VANGUARD INDEX TRUST
485APOS, 1994-10-07
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                   FORM N-1A
                   REGISTRATION STATEMENT (NO. 2-56846) UNDER
                           THE SECURITIES ACT OF 1933
                          PRE-EFFECTIVE AMENDMENT NO.
   
                        POST-EFFECTIVE AMENDMENT NO. 39
    
                                      AND
 
              REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
                                  ACT OF 1940
   
                                AMENDMENT NO. --
    
                              VANGUARD INDEX TRUST
               (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
 
              IT IS PROPOSED THAT THIS AMENDMENT BECOME EFFECTIVE;
   
          on December 30, 1994, pursuant to paragraph (a) of Rule 485.
    
 
                 APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
  As soon as practicable after this Registration Statement becomes effective.
 
     REGISTRANT ELECTS TO REGISTER AN INDEFINITE NUMBER OF SHARES PURSUANT TO
REGULATION 24F-2 UNDER THE INVESTMENT COMPANY ACT OF 1940. REGISTRANT FILED ITS
RULE 24F-2 NOTICE FOR THE YEAR ENDED DECEMBER 31, 1993 ON FEBRUARY 23, 1994.
 
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                              VANGUARD INDEX TRUST
 
                             CROSS REFERENCE SHEET
   
<TABLE>
<CAPTION>
                         FORM N-1A
                        ITEM NUMBER                                   LOCATION IN PROSPECTUS
<C>           <S>                                              <C>
    Item 1.   Cover Page....................................   Cover Page
    Item 2.   Synopsis......................................   Highlights
    Item 3.   Condensed Financial Information...............   Financial Highlights
    Item 4.   General Description of Registrant.............   Investment Objectives; Investment
                                                               Limitations; Investment Policies;
                                                               General Information
    Item 5.   Management of the Funds.......................   Management of the Funds; The Vanguard
                                                               Group
    Item 6.   Capital Stock and Other Securities............   Opening an Account and Purchasing
                                                               Each Funds Shares; Selling Your
                                                               Shares; Share Price; 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
<C>           <S>                                              <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
                                                               Statements
   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 Statements
</TABLE>
    
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                                                                     [FIGURE 1]


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                         P  R  O  S  P  E  C  T  U  S

                              DECEMBER 30, 1994




                             VANGUARD INDEX TRUST

                           VANGUARD BOND INDEX FUND

                         VANGUARD BALANCED INDEX FUND

                   VANGUARD INTERNATIONAL EQUITY INDEX FUND


                                    [LOGO]


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                     [THIS PAGE INTENTIONALLY LEFT BLANK.]
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[LOGO] 
                                                   Members of The Vanguard Group
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PROSPECTUS--DECEMBER 30, 1994
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NEW ACCOUNT INFORMATION: INVESTOR INFORMATION DEPARTMENT--1-800-662-7447 (SHIP)
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SHAREHOLDER ACCOUNT SERVICES: CLIENT SERVICES DEPARTMENT--1-800-662-2739 (CREW)
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INVESTMENT
OBJECTIVES AND
POLICIES                Vanguard Index Funds are four separate, individual
                        open-end diversified investment companies. The Funds are
                        organized as follows: Vanguard Bond Index Fund, Inc.
                        including the Total Bond Market, Short-Term Bond,
                        Intermediate-Term Bond and Long-Term Bond Portfolios;
                        Vanguard Balanced Index Fund, Inc.; Vanguard Index Trust
                        including the 500, Extended Market, Total Stock Market,
                        Small Capitalization Stock, Value and Growth Portfolios;
                        and Vanguard International Equity Index Fund, Inc.
                        including the European, Pacific and Emerging Markets
                        Portfolios. Each of the Portfolios invests in securities
                        (bonds or common stocks) in order to match the
                        investment performance of a distinct market index.
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OPENING AN
ACCOUNT                 To open a regular (non-retirement) account, please
                        complete and return the Account Registration Form. If
                        you need assistance in completing this Form, please call
                        our Investor Information Department. To open an
                        Individual Retirement Account (IRA), please use a
                        Vanguard IRA Adoption Agreement. To obtain a copy of
                        this form, call 1-800-662-7447, 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 for each Portfolio ($500 for
                        Individual Retirement Accounts and Uniform
                        Gifts/Transfers to Minors Act accounts). Each of the
                        Vanguard Index Funds assesses a $10 annual account
                        maintenance fee. A portfolio transaction fee of 1% is
                        deducted from purchases of the Extended Market and Small
                        Capitalization Stock Portfolios of Vanguard Index Trust
                        and a 0.25% portfolio transaction fee is deducted from
                        purchases of its Total Stock Market Portfolio. The
                        European and Pacific Portfolios of Vanguard
                        International Equity Index Fund assess a 1% portfolio
                        transaction fee on purchases and its Emerging Markets
                        Portfolio assesses a 2% portfolio transaction fee on
                        purchases and a 1% portfolio transaction fee on
                        redemptions. Portfolio transaction fees are paid to the
                        Portfolios to offset transaction costs of buying and
                        selling securities of small- and medium-sized companies
                        and international companies. See "Fund Expenses."
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ABOUT THIS
PROSPECTUS              This Prospectus is designed to set forth concisely the
                        information you should know about the Vanguard Index
                        Funds before you invest. It should be retained for
                        future reference. "Statements of Additional Information"
                        containing additional information about each of the
                        Vanguard Index Funds have been filed with the Securities
                        and Exchange Commission. These Statements are dated
                        December 30, 1994 and have been incorporated by
                        reference into this Prospectus. A copy may be obtained
                        without charge by writing to the Funds or by calling the
                        Investor Information Department.
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TABLE OF CONTENTS
 
<TABLE>
<S>                                                                           <C>
                                                                              Page
Highlights.................................................................... 2
Fund Expenses................................................................. 5
Financial Highlights.......................................................... 8
Yield and Total Return........................................................14
 
       FUND INFORMATION
Investment Objectives.........................................................15
Investment Policies...........................................................17
Investment Risks..............................................................23
Who Should Invest.............................................................28
Implementation of Policies....................................................31
Investment Limitations........................................................42
Management of the Funds.......................................................43
Investment Advisers...........................................................44
Dividends, Capital Gains
 and Taxes....................................................................45
The Share Price of
 Each Portfolio...............................................................47
General Information...........................................................48
       SHAREHOLDER GUIDE
Opening an Account and
 Purchasing Shares............................................................49
When Your Account Will
 Be Credited..................................................................53
Selling Your Shares...........................................................54
Exchanging Your Shares........................................................58
Important Information About
 Telephone Transactions.......................................................59
Transferring Registration.....................................................60
Other Vanguard Services.......................................................60
</TABLE> 
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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.
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<PAGE>   6
 
                                   HIGHLIGHTS
 
                        Vanguard offers four index funds consisting of a total
                        of fourteen separate portfolios. Unlike other mutual
                        funds which generally attempt to "beat" market averages
                        with often unpredictable results, Vanguard's index funds
                        seek to "match" the performance of their underlying
                        indexes and thus are expected to provide a highly
                        predictable return relative to their benchmarks. The
                        Funds offer investors the advantages of a "passive"
                        approach to investing. These include low investment
                        costs, exceptional diversification among securities,
                        minimal portfolio turnover, and relative predictability.
 
                        As with any mutual fund there is no assurance that a
                        fund will meet its goal.
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INVESTMENT
OBJECTIVES AND
POLICIES

VANGUARD BOND
INDEX FUND              Each of the four Funds is an open-end diversified
                        investment company.
 
                        The Fund consists of four Portfolios each of which
                        invests in bonds.
 
                        - The TOTAL BOND MARKET PORTFOLIO seeks to replicate the
                          performance of the Lehman Brothers Aggregate Bond
                          Index.
                        - The SHORT-TERM BOND PORTFOLIO seeks to replicate the
                          performance of the Lehman Brothers Mutual Fund Short
                          (1-5) Government/Corporate Index.
                        - The INTERMEDIATE-TERM BOND PORTFOLIO seeks to
                          replicate the performance of the Lehman Brothers
                          Mutual Fund Intermediate (5-10) Government/Corporate
                          Index.
                        - The LONG-TERM BOND PORTFOLIO seeks to replicate the
                          performance of the Lehman Brothers Mutual Fund Long
                          (10+) Government/Corporate Index.
 
                        Each Portfolio will invest at least 80% of its assets in
                        securities included in its respective index. The Lehman
                        Brothers Indexes encompass two major classes of
                        investment grade fixed income securities: U.S. Treasury
                        and agency securities and corporate bonds. Additionally,
                        the Lehman Brothers Aggregate Bond Index includes
                        mortgage-backed securities.
                        --------------------------------------------------------
 
VANGUARD BALANCED
INDEX FUND              The Fund invests in U.S. common stocks and bonds. It
                        seeks to replicate with respect to 60% of its assets the
                        performance of the Wilshire 5000 Index and with respect
                        to 40% of its assets, the Lehman Brothers Index. Under
                        normal circumstances the Fund will invest primarily in
                        securities of its underlying indexes.
                        -------------------------------------------------------
  
VANGUARD INDEX TRUST    The Trust consists of six separate Portfolios each of
                        which invests in U.S. common stocks.
 
                        - The 500 PORTFOLIO seeks to replicate the performance
                          of the S&P 500 Index.
                        - The EXTENDED MARKET PORTFOLIO seeks to replicate the
                          performance of the Wilshire 4500 Index.
                        - The TOTAL STOCK MARKET PORTFOLIO seeks to replicate
                          the performance of the Wilshire 5000 Index.
 
                                        2
<PAGE>   7
 
                        - The SMALL CAPITALIZATION STOCK PORTFOLIO seeks to
                          replicate the performance of the Russell 2000 Small
                          Stock Index.
                        - The VALUE PORTFOLIO seeks to replicate the performance
                          of the S&P/BARRA Value Index.
                        - The GROWTH PORTFOLIO seeks to replicate the
                          performance of the S&P/BARRA Growth Index.
                        --------------------------------------------------------
 
VANGUARD
INTERNATIONAL
EQUITY INDEX FUND       The Fund consists of three Portfolios each of which
                        invests in international common stocks.
 
                        - The EUROPEAN PORTFOLIO seeks to parallel the
                          performance of the Morgan Stanley Capital
                          International -- Europe (Free) Index.
                        - The PACIFIC PORTFOLIO seeks to parallel the
                          performance of the Morgan Stanley Capital
                          International -- Pacific Index.
                        - The EMERGING MARKETS PORTFOLIO seeks to parallel the
                          performance of the Morgan Stanley Capital
                          International -- Select Emerging Markets Free Index.
 
                        The European Portfolio and the Pacific Portfolio invest
                        primarily in the common stocks included in their
                        respective indexes. The Emerging Markets Portfolio
                        invests 95% of its assets in securities which are
                        representative of securities in its index and 5% in cash
                        reserves.                                         PAGE -
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INVESTMENT
RISKS                   The Portfolios of the Vanguard Bond Index Fund and the
                        bond portion of the Vanguard Balanced Fund are subject
                        to risks associated with fixed income investing
                        including interest rate, income, call and credit risks.
                        Additionally, since the Total Bond Market Portfolio of
                        Vanguard Bond Index Fund invests in mortgage-backed
                        securities, the Portfolio is subject to prepayment risk.
 
                        The equity portion of Vanguard Balanced Index Fund and
                        the Portfolios of Vanguard Index Trust and Vanguard
                        International Equity Index Fund are subject to stock
                        market risk, which is the possibility that common stock
                        prices will decline over short or extended periods. Both
                        U.S. and foreign stock markets tend to be cyclical, with
                        periods when stock prices generally rise and periods
                        when stock prices generally decline. Additionally, the
                        Portfolios of Vanguard International Equity Index Fund
                        are subject to currency risk, the risk that changes in
                        foreign exchange rates will affect the value of foreign
                        securities held by the Portfolios.
 
                        Investors considering the Emerging Markets Portfolio
                        should be aware that emerging markets can be
                        substantially more volatile than both U.S. and more
                        developed foreign markets. Volatility in emerging
                        markets can be exacerbated by illiquidity in the market
                        for emerging market stocks.
 
                        Because of the risks associated with common stocks and
                        bonds, the Funds 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 should not consider an investment in any one
                        portfolio a complete investment program, but should
                        maintain holdings of securities with different risk
                        characteristics -- including
 
                                        3
<PAGE>   8
 
                        U.S. common stocks, bonds and money market instruments.
                        For further information concerning the risks associated
                        with investing in the Funds, see "Investment
                        Risks".                                           PAGE -
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THE VANGUARD
GROUP                   The Funds are members 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 -
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INVESTMENT
ADVISERS                The Vanguard Bond Index Fund and the bond portion of
                        Vanguard Balanced Index Fund receive investment advisory
                        services from Vanguard's Fixed Income Group. Vanguard
                        Index Trust, Vanguard International Equity Index Fund
                        and the equity portion of Vanguard Balanced Index Fund
                        receive investment advisory services from Vanguard's
                        Core Management Group. All investment advisory services
                        are provided to the Index Funds on an at-cost basis. As
                        a result, the Funds receive investment advisory services
                        at a substantially lower cost than would be possible if
                        the Funds paid an investment advisory fee to an external
                        investment adviser.                               PAGE -
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FEES AND EXPENSES       The Portfolios are subject to the following transaction
                        fees:
 
<TABLE>
<CAPTION>
                                                                                      FEE DEDUCTED
                                                                    FEE DEDUCTED          FROM
                                                                   FROM PURCHASES     REDEMPTIONS
                           <S>                                     <C>              <C>
                           VANGUARD INDEX TRUST
                           Extended Market Portfolio                      1%              None
                           Total Stock Market Portfolio                 .25%              None
                           Small Capitalization Stock Portfolio           1%              None
                           VANGUARD INTERNATIONAL EQUITY INDEX
                             FUND
                           European Portfolio                             1%              None
                           Pacific Portfolio                              1%              None
                           Emerging Markets Portfolio                     2%                1%
</TABLE>
 
                        Portfolio transaction fees are paid directly to the
                        Portfolios to offset transaction costs of buying
                        securities of small- and medium-sized companies and
                        international companies.
 
                        Additionally, shareholders will also incur a $10 annual
                        account maintenance fee for each account in any of
                        Vanguard's Index Funds.                           PAGE -
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                                        4
<PAGE>   9
 
FUND EXPENSES           The following table illustrates all expenses and fees
                        that you would incur as a shareholder of Vanguard Index
                        Trust, Vanguard Bond Index Fund, Vanguard International
                        Equity Index Fund and Vanguard Balanced Index Fund. The
                        expenses and fees set forth below are for the 1993
                        fiscal year.
 
<TABLE>
<CAPTION>
                                                              TOTAL                                    SMALL
                                                EXTENDED      STOCK                                CAPITALIZATION    BALANCED
     SHAREHOLDER TRANSACTION          500        MARKET      MARKET        VALUE       GROWTH          STOCK          INDEX
            EXPENSES               PORTFOLIO    PORTFOLIO   PORTFOLIO    PORTFOLIO    PORTFOLIO     PORTFOLIO***       FUND
<S>                                <C>          <C>         <C>          <C>          <C>          <C>               <C>
- -----------------------------------------------------------------------------------------------------------------------------
Sales Load Imposed on
  Purchases......................     None        None*        None**       None         None           None*          None
Sales Load Imposed on
  Reinvested Dividends...........     None        None         None         None         None           None           None
Redemption Fees..................     None        None         None         None         None           None           None
Exchange Fees....................     None        None         None         None         None           None           None
</TABLE>
  *Shareholders are charged a 1% portfolio transaction fee, payable directly to 
   the Portfolio, on each purchase of shares.
 **Shareholders are charged a 0.25% portfolio transaction fee, payable directly
   to the Portfolio, on each purchase of shares.
***Formerly Vanguard Small Capitalization Stock Fund, Inc.

 
<TABLE>
<CAPTION>
                                                              TOTAL                                    SMALL
                                                EXTENDED      STOCK                                CAPITALIZATION    BALANCED
      ANNUAL FUND OPERATING           500        MARKET      MARKET        VALUE       GROWTH          STOCK          INDEX
            EXPENSES               PORTFOLIO    PORTFOLIO   PORTFOLIO    PORTFOLIO    PORTFOLIO     PORTFOLIO***       FUND
<S>                                <C>          <C>         <C>          <C>          <C>          <C>               <C>
- -----------------------------------------------------------------------------------------------------------------------------
Management & Administrative
  Expenses++.....................     0.15%       0.15%        0.15%        0.14%        0.13%          0.13%          0.14%
Investment Advisory Fees.........     None        None         None         None         None           None           None
12b-1 Fees.......................     None        None         None         None         None           None           None
Other Expenses
  Distribution Costs.............     0.03        0.02         0.03         0.02         0.02           0.02           0.02
  Miscellaneous Expenses.........     0.01        0.03         0.02         0.04         0.05           0.03           0.04
                                   --------     --------    --------     --------     --------     -----------       --------
Total Other Expenses.............     0.04        0.05         0.05         0.06         0.07           0.05           0.06
                                   --------     --------    --------     --------     --------     -----------       --------
    TOTAL OPERATING EXPENSES.....     0.19%       0.20%        0.20%        0.20%        0.20%          0.18%          0.20%
                                   --------     --------    --------     --------     --------     -----------       --------
                                   --------     --------    --------     --------     --------     -----------       --------
</TABLE>
***Formerly Vanguard Small Capitalization Stock Fund, Inc.
 ++In addition to these costs, each Portfolio assesses an annual account 
   maintenance fee of $10.

 
<TABLE>
<CAPTION>
                              TOTAL      SHORT-                       LONG-
                              BOND        TERM      INTERMEDIATE-     TERM                             EMERGING
 SHAREHOLDER TRANSACTION     MARKET       BOND        TERM BOND       BOND      EUROPEAN    PACIFIC    MARKETS
         EXPENSES           PORTFOLIO   PORTFOLIO     PORTFOLIO     PORTFOLIO   PORTFOLIO  PORTFOLIO   PORTFOLIO
<S>                         <C>         <C>         <C>             <C>         <C>        <C>         <C>      
- ----------------------------------------------------------------------------------------------------------------
Sales Load Imposed on
  Purchases...............     None        None          None          None       None*       None*      None+
Sales Load Imposed on
  Reinvested Dividends....     None        None          None          None       None        None       None
Redemption Fees++.........     None        None          None          None       None        None          1%**
Exchange Fees.............     None        None          None          None       None        None       None
</TABLE>
  *Shareholders are charged a 1% portfolio transaction fee, payable directly to 
   the Portfolio on each purchase of shares.
 **The 1% portfolio transaction fee withheld from redemption proceeds is paid 
   to the Portfolio.
  +Shareholders are charged a 2% portfolio transaction fee, payable directly to
   the Portfolio on each purchase of shares.
 ++Wire redemptions of less than $5,000 are subject to a $5 processing fee.

 
                                        5
<PAGE>   10
 
<TABLE>
<CAPTION>
                              TOTAL      SHORT-
                              BOND        TERM      INTERMEDIATE-   LONG-TERM                          EMERGING
  ANNUAL FUND OPERATING      MARKET       BOND        TERM BOND       BOND      EUROPEAN    PACIFIC    MARKETS
         EXPENSES           PORTFOLIO   PORTFOLIO     PORTFOLIO     PORTFOLIO   PORTFOLIO  PORTFOLIO   PORTFOLIO
<S>                         <C>         <C>         <C>             <C>         <C>        <C>         <C>      
- ----------------------------------------------------------------------------------------------------------------
Management &
  Administrative
  Expenses***.............     0.13%       0.13%         0.13%         0.13%      0.14%       0.18%      0.12%
Investment Advisory
  Fees....................     None        None          None          None       None        None       None
12b-1 Fees................     None        None          None          None       None        None       None
Other Expenses
  Distribution Costs......     0.03        0.03          0.03          0.03       0.02        0.02       0.03
  Miscellaneous
    Expenses..............     0.02        0.02          0.02          0.02       0.16        0.12       0.45
                            --------    --------    ----------      --------    --------   --------    --------
Total Other Expenses......     0.05        0.05          0.05          0.05       0.18        0.14       0.48
                            --------    --------    ----------      --------    --------   --------    --------
    TOTAL OPERATING
      EXPENSES............     0.18%       0.18%         0.18%         0.18%      0.32%       0.32%      0.60%
                            --------    --------    ----------      --------    --------   --------    --------
                            --------    --------    ----------      --------    --------   --------    --------
</TABLE>
***In addition to these costs, shareholders incur an annual account maintenance
   fee of $10. (This maintenance fee will be waived until December 31, 1994 for
   the Short-Term Bond, Intermediate-Term Bond, Long-Term Bond and the Emerging
   Markets Portfolios.)

 
                        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
                        Funds.
 
SIX PORTFOLIOS ASSESS
TRANSACTION FEES        The Extended Market and Small Capitalization Stock
                        Portfolios of Vanguard Index Trust and the European and
                        Pacific Portfolios of Vanguard International Equity
                        Index Fund assess a portfolio transaction fee on
                        purchases of Portfolio shares equal to 1% of the dollar
                        amount invested. The Total Stock Market Portfolio of
                        Vanguard Index Trust assesses a portfolio transaction
                        fee equal to 0.25% of the dollar amount invested. The
                        Emerging Markets Portfolio of Vanguard International
                        Equity Index Fund assess a portfolio transaction fee
                        equal to 2% of the dollar amount invested. The portfolio
                        transaction fees are paid to the respective Portfolio,
                        not to Vanguard. They are not sales charges.
 
                        These fees apply to initial investments in the
                        respective Portfolios and all subsequent purchases
                        (including purchases made by exchange from another
                        Vanguard Fund or from other Portfolios within a Fund),
                        but not to reinvested dividend or capital gains
                        distributions. Portfolio transaction fees are deducted
                        automatically from the amount invested; they cannot be
                        paid separately.
 
                        The purpose of these transaction fees is to allocate
                        transaction costs associated with new purchases to
                        investors making those purchases, thus insulating
                        existing shareholders from those transaction costs.
                        These costs include: (1) brokerage costs; (2) market
                        impact costs -- i.e., the increase in market prices
                        which may result when the Portfolio purchases thinly
                        traded stocks; and, most importantly, (3) the effect of
                        the "bid-ask" spread in the over-the-counter market.
                        (Securities in the over-the-counter market are bought at
                        the "ask" or purchase price, but are valued in the
                        Portfolio at the mean of the "bid" or sale, and "ask"
                        prices.)
 
                                        6
<PAGE>   11
 
                        The fees represent Vanguard's estimate of the brokerage
                        and other transaction costs incurred by the Portfolios
                        in acquiring stocks in their respective markets. Without
                        the fees, the Portfolios, which incur these costs
                        directly, would experience reduced investment
                        performance for all shareholders in each Portfolio. With
                        the fees, the transaction costs of acquiring additional
                        stocks are borne not by all existing shareholders, but
                        by those investors making additional purchases. Because
                        the purchaser, not the Portfolios, bears these costs,
                        the Portfolios are expected to track their respective
                        benchmark indexes more closely.
 
THE EMERGING MARKETS
PORTFOLIO CHARGES A
1% REDEMPTION
TRANSACTION FEE         The Emerging Markets Portfolio of Vanguard
                        International Equity Index Fund also assesses a 1%
                        redemption transaction fee. This 1% charge applies to
                        redemptions or exchanges from the Portfolio. The 1% fee
                        is deducted from redemption or exchange proceeds and is
                        paid directly to the Portfolio, not to Vanguard. It is
                        not a contingent deferred sales charge.
 
EACH PORTFOLIO CHARGES
A $10 ACCOUNT
MAINTENANCE FEE         Each Portfolio assesses an annual account maintenance
                        fee of $10 to allocate part of the fixed costs of
                        maintaining shareholder accounts equally to all
                        accounts. This fee is deducted from each Portfolio's
                        dividend at a rate of $2.50 per quarter for accounts in
                        the 500, Total Stock Market, Value and Growth Portfolios
                        of Vanguard Index Trust, Vanguard Bond Index Fund and
                        Vanguard Balanced Index Fund and $10 annually for
                        accounts in the Extended Market Portfolio of Vanguard
                        Index Trust and the European, Pacific and Emerging
                        Markets Portfolios of Vanguard International Equity
                        Index Fund. See "Dividends, Capital Gains and Taxes" for
                        more information on this fee. The $10 fee amounts to
                        0.33% on a $3,000 investment in a Portfolio, 0.10% on a
                        $10,000 investment, and 0.01% on a $100,000 investment.
 
                        The following example illustrates the expenses that you
                        would incur on a $1,000 investment over various time
                        periods, assuring (1) a 5% annual rate of return and (2)
                        redemption at the end of each period. The example
                        includes the $10 account maintenance fee for each
                        Portfolio; the 1% portfolio transaction fee for the
                        Extended Market and Small Capitalization Stock
                        Portfolios of Vanguard Index Trust and the European and
                        Pacific Portfolios of Vanguard International Equity
                        Index Fund; the 0.25% transaction fee for the Total
                        Stock Market Portfolio of Vanguard Index Trust; and the
                        2% purchase transaction fee and the 1% redemption
                        transaction fee for the Emerging Markets Portfolio of
                        Vanguard International Equity Index Fund.
 
                                        7
<PAGE>   12
 
<TABLE>
<CAPTION>
                                                             1         3         5         10
                                                            YEAR     YEARS     YEARS     YEARS
                                                            ----     -----     -----     -----
                        <S>                                <C>      <C>       <C>       <C>
                        Total Bond Market Portfolio......   $ 12      $36      $  60      $122
                        Short-Term Bond Portfolio........   $ 12      $36      $  60      $122
                        Intermediate-Term Bond
                          Portfolio......................   $ 12      $36      $  60      $122
                        Long-Term Bond Portfolio.........   $ 12      $36      $  60      $122
                        Balanced Index Fund..............   $ 12      $36      $  61      $124
                        500 Portfolio....................   $ 12      $36      $  60      $123
                        Extended Market Portfolio........   $ 22      $46      $  71      $134
                        Total Stock Market Portfolio.....   $ 15      $39      $  63      $127
                        Value Portfolio..................   $ 12      $36      $  61      $124
                        Growth Portfolio.................   $ 12      $36      $  61      $124
                        Small Capitalization Stock
                          Portfolio......................   $ 22      $46      $  70      $132
                        European Portfolio...............   $ 23      $50      $  77      $148
                        Pacific Portfolio................   $ 23      $50      $  77      $148
                        Emerging Markets Portfolio.......   $ 46      $79      $ 114      $204
</TABLE>
 
                        Included in these estimates are account maintenance fees
                        of $10, $30, $50 and $100 for the respective periods
                        shown. The $10 account maintenance fee is a flat charge
                        which does not vary by the size of your investment.
                        Accordingly, for investments larger than $1,000, your
                        total expenses will be substantially lower in percentage
                        terms than this illustration implies.
 
                        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.
- --------------------------------------------------------------------------------
 
FINANCIAL
HIGHLIGHTS              The following financial highlights for a share
                        outstanding throughout each period, insofar as they
                        relate to each of the five years in the period ended
                        December 31, 1993, (September 30, 1993 with respect to
                        the Small Capitalization Stock Portfolio) have been
                        audited by Price Waterhouse LLP independent accountants,
                        whose reports thereon were unqualified. This financial
                        information should be read in conjunction with each
                        Fund's financial statements and notes thereto, which are
                        incorporated by reference in the Statements of
                        Additional Information and in this Prospectus, and which
                        appear, along with the reports of Price Waterhouse LLP,
                        in each Fund's 1993 Annual Report to Shareholders and
                        inserts thereto. The financial highlights for the Small
                        Capitalization Stock Portfolio, formerly Vanguard Small
                        Capitalization Stock Fund, Inc. should be read in
                        conjunction with the Small Capitalization Stock Fund's
                        above-referenced financial statements which are
                        incorporated by reference in the Statement of Additional
                        Information and in this Prospectus, and which appear,
                        along with the report of Price Waterhouse LLP, in the
                        Small Capitalization Stock Fund's 1993 Annual Report to
                        Shareholders. The information on selected per share
                        data and ratios for the six months ended June 30, 1994
                        for each Fund is unaudited and should be read in
                        conjunction with the financial statements appearing in
                        each Fund's June 30, 1994 Semi-Annual Report to
                        Shareholders. For a more complete discussion of each
                        Fund's performance, please see the 1993 Annual Report
                        and the June 30, 1994 Semi-Annual Report of each Fund,
                        which may be obtained free of charge by writing to the
                        Funds or calling our Investor Information Department at
                        1-800-662-7447.
 
