protect your account from losses resulting from
                      unauthorized or fraudulent telephone instructions,
                      Vanguard adheres to the following security procedures:
 
                      1. SECURITY CHECK. To request a transaction by telephone,
                         the caller must know (i) the name of the Portfolio;
                         (ii) the 10-digit account number; (iii) the exact name
                         and address used in the registration; and (iv) the
                         Social Security or Employer Identification number
                         listed on the account.
 
                      2. PAYMENT POLICY. The proceeds of any telephone
                         redemption made by mail will be payable to the
                         registered shareowner and mailed to the address of
                         record, only.
 
                      Neither the Fund nor Vanguard will be responsible for the
                      authenticity of transaction instructions received by
                      telephone, provided that reasonable security procedures
                      have been followed. Vanguard believes that the security
                      procedures described above are reasonable, and that if
                      such procedures are followed, you will bear the risk of
                      any losses resulting from unauthorized or fraudulent
                      telephone transactions on your account.

- --------------------------------------------------------------------------------
               
TRANSFERRING          You may transfer the registration of any of your Fund
REGISTRATION          shares to another person by completing a transfer form and
                      sending it to: VANGUARD FINANCIAL CENTER, P.O. BOX 1110,
                      VALLEY FORGE, PA 19482. The request must be in Good Order.
                      BEFORE MAILING YOUR REQUEST, PLEASE CALL OUR CLIENT
                      SERVICES DEPARTMENT (1-800-662-2739) FOR FURTHER
                      INSTRUCTIONS.

- --------------------------------------------------------------------------------
 
                                       36
<PAGE>   39
 
STATEMENTS AND
REPORTS               Vanguard will send you a confirmation statement each time
                      you initiate a transaction in your account (except for
                      checkwriting redemptions from Vanguard money market
                      accounts). You will also receive a comprehensive account
                      statement at the end of each calendar quarter. The
                      fourth-quarter statement will be a year-end statement,
                      listing all transaction activity for the entire calendar
                      year.
 
                      Vanguard's Average Cost Statement provides you with the
                      average cost of shares redeemed from your account, using
                      the average cost single category method. This service is
                      available for most taxable accounts opened since January
                      1, 1986. In general, investors who redeemed shares from a
                      qualifying Vanguard account may expect to receive their
                      Average Cost Statement in February of the following year.
                      Please call our Client Services Department
                      (1-800-662-2739) for information.
 
                      Financial reports on the Fund will be mailed to you
                      semi-annually, according to the Fund's fiscal year-end.
- --------------------------------------------------------------------------------
 
OTHER VANGUARD
SERVICES              For more information about any of these services, please
                      call our Investor Information Department at
                      (1-800-662-7447).
 
VANGUARD DIRECT
DEPOSIT SERVICE
                      With Vanguard's Direct Deposit Service, most U.S.
                      Government checks (including Social Security and military
                      pension checks) and private payroll checks may be
                      automatically deposited into your Vanguard Fund account.
                      Separate brochures and forms are available for direct
                      deposit of U.S. Government and private payroll checks.
 
VANGUARD AUTOMATIC
EXCHANGE SERVICE      Vanguard's Automatic Exchange Service allows you to move
                      money automatically among your Vanguard Fund accounts. For
                      instance, the service can be used to "dollar cost average"
                      from a money market portfolio into a stock or bond fund or
                      to contribute to an IRA or other retirement plan. Please
                      contact our Client Services Department at 1-800-662-2739
                      for additional information.
 
VANGUARD FUND
EXPRESS
                      Vanguard's Fund Express allows you to transfer money
                      between your Fund account and your account at a bank,
                      savings and loan association, or a credit union that is a
                      member of the Automated Clearing House (ACH) system. You
                      may elect this service on the Account Registration Form or
                      call our Investor Information Department (1-800-662-7447)
                      for a Fund Express application.
 
                      The minimum amount that can be transferred by telephone is
                      $100. However, if you have established one of the
                      automatic options, the minimum amount is $50. The maximum
                      amount that can be transferred using any of the options is
                      $100,000.
 
                      Special rules govern how your Fund Express purchases or
                      redemptions are credited to your account. In addition,
                      some services of Fund Express cannot be used with specific
                      Vanguard Funds. For more information please refer to the
                      Vanguard Fund Express brochure.
 
   
VANGUARD DIVIDEND
EXPRESS
                      Vanguard's Dividend Express allows you to transfer your
                      dividend and/or capital gains distribution automatically
                      from your Fund account, one business day after the Fund's
                      payable date, to your account at a bank, savings and loan
                      association, or a credit union that is a member of the
                      Automatic Clearing House (ACH) system. You may elect this
    
 
                                       37
<PAGE>   40
 
                      service on the Account Registration Form or call our
                      Investor Information Department (1-800-662-7447) for a
                      Vanguard Dividend Express application.
               
VANGUARD              Vanguard's Tele-Account is a convenient, automated service
TELE-ACCOUNT          that provides share price, price change and yield
                      quotations on Vanguard Funds through any Touch ToneTM
                      telephone. This service also lets you obtain information
                      on your account balance, last transaction, and your most
                      recent dividend or capital gains payment. To contact
                      Vanguard's Tele-Account service, dial 1-800-ON-BOARD
                      (1-800-662-6273). A brochure offering detailed operating
                      instructions is available from the Investor Information
                      Department (1-800-662-7447).

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                                       38
<PAGE>   41
 
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<PAGE>   42
 
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<PAGE>   43
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[LOGO]                                               [LOGO]
                                                     
- ---------------------------                          [LOGO]                    
THE VANGUARD GROUP                                                             
 OF INVESTMENT                                                                  
 COMPANIES                                                                      
Vanguard Financial Center                                                      
P.O. Box 2600                    
Valley Forge, PA 19482                 P   R   O   S   P   E   C   T   U   S   

INVESTOR INFORMATION                                                           
 DEPARTMENT:                                       MAY --, 1995                
1-800-662-7447 (SHIP)                                                          

CLIENT SERVICES                                                                
 DEPARTMENT:
1-800-662-2739 (CREW)

TELE-ACCOUNT FOR
 24-HOUR ACCESS:
1-800-662-6273 (ON-BOARD)

TELECOMMUNICATIONS SERVICE
 FOR THE HEARING-IMPAIRED:
1-800-662-2738

TRANSFER AGENT:
The Vanguard Group, Inc.
Vanguard Financial Center
Valley Forge, PA 19482

                                                     [LOGO]

P069
- --------------------------------------------------------------------------------
<PAGE>   44
 
                                     PART B
 
                          VANGUARD HORIZON FUND, INC.
 
                      STATEMENT OF ADDITIONAL INFORMATION
 
                                  MAY --, 1995
 
     This Statement is not a prospectus but should be read in conjunction with
the Fund's current Prospectus (dated May --, 1995). To obtain the Prospectus
please call the Investor Information Department:
 
                                 1-800-662-7447
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                            PAGE
                                                                                            ----
<S>                                                                                         <C>
Investment Objectives and Policies........................................................     1
Investment Policies.......................................................................     2
Investment Limitations....................................................................     5
Management of the Fund....................................................................     7
Investment Advisory Services..............................................................     9
Securities Transactions...................................................................    11
Purchase of Shares........................................................................    11
Redemption of Shares......................................................................    11
Comparative Indexes.......................................................................    12
</TABLE>
 
                       INVESTMENT OBJECTIVES AND POLICIES
 
     The following policies supplement the Fund's investment objectives and
policies set forth in the Prospectus.
 
