VANGUARD INDEX TRUST
497, 1994-04-05
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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
 
P        R        O        S        P        E       C       T       U       S

                                APRIL 4, 1994
 
<PAGE>
 
===============================================================================
                                                A Member of The Vanguard Group
===============================================================================
PROSPECTUS--APRIL 4, 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 OBJECTIVE AND POLICIES
                 Vanguard Index Trust (the "Trust") is an open-end diversified
                 investment company designed as an "index" fund. THE TRUST
                 CONSISTS OF SIX PORTFOLIOS: THE 500, EXTENDED MARKET, TOTAL
                 STOCK MARKET, SMALL CAPITALIZATION STOCK, VALUE AND GROWTH
                 PORTFOLIOS. Each of the Portfolios invests in 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 8:00 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). A portfolio transaction
                 fee of 1% is deducted from purchases of the Extended Market
                 and Small Capitalization Stock Portfolios; a 0.25% portfolio
                 transaction fee is deducted from purchases of the Total Stock
                 Market Portfolio. Portfolio transaction fees are paid to the
                 Portfolios to offset transaction costs of buying securities
                 of small- and medium-sized companies. Shareholders in each
                 Portfolio will also incur a $10 annual account maintenance
                 fee, deducted from the Portfolio's dividend. See "Trust
                 Expenses."
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ABOUT THIS PROSPECTUS
                 This Prospectus is designed to set forth concisely the
                 information you should know about the Trust before you
                 invest. It should be retained for future reference. A
                 "Statement of Additional Information" containing additional
                 information about the Trust has been filed with the
                 Securities and Exchange Commission. This Statement is dated
                 April 4, 1994 and has been incorporated by reference into
                 this Prospectus. A copy may be obtained without charge by
                 writing to the Trust or by calling the Investor Information
                 Department.
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<TABLE>
TABLE OF CONTENTS
<CAPTION>
                                    Page                                        Page                                        Page
<C>                                         <C>                                         <C>            
Highlights..........................  2     Implementation of Policies.......... 16                SHAREHOLDER GUIDE
Trust Expenses......................  4     Investment Limitations.............. 21     Opening an Account and
Financial Highlights................  6     Management of the Trust............. 21       Purchasing Shares................. 27
Yield and Total Return..............  9     Investment Adviser.................. 22     When Your Account Will Be
            FUND INFORMATION                Performance Record.................. 22       Credited.......................... 30
Investment Objectives............... 10     Dividends, Capital Gains and Taxes.. 24     Selling Your Shares................. 31
Investment Policies................. 12     The Share Price of Each Portfolio... 25     Exchanging Your Shares.............. 32
Investment Risks.................... 13     General Information................. 26     Important Information About
Who Should Invest................... 14                                                   Telephone Transactions............ 33
                                                                                        Transferring Registration........... 34
                                                                                        Other Vanguard Services............. 34
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</TABLE> 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE COMMISSION PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
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<PAGE>
 
                                  HIGHLIGHTS
OBJECTIVE AND POLICIES
                 The Trust is an open-end diversified investment company
                 designed as an "index" fund. Shares of the Trust are offered
                 on a no-load basis, although the Trust incurs certain
                 distribution expenses. The Trust consists of six separate
                 Portfolios, each of which invests in common stocks in order
                 to match the performance of a selected market index. There is
                 no assurance, however, that the Trust will achieve its stated
                 objective.                                            Page 10
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SIX SEPARATE PORTFOLIOS
                 Investors may choose to invest in any of six Portfolios of
                 the Trust:
 
                 500 PORTFOLIO--seeks to match the investment performance of
                 the Standard & Poor's 500 Composite Stock Price Index, an
                 index emphasizing large-capitalization stocks.
 
                 EXTENDED MARKET PORTFOLIO--seeks to match the investment
                 performance of the Wilshire 4500 Index, an index consisting 
                 of medium- and small-capitalization stocks.
 