                                        8
<PAGE>   13
 
<TABLE>
<CAPTION>
                                                                   500 PORTFOLIO
                   SIX MONTHS  --------------------------------------------------------------------------------------------------
                     ENDED                                          YEAR ENDED DECEMBER 31,
                    JUNE 30,   --------------------------------------------------------------------------------------------------
                    1994***     1993      1992      1991      1990      1989      1988      1987      1986      1985       1984
<S>                <C>         <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>
- ---------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE,
 BEGINNING OF
 PERIOD............   $43.83   $40.97    $39.32    $31.24    $33.64    $27.18    $24.65    $24.27    $22.99    $19.52      $19.70
                     -------    -----    ------    ------    ------    ------    ------    ------    ------    ------      ------
INVESTMENT
 OPERATIONS
 Net Investment
   Income..........      .58     1.13      1.12      1.15      1.17      1.20      1.08       .88       .89       .91         .88
 Net Realized and
   Unrealized Gain
   (Loss) on
   Investments.....    (2.12)    2.89      1.75      8.20     (2.30)     7.21      2.87       .36      3.30      5.08         .30
                     -------    -----     -----     -----     -----     -----     -----     -----     -----     -----       -----
   TOTAL FROM
     INVESTMENT
     OPERATIONS....    (1.54)    4.02      2.87      9.35     (1.13)     8.41      3.95      1.24      4.19      5.99        1.18
- ---------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net
   Investment
   Income..........     (.44)   (1.13)    (1.12)    (1.15)    (1.17)    (1.20)    (1.10)     (.69)     (.89)     (.91)      (.88)
 Distributions from
   Realized Capital
   Gains...........     (.08)    (.03)     (.10)     (.12)     (.10)     (.75)     (.32)     (.17)    (2.02)    (1.61)      (.48)
                    -------     -----     -----     -----     -----     -----     -----    ------     -----     -----       -----
   TOTAL
   DISTRIBUTIONS...     (.52)   (1.16)    (1.22)    (1.27)    (1.27)    (1.95)    (1.42)     (.86)    (2.91)    (2.52)     (1.36)
- ---------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE,
 END OF PERIOD.....   $41.77   $43.83    $40.97    $39.32    $31.24    $33.64    $27.18    $24.65    $24.27    $22.99      $19.52
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN**.....    (3.46)%   9.89%     7.42%    30.22%    (3.32)%   31.36%    16.22%     4.71%    18.06%    31.23%      6.21%
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL
 DATA
Net Assets, End of
 Period
 (Millions)........   $8,433   $8,273    $6,547    $4,345    $2,173    $1,804    $1,055      $826      $485      $394        $290
Ratio of Expenses
 to Average Net
 Assets............      .19%*    .19%      .19%      .20%      .22%      .21%      .22%      .26%      .28%      .28%       .27%
Ratio of Net
 Investment Income
 to Average Net
 Assets............     2.68%*   2.65%     2.81%     3.07%     3.60%     3.62%     4.08%     3.15%     3.40%     4.09%      4.53%
Portfolio Turnover
 Rate..............        7%*+      6%+      4%+       5%+      23%+       8%       10%       15%       29%       36%        14%
</TABLE>
  *Annualized.
 **Total return figures do not reflect the annual account maintenance fee of 
   $10.
***Unaudited.
  +Portfolio turnover rates excluding in-kind redemptions for the period 
   January 1, 1990 to June 30, 1994 were 6%, 2%, 1%, 1%, and 6%, respectively.

 
                                        9
<PAGE>   14
 
<TABLE>
<CAPTION>
                                                                        EXTENDED MARKET PORTFOLIO
                                        SIX MONTHS  -------------------------------------------------------------------------
                                          ENDED                        YEAR ENDED DECEMBER 31,                      DEC. 21,+
                                         JUNE 30,   ------------------------------------------------------------      TO 31,
                                         1994***     1993       1992       1991       1990       1989       1988      1987
<S>                                     <C>         <C>        <C>        <C>        <C>        <C>        <C>      <C>       
- -----------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD....   $19.43   $17.35     $15.82     $11.48     $13.92     $11.60      $9.99     $10.00
                                          -------    -----     ------     ------     ------     ------     ------    -------
INVESTMENT OPERATIONS
 Net Investment Income..................      .13      .23        .24        .25        .30        .26        .34        .03
 Net Realized and Unrealized Gain (Loss)
   on Investments.......................    (1.23)    2.28       1.72       4.54      (2.25)      2.52       1.63       (.04)
                                          -------    -----      -----      -----      -----      -----      -----     ------
   TOTAL FROM INVESTMENT OPERATIONS.....    (1.10)    2.51       1.96       4.79      (1.95)      2.78       1.97       (.01)
- -----------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment Income...       --     (.23)      (.25)      (.25)      (.33)      (.23)      (.20)        --
 Distributions from Realized Capital
   Gains................................     (.14)    (.20)      (.18)      (.20)      (.16)      (.23)      (.16)        --
                                         -------     -----      -----      -----      -----      -----      -----     ------
   TOTAL DISTRIBUTIONS..................     (.14)    (.43)      (.43)      (.45)      (.49)      (.46)      (.36)        --
- -----------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD..........   $18.19   $19.43     $17.35     $15.82     $11.48     $13.92     $11.60      $9.99
- -----------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN**..........................    (5.73)%  14.49%     12.47%     41.85%    (14.05)%    24.10%     19.75%     (0.10)%
- -----------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period (Millions)....     $919     $928       $585       $372       $179       $147        $35         $5
Ratio of Expenses to Average Net
 Assets.................................      .20%*    .20%       .20%       .19%       .23%       .23%       .24%         0%
Ratio of Net Investment Income to
 Average
 Net Assets.............................     1.44%*   1.48%      1.73%      2.14%      2.68%      2.92%      2.90%         0%
Portfolio Turnover Rate.................       23%*     13%         9%        11%         9%        14%        26%         3%
</TABLE>
  *Annualized.
 **Total return figures do not reflect the 1% transaction fee on purchases or 
   the annual account maintenance fee of $10.
***Unaudited.
  +Commencement of Operations.

 
<TABLE>
<CAPTION>
                                TOTAL STOCK
                            MARKET PORTFOLIO***                  GROWTH PORTFOLIO**                    VALUE PORTFOLIO**
                     --------------------------------     -------------------------------    --------------------------------
                     SIX MONTHS     YEAR     MARCH 16+,   SIX MONTHS     YEAR     NOV. 2,    SIX MONTHS     YEAR     NOV. 2,
                       ENDED       ENDED      1992, TO      ENDED       ENDED     1992, TO     ENDED       ENDED     1992, TO
                      JUNE 30,    DEC. 31,    DEC. 31,     JUNE 30,    DEC. 31,   DEC. 31,    JUNE 30,    DEC. 31,   DEC. 31,
                       1994++       1993        1992        1994++       1993       1992       1994++       1993       1992
<S>                  <C>          <C>        <C>          <C>          <C>        <C>        <C>          <C>        <C>      
- ----------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE,
 BEGINNING OF
 PERIOD..............   $11.69     $10.84      $10.00       $10.20      $10.26     $10.00      $11.74      $10.30     $10.00
                       -------     ------     -------      -------     -------    -------    --------     -------    -------
INVESTMENT OPERATIONS
 Net Investment
   Income............      .13        .26         .23          .11         .21        .06         .18         .38        .07
 Net Realized and
   Unrealized Gain
   (Loss)
   on Investments....     (.66)       .88         .84         (.57)       (.06)       .26        (.45)       1.50        .30
                       -------     ------     -------      -------      ------     ------     -------      ------     ------
   TOTAL FROM
     INVESTMENT
     OPERATIONS......     (.53)      1.14        1.07         (.46)        .15        .32        (.27)       1.88        .37
- ----------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net
   Investment
   Income............     (.12)      (.26)       (.23)        (.10)       (.21)      (.06)       (.14)       (.38)      (.07)
 Distributions from
   Realized Capital
   Gains.............       --       (.03)         --           --          --         --        (.11)       (.06)        --
                       -------     ------     -------      -------      ------     ------     -------      ------     ------
   TOTAL
     DISTRIBUTIONS...     (.12)      (.29)       (.23)        (.10)       (.21)      (.06)       (.25)       (.44)      (.07)
- ----------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END
 OF PERIOD...........   $11.04     $11.69      $10.84        $9.64      $10.20     $10.26      $11.22      $11.74     $10.30
- ----------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN.........    (4.58)%    10.62%      10.41%       (4.54)%      1.53%      3.19%      (2.38)%     18.35%      3.70%
- ----------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL
 DATA
Net Assets, End of
 Period (Millions)...     $639       $512        $275          $57         $51        $21        $290        $190        $24
Ratio of Expenses to
 Average Net
 Assets..............      .20%*      .20%        .21%*        .20%*       .20%         0%*       .20%*       .20%         0%*
Ratio of Net
 Investment Income to
 Average
 Net Assets..........     2.31%*     2.31%       2.42%*       2.22%*      2.10%      2.85%*      3.21%*      3.26%      3.46%*
Portfolio Turnover
 Rate................        3%*        1%          3%          33%*        36%         2%         32%*        30%         4%
</TABLE>
   * Annualized.
  ** Total return figures do not reflect the annual account maintenance fee of 
     $10 or applicable portfolio transaction fees.
 *** Total return figures do not reflect the .25% transaction fee on purchases 
     or the annual account maintenance fee of $10.
     Subscription period for the Portfolio was from March 16, 1992, to 
     April 26, 1992, during which time all assets were held in money market 
     instruments. Performance measurement begins on April 27, 1992.
   + Commencement of operations.
  ++ Unaudited.
 
                                       10
<PAGE>   15
 
<TABLE>
<CAPTION>
                                               SMALL CAPITALIZATION STOCK PORTFOLIO(1)
- -------------------------------------------------------------------------------------------------------------------------------
                         OCT. 1,
             FEB. 1 TO   1993 TO                                            YEAR ENDED SEPTEMBER 30,
              JUNE 30,   JAN. 31,     -----------------------------------------------------------------------------------------
                1994**    1994**    1993    1992    1991   1990(2)      1989+    1988     1987      1986      1985      1984
<S>          <C>     <C>     <C>       <C>       <C>       <C>        <C>       <C>       <C>       <C>       <C>       <C>    
- -------------------------------------------------------------------------------------------------------------------------------
NET
ASSET
VALUE,
BEGINNING
 OF
 PERIOD...      $16.24    $16.23  $12.63  $12.03   $8.55    $11.88    $11.96   $15.73   $13.24    $11.68    $13.15    $19.77
                ------    ------  ------  ------   -----    ------    ------   ------   ------    ------    ------    ------
INVESTMENT  
OPERATIONS
Net
Investment
   Income
   (Loss)...       .08       .05     .20     .19     .20       .17       .10      .03     (.04)     (.01)     (.04)      .14
Net
Realized
   and
   Unrealized
   Gain
 (Loss)
   on
   Investments.. (1.48)      .96    3.73     .88    3.60     (3.46)     2.13    (2.59)    4.42      1.57      (.51)    (4.25)
                ------    ------   -----   -----   -----    ------     -----   -----    -----      -----     -----     -----
   TOTAL              
    FROM
    INVESTMENT
    OPERATIONS.. (1.40)     1.01    3.93    1.07    3.80     (3.29)     2.23    (2.56)    4.38      1.56      (.55)    (4.11)
- -------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends
   from
   Net
   Investment
   Income...        --      (.18)   (.18)   (.18)   (.18)     (.04)     (.14)      --       --        --      (.15)       --
 Distributions
   from
   Realized
   Capital
  Gains...          --      (.82)   (.15)   (.29)   (.14)       --     (2.17)   (1.21)   (1.89)       --      (.77)    (2.51)
               -------    ------   -----   -----   -----    ------     -----    -----    -----     -----     -----     ------
   TOTAL
   DISTRIBUTIONS... --     (1.00)   (.33)   (.47)   (.32)     (.04)    (2.31)   (1.21)   (1.89)       --      (.92)    (2.51)
- -------------------------------------------------------------------------------------------------------------------------------
NET
ASSET
VALUE,
 END
 OF
 PERIOD...      $14.84    $16.24  $16.23  $12.63  $12.03     $8.55    $11.88   $11.96   $15.73    $13.24    $11.68    $13.15
- -------------------------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------------------------
TOTAL
RETURN++...      (8.62)%    6.65%  31.60%   9.34%  45.91%   (27.73)%   18.83%  (14.30)%  38.02%    13.33%    (3.67)%  (22.89)%
- -------------------------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL
 DATA
Net
Assets,
 End of
 Period
 (Millions)...     $536    $533   $432   $202      $111       $40        $20      $27      $35       $31       $32       $37
Ratio
 of
 Expenses
 to
 Average
Net
Assets...           .18%*   .18%*  .18%   .18%      .21%      .31%      1.00%     .95%     .92%      .92%     1.00%     1.05%
Ratio
 of
 Net
 Investment
 Income
 (Loss)
 to
Average
Net
Assets...          1.29%*  1.16%* 1.47%  1.65%     2.11%     1.91%       .65%     .24%    (.25)%    (.06)%    (.28)%    1.11%
Portfolio
 Turnover
 Rate...             48%*     5%*   26%    26%       33%       40%       160%      68%      92%       92%      103%      100%
</TABLE>
   * Annualized.
  ** Unaudited.
 (1) Results prior to January 31, 1994, are for the former Vanguard Small 
     Capitalization Stock Fund.
 (2) Adjusted to reflect a 3-for-1 stock split as of February 3, 1990.
   + Prior to September 11, 1989, Schroder Capital Management International 
     provided investment advisory services to the Fund.
     Effective September 11, 1989, The Vanguard Group, Inc. began providing 
     investment advisory services to the Fund on an at-cost basis.
  ++ Total return figures do not reflect the annual account maintenance fees of
     $10 or applicable portfolio transaction fees.

 
                                       11
<PAGE>   16
 
<TABLE>
<CAPTION>
               EMERGING
                MARKETS                  EUROPEAN PORTFOLIO(1)                                PACIFIC PORTFOLIO(1)
               PORTFOLIO   -------------------------------------------------   ---------------------------------------------------
                -------    SIX MONTHS          YEAR ENDED                      SIX MONTHS          YEAR ENDED
               MAY 4+ TO     ENDED            DECEMBER 31,         MAY 1+ TO     ENDED            DECEMBER 31,          MAY 1+ TO
               JUNE 30,     JUNE 30,     ----------------------       DEC. 31,     JUNE 30,  -----------------------     DEC. 31,
                1994***     1994***      1993     1992     1991      1990       1994***      1993     1992      1991      1990
<S>            <C>         <C>          <C>      <C>       <C>     <C>         <C>          <C>      <C>        <C>     <C>
- --------------------------------------------------------------------------------------------------------------------------------
NET ASSET
 VALUE,
 BEGINNING OF
 PERIOD........   $10.00     $11.88      $9.33    $9.92    $9.06    $10.00       $10.13      $7.56     $9.42    $8.56     $10.00
                  -----     -------      -----     ----     ----    ------      -------      -----     -----     ----     ------
INVESTMENT
 OPERATIONS
 Net Investment
   Income......      .03        .16        .17      .25      .26       .16          .04        .06       .05      .05        .05
 Net Realized
   and
   Unrealized
   Gain (Loss)
   on
 Investments...      .54       (.47)      2.55     (.58)     .86      (.94)        1.91       2.62     (1.76)     .86      (1.44)
                  -----     -------      -----     ----     ----    ------      -------      -----     -----     ----     ------
   TOTAL FROM
    INVESTMENT
   OPERATIONS..      .57       (.31)      2.72     (.33)    1.12      (.78)        1.95       2.68     (1.71)     .91      (1.39)
- --------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from
   Net
   Investment
   Income......       --       (.03)      (.17)    (.26)    (.26)     (.16)          --       (.06)     (.05)    (.05)      (.05)
 Distributions
   from
   Realized
   Capital
   Gains.......       --         --         --       --       --        --           --       (.05)     (.10)      --         --
                  -----     -------      -----     ----     ----    ------      -------      -----     -----     ----     ------
   TOTAL
   DISTRIBUTIONS...       --     (.03)    (.17)    (.26)    (.26)     (.16)          --       (.11)     (.15)    (.05)      (.05)
- --------------------------------------------------------------------------------------------------------------------------------
NET ASSET
 VALUE, END OF
 PERIOD........   $10.57     $11.54     $11.88    $9.33    $9.92     $9.06       $12.08     $10.13     $7.56    $9.42      $8.56
- --------------------------------------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN...     5.70%(2)    (2.61)%  29.13%   (3.32)%  12.40%    (7.23)%      19.25%     35.46%   (18.17)%  10.65%    (14.01)%
- --------------------------------------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL
 DATA
Net Assets, End
 of Period
 (Millions)....      $20       $668       $601     $256     $161       $96         $693       $493      $207      $84        $31
Ratio of
 Expenses to
 Average Net
 Assets........       --        .32%*      .32%     .32%     .33%      .40%*        .32%*      .32%      .32%     .32%       .35%*
Ratio of Net
 Investment
 Income to
 Average Net
 Assets........     2.94%*     3.15%*     2.05%    3.05%    3.06%     3.68%*        .80%*      .75%      .92%     .70%      1.02%*
Portfolio
 Turnover
 Rate..........        0%         5%*        4%       1%      15%**       3%          3%*        7%        3%      21%**        2%
</TABLE>
   * Annualized.
  ** Portfolio turnover rates for 1991 excluding in-kind redemptions were 3% 
     for the European Portfolio and 1% for the Pacific Portfolio.
 *** Unaudited.
   + Commencement of operations.
 (1) Total return figures do not reflect the 1% transaction fee on purchases 
     or the annual account maintenance fee of $10.
     Subscription period for Portfolio was May 1, 1990, to June 17, 1990, 
     during which time all assets were held in money market instruments. 
     Performance measurement begins on June 18, 1990.
 (2) Total return does not reflect the 2% transaction fee on purchases, the 1% 
     transaction fee on redemptions, or the annual account maintenance fee of 
     $10.

 
                                       12
<PAGE>   17

 
<TABLE>
<CAPTION>
                                                                   TOTAL BOND MARKET PORTFOLIO
                                 SIX MONTHS --------------------------------------------------------------------------------------
                                   ENDED                              YEAR ENDED DECEMBER 31,
                                  JUNE 30,       ------------------------------------------------------------------    DEC. 9,+
                                   1994**        1993       1992      1991      1990      1989      1988      1987    TO 31, 1986
<S>                              <C>            <C>        <C>        <C>       <C>       <C>       <C>       <C>     <C>
- ----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF
 PERIOD..........................   $10.06       $9.88      $9.99     $9.41     $9.44     $9.05     $9.20     $9.94     $10.00
                                    ------       ------     -----     -----     -----     -----     -----     -----    -----------
INVESTMENT OPERATIONS                     
 Net Investment Income...........     .302        .638       .699      .766      .796      .797      .807      .834       .028
 Net Realized and Unrealized Gain
   (Loss) on Investments.........    (.668)       .300      (.018)     .605     (.030)     .390     (.150)    (.740)     (.060)
                                    ------      ------      -----     -----     -----     -----     -----     -----   -----------
       TOTAL FROM INVESTMENT       
        OPERATIONS...............    (.366)       .938       .681     1.371      .766     1.187      .657      .094      (.032)
- ----------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net
   Investment Income.............    (.302)      (.638)     (.699)    (.766)    (.796)    (.797)    (.807)    (.834)     (.028)
 Distributions from Realized
   Capital
   Gains.........................    (.002)      (.120)     (.092)    (.025)       --        --        --        --         --
                                   -------      ------      -----     -----     -----     -----     -----     -----   ---------
       TOTAL DISTRIBUTIONS.......    (.304)      (.758)     (.791)    (.791)    (.796)    (.797)    (.807)    (.834)     (.028)
- ----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD...    $9.39      $10.06      $9.88     $9.99     $9.41     $9.44     $9.05     $9.20      $9.94
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN(1)..................    (3.69)%      9.68%      7.14%    15.25%     8.65%    13.65%     7.35%     1.14%     (0.21)%
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period
 (Millions)......................   $1,745      $1,540     $1,066      $849      $277      $139       $58       $43         $3
Ratio of Expenses to Average Net
 Assets..........................      .18%*       .18%       .20%      .16%      .21%      .24%      .30%      .14%         0%
Ratio of Net Investment Income to
 Average Net Assets..............     6.28%*      6.24%      7.06%     7.95%     8.60%     8.49%     8.84%     9.01%      6.82%*
Portfolio Turnover Rate..........       50%*++      50%        49%       31%       29%       33%       21%       77%         0%
</TABLE>
   * Annualized.
  ** Unaudited.
 (1) Total return figures do not reflect the annual account maintenance fee of 
     $10.
   + Commencement of operations.
  ++ Portfolio turnover rate excluding in-kind redemptions was 39%.

 
<TABLE>
<CAPTION>
                                                        SHORT-TERM        INTERMEDIATE-TERM        LONG-TERM
                                                      BOND PORTFOLIO       BOND PORTFOLIO        BOND PORTFOLIO
                                                       -------------------------------------------------------
                                                      JANUARY 18 TO         JANUARY 18 TO        JANUARY 18 TO
                                                     JUNE 30, 1994**       JUNE 30, 1994**      JUNE 30, 1994**
<S>                                                  <C>                  <C>                   <C>
- ------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD...............       $10.00               $ 10.00               $10.00
                                                     ------------         ------------          ------------
INVESTMENT OPERATIONS
  Net Investment Income............................         .196                  .213                 .240
  Net Realized and Unrealized Gain (Loss) on
    Investments....................................        (.270)                (.540)               (.790)
                                                     -----------           -----------          -----------
        TOTAL FROM INVESTMENT OPERATIONS...........         .074                 (.327)               (.550)
- ------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
  Dividends from Net Investment Income.............        (.196)                (.213)               (.240)
  Distributions from Realized Capital Gains........           --                    --                   --
                                                     -----------           -----------          -----------
        TOTAL DISTRIBUTIONS........................        (.196)                (.213)               (.240)
- ------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD.....................        $9.73                 $9.46                $9.21
- ------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------
TOTAL RETURN(1)....................................         (.95)%               (3.36)%              (5.61)%
- ------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period (Millions)...............          $59                   $52                   $5
Ratio of Expenses to Average Net Assets............          .18%*                 .18%*                 --
Ratio of Net Investment Income to Average Net
  Assets...........................................         5.38%*                6.43%*               7.42%*
Portfolio Turnover Rate............................          109%*                 117%                 164%*
</TABLE>
  *Annualized.
 **Unaudited.
(1)Total return reflects the period beginning March 1, 1994, the date on which 
   investment operations commenced.  Returns do not reflect the annual account 
   maintenance fee of $10.

 
                                       13
<PAGE>   18
 
<TABLE>
<CAPTION>
                                                                                      VANGUARD BALANCED
                                                                                         INDEX FUND
                                                                                ----------------------------
                                                                                 YEAR ENDED      SEPT. 28, TO
                                                             SIX MONTHS ENDED   DECEMBER 31,       DEC. 31,
                                                             JUNE 30, 1994***       1993             1992
<S>                                                          <C>                <C>              <C>
- ------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF PERIOD.......................       $10.91           $10.31           $10.00
                                                             ------------       ----------       ----------
INVESTMENT OPERATIONS
  Net Investment Income....................................          .19              .39              .08
  Net Realized and Unrealized Gain (Loss) on Investments...         (.67)             .63              .31
                                                             -----------        ---------        ---------
        TOTAL FROM INVESTMENT OPERATIONS...................         (.48)            1.02              .39
- ------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
  Dividends from Net Investment Income.....................         (.16)            (.39)            (.08)
  Distributions from Realized Capital Gains................           --             (.03)              --
                                                             -----------        ---------        ---------
        TOTAL DISTRIBUTIONS................................         (.16)            (.42)            (.08)
- ------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD.............................       $10.27           $10.91           $10.31
- ------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------
TOTAL RETURN**.............................................        (4.44)%          10.00%            3.69%
- ------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period (Millions).......................         $382             $367             $109
Ratio of Expenses to Average Net Assets....................          .20%*            .20%             .22%*
Ratio of Net Investment Income to Average Net Assets.......         3.67%*           3.53%            3.76%*
Portfolio Turnover Rate....................................           18%*             25%              17%

</TABLE>

 *Annualized.
 **Total return figures do not reflect the annual account maintenance fee of 
   $10. Subscription period for portfolio was from September 28, 1992, to 
   November 8, 1992, during which time all assets were held in
   money market instruments. Performance measurement begins on November 9, 1992.
***Unaudited.
 
- --------------------------------------------------------------------------------
 
YIELD AND TOTAL
RETURN                  From time-to-time a Portfolio of the Vanguard Index
                        Funds may advertise its yield and total return. Both
                        yield and total return figures are based on historical
                        earnings and are not intended to indicate future
                        performance. The "total return" of a Portfolio refers to
                        the average annual compounded rates of return over one-,
                        five- and ten-year periods or for the life of the
                        Portfolio (as stated in the advertisement) 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 the net
                        investment income per share earned during a 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 a 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 a Portfolio
                        to maintain its books and records, and so the advertised
                        30-day yield may not fully reflect the income paid to
                        your own account or the yield reported in a Portfolio's
                        reports to shareholders.
- --------------------------------------------------------------------------------
 
                                       14
<PAGE>   19
 
INVESTMENT
OBJECTIVES
                        Vanguard Bond Index Fund, Vanguard Balanced Index Fund,
                        Vanguard Index Trust and Vanguard International Equity
                        Index Fund are each open-end diversified investment
                        companies designed as "index" funds.
- --------------------------------------------------------------------------------
 
BOND INDEX FUND
                     
EACH PORTFOLIO SEEKS 
TO MATCH THE         
INVESTMENT           
PERFORMANCE OF A     
PARTICULAR INVESTMENT
GRADE BOND INDEX.       The Fund consists of four Portfolios, each of which
                        seeks to match the investment results of a particular
                        investment grade bond index through the use of index
                        sampling techniques. The Total Bond Market Portfolio
                        seeks to replicate the performance of a broad market
                        weighted bond index, while the Short-Term Bond,
                        Intermediate-Term Bond and Long-Term Bond Portfolios
                        attempt to replicate the performance of market weighted
                        bond indexes with prescribed maturity standards. There
                        is no assurance that any of the Fund's Portfolios will
                        achieve its stated objective.
- --------------------------------------------------------------------------------
BALANCED INDEX
FUND
                      
THE FUND SEEKS        
TO TRACK THE          
WILSHIRE 5000 AND THE 
LEHMAN BROTHERS         The objective of the Fund is to replicate, with respect
INDEX                   to 60% of its assets, the investment performance of the
                        Wilshire 5000 and, with respect to 40% of its assets,
                        the investment performance of the Lehman Brothers Index.
                        There is no assurance that the Fund will achieve its
                        stated objective.
 
                        The Wilshire 5000 consists of all U.S. common stocks
                        that trade on a regular basis on the New York and
                        American Stock Exchanges and in the NASDAQ
                        over-the-counter market. The Lehman Brothers Index
                        measures the total return (capital change plus income)
                        provided by a universe of fixed income securities,
                        weighted by market value. The securities included in the
                        index generally have an outstanding market value of at
                        least $25 million, are of investment grade quality and
                        are readily available in the marketplace.
- --------------------------------------------------------------------------------
 
INDEX TRUST
                     
EACH PORTFOLIO SEEKS 
TO MATCH THE         
INVESTMENT           
PERFORMANCE OF A     
PARTICULAR STOCK        The Trust consists of six Portfolios, each of which
MARKET INDEX            seeks to provide investment results that correspond to a
                        particular stock market index. The correlation between
                        the performance of each of the Trust's Portfolio's and
                        the respective index that each Portfolio attempts to
                        match is expected to be at least 0.95. The 500, Extended
                        Market, Total Stock Market and Small Capitalization
                        Stock Portfolios attempt to replicate the investment
                        performance of broad market indexes, while the Value and
                        Growth Portfolios attempt to replicate indexes which
                        possess certain "value" and "growth" investment
                        characteristics.
 
                        - The 500 PORTFOLIO seeks to replicate the aggregate
                          price and yield performance of the Standard & Poor's
                          500 Composite Stock Price Index (the "S&P 500 Index"),
                          an index which emphasizes large-capitalization
                          companies.
 
                        - The EXTENDED MARKET PORTFOLIO seeks to replicate the
                          aggregate price and yield performance of the Wilshire
                          4500 Index, an index which consists of more than 5,000
                          medium- and small-capitalization companies that are 
                          not included in the S&P 500 Index.
 
                        - The TOTAL STOCK MARKET PORTFOLIO seeks to replicate
                          the aggregate price and yield performance of the
                          Wilshire 5000 Index, an index
 
                                       15
<PAGE>   20
 
                          which consists of all U.S. stocks that trade on a
                          regular basis on either the New York or American Stock
                          Exchange or the NASDAQ over-the-counter market. These
                          stocks include the large-capitalization companies of
                          the S&P 500 Index, with the exception of Royal Dutch
                          and Unilever, N.V., which trade on the New York Stock
                          Exchange as ADR's, as well as the medium- and
                          small-capitalization companies of the Wilshire 4500
                          Index.
 