     FOREIGN INVESTMENTS  As indicated in the Prospectus, The Global Equity and
Global Asset Allocation Portfolios will include foreign securities. Investors
should recognize that investing in foreign companies involves certain special
considerations which are not typically associated with investing in U.S.
companies. Since the stocks of foreign companies are frequently denominated in
foreign currencies, and since the Portfolios may temporarily hold uninvested
reserves in bank deposits in foreign currencies, the Portfolio will be affected
favorably or unfavorably by changes in currency rates and in exchange control
regulations, and may incur costs in connection with conversions between various
currencies. The investment policies of each Portfolio permit it to enter into
forward foreign currency exchange contracts in order to hedge the Portfolio's
holdings and commitments against changes in the level of future currency rates.
Such contracts involve an obligation to purchase or sell a specific currency at
a future date at a price set at the time of the contract.
 
     As foreign companies are not generally subject to uniform accounting,
auditing and financial reporting standards and practices comparable to those
applicable to domestic companies, there may be less publicly available
information about certain foreign companies than about domestic companies.
Securities of some foreign companies are generally less liquid and more volatile
than securities of comparable domestic companies. There is generally less
government supervision and regulation of stock exchanges, brokers and listed
companies than in the U.S. In addition, with respect to certain foreign
countries, there is the possibility of expropriation or confiscatory taxation,
political or social instability, or diplomatic developments which could affect
U.S investments in those countries.
 
     Although the Portfolios will endeavor to achieve most favorable execution
costs in their portfolio transactions in foreign securities, fixed commissions
on many foreign stock exchanges are generally higher than negotiated commissions
on U.S. exchanges. In addition, it is expected that the expenses for custodial
 
                                        1
<PAGE>   45
 
arrangements of the Portfolios' foreign securities will be somewhat greater than
the expenses for the custodian arrangements for handling U.S. securities of
equal value.
 
     Certain foreign governments levy withholding taxes against dividend and
interest income. Although in some countries a portion of these taxes is
recoverable, the non-recovered portion of foreign withholding taxes will reduce
the income the Portfolio receives from its foreign investments. However, these
foreign withholding taxes are not expected to have a significant impact on the
Portfolios, since each Portfolio's investment objective is to seek long-term
capital appreciation and any income should be considered incidental.
 
     PORTFOLIO TURNOVER  While the rate of portfolio turnover is not a limiting
factor when management deems changes appropriate, it is anticipated that each
Portfolio's annual portfolio turnover rate will not normally exceed 150%. A
portfolio turnover rate of 100% would occur if all of the Portfolio's
securities, exclusive of U.S. Government securities and other securities whose
maturities at the time of acquisition are one year or less, are replaced in the
period of one year. Turnover rates may vary greatly from year to year as well as
within a particular year and may also be affected by cash requirements for
redemptions of each Portfolio's shares and by requirements which enable the Fund
to receive certain favorable tax treatments. The portfolio turnover rates will,
of course, depend in large part on the level of purchases and redemptions of
shares of each Portfolio. Higher portfolio turnover can result in corresponding
increases in brokerage costs to the Portfolios of the Fund and their
shareholders.
 
                              INVESTMENT POLICIES
 
     FUTURES CONTRACTS  Each Portfolio may enter into futures contracts,
options, and options on futures contracts for several reasons: to maintain cash
reserves while remaining fully invested, to facilitate trading, to reduce
transaction costs, or to seek higher investment returns when a futures contract
is priced more attractively than the underlying equity security or index.
Futures contracts provide for the future sale by one party and purchase by
another party of a specified amount of a specific security at a specified future
time and at a specified price. Futures contracts which are standardized as to
maturity date and underlying financial instrument are traded on national futures
exchanges. Futures exchanges and trading are regulated under the Commodity
Exchange Act by the Commodity Futures Trading Commission ("CFTC"), a U.S.
Government Agency.
 
     Although futures contracts by their terms call for actual delivery or
acceptance of the underlying securities, in most cases the contracts are closed
out before the settlement date without the making or taking of delivery. Closing
out an open futures position is done by taking an opposite position ("buying" a
contract which has previously been "sold," or "selling" a contract previously
purchased) in an identical contract to terminate the position. Brokerage
commissions are incurred when a futures contract is bought or sold.
 
     Futures traders are required to make a good faith margin deposit in cash or
government securities with a broker or custodian to initiate and maintain open
positions in futures contracts. The Fund's margin deposits will be placed in a
segregated account maintained by the Fund's custodian bank. A margin deposit is
intended to assure completion of the contract (delivery or acceptance of the
underlying security) if it is not terminated prior to the specified delivery
date. Minimal initial margin requirements are established by the futures
exchange and may be changed. Brokers may establish deposit requirements which
are higher than the exchange minimums. Futures contracts are customarily
purchased and sold on margin which may range upward from less than 5% of the
value of the contract being traded.
 
     After a futures contract position is opened, the value of the contract is
marked to market daily. If the futures contract price changes to the extent that
the margin on deposit does not satisfy margin requirements, payment of
additional "variation" margin will be required. Conversely, change in the
contract value may reduce the required margin, resulting in a repayment of
excess margin to the contract holder. Variation margin payments are made to and
from the futures broker for as long as the contract remains open. The Fund
expects to earn interest income on its margin deposits.
 
     Traders in futures contracts may be broadly classified as either "hedgers"
or "speculators." Hedgers use the futures markets primarily to offset
unfavorable changes in the value of securities otherwise held for investment
purposes or expected to be acquired by them. Speculators are less inclined to
own the securities
 
                                        2
<PAGE>   46
 
underlying the futures contracts which they trade, and use futures contracts
with the expectation of realizing profits from fluctuations in the prices of
underlying securities.
 
     Regulations of the CFTC applicable to the Fund require that all of its
futures transactions constitute bonafide hedging transactions. A Portfolio will
only sell futures contracts to protect securities it owns against price declines
or purchase contracts to protect against an increase in the price of securities
it intends to purchase. As evidence of this hedging interest, the Fund expects
that approximately 75% of its futures contract purchases will be "completed,"
that is, equivalent amounts of related securities will have been purchased or
are being purchased by a Portfolio upon sale of open futures contracts.
 
     Although techniques other than the sale and purchase of futures contracts
could be used to control a Portfolio's exposure to market fluctuations, the use
of futures contracts may be a more effective means of hedging this exposure.
While a Portfolio will incur commission expenses in both opening and closing out
futures positions, these costs are lower than transaction costs incurred in the
purchase and sale of the underlying securities.
 
     RESTRICTIONS ON THE USE OF FUTURES CONTRACTS  A Portfolio will not enter
into futures contract transactions to the extent that, immediately thereafter,
the sum of its initial margin deposits on open contracts exceeds 5% of the
market value of its total assets. In addition, a Portfolio will not enter into
futures contracts to the extent that its outstanding obligations to purchase
securities under these contracts would exceed 20% of its total assets.
 
     RISK FACTORS IN FUTURES TRANSACTIONS  Positions in futures contracts may be
closed out only on an Exchange which provides a secondary market for such
futures. However, there can be no assurance that a liquid secondary market will
exist for any particular futures contract at any specific time. Thus, it may not
be possible to close a futures position. In the event of adverse price
movements, a Portfolio would continue to be required to make daily cash payments
to maintain its required margin. In such situations, if the Portfolio has
insufficient cash, it may have to sell portfolio securities to meet daily margin
requirements at a time when it may be disadvantageous to do so. In addition, a
Portfolio may be required to make delivery of the instruments underlying futures
contracts it holds. The inability to close options and futures positions also
could have an adverse impact on the ability to effectively hedge.
 
     Each Portfolio will minimize the risk that it will be unable to close out a
futures contract by only entering into futures which are traded on national
futures exchanges and for which there appears to be a liquid secondary market.
 