                 TOTAL STOCK MARKET PORTFOLIO--seeks to match the investment
                 performance of the Wilshire 5000 Index, an index consisting
                 of all regularly and publicly traded U.S. stocks.
 
                 SMALL CAPITALIZATION STOCK PORTFOLIO--seeks to match the
                 investment performance of the Russell 2000 Small Stock Index,
                 an index consisting of 2,000 small-capitalization common
                 stocks.
 
                 VALUE PORTFOLIO--seeks to match the investment performance of
                 the S&P/BARRA Value Index, an index consisting of stocks
                 selected from the Standard & Poor's 500 Index with lower than
                 average ratios of market price to book value.
 
                 GROWTH PORTFOLIO--seeks to match the investment performance
                 of the S&P/BARRA Growth Index, an index consisting of stocks
                 selected from the Standard & Poor's 500 Index with higher
                 than average ratios of market price to book value.    Page 12
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RISK CHARACTERISTICS
                 As mutual funds investing in common stocks, all six
                 Portfolios of the Trust are subject to market risk, which is
                 the possibility that common stock prices will decline,
                 sometimes substantially, over short or extended periods. Due
                 to differences in the securities they hold, the six
                 Portfolios may exhibit varying levels of volatility.  Page 13
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THE VANGUARD GROUP
                 The Trust is a member of The Vanguard Group of Investment
                 Companies, a group of 32 investment companies with 78
                 distinct investment portfolios and total assets in excess of
                 $120 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 21
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INVESTMENT ADVISER
                 The Trust receives investment advisory services on an at-cost
                 basis from Vanguard's Core Management Group. As a result, the
                 Trust receives its investment advisory services at a
<PAGE>
                 substantially lower cost than would be possible if the Trust
                 paid an investment advisory fee to an external investment
                 adviser.                                              Page 22
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FEES AND EXPENSES
                 A portfolio transaction fee of 1% is deducted from purchases
                 of the Extended Market and Small Capitalization Stock
                 Portfolios; a 0.25% portfolio transaction fee is deducted
                 from purchases of the Total Stock Market Portfolio. Portfolio
                 transaction fees are paid to the Portfolios to offset
                 transaction costs of buying securities of small- and medium-
                 sized companies. Shareholders in each Portfolio will also
                 incur a $10 annual account maintenance fee deducted from the
                 Portfolio's dividend.                                  Page 4
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DIVIDEND POLICY
                 The Trust distributes substantially all of its net investment
                 income in the form of dividends. The 500, Total Stock Market,
                 Value and Growth Portfolios distribute dividends quarterly,
                 whereas the Extended Market and Small Capitalization Stock
                 Portfolios distribute dividends annually. In all six
                 Portfolios, net capital gains, if any, are distributed
                 annually.                                             Page 24
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TAXES
                 A sale of shares of a Portfolio is a taxable event and may
                 result in a capital gain or loss. Dividend distributions,
                 capital gain distributions, and capital gains or losses from
                 redemptions and exchanges may be subject to federal, state
                 and local taxes.                                      Page 24
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PURCHASING SHARES
                 You may purchase shares by mail, wire or written exchange
                 from another Vanguard Fund. The minimum initial investment is
                 $3,000 per Portfolio ($500 for Individual Retirement Accounts
                 and Uniform Gifts/Transfers to Minors Act accounts); the
                 minimum for subsequent investments is $100. There are no
                 sales commissions or 12b-1 fees. Telephone exchanges from
                 other Vanguard Funds are not permitted.               Page 27
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SELLING SHARES
                 You may redeem shares of each Portfolio in writing or by
                 telephone; however, telephone exchanges into other Vanguard
                 Funds are not permitted (except for certain retirement
                 accounts). The share price of each Portfolio is expected to
                 fluctuate, and may at redemption be more or less than at the
                 time of initial purchase, resulting in a gain or loss.Page 31
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OTHER VANGUARD SERVICES
                 The Trust offers two special services: Fund Express, for
                 electronic transfers between the Fund and your bank account;
                 and Tele-Account, for round-the-clock telephone access to
                 your Fund account.                                    Page 34
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SPECIAL CONSIDERATIONS
                    (1) Each Portfolio may invest a portion of its assets in
                 futures contracts, options, convertible securities & swap
                 agreements.                                           Page 19
 