                        - The SMALL CAPITALIZATION STOCK PORTFOLIO seeks to
                          replicate the aggregate price and yield performance of
                          the Russell 2000 Small Stock Index (the "Russell
                          2000"), a broadly diversified small-capitalization
                          stock index consisting of approximately 2,000 common
                          stocks.
 
                        - The VALUE PORTFOLIO seeks to replicate the aggregate
                          price and yield performance of the S&P/BARRA Value
                          Index, an index which includes stocks in the S&P 500
                          Index with lower than average ratios of market price
                          to book value. These types of stocks are often
                          referred to as "value" stocks.
 
                        - The GROWTH PORTFOLIO seeks to replicate the aggregate
                          price AND yield performance of the S&P/BARRA Growth
                          Index, an index which includes stocks in the S&P 500
                          Index with higher than average ratios of market price
                          to book value. These types of stocks are often
                          referred to as "growth" stocks.
 
                        There is no assurance that the Portfolios will achieve
                        their stated objectives.
- --------------------------------------------------------------------------------
 
INTERNATIONAL
EQUITY INDEX FUND
                    
EACH PORTFOLIO SEEKS
TO MATCH THE        
INVESTMENT          
PERFORMANCE OF ITS      The Fund consists of three Portfolios, each of which
RESPECTIVE INDEX        seeks to match the investment results of a Morgan
                        Stanley Capital International Index. The European
                        Portfolio seeks to replicate the aggregate price and
                        yield performance of the Morgan Stanley Capital
                        International-Europe (Free) Index ("MSCI-Europe
                        (Free)"), a diversified, capitalization weighted index
                        comprised of companies located in fourteen European
                        countries. The Pacific Portfolio seeks to replicate the
                        aggregate price and yield performance of the Morgan
                        Stanley Capital International-Pacific Index
                        ("MSCI-Pacific"), a diversified, capitalization weighted
                        index consisting of companies located in Australia,
                        Japan, Hong Kong, New Zealand, Singapore and Malaysia.
                        There is no assurance that either Portfolio will achieve
                        its stated objective.
 
                        By holding both the European and Pacific Portfolios in
                        appropriate proportions, an investor may create an
                        aggregate portfolio designed to approximate the total
                        return (income plus capital change) of the Morgan
                        Stanley Capital International-Europe, Australia and Far
                        East (Free) Index ("EAFE Free"), a broadly diversified
                        international index consisting of more than 1,000 equity
                        securities of companies located outside of the United
                        States. As of December, 31, 1993, the MSCI-Pacific Index
                        represented approximately 52% of the market
                        capitalization of EAFE (Free), while the MSCI-Europe
                        (Free) Index represented the remaining 48%.
 
                                       16
<PAGE>   21
 
                        The Emerging Markets Portfolio seeks, with respect to
                        95% of assets, to provide investment results that
                        parallel the Morgan Stanley Capital International
                        ("MSCI")-Select Emerging Markets Free Index ("Index").
                        The MSCI-Select Emerging Markets Free Index is a
                        diversified index consisting of common stocks located in
                        12 countries. This Index provides broader
                        diversification and more liquidity than other
                        "published" indexes and also takes into consideration
                        the trading capabilities of foreigners in emerging stock
                        market countries.
 
                        The Fund is neither sponsored by nor affiliated with
                        Morgan Stanley Capital International.
 
                        The investment objectives of each Portfolio of Vanguard
                        Bond Index Fund and Vanguard Index Trust are fundamental
                        and so cannot be changed without the approval of a
                        majority of a Portfolio's shareholders.
 
                        The investment objectives of Vanguard Balanced Index
                        Fund and each Portfolio of Vanguard International Equity
                        Index Fund are not fundamental and may be changed by the
                        Board of Directors without shareholder approval.
                        However, shareholders would be notified prior to a
                        material change.
- --------------------------------------------------------------------------------
 
INVESTMENT
POLICIES
                   
EACH FUND USES     
A "PASSIVE"             The Funds are not managed according to traditional
INVESTMENT APPROACH     methods of "active" investment management, which involve
                        the buying and selling of securities based upon
                        economic, financial and market analysis and investment
                        judgment. Instead, the Funds, utilizing a "passive" or
                        indexing investment approach, attempt to approximate the
                        investment performance of their respective indexes
                        through statistical procedures. The Funds are managed
                        without regard to tax ramifications.
 
                        The investment policies of the Funds 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.
- --------------------------------------------------------------------------------
 
BOND INDEX FUND
                      
EACH PORTFOLIO INVESTS
IN FIXED INCOME         Each Portfolio will invest in a group of fixed income
SECURITIES              securities selected from its respective index which,
                        when taken together, are expected to perform similarly
                        to the index as a whole. This sampling technique is
                        expected to enable each Portfolio to track the dividend
                        income and price movements of its respective index,
                        while minimizing brokerage, custodial and accounting
                        costs.
 
                        The TOTAL BOND MARKET PORTFOLIO will invest in a
                        portfolio of fixed income securities selected to match
                        the Lehman Brothers Aggregate Bond Index (the "Aggregate
                        Bond Index"). The Aggregate Bond Index is a broad market
                        weighted index which encompasses three major classes of
                        investment grade fixed income securities in the United
                        States: U.S. Treasury and agency securities, corporate
                        bonds, and mortgage-backed securities, with maturities
                        greater than one year.
 
                        The SHORT-TERM BOND PORTFOLIO will invest in a portfolio
                        of fixed income securities selected to match the Lehman
                        Brothers Mutual Fund Short
 
                                       17
<PAGE>   22
 
                        (1-5) Government/Corporate Index (the "Short-Term
                        Index"). The Short-Term Index is a market weighted index
                        which encompasses two major classes of investment grade
                        fixed income securities: U.S. Treasury and agency
                        securities and corporate bonds, all with maturities
                        between 1 and 5 years.
 
                        The INTERMEDIATE-TERM BOND PORTFOLIO will invest in a
                        portfolio of fixed income securities selected to match
                        the Lehman Brothers Mutual Fund Intermediate (5-10)
                        Government/Corporate Index (the "Intermediate-Term
                        Index"). The Intermediate-Term Index is a market
                        weighted index which encompasses two major classes of
                        investment grade fixed income securities: U.S. Treasury
                        and agency securities and corporate bonds, all with
                        maturities between 5 and 10 years.
 
                        The LONG-TERM BOND PORTFOLIO will invest in a portfolio
                        of fixed income securities selected to match the Lehman
                        Brothers Mutual Fund Long (10+) Government/Corporate
                        Index (the "Long-Term Index"). The Long-Term Index is a
                        market weighted index which encompasses two major
                        classes of investment grade fixed income securities:
                        U.S. Treasury and agency securities and corporate bonds,
                        all with maturities greater than 10 years.
 
                        Each Portfolio will invest 80% or more of its assets in
                        securities included in its respective index. As of
                        December 31, 1993, the major classes of fixed income
                        securities represented the following proportions of the
                        respective indexes total market values:
 
<TABLE>
<CAPTION>
                                                  AGGREGATE    SHORT-TERM   INTERMEDIATE-   LONG-TERM
                                                  BOND INDEX     INDEX       TERM INDEX       INDEX
                           <S>                    <C>          <C>          <C>             <C>
                           --------------------------------------------------------------------------
                           U.S. Treasury and
                             agency securities       53%          88%          63%            68%
                           Corporate bonds           19%          12%          37%            32%
                           Mortgage-backed
                             securities              28%          0%            0%             0%
                           Dollar-weighted
                             Average Maturity
                             (Years)               8.9 yrs      2.9 yrs      7.5 yrs        23.4 yrs
</TABLE>
 
                        The Portfolios of the Fund may, from time to time,
                        substitute one type of investment grade bond for
                        another. For instance, a Portfolio may hold more
                        short-term corporate bonds (fewer short U.S. Treasury
                        bonds) than represented in the Index so as to increase
                        income. This corporate substitution strategy will entail
                        the assumption of additional credit risk; however,
                        substantial diversification within the corporate sector
                        should moderate issue-specific credit risk. In addition,
                        current investment policy restricts corporate
                        substitutions to issues with less than 4 years remaining
                        to maturity and in aggregate no more than 15% of net
                        assets. Overall, credit risk is expected to be very low
                        for each of the Portfolios.
 
                        Fixed Income Securities will be primarily of investment
                        grade quality-- i.e., those rated at least Baa3 by
                        Moody's Investors Service, Inc. or BBB- by Standard &
                        Poor's Corporation. Securities rated Baa or BBB are
                        considered as medium grade obligations. Interest
                        payments and princi-
 
                                       18
<PAGE>   23
 
                        pal are regarded as adequate for the present but certain
                        protective elements found in higher rated bonds may be
                        lacking. Such bonds lack outstanding investment
                        characteristics and, in fact, have speculative
                        characteristics as well.
 
                        In its efforts to duplicate the investment performance
                        of the Index, each Portfolio will invest in fixed income
                        securities in accordance with its relative proportion of
                        the Index's total market value. For the Total Bond
                        Market Portfolio, these investments will include U.S.
                        Treasury and agency securities, mortgage-backed
                        securities and corporate debt. For the Short-Term Bond,
                        Intermediate-Term Bond and Long-Term Bond Portfolios,
                        these investments include U.S. Treasury and agency
                        securities and corporate debt. The Portfolios may invest
                        in U.S. Treasury bills, notes and bonds and other "full
                        faith and credit" obligations of the U.S. Government.
                        The Portfolios may also invest in U.S. Government agency
                        securities, which are debt obligations issued or
                        guaranteed by agencies or instrumentalities of the U.S.
                        Government. Such "agency" securities may not be backed
                        by the "full faith and credit" of the U.S. Government.
                        Such U.S. Government agencies may include the Federal
                        Farm Credit Banks, the Resolution Trust Corporation and
                        in the case of the Total Bond Market Portfolio, the
                        Government National Mortgage Association. Even though
                        they all carry top (AAA) credit ratings, "agency"
                        obligations are not explicitly guaranteed by the U.S.
                        Government and so are perceived as somewhat riskier than
                        comparable Treasury bonds.
 
                        Each Portfolio may also invest up to 20% of its assets
                        in short-term money market instruments, and may invest
                        in bond (interest rate) futures contracts and options to
                        a limited extent. Such securities will be held only to
                        invest uncommitted cash balances, to maintain liquidity
                        to meet shareholder redemptions, or to minimize trading
                        costs. The Portfolios will not invest in such securities
                        as part of a temporary defensive strategy (such as
                        altering the aggregate maturity of a Portfolio) to
                        protect the Fund against potential bond market declines.
                        Each Portfolio intends to remain fully invested, to the
                        extent practicable, in a pool of securities which will
                        duplicate the investment characteristics of the
                        respective index. See "Implementation of Policies" for a
                        description of other investment practices of the Fund.
- --------------------------------------------------------------------------------
 
BALANCED INDEX
FUND
                   
THE FUND INVESTS IN     Under normal circumstances, the Fund will invest 60% of
STOCKS AND BONDS        its net assets in a portfolio of common stocks selected
                        to track the Wilshire 5000 and 40% of its net assets in
                        a portfolio of investment-grade bonds designed to track
                        the Lehman Brothers Index. The Fund may also invest in
                        certain short-term fixed income securities as cash
                        reserves, although cash and cash equivalents are
                        normally expected to represent less than 1% of the
                        Fund's assets.
 
                        The Fund's common stock portfolio is designed to have
                        investment characteristics that parallel those of the
                        Wilshire 5000. The Fund is expected to invest in
                        approximately 500 of the largest securities in the
                        Wilshire 5000 as measured by market capitalization and a
                        representa-
 
                                       19
<PAGE>   24
 
                        tive sample of the remainder. Typically, the Fund will
                        hold between 950 and 1,050 stocks, which are selected
                        primarily on the basis of market capitalization and
                        industry weightings.
 
                        The Fund's bond portfolio is designed to have investment
                        characteristics that parallel those of the Lehman
                        Brothers Index. The Fund will invest in a representative
                        sample of fixed income securities in the Lehman Brothers
                        Index, which, taken together, are expected to perform
                        similarly to the Index.
 
                        The Fund may also invest up to 30% of its assets in
                        stock or bond futures contracts and options in order to
                        invest uncommitted cash balances, to maintain liquidity
                        to meet shareholder redemptions, or to minimize trading
                        costs. The Fund will not invest in futures contracts,
                        options, or cash reserves as part of a temporary
                        defensive strategy, such as lowering the Fund's
                        investment allocation in common stocks to protect
                        against potential stock market declines. The Fund
                        intends to remain fully invested, to the extent
                        practicable, in a pool of securities which will
                        duplicate the investment characteristics of the Wilshire
                        5000 and Lehman Brothers Indexes. See "Implementation of
                        Policies" for a description of these and other
                        investment practices of the Fund.
- --------------------------------------------------------------------------------
 
INDEX TRUST
                  
ALL SIX PORTFOLIOS
INVEST IN               The 500, Value, and Growth Portfolios each invest in all
COMMON STOCKS           the stocks included in each of their respective indexes
                        in approximately the same proportion as they are
                        represented in the index. The Extended Market, Total
                        Stock Market, and Small Capitalization Stock Portfolios
                        invest in statistically selected samples of the stocks
                        included in each of their respective indexes. This
                        sampling technique is expected to enable each portfolio
                        to track the price movements of its respective index,
                        while minimizing the brokerage, custodial, and
                        accounting costs.
 
                        The 500 PORTFOLIO invests in all 500 stocks in the S&P
                        500 Index in approximately the same proportions as they
                        are represented in the Index.
 
                        The EXTENDED MARKET PORTFOLIO invests in a statistically
                        selected sample of the more than 5,000 stocks included
                        in the Wilshire 4500 Index. Typically, the Portfolio
                        invests in 1,400 to 1,700 stocks. Stocks are selected
                        for inclusion in the Portfolio based primarily on market
                        capitalization and industry weightings. The Portfolio is
                        constructed to have aggregate investment characteristics
                        similar to those of the Wilshire 4500 Index.
 
                        The TOTAL STOCK MARKET PORTFOLIO invests in a
                        statistically selected sample of the more than 6,000
                        stocks included in the Wilshire 5000 Index. Typically,
                        the Portfolio invests in approximately 1,700 stocks.
                        Stocks are selected for inclusion in the Portfolio based
                        primarily on market capitalization and industry
                        weightings. The Portfolio is constructed to have
                        aggregate investment characteristics similar to those of
                        the Wilshire 5000 Index.
 
                        The SMALL CAPITALIZATION STOCK PORTFOLIO invests in a
                        statistically selected sample of the approximately 2,000
                        stocks included in the
 
                                       20
<PAGE>   25
 
                        Russell 2000 Index. Typically, the Portfolio invests in
                        approximately 1,000 stocks. Stocks are selected for
                        inclusion in the Portfolio based on their contribution
                        to the Portfolio's market capitalization, industry
                        weightings and other fundamental characteristics such as
                        price-earnings ratios, dividend yields, price-to-book
                        ratios and financial leverage. The stocks held by the
                        Portfolio are weighted to make the Portfolio's aggregate
                        investment characteristics similar to those of the
                        Russell 2000 Index as a whole.
 
                        The VALUE PORTFOLIO invests in all of the common stocks
                        included in the S&P/BARRA Value Index in approximately
                        the same proportions as they are represented in the
                        Index. As of December 31, 1993, the S&P/BARRA Value
                        Index included 310 of the stocks that make up the S&P
                        500 Index, and 50% of the total market value of the
                        Index.
 
                        The GROWTH PORTFOLIO invests in all of the common stocks
                        included in the S&P/BARRA Growth Index in approximately
                        the same proportions as they are represented in the
                        Index. As of December 31, 1993, the S&P/BARRA Growth
                        Index included 190 of the stocks that make up the S&P
                        500 Index, and 50% of the total market value of the
                        Index.
 
ALL SIX PORTFOLIOS
ATTEMPT TO REMAIN
FULLY INVESTED          Each Portfolio attempts to remain fully invested in
                        common stocks. Under normal circumstances each Portfolio
                        will invest at least 95% of its assets in the common
                        stocks of its respective index and futures contracts and
                        options. Each Portfolio may invest in certain short-term
                        fixed income securities as cash reserves, although cash
                        or cash equivalents are normally expected to represent
                        less than 1% of each Portfolio's assets. Each Portfolio
                        may also invest up to 20% of its assets in stock futures
                        contracts and options in order to invest uncommitted
                        cash balances, to maintain liquidity to meet shareholder
                        redemptions, or to minimize trading costs. The
                        Portfolios will not invest in cash reserves, futures
                        contracts or options as part of a temporary defensive
                        strategy, such as lowering a Portfolio's investment in
                        common stocks to protect against potential stock market
                        declines. The Portfolios intend to remain fully
                        invested, to the extent practicable, in a pool of
                        securities which will duplicate the investment
                        characteristics of their respective indexes. See
                        "Implementation of Policies" for a description of these
                        and other investment practices of the Trust.
- --------------------------------------------------------------------------------
 
INTERNATIONAL
EQUITY INDEX FUND
                      
EACH PORTFOLIO        
INVESTS IN              Each of the three Portfolios invest in statistically
INTERNATIONAL STOCKS    selected samples of the stocks included in each of their
                        respective indexes. This sampling technique is expected
                        to enable each portfolio to track the price movements of
                        its respective index, while minimizing the brokerage,
                        custodial, and accounting costs.
 
                        The EUROPEAN PORTFOLIO invests in a statistically
                        selected sample of approximately 575 stocks included in
                        the MSCI-Europe (Free) Index, an index of equity
                        securities of companies located in fourteen European
                        countries. Three countries, the United Kingdom, Germany
                        and France, dominate MSCI-Europe (Free), with 38%, 14%,
                        and 14% of the market
 
                                       21
<PAGE>   26
 
                        capitalization of the Index, respectively, as of
                        December 31, 1993. The 11 other countries are
                        individually much less significant to the Index and,
                        consequently, the Portfolio. The "Free" Index includes
                        only shares that U.S. investors are "free" to purchase.
                        Specifically, the Index excludes restricted shares in
                        Finland, Norway, Sweden and Switzerland.
 
                        The PACIFIC PORTFOLIO invests in a statistically
                        selected sample of the more than 425 stocks included in
                        the MSCI-Pacific Index, an index of equity securities of
                        Pacific Basin companies. The MSCI-Pacific Index is
                        dominated by the Japanese stock market, which
                        represented 75% of the market capitalization of the
                        Index as of December 31, 1993.
 
                        The European and Pacific Portfolios are each expected to
                        invest in approximately 250 stocks or more. Stocks are
                        selected for inclusion in each Portfolio based on
                        country, market capitalization, industry weightings, and
                        fundamental characteristics such as return variability,
                        earnings valuation, and yield. Each of the two
                        Portfolios is constructed to have aggregate investment
                        characteristics similar to those of its respective
                        index. In order to parallel the performance of its
                        respective index, each Portfolio will invest in each
                        country in approximately the same percentage as the
                        country's weight in the index.
 
                        Each of the two Portfolio's policy is to remain fully
                        invested in common stocks. Under normal circumstances at
                        least 80% of the assets of each Portfolio will be
                        invested in stocks that are represented in its
                        respective index. Each Portfolio may invest in certain
                        short-term fixed income securities such as cash
                        reserves, although cash or cash equivalents are normally
                        expected to represent less than 1% of each Portfolio's
                        assets. Each Portfolio may also invest up to 50% of its
                        assets in stock futures contracts, options, and warrants
                        in order to invest uncommitted cash balances, maintain
                        liquidity to meet shareholder redemptions, or minimize
                        trading costs.
 
                        The European and Pacific Portfolios will not invest in
                        cash reserves, futures contracts, options or warrants as
                        part of a temporary defensive strategy, such as lowering
                        a Portfolio's investment in common stocks, to protect
                        against potential stock market declines. The Portfolios
                        intend to remain fully invested, to the extent
                        practicable, in a pool of securities which will
                        approximate the investment characteristics of their
                        respective indexes. The Portfolios may also enter into
                        forward foreign currency exchange contracts in order to
                        maintain the same currency exposure as their respective
                        indexes, but not as part of a defensive strategy to
                        protect against fluctuations in exchange rates.
 
                        The EMERGING MARKETS PORTFOLIO invests in a
                        statistically selected sample of approximately 300
                        stocks included in the MSCI-Select Emerging Markets Free
                        Index, an index of equity securities of companies
                        located in the countries of 12 emerging markets. Three
                        countries, Malaysia, Mexico and Hong Kong represent a
                        majority of the MSCI-Select Emerging Markets Free Index,
                        with 20%, 19% and 15% of the market capitalization of
                        the Index, respectively, as of December 31, 1993.
 
                                       22
<PAGE>   27
 
                        The Index includes only shares that U.S. investors are
                        "free" or allowed by law, to purchase and sell and that
                        have sufficient trading liquidity.
 
                        The Portfolio is expected to invest in approximately 300
                        stocks. Stocks are selected for inclusion in the
                        Portfolio in order to form a statistically
                        representative sample corresponding to the MSCI-Select
                        Emerging Markets Free Index. The Portfolio is
                        constructed to have aggregate investment characteristics
                        (based on country, market capitalization and industry
                        weightings), fundamental characteristics (such as return
                        variability, earnings valuation and yield) and liquidity
                        measures, similar to those of its Index.
 
                        The Portfolio's policy is to remain 95% invested in
                        common stocks.  The remaining 5% of the Portfolio will 
                        be invested in cash reserves in order to maintain a 
                        higher degree of portfolio liquidity to meet daily 
                        redemption requests.
 
                        Under normal circumstances at least 80% of the assets of
                        the Portfolio will be invested in stocks that are
                        represented in the Index and futures contracts and
                        options thereon. The Portfolio may also invest up to 50%
                        of its assets in stock futures contracts, options,
                        warrants, convertible securities or swap agreements in
                        order to invest uncommitted cash balances, maintain
                        liquidity to meet shareholder redemptions, or minimize
                        trading costs.
 
                        See "Implementation of Policies" for a description of
                        these and other investment practices of the Portfolios.
- --------------------------------------------------------------------------------
 
INVESTMENT
RISKS

EACH PORTFOLIO IS
SUBJECT TO MARKET RISK  As mutual funds investing primarily in common stocks,
                        Vanguard Balanced Index Fund and the Portfolios of
                        Vanguard Index Trust and Vanguard International Equity
                        Index Fund are subject to market risk-- i.e., the
                        possibility that common stock prices will decline over
                        short or even extended periods. Both U.S. and foreign
                        stock markets tend to be cyclical, with periods when
                        stock prices generally rise and periods when prices
                        generally decline.
 
                        From 1926 to 1993, common stocks, as measured by the S&P
                        500 Index, have provided an annual total return (capital
                        appreciation plus dividend income), on average, of
                        +12.3%. Average return may not be useful for forecasting
                        future returns in any particular period, as stock
                        returns are quite volatile from year-to-year.
- --------------------------------------------------------------------------------
 
                                       23
<PAGE>   28
 
INDEX TRUST

THE EXTENDED MARKET,
TOTAL STOCK MARKET
AND SMALL
CAPITALIZATION STOCK
PORTFOLIOS MAY EXHIBIT
GREATER VOLATILITY      Historically, medium- and small-capitalization stocks
                        have been more volatile in price than the
                        larger-capitalization stocks included in the S&P 500
                        Index. Among the reasons for the greater price
                        volatility of these securities are the less certain
                        growth prospects of smaller firms, the lower degree of
                        liquidity in the markets for such stocks, and the
                        greater sensitivity of medium- and small-size companies
                        to changing economic conditions. Besides exhibiting
                        greater volatility, medium- and small-size company  
                        stocks may, to a degree, fluctuate independently of 
                        larger company stocks. Medium- and small-size company 
                        stocks may decline in price as large company stocks 
                        rise, or rise in price as large company stocks decline.
                        Medium- and small-size company stocks constitute the 
                        investments of the Extended Market Portfolio while the 
                        Small Capitalization Stock Portfolio is composed 
                        primarily of small-size company stocks. Investors in 
                        the Portfolios should therefore expect that the 
                        Extended Market and Small Capitalization Stock 
                        Portfolios will be more volatile than, and may 
                        fluctuate independently of, the 500 Portfolio.
 
                        Similarly, medium- and small-size company stocks
                        constituted approximately 33% of the net assets of the
                        Total Stock Market Portfolio on December 31, 1993.
                        Investors in the Portfolio should therefore anticipate
                        somewhat greater price volatility in the Total Stock
                        Market Portfolio relative to the 500 Portfolio.
 
THE VALUE AND
GROWTH PORTFOLIOS
MAY FLUCTUATE
INDEPENDENTLY           Stocks that emphasize particular investment
                        characteristics, such as "value" and "growth," may
                        fluctuate divergently from the broad market as
                        represented by the S&P 500 Index, and may also
                        demonstrate greater volatility over short or extended
                        periods relative to the broad market.
 
                        The S&P/BARRA Value Index maintains a lower
                        price-to-book ratio and historically has had a higher
                        yield than the S&P 500 Index, while the S&P/BARRA Growth
                        Index maintains a higher price-to-book and historically
                        has had a lower yield than the S&P 500 Index. Because of
                        these investment characteristics, the S&P/BARRA Value
                        Index has exhibited somewhat less short-term volatility
                        than the S&P 500 Index, while the S&P/BARRA Growth Index
                        has displayed somewhat greater short-term volatility
                        than the S&P 500 Index from 1975 through 1993. However,
                        as stated above, both Indexes may be more volatile than
                        the S&P 500 Index over short or extended periods. The
                        Indexes have been in existence since May, 1992.
                        Historical performance data was generated by BARRA by
                        constructing the S&P/BARRA Value and Growth Indexes from
                        actual S&P 500 Index holdings.
- --------------------------------------------------------------------------------
 
INTERNATIONAL
EQUITY INDEX FUND

INTERNATIONAL STOCKS
MAY EXHIBIT GREATER
VOLATILITY THAN
U.S. STOCKS             Investments in foreign stock markets can be as volatile,
                        if not more volatile, than investments in U.S. markets.
 
                        Over the period from 1970 to 1993 the MSCI-Europe Index
                        has provided an annual total return, on average, of
                        +14.0%, and the MSCI-Pacific Index has provided an
                        annual total return, on average of +18.9%. By
                        comparison, the average annual total return of U.S.
                        stocks during this same period was +12.3% (as measured
                        by the Standard & Poor's 500
 
                                       24
<PAGE>   29
 
                        Composite Stock Price Index). Note, however, that the
                        period from 1970 to 1993 was a very favorable one for
                        foreign stock market investing. The figures on total
                        return and stock market volatility are provided here
                        only as a guide to potential market risk, and may not be
                        useful for forecasting future returns in any particular
                        period.
 
THE JAPANESE STOCK
MARKET IS A MAJOR
COMPONENT OF THE
PACIFIC INDEX           Investors should realize that Japanese securities
                        comprised 75% of the MSCI-Pacific Index as of December
                        31, 1993, and that therefore stocks of Japanese
                        companies will represent a correspondingly large
                        component of the Pacific Portfolio's investment assets.
                        Such a large investment in the Japanese stock market may
                        entail a higher degree of risk than with more
                        diversified international portfolios, especially
                        considering that by fundamental measures of corporate
                        valuation, such as its high price-earnings ratios and
                        low dividend yields, the Japanese market as a whole may
                        appear expensive relative to other world stock markets.
 
STOCKS FROM THREE
COUNTRIES DOMINATE
THE EUROPE (FREE)
INDEX                   Stocks from the United Kingdom, Germany and France
                        comprised 38%, 14% and 14% of the MSCI-Europe (Free)
                        Index, respectively, as of December 31, 1993. The
                        remaining 11 countries in the MSCI-Europe (Free) Index
                        have much less significant capitalization weightings in
                        the Index and will therefore have much less impact on
                        the total return of the Index and the European
                        Portfolio.
 
EMERGING MARKETS
MAY EXHIBIT GREATER
VOLATILITY THAN
DEVELOPED MARKETS       Emerging markets, such as those invested in by the
                        Emerging Markets Portfolio, are associated with
                        substantial investment risks. These risks include market
                        volatility, investment illiquidity, currency risk,
                        political instability and unexpected changes in economic
                        policy including capital controls, expropriation, taxes
                        and hyper-inflation.
 
                        Investors should be aware that emerging markets can be
                        substantially more volatile than both U.S. and more
                        developed foreign markets. For example, from 1989-1993,
                        the average positive monthly return for the Wilshire
                        5000 Index, a broad measure of the U.S. equity market
                        was 3.3%. The average negative monthly return for the
                        Wilshire 5000 Index was -2.6%. In contrast, from
                        1989-1993, the average positive monthly return of the
                        Morgan Stanley Capital International Emerging Markets
                        Free Index, a widely quoted emerging market benchmark,
                        was 5.9%; while the average negative monthly return was
                        -4.8%.
 