     The risk of loss in trading futures contracts in some strategies can be
substantial, due both to the low margin deposits required, and the extremely
high degree of leverage involved in futures pricing. As a result, a relatively
small price movement in a futures contract may result in immediate and
substantial loss (as well as gain) to the investor. For example, if at the time
of purchase, 10% of the value of the futures contract is deposited as margin, a
subsequent 10% decrease in the value of the futures contract would result in a
total loss of the margin deposit, before any deduction for the transaction
costs, if the account were then closed out. A 15% decrease would result in a
loss equal to 150% of the original margin deposit if the contract were closed
out. Thus, a purchase or sale of a futures contract may result in losses in
excess of the amount invested in the contract. However, because the futures
strategies of the Fund are engaged in only for hedging purposes, the Adviser
does not believe that the Portfolios are subject to the risks of loss frequently
associated with futures transactions. A Portfolio would presumably have
sustained comparable losses if, instead of the futures contract, it had invested
in the underlying financial instrument and sold it after the decline.
 
     Utilization of futures transactions by a Portfolio does involve the risk of
imperfect or no correlation where the securities underlying futures contracts
have different maturities than the portfolio securities being hedged. It is also
possible that a Portfolio could both lose money on futures contracts and also
experience a decline in value of its portfolio securities. There is also the
risk of loss by a Portfolio of margin deposits in the event of bankruptcy of a
broker with whom the Portfolio has an open position in a futures contract or
related option. Additionally, investments in futures contracts and options
involve the risk that the investment advisers will incorrectly predict stock
market and interest rate trends.
 
                                        3
<PAGE>   47
 
     Most futures exchanges limit the amount of fluctuation permitted in futures
contract prices during a single trading day. The daily limit establishes the
maximum amount that the price of a futures contract may vary either up or down
from the previous day's settlement price at the end of a trading session. Once
the daily limit has been reached in a particular type of contract, no trades may
be made on that day at a price beyond that limit. The daily limit governs only
price movement during a particular trading day and therefore does not limit
potential losses, because the limit may prevent the liquidation of unfavorable
positions. Futures contract prices have occasionally moved to the daily limit
for several consecutive trading days with little or no trading, thereby
preventing prompt liquidation of future positions and subjecting some futures
traders to substantial losses.
 
     FEDERAL TAX TREATMENT OF FUTURES CONTRACTS  Except for transactions the
Fund has identified as hedging transactions, each Portfolio is required for
Federal income tax purposes to recognize as income for each taxable year its net
unrealized gains and losses on certain futures contracts as of the end of the
year as well as those actually realized during the year. In most cases, any gain
or loss recognized with respect to a futures contract is considered to be 60%
long-term capital gain or loss and 40% short-term capital gain or loss, without
regard to the holding period of the contract. Furthermore, sales of futures
contracts which are intended to hedge against a change in the value of
securities held by a Portfolio may affect the holding period of such securities
and, consequently, the nature of the gain or loss on such securities upon
disposition.
 
     In order for a Portfolio to continue to qualify for Federal income tax
treatment as a regulated investment company, at least 90% of its gross income
for a taxable year must be derived from qualifying income; i.e., dividends,
interest, income derived from loans of securities, gains from the sale of
securities or foreign currencies or other income derived with respect to the
Fund's business of investing in securities. In addition, gains realized on the
sale or other disposition of securities held for less than three months must be
limited to less than 30% of the Portfolio's annual gross income. It is
anticipated that any net gain realized from the closing out of futures contracts
will be considered gain from the sale of securities and therefore be qualifying
income for purposes of the 90% requirement. In order to avoid realizing
excessive gains on securities held less than three months, the Portfolio may be
required to defer the closing out of futures contracts beyond the time when it
would otherwise be advantageous to do so. It is anticipated that unrealized
gains on futures contracts, which have been open for less than three months as
of the end of the Portfolio's fiscal year and which are recognized for tax
purposes, will not be considered gains on sales of securities held less than
three months for the purpose of the 30% test.
 
     A Portfolio will distribute to shareholders annually any net capital gains
which have been recognized for Federal income tax purposes (including unrealized
gains at the end of the Fund's fiscal year) on futures transactions. Such
distributions will be combined with distributions of capital gains realized on
the Portfolio's other investments and shareholders will be advised on the nature
of the transactions.
 
     REPURCHASE AGREEMENTS  Each Portfolio may invest in repurchase agreements
with commercial banks, brokers or dealers either for defensive purposes due to
market conditions or to generate income from its excess cash balances. A
repurchase agreement is an agreement under which the Fund acquires a money
market instrument (generally a security issued by the U.S Government or an
agency thereof, a banker's acceptance or a certificate of deposit) from a
commercial bank, broker or dealer, subject to resale to the seller at an agreed
upon price and date (normally, the next business day). A repurchase agreement
may be considered a loan collateralized by securities. The resale price reflects
an agreed upon interest rate effective for the period the instrument is held by
the Portfolio and is unrelated to the interest rate on the underlying
instrument. In these transactions, the securities acquired by the Portfolio
(including accrued interest earned thereon) must have a total value in excess of
the value of the repurchase agreement and are held by the Fund's Custodian Bank
until repurchased. In addition, the Fund's Board of Directors will monitor each
Portfolio's repurchase agreement transactions generally and will establish
guidelines and standards for review by the investment adviser of the
creditworthiness of any bank, broker or dealer party to a repurchase agreement
with any Portfolio of the Fund. No more than an aggregate of 15% of a
Portfolio's assets, at the time of investment, will be invested in repurchase
agreements having maturities longer than seven days and securities subject to
legal or contractual restrictions on resale, or for which there are no readily
available market quotations.
 
                                        4
<PAGE>   48
 
     The use of repurchase agreements involves certain risks. For example, if
the other party to the agreement defaults on its obligation to repurchase the
underlying security at a time when the value of the security has declined, the
Portfolio may incur a loss upon disposition of the security. If the other party
to the agreement becomes insolvent and subject to liquidation or reorganization
under the Bankruptcy Code or other laws, a court may determine that the
underlying security is collateral for a loan by the Portfolio not within the
control of the Portfolio and therefore the realization by the Portfolio on such
collateral may be automatically stayed. Finally, it is possible that the
Portfolio may not be able to substantiate its interest in the underlying
security and may be deemed an unsecured creditor of the other party to the
agreement. While the Fund's management acknowledges these risks, it is expected
that they can be controlled through careful monitoring procedures.
 
     LENDING OF SECURITIES  Each Portfolio may lend its securities on a
short-term basis (less than nine months) to qualified institutional investors
who need to borrow securities in order to complete certain transactions, such as
covering short sales, avoiding failures to deliver securities or completing
arbitrage operations. By lending its securities, the Portfolio will be
attempting to increase its net investment income through the receipt of interest
on the loan. Any gain or loss in the market price of the securities loaned that
might occur during the term of the loan would be for the account of the
Portfolio. Each Portfolio may lend its portfolio securities to qualified
brokers, dealers, banks or other financial institutions, so long as the terms,
the structure and the aggregate amount of such loans are not inconsistent with
the Investment Company Act of 1940, or the Rules and Regulations or
interpretations of the Securities and Exchange Commission (the "Commission")
thereunder, which currently require that (a) the borrower pledge and maintain
with the Fund collateral consisting of cash, an irrevocable letter of credit or
securities issued or guaranteed by the United States Government having a value
at all times not less than 100% of the value of the securities loaned, (b) the
borrower add to such collateral whenever the price of the securities loaned
rises (i.e., the borrower "marks to the market" on a daily basis), (c) the loan
be made subject to termination by the Portfolio at any time and (d) the
Portfolio receives reasonable interest on the loan which may include the
Portfolio's investing any cash collateral in interest bearing short-term
investments, any distribution on the loaned securities and any increase in their
market value. A Portfolio will not be required to pay any service, placement or
other fee in connection with such loans, and will retain voting rights to the
loaned securities. A Portfolio will not lend its portfolio securities, if as a
result, the aggregate value of such loans exceeds 33 1/3% of the value of the
Portfolio's total assets. Loan arrangements made by a Portfolio will comply with
all other applicable regulatory requirements, including the rules of the New
York Stock Exchange, which rules presently require the borrower, after notice,
to redeliver the securities within the normal settlement time of five business
days. All relevant facts and circumstances, including the credit-worthiness of
the broker, dealer or institution, will be considered in making decisions with
respect to the lending of securities, subject to review by the Fund's Board of
Directors.
 