                 (2) Each Portfolio may invest in short-term fixed income
                 securities.                                           Page 19
 
                 (3) Each Portfolio may lend its securities.           Page 20
 
                 (4) Each Portfolio may borrow money.                  Page 21
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<PAGE>

TRUST EXPENSES
                 The following table illustrates ALL expenses and fees that
                 you would incur as a shareholder of the Trust. The expenses
                 and fees for the 500, Extended Market, Total Stock Market,
                 Value and Growth Portfolios are based on the year ended
                 December 31, 1993. The fees and expenses for the Small
                 Capitalization Stock Portfolio are based on the year ended
                 September 30, 1993.
<TABLE>
<CAPTION>
                                                    TOTAL                                       SMALL
SHAREHOLDER                         EXTENDED        STOCK                              CAPITALIZATION
TRANSACTION                 500       MARKET       MARKET         VALUE      GROWTH             STOCK
EXPENSES              PORTFOLIO    PORTFOLIO    PORTFOLIO     PORTFOLIO   PORTFOLIO      PORTFOLIO***
- -------------------------------------------------------------------------------------------------------
<S>                <C>          <C>           <C>           <C>         <C>         <C>
Sales Load Imposed
  on Purchases.....        None         None*        None**        None        None              None*
Sales Load Imposed
  on Reinvested
  Dividends........        None         None         None          None        None              None
Redemption Fees....        None         None         None          None        None              None
Exchange Fees......        None         None         None          None        None              None
 
<FN>
  *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>
<TABLE>
<CAPTION>
                                                     TOTAL                                     SMALL
ANNUAL FUND                           EXTENDED       STOCK                            CAPITALIZATION
OPERATING                     500       MARKET      MARKET       VALUE      GROWTH             STOCK
EXPENSES                PORTFOLIO    PORTFOLIO   PORTFOLIO   PORTFOLIO   PORTFOLIO      PORTFOLIO***
- -----------------------------------------------------------------------------------------------------
<S>                   <C>         <C>          <C>         <C>         <C>         <C>
Management &
  Administrative
  Expenses++..........      0.15%        0.15%       0.15%       0.14%       0.13%             0.13%
Investment Advisory
  Fees................     None         None        None        None        None              None
12b-1 Fees............     None         None        None        None        None              None
Other Expenses
  Distribution Costs..      0.03         0.02        0.03        0.02        0.02              0.02
  Miscellaneous
    Expenses..........      0.01         0.03        0.02        0.04        0.05              0.03
                            ----         ----        ----        ----        ----              ----
Total Other Expenses..      0.04         0.05        0.05        0.06        0.07              0.05
                            ----         ----        ----        ----        ----              ----
    TOTAL OPERATING
      EXPENSES........      0.19%        0.20%       0.20%       0.20%       0.20%             0.18%
                            ====         ====        ====        ====        ====              ====
 
<FN>
***Formerly Vanguard Small Capitalization Stock Fund, Inc.
 ++In addition to these costs, each Portfolio assesses an annual account maintenance fee of $10.
 
</TABLE>
 
                 The purpose of this table is to assist you in understanding
                 the various costs and expenses that you would bear directly
                 or indirectly as an investor in the Trust.

THREE PORTFOLIOS ASSESS TRANSACTION FEES
                 The Extended Market and Small Capitalization Stock Portfolios
                 assess a portfolio transaction fee on purchases of Portfolio
                 shares equal to 1% of the dollar amount invested; the Total
                 Stock Market Portfolio assesses a portfolio transaction fee
                 equal to 0.25% of the dollar amount invested. The portfolio
                 transaction fees are paid to the respective Portfolio, not to
                 Vanguard. They are not sales charges.
 