INVESTMENT ILLIQUIDITY
RISK                    Volatility in emerging markets may be exacerbated by
                        illiquidity. Average daily trading volume in all of the
                        emerging markets combined is a small fraction of the
                        average daily volume of the U.S. market. Small trading
                        volumes may result in investors being forced to purchase
                        securities at substantially higher prices than the
                        current market, or sell securities at much lower prices
                        than the current market.
 
                                       25
<PAGE>   30
 
INTERNATIONAL STOCKS
ALSO EXPOSE INVESTORS
TO CURRENCY AND OTHER
RISKS                   For U.S investors, the returns of foreign investments,
                        such as those held by the three Portfolios are
                        influenced by not only the returns on foreign common
                        stocks themselves, but also by the returns on the
                        currencies in which the stocks are denominated. Currency
                        risk is the risk that changes in foreign exchange rates
                        will affect, favorably or unfavorably, the value of
                        foreign securities held by a Portfolio. 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 on
                        foreign stocks will be enhanced. Currency risk in
                        emerging markets may be exacerbated by unexpected
                        exchange rate devaluations.
 
                        Other risks and considerations of international
                        investing include: differences in accounting, auditing
                        and financial reporting standards; generally higher
                        transaction costs on foreign portfolio transactions;
                        small trading volumes and generally lower liquidity of
                        foreign stock markets, which may result in greater price
                        volatility; foreign withholding taxes payable on a
                        Portfolio's foreign securities, which may reduce
                        dividend income payable to shareholders; the possibility
                        of expropriation or confiscatory taxation; adverse
                        change in investment or exchange control regulations;
                        difficulty in obtaining a judgement from a foreign
                        court; political instability which could affect U.S.
                        investment in foreign countries; and potential
                        restriction on the flow of international capital.
- --------------------------------------------------------------------------------
 
BOND INDEX FUND

THE PORTFOLIOS ARE
SUBJECT TO INTEREST
RATE RISK               INTEREST RATE RISK is the potential for fluctuations in
                        bond prices due to changing interest rates. As a rule,
                        bond prices vary inversely with interest rates. If
                        interest rates rise, bond prices generally decline; if
                        interest rates fall, bond prices generally rise. In
                        addition, for a given change in interest rates,
                        longer-maturity bonds fluctuate more in price than
                        shorter-maturity bonds. To compensate investors for
                        these larger fluctuations, longer-maturity bonds usually
                        offer higher yields than shorter-maturity bonds, other
                        factors, including credit quality, being equal.
 
                        These basic principles of bond prices also apply to U.S.
                        Government securities. A security backed by the "full
                        faith and credit" of the U.S. Government is guaranteed
                        only as to its stated interest rate and face value at
                        maturity, not its current market price. Just like other
                        fixed income securities, government-guaranteed
                        securities will fluctuate in value when interest rates
                        change.
 
                        The TOTAL BOND MARKET and INTERMEDIATE-TERM BOND
                        PORTFOLIOS maintain an intermediate-term average
                        weighted maturity, and are therefore subject to a
                        moderate to high level of interest rate risk. Interest
                        rate risk for the SHORT-TERM BOND PORTFOLIO should be
                        modest. Because of the short-term average weighted
                        maturities, the Portfolio is expected to exhibit low to
                        moderate price fluctuations as interest rates change.
                        The LONG-TERM BOND PORTFOLIO is exposed to substantial
                        interest rate risk. The Portfolio is expected to have an
                        average maturity in excess of
 
                                       26
<PAGE>   31
 
                        15 years which exposes it to high to very high price
                        fluctuations due to changing interest rates.
 
THE PORTFOLIOS ARE
SUBJECT TO INCOME RISK  INCOME RISK is the potential for a decline in a
                        Portfolio's income due to falling market interest rates.
                        In relative terms, income risk will be higher for the
                        Fund's shorter-term Portfolios and lower for the Fund's
                        longer-term Portfolios.
 
THE LONG-TERM BOND
PORTFOLIO IS SUBJECT TO
CALL RISK               An additional risk associated with long-term corporate
                        bonds is call risk. CALL RISK is the possibility that
                        corporate bonds held by the Portfolio will be repaid
                        prior to maturity. Call provisions, common in many
                        corporate bonds, allow bond issuers to redeem bonds
                        prior to maturity (at a specific price). When interest
                        rates are falling, bond issuers often exercise these
                        call provisions, paying off bonds that carry high stated
                        interest rates and often issuing new bonds at lower
                        rates. For the Portfolio, the result would be that bonds
                        with high interest rates are "called" and must be
                        replaced with lower-yielding instruments. In these
                        circumstances, the income of the Portfolio would
                        decline. Reflecting these additional credit and call
                        risks, the corporate portion of the portfolio will
                        generally offer higher yields than the government
                        portion.
 
THE TOTAL BOND
MARKET PORTFOLIO IS
SUBJECT TO
PREPAYMENT RISK         As a mutual fund investing a portion of its assets in
                        mortgage-backed securities (see chart on page --), the
                        Total Bond Market Portfolio is subject to prepayment
                        risk to a limited extent. PREPAYMENT RISK is the
                        possibility that, during periods of declining interest
                        rates, the principal invested in high-yielding
                        mortgage-backed securities will be repaid earlier than
                        scheduled, and the Fund will be forced to reinvest the
                        unanticipated payments at generally lower interest
                        rates.
 
                        Prepayment risk has two important effects on the
                        Portfolio. First, when interest rates fall and principal
                        prepayments are reinvested at lower interest rates, the
                        income that the Portfolio derives from mortgage-backed
                        securities is reduced. Second, like other fixed income
                        securities, mortgage-backed securities generally decline
                        in price when interest rates rise. However, because of
                        prepayment risk, mortgage-backed securities (and thus in
                        part the share price of the Portfolio and the value of
                        the Index) will not enjoy as large a gain in market
                        value as ordinary bonds when interest rates fall. In
                        part to compensate for prepayment risk, mortgage-backed
                        securities generally offer higher yields than bonds of
                        comparable credit quality and maturity.
 
CREDIT RISK IS EXPECTED
TO BE LOW               CREDIT RISK is the possibility that an issuer of
                        securities held by a Portfolio will be unable to make
                        payments of either interest or principal. The credit
                        risk of a Portfolio is a function of the credit quality
                        of its underlying securities.
 
                        The credit quality of each Portfolio is expected to be
                        very high, and thus credit risk should be low. As of
                        September 30, 1994, the average quality,
 
                                       27
<PAGE>   32
 
                        as rated by Moody's Investors Service, Inc., of each
                        Portfolio's benchmark index was as follows:
 
<TABLE>
                            <S>                                                <C>
                            Aggregate Bond Index..............................   --
                            Short-Term Bond Index.............................   --
                            Intermediate-Term Bond Index......................   --
                            Long-Term Bond Index..............................   --
</TABLE>
 
                        To a limited extent, the Portfolios are also exposed to
                        event risk, the possibility that corporate fixed income
                        securities held by the Portfolios may suffer a
                        substantial decline in credit quality and market value
                        due to a corporate restructuring. Corporate
                        restructurings, such as mergers, leveraged buyouts,
                        takeovers or similar events, are often financed by a
                        significant expansion of corporate debt. As a result of
                        the added debt burden, the credit quality and market
                        value of a firm's existing debt securities may decline
                        significantly. While event risk may be high for certain
                        corporate securities held by the Portfolios, event risk
                        for each Portfolio in the aggregate should be low
                        because of each Portfolios diversified holdings and the
                        small percentage of the Portfolio assets invested in
                        corporate securities.
 
                        The corporate substitution strategy used by the Fund
                        (see discussion on page --) will increase credit risk
                        somewhat, as short-term investment grade corporate bonds
                        are substituted for U.S. Treasury bonds and notes;
                        however, owing to the diversified nature of the
                        Portfolios, and policies limiting the maturity and
                        maximum amount of substitutions, the overall credit and
                        event risk of the Portfolio is expected to be low.
- --------------------------------------------------------------------------------
 
WHO SHOULD
INVEST                  The Funds offer investors the advantage of a "passive"
                        approach to investing. These include low investment
                        costs, exceptional diversification among a wide range of
                        stocks and bonds, minimal portfolio turnover, and
                        relative predictability. Unlike other mutual funds,
                        which generally attempt to "beat" market averages with
                        often unpredictable results, the Portfolios of the Funds
                        seek to "match" the performance of their underlying
                        indexes and thus are expected to provide a highly
                        predictable return relative to these benchmarks.
 
                        However, shareholders should expect to be fully exposed
                        to the market risks inherent in investing in stocks and
                        bonds. As the prices of stocks and bonds may be
                        volatile, only investors able to tolerate short-term,
                        possibly substantial fluctuations in the value of their
                        investment, brought about by generally declining stock
                        or bond prices, should contemplate an investment in the
                        Funds.
 
                        Investors may wish to reduce the potential risk of
                        investing in a Portfolio by purchasing shares on a
                        regular, periodic basis (dollar-cost averaging) rather
                        than making an investment in one lump sum.
 
                        The Funds are intended to be a long-term investment
                        vehicle and not designed to provide investors with a
                        means of speculating on short-term market movements.
                        Investors who engage in excessive account activity
 
                                       28
<PAGE>   33
 
                        generate additional costs which are borne by all
                        shareholders. In order to minimize such costs the Funds
                        have adopted the following policies. The Funds reserve
                        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 Funds have adopted exchange
                        privilege limitations as described in the section
                        "Exchange Privilege Limitations." Finally, the Funds
                        reserve the right to suspend the offering of their
                        shares.
 
                        Investors should not consider an investment in any one
                        Fund a complete investment program, but should maintain
                        holdings of securities with different risk
                        characteristics -- including common stocks, bonds and
                        money market instruments.
- --------------------------------------------------------------------------------
 
BOND INDEX FUND

INVESTORS SEEKING TO
PARTICIPATE IN THE
"BOND MARKET" AS A
WHOLE OR ITS VARIOUS
MATURITY SEGMENTS       The Portfolios are designed for individual and
                        institutional investors seeking well-diversified,
                        low-cost ways to participate in the U.S. fixed income
                        markets. The Portfolios will be essentially fully
                        invested at all times. Because the Total Bond Market
                        Portfolio will represent all major sectors of the
                        investment grade fixed income securities market, the
                        Portfolio is a suitable vehicle for those investors
                        seeking ownership in the "bond market" as a whole,
                        without regard to particular sectors. The Short-Term
                        Bond, Intermediate-Term Bond and Long-Term Bond
                        Portfolios are suitable vehicles for those investors
                        seeking ownership in specific maturity segments of the
                        "bond market." Each Portfolio concentrates on bonds of
                        various maturities as illustrated in the chart on page
                        --. Because of the risks associated with bond
                        investments, each Portfolio is intended to be a
                        long-term investment vehicle and is not designed to
                        provide investors with a means of speculating on
                        short-term bond market movements.
 
                        As with all longer-term, fixed income investments, the
                        share price of the Total Bond Market, Intermediate-Term
                        Bond and Long-Term Bond Portfolios will vary, with the
                        Long-Term Bond Portfolio expected to exhibit the
                        greatest volatility. Share price volatility should be
                        significantly less for the Short-Term Bond Portfolio.
                        Credit risk should be minimal for each Portfolio. The
                        investment risks are described on page  --.
 
                        The Portfolios are also suitable for those investors
                        with common stock holdings who are seeking a
                        complementary fixed income investment to create a more
                        balanced asset mix. Because of potential share price
                        fluctuations, the Portfolios may be inappropriate for
                        investors who have short-term objectives or who require
                        stability of principal.
- --------------------------------------------------------------------------------
 
                                       29
<PAGE>   34
 
BALANCED INDEX
FUND

INVESTORS SEEKING A
BALANCE BETWEEN
CURRENT INCOME AND
CAPITAL GROWTH          The Fund is designed for conservative investors seeking
                        a long-term investment offering both current income and
                        the potential for capital growth. By balancing its
                        investments among common stocks and bonds, the Fund is
                        expected to provide lower investment risk and share
                        price volatility than a mutual fund which invests
                        exclusively in common stocks. The balanced investment
                        approach of the Fund tends to reduce exposure to stock
                        and bond market risks; it does not eliminate them. The
                        Fund is thus suitable for investors who wish to gain
                        exposure to the potential capital growth provided by the
                        stock market, while limiting investment risk. Such a
                        balanced investment program might be particularly well-
                        suited to long-term investment objectives such as
                        retirement savings.
- --------------------------------------------------------------------------------
 
INDEX TRUST

LONG-TERM INVESTORS
SEEKING A "PASSIVE"
APPROACH FOR INVESTING
IN COMMON STOCKS        All six Portfolios of the Trust are designed for
                        long-term investors seeking the advantages of investing
                        in a diversified portfolio of common stocks.
 
                        Four Portfolios of the Trust provide a vehicle for
                        investing in a broad market index:
 
                        - The 500 PORTFOLIO is designed for investors seeking to
                          replicate the total return of the S&P 500 Index, an
                          index emphasizing large capitalization common stocks.
 
                        - The EXTENDED MARKET PORTFOLIO is designed for
                          investors seeking to replicate the total return of the
                          Wilshire 4500 Index, an index consisting of small and
                          medium capitalization companies.
 
                        - The TOTAL STOCK MARKET PORTFOLIO is designed for
                          investors seeking to replicate the total return of the
                          Wilshire 5000 Index, an index consisting of all U.S.
                          stocks that trade on a regular basis on either the New
                          York or American Stock Exchange or the NASDAQ
                          over-the-counter market. The Total Stock Market
                          Portfolio will therefore reflect the performance of
                          the entire U.S. stock market.
 
                        - The SMALL CAPITALIZATION STOCK PORTFOLIO is designed
                          for investors seeking to replicate the total return of
                          the Russell 2000 Small Stock Index, an index
                          consisting of approximately 2,000 small-capitalization
                          stocks.
 
                        Two Portfolios are designed for investors seeking to
                        emphasize certain investment characteristics while
                        continuing to utilize a "passive" investment approach:
 
                        - The VALUE PORTFOLIO is designed for investors seeking
                          to replicate the total return of the S&P/BARRA Value
                          Index, an index consisting of companies of the S&P 500
                          Index with lower than average market price to book
                          value ratios. Such a "value-oriented" Portfolio may be
                          appropriate for more conservative stock market
                          investors who are seeking higher dividend income and
                          somewhat below average stock market volatility.
 
                        - The GROWTH PORTFOLIO is designed for investors seeking
                          to replicate the total return of the S&P/BARRA Growth
                          Index, an index consisting of
 
                                       30
<PAGE>   35
 
                          companies of the S&P 500 Index with higher than
                          average market price to book value ratios. Such a
                          "growth-oriented" Portfolio may be appropriate for
                          investors who have little need for current dividend
                          income and who can tolerate somewhat above average
                          stock market volatility.
 
                        Taken together in appropriate proportions, the Value and
                        Growth Portfolios are expected to approximate the total
                        returns achieved by the 500 Portfolio.
- --------------------------------------------------------------------------------
 
INTERNATIONAL
EQUITY INDEX FUND

LONG-TERM INVESTORS
SEEKING TO INVEST
IN INTERNATIONAL
COMMON STOCKS           The Portfolios are designed for investors who seek a
                        low-cost "passive" approach for investing in a broadly
                        diversified portfolio of international common stocks.
                        Unlike other equity mutual funds, which generally seek
                        to "beat" market averages with often unpredictable
                        results, the Portfolios of the Fund seek to "match"
                        their respective indexes and thus are expected to
                        provide a predictable return relative to their
                        respective benchmarks. In particular, the European
                        Portfolio is designed for investors seeking to
                        approximate the total investment results (before fund
                        expenses and withholding taxes) of the MSCI-Europe
                        (Free) Index, a diversified index of European common
                        stocks. The Pacific Portfolio is designed for investors
                        seeking to approximate the total investment results
                        (before fund expenses and withholding taxes) of the
                        MSCI-Pacific Index, a diversified index of Pacific Basin
                        common stocks.
 
                        The European and Pacific Portfolios are also suitable
                        for investors seeking to create a portfolio which
                        parallels the performance of the MSCI-EAFE (Free) Index,
                        a broadly diversified index consisting of over 1,000
                        international equity securities. By investing in the two
                        portfolios in the appropriate percentages (52% in the
                        Pacific Portfolio and 48% in the European Portfolio as
                        of December 31, 1993), a portfolio approximating the
                        investment characteristics of EAFE (Free) may be
                        created.
 
                        The Emerging Markets Portfolio is designed for investors
                        seeking to approximate the total investment results
                        (before fund expenses and withholding taxes) of the
                        MSCI-Select Emerging Markets Free Index, a diversified
                        index of common stocks of emerging market countries.
- --------------------------------------------------------------------------------
 
IMPLEMENTATION
OF POLICIES             The Portfolios follow a variety of investment practices
                        in an effort to duplicate the total return of their
                        respective indexes.
- --------------------------------------------------------------------------------
 
BOND INDEX FUND

THE PORTFOLIOS INVEST
IN FIXED INCOME
SECURITIES              Each Portfolio will invest at least 80% or more of its
                        assets in securities included in its benchmark Index.
                        The Indexes measure the total investment return (capital
                        change plus income) provided by a universe of fixed
                        income securities, weighted by the market value
                        outstanding of each security. The securities included in
                        each Index generally meet the following criteria, as
                        defined by Lehman Brothers: an outstanding market value
                        of at least $100 million; and investment grade
                        quality -- i.e., rated a minimum of Baa by Moody's
                        Investors Service, Inc. or BBB by Standard & Poor's
                        Corporation. The maturities of securities included in
                        each index will vary as described on page --.
 
                                       31
<PAGE>   36
 
THE PORTFOLIOS USE A
"SAMPLING" TECHNIQUE    The Portfolios will be unable to hold all of the
                        individual issues which comprise the Indexes because of
                        the large number of securities involved. Instead, each
                        Portfolio will hold a representative sample of the
                        securities in its respective Index, selecting one or two
                        issues to represent entire "classes" or types of
                        securities in the Index. Each Portfolio will be
                        constructed so as to match the composition of its
                        benchmark index as described below.
 
                        At the broadest level, each Portfolio will seek to hold
                        securities which reflect the weighting of the major
                        asset classes in its respective index. For the Total
                        Bond Market Portfolio, these classes include U.S.
                        Treasury and agency securities, corporate bonds, and
                        mortgage-backed securities. For the Short-Term Bond,
                        Intermediate-Term Bond and Long-Term Bond Portfolios,
                        the two major classes of securities include U.S.
                        Treasury and agency securities and corporate bonds.
 
                        Such a sampling technique is expected to be an effective
                        means of substantially duplicating the income and
                        capital returns provided by each Index. Over time, the
                        correlation between the performance of the Fund and the
                        Index is expected to be 0.95 or higher. A correlation of
                        1.00 would indicate perfect correlation, which would be
                        achieved when the net asset value of a Portfolio,
                        including the value of its dividend and capital gain
                        distributions, increases or decreases in exact
                        proportion to changes in the Index. Because the
                        Portfolios of the Fund incur operating expenses, as
                        opposed to their respective indexes, which do not, a
                        perfect correlation of 1.00 is unlikely to be achieved.
 
THE TOTAL BOND
MARKET PORTFOLIO MAY
INVEST IN MORTGAGE-
BACKED SECURITIES       As part of its effort to duplicate the investment
                        performance of its Index, the Total Bond Market
                        Portfolio may invest in mortgage-backed securities.
                        Mortgage-backed securities represent an interest in an
                        underlying pool of mortgages. Unlike ordinary fixed
                        income securities, which generally pay a fixed rate of
                        interest and return principal upon maturity,
                        mortgage-backed securities repay both interest income
                        and principal as part of their periodic payments.
                        Because the mortgages underlying mortgage-backed
                        certificates can be prepaid at any time by homeowners or
                        corporate borrowers, mortgage-backed securities give
                        rise to certain unique "prepayment" risks. See
                        "Investment Risks."
 
                        The Total Bond Market Portfolio may purchase
                        mortgage-backed securities issued by the Government
                        National Mortgage Association (GNMA), the Federal Home
                        Loan Mortgage Corporation (FHLMC), the Federal National
                        Mortgage Association (FNMA), and the Federal Housing
                        Authority (FHA). GNMA securities are guaranteed by the
                        U.S. Government as to the timely payment of principal
                        and interest; securities from other Government-sponsored
                        entities are generally not secured by an explicit pledge
                        of the U.S. Government. The Portfolio may also invest in
                        conventional mortgage securities, which are packaged by
                        private corporations and are not guaranteed by the U.S.
                        Government. Mortgage securities that are guaranteed by
                        the U.S. Government are guaranteed
 
                                       32
<PAGE>   37
 
                        only as to the timely payment of principal and interest.
                        The market value of such securities is not guaranteed
                        and may fluctuate.
- --------------------------------------------------------------------------------
 
BALANCED INDEX
FUND

THE FUND INVESTS IN
A SAMPLE OF ALL U.S.
COMMON STOCKS           The Fund's common stock investments will be selected
                        from securities included in the Wilshire 5000, an index
                        of all regularly and publicly traded U.S. common stocks
                        that trade on the New York and American Stock Exchanges
                        and in the NASDAQ over-the-counter market. Approximately
                        6,000 stocks, including large, medium, and small
                        capitalization companies, are included in the Wilshire
                        5000, which serves as a proxy for the complete U.S.
                        stock market.
 
                        Under normal circumstances, the Fund will invest 60% of
                        its net assets in common stocks included in the Wilshire
                        5000. In an effort to replicate the investment
                        performance of the Wilshire 5000, the Fund's common
                        stock holdings will include approximately 500 of the
                        largest market capitalization stocks in the Index and an
                        additional representative sample of the remaining
                        stocks. The high transaction costs and illiquidity of
                        many of the smaller stocks in the Wilshire 5000 make
                        complete replication of the Index's holding impractical.
 
COMMON STOCKS ARE
SELECTED USING
OPTIMIZATION
TECHNIQUES ("PORTFOLIO
OPTIMIZATION")          The stocks of the Wilshire 5000 included in the Fund are
                        selected using a statistical technique known as
                        "optimization." This process selects stocks for the Fund
                        so that various industry weightings, market
                        capitalizations, and fundamental characteristics (e.g.,
                        price-to-book, price-to-earnings, and debt-to-asset
                        ratios, as well as dividend yields) match those of the
                        Wilshire 5000. For instance, if 10% of the
                        capitalization of the Wilshire 5000 consists of utility
                        companies with relatively large market capitalizations,
                        then the Fund's stock holdings are constructed so that
                        approximately 10% of the Fund's stocks represent
                        utilities with relatively large capitalizations.
 
                        The Fund is not sponsored, endorsed, sold or promoted by
                        Wilshire Associates. Wilshire(R) and Wilshire 5000(R)
                        are registered service marks of Wilshire Associates.
 
THE FUND INVESTS IN A
SAMPLE OF ALL U.S.
INVESTMENT GRADE DEBT   Under normal circumstances, the Fund will invest 40% of
                        its net assets in fixed income securities included in
                        the Lehman Brothers Index, an index of U.S.
                        investment-grade, fixed income securities. More than
                        4,500 individual bond issues, including U.S. Treasury
                        and Government agency securities, corporate debt
                        obligations, and mortgage-backed securities are included
                        in the Lehman Brothers Index.
 
                        The securities included in the Lehman Brothers Index in
                        which the Fund may invest generally meet the following
                        criteria, as defined by Lehman Brothers: an effective
                        maturity of not less than one year; an outstanding
                        market value of at least $50 million; investment grade
                        quality--i.e., rated a minimum of Baa by Moody's
                        Investors Service, Inc. or BBB by Standard & Poor's
                        Corporation; and general availability in the
                        marketplace. If a security held in the Fund's portfolio
                        is downgraded to a rating below these minimum standards,
                        the Fund may continue to hold it until
 
                                       33
<PAGE>   38
 
                        such time as the adviser deems it most advantageous to
                        dispose of the security.
 
BONDS ARE SELECTED
USING A STRATIFIED
SAMPLING TECHNIQUE      The large number of issues in the Index makes it
                        impractical for the Fund to hold all of the individual
                        issues which comprise the Index. Instead, the Fund will
                        attempt to replicate the investment performance of the
                        Lehman Brothers Index by holding a representative sample
                        of the securities in the Index. In choosing a
                        representative sample of bond investments from the
                        Lehman Brothers Index, the Fund utilizes a "stratified
                        sampling" technique, which means that, the Fund will
                        select one or two individual bond issues to represent
                        entire "classes" or types of fixed income investments in
                        the Index.
 
                        At the broadest level, the Fund will seek to hold
                        securities reflecting the three major classes of fixed
                        income investments in the Lehman Brothers Index -- U.S.
                        Treasury and Government agency securities, corporate
                        debt obligations, and mortgage-backed securities. For
                        example, if corporate debt obligations represent 25% of
                        the Index, then 25% of the Fund's bond holdings will
                        also be invested in such securities. As the Fund's
                        assets grow, these classes of investments will be
                        further delineated along the lines of sector, term to
                        maturity, coupon, and credit rating. For example, within
                        the corporate debt class, all long-term, low coupon AA-
                        rated utility bonds might be represented in the Fund by
                        one or two individual utility securities, which would
                        result in less diversification and greater security
                        specific risk in the Fund compared to the Index.
 
                        The Lehman Brothers Index is a trademark of Lehman
                        Brothers, Inc. Inclusion of a security in the Index in
                        no way implies an opinion by Lehman Brothers, Inc. as to
                        the attractiveness or appropriateness of a security as
                        an investment. Lehman Brothers, Inc. is neither a
                        sponsor of nor in any way affiliated with the Fund.
 
THE FUND'S RETURNS
SHOULD BE CLOSELY
CORRELATED WITH ITS
UNDERLYING INDEXES      The sampling techniques utilized by the Fund are
                        expected to be an effective means of substantially
                        duplicating the investment performance (dividend income
                        plus capital change) of the Fund's underlying indexes:
                        the Wilshire 5000 (for the 60% of net assets invested in
                        common stocks) and the Lehman Brothers Index (for the
                        40% of net assets invested in bonds). The correlation
                        between the performance of the Fund's stock and bond
                        investments and the Wilshire 5000 and Lehman Brothers
                        Indexes, respectively, is expected to be at least 0.95.
 
                        Due to the use of sampling techniques, however, neither
                        the stock nor bond holdings of the Fund are expected to
                        track their target benchmarks with the degree of
                        accuracy that complete replication of the indexes would
                        have provided. The principal advantage of this sampling
                        approach is to provide an efficient means of investing
                        in a large universe of stocks and bonds. In particular,
                        the Fund is expected to provide exceptionally broad
                        diversification, and should operate at low costs due to
                        both its "passive" approach to portfolio management and
                        expected low portfolio turnover rate.
- --------------------------------------------------------------------------------
 
                                       34
<PAGE>   39
 
INDEX TRUST

THE 500 PORTFOLIO
INVESTS IN ALL 500 S&P
STOCKS                  The 500 Portfolio attempts to duplicate the investment
                        results of the S&P 500 Index by holding all 500 stocks
                        in approximately the same proportions as they are
                        represented in the Index. This indexing technique is
                        known as "complete replication."
 
                        The S&P 500 Index is composed of 500 common stocks,
                        which are chosen by Standard & Poor's Corporation on a
                        statistical basis to be included in the Index. The
                        inclusion of a stock in the S&P 500 Index in no way
                        implies that Standard & Poor's Corporation believes the
                        stock to be an attractive investment. The 500
                        securities, most of which trade on the New York Stock
                        Exchange, represented, as of December 31, 1993,
                        approximately 67.4% of the market value of all U.S.
                        common stocks. Each stock in the S&P 500 Index is
                        weighted by its market value.
 
                        Because of the market-value weighting, the 50 largest
                        companies in the S&P 500 Index currently account for
                        approximately 50% of the Index. Typically, companies
                        included in the S&P 500 Index are the largest and most
                        dominant firms in their respective industries. As of
                        December 31, 1993, the five largest companies in the
                        Index were: General Electric (2.7%), Exxon Corporation
                        (2.4%), AT&T (2.2%), Wal-Mart Stores (1.8%) and Coca
                        Cola (1.7%). The largest industry categories were
                        international oil companies (7.2%), telephone companies
                        (6.0%), electric power (4.8%), electrical equipment
                        (3.8%) and diversified health care companies (3.6%).
 