     At the present time, the Staff of the Commission does not object if an
investment company pays reasonable negotiated fees in connection with loaned
securities, so long as such fees are set forth in a written contract and
approved by the investment company's Directors (Trustees). In addition, voting
rights may pass with the loaned securities, but if a material event will occur
affecting an investment on loan, the loan must be called and the securities
voted.
 
                             INVESTMENT LIMITATIONS
 
     The following policies supplement the Fund's investment limitations set
forth in the Prospectus. It is a fundamental policy of each Portfolio not to
engage in any of the following activities or business practices. These
restrictions may not be changed with respect to a particular Portfolio without
the approval of a majority of the outstanding shares (as defined in the
Investment Company Act of 1940) of that Portfolio. A Portfolio may not:
 
      1) Issue senior securities;
 
      2) Borrow money, except from banks (or through reverse repurchase
         agreements), for temporary or emergency (not leveraging) purposes,
         including the meeting of redemption requests which might otherwise
         require the untimely disposition of securities, in an amount not in
         excess of 15% of the
 
                                        5
<PAGE>   49
 
         value of the net assets of the Portfolio (including the amount borrowed
         and the value of any outstanding reverse repurchase agreements) at the
         time the borrowing is made. Whenever borrowings exceed 5% of the value
         of the net assets of the Portfolio, the Portfolio will not make any
         additional investments;
 
      3) With respect to 75% of the value of its total assets, purchase the
         securities of any issuer (except obligations of the United States
         government and its instrumentalities) if as a result the Portfolio
         would hold more than 10% of the outstanding voting securities of the
         issuer, or more than 5% of the value of the Portfolio's total assets
         would be invested in the securities of such issuer;
 
      4) Engage in the business of underwriting securities issued by others,
         except to the extent that the Portfolio may technically be deemed to be
         an underwriter under the Securities Act of 1933, as amended, in
         disposing of portfolio securities;
 
      5) Purchase or otherwise acquire any security if, as a result, more than
         15% of its net assets would be invested in securities that are illiquid
         (including the Fund's investment in The Vanguard Group, Inc., as
         described on page 7);
 
      6) Make loans except (i) by purchasing bonds, debentures or similar
         obligations (including repurchase agreements, subject to the limitation
         described in (5) above) which are either publicly distributed or
         customarily purchased by institutional investors, and (ii) by lending
         its securities to banks, brokers, dealers and other financial
         institutions so long as such loans are not inconsistent with the
         Investment Company Act or the Rules and Regulations or interpretations
         of the Commission thereunder and the aggregate value of all securities
         loaned does not exceed 33 1/3% of the market value of the Portfolio's
         total assets;
 
      7) Pledge, mortgage, or hypothecate its assets, except to secure
         borrowings permitted by limitation (2) above;
 
      8) Buy any securities or other property on margin (except for such
         short-term credits as are necessary for the clearance of transactions),
         or engage in short sales (unless by virtue of its ownership of other
         securities it has a right to obtain at no added cost securities
         equivalent in kind and amount to the securities sold) except as set
         forth below in (12);
 
      9) Purchase or sell puts or calls, or combinations thereof; provided
         however, that a Portfolio may enter into forward foreign currency
         exchange transactions except as set forth below in (12);
 
     10) Purchase or sell real estate or real estate limited partnerships
         (although it may purchase securities secured by real estate interests
         or interests therein, or issued by companies or investment trusts which
         invest in real estate or interests therein);
 
     11) The Fund will not invest in securities of other investment companies,
         except as may be acquired as a part of a merger, consolidation or
         acquisition of assets approved by the Fund's shareholders or otherwise
         to the extent permitted by Section 12 of the Investment Company Act of
         1940. The Fund will invest only in investment companies which have
         investment objectives and investment policies consistent with those of
         the Fund;
 
     12) Purchase or sell commodities or commodity contracts; provided, however,
         that a Portfolio may enter into forward foreign currency exchange
         transactions and that each Portfolio may invest in futures contracts
         and options to the extent that not more than 5% of the Portfolio's
         assets are required as deposit to secure obligations under futures
         contracts, additionally each Portfolio will invest no more than 15% of
         its assets in swap agreements;
 
     13) Invest in companies for the purpose of exercising control of
         management; and
 
     14) Invest more than 25% of its assets in any single industry.
 
     Notwithstanding these limitations, the Fund may own all or any portion of
the securities of, make loans to, or contribute to the costs or other financial
requirements of, any company which will be wholly owned by
 
                                        6
<PAGE>   50
 
the Fund and one or more other investment companies and is primarily engaged in
the business of providing at cost services, such as management, administrative,
distribution or other related services to the Fund and other investment
companies. (See "Management of the Fund").
 
     In order to permit the sale of shares of the Fund in certain states, the
Fund may make commitments more restrictive than the fundamental or
non-fundamental operating restrictions described above. Should the Fund
determine that any such commitment is no longer in the best interests of the
Fund and its shareholders it will revoke the commitment by terminating sales of
its shares in the state(s) involved.
 
     The above-mentioned investment limitations are considered at the time
investment securities are purchased.
 
                             MANAGEMENT OF THE FUND
 
     THE VANGUARD GROUP  The Fund is a member of The Vanguard Group of
Investment Companies which consists of more than 30 investment companies.
Through their jointly-owned subsidiary, The Vanguard Group, Inc. ("Vanguard"),
the Vanguard Funds obtain at cost virtually all of their corporate management,
administrative and distribution services. Vanguard also provides investment
advisory services on an at-cost basis to certain of the Vanguard Funds.
 
     Vanguard employs a supporting staff of management personnel needed to
provide the requisite services to the Funds and also furnishes the Funds with
necessary office space, furnishings and equipment. Each Fund pays its share of
Vanguard's net expenses which are allocated among the Funds under procedures
approved by the Directors (Trustees) of each Fund. In addition, each Fund bears
its own direct expenses such as legal, auditing and custodian fees.
 
     The Officers of the Fund and the Vanguard Funds are also Officers and
employees of Vanguard. No Officer or employee is permitted to own any securities
of any external adviser for the Vanguard Funds.
 
     The Vanguard Group adheres to a Code of Ethics established pursuant to Rule
17j-l under the Investment Company Act of 1940. The Code is designed to prevent
unlawful practices in connection with the purchase or sale of securities by
persons associated with Vanguard. Under Vanguard's Code of Ethics certain
officers and employees of Vanguard who are considered access persons are
permitted to engage in personal securities transactions. However, such
transactions are subject to procedures, restrictions and guidelines
substantially similar to those recommended by the mutual fund industry and
approved by the U.S. Securities and Exchange Commission.
 
     The Vanguard Group was established and operates under a Funds' Service
Agreement which was approved by the shareholders of each of the Funds. The
amounts which each of the Funds have invested are adjusted from time to time in
order to maintain the proportionate relationship between each Fund's relative
net assets and its contribution to Vanguard's capital. The Fund's Service
Agreement provides as follows: (a) each Vanguard Fund may invest up to .40% of
its current assets in Vanguard, and (b) there is no other limitation on the
amount that each Vanguard Fund may contribute to Vanguard's capitalization. The
amount contributed to Vanguard by the Fund's Portfolios included the Service
Economy and Technology Portfolios which are no longer in existence.
 
     The Officers of the Fund manage its day-to-day operations and are
responsible to the Fund's Board of Directors. The Directors set broad policies
for each Fund and choose its Officers. The following is a list of the Directors
and Officers of the Funds and a statement of their present positions and
principal occupations during the past five years. The mailing address of the
Directors and Officers of the Fund is Post Office Box 876, Valley Forge, PA
19482.
 