<PAGE>
                 These fees apply to initial investments in the Extended
                 Market, Small Capitalization Stock and Total Stock Market
                 Portfolios and all subsequent purchases (including purchases
                 made by exchange from another Vanguard Fund or from the other
                 Portfolios of the Trust), 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.)

                 The 1% and 0.25% fees represent Vanguard's estimate of the
                 brokerage and other transaction costs incurred by the
                 Extended Market, Small Capitalization Stock and Total Stock
                 Market Portfolios in acquiring stocks of mid- and small-
                 capitalization companies. Without the fees, the three
                 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.

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, and $10 annually for accounts in
                 the Extended Market and Small Capitalization Stock
                 Portfolios. 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 of the Trust, 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,
                 assuming (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; and the 0.25% transaction
                 fee for the Total Stock Market Portfolio. As noted in the
                 table on the previous page, the Trust charges no redemption
                 fees of any kind.
<PAGE>
<TABLE>
<CAPTION>
                                                                      1 YEAR           3 YEARS          5 YEARS         10 YEARS
                                                                      ------           -------          -------         --------
                                <S>                                     <C>              <C>              <C>             <C>
                                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
 
</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.
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FINANCIAL HIGHLIGHTS
                 The following financial highlights for a share outstanding
                 throughout each period, insofar as they relate to each of the
                 five years ended December 31, 1993, (September 30, 1993 with
                 respect to the Small Capitalization Stock Portfolio) have
                 been audited by Price Waterhouse, independent accountants,
                 whose reports thereon were unqualified. This financial
                 information should be read in conjunction with the Trust's
                 financial statements and notes thereto, which are
                 incorporated by reference in the Statement of Additional
                 Information and in this Prospectus, and which appear, along
                 with the reports of Price Waterhouse, in the Trust'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,
                 in the Small Capitalization Stock Fund's 1993 Annual Report
                 to Shareholders. For a more complete discussion of the
                 Trust's performance, please see the Trust's 1993 Annual
                 Report to Shareholders, which may be obtained free of charge
                 by writing to the Trust or calling our Investor Information
                 Department at 1-800-662-7447.
 
 
<PAGE>
<TABLE>
<CAPTION>
                                           --------------------------------------------------------------------------------------
                                                                               500 PORTFOLIO
                                           --------------------------------------------------------------------------------------
                                                                          YEAR ENDED DECEMBER 31,
                                           --------------------------------------------------------------------------------------
                                              1993     1992     1991     1990    1989    1988    1987    1986    1985      1984
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                         <C>      <C>      <C>      <C>     <C>     <C>     <C>     <C>     <C>       <C>
NET ASSET VALUE, BEGINNING OF YEAR.......   $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...................     1.13     1.12     1.15     1.17    1.20    1.08     .88     .89     .91       .88
 Net Realized and Unrealized Gain
  (Loss) on Investments..................     2.89     1.75     8.20    (2.30)   7.21    2.87     .36    3.30    5.08       .30
                                            ------   ------   ------   ------  ------  ------  ------  ------  ------    ------
   TOTAL FROM INVESTMENT OPERATIONS......     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....    (1.13)   (1.12)   (1.15)   (1.17)  (1.20)  (1.10)   (.69)   (.89)   (.91)     (.88)
 Distributions from Realized Capital
  Gains..................................     (.03)    (.10)    (.12)    (.10)   (.75)   (.32)   (.17)  (2.02)  (1.61)     (.48)
                                            ------   ------   ------   ------  ------  ------  ------  ------  ------    ------
   TOTAL DISTRIBUTIONS...................    (1.16)   (1.22)   (1.27)   (1.27)  (1.95)  (1.42)   (.86)  (2.91)  (2.52)    (1.36)
- ---------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR.............   $43.83   $40.97   $39.32   $31.24  $33.64  $27.18  $24.65  $24.27  $22.99    $19.52
=================================================================================================================================
TOTAL RETURN*............................     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 Year (Millions).......   $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%     .20%     .22%    .21%    .22%    .26%    .28%    .28%      .27%
Ratio of Net Investment Income to Average
 Net Assets..............................     2.65%    2.81%    3.07%    3.60%   3.62%   4.08%   3.15%   3.40%   4.09%     4.53%
Portfolio Turnover Rate..................        6%+      4%+      5%+     23%+     8%     10%     15%     29%     36%       14%
 