THE EXTENDED MARKET
PORTFOLIO INVESTS IN
MEDIUM-AND
SMALL-SIZE COMPANY
STOCKS                  While the S&P 500 Index includes the preponderance of
                        large market capitalization stocks, it excludes most of
                        the medium- and small-size companies which comprise the
                        remaining 33% of the capitalization of the U.S. stock
                        market. The Wilshire 4500 Index consists of all U.S.
                        stocks that are not in the S&P 500 Index and that trade
                        regularly on the New York and American Stock Exchanges
                        as well as in the NASDAQ over-the-counter market. More
                        than 5,000 stocks of medium- and small-capitalization
                        companies are included in the Wilshire 4500 Index.
 
                        The Extended Market Portfolio will be unable to hold all
                        of the more than 5,000 issues which comprise the
                        Wilshire 4500 Index because of the costs involved and
                        the illiquidity of many of the securities. Instead, the
                        Portfolio will hold a representative sample of the
                        securities in the Wilshire 4500 Index.
 
THE TOTAL STOCK
MARKET PORTFOLIO
INVESTS IN A SAMPLE OF
ALL U.S. STOCKS         Neither the S&P 500 Index nor the Wilshire 4500 Index
                        independently represents the U.S. stock market as a
                        whole. The Wilshire 5000 Index, which consists of all
                        regularly and publicly traded U.S. stocks, provides a
                        complete proxy for the U.S. stock market. More than
                        6,000 stocks, including large-, medium-, and
                        small-capitalization companies are included in the
                        Wilshire 5000 Index.
 
                        In an effort to replicate the investment performance of
                        the Wilshire 5000 Index, the Total Stock Market
                        Portfolio will invest in approximately 1,000 of the
                        largest stocks in the index and an additional
                        representative sample of the remaining stocks. As in the
                        case for the Extended Market Portfolio, the high
                        transaction costs and illiquidity of many of the
 
                                       35
<PAGE>   40
 
                        smaller stocks make complete replication of the Wilshire
                        4500 Index's holdings impractical.
 
                        The Extended Market and Total Stock Market Portfolios
                        are not sponsored, endorsed, sold or promoted by
                        Wilshire Associates. Wilshire(R) and Wilshire 5000(R)
                        are registered service marks of Wilshire Associates.
 
THE SMALL
CAPITALIZATION STOCK
PORTFOLIO INVESTS IN
SMALL-SIZE COMPANY
STOCKS                  The Small Capitalization Stock Portfolio attempts to
                        duplicate the investment results of the Russell 2000
                        Index by investing in approximately 1,000 of the 2,000
                        stocks in the Russell 2000 Index. The Russell 2000 Index
                        is composed of approximately 2,000 small-capitalization
                        common stocks. A company's stock market capitalization
                        is the total market value of its floating outstanding
                        shares. As of September 30, 1993, the average stock
                        market capitalization of the Russell 2000 was $360
                        million. As in the case of the Extended Market
                        Portfolio, the high transaction costs and illiquidity of
                        many of the small stocks contained in the Russell 2000
                        Index make complete replication of the holdings
                        impractical.
 
                        The Portfolio is neither sponsored by nor affiliated
                        with the Frank Russell Company. Frank Russell's only
                        relationship to the Portfolio is the licensing of the
                        use of the Russell 2000 Small Stock Index. Frank Russell
                        Company is the owner of the trademarks and copyrights
                        relating to the Russell indexes.
 
THE EXTENDED MARKET,
TOTAL STOCK MARKET
AND SMALL
CAPITALIZATION STOCK
PORTFOLIOS USE
SAMPLING TECHNIQUES     The stocks of the Wilshire 4500 Index to be included in
                        the Extended Market, Total Stock Market and Small
                        Capitalization Stock Portfolios will be selected
                        utilizing a statistical sampling technique known as
                        "optimization."
 
                        This sampling technique, which is described on page --,
                        is expected to be an effective means of substantially
                        duplicating the income and capital returns of the
                        Extended Market, Total Stock Market and Small
                        Capitalization Stock Portfolios' target benchmarks. Over
                        time, the correlation between the performance of the
                        Extended Market, Total Stock Market and Small
                        Capitalization Stock Portfolios and their respective
                        indexes, the Wilshire 4500 Index, Wilshire 5000 Index
                        and Russell 2000 Index, is expected to be at least 0.95.
                        A correlation of 1.00 would indicate perfect
                        correlation, which would be achieved when the net asset
                        value of a Portfolio, including the value of its
                        dividend and capital gains distributions, increases or
                        decreases in exact proportion to changes in the
                        respective target benchmark.
 
                        Due to the use of the sampling technique, neither the
                        Extended Market Portfolio, Total Stock Market Portfolio
                        nor the Small Capitalization Stock Portfolio is expected
                        to track its benchmark index with the same degree of
                        accuracy as evidenced by the high degree of correlation
                        between the 500 Portfolio and its benchmark. However,
                        the principal advantage of this technique is to provide
                        an efficient means to invest in the universe of stocks.
                        In particular, the three Portfolios are expected to
                        provide broad diversification, and should operate at low
                        costs due both to their "passive" approach to portfolio
                        management and low portfolio turnover rate.
 
                                       36
<PAGE>   41
 
THE VALUE AND GROWTH
PORTFOLIOS EMPHASIZE
STOCKS WITH CERTAIN
INVESTMENT
CHARACTERISTICS         In an effort to duplicate the investment results of
                        their respective indexes, the Value and Growth
                        Portfolios will utilize "complete replication," the same
                        indexing technique used for the 500 Portfolio.
                        Specifically, the Value and Growth Portfolios will hold
                        all of the stocks included in the S&P/BARRA Value and
                        Growth Indexes, respectively, in approximately the same
                        proportions as those stocks are represented in the
                        Indexes.
 
                        Standard & Poor's Corporation constructs the S&P/BARRA
                        Value and Growth Indexes semi-annually by ranking all
                        common stocks included in the S&P 500 Index by their
                        price-to-book ratios. The resulting list is then divided
                        in half by market capitalization. Those companies
                        representing half of the market capitalization of the
                        S&P 500 Index and having lower price-to-book ratios are
                        included in the S&P/BARRA Value Index; the remaining
                        companies are incorporated in the S&P/BARRA Growth
                        Index. On December 31, 1993, after the semi-annual
                        reconstitution of the indexes, the S&P/BARRA Value Index
                        consisted of 310 common stocks in the S&P 500 Index,
                        while the S&P/BARRA Growth Index consisted of the
                        remaining 190. Each Index represented half of the market
                        capitalization of the S&P 500 Index.
 
                        Investment managers may use a number of different
                        methods to classify stocks as "value" or "growth". There
                        may also be other ways to define benchmarks for "value"
                        and "growth" investing. If other methods were applied to
                        the companies comprising the S&P/BARRA Value and Growth
                        Indexes, the classification of the stocks as "growth" or
                        "value" might be different.
 
                        Typically, the stocks included in the S&P/BARRA Value
                        Index exhibit above-average dividend yields and lower
                        price-to-book ratios. By comparison, the stocks included
                        in the S&P/BARRA Growth Index exhibit below-average
                        dividend yields and higher price-to-book ratios. As of
                        December 31, 1993, the five largest companies in the
                        S&P/BARRA Value Index were Exxon Corp., Royal Dutch
                        Petroleum Co., DuPont E.I. de Nemour, IBM, and Mobil,
                        the five largest companies in the S&P/BARRA Growth Index
                        were Wal Mart Stores, General Electric Co., Exxon
                        Corporation, American Telephone & Telegraph, and Coca
                        Cola Co.
 
                        The 500, Value and Growth Portfolios are not sponsored,
                        endorsed, sold or promoted by Standard & Poor's
                        Corporation ("S&P"). S&P makes no representations or
                        warranty, implied or expressed, to the purchasers of the
                        Portfolios or any member of the public regarding the
                        advisability of investing in index funds or the ability
                        of the S&P 500, S&P/BARRA Value and S&P/BARRA Growth
                        Indexes to track general stock market performance or to
                        track the general performance of value and growth
                        stocks. S&P does not guarantee the accuracy and/or the
                        completeness of the S&P 500, S&P/BARRA Value and
                        S&P/BARRA Growth Indexes or any data included herein.
 
                        S&P's only relationship to the Portfolios is the
                        licensing of the S&P marks and the S&P 500, S&P/BARRA
                        Value and S&P/BARRA Growth
 
                                       37
<PAGE>   42
 
                        Indexes, which are determined, composed and calculated
                        by S&P without regard to the 500, Value and Growth
                        Portfolios.
- --------------------------------------------------------------------------------
 
INTERNATIONAL
EQUITY INDEX FUND

EUROPEAN PORTFOLIO
AND PACIFIC PORTFOLIO

THE PORTFOLIOS INVEST
IN INTERNATIONAL
COMMON STOCKS USING
SAMPLING TECHNIQUES
("PORTFOLIO
OPTIMIZATION")          The MCSI-Europe (Free) Index consists of approximately
                        575 equity securities from Europe, and the MSCI-Pacific
                        Index consists of more than 425 equity securities from
                        Australia and the Far East. The stocks included in each
                        index are chosen by Morgan Stanley Capital International
                        on a statistical basis. Each stock in MSCI-Europe (Free)
                        and MSCI-Pacific is weighted according to its market
                        value as a percentage of the total market value of all
                        stocks in the index. (A stock's market value equals the
                        number of shares outstanding times the most recent price
                        of the security.) The inclusion of a stock in the index
                        in no way implies the Morgan Stanley Capital
                        International believes the stock to be an attractive
                        investment.
 
                        The Portfolios will be unable to hold all of the issues
                        that comprise their respective indexes because of the
                        costs involved and the illiquidity of many of the
                        securities. Instead, each Portfolio will attempt to hold
                        a representative sample of approximately 250 or more of
                        the securities in its respective Index, which will be
                        selected utilizing the statistical technique, "portfolio
                        optimization." (See page -- for a general explanation of
                        "portfolio optimization".)
 
                        Due to the use of this sampling or "portfolio
                        optimization" technique, the Portfolios are not expected
                        to track their benchmark indexes with the same degree of
                        accuracy as large capitalization domestic index funds.
                        Over time, the correlation between the performance of
                        each Portfolio and its respective index is expected to
                        be greater than 0.95. A correlation of 1.00 would
                        indicate perfect correlation, which would be achieved
                        when the net asset value of each Portfolio, including
                        the value of its dividend and capital gains
                        distributions, increases or decreases in exact
                        proportion to changes in its respective index.
                        --------------------------------------------------------
 
                                       38
<PAGE>   43
 
EMERGING MARKETS
PORTFOLIO

THE PORTFOLIO INVESTS
IN INTERNATIONAL
COMMON STOCKS USING
SAMPLING TECHNIQUES
("PORTFOLIO
OPTIMIZATION")          The MSCI -- Select Emerging Markets Free Index consists
                        of approximately 460 equity securities from emerging
                        market countries in Europe, Latin America and Southeast
                        Asia. The stocks included in the Index are chosen on a
                        statistical basis. The companies based in Hong Kong and
                        Singapore are included in the Index to provide
                        participation in more liquid emerging markets; their
                        combined weight is limited to 20% of the Index. Each
                        stock within Hong Kong and Singapore will be weighted
                        according to its market value as a percentage of the
                        total market value of all of the Hong Kong and Singapore
                        stocks included in the index. (A stock's market value
                        equals the number of shares outstanding times the most
                        recent price of the security). The remaining portion of
                        the Index will be comprised of common stocks from 10
                        other emerging market countries -- Indonesia, Malaysia,
                        the Philippines, Thailand, Argentina, Brazil, Mexico,
                        Greece, Portugal and Turkey. Each stock in these
                        countries will be weighted according to its market value
                        as a percentage of the total market value of the
                        companies in the 10 countries multiplied by the
                        percentage of the index that these countries represent.
                        From time to time, additional emerging markets will be
                        analyzed for inclusion in the Index, based on liquidity
                        and tradeability. The inclusion of a country or stock in
                        the Index in no way implies that the country or stock is
                        an attractive investment.
 
                        The Portfolio will be unable to hold all of the issues
                        that comprise its Index, because of the transaction
                        costs involved and the illiquidity of many of the
                        securities. Instead, the Portfolio will attempt to hold
                        a representative sample of approximately 300 or more of
                        the securities in its Index by selecting stocks
                        utilizing the statistical technique, "portfolio
                        optimization." (See page -- for a general explanation of
                        "portfolio optimization".)
 
                        Due to the use of this sampling or "portfolio
                        optimization" technique, the Portfolio is not expected
                        to track its benchmark with the same degree of accuracy
                        as large capitalization domestic index funds. Over time,
                        the correlation between the performance of the Portfolio
                        and the Index is expected to be greater than 0.95. A
                        correlation of 0.95 or higher is expected to be achieved
                        when the Portfolio exceeds $100 million in assets.
 
THE THREE PORTFOLIOS
MAY ENTER INTO
FORWARD CURRENCY
CONTRACTS               Each Portfolio may enter into foreign currency forward
                        and foreign currency futures contracts in order to
                        maintain the same currency exposure as their respective
                        indexes. A Portfolio may not enter into such contracts
                        for speculative purposes, or as a way of protecting
                        against anticipated adverse changes in exchange rates
                        between foreign currencies and the U.S. dollar. A
                        foreign currency forward 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 THREE PORTFOLIOS
MAY BORROW MONEY        Each Portfolio may borrow money from a bank up to a
                        limit of 15% of the market value of its assets, but only
                        for temporary or emergency purposes. A Portfolio may
                        borrow money only to meet redemption
 
                                       39
<PAGE>   44
 
                        requests prior to the settlement of securities already
                        sold or in the process of being sold by the Portfolio.
                        To the extent that a Portfolio borrows money prior to
                        selling securities, the Portfolio may be leveraged; at
                        such times, the Portfolio may appreciate or depreciate
                        in value more rapidly than its benchmark index. Both
                        Portfolios will repay any money borrowed in excess of 5%
                        of the market value of their total assets prior to
                        purchasing additional portfolio securities.
 
ALL PORTFOLIOS MAY
INVEST IN SHORT-TERM
MONEY MARKET
INSTRUMENTS             Although they normally seek to remain substantially
                        fully invested in securities in the respective indexes,
                        all Portfolios of the Funds may invest temporarily in
                        certain short-term money market instruments. Such
                        securities may be used to invest uncommitted cash
                        balances or to maintain liquidity to meet shareholder
                        redemptions. 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.
- --------------------------------------------------------------------------------
 
                        The Funds may use futures contracts, options, warrants,
                        convertible securities and swap agreements.
 
BOND INDEX FUND         The Portfolios of the Fund may utilize bond (interest
                        rate) futures contracts and options to a limited extent.
                        Specifically, each Portfolio may enter into futures
                        contracts provided that not more than 5% of its assets
                        are required as a futures contract deposit. In addition,
                        the Portfolios may enter into futures contracts and
                        options transactions only to the extent that obligations
                        under such contracts or transactions represent not more
                        than 20% of a Portfolio's assets.
- --------------------------------------------------------------------------------
 
BALANCED INDEX
FUND                    The Fund may utilize stock and bond (interest rate)
                        futures contracts, options, warrants, convertible
                        securities and swap agreements to a limited extent.
                        Specifically, the Fund may enter into futures contracts
                        and options provided that not more than 5% of its assets
                        are required as a margin deposit for futures contracts
                        or options. Additionally, the Fund's investment in
                        warrants will not exceed more than 5% of its assets (2%
                        with respect to warrants not listed on the New York or
                        American Stock Exchanges).
- --------------------------------------------------------------------------------
 
INDEX TRUST             Each Portfolio of the Trust may utilize stock futures
                        contracts, options, warrants, convertible securities and
                        swap agreements to a limited extent. Specifically, each
                        Portfolio may enter into futures contracts and options
                        provided that not more than 5% of its assets are
                        required as a margin deposit for futures contracts or
                        options and provided that not more than 20% of a
                        Portfolio's assets are invested in futures and options
                        at any time. Additionally, the Trust's investment in
                        warrants will not exceed more than 5% of its assets (2%
                        with respect to warrants not listed on the New York or
                        American Stock Exchanges).
- --------------------------------------------------------------------------------
 
INTERNATIONAL
EQUITY INDEX FUND       The Portfolios of the Fund may utilize stock futures
                        contracts, options, warrants, convertible securities and
                        swap agreements to a limited
 
                                       40
<PAGE>   45
 
                        extent. Specifically, each Portfolio may enter into
                        futures contracts and options provided that not more
                        than 5% of its assets are required as a margin deposit
                        for futures contracts or options. Additionally, the
                        Fund's investment in warrants will not exceed more than
                        5% of its assets (for the European Portfolio and the
                        Pacific Portfolio 2% with respect to warrants not listed
                        on the New York or American Stock Exchanges).
 
                        Futures contracts, options, warrants, convertible
                        securities and swap agreements may be used for several
                        reasons: to simulate full investment in the underlying
                        index while retaining a cash balance for fund management
                        purposes, to facilitate trading, to reduce transaction
                        costs or to seek higher investment returns when a
                        futures contract, option, warrant, convertible security
                        or swap agreement is priced more attractively than the
                        underlying equity security or index. While each of these
                        securities can be used as leveraged investments, the
                        Portfolios may not use them to leverage their net
                        assets.
 
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.
                        When investing in futures contracts, Portfolios of the
                        Vanguard Bond Index Fund will segregate cash or cash
                        equivalents in the amount of the underlying obligation.
                        The Portfolios of the Vanguard Balanced Index Fund,
                        Vanguard Index Trust and Vanguard International Equity
                        Index Fund will not use futures contracts, options,
                        warrants, convertible securities or swap agreements for
                        speculative purposes or to leverage its net assets.
                        Accordingly, the primary risks associated with the use
                        of futures contracts, options, warrants, convertible
                        securities or swap agreements by the Portfolio are: (i)
                        imperfect correlation between the change in market value
                        of the stocks held by the Portfolio and the prices of
                        futures contracts, options, warrants, convertible
                        securities or swap agreements; (ii) 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; and (iii) the risk of the
                        counterparty or guaranteeing agent defaulting. The risk
                        of imperfect correlation will be minimized by investing
                        only in those contracts whose behavior is expected to
                        resemble that of the Portfolio's underlying securities.
                        The risk that the 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 or swap agreements purchased or
                        sold over-the-counter may be less liquid than exchange
                        traded securities. Illiquid securities, in general,
                        including swap agreements, may not represent more than
                        15% of the net assets of the Portfolio.
 
                        Since there are no futures traded on the S&P/BARRA Value
                        and Growth Indexes, MSCI-Europe (Free), Pacific Index or
                        the MSCI-Select Emerging Markets Free Index, it will be
                        necessary for the Vanguard Index Trust
 
                                       41
<PAGE>   46
 
                        Value and Growth Portfolios and the Portfolios of
                        Vanguard International Equity Index Fund to utilize a
                        composite of other futures contracts to simulate the
                        performance of the Indexes. This process may magnify the
                        "tracking error" of a Portfolio's performance compared
                        to that of its Index, due to lower correlation of the
                        selected futures with its Index. The investment adviser
                        will attempt to reduce this tracking error by investing
                        in futures contracts whose behavior is expected to
                        resemble that of the underlying securities, although
                        there can be no assurance that these selected futures
                        will perfectly correlate with the performance of either
                        Index.
 
SWAP AGREEMENTS         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 thereunder, 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 its obligation to the counterparty.
                        This risk will be mitigated by investing the Portfolios
                        in the specific asset for which it is obligated to pay a
                        return.
 
ALL PORTFOLIOS MAY
LEND THEIR SECURITIES   All Portfolios may lend their investment securities to
                        qualified institutional investors for either short-term
                        or long-term purposes of realizing additional income.
                        Loans of securities by the Portfolio will be
                        collateralized by cash, letters of credit, or securities
                        issued or guaranteed by the U.S. Government or its
                        agencies. The collateral will equal at least 100% of the
                        current market value of the loaned securities.
 
PORTFOLIO TURNOVER FOR
ALL PORTFOLIOS IS
EXPECTED TO BE LOW      Although they generally seek to invest for the long
                        term, each Portfolio of Vanguard Bond Index Fund,
                        Vanguard Balanced Index Fund, Vanguard Index Trust, and
                        Vanguard International Equity Index Fund retains the
                        right to sell securities irrespective of how long they
                        have been held. It is anticipated that the annual
                        portfolio turnover of each Portfolio of the Funds
                        (except Vanguard Balanced Index Fund) will not exceed
                        50%. The annual portfolio turnover rate for the Vanguard
                        Balanced Index Fund is not expected to exceed 100%. A
                        turnover rate of 50% would occur, for example, if one
                        half of the securities of a Portfolio were replaced
                        within one year.
- --------------------------------------------------------------------------------
 
INVESTMENT
LIMITATIONS
EACH PORTFOLIO HAS
ADOPTED CERTAIN
FUNDAMENTAL
LIMITATIONS             Each portfolio of the Funds has adopted certain
                        limitations on its investment practices. Specifically,
                        each Portfolio will not:
 
                        (a)  invest more than 25% of its assets in any one
                             industry;
 
                        (b)  borrow money, except that the Funds may borrow 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
                             exceeding 15% of the
 
                                       42
<PAGE>   47
 
                            value of the Funds' net assets. Whenever borrowing
                            exceeds 5% of the value of the Funds' net assets,
                            the Funds will not make any additional investments.
 
                        Each Portfolio of Vanguard Bond Index will not:
 
                        (a)  invest more than 5% of its assets in the securities
                             of any single issuer except obligations of the
                             United States Government;
 
                        (b)  purchase more than 5% of the voting securities of
                             any issuer;
 
                        (c)  pledge, mortgage or hypothecate its assets to an
                             extent greater than 5% of the value of its total
                             assets.
 
                        Each Portfolio of Vanguard Balanced Index Fund, Vanguard
                        Index Trust, and Vanguard International Equity Index
                        Fund will not:
 
                        (a)  with respect to 75% of its assets, purchase
                             securities of any issuer (except obligations of the
                             U.S. Government and its instrumentalities) if, as a
                             result, more than 5% of the value of the Fund's
                             assets would be invested in the securities of each
                             issuer; and
 
                        (b)  with respect to 75% of its assets, purchase more
                             than 10% of the voting securities of any issuer.
 
                        These investment limitations are considered at the time
                        investment securities are purchased. The limitations
                        described here and in the Statement of Additional
                        Information may be changed for a specific Fund only with
                        the approval of a majority of the shareholders.
- --------------------------------------------------------------------------------
 
MANAGEMENT OF
THE FUNDS

VANGUARD ADMINISTERS
AND DISTRIBUTES
THE FUNDS               The Funds are members of The Vanguard Group of
                        Investment Companies, a family of over 30 investment
                        companies with over 80 distinct portfolios and total
                        assets in excess of $130 billion. Through their jointly
                        owned subsidiary, The Vanguard Group, Inc. ("Vanguard"),
                        they and the other funds in the Group obtain at cost
                        virtually all of their corporate management,
                        administrative, shareholder accounting and distribution
                        services. Vanguard also provides investment advisory
                        services on an at-cost basis to certain Vanguard 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
                        1.02% for the mutual fund industry (data provided by
                        Lipper Analytical Services).
 
                        Vanguard employs a supporting staff of management and
                        administrative 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 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 custodian fees.
 
                                       43
<PAGE>   48
 
                        Vanguard also provides distribution and marketing
                        services to the Vanguard 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 it share of the
                        Group's distribution costs.
- --------------------------------------------------------------------------------
 
INVESTMENT
ADVISERS

VANGUARD'S FIXED
INCOME GROUP
MANAGES SOME OF THE
FUNDS' INVESTMENTS      Each Portfolio of Vanguard Bond Index Fund and the bond
                        portion of Vanguard Balanced Index Fund receive all
                        investment advisory services from Vanguard's Fixed
                        Income Group. The Fixed Income Group provides investment
                        advisory services to 35 Vanguard money market and bond
                        portfolios, both taxable and tax-exempt. Total assets
                        under management by Vanguard's Fixed Income Group were
                        $52 billion as of December 31, 1993. The Portfolios are
                        not actively managed, but are instead administered by
                        the Fixed Income Group using computerized, quantitative
                        techniques. The Fixed Income Group is supervised by the
                        Officers of the Fund. Ian A. MacKinnon, Senior Vice
                        President of Vanguard, has been in charge of the Group
                        since its inception in 1981.
 
                        Mr. MacKinnon is responsible for setting the broad
                        investment strategies employed by the Fund, and for
                        overseeing the portfolio manager who implements those
                        strategies on a day-to-day basis.
 
                        The portfolio manager for Vanguard Bond Index Fund and
                        the bond portion of Vanguard Balanced Index Fund is
                        Kenneth E. Volpert, Assistant Vice President of
                        Vanguard, who serves as portfolio manager of the
                        Vanguard Variable Insurance Fund -- High-Grade Portfolio
                        and the bond portion of the Balanced Portfolio. Mr.
                        Volpert began managing the Vanguard Bond Index fund in
                        1992. For six years prior to joining Vanguard, Mr.
                        Volpert was associated with Mellon Bond Associates.
 
                        The Fixed Income Group places all orders for purchases
                        and sales of portfolio securities. Purchases of
                        portfolio securities are made either directly from the
                        issuer or from securities dealers. The Fixed Income
                        Group may sell portfolio securities prior to their
                        maturity if circumstances and considerations warrant and
                        if it believes such dispositions advisable. The Group
                        seeks to obtain the best available net price and most
                        favorable execution for all portfolio transactions.
 
VANGUARD'S CORE
MANAGEMENT GROUP
MANAGES SOME OF THE
FUNDS, ON AN AT-COST
BASIS                   Each Portfolio of Index Trust, International Equity
                        Index Fund and the equity portion of Balanced Index Fund
                        receive their investment advisory services on an at-cost
                        basis from Vanguard's Core Management Group, which also
                        provides investment advisory services to Vanguard
                        Institutional Index Fund, a portion of the assets of
                        Vanguard/Windsor II and Vanguard Morgan Growth Fund, and
                        several indexed separate accounts. Total indexed assets
                        under management as of December 31, 1993 were $16.4
                        billion. The Portfolios of the Fund are not actively
                        managed, but are instead administered by the Core
                        Management Group using computerized, quantitative
                        techniques. The Group is supervised by the Officers of
                        the Fund.
 
                                       44
<PAGE>   49
 
                        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 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 Fund.
- --------------------------------------------------------------------------------
 
DIVIDENDS,
CAPITAL GAINS
AND TAXES
                    
FOUR PORTFOLIOS PAY 
QUARTERLY DIVIDENDS;
TWO PAY DIVIDENDS       Vanguard Index Trust distributes substantially all of
ONCE A YEAR             its net investment income in the form of dividends. The
                        500, Total Stock Market, Value and Growth Portfolios pay
                        quarterly dividends, while the Extended Market and Small
                        Capitalization Stock Portfolios pay annual dividends.
                        For all six Portfolios, net capital gains, if any, are
                        distributed annually.
 
                        Each Portfolio of the International Equity Index Fund
                        intends to distribute substantially all of its ordinary
                        income in the form of dividends. The Portfolios pay
                        annual dividends. Capital gains distributions, if any,
                        are also made annually.
 
                        The Balanced Index Fund will distribute substantially
                        all of its net investment income in the form of
                        quarterly dividends.
 
                        Dividends consisting of virtually all of the ordinary
                        income of each Portfolio of Bond Index Fund are declared
                        daily and are payable to shareholders of record at the
                        time of declaration. Such dividends are paid on the
                        first business day of each month. Capital gains
                        distributions, if any, are made annually.
 
                        A Portfolio's dividend and capital gains distributions
                        may be reinvested in additional shares or received in
                        cash. See "Choosing a Distribution Option" for a
                        description of these distribution methods. Shareholders
                        of Bond Index Fund who choose to reinvest their dividend
                        distributions will receive a quarterly (not monthly)
                        confirmation statement.
 
                        Pursuant to the Internal Revenue Code, certain dividend
                        and capital gains distributions declared by each
                        Portfolio during December. Such distributions, if
                        received by shareholders by January 31, are deemed to
                        have been paid by the Funds and received by shareholders
                        on December 31 of the prior year.
 
                        Each Portfolio of the Funds intends to continue to
                        qualify for taxation as a "regulated investment company"
                        under the Internal Revenue Code so that each Portfolio
                        will not be subject to federal income tax to the extent
                        its income is distributed to shareholders. Dividends
                        paid by each Portfolio 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-
 
                                       45
<PAGE>   50
 
                        received deduction. However, the portion of the
                        dividends so qualified depends on the aggregate taxable
                        qualifying dividend income received by a Portfolio from
                        domestic (U.S.) sources.
 
                        Distributions paid by a Portfolio 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 Portfolio. Capital gains distributions are
                        made when a Portfolio realizes net capital gains on
                        sales of portfolio securities during the year. A
                        Portfolio does not seek to realize any particular amount
                        of capital gains during a year; rather, realized gains
                        are a byproduct 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 a
                        Portfolio 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 a Portfolio. Also, keep in
                        mind that if you purchase shares in a Portfolio 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 Funds will notify you annually as to the tax status
                        of dividend and capital gains distributions paid by each
                        Portfolio.
 