                                        7
<PAGE>   51
 
<TABLE>
<S>                                                <C>
JOHN C. BOGLE, Chairman, Chief                     JOHN C. SAWHILL, Director
Executive Officer and Director*                      President and Chief Executive Officer, The
  Chairman, Chief Executive Officer and              Nature Conservancy; formerly, Director and
  Director of The Vanguard Group, Inc. and of        Senior Partner, McKinsey & Co.; and
  each of the investment companies in The            President, New York University; Director of
  Vanguard Group; Director of The Mead               Pacific Gas and Electric Company and NACCO
  Corporation and General Accident Insurance.        Industries.

JOHN J. BRENNAN, President and Director*           JAMES O. WELCH, JR., Director
  President and Director of The Vanguard             Retired Chairman of Nabisco Brands, Inc.,
  Group, Inc. and of each of the investment          retired Vice Chairman and Director of RJR
  companies in The Vanguard Group.                   Nabisco; Director of TECO Energy, Inc.

ROBERT E. CAWTHORN, Director                       J. LAWRENCE WILSON, Director
  Chairman of Rhone-Poulenc Rorer, Inc.;             Chairman and Chief Executive Officer of Rohm &
  Director of Sun Company, Inc.                      Haas Company; Director of Cummins Energy
                                                     Company, and Trustee of Vanderbilt
BARBARA BARNES HAUPTFUHRER, Director                 University and the Culver Educational
  Director of The Great Atlantic and Pacific         Foundation.
  Tea Company, ALCO Standard Corp., Raytheon
  Company, Knight-Ridder, Inc., Massachusetts      RAYMOND J. KLAPINSKY, Secretary*
  Mutual Life Insurance Co. and Trustee              Senior Vice President and Secretary of The
  Emerita of Wellesley College.                      Vanguard Group, Inc.; Secretary of each of the
                                                     investment companies in The Vanguard Group. 
BRUCE K. MACLAURY, Director                                                                      
  President, The Brookings Institution;            RICHARD F. HYLAND, Treasurer*
  Director of American Express Bank, Ltd., The       Treasurer of The Vanguard Group, Inc. and of
  St. Paul Companies, Inc. and Scott Paper Co.       each of the investment companies in The
                                                     Vanguard Group.
BURTON G. MALKIEL, Director                                         
  Chemical Bank Chairman's Professor of            KAREN E. WEST, Controller*
  Economics, Princeton University; Director of       Vice President of The Vanguard Group, Inc.;
  Prudential Insurance Co. of America, Amdahl        Controller of each of the investment companies
  Corporation, Baker Fentress & Co., The             in The Vanguard Group.
  Jeffrey Co. and Southern New England                                                           
  Communications Company.                          ---------------                               
                                                   *Officers of the Fund are "interested persons"
ALFRED M. RANKIN, JR., Director                    as defined in the Investment Company Act of   
  Chairman, President, and Chief Executive         1940.                                         
  Officer of NACCO Industries, Inc.; Director
  of The BFGoodrich Company, The Standard
  Products Company and The Reliance Electric
  Company.
</TABLE>
 
     MANAGEMENT  Corporate management and administrative services include: (1)
executive staff; (2) accounting and financial; (3) legal and regulatory; (4)
shareholder account maintenance; (5) monitoring and control of custodian
relationships; (6) shareholder reporting; and (7) review and evaluation of
advisory and other services provided to the Vanguard Funds by third parties.
 
     DISTRIBUTION  Vanguard also provides all distribution and marketing
services for the Vanguard Funds. The principal distribution expenses are for
advertising, promotional materials and marketing personnel. Distribution
services may also include organizing and offering to the public, from time to
time, one or more new investment companies which will become members of the
Group. The Directors and Officers of Vanguard determine the amount to be spent
annually on distribution activities, the manner and amount to be spent on each
Fund, and whether to organize new investment companies.
 
     One half of the distribution expenses of a marketing and promotional nature
is allocated among the Vanguard Funds based upon their relative net assets. The
remaining one half of these expenses is allocated among the Vanguard Funds based
upon each Fund's sales for the preceding 24 months relative to the total sales
of the Funds as a Group. Provided, however, that no Fund's aggregate quarterly
rate of contribution for distribution expenses of a marketing and promotional
nature shall exceed 125% of the average distribution expense rate for the Group,
and that no Fund shall incur annual distribution expenses in excess of 20/100 of
1% of its average month-end net assets.
 
     INVESTMENT ADVISORY SERVICES  An experienced investment management staff
employed directly by Vanguard also provides investment advisory services to the
Fund, Vanguard Money Market Reserves, Vanguard Institutional Money Market
Portfolio, Vanguard Municipal Bond Fund, several Portfolios of Vanguard Fixed
Income Securities Fund, Vanguard California Tax-Free Fund, Vanguard Florida
Insured Tax-Free Fund, Vanguard New Jersey Tax-Free Fund, Vanguard New York
Insured Tax-Free Fund, Vanguard Ohio Tax-Free Fund, Vanguard
 
                                        8
<PAGE>   52
 
Pennsylvania Tax-Free Fund, Vanguard Admiral Funds, Vanguard Bond Index Fund,
Vanguard Balanced Index Fund, Vanguard Index Trust, Vanguard International
Equity Index Fund, Vanguard Tax-Managed Fund, Vanguard Institutional Index Fund,
several Portfolios of Vanguard Variable Insurance Fund, a portion of
Vanguard/Windsor II, a portion of Vanguard/Morgan Growth Fund as well as several
indexed separate accounts. The compensation and other expenses of this staff are
paid by the Portfolios and Funds utilizing these services.
 
     REMUNERATION OF DIRECTORS AND OFFICERS  The Fund will pay each Director who
is not also an Officer, an annual fee plus travel and other expenses incurred in
attending Board meetings. Directors who are also Officers receive no
remuneration for their services as Directors. The Fund's Officers and employees
are paid by Vanguard which, in turn, is reimbursed by the Fund, and each other
Fund in the Group, for its proportionate share of Officers' and employees'
salaries and retirement benefits.
 
     Under its retirement plan, Vanguard contributes annually an amount equal to
10% of each Officer's annual compensation plus 5.7% of that part of an eligible
Officer's compensation during the year, if any, that exceeds the Social Security
Taxable Wage Base then in effect. Under its Thrift Plan, all employees of
Vanguard are permitted to make pre-tax basic contributions in a maximum amount
equal to 4% of total compensation. Vanguard matches the basic contributions on a
100% basis.
 
     DIRECTORS' RETIREMENT FEES  A Retirement Plan for Directors has been
implemented to provide a fee to retired Directors equal to $1,000 per year of
service on the Board, up to 15 years of service. This fee will remain in place
subsequent to the Director's retirement for a period of 10 years or until a
retired Director's death.
 
                          INVESTMENT ADVISORY SERVICES
 
     INVESTMENT ADVISORY AGREEMENT WITH BARING INTERNATIONAL INVESTMENT
LIMITED.  The Global Equity Portfolio is managed by Baring International
Investment Limited, a wholly-owned subsidiary of Baring Asset Management
Limited, 155 Bishopsgate, London. Baring Asset Management was founded in 1762
and provides asset management services to companies, institutions, and
individuals. As of September 30, 1994, Baring Asset Management has over $44
billion in assets under management, and over 100 investment professionals in
offices throughout the world.
 
     The investment philosophy at Baring International Investment is that
investing in growing economies and growing companies at the right valuation
leads to superior long-term results. Baring International Investment utilizes a
regional strategic team approach to portfolio management, where each team
consists of experienced members, who are specialists, that conduct the necessary
research for the team. Philip Bullen, Director, has been designated as portfolio
manager for the assets of the Global Equity Portfolio. He has 17 years of
investment experience and specializes in asset and country allocation.
 