<FN>
*Total return figures do not reflect the annual account maintenance fee of $10 or applicable portfolio transaction fees.
+Portfolio turn over rates excluding in-kind redemptions were 2%, 1%, 1% and 6%, respectively.
</TABLE>
<TABLE>
<CAPTION>
                                                            ----------------------------------------------------------------------
                                                                                      EXTENDED MARKET PORTFOLIO
                                                            ----------------------------------------------------------------------
                                                                               YEAR ENDED DECEMBER 31,
                                                            ----------------------------------------------------------------------
                                                                                                                         DEC. 21+
                                                               1993      1992      1991      1990      1989      1988  TO 31, 1987
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                                          <C>       <C>       <C>       <C>       <C>       <C>        <C>
NET ASSET VALUE, BEGINNING OF PERIOD........................ $17.35    $15.82    $11.48    $13.92    $11.60    $ 9.99     $10.00
                                                             ------    ------    ------    ------    ------    ------     ------
INVESTMENT OPERATIONS
  Net Investment Income.....................................    .23       .24       .25       .30       .26       .34        .03
  Net Realized and Unrealized Gain (Loss) on Investments....   2.28      1.72      4.54     (2.25)     2.52      1.63       (.04)
                                                             ------    ------    ------    ------    ------    ------     ------ 
   TOTAL FROM INVESTMENT OPERATIONS.........................   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 Gain..................   (.20)     (.18)     (.20)     (.16)     (.23)     (.16)        --
                                                             ------    ------    ------    ------    ------     ------    ------
   TOTAL DISTRIBUTIONS......................................   (.43)     (.43)     (.45)     (.49)     (.46)     (.36)        --
- ----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD.............................. $19.43     $17.35   $15.82    $11.48    $13.92    $11.60     $ 9.99
==================================================================================================================================
TOTAL RETURN*...............................................  14.49%     12.47%   41.85%   (14.05)%   24.10%    19.75%    (0.10)%
==================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period (Millions)........................   $928       $585     $372      $179      $147       $35        $5
Ratio of Expenses to Average Net Assets.....................    .20%       .20%     .19%      .23%      .23%      .24%        0% 
Ratio of Net Investment Income to Average Net Assets........   1.48%      1.73%    2.14%     2.68%     2.92%     2.90%        0%
Portfolio Turnover Rate.....................................     13%         9%      11%        9%       14%       26%        3%
 