EACH PORTFOLIO OF
INTERNATIONAL EQUITY
INDEX FUND MAY
"PASS THROUGH"
FOREIGN TAXES           Each Portfolio may elect to "pass through" to its
                        shareholders the amount of foreign income taxes paid by
                        a Portfolio. The Portfolios will make such an election
                        only if it is deemed to be in the best interests of the
                        shareholders. If this election is made, shareholders of
                        a Portfolio 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 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 a Portfolio 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 the same fund).
 
                        Dividend distributions, capital gain distributions, and
                        capital gains or losses from redemptions and exchanges
                        may be subject to state and local taxes.
 
                        Each Portfolio of the Funds 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
                        Taxpayer
 
                                       46
<PAGE>   51
 
                        Identification Number and by certifying that you are not
                        subject to backup withholding.
 
                        Vanguard Index Trust is organized as a Pennsylvania
                        business trust and, in the opinion of counsel, is not
                        liable for any income or franchise tax in the
                        Commonwealth of Pennsylvania. The Trust will be subject
                        to Pennsylvania county personal property tax in the
                        county which is the site of its principal office.
                        Shareholders who are Pennsylvania residents will not be
                        subject to county personal property taxes, with the
                        exception of non-exempt holders who are residents of the
                        City and School District of Pittsburgh.
 
                        The International Equity Index, Balanced Index and Bond
                        Index Funds have obtained Certificates of Authority to
                        do business as foreign corporations in Pennsylvania and
                        do business and maintain offices in that state. In the
                        opinion of counsel, the shares of each of the Funds are
                        exempt from Pennsylvania personal property taxes.
 
                        The tax discussion set forth above is included for
                        general information only. Prospective investors should
                        consult their own tax advisers concerning the tax
                        consequences of an investment in the Funds.
- --------------------------------------------------------------------------------
 
THE SHARE
PRICE OF
EACH PORTFOLIO          The share price or "net asset value" per share of each
                        Portfolio is determined by dividing the total market
                        value of the Portfolio's investments and other assets,
                        less any liabilities, by the number of outstanding
                        shares of the Portfolio. Net asset value per share is
                        determined once daily at the close of regular trading on
                        the New York Stock Exchange (generally 4:00 p.m. Eastern
                        time).
 
                        Portfolio securities that are listed on a securities
                        exchange are valued at the last quoted sales price on
                        the day the valuation is made. Price information on
                        listed securities is taken from the exchange where the
                        security is primarily traded. Securities which are
                        listed on an exchange and which are not traded on the
                        valuation date are valued at the mean of the bid and ask
                        prices. For the 500, Value and Growth Portfolios of
                        Vanguard Index Trust, Vanguard International Equity
                        Index Fund, and each Portfolio of Vanguard Bond Index
                        Fund, unlisted securities for which market quotations
                        are not readily available are valued at the latest
                        quoted bid price. For the Extended Market, Total Stock
                        Market and Small Capitalization Stock Portfolios, and
                        Vanguard Balanced Index Fund, unlisted securities for
                        which market quotations are not readily available are
                        valued at the mean of the bid and ask prices. Temporary
                        cash investments are valued at amortized cost which
                        approximates market value. For all Funds, securities for
                        which no current quotations are readily available are
                        valued at fair market value as determined in good faith
                        by the Directors (Trustees). 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.
 
                        Each Portfolios's share price can be found daily in the
                        mutual fund listings of most major newspapers under the
                        heading of The Vanguard Group.
- --------------------------------------------------------------------------------
 
                                       47
<PAGE>   52
 
GENERAL
INFORMATION             Vanguard Bond Index, Vanguard Balanced Index and
                        Vanguard International Equity Index Funds are organized
                        as Maryland corporations. The Articles of Incorporation
                        permit the Directors to issue 1,000,000,000 shares of
                        common stock of each Fund, with a $.001 par value. The
                        Board of Directors has the power to designate one or
                        more classes ("series") of shares of common stock and to
                        classify or reclassify any unissued shares with respect
                        to such series. Currently, Vanguard Bond Index Fund is
                        offering shares of four series, Vanguard Balanced Index
                        Fund is offering shares of one series and Vanguard
                        International Equity Index is offering shares of three
                        series.
 
                        Vanguard Index Trust is a Pennsylvania business trust.
                        The Declaration of Trust permits the Trustees to issue
                        an unlimited number of shares of beneficial interest
                        with no par value. The Board of Trustees has the power
                        to designate one or more classes or series of shares of
                        common stock and to classify or reclassify any unissued
                        shares with respect to such series. Currently, the Trust
                        is offering shares of six series.
 
                        The shares of each series of the Funds are fully paid
                        and non-assessable; have no preference as to conversion,
                        exchange, dividends, retirement or other features; and
                        have no preemptive rights. Such shares have non-
                        cumulative voting rights, meaning that the holders of
                        more than 50% of the shares voting for the election of
                        Directors (Trustees) can elect 100% of the Directors
                        (Trustees) if they so choose.
 
                        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 (Trustee) or Directors
                        (Trustees) of a Fund if requested in writing by the
                        holders of not less than 10% of the outstanding shares
                        of such Fund.
 
                        All securities and cash for the Total Bond Market
                        Portfolio of Vanguard Bond Index Fund are held by Morgan
                        Guaranty Trust Company, New York, NY. All securities and
                        cash for the Short-Term Bond, Intermediate-Term Bond and
                        Long-Term Bond Portfolios are held by State Street Bank
                        and Trust Company ("State Street Bank"), Boston, MA. All
                        securities and cash for Vanguard Balanced Index Fund are
                        held by CoreStates Bank, N.A. ("CoreStates"),
                        Philadelphia, PA. All Securities and cash for Vanguard
                        International Equity Index Fund are held by Morgan
                        Stanley Trust Company. All securities and cash for the
                        500, Extended Market, Total Stock Market and Small
                        Capitalization Stock Portfolios of Vanguard Index Trust
                        are held by State Street Bank. All securities and cash
                        for the Value and Growth Portfolios are held by
                        CoreStates.
 
                        The Vanguard Group, Inc., Valley Forge, PA, serves as
                        the Funds' Transfer and Dividend Disbursing Agent. Price
                        Waterhouse LLP, serves as independent accountants for
                        the Funds and will audit their financial statements
                        annually. The Funds are not involved in any litigation.
- --------------------------------------------------------------------------------
 
                                       48
<PAGE>   53
 
                               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 Portfolio you have chosen and amount you
                        wish to invest. Your purchase must be equal to or
                        greater than the $3,000 minimum initial investment
                        requirement in any Portfolio ($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 Account Registration Form or
                        have any questions about the Fund, please call our
                        Investor Information Department (1-800-662-7447). NOTE:
                        For other types of account registrations (e.g.,
                        corporations, associations, other organizations, trusts
                        or power of attorney), please call us to determine which
                        additional forms you may need.
 
                        Because of the risks associated with bond and stock
                        investments, each Portfolio is intended to be a
                        long-term investment vehicle and is not designed to
                        provide investors with a means of speculating on
                        short-term bond 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.
 
                        Each Portfolio's shares are purchased at the
                        next-determined net asset value after your investment
                        has been received in the form of Federal Funds. See
                        "When Your Account Will Be Credited". The Fund is
                        offered on a no-load basis (i.e., there are no sales
                        commissions or 12b-1 fees).
 
                                       49
<PAGE>   54
 
IMPORTANT NOTE
ON EXPENSES             Transaction fees are charged by Portfolios as follows:
 
<TABLE>
<CAPTION>
                                                               FEES ON        FEES ON
                                                              PURCHASES     REDEMPTIONS
                                                              ---------     -----------
                        <S>                                   <C>           <C>
                        Vanguard Bond Index Fund............     None           None
                        Vanguard Balanced Fund..............     None           None
                        Vanguard Index Trust
                          500 Portfolio.....................     None           None
                          Extended Market Portfolio.........        1%          None
                          Total Stock Market Portfolio......      .25%          None
                          Small Capitalization Stock
                             Portfolio......................        1%          None
                          Value Portfolio...................     None           None
                          Growth Portfolio..................     None           None
                        Vanguard International Equity Index Fund
                          European Portfolio................        1%          None
                          Pacific Portfolio.................        1%          None
                          Emerging Markets Portfolio........        2%             1%
</TABLE>
 
                        Additionally, each Portfolio of all of the Funds and the
                        Trust assessed $10 annual account maintenance fee. See
                        "Portfolio Expenses" for more information.
 
ADDITIONAL
INVESTMENTS             Subsequent investments may be made by mail ($100 minimum
                        per Portfolio), wire ($1,000 minimum), exchange from
                        another Vanguard Fund account ($100 minimum per
                        Portfolio), 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 options.
                        --------------------------------------------------------
 
<TABLE>
<S>                       <C>                                  <C>
                                                               ADDITIONAL INVESTMENTS
                          NEW ACCOUNT                          TO EXISTING ACCOUNTS
PURCHASING BY MAIL        Please include the amount            Additional investments
                          of your initial investment           should include the
Complete and sign the     and the name of the                  Invest-by-Mail remittance
enclosed Account          Portfolios you have                  form attached to your Fund
Registration Form         selected on the registra-            confirmation statements.
                          tion form, make your check           Please make your check
                          payable to The Vanguard              payable to The Vanguard
                          Group (Portfolio Number),            Group (Portfolio Number),
                          see below for the                    write your account number
                          appropriate number and mail          on your check, and using
                          to:                                  the return envelope
                                                               provided, mail to the
                          VANGUARD FINANCIAL CENTER            address indicated on the
                          P.O. BOX 2600                        Invest-by-Mail Form. See
                          VALLEY FORGE, PA 19482               below for the appropriate
                                                               Portfolio number.
</TABLE>
 
                                       50
<PAGE>   55
 
<TABLE>
<S>                       <C>                                  <C>
For express or            VANGUARD FINANCIAL CENTER            All written requests should
registered mail,          455 DEVON PARK DRIVE                 be mailed to one of the
send to:                  WAYNE, PA 19087                      addresses indicated for new
                                                               accounts. Do not send
                                                               registered or express mail
                                                               to the post office box
                                                               address.
                          PORTFOLIO NUMBERS
                          VANGUARD BOND                        VANGUARD BALANCED
                          INDEX FUND                           INDEX FUND -- 02
                          Total Bond Market
                          Portfolio -- 84                      VANGUARD INDEX TRUST
                          Short-Term Bond                      500 Portfolio -- 40
                          Portfolio -- 132                     Extended Market
                          Intermediate-Term Bond               Portfolio -- 98
                          Portfolio -- 314                     Total Stock Market
                          Long-Term Bond                       Portfolio -- 85
                          Portfolio -- 522                     Small Capitalization Stock
                                                               Portfolio -- 48
                          VANGUARD INTERNATIONAL               Value Portfolio -- 06
                          EQUITY INDEX FUND                    Growth Portfolio -- 09
                          European Portfolio -- 79
                          Pacific Portfolio -- 72
                          Emerging Markets
                          Portfolio -- 533
                          ----------------------------------------------------------------
PURCHASING BY WIRE                          CORESTATES BANK, N.A.
                                            ABA 031000011
Money should be                             CORESTATES ACCT NO 0101 9897
wired to:                                   ATTN VANGUARD
                                            NAME OF FUND OR TRUST
BEFORE WIRING                               NAME OF PORTFOLIO
                                            ACCOUNT NUMBER
Please contact                              ACCOUNT REGISTRATION
Client Services
(1-800-662-2739)          To assure proper receipt, please be sure your bank includes the
                          name of the Portfolio, 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.
</TABLE>
 
PURCHASING BY
EXCHANGE (from a
Vanguard account)       You may open an account or purchase additional shares by
                        making an exchange from an existing Vanguard Fund
                        account. However, the Funds reserve the right to refuse
                        any exchange purchase request. Call our Client Services
                        Department (1-800-662-2739) for assistance. The new
                        account will have the same registration as the existing
                        account.
 
                                       51
<PAGE>   56
 
                        Telephone exchanges are not accepted for the Portfolios
                        of Vanguard Balanced Index Fund, Vanguard Index Trust,
                        and Vanguard International Equity Index Fund. You may,
                        however, open an account by exchange by providing the
                        appropriate information on the Account Registration
                        Form.
 
PURCHASING BY
FUND EXPRESS

AUTOMATIC INVESTMENT
AND SPECIAL PURCHASE    The Fund Express Automatic Investment option lets you
                        move money from your bank account to your Vanguard
                        account on the schedule (monthly, bimonthly [every other
                        month], quarterly or yearly) you select. Additionally,
                        the Fund Express Special Purchase option which is only
                        available for Portfolios of the Vanguard Bond Index Fund
                        lets you move money from your bank account to your
                        Vanguard account at your request. To establish this
                        option, please provide the appropriate information on
                        the Account Registration Form. We will send you a
                        confirmation of your Fund Express enrollment; please
                        wait three weeks before using the service.
- --------------------------------------------------------------------------------
 
CHOOSING A
DISTRIBUTION
OPTION                  You must select one of three distribution options:
 
                        1. AUTOMATIC REINVESTMENT OPTION -- Both dividends and
                           capital gains distributions will be reinvested in
                           additional Fund 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 Fund 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

INVESTORS SHOULD ASK
ABOUT THE TIMING OF
CAPITAL GAINS AND
DIVIDEND DISTRIBUTIONS
BEFORE INVESTING        Under Federal tax laws, the Fund is required to
                        distribute net capital gains and dividend income to Fund
                        shareholders. These distributions are made to all
                        shareholders who own Fund shares as of the
                        distribution's record date, regardless of how long the
                        shares have been owned. Purchasing shares just prior to
                        the record date could have a significant impact on your
                        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 Fund shares for just a short period of time.
                        (Taxes are due on the distributions even if the dividend
                        or gain is reinvested in
 
                                       52
<PAGE>   57
 
                        additional Fund 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 NAV of the shares -- you should
                        be aware of the tax implications the timing of your
                        purchase may have.
 
                        Prospective investors should, therefore, inquire about
                        potential distributions before investing. Each Fund's
                        annual capital gains distributions normally occurs in
                        December. Income dividends are generally paid on the
                        first day of each month for the four Portfolios of
                        Vanguard Bond Index Fund, annually in December for the
                        three Portfolios of Vanguard International Equity Index
                        Fund, and the Extended Market and Small Capitalization
                        Stock Portfolio of Vanguard Index Trust, and quarterly
                        in March, June, September and December for Vanguard
                        Balanced Index Fund, and the 500, Total Stock Market,
                        and the Value and Growth Portfolios of Vanguard Index
                        Trust. For additional information on distributions and
                        taxes, see the section titled "Dividends, Capital Gains,
                        and Taxes."
- --------------------------------------------------------------------------------
 
IMPORTANT
INFORMATION
                     
ESTABLISHING OPTIONAL   The easiest way to establish optional Vanguard services
SERVICES                on your account is to select the options you desire when
                        you complete your Account Registration Form. IF YOU WISH
                        TO ADD OPTIONS LATER, 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 be issued upon request for
                        Portfolios of Vanguard Bond Index Fund, Vanguard Index
                        Trust, and the European and Pacific Portfolios of
                        Vanguard International Equity Index Fund. If a
                        certificate is lost, you may incur an expense to replace
                        it. Share certificates will not be available for
                        Vanguard Balanced Index Fund and the Emerging Markets
                        Portfolio of Vanguard International Equity Index 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.
 
CANCELLING
TRADES                  The Fund will not cancel any trade (e.g., a purchase,
                        exchange or redemption) believed to be authentic,
                        received in writing or by telephone, once the trade has
                        been received.
- --------------------------------------------------------------------------------
 
WHEN YOUR
ACCOUNT WILL
BE CREDITED             The trade date is the date on which your account is
                        credited.
 
                        For the Vanguard Bond Index Fund, the trade date is
                        generally the day on which the Fund receives your
                        investment in the form of Federal Funds (monies credited
                        to the Fund's Custodian Bank by a Federal Reserve
 
                                       53
<PAGE>   58
 
                        Bank). Your trade date varies according to your method
                        of payment for your shares.
 
                        For purchases by check the Fund is ordinarily credited
                        with Federal Funds within one business day. Thus, if
                        your purchase by check is received by the close of the
                        New York Stock Exchange (generally 4:00 p.m. Eastern
                        time), your trade date is the business day following
                        receipt of your check or wire. If your purchase is
                        received after the close of the Exchange, your trade
                        date is the second business day following receipt of
                        your check or wire.
 
                        For purchases by Federal Funds wire or exchange, the
                        Fund is credited immediately with Federal Funds. Thus,
                        if your purchase by Federal Funds wire or exchange is
                        received by the close of the Exchange, your trade date
                        is the day of receipt. If your purchase is received
                        after the close of the Exchange, your trade date is the
                        business day following receipt of your wire or exchange.
 
                        For Vanguard Balanced Fund, Vanguard Index Trust and
                        Vanguard International Equity Index Fund, if your
                        purchase is made by check, Federal Funds wire or
                        exchange, and is received by the close of regular
                        trading 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.
                        Shares of the Funds are purchased at the net asset value
                        determined on your trade date. Shares of the Extended
                        Market and Small Capitalization Stock Portfolios are
                        also subject to a 1% portfolio transaction fee, shares
                        of the Total Stock Market Portfolio are subject to a
                        0.25% portfolio transaction fee. Shares of Vanguard
                        International Equity Index Fund-Pacific Portfolio and
                        European Portfolio are subject to a 1% transaction fee
                        while shares of the Emerging Markets Portfolio are
                        subject to a 2% transaction fee on purchases. See "Fund
                        Expenses" for additional information.
 
                        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.
 
                        Your shares are purchased at the next-determined net
                        asset value after your investment has been received in
                        the form of Federal Funds. You will begin to earn
                        dividends on the calendar day following the trade date.
                        (For a Friday trade date, you will begin earning
                        dividends on Saturday.)
- --------------------------------------------------------------------------------
 
SELLING YOUR
SHARES                  You may withdraw any portion of the funds in your
                        account by redeeming shares at any time. You may
                        initiate a request by writing or by telephoning. Your
                        redemption proceeds are normally mailed, credited or
                        wired -- depending upon the method of withdrawal you
                        have PREVIOUSLY chosen -- within two business days after
                        the receipt of the request in Good Order.
                        --------------------------------------------------------
 
                                       54
<PAGE>   59
 
SELLING BY WRITING
A CHECK                 Redemption by check is only available to shareholders of
                        Vanguard Bond Index Fund. You may withdraw funds from
                        your Vanguard Bond Index account by writing a check
                        payable in the amount of $250 or more. When a check is
                        presented for payment to the Fund's agent, CoreStates
                        Bank, the Fund will redeem sufficient shares in your
                        account at the next-determined net asset value to cover
                        the amount of the check.
 
                        In order to establish the checkwriting option on your
                        account, all registered shareholders must sign a
                        signature card. After your completed signature card is
                        received by the Fund, an initial supply of checks will
                        be mailed within 10 business days. There is no charge
                        for checks or for their clearance. CORPORATIONS, TRUSTS
                        AND OTHER ORGANIZATIONS SHOULD CALL OR WRITE OUR CLIENT
                        SERVICES DEPARTMENT (1-800-662-2739) BEFORE SUBMITTING
                        SIGNATURE CARDS, AS ADDITIONAL DOCUMENTS MAY BE REQUIRED
                        TO ESTABLISH THE CHECKWRITING SERVICE.
 
                        Before establishing the checkwriting option, you should
                        be aware that:
 
                        1. Writing a check (a redemption of shares) is a taxable
                           event.
                        2. The Fund does not allow an account to be closed
                           through the checkwriting option.
                        3. Vanguard cannot guarantee a stop payment on the
                           checkwriting option. If you wish to reverse a stop
                           payment order, you must do so in writing.
                        4. Shares held in certificate form cannot be redeemed
                           using the checkwriting option.
                        5. The Fund reserves the right to terminate or alter
                           this service at any time.
                        --------------------------------------------------------
 
SELLING BY MAIL         Requests should be mailed to VANGUARD FINANCIAL CENTER,
                        VANGUARD INDEX FUNDS, P.O. BOX 1120, VALLEY FORGE, PA
                        19482. (For express or registered mail, send your
                        request to Vanguard Financial Center, Vanguard Index
                        Funds, 455 Devon Park Drive, Wayne, PA 19087.)
 
                        The redemption price of shares will be the Portfolio'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. The 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.
                        6. Any certificates you are holding for the account.
 
                        IF YOU HAVE QUESTIONS ABOUT THIS DEFINITION AS IT
                        PERTAINS TO YOUR REQUEST, PLEASE CALL OUR CLIENT
                        SERVICES (1-800-662-2739).
                        --------------------------------------------------------
 
                                       55
<PAGE>   60
 
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. For telephone redemptions, you may
                        have the proceeds sent to you either by mail or by wire.
                        In addition to the details below, please see "Important
                        Information About Telephone Transactions."
 
                        BY MAIL: Telephone mail redemption is automatically
                        established on your account unless you indicate
                        otherwise on your Account Registration Form. You may
                        redeem any amount by calling Vanguard. The proceeds will
                        be paid to the registered shareholders and mailed to the
                        address of record.
 
                        BY WIRE: Telephone wire redemption must be specifically
                        elected for your account. The best time to elect
                        telephone wire redemption is at the time you complete
                        your Account Registration Form. If you do not presently
                        have telephone wire redemption and wish to establish it,
                        please contact Client Services.
 
                        With the wire redemption option, you may withdraw a
                        minimum of $1,000 and have the amount wired directly to
                        your bank account. Wire redemptions less than $5,000 are
                        subject to a $5 charge deducted by Vanguard. There is no
                        Vanguard charge for wire redemptions of $5,000 or more.
                        However, your bank may assess a separate fee to accept
                        incoming wires.
 
                        A request to change the bank associated with your wire
                        redemption option must be received in writing, signed by
                        each registered shareholder, and accompanied by a voided
                        check or preprinted deposit slip. A signature guarantee
                        is required if your bank registration is not identical
                        to your Vanguard Fund account registration.
                        --------------------------------------------------------
 
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 (only available to Vanguard Bond Index Fund
                        Shareholders) lets you move money from your Vanguard
                        account to your bank account on your request. You may
                        elect Fund Express on the Account Registration Form or
                        call our Investor Information Department
                        (1-800-662-7447) for a Fund Express application.
                        --------------------------------------------------------
 
SELLING BY
EXCHANGE                You may sell shares of the Portfolio by making an
                        exchange into another Vanguard Fund account. Exchanges
                        to and from Vanguard Balanced Fund, Vanguard Index Trust
                        and Vanguard International Equity Index Fund may be made
                        only by mail. Send your exchange request to Vanguard
                        Financial Center, Vanguard (insert Fund name), P.O. Box
                        1120, Valley Forge, PA 19482. Please see "Exchanging
                        Your Shares" for details.
                        --------------------------------------------------------
 
                                       56
<PAGE>   61
 
IMPORTANT REDEMPTION
INFORMATION             Shares purchased by check or Fund Express may not be
                        redeemed until payment for the purchase is collected,
                        which may take up to ten calendar days. Your money is
                        invested and earns dividends during the holding period.
                        --------------------------------------------------------
 
DELIVERY OF
REDEMPTION
PROCEEDS                Redemption requests received by telephone prior to the
                        close of the New York Stock Exchange (generally 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.
 
                        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 or postpone
                        payment 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
COST STATEMENT          If you make a redemption from a qualifying account,
                        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
BALANCE REQUIREMENT     Due to the relatively high cost of maintaining smaller
                        accounts, the Fund reserves the right to redeem shares
                        in any account that is below the minimum initial
                        investment amount of $3,000. In addition, if at any time
                        the total investment does not have a value of at least
                        $1,000, you may be notified that the value of 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
                        shareholder. This minimum requirement does not apply to
                        IRAs, other retirement accounts, and Uniform
                        Gifts/Transfers to Minors Act accounts.
- --------------------------------------------------------------------------------
 
                                       57
<PAGE>   62
 
EXCHANGING
YOUR SHARES

EXCHANGING BY
TELEPHONE
Call Client Services
(1-800-662-2739)        Should your investment goals change, you may exchange
                        your shares for those of other available Vanguard Funds.
 
                        Vanguard Bond Index Fund is the only Vanguard Index Fund
                        that allows telephone exchange. When exchanging shares
                        by telephone, please have ready the Portfolio name,
                        account number, Social Security Number or Taxpayer
                        Identification Number listed on the account, and account
                        address. Requests for telephone exchanges received prior
                        to the close of 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 EXPLORER FUND,
                        VANGUARD INDEX TRUST, VANGUARD INTERNATIONAL EQUITY
                        INDEX FUND -- EUROPEAN AND PACIFIC PORTFOLIOS, 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 Portfolio, 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 INDEX FUNDS, P.O.
                        BOX 1120, VALLEY FORGE, PA 19482. (For express or
                        registered mail, send your request to Vanguard Financial
                        Center, Vanguard Index Funds, 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 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 and a purchase.
                          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.
 
                        - The redemption price of shares redeemed by exchange is
                          the net asset value next determined after Vanguard has
                          received all required documentation in Good Order.
 
                        - When opening a new account by exchange, you must meet
                          the minimum investment requirement of the new Fund.
 
                                       58
<PAGE>   63
 
                        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.
- --------------------------------------------------------------------------------
 
EXCHANGE
PRIVILEGE
LIMITATIONS             The Fund's exchange privilege is not intended to afford
                        shareholders a way to speculate on short-term movements
                        in 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 a Portfolio of the Fund during
                        any twelve month period. Notwithstanding these
                        limitations, 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.
- --------------------------------------------------------------------------------
 
IMPORTANT
INFORMATION
ABOUT TELEPHONE
TRANSACTIONS            The ability to initiate redemptions (except wire
                        redemptions) and exchanges by telephone is automatically
                        established on your account unless you request in
                        writing that telephone transactions on your account not
                        be permitted. The ability to initiate wire redemptions
                        by telephone will be established on your account only if
                        you specifically elect this option in writing.
 
                        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 in which the account is registered;
                           and (iv) the Social Security or Taxpayer
                           Identification number listed on the account.
 
                        2. PAYMENT POLICY.  The proceeds of any telephone
                           redemption by mail will be made payable to the
                           registered shareowner and mailed to the address of
                           record, only. In the case of a telephone redemption
                           by wire, the wire transfer will be made only in
                           accordance with the shareowner's prior written
                           instructions.
 
                        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. If Vanguard
                        fails to follow reasonable security procedures, it may
                        be liable for any losses resulting from unauthorized or
                        fraudulent telephone transactions on your account.
- --------------------------------------------------------------------------------
 
                                       59
<PAGE>   64
 
TRANSFERRING
REGISTRATION            You may transfer the registration of any of your Fund
                        shares to another person by completing a transfer form
                        and sending it to: VANGUARD FINANCIAL CENTER, P.O. BOX
                        1110, VALLEY FORGE, PA 19482, ATTENTION: TRANSFER
                        DEPARTMENT. The request must be in Good Order. To obtain
                        a transfer form, please call our Client Services
                        Department (1-800-662-2739).
- --------------------------------------------------------------------------------
 
OTHER VANGUARD
SERVICES

STATEMENTS AND
REPORTS                 For more information about any of these services, please
                        call our Investor Information Department at
                        1-800-662-7447.
 
                        Vanguard will send you a confirmation statement each
                        time you initiate a transaction in your account. 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.
 
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.
 
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
 
                                       60
<PAGE>   65
 
                        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
                        dividends and/or capital gains distributions
                        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 Automated Clearing House (ACH)
                        network. You may elect this service on the Account
                        Registration Form or call our Investor Information
                        Department (1-800-662-7447) for a Vanguard Dividend
                        Express application.
 