     The Global Equity Portfolio pays Baring International Investment a basic
fee at the end of each fiscal quarter, calculated by applying a quarterly rate,
based on the following annual percentage rates, to the average month-end assets
of the Portfolio for the quarter:
 
<TABLE>
<CAPTION>
                                                                                      ANNUAL
    NET ASSETS                                                                         RATE
    ----------                                                                        ------
    <S>                                                                               <C>
    First $100 million..............................................................   0.35%
    Next $150 million...............................................................   0.30%
    Next $250 million...............................................................   0.25%
    Over $500 million...............................................................   0.20%
</TABLE>
 
     The basic advisory fee may be increased or decreased by applying an
adjustment formula based on the investment performance of the Portfolio relative
to the Morgan Stanley Capital International (MSCI) All Country Index. The
following table sets forth the incentive/penalty adjustment to the basic
advisory fee
 
                                        9
<PAGE>   53
 
payable by the Portfolio to Baring International Investment under the investment
advisory agreement. The adjustments to the fee change proportionately with
performance relative to the Index.
 
<TABLE>
<CAPTION>
    CUMULATIVE THREE YEAR PERFORMANCE
    DIFFERENTIAL VS. THE MSCI ALL COUNTRY INDEX                    INCENTIVE/PENALTY FEE ADJUSTMENT
    -------------------------------------------                    --------------------------------
    <S>                                                            <C>
    Less than 3%.................................................    0.50 X Basic Fee
    Between 3% and 6%............................................    0.75 to 1.00 X Basic Fee
    Between 6% and 9%............................................    1.00 to 1.25 X Basic Fee
    Between 9% and 12%...........................................    1.25 to 1.50 X Basic Fee
    More than 12%................................................    1.50 X Basic Fee
</TABLE>
 
     Under the rules of the Securities & Exchange Commission, the
incentive/penalty fee for Baring International Investment will not be fully
operable until the quarter ending March 31, 1998. Prior to that date the
incentive/penalty fee will be calculated according to the following transition
rules:
 
     (a) Prior to March 31, 1996.  For the quarters ending on or prior to
         December 31, 1995, the incentive/penalty fee will not be operable. The
         advisory fee payable by the Global Equity Portfolio shall be the basic
         fee, calculated as set forth above.
 
     (b) January 1, 1996 through December 31, 1997.  Beginning with the quarter
         ending March 31, 1996, and until the quarter ending December 31, 1997,
         the incentive/penalty fee will be based on a comparison of the
         investment performance of the Global Equity Portfolio and the MSCI All
         Country Index over the number of months that have elapsed between
         January 1, 1995 and the end of the quarter for which the fee is being
         computed.
 
     (c) On and After December 31, 1997.  For the quarter ending December 31,
         1997, and thereafter, the period used to calculate the
         incentive/penalty fee shall be the 36 months preceding the end of the
         quarter for which the fee is being computed and the number of
         percentage points used shall be 3.
 
     For the purpose of determining the incentive/penalty fee, the net assets of
the Global Equity Portfolio will be averaged over the same period as the
investment performance of the portfolio as well as the investment record of the
MSCI All Country Index.
 
     The current agreement will continue until March 1, 1997 and will be
renewable thereafter, for successive one-year periods, only if each renewal is
specifically approved by a vote of the Fund's Board of Directors, including the
affirmative votes of a majority of the Directors who are not parties to the
agreement or "interested persons" (as defined in the Investment Company Act of
1940) of any such party cast in person at a meeting called for the purpose of
considering such approval. In addition, the question of continuance of the
agreement may be presented to the shareholders of the Fund; in such event
continuance shall be effected only if approved by the affirmative vote of a
majority of the outstanding voting securities of the Fund. If the holders of any
Portfolio fail to approve the agreement, Baring International Investment may
continue to serve as investment adviser to each Portfolio which approved the
agreement, and to any Portfolio which did not approve the agreement until new
arrangements have been made. The agreement is automatically terminated if
assigned, and may be terminated by any Portfolio without penalty, at any time,
(1) either by vote of the Board of Directors or by vote of the outstanding
voting securities of the Portfolio on sixty (60) days' written notice to Baring
International Investment, or (2) by Baring International Investment upon ninety
(90) days' written notice to the Fund.
 
                 DESCRIPTION OF BARING INTERNATIONAL INVESTMENT
 
                            SECURITIES TRANSACTIONS
 
     The investment advisory agreement with Baring International Investment
Limited authorizes the investment adviser (with the approval of the Fund's Board
of Directors) to select the brokers or dealers that will execute the purchases
and sales of securities for the Fund's Portfolio(s) and directs the investment
adviser to use its best efforts to obtain the best available price and most
favorable execution with respect to all transactions for the Portfolio(s). Each
investment adviser has undertaken to execute each investment transaction at a
price and commission which provides the most favorable total cost or proceeds
reasonably obtainable under the circumstances.
 
                                       10
<PAGE>   54
 
     In placing portfolio transactions, each investment adviser will use its
best judgment to choose the broker most capable of providing the brokerage
services necessary to obtain best available price and most favorable execution.
The full range and quality of brokerage services available will be considered in
making these determinations. In those instances where it is reasonably
determined that more than one broker can offer the brokerage services needed to
obtain the best available price and most favorable execution, consideration may
be given to those brokers which supply investment research and statistical
information, and provide other services in addition to execution services to the
Fund and/or the investment adviser. Each investment adviser considers the
investment services it receives useful in the performance of its obligations
under the agreement but is unable to determine the amount by which such services
may reduce its expenses.
 
     The investment advisory agreement also incorporates the concepts of Section
28(e) of the Securities Exchange Act of 1934 by providing that, subject to the
approval of the Fund's Board of Directors, each investment adviser may cause the
Fund to pay a broker-dealer which furnishes brokerage and research services a
higher commission than that which might be charged by another broker-dealer for
effecting the same transaction; provided that such commission is deemed
reasonable in terms of either that particular transaction or the overall
responsibilities of the investment adviser to the Fund and the other Funds in
the Group.
 
     Currently, it is the Fund's policy that each investment adviser may at
times pay higher commissions in recognition of brokerage services felt necessary
for the achievement of better execution of certain securities transactions that
otherwise might not be available. An investment adviser will only pay such
higher commissions if it believes this to be in the best interest of the Fund.
Some brokers or dealers who may receive such higher commissions in recognition
of brokerage services related to execution of securities transactions are also
providers of research information to the investment adviser and/or the Fund.
However, the investment adviser has informed the Fund that it will not pay
higher commission rates specifically for the purpose of obtaining research
services.
 
     Since the Fund does not market its shares through intermediary brokers or
dealers, it is not the Fund's practice to allocate brokerage or principal
business on the basis of sales of its shares which may be made through such
firms. However, the Fund may place portfolio orders with qualified
broker-dealers who recommend the sale of shares of the Fund and may, when a
number of brokers and dealers can provide comparable best price and execution on
a particular transaction, consider the sale of Fund shares by a broker or dealer
in selecting among qualified broker-dealers.
 
     Some securities considered for investment by one Portfolio may also be
appropriate for the other Portfolios and the other Funds and/or clients served
by the investment advisers. If purchase or sale of securities consistent with
the investment policies of a Portfolio, the other Portfolios and/or one or more
of these other Funds or clients are considered at or about the same time,
transactions in such securities will be allocated among the Portfolios and the
several Funds and clients in a manner deemed equitable by the respective
investment adviser. Although there will be no specified formula for allocating
such transactions, the allocation methods used, and the results of such
allocations, will be subject to periodic review by the Fund's Board of
Directors.
 
                               PURCHASE OF SHARES
 
     The Fund reserves the right in its sole discretion (i) to suspend the
offering of its shares, (ii) to reject purchase orders when in the judgment of
management such rejection is in the best interest of the Fund or any Portfolio,
and (iii) to reduce or waive the minimum for initial and subsequent investments
as well as redemption fees for certain fiduciary accounts such as employee
benefit plans or under circumstances where certain economies can be achieved in
sales of the Fund's shares.
 