<FN>
*Total return figures do not reflect the annual account maintenance fee of $10 or applicable portfolio transaction fees.
+Commencement of Operations.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                            ---------------------------------   --------------------------------   -------------------------------
                                       TOTAL STOCK                 
                                    MARKET PORTFOLIO                    GROWTH PORTFOLIO                   VALUE PORTFOLIO
                            ---------------------------------   --------------------------------   -------------------------------
                                YEAR ENDED   MARCH 16+, 1992,       YEAR ENDED     NOV, 2, 1992,      YEAR ENDED     NOV. 2, 1992,
                             DEC. 31, 1993   TO DEC. 31, 1992    DEC. 31, 1993  TO DEC. 31, 1992   DEC. 31, 1993  TO DEC. 31, 1992
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>                <C>              <C>               <C>             <C>              <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD........        $10.84             $10.00           $10.26            $10.00          $10.30           $10.00
                                    ------             ------           ------            ------          ------           ------
INVESTMENT OPERATIONS
 Net Investment Income......           .26                .23              .21               .06             .38              .07
 Net Realized and Unrealized     	
  Gain (Loss) on Investments           .88                .84             (.06)              .26            1.50              .30 
                                    ------             ------           ------            ------          ------           ------
   TOTAL FROM INVESTMENT
     OPERATIONS.............          1.14               1.07              .15               .32            1.88              .37
- ----------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment
  Income....................          (.26)              (.23)            (.21)             (.06)           (.38)            (.07)
 Distributions from Realized
  Capital Gains.............          (.03)                --               --                --            (.06)              --
                                    ------             ------           ------             ------         ------           ------
   TOTAL DISTRIBUTIONS......          (.29)              (.23)            (.21)             (.06)           (.44)            (.07)
- ----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF
 PERIOD.....................        $11.69             $10.84           $10.20            $10.26          $11.47           $10.30
==================================================================================================================================
TOTAL RETURN**..............         10.62%             10.41%            1.53%             3.19%          18.35%            3.70%
==================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period
 (Millions).................          $512               $275              $51               $21            $190              $24
Ratio of Expenses to Average
Net  Assets.................           .20%               .21%*            .20%                0%*            20%               0%
Ratio of Net Investment
Income to  Average Net
Assets......................          2.31%              2.42%*           2.10%             2.85%*          3.26%            3.46%
Portfolio Turnover Rate.....             1%                 3%              36%                2%             30%               4%
 
<FN>
 *Annualized.
**Total return figures do not reflect the annual account maintenance fee of $10 or applicable portfolio transaction fees.
+Commencement of operations.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                   ------------------------------------------------------------------------------------------------
                                                                SMALL CAPITALIZATION STOCK PORTFOLIO*
                                   ------------------------------------------------------------------------------------------------
                                                                       YEAR ENDED SEPTEMBER 30,
                                   ------------------------------------------------------------------------------------------------
                                      1993     1992     1991     1990(1)  1989+   1988    1987    1986    1985     1984      1983
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>      <C>      <C>      <C>      <C>     <C>     <C>     <C>     <C>      <C>       <C>
NET ASSET VALUE, BEGINNING OF YEAR. $12.63   $12.03   $ 8.55   $11.88   $11.96  $15.73  $13.24  $11.68  $13.15   $19.77    $12.50
                                    ------   ------   ------   ------   ------  ------  ------  ------  ------   ------    ------
INVESTMENT OPERATIONS
 Net Investment Income (Loss)......    .20      .19      .20      .17      .10     .03    (.04)   (.01)   (.04)     .14      (.08)
 Net Realized and Unrealized Gain
  (Loss) on Investments............   3.73      .88     3.60    (3.46)    2.13   (2.59)   4.42    1.57    (.51)   (4.25)     8.57
                                    ------   ------   ------   ------   ------  ------  ------  ------  ------   ------    ------
  TOTAL FROM INVESTMENT OPERATIONS.   3.93     1.07     3.80    (3.29)    2.23   (2.56)   4.38    1.56    (.55)   (4.11)     8.49
- -----------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment
  Income...........................   (.18)    (.18)    (.18)    (.04)    (.14)     --      --      --    (.15)      --      (.30)
 Distributions from Realized
  Capital Gains....................   (.15)    (.29)    (.14)      --    (2.17)  (1.21)  (1.89)     --    (.77)   (2.51)     (.92)
                                    ------   ------   ------   ------   ------  ------  ------  ------  ------   ------    ------
  TOTAL DISTRIBUTIONS..............   (.33)    (.47)    (.32)    (.04)   (2.31)  (1.21)  (1.89)     --    (.92)   (2.51)    (1.22)
- -----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR....... $16.23   $12.63   $12.03   $ 8.55   $11.88  $11.96  $15.73  $13.24  $11.68   $13.15    $19.77
===================================================================================================================================
TOTAL RETURN++.....................  31.60%    9.34%   45.91%  (27.73)%  18.83% (14.30)% 38.02%  13.33%  (3.67)% (22.89)%   70.44%
===================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Year (Millions).   $432     $202     $111      $40      $20     $27     $35     $31     $32      $37       N/A
Ratio of Expenses to Average Net
  Assets...........................    .18%     .18%     .21%     .31%    1.00%    .95%    .92%    .92%   1.00%    1.05%     1.41%
Ratio of Net Investment Income
 (Loss) to Average Net Assets......   1.47%    1.65%    2.11%    1.91%     .65%    .24%   (.25%)  (.06%)  (.28%)   1.11%     (.54%)
Portfolio Turnover Rate............     26%      26%      33%      40%     160%     68%     92%     92%    103%     100%       83%
 