VANGUARD
TELE-ACCOUNT            Vanguard Tele-Account is a convenient, automated service
                        that provides share price, price change and yield
                        quotations on Vanguard Funds through any TouchToneTM
                        telephone. This service also lets you obtain information
                        about your account balance, your 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 our
                        Investor Information Department (1-800-662-7447).
- --------------------------------------------------------------------------------
 
                                       61
<PAGE>   66
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>              <C>                                   
                 [LOGO]
                 ---------------------------
                 THE VANGUARD GROUP
                 OF INVESTMENT
                 COMPANIES
                 Vanguard Financial Center
                 P.O. Box 2600
                 Valley Forge, PA 19482
                 INVESTOR INFORMATION
                 DEPARTMENT:
                 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)
                 TELECOMMUNICATION SERVICE
                 FOR THE HEARING-IMPAIRED:
                 1-800-662-2738
                 TRANSFER AGENT:
                 The Vanguard Group, Inc.
                 Vanguard Financial Center
                 Valley Forge, PA 19482
     PO----
</TABLE>
 
- --------------------------------------------------------------------------------
<PAGE>   67
                                EDGAR APPENDIX



1. Vanguard Banner Waving.

<PAGE>   68
 
                                     PART B
 
                              VANGUARD INDEX TRUST
 
                      STATEMENT OF ADDITIONAL INFORMATION
 
   
                               DECEMBER 30, 1994
    
 
   
     This Statement is not a prospectus but should be read in conjunction with
the Trust's current Prospectus (dated December 30, 1994). To obtain the
Prospectus please call:
    
 
                      VANGUARD INVESTOR INFORMATION CENTER
                                 1-800-662-7447
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                            PAGE
                                                                                            ----
<S>                                                                                         <C>
Investment Objectives and Policies........................................................     1
Investment Limitations....................................................................     5
Purchase of Shares........................................................................     6
Redemption of Shares......................................................................     7
Yield and Total Return....................................................................     7
Management of the Trust...................................................................     8
Portfolio Transactions....................................................................    10
Description of Shares and Voting Rights...................................................    10
Performance Measures......................................................................    11
Financial Statements......................................................................    12
</TABLE>
 
                       INVESTMENT OBJECTIVES AND POLICIES
 
     REPURCHASE AGREEMENTS  Each Portfolio of the Trust 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 Portfolio
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 Trust's
custodian banks until repurchased. In addition, the Board of Trustees will
monitor the Trust's repurchase agreement transactions generally and will
establish guidelines and standards for review of the creditworthiness of any
bank, broker or dealer party to a repurchase agreement with the Trust. 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.
 
     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 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 Trust's
management acknowledges these risks, it is expected that they can be controlled
through careful monitoring procedures.
 
                                        1
<PAGE>   69
 
     LENDING OF SECURITIES  Each Portfolio of the Trust may lend its securities
to qualified institutional investors who need to borrow securities in order to
complete certain transactions, such as covering short sales, avoiding failures
to deliver securities or completing arbitrage operations. By lending its
portfolio securities, a Portfolio attempts 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. The 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 Trust collateral consisting of cash, a letter of credit
issued by a domestic U.S. bank, or securities issued or guaranteed by the United
States Government having 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 Trust at any time and
(d) the Portfolio receive 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. Loan arrangements made by the Trust 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 creditworthiness of
the broker, dealer or institution, will be considered in making decisions with
respect to the lending of securities, subject to review by the Board of
Trustees.
 
     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 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.
 
     FUTURES CONTRACTS  Each Portfolio of the Trust may enter into futures
contracts, options, warrants, options on futures contracts, convertible
securities and swap agreements for the purpose of simulating full investment and
reducing transactions costs. The Trust does not use futures or options for
speculative purposes. Each Portfolio will only use futures and options to
simulate full investment in the underlying index while retaining a cash balance
for fund management purposes. 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. 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 deposits 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
 
                                        2
<PAGE>   70
 
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. A Portfolio of the Trust
expects to earn interest income on its margin deposits.
 
     Traders in futures contracts may be broadly classified as either "hedgers"
or "speculators." Hedgers use the futures markets primarily to offset
unfavorable changes in the value of securities otherwise held for investment
purposes or expected to be acquired by them. Speculators are less inclined to
own the securities underlying the futures contracts which they trade, and use
futures contracts with the expectation of realizing profits from fluctuations in
the prices of underlying securities. The Trust's Portfolios intend to use
futures contracts only for bonafide hedging purposes.
 
     Regulations of the CFTC applicable to the Trust require that all of its
futures transactions constitute bonafide hedging transactions. A Portfolio will
only sell futures contracts to protect against a decrease in the price of
securities it intends to sell or purchase contracts to protect against an
increase in the price of securities it intends to purchase. As evidence of this
hedging interest, the Portfolio 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 the Portfolio upon
sale of open futures contracts.
 
     Although techniques other than the sale and purchase of futures contracts
could be used to control the 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 the Portfolio's 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 the Portfolio's
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, the Portfolio would continue to be required to make daily cash
payments to maintain its required margin. In such situations, if the Portfolio
has insufficient cash, it may have to sell portfolio securities to meet daily
margin requirements at a time when it may be disadvantageous to do so. In
addition, the Portfolio may be required to make delivery of the instruments
underlying futures contracts it holds. The inability to close options and
futures positions also could have an adverse impact on the ability to
effectively hedge it.
 
     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. The Trust also bears the risk
that the adviser will incorrectly predict future stock market trends. However,
because the futures strategies of the Trust are engaged in only for hedging
purposes, the Trust's officers do not believe that the Portfolios are subject to
the risks of loss frequently associated with futures
 
                                        3
<PAGE>   71
 
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 the Trust 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 the 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 the Portfolio of margin deposits in the event
of bankruptcy of a broker with whom the Portfolio has an open position in a
futures contract or related option.
 
     Most futures exchanges limit the amount of fluctuation permitted in futures
contract prices during a single trading day. The daily limit establishes the
maximum amount that the price of a futures contract may vary either up or down
from the previous day's settlement price at the end of a trading session. Once
the daily limit has been reached in a particular type of contract, no trades may
be made on that day at a price beyond that limit. The daily limit governs only
price movement during a particular trading day and therefore does not limit
potential losses, because the limit may prevent the liquidation of unfavorable
positions. Futures contract prices have occasionally moved to the daily limit
for several consecutive trading days with little or no trading, thereby
preventing prompt liquidation of future positions and subjecting some futures
traders to substantial losses.
 
     FEDERAL TAX TREATMENT OF FUTURES CONTRACTS  Except for transactions the
Trust has identified as hedging transactions, each Portfolio of the Trust 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 the 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 each 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 of foreign currencies as other income derived with respect to the
Portfolio'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. 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.
 
     Each 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 Portfolio'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.
 
                                        4
<PAGE>   72
 
                             INVESTMENT LIMITATIONS
 
     The following restrictions and fundamental policies cannot be changed
without approval of the holders of a majority of the outstanding shares of each
Portfolio (as defined in the Investment Company Act of 1940). Each Portfolio may
not under any circumstances:
 
      1) change its investment objective, which is to provide investment results
         that correspond to the performance of a particular stock index as set
         forth in (2) below;
 
      2) change its investment policy, which is, in the case of the 500
         Portfolio, is to attempt to duplicate the performance of Standard &
         Poor's 500 Composite Stock Price Index by owning as many of the 500
         stocks contained in the index as is feasible; in the case of the
         Extended Market Portfolio, is to attempt to duplicate the performance
         of common stocks traded on the New York Stock Exchange, American Stock
         Exchange and NASDAQ not included in the S&P 500 Index as represented by
         the Wilshire 4500 Index; in the case of the Total Stock Market
         Portfolio to match the investment performance of the Wilshire 5000
         Index, an index consisting of all regularly traded U.S. stocks; in the
         case of the Value Portfolio to attempt to duplicate the performance of
         the Standard & Poor's/BARRA Value Index by owning as many of the stocks
         contained in the index as is feasible; in the case of the Growth
         Portfolio to attempt to duplicate the performance of the Standard &
         Poor's/BARRA Growth Index by owning as many of the stocks contained in
         the index as is feasible; and, in the case of the Small Capitalization
         Stock Portfolio to duplicate the investment performance of the Russell
         2000 Small Stock Index;
 
      3) invest in commodities or purchase real estate, although it may purchase
         securities of companies which deal in real estate or interests therein,
         and that each Portfolio may invest in stock index futures contracts,
         stock options and options on stock index futures contracts to that
         extent that not more than 5% of the Portfolio's assets are required as
         margin deposit for futures contracts and not more than 20% of a
         Portfolio's assets are invested in futures and options at any time;
 
      4) lend money to any person except (i) by purchasing a portion of an issue
         of short-term debt securities or similar obligations (including
         repurchase agreements) which are publicly distributed or customarily
         purchased by institutional investors, and (ii) as provided under
         "Lending of Securities";
 
      5) purchase securities on margin or sell securities short, except as set
         forth in paragraph 3 above;
 
      6) with respect to 75% of net assets, purchase more than 10% of the
         outstanding voting securities of any company;
 
      7) with respect to 75% of its assets, purchase securities of any issuer
         (except obligations of the United States Government and its
         instrumentalities), if, as a result, more than 5% of the value of the
         Portfolio's total assets would be invested in the securities of such
         issuer;
 
      8) 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
         exceeding 15% of its net assets (including the amount borrowed and the
         value of any outstanding reverse repurchase agreements) at the time the
         borrowing is made. Whenever a borrowing exceeds 5% of a Portfolio's net
         assets, the Portfolio will not make any additional investments;
 
      9) pledge, mortgage, or hypothecate any of its assets to an extent greater
         than 5% of the value of its total assets;
 
     10) engage in the business of underwriting securities issued by other
         persons except to the extent that a Portfolio may technically be deemed
         an underwriter under the Securities Act of 1933, as amended, in
         disposing of portfolio securities;
 
     11) 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
         (included in this limitation is the Trust's investment in The Vanguard
         Group, Inc.);
 
                                        5
<PAGE>   73
 
     12) invest for the purpose of controlling management of any company;
 
     13) 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 Portfolio's shareholders, or otherwise to the extent
         permitted by Section 12 of the Investment Company Act of 1940. The
         Portfolio will invest only in investment companies which have
         investment objectives and investment policies consistent with those of
         the Portfolio;
 
     14) invest more than 25% of the value of its total assets in any one
         industry; or
 
     15) invest in put, call, straddle or spread options or in interests in oil,
         gas or other mineral exploration or development programs, except as set
         forth in limitation number "3", above.
 
     The above-mentioned investment limitations are considered at the time
investment securities are purchased. Notwithstanding these limitations, the
Trust may own all or any portion of the securities of, or make loans to, or
contribute to the costs or other financial requirements of any company which
will be wholly owned by the Trust and one or more other investment companies and
is primarily engaged in the business of providing, at-cost, management,
administrative, distribution or related services to the Trust and other
investment companies. See "The Vanguard Group". Each Portfolio of the Trust may
not invest more than 5% of its total assets in securities of companies which
have (with predecessors) a record of less than three years' of continuous
operation. Additionally, each Portfolio of the Trust will not purchase or retain
securities of an issuer if those Officers and Trustees of the Trust owning more
than 1/2 of 1% of such securities together own more than 5% of such securities.
These are non-fundamental policies which may be changed by the vote of a
majority of the Trustees.
 
                               PURCHASE OF SHARES
 
     The Trust reserves the right in its sole discretion (i) to suspend the
offerings of its shares, (ii) to reject purchase or exchange purchase orders
when in the judgment of management such rejection is in the best interest of the
Trust, and (iii) to reduce or waive the minimum for initial and subsequent
investments for certain fiduciary accounts or under circumstances where certain
economies can be achieved in sales of the Trust's shares.
 
     EXCHANGE OF SECURITIES FOR SHARES OF THE TRUST  In certain circumstances,
shares of the Trust's Portfolios may be purchased in exchange for a minimum
value of $1 million in common stocks. Such common stocks must be included in the
appropriate Index and each position must have a market value in excess of
$10,000. Additionally, such securities will be acquired by a Portfolio of the
Trust for investment purpose and not for resale and must be liquid securities
which are not restricted as to transfer and have a value which is readily
ascertainable as evidenced by a listing on the American Stock Exchange, the New
York Stock Exchange or NASDAQ. Securities accepted by the Portfolio will be
valued as set forth under "The Share Price of Each Portfolio" in the Trust's
prospectus as of the time of the next determination of net asset value after
such acceptance. Shares of each Portfolio of the Trust are issued at net asset
value determined as of the same time. "IN-KIND" PURCHASES OF THE EXTENDED MARKET
PORTFOLIO, SMALL CAPITALIZATION STOCK AND THE TOTAL STOCK MARKET PORTFOLIO WILL
NOT BE SUBJECT TO THE 1% AND 0.25% TRANSACTION FEES. All dividends,
subscription, or other rights which are reflected in the market price of
accepted securities at the time of valuation become the property of the
Portfolio and must be delivered to the Portfolio by the investor upon receipt
from the issuer. A gain or loss for Federal income tax purposes would be
realized by the investor upon the exchange depending upon the cost of the
securities tendered.
 
     The Portfolio will not accept securities in exchange unless: (1) such
securities are, at the time of the exchange, included in the Portfolio; (2) such
an exchange will not cause the Portfolio's weightings to come imbalanced with
respect to the weightings of the stocks included in the Index; (3) the investor
represents and agrees that all securities offered to the Portfolio are not
subject to any restrictions upon their sale by the Portfolio under the
Securities Act of 1933, or otherwise; (4) such securities are traded in an
unrelated transaction with a quoted sales price on the same day the exchange
valuation is made; (5) the quoted sales price used as a basis of valuation is
representative (i.e., one that does not involve a trade of substantial size
 
                                        6
<PAGE>   74
 
which artificially influences the price of the security); and (6) the value of
any such security being exchanged will not exceed 5% of the Portfolio's net
assets immediately prior to the transaction.
 
     Investors interested in such purchases should contact the Trust.
 
                              REDEMPTION OF SHARES
 
     Each Portfolio may suspend redemption privileges or postpone the date of
payment (i) during any period that the New York Stock Exchange 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 Trust to 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.
 
     No charge is made by the Trust for redemptions. Any redemption may be more
or less than the shareholder's cost depending on the market value of the
securities held by each Portfolio.
 
     The Trust 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% of the net assets of a Portfolio
at the beginning of such period. Such committment 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
Trustees may deem advisable; however, payment will be made wholly in cash unless
the Trustees believe that economic or market conditions exist which would make
such a practice detrimental to the best interests of the Trust. 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.
 
                             YIELD AND TOTAL RETURN
 
   
     The yield of the 500 Portfolio of the Trust for the 30 day period ended
June 30, 1994 was 2.78%. The yield of the Extended Market Portfolio of the Trust
for the 30 day period ended June 30, 1994 was 1.53%. The yield of the Total
Stock Market Portfolio of the Trust for the 30 day period ended June 30, 1994
was 2.36%. The yield of the Value Portfolio for the 30 day period ended June 30,
1994 was 3.27%. The yield of the Growth Portfolio for the 30 day period ended
June 30, 1994 was 2.19%. The yield of the Small Capitalization Stock Portfolio+
for the 30 day period ended June 30, 1994 was 1.29%.
    
 
   
     The average annual total return of the 500 Portfolio* for the one, five and
ten year periods ended June 30, 1994 was +1.20%, +10.06% and +14.72%,
respectively. The average annual total return for the Extended Market
Portfolio** for the one and five year periods ended June 30, 1994 and since the
Portfolio's inception on December 21, 1987 was +1.32%, +9.15% and +12.59%,
respectively. The average annual total return of the Total Stock Market
Portfolio*** for the period ended June 30, 1994, and since the Portfolio's
inception on April 27, 1992 was +0.50% and +7.12%. The average annual total
return of the Value Portfolio* for the period ended June 30, 1994 and since
inception on November 2, 1992 was +2.94% and +11.46%. The average annual total
return of the Growth Portfolio* for the period ended June 30, 1994 and since
inception on November 2, 1992 was -0.57% and -0.09%. The average annual return
of the Small Capitalization Stock Portfolio** for the one, five and ten year
periods ended June 30, 1994 was +4.33%, +9.15% and +8.49%, respectively. Total
return is computed by finding the average compounded rates of return over the
one, five and ten year periods set forth above that would equate an initial
amount invested at the beginning of the periods to the ending redeemable value
of the investment.
    
- ---------------
   
  * Total return figures are adjusted to reflect the $10 annual account
    maintenance fee.
    
 ** Total return figures for the Extended Market and the Small Capitalization
    Stock Portfolios reflect the 1% portfolio transaction fee and the $10 annual
    account maintenance fee.
*** Total return figures for the Total Stock Market Portfolio reflect the 0.25%
    portfolio transaction fee and the $10 annual account maintenance fee.
 + Formerly Vanguard Small Capitalization Stock Fund, Inc.
 
                                        7
<PAGE>   75
 
                            MANAGEMENT OF THE TRUST
 
TRUSTEES AND OFFICERS
 
     The Officers of the Trust manage its day-to-day operations and are
responsible to the Trust's Board of Trustees. The Trustees set broad policies
for the Trust and choose its Officers. The following is a list of the Trustees
and Officers of the Trust and a statement of their present positions and
principal occupations during the past five years. The mailing address of the
Trustees and Officers of the Trust is Post Office Box 876, Valley Forge, PA
19482.
 
JOHN C. BOGLE, Chairman, Chief Executive Officer and Trustee*
     Chairman, Chief Executive Officer, and Director of The Vanguard Group,
     Inc., and of each of the investment companies in The Vanguard Group.
     Director of The Mead Corporation and General Accident Insurance.
 
JOHN J. BRENNAN, President & Trustee*
     President and Director of The Vanguard Group, Inc. and of each of the
     investment companies in The Vanguard Group.
 
ROBERT E. CAWTHORN, Trustee
     Chairman and Chief Executive Officer, Rhone-Poulenc Rorer, Inc.; Director
     of Immune Response Corp. and Sun Company, Inc.; Trustee, Universal Health
     Realty Income Trust.
 
BARBARA BARNES HAUPTFUHRER, Trustee
     Director of The Great Atlantic and Pacific Tea Company. Alco Standard
     Corp., Raytheon Company, Knight-Ridder Inc., and Massachusetts Mutual Life
     Insurance Co.
 
BRUCE K. MACLAURY, Trustee
   
     President, The Brookings Institution; Director of American Express Bank,
     Ltd., The St. Paul Companies, Inc., and Scott Paper Co.
    
 
BURTON G. MALKIEL, Trustee
     Chemical Bank Chairmen's Professor of Economics, Princeton University;
     Director of Prudential Insurance Co. of America, Amdahl Corporation, Baker
     Fentress & Co., Jeffrey Co., and The Southern New England Telephone
     Company.
 
   
ALFRED M. RANKIN, JR., Trustee
    
     President, Chief Executive Officer and Director of NACCO Industries, Inc.;
     Director of The BFGoodrich Company, The Standard Products Company and The
     Reliance Electric Company.
 
JOHN C. SAWHILL, Trustee
     President and Chief Executive Officer, The Nature Conservancy; formerly,
     Director and Senior Partner, McKinsey & Co.; President, New York
     University; Director of Pacific Gas and Electric Company and NACCO
     Industries.
 
   
JAMES O. WELCH, JR., Trustee
    
     Retired Chairman of Nabisco Brands, Inc. retired Vice Chairman and Director
     of RJR Nabisco; Director of TECO Energy, Inc.
 
J. LAWRENCE WILSON, Trustee
   
     Chairman and Chief Executive Officer of Rohm & Haas Company; Director of
     Cummins Engine Company; Trustee of Vanderbilt University and the Culver
     Educational Foundation.
    
 
RAYMOND J. KLAPINSKY, Secretary*
     Senior Vice President and Secretary of The Vanguard Group, Inc.; Secretary
     of each of the investment companies in The Vanguard Group.
 
RICHARD F. HYLAND, Treasurer*
     Treasurer of The Vanguard Group, Inc. and of each of the investment
     companies in The Vanguard Group.
 
KAREN E. WEST, Controller*
     Vice President of The Vanguard Group, Inc.; Controller of each of the
     investment companies in The Vanguard Group.
- ---------------
 
*Officers of the Trust are "interested persons" as defined in the Investment
 Company Act of 1940.
 
THE VANGUARD GROUP, INC.
 
   
     Vanguard Index Trust is a member of the Vanguard Group of Investment
companies which consists of over 30 investment companies. Through their
jointly-owned subsidiary, The Vanguard Group, Inc. ("Vanguard"), the Trust and
the other Funds in the Group obtain at cost virtually all of their corporate
    
 
                                        8
<PAGE>   76
 
management, administrative and distribution services. Vanguard also provides
investment advisory services on an at-cost basis to several of the Vanguard
Funds.
 
     Vanguard employs a supporting staff of management and administrative
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 total expenses which are allocated among the
Funds under methods approved by the Board of Trustees (Directors) of each Fund.
In addition, each Fund bears its own direct expenses such as legal, auditing and
custodian fees.
 
     The Fund's Officers are Officers of Vanguard. No Officer or employee owns,
or is permitted to own, any securities of any external adviser for the Funds.
 
   
     The Vanguard Group was established and operates under a Funds' Service
Agreement which was approved by the shareholders of each of the Funds. The
Funds' Service Agreement provides as follows: (a) each aggregate Vanguard Fund
may invest up to .40% of its current assets in Vanguard, and (b) there is no
limitation on the amount that the Vanguard Funds may contribute to Vanguard's
capitalization. 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. At
December 31, 1993 and for the six months ended June 30, 1994 the Trust had
contributed capital of $1,590,000* and $1,754,000, respectively, to Vanguard,
representing 7.9% and 8.8%, respectively, of Vanguard's capitalization.
    
 
   
     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 Funds by third parties. During the
fiscal year ended December 31, 1993 and for the six months ended June 30, 1994
the Trust's share of Vanguard's actual net costs of operation relating to
management and administrative services (including transfer agency) totaled
approximately $13,291,000* and $7,646,000, respectively.
    
 
     DISTRIBUTION  Vanguard provides all distribution and marketing activities
for the Funds in the Group. Vanguard Marketing Corporation, a wholly-owned
subsidiary of The Vanguard Group, Inc., acts as Sales Agent for the shares of
the Funds in connection with any sales made directly to investors in the states
of Florida, Missouri, New York, Ohio, Texas and such other states as it may be
required.
 
     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 Funds based upon relative net assets. The remaining
one-half of those expenses is allocated among the 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 average distribution expense rate for the Group, and that
no Fund shall incur annual distribution expenses in excess of 20/100 of l% of
its average month-end net assets. During the fiscal year ended December 31, 1993
and the six months ended June 30, 1994 the Trust paid approximately $2,327,000*
and $1,168,000, respectively, of the Group's distribution and marketing
expenses.
    
 
     INVESTMENT ADVISORY SERVICES  Vanguard also provides investment advisory
services to Vanguard Municipal Bond Fund, Vanguard Admiral Funds, Vanguard
Balanced Index Fund, several Portfolios of Vanguard Variable Insurance Fund,
Vanguard Bond Index Fund, Vanguard International Equity Index Fund, Vanguard
Institutional Index Fund, Vanguard Money Market Reserves, Vanguard Institutional
Portfolios, several Portfolios of Vanguard Fixed Income Securities Fund and the
Vanguard State Tax-Free Funds (California, Florida, New Jersey, New York, Ohio
and Pennsylvania). These services are provided on an at-cost basis from money
 
                                        9
<PAGE>   77
 
management staff employed directly by Vanguard. The compensation and other
expenses of this staff are paid by the Funds utilizing these services.
 
     REMUNERATION OF TRUSTEES AND OFFICERS  The Trust pays each Trustee, who is
not also an Officer, an annual fee plus travel and other expenses incurred in
attending Board meetings. The Trust's Officers and employees are paid by
Vanguard which, in turn, is reimbursed by the Trust and each other Fund in the
Group, for its proportionate share of Officers' and employees' salaries and
retirement benefits.
 
     During the fiscal year ended December 31, 1993, the Trust paid
approximately $1,000 in Trustees' fees and expenses. The Trust's proportionate
share of remuneration paid by Vanguard (and reimbursed by the Trust) during the
year to John C. Bogle, Chairman and Chief Executive Officer of the Trust and
John J. Brennan, President of the Trust was $224,974* and $65,920* respectively,
and its proportionate share of compensation paid to all Officers of the Trust,
as a group, was approximately $391,220.
 
     Upon retirement, Trustees who are not Officers receive an annual fee of
$1,000 for each year of service on the Board up to a maximum of $15,000. Under
its retirement plan, Vanguard contributes annually an amount equal to 10% of
each Officer's annual compensation plus 7% of that part of the Officer's
compensation during the year, if any, that exceeds the Social Security Taxable
Wage Base then in effect. The Trust's proportionate share of retirement
contributions made by Vanguard on behalf of all Officers of the Trust, as a
group, during the 1993 fiscal year was approximately $48,493.*
 
*Does not include the Small Capitalization Stock Portfolio, formerly Vanguard
Small Capitalization Stock Fund, Inc.
 
                             PORTFOLIO TRANSACTIONS
 
     In placing portfolio transactions, the Trust uses 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 are 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 will be given to
those brokers which supply statistical information and provide other services in
addition to execution services to the Trust.
 
     Since the Trust does not market its shares through intermediary brokers or
dealers, it is not the Trust'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 Trust may place portfolio orders with qualified
broker-dealers who recommend the Trust to clients, and may, when a number of
brokers and dealers can provide best price and execution on a particular
transaction, consider the sale of Trust shares by a broker or dealer in
selecting among broker-dealers.
 
     During the years ended December 31, 1991, 1992 and 1993 the Trust paid
brokerage commissions of $1,038,742*, $1,239,271*, and $1,454,492*,
respectively.
 
*Does not include the Small Capitalization Stock Portfolio (formerly Vanguard
Small Capitalization Stock Fund, Inc.).
 
                    DESCRIPTION OF SHARES AND VOTING RIGHTS
 
     The Declaration of Trust permits the Trustees to issue an unlimited number
of shares of beneficial interest, without par value, from an unlimited number of
classes ("Portfolios") of shares. Currently the Trust is offering shares of six
Portfolios.
 
     The shares of the Trust are fully paid and nonassessable, except as set
forth under "Shareholder and Trustee Liability," and have no preference as to
conversion, exchange, dividends, retirement or other features. The shares of the
Trust have no pre-emptive rights. The shares of the Trust have non-cumulative
voting rights, which means that the holders of more than 50% of the shares
voting for the election of Trustees can elect 100% of the Trustees if they
choose to do so. A shareholder is entitled to one vote for each full share held
(and a fractional vote for each fractional share held), then standing in his
name on the books of the Trust. On any matter submitted to a vote of
shareholders, all shares of the Trust then issued and outstanding and entitled
to vote, irrespective of the class, shall be voted in the aggregate and not by
class: except (i) when required by the Investment Company Act of 1940, shares
shall be voted by individual class; and (ii) when the matter does not
 
                                       10
<PAGE>   78
 
affect any interest of a particular class, then only shareholders of the
affected class or classes shall be entitled to vote thereon.
 
The Trust will continue without limitation of time, provided however that:
 
     1) Subject to the majority vote of the holders of shares of any Portfolio
        of the Trust outstanding, the Trustees may sell or convert the assets of
        such Portfolio to another investment company in exchange for shares of
        such investment company and distribute such shares ratably among the
        shareholders of such Portfolio;
 
     2) Subject to the majority vote of shares of any Portfolio of the Trust
        outstanding, the Trustees may sell and convert into money the assets of
        such Portfolio and distribute such assets ratably among the shareholders
        of such Portfolio; and
 
     3) Without the approval of the shareholders of any Portfolio, unless
        otherwise required by law, the Trustees may combine the assets of any
        two or more Portfolios into a single Portfolio so long as such
        combination will not have a material adverse effect upon the
        shareholders of such Portfolio.
 
     Upon completion of the distribution of the remaining proceeds or the
remaining assets of any Portfolio as provided in paragraphs 1), 2), 3) above the
Trust shall terminate as to that Portfolio and the Trustees shall be discharged
of any and all further liabilities and duties hereunder and the right, title and
interest of all parties shall be cancelled and discharged.
 
     SHAREHOLDER AND TRUSTEE LIABILITY Under Pennsylvania law, shareholders of
such a Trust may, under certain circumstances, be held personally liable as
partners for the obligations of the Trust. Therefore, the Declaration of Trust
contains an express disclaimer of shareholder liability for acts or obligations
of the Trust and requires that notice of such disclaimer be given in each
agreement, obligation, or instrument entered into or executed by the Trust or
the Trustees. The Declaration of Trust provides for indemnification out of the
Trust property of any shareholder held personally liable for the obligations of
the Trust. The Declaration of Trust also provides that the Trust shall, upon
request, assume the defense of any claim against any shareholder for any act or
obligation of the Trust and satisfy any judgment thereon. Thus, the risk of a
shareholder incurring financial loss on account of shareholder liability is
limited to circumstances in which the Trust itself would be unable to meet its
obligations.
 
     The Declaration of Trust further provides that the Trustees will not be
liable for errors of judgment or mistakes of fact or law, but nothing in the
Declaration of Trust protects a Trustee against any liability to which he would
otherwise be subject by reason of willful misfeasance, bad faith, gross
negligence, or reckless disregard of the duties involved in the conduct of his
office.
 
                              PERFORMANCE MEASURES
 
     Each of the investment company members of the Vanguard Group, including
Vanguard Index Trust, may from time to time, use one or more of the following
unmanaged indices for comparative performance purposes.
 
STANDARD & POOR'S 500 COMPOSITE STOCK PRICE INDEX -- is a well diversified list
of 500 companies representing the U.S. Stock Market.
 
STANDARD & POOR'S/BARRA VALUE INDEX -- contains common stocks of the S&P 500
Index which have lower than average price-to-book ratios.
 