                              REDEMPTION OF SHARES
 
     The Fund may suspend redemption privileges or postpone the date of payment
(i) during any period that the New York Stock Exchange is closed, or trading on
the Exchange is restricted as determined by the Securities and Exchange
Commission (the "Commission"), (ii) during any period when an emergency exists
as defined by the rules of the Commission as a result of which it is not
reasonably practicable for the Fund to
 
                                       11
<PAGE>   55
 
dispose of securities owned by it, or fairly to determine the value of its
assets, and (iii) for such other periods as the Commission may permit.
 
     The Fund has made an election with the Commission to pay in cash all
redemptions requested by any shareholder of record limited in amount during any
90-day period to the lesser of $250,000 or 1% or the net assets of the Fund at
the beginning of such period. Such commitment is irrevocable without the prior
approval of the Commission. Redemptions in excess of the above limits may be
paid in whole or in part, in investment securities or in cash, as the Directors
may deem advisable; however, payment will be made wholly in cash unless the
Directors believe that economic or market conditions exist which would make a
practice detrimental to the best interests of the Fund. If redemptions are paid
in investment securities, such securities will be valued as set forth in the
Prospectus under "The Share Price of Each Portfolio" and a redeeming shareholder
would normally incur brokerage expenses if he converted these securities to
cash.
 
                              COMPARATIVE INDEXES
 
     Each of the investment company members of The Vanguard Group, including
Vanguard Horizon Fund, Inc., may, from time to time, use one or more of the
following unmanaged indices for comparative performance purposes.
 
STANDARD AND POOR'S 500 COMPOSITE STOCK PRICE INDEX -- is a well diversified
list of 500 companies representing the U.S. Stock Market.
 
WILSHIRE 5000 EQUITY INDEXES -- consists of approximately 6,000 common equity
securities, covering all stocks in the U.S. for which daily pricing is
available.
 
WILSHIRE 4500 EQUITY INDEX -- consists of all stocks in the Wilshire 5000 except
for the 500 stocks in the Standard and Poor's 500 Index.
 
MORGAN STANLEY CAPITAL INTERNATIONAL EAFE INDEX -- is an arithmetic, market
value-weighted average of the performance of over 900 securities listed on the
stock exchanges of countries in Europe, Australia and the
Far East.
 
GOLDMAN SACHS 100 CONVERTIBLE BOND INDEX -- currently includes 67 bonds and 33
preferreds. The original list of names was generated by screening for
convertible issues of 100 million or greater in market capitalization. The index
is priced monthly.
 
SALOMON BROTHERS GNMA INDEX -- includes pools of mortgages originated by private
lenders and guaranteed by the mortgage pools of the Government National Mortgage
Association.
 
SALOMON BROTHERS HIGH-GRADE CORPORATE BOND INDEX -- consists of publicly issued,
non-convertible corporate bonds rated AA or AAA. It is a value-weighted, total
return index, including approximately 800 issues with maturities of 12 years or
greater.
 
LEHMAN LONG-TERM TREASURY BOND -- is composed of all bonds covered by the
Shearson Lehman Hutton Treasury Bond Index with maturities of 10 years or
greater.
 
MERRILL LYNCH CORPORATE & GOVERNMENT BOND -- consists of over 4,500 U.S.
Treasury, Agency and investment grade corporate bonds.
 
LEHMAN CORPORATE (Baa) BOND INDEX -- all publicly offered fixed-rate,
nonconvertible domestic corporate bonds rated Baa by Moody's, with a maturity
longer than 1 year and with more than $25 million outstanding. This index
includes over 1,000 issues.
 
BOND BUYER MUNICIPAL INDEX (20 YEAR) BOND -- is a yield index on current coupon
high-grade general obligation municipal bonds.
 
STANDARD & POOR'S PREFERRED INDEX -- is a yield index based upon the average
yield for four high-grade, non-callable preferred stock issues.
 
                                       12
<PAGE>   56
 
NASDAQ INDUSTRIAL INDEX -- is composed of more than 3,000 industrial issues. It
is a value-weighted index calculated on price change only and does not include
income.
 
COMPOSITE INDEX -- 70% Standard & Poor's 500 Index and 30% NASDAQ Industrial
Index.
 
COMPOSITE INDEX -- 35% Standard & Poor's 500 Index and 65% Salomon Brothers High
Grade Bond Index.
 
COMPOSITE INDEX -- 65% Standard & Poor's 500 Index and 35% Salomon Brothers High
Grade Bond Index.
 
RUSSELL 2000 SMALL COMPANY STOCK INDEX -- consists of the smallest 2,000 stocks
within the Russell 3000; a widely-used benchmark for small capitalization common
stocks.
 
LEHMAN BROTHERS AGGREGATE BOND INDEX -- is a market weighted index that contains
individually priced U.S. Treasury, agency, corporate, and mortgage pass-through
securities corporate rated BBB- or better. The Index has a market value of over
$4 trillion.
 
LEHMAN BROTHERS MUTUAL FUND SHORT (1-5) GOVERNMENT/CORPORATE INDEX -- is a
market weighted index that contains individually priced U.S. Treasury, agency,
and corporate investment grade bonds rated BBB- or better with maturities
between 1 and 5 years. The index has a market value of over $1.3 trillion.
 
LEHMAN BROTHERS MUTUAL FUND INTERMEDIATE (5-10) GOVERNMENT/CORPORATE INDEX -- is
a market weighted index that contains individually priced U.S. Treasury, agency,
and corporate securities rated BBB- or better with maturities between 5 and 10
years. The index has a market value of over $600 billion.
 
LEHMAN BROTHERS MUTUAL FUND LONG (10+) GOVERNMENT/CORPORATE INDEX -- is a market
weighted index that contains individually priced U.S. Treasury, agency, and
corporate securities rated BBB- or better with maturities greater than 10 years.
The index has a market value of over $900 billion.
 
LIPPER BALANCED FUND AVERAGE -- An industry benchmark of average balanced funds
with similar investment objectives and policies, as measured by Lipper
Analytical Services, Inc.
 
LIPPER NON-GOVERNMENT MONEY MARKET FUND AVERAGE -- An industry benchmark of
average non-government money market funds with similar investment objectives and
policies, as measured by Lipper Analytical Services, Inc.
 
LIPPER GOVERNMENT MONEY MARKET FUND AVERAGE -- An industry benchmark of average
government money market funds with similar investment objectives and policies,
as measured by Lipper Analytical Services, Inc.
 
LIPPER SMALL COMPANY GROWTH FUND AVERAGE -- the average performance of small
company growth funds as defined by Lipper Analytical Services, Inc. Lipper
defines a small company growth fund as a fund that by prospectus or portfolio
practice, limits its investments to companies on the basis of the size of the
company. From time to time, Vanguard may advertise using the average performance
and/or the average expense ratio of the small company growth funds. (This fund
category was first established in 1982. For years prior to 1982, the results of
the Lipper Small Company Growth category were estimated using the returns of the
Funds that constituted the Group at its inception.)
 
RUSSELL 3000 INDEX -- consists of approximately the 3,000 largest stocks of U.S.
domiciled companies commonly traded on the New York and American Stock Exchanges
or the NASDAQ over-the-counter market, accounting for over 90% of the market
value of publicly traded Stocks in the U.S.
 
     Advertisements which refer to the use of the fund as a potential investment
for Individual Retirement Accounts may quote a total return based upon
compounding of dividends on which it is presumed no Federal income tax applies.
 
     In assessing such comparisons of yields, an investor should keep in mind
that the composition of the investments in the reported averages is not
identical to the Fund's Portfolio and that the items included in the
calculations of such averages may not be identical to the formula used by the
Fund to calculate its yield. In addition there can be no assurance that the Fund
will continue its performance as compared to such other averages.
 
                                       13
<PAGE>   57
 
                                     PART C
                          VANGUARD HORIZON FUND, INC.
                               OTHER INFORMATION
 
ITEM 24. FINANCIAL STATEMENTS AND EXHIBITS
     (a) FINANCIAL STATEMENTS
         Statement of Assets and Liabilities*
         Report of Independent Accountants*
 
     (b) EXHIBITS
 
      1. Articles of Incorporation*
      2. By-Laws of Registrant*
      3. Not Applicable
      4. Not Applicable
      5. Not Applicable
      6. Not Applicable
      7. Reference is made to the section entitled "Management of the Fund" in
         the Registrant's Statement of Additional Information
      9. Form of Vanguard Service Agreement*
     10. Opinion of Counsel*
     11. Consent of Independent Accountants**
     12. Financial Statements*
     13. Not Applicable
     14. Not Applicable
     15. Not Applicable
     16. Not Applicable
- ---------------
 * Previously filed.
** Filed herewith.
 
ITEM 25. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL WITH REGISTRANT
 
     Registrant is not controlled by or under common control with any person.
The officers of the Registrant, the investment companies in The Vanguard Group
of Investment Companies and The Vanguard Group, Inc. are identical. Reference is
made to the caption "Management of the Fund" in the Prospectus constituting Part
A and in the Statement of Additional Information constituting Part B of this
Registration Statement.
 
ITEM 26. NUMBER OF HOLDERS OF SECURITIES
 
     None.
 
ITEM 27. INDEMNIFICATION
 
     Reference is made to Article IX of Registrant's Articles of Incorporation.
 
     Insofar as indemnification for liability arising under the Securities Act
of 1933 may be permitted to trustees, directors, officers and controlling
persons of the registrant pursuant to the foregoing provisions, or otherwise,
the registrant has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a trustee, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
<PAGE>   58
 
indemnification by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.
 
ITEM 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER
 
     Reference is made to the caption "Investment Advisers" in the prospectus
constituting Part "A" of this Registration Statement and "Investment Advisory
Services" in Part "B" of this Registration Statement.
 
ITEM 29. PRINCIPAL UNDERWRITERS
 
     (a) None
 
     (b) Not Applicable
 
ITEM 30. LOCATION OF ACCOUNTS AND RECORDS
 
     The books, accounts and other documents required by Section 31(a) under the
Investment Company Act and the rules promulgated thereunder will be maintained
in the physical possession of Registrant; Registrant's Transfer Agent, The
Vanguard Group, Inc. c/o The Vanguard Financial Center, Valley Forge,
Pennsylvania 19482; and the Registrant's Custodians.
 
ITEM 31. MANAGEMENT SERVICES
 
     Other than the Amended and Restated Funds' Service Agreement with The
Vanguard Group, Inc. which is filed herewith as Exhibit 9 and described in Part
B hereof under "Management of the Fund"; the Registrant is not a party of any
management-related service contract.
 
ITEM 32. UNDERTAKINGS
 
     Registrant undertakes to file a pre-effective amendment, using financial
statements which reflect its initial capitalization prior to being declared
effective.
 
     Registrant also undertakes to hold a First Annual Meeting of Shareholders
by the end of the Registrant's first sixteen months of operation for the purpose
of electing directors, approving the Investment Advisory and Service Agreements
and appointing auditors. Thereafter, annual meetings will not be held except as
required by the Investment Company Act of 1940 ("1940 Act") or other applicable
law. Registrant undertakes to comply with the provisions of Section 16(c) of the
1940 Act in regard to shareholders' rights to call a meeting of shareholders for
the purpose of voting on the removal of Directors and to assist in shareholder
communications in such matters, to the extent required by law.
 
     Registrant hereby undertakes to provide an Annual Report to Shareholders or
prospective investors, free of charge, upon request.
 
     Registrant undertakes to file a post-effective amendment containing
financial statements, which need not be audited, within 4-6 months from
effectiveness.
<PAGE>   59
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the Town of Valley Forge and the Commonwealth of Pennsylvania, on
the 3rd day of April 1995.
 
    VANGUARD HORIZON FUND, INC.
 
BY: (Raymond J. Klapinsky) John C. Bogle*, Chairman and Chief Executive Officer
 
     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below by the following persons in the
capacities and on the date indicated:
 
BY: (Raymond J. Klapinsky)
    John C. Bogle*, Chairman of the Board, Director
    and Chief Executive Officer
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    John J. Brennan*, President and Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    Robert C. Cawthorn*, Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    Barbara B. Hauptfuhrer*, Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    Burton G. Malkiel*, Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    Bruce K. MacLaury, Jr.*, Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    Alfred M. Rankin, Jr.*, Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    John C. Sawhill*, Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    James O. Welch, Jr.*, Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    J. Lawrence Wilson*, Director
    April 3, 1995
 
BY: (Raymond J. Klapinsky)
    Richard F. Hyland*, Treasurer and Principal
    Financial Officer and Accounting Officer
    April 3, 1995
    
 
*By Power of Attorney. See File Number 2-14336, January 23, 1990. Incorporated
by Reference.
<PAGE>   60
 
                          VANGUARD HORIZON FUND, INC.
                               INDEX TO EXHIBITS
 
<TABLE>
<S>                                                                                    <C>
Consent of Independent Accountants...................................................  Ex-99.B11
Financial Statements.................................................................  Ex-99.B12
</TABLE>

<PAGE>   1
 
                                                                       EX-99.B11
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
     We hereby consent to the use in the Statement of Additional Information
constituting part of this amended Registration Statement on Form N-1A of our
report dated January 27, 1995, relating to the financial statement of the
Aggressive Growth Portfolio of Vanguard Horizon Fund, Inc., which appears in
such Statement of Additional Information. We also consent to the reference to us
under the heading "General Information" in the Prospectus.
 
PRICE WATERHOUSE LLP
 
Thirty South Seventeenth Street
Philadelphia, Pennsylvania 19103
March 31, 1995

<PAGE>   1
 
                                                                       EX-99.B12
 
                          VANGUARD HORIZON FUND, INC.
 
                          AGGRESSIVE GROWTH PORTFOLIO
                      STATEMENT OF ASSETS AND LIABILITIES
 
                                JANUARY 27, 1995
 
<TABLE>
          <S>                                                                  <C>
          Assets
            Cash.............................................................   $100,000
                                                                               =========
          Liabilities........................................................       None
          Net Assets.........................................................   $100,000
                                                                               =========
          Net Asset Value and Offering Price Per Share: One Billion Shares of
            common stock authorized with $.001 par value, 10,000 shares
            issued and outstanding...........................................     $10.00
</TABLE>
 
     The Vanguard Horizon Fund, Inc. (the "Fund") is an open-end, diversified
management investment company registered under the Investment Company Act of
1940, as amended (the "Act"). The Fund was organized as a Maryland Corporation
on November 9, 1994. The Fund had no operations other than the sale of shares of
common stock of the Fund, at an aggregate cost of $100,000, to an officer of the
Fund, representing the initial capital of the Fund. Costs incurred in connection
with the organization and registration of the Fund have been borne by The
Vanguard Group, Inc. ("Vanguard"), a jointly-owned subsidiary of The Vanguard
Group of Investment Companies.
 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Shareholder and Board of Directors
Vanguard Horizon Fund, Inc.
 
   
     In our opinion, the accompanying statement of assets and liabilities
presents fairly, in all material respects, the financial position of the
Aggressive Growth Portfolio of Vanguard Horizon Fund, Inc. (the "Fund") at
January 27, 1995, in conformity with generally accepted accounting principles.
This financial statement is the responsibility of the Fund's management; our
responsibility is to express an opinion on this financial statement based on our
audit. We conducted our audit of this financial statement in accordance with
generally accepted auditing standards which require that we plan and perform the
audit to obtain reasonable assurance about whether the financial statement is
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statement,
assessing the accounting principles used and significant estimates made by
management, and evaluating the overall financial statement presentation. We
believe that our audit provides a reasonable basis for the opinion expressed
above.
    
 
Price Waterhouse LLP
 
Thirty South Seventeenth Street
Philadelphia, Pennsylvania 19103
January 27, 1995


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