STANDARD & POOR'S/BARRA GROWTH INDEX -- contains common stocks of the S&P 500
Index which have higher than average price-to-book ratios.
 
WILSHIRE 5000 EQUITY INDEXES -- consists of nearly 5,000 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 & Poor's 500 Index.
 
RUSSELL 2000 INDEX -- is composed of approximately 2,000 small capitalization
stocks.
 
                                       11
<PAGE>   79
 
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
preferred. 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.
 
SALOMON BROTHERS BROAD INVESTMENT-GRADE BOND -- is a market-weighted index that
contains approximately 4700 individually priced investment-grade corporate bonds
rated BBB or better, U.S. Treasury/agency issues and mortgage passthrough
securities.
 
SHEARSON 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.
 
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.
 
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.
 
                              FINANCIAL STATEMENTS
 
   
     The Trust's Financial Statements for the year ended December 31, 1993,
including the financial highlights for each of the respective periods presented,
appearing in the Vanguard Index Trust 1993 Annual Report to Shareholders and
inserts thereto, and the reports thereon of Price Waterhouse LLP, independent
accountants, also appearing therein, are incorporated by reference in this
Statement of Additional Information. The Trust's 1993 Annual Report and 1994
Semi-Annual Report to Shareholders and inserts thereto, are enclosed with this
Statement of Additional Information. The audited financial statements and the
financial highlights for each of the respective periods presented, appearing in
the Vanguard Small Capitalization Stock Fund, Inc. 1993 Annual Report to
Shareholders, and the report thereon of Price Waterhouse LLP, independent
accountants, also appearing therein, are incorporated by reference in this
Statement of Additional Information. The Trust's unaudited financial statements
for the six months ended June 30, 1994 appearing in the Trust's June 30, 1994
Semi-Annual Report to Shareholders are also incorporated by reference in this
Statement of Additional Information.
    
 
                                       12
<PAGE>   80
 
                                     PART C
                              VANGUARD INDEX TRUST
                               OTHER INFORMATION
 
ITEM 24. FINANCIAL STATEMENTS AND EXHIBITS
     (A) FINANCIAL STATEMENTS
 
   
     The Trust's Financial Statements for the year ended December 31, 1993,
including the financial highlights for each of the respective periods presented,
appearing in the Vanguard Index Trust 1993 Annual Report to Shareholders and
inserts thereto, and the reports thereon of Price Waterhouse LLP, independent
accountants, also appearing therein, are incorporated by reference in this
Statement of Additional Information. The Trust's unaudited financial statements
for the six months ended June 30, 1994 appearing in the Trust's 1994 Semi-Annual
Report to Shareholders are also incorporated by reference in the Statement of
Additional Information. The Financial Statements included in the Annual Report
and Semi-Annual Report are:
    
 
   
     1. Statement of Net Assets as of December 31, 1993 and June 30, 1994.
    
   
     2.Statement of Operations for the year ended December 31, 1993 and the six
       months ended June 30, 1994.
    
   
     3. Statement of Changes in Net Assets for each of the two years in the
        period ended December 31, 1993 and the six months ended June 30, 1994.
    
   
     4. Financial Highlights for each of the five years in the period ended
        December 31, 1993 and June 30, 1994.
    
     5. Notes to Financial Statements.
     6. Reports of Independent Accountants.
 
     (B) EXHIBITS
 
      1. Articles of Declaration of Trust**
      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
      8. Form of Custody Agreement**
      9. Form of Vanguard Service Agreement**
     10. Opinion of Counsel**
     11. Consent of Independent Accountants*
     12. Financial Statements -- reference is made to (a) above
     13. Not Applicable
     14. Not Applicable
     15. Not Applicable
     16. Schedule for Computation of Performance Quotations*
- ---------------
 * Filed herewith
** Previously filed.
 
   
     The Vanguard Small Capitalization Stock Fund's Financial Statements for the
year ended September 30, 1993, including the financial highlights for each of
the respective periods presented, appearing in the Vanguard Small Capitalization
Stock Fund's 1993 Annual Report to Shareholders, and the reports thereon of
Price Waterhouse LLP, independent accountants, also appearing therein, are
incorporated by reference in this Statement of Additional Information. The
Portfolio's unaudited financial statements for the six months ended June 30,
1994 appearing in the Vanguard Index Trust's 1994 Semi-Annual Report to
Shareholders are also
    
<PAGE>   81
 
   
incorporated by reference in the Statement of Additional Information. The
Financial Statements included in the Annual Report and Semi-Annual Report are:
    
 
   
     1. Statement of Net Assets as of September 30, 1993 and June 30, 1994.
    
   
     2. Statement of Operations for the year ended September 30, 1993 and the 
        six months ended June 30, 1994.
    
   
     3. Statement of Changes in Net Assets for each of the two years in the
        period ended September 30, 1993 and the six months ended June 30, 1994.
    
   
     4. Financial Highlights for each of the five years in the period ended
        September 30, 1993 and the six months ended June 30, 1994.
    
     5. Notes to Financial Statements.
     6. Report of Independent Accountants.
 
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 32 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
 
     As of December 31, 1993 there were 385,270 shareholders of the 500
Portfolio, 37,335 shareholders of the Extended Market Portfolio, 24,420
shareholders of the Total Stock Market Portfolio, 11,081 shareholders of the
Value Portfolio, 5,143 shareholders of the Growth Portfolio and 26,040
shareholders of Vanguard Small Capitalization Stock Fund, Inc. as of September
30, 1993.
 
ITEM 27. INDEMNIFICATION
 
     Reference is made to Article XI of Registrant's Declaration of Trust.
 
     Insofar as indemnification for liability arising under the Securities Act
of 1933 may be permitted to 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 director, 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 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
 
     Investment advisory services are provided to the Registrant on an at-cost
basis by The Vanguard Group, Inc., a jointly-owned subsidiary of the Registrant
and the other Funds in the Group. See the information concerning The Vanguard
Group set forth in Parts A and B.
 
ITEM 29. PRINCIPAL UNDERWRITERS
 
     (a) None
 
     (b) Not Applicable
<PAGE>   82
 
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, State Street Bank and Trust
Company, 225 Franklin Street, Boston, Massachusetts 02105, and CoreStates Bank,
N.A., Broad and Market Sts., Philadelphia, PA 19103.
 
ITEM 31. MANAGEMENT SERVICES
 
     Other than the Amended and Restated Funds' Service Agreement with The
Vanguard Group, Inc. which was previously filed as Exhibit 9(c) and described
Registrant is not a party of any management-related service contract.
 
ITEM 32. UNDERTAKINGS
 
     Registrant hereby undertakes to comply with the provisions of Section 16(c)
of the Investment Company Act of 1940 in regard to shareholder's rights to call
a meeting of shareholders for the purpose of voting on the removal of trustees
and to assist in shareholder communications in such matters to the extent
required by law.
 
     Registrant hereby undertakes to provide an Annual Report to Shareholders of
prospective investors, free of charge, upon request.
<PAGE>   83
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant has duly caused this
Post-Effective Amendment to 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 7th day of October, 1994.
    
 
     Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment to the Registration Statement has been signed below by
the following persons in the capacities and on the date indicated:
 
BY: John C. Bogle*, Chairman of the Board, Trustee,
    and Chief Executive Officer
   
    October 7, 1994
    
 
BY: John J. Brennan*, Trustee and President
   
    October 7, 1994
    
 
BY: Robert E. Cawthorn*, Trustee
   
    October 7, 1994
    
 
BY: Barbara B. Hauptfuhrer*, Trustee
   
    October 7, 1994
    
 
BY: Bruce K. MacLaury*, Trustee
   
    October 7, 1994
    
 
BY: Burton G. Malkiel*, Trustee
   
    October 7, 1994
    
 
BY: Alfred M. Rankin, Jr.*, Trustee
   
    October 7, 1994
    
 
BY: John C. Sawhill*, Trustee
   
    October 7, 1994
    
 
BY: James O. Welch, Jr.*, Trustee
   
    October 7, 1994
    
 
BY: J. Lawrence Wilson*, Trustee
   
    October 7, 1994
    
 
BY: Richard F. Hyland*, Treasurer and Principal
    Financial Officer and Accounting Officer
   
    October 7, 1994
    
 
*By Power of Attorney. See File Number 2-14336, January 23, 1990. Incorporated
by Reference.
<PAGE>   84
 
                               INDEX TO EXHIBITS
 
   
<TABLE>
<S>                                                                                    <C>
Consent of Independent Accountants...................................................  EX-99.B11
Schedule for Computation of Performance Quotations...................................  EX-99.B16
Financial Data Schedules.............................................................  EX-27
</TABLE>
    

<PAGE>   1
 
   
                                                                       EX-99.B11
    
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
   
     We hereby consent to incorporation by reference in the Combined Prospectus
and the Statement of Additional Information, constituting parts of this amended
Registration Statement on Form N-1A, of our reports dated January 24, 1994 and
October 25, 1993 relating to the financial statements, including the financial
highlights appearing in the 1993 Annual Reports to Shareholders of Vanguard
Index Trust (comprising the 500, Extended Market, Total Stock Market, Value and
Growth Portfolios) and inserts thereto and Vanguard Small Capitalization Stock
Fund, Inc., respectively, which are also incorporated by reference into the
Registration Statement. We also consent to the references to us under the
headings "Financial Highlights" and "General Information" in Prospectus and
"Financial Statements" in the Statement of Additional Information.
    
 
   
PRICE WATERHOUSE LLP
Philadelphia, PA
October 6, 1994
    

<PAGE>   1
 
   
                                                                       EX-99.B16
    
 
               SCHEDULE FOR COMPUTATION OF PERFORMANCE QUOTATIONS
                     VANGUARD INDEX TRUST -- 500 PORTFOLIO
 
1. Average Annual Total Return (As of December 31, 1993)
                 n
        P (1 + T)  = ERV
 
     Where:  P = a hypothetical initial payment of $1,000
             T = average annual total return
             N = number of years
             ERV = ending redeemable value at the end of the period

    EXAMPLE:

      One Year
           P =   $1,000
           T =   9.84%
           N =   1
         ERV =   $1,098.45*
     Five Year
           P =   $1,000
           T =   14.27%
           N =   5
         ERV =   $1,948.18*
      Ten Year
           P =   $1,000
           T =   14.56%
           N =   10
         ERV =   $3,894.18*
 
    *Adjusted for $10 account maintenance fee.
 
2. YIELD (30 Days Ended December 31, 1993)
 
                               a       6
                  Yield = 2[(----- + 1) - 1] -b x 100
                             c x d
 
        Where:   a = dividends and interest paid during the period
                 b = expense ratios during the period (net of reimbursements)
                 c = the average daily number of shares outstanding during 
                     the period
                 d = the maximum offering price per share on the last day of 
                     the period

    Example     a = $18,511,538.95
                b = .190
                c = 185,843,744.806
                d = $43.83
             Yield = 2.55%
<PAGE>   2
 
               VANGUARD INDEX TRUST -- EXTENDED MARKET PORTFOLIO
 
1. Average Annual Total Return (As of December 31, 1993)
                 n
        P (1 + T)  = ERV
 
     Where:  P = a hypothetical initial payment of $1,000
             T = average annual total return
             N = number of years
             ERV = ending redeemable value at the end of the period

    EXAMPLE:

      One Year
           P =   $1,000
           T =   13.30%
           N =   1
         ERV =   $1,132.96*
     Five Year
           P =   $1,000
           T =   13.98%
           N =   5
         ERV =   $1,923.42*
    *Since Inception, December 31, 1987
           P =   $1,000
           T =   14.81%
           N =   since inception 12/21/87
         ERV =   $2,299.46*
 
    *Adjusted for $10 account maintenance fee and 1% portfolio transaction fee.
 
2. YIELD (30 Days Ended December 31, 1993)
                               a       6
                  Yield = 2[(----- + 1) - 1] -b x 100
                             c x d
 
        Where:   a = dividends and interest paid during the period
                 b = expense ratios during the period (net of reimbursements)
                 c = the average daily number of shares outstanding during 
                     the period
                 d = the maximum offering price per share on the last day of 
                     the period

    Example     a = $1,146,608.81
                b = .207
                c = 45,947,573.139
                d = $19.43
             Yield = 1.34%
<PAGE>   3
 
              VANGUARD INDEX TRUST -- TOTAL STOCK MARKET PORTFOLIO
 
1. Average Annual Total Return (As of December 31, 1993)
                 n
        P (1 + T)  = ERV
 
     Where:  P = a hypothetical initial payment of $1,000
             T = average annual total return
             N = number of years
             ERV = ending redeemable value at the end of the period

    EXAMPLE:

           P =   $1,000
           T =   10.29%
           N =   1
         ERV =   $1,100.93**
           P =   $1,000
           T =   12.43%
           N =   *
         ERV =   $1,217.19**
 
     * Since inception March 16, 1992.
    ** Adjusted for $10 account maintenance fee and .25% portfolio transaction
       fee.
 
2. YIELD (30 Days Ended December 31, 1993)
                               a       6
                  Yield = 2[(----- + 1) - 1] -b x 100
                             c x d
 
        Where:   a = dividends and interest paid during the period
                 b = expense ratios during the period (net of reimbursements)
                 c = the average daily number of shares outstanding during 
                     the period
                 d = the maximum offering price per share on the last day of 
                     the period

    Example     a = $1,003,662.96
                b = .212
                c = 42,804,484.283
                d = $11.69
             Yield = 2.21%
<PAGE>   4
 
                    VANGUARD INDEX TRUST -- VALUE PORTFOLIO
 
1. Average Annual Total Return (As of December 31, 1993)
                 n
        P (1 + T)  = ERV
 
     Where:  P = a hypothetical initial payment of $1,000
             T = average annual total return
             N = number of years
             ERV = ending redeemable value at the end of the period

    EXAMPLE:

           P =   $1,000
           T =   18.29%
           N =   1
         ERV =   $1,182.86**
           P =   $1,000
           T =   19.23%
           N =   *
         ERV =   $1,226.55**
 
     * Since inception November 2, 1992.
    ** Adjusted for $10 account maintenance fee.
 
2. YIELD (30 Days Ended December 31, 1993)
                               a       6
                  Yield = 2[(----- + 1) - 1] -b x 100
                             c x d
 
        Where:   a = dividends and interest paid during the period
                 b = expense ratios during the period (net of reimbursements)
                 c = the average daily number of shares outstanding during 
                     the period
                 d = the maximum offering price per share on the last day of 
                     the period

    Example     a = $493,153.12
                b = .217
                c = 15,488,232.534
                d = $11.73
             Yield = 3.06%
<PAGE>   5
 
                    VANGUARD INDEX TRUST -- GROWTH PORTFOLIO
 
1. Average Annual Total Return (As of December 31, 1993)
                 n
        P (1 + T)  = ERV
 
     Where:  P = a hypothetical initial payment of $1,000
             T = average annual total return
             N = number of years
             ERV = ending redeemable value at the end of the period

    EXAMPLE:

           P =   $1,000
           T =   1.42%
           N =   1
         ERV =   $1,014.21**
           P =   $1,000
           T =   3.99%
           N =   *
         ERV =   $1,046.52**
 
     * Since inception November 2, 1992.
    ** Adjusted for $10 account maintenance fee.
 
2. YIELD (30 Days Ended December 31, 1993)
                               a       6
                  Yield = 2[(----- + 1) - 1] -b x 100
                             c x d
 
        Where:   a = dividends and interest paid during the period
                 b = expense ratios during the period (net of reimbursements)
                 c = the average daily number of shares outstanding during 
                     the period
                 d = the maximum offering price per share on the last day of 
                     the period

    Example     a = $91,528.19
                b = .263
                c = 4,875,713.614
                d = $10.20
             Yield = 1.96%
<PAGE>   6
 
                      SMALL CAPITALIZATION STOCK PORTFOLIO
           (FORMERLY VANGUARD SMALL CAPITALIZATION STOCK FUND, INC.)
 
1. Average Annual Total Return (As of September 30, 1993)
                 n
        P (1 + T)  = ERV
 
     Where:  P = a hypothetical initial payment of $1,000
             T = average annual total return
             N = number of years
             ERV = ending redeemable value at the end of the period

    EXAMPLE:

      One Year
           P =   $1,000
           T =   +30.21%
           N =   1
         ERV =   $1,315.99*
     Five Year
           P =   $1
           T =   +12.20%
           N =   5
         ERV =   $1,803.08*
      Ten Year
           P =   $1
           T =   +5.85%
           N =   10
         ERV =   $1,795.51*
 
    *Net of $10 account maintenance fee.
 
2. YIELD (30 Days Ended September 30, 1993)
                               a       6
                  Yield = 2[(----- + 1) - 1] -b x 100
                             c x d
 
        Where:   a = dividends and interest paid during the period
                 b = expense ratios during the period (net of reimbursements)
                 c = the average daily number of shares outstanding during 
                     the period
                 d = the maximum offering price per share on the last day of 
                     the period

    Example     a = $464,099.17
                b = $.15
                c = 26,052,447.535
                d = $16.22
             Yield = 1.17%

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
                                              EX-27.1
</LEGEND>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
   <NUMBER> 1
   <NAME> 500 PORTFOLIO
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1994
<PERIOD-START>                             JAN-01-1994
<PERIOD-END>                               JUN-30-1994
<INVESTMENTS-AT-COST>                        7,617,435
<INVESTMENTS-AT-VALUE>                       8,430,650
<RECEIVABLES>                                   81,540
<ASSETS-OTHER>                                   1,362
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               8,513,552
<PAYABLE-FOR-SECURITIES>                        19,927
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       60,926
<TOTAL-LIABILITIES>                             60,926
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     7,597,435
<SHARES-COMMON-STOCK>                          201,693
<SHARES-COMMON-PRIOR>                          188,758
<ACCUMULATED-NII-CURRENT>                       36,521
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        (8,755)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       807,498
<NET-ASSETS>                                 8,432,699
<DIVIDEND-INCOME>                              119,147
<INTEREST-INCOME>                                1,603
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   7,955
<NET-INVESTMENT-INCOME>                        112,795
<REALIZED-GAINS-CURRENT>                        18,598
<APPREC-INCREASE-CURRENT>                    (429,135)
<NET-CHANGE-FROM-OPS>                        (297,742)
<EQUALIZATION>                                   2,502
<DISTRIBUTIONS-OF-INCOME>                       86,732
<DISTRIBUTIONS-OF-GAINS>                        15,455
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         33,070
<NUMBER-OF-SHARES-REDEEMED>                     22,238
<SHARES-REINVESTED>                              2,104
<NET-CHANGE-IN-ASSETS>                         160,002
<ACCUMULATED-NII-PRIOR>                          7,956
<ACCUMULATED-GAINS-PRIOR>                       14,958
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               23
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  7,955
<AVERAGE-NET-ASSETS>                         8,424,732
<PER-SHARE-NAV-BEGIN>                            43.83
<PER-SHARE-NII>                                   0.58
<PER-SHARE-GAIN-APPREC>                         (2.12)
<PER-SHARE-DIVIDEND>                              0.44
<PER-SHARE-DISTRIBUTIONS>                         0.08
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              41.77
<EXPENSE-RATIO>                                   .002
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
                                              EX-27.2
</LEGEND>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
   <NUMBER> 2
   <NAME> EXTENDED MARKET PORTFOLIO
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1994
<PERIOD-START>                             JAN-01-1994
<PERIOD-END>                               JUN-30-1994
<INVESTMENTS-AT-COST>                          849,443
<INVESTMENTS-AT-VALUE>                         921,140
<RECEIVABLES>                                   45,802
<ASSETS-OTHER>                                     149
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 967,091
<PAYABLE-FOR-SECURITIES>                        10,179
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       38,139
<TOTAL-LIABILITIES>                             38,139
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       812,154
<SHARES-COMMON-STOCK>                       50,503,083
<SHARES-COMMON-PRIOR>                       47,768,420
<ACCUMULATED-NII-CURRENT>                        6,630
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         29,213
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        70,776
<NET-ASSETS>                                   918,773
<DIVIDEND-INCOME>                                7,361
<INTEREST-INCOME>                                  355
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     939
<NET-INVESTMENT-INCOME>                          6,777
<REALIZED-GAINS-CURRENT>                        29,340
<APPREC-INCREASE-CURRENT>                     (91,471)
<NET-CHANGE-FROM-OPS>                         (56,377)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                         6,869
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          7,020
<NUMBER-OF-SHARES-REDEEMED>                      4,609
<SHARES-REINVESTED>                                324
<NET-CHANGE-IN-ASSETS>                         (9,198)
<ACCUMULATED-NII-PRIOR>                          (147)
<ACCUMULATED-GAINS-PRIOR>                        6,754
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               45
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    939
<AVERAGE-NET-ASSETS>                           942,541
<PER-SHARE-NAV-BEGIN>                            19.43
<PER-SHARE-NII>                                   0.13
<PER-SHARE-GAIN-APPREC>                         (1.23)
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                         0.14
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              18.19
<EXPENSE-RATIO>                                  0.002
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
                                              EX-27.3
</LEGEND>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
   <NUMBER> 3
   <NAME> TOTAL STOCK MARKET PORTFOLIO
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1994
<PERIOD-START>                             JAN-01-1994
<PERIOD-END>                               JUN-01-1994
<INVESTMENTS-AT-COST>                          630,627
<INVESTMENTS-AT-VALUE>                         641,714
<RECEIVABLES>                                    8,995
<ASSETS-OTHER>                                     101
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 650,810
<PAYABLE-FOR-SECURITIES>                         4,535
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        7,021
<TOTAL-LIABILITIES>                              7,021
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       626,401
<SHARES-COMMON-STOCK>                       57,878,194
<SHARES-COMMON-PRIOR>                       43,824,943
<ACCUMULATED-NII-CURRENT>                          644
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          1,440
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        10,769
<NET-ASSETS>                                   639,254
<DIVIDEND-INCOME>                                7,141
<INTEREST-INCOME>                                  252
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     590
<NET-INVESTMENT-INCOME>                          6,803
<REALIZED-GAINS-CURRENT>                         1,380
<APPREC-INCREASE-CURRENT>                     (37,386)
<NET-CHANGE-FROM-OPS>                         (29,203)
<EQUALIZATION>                                     330
<DISTRIBUTIONS-OF-INCOME>                        6,447
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         17,195
<NUMBER-OF-SHARES-REDEEMED>                      3,617
<SHARES-REINVESTED>                                475
<NET-CHANGE-IN-ASSETS>                         126,972
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                           60
<OVERDISTRIB-NII-PRIOR>                           (42)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               45
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    590
<AVERAGE-NET-ASSETS>                           588,388
<PER-SHARE-NAV-BEGIN>                            11.69
<PER-SHARE-NII>                                   0.13
<PER-SHARE-GAIN-APPREC>                         (0.66)
<PER-SHARE-DIVIDEND>                            (0.12)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.04
<EXPENSE-RATIO>                                  0.002
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
                                              EX-27.4
</LEGEND>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
   <NUMBER> 4
   <NAME> VALUE PORTFOLIO
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1994
<PERIOD-START>                             JAN-01-1994
<PERIOD-END>                               JUN-30-1994
<INVESTMENTS-AT-COST>                          296,647
<INVESTMENTS-AT-VALUE>                         289,885
<RECEIVABLES>                                   34,784
<ASSETS-OTHER>                                      46
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 324,715
<PAYABLE-FOR-SECURITIES>                        33,003
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        1,501
<TOTAL-LIABILITIES>                              1,501
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       293,737
<SHARES-COMMON-STOCK>                       25,868,694
<SHARES-COMMON-PRIOR>                       16,197,510
<ACCUMULATED-NII-CURRENT>                        1,122
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          2,114
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       (6,762) 
<NET-ASSETS>                                   290,211
<DIVIDEND-INCOME>                                4,214
<INTEREST-INCOME>                                   76
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     253
<NET-INVESTMENT-INCOME>                          4,037
<REALIZED-GAINS-CURRENT>                         2,206
<APPREC-INCREASE-CURRENT>                     (14,749)
<NET-CHANGE-FROM-OPS>                          (8,506)
<EQUALIZATION>                                     494
<DISTRIBUTIONS-OF-INCOME>                      (3,380)
<DISTRIBUTIONS-OF-GAINS>                       (2,486)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         12,871
<NUMBER-OF-SHARES-REDEEMED>                    (3,663)
<SHARES-REINVESTED>                                463
<NET-CHANGE-IN-ASSETS>                         100,100
<ACCUMULATED-NII-PRIOR>                           (29)
<ACCUMULATED-GAINS-PRIOR>                        2,394
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               20
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    253
<AVERAGE-NET-ASSETS>                           251,829
<PER-SHARE-NAV-BEGIN>                            11.74
<PER-SHARE-NII>                                   0.18
<PER-SHARE-GAIN-APPREC>                         (0.45)
<PER-SHARE-DIVIDEND>                            (0.14)
<PER-SHARE-DISTRIBUTIONS>                       (0.11)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.22
<EXPENSE-RATIO>                                  0.002
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
                                              EX-27.5
</LEGEND>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
   <NUMBER> 5
   <NAME> GROWTH PORTFOLIO
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1994
<PERIOD-START>                             JAN-01-1994
<PERIOD-END>                               JUN-30-1994
<INVESTMENTS-AT-COST>                           59,438
<INVESTMENTS-AT-VALUE>                          57,496
<RECEIVABLES>                                    7,066
<ASSETS-OTHER>                                       9
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  64,571
<PAYABLE-FOR-SECURITIES>                         7,008
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          107
<TOTAL-LIABILITIES>                                107
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        60,200
<SHARES-COMMON-STOCK>                        5,959,132
<SHARES-COMMON-PRIOR>                        4,964,135
<ACCUMULATED-NII-CURRENT>                           48
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (850)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       (1,942)
<NET-ASSETS>                                    57,456
<DIVIDEND-INCOME>                                  648
<INTEREST-INCOME>                                    7
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      54
<NET-INVESTMENT-INCOME>                            601
<REALIZED-GAINS-CURRENT>                         (248)
<APPREC-INCREASE-CURRENT>                      (2,842)
<NET-CHANGE-FROM-OPS>                          (2,489)
<EQUALIZATION>                                      21
<DISTRIBUTIONS-OF-INCOME>                          559
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          1,915
<NUMBER-OF-SHARES-REDEEMED>                      (971)
<SHARES-REINVESTED>                                 51
<NET-CHANGE-IN-ASSETS>                           6,832
<ACCUMULATED-NII-PRIOR>                           (15)
<ACCUMULATED-GAINS-PRIOR>                        (602)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               23
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     54
<AVERAGE-NET-ASSETS>                            54,209
<PER-SHARE-NAV-BEGIN>                            10.20
<PER-SHARE-NII>                                   0.11
<PER-SHARE-GAIN-APPREC>                         (0.57)
<PER-SHARE-DIVIDEND>                            (0.10)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               9.64
<EXPENSE-RATIO>                                  0.002
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
                                              EX-27.6
</LEGEND>
<CIK> 0000036405
<NAME> VANGUARD INDEX TRUST
<SERIES>
   <NUMBER> 6
   <NAME> SMALL CAPITALIZATION STOCK PORTFOLIO
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   5-MOS
<FISCAL-YEAR-END>                          DEC-31-1994
<PERIOD-START>                             FEB-01-1994
<PERIOD-END>                               JUN-30-1994
<INVESTMENTS-AT-COST>                          514,519
<INVESTMENTS-AT-VALUE>                         534,445
<RECEIVABLES>                                   87,474
<ASSETS-OTHER>                                      87
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 622,006
<PAYABLE-FOR-SECURITIES>                        63,999
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       21,508
<TOTAL-LIABILITIES>                             21,508
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       501,416
<SHARES-COMMON-STOCK>                       36,143,666
<SHARES-COMMON-PRIOR>                       26,614,965
<ACCUMULATED-NII-CURRENT>                        3,115
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         12,354
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        19,614
<NET-ASSETS>                                   536,499
<DIVIDEND-INCOME>                                3,131
<INTEREST-INCOME>                                  166
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     402
<NET-INVESTMENT-INCOME>                          2,895
<REALIZED-GAINS-CURRENT>                        12,693
<APPREC-INCREASE-CURRENT>                     (65,764)
<NET-CHANGE-FROM-OPS>                         (50,176)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          6,014
<NUMBER-OF-SHARES-REDEEMED>                    (2,716)
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                           3,110
<ACCUMULATED-NII-PRIOR>                          3,644
<ACCUMULATED-GAINS-PRIOR>                       22,163
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               30
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    402
<AVERAGE-NET-ASSETS>                           532,962
<PER-SHARE-NAV-BEGIN>                            16.24
<PER-SHARE-NII>                                   0.08
<PER-SHARE-GAIN-APPREC>                         (1.48)
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.84
<EXPENSE-RATIO>                                  0.002
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>


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