<FN>
(1) Adjusted to reflect a 3-for-1 stock split as of February 3, 1990.
*Formerly Vanguard Small Capitalization Stock Fund, Inc. (the "Fund").
 +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.
</TABLE>
- ------------------------------------------------------------------------------
YIELD AND TOTAL RETURN
                 From time-to-time a Portfolio of the Trust 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.
 
                 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.
 
<PAGE>
                 Additionally, the Portfolios may compare their performance to
                 that of their comparative indexes. The target benchmarks
                 include the Standard & Poor's 500 Composite Stock Price
                 Index, the Wilshire 4500 Index, the Wilshire 5000 Index, the
                 Russell 2000 Small Stock Index, the S&P/BARRA Value Index and
                 the S&P/BARRA Growth Index.
- ------------------------------------------------------------------------------
INVESTMENT OBJECTIVES
EACH PORTFOLIO SEEKS TO MATCH THE INVESTMENT PERFORMANCE OF ITS RESPECTIVE
INDEX
                 The Trust is an open-end diversified investment company
                 designed as an "index" fund. The Trust consists of six
                 Portfolios, each of which 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 pie chart below illustrates how, as measured by market
                 capitalization, the Standard & Poor's 500 Index, the Wilshire
                 4500 Index and the Russell 2000 Index cover the entire U.S.
                 equity market, as represented by the Wilshire 5000 Index:
 
                         GRAPHIC PIE CHART HERE ON PRINTED PROSPECTUS 
 
                 * 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.
 
<PAGE>
                 * The TOTAL STOCK MARKET PORTFOLIO seeks to replicate the
                   aggregate price and yield performance of the Wilshire 5000
                   Index, an index 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 pie chart below illustrates how, as measured by market
                 capitalization, the S&P 500 Index is divided into the S&P/
                 BARRA Value and S&P/BARRA Growth Indexes.
 
                         GRAPHIC PIE CHART HERE ON PRINTED PROSPECTUS 

                 * 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.
 
                 These investment objectives are fundamental and so cannot be
                 changed without the approval of a majority of a Portfolio's
                 shareholders.
- ------------------------------------------------------------------------------
<PAGE>
INVESTMENT POLICIES
ALL SIX PORTFOLIOS USE A "PASSIVE" APPROACH TO INVEST IN COMMON STOCKS
                 The six Portfolios of the Trust are not managed according to
                 traditional 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 Portfolios, utilizing a "passive" or
                 "indexing" investment approach, attempt to duplicate the
                 investment performance of their respective indexes through
                 statistical procedures. The Portfolios are managed without
                 regard to tax ramifications.
 
                 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 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
<PAGE>
                 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.
 
                 These investment policies are not fundamental and so may be
                 changed by the Board of Trustees without shareholder
                 approval.
- ------------------------------------------------------------------------------
INVESTMENT RISKS
EACH PORTFOLIO IS SUBJECT TO MARKET RISK
                 As mutual funds investing primarily in common stocks, the
                 Portfolios of the Trust are subject to market risk--i.e., the
                 possibility that common stock prices will decline over
                 short or even extended periods. The U.S. stock market tends
                 to be cyclical, with periods when stock prices generally rise
                 and periods when prices generally decline.
 
                 To illustrate the volatility of stock prices, the following
                 table sets forth the extremes for stock market returns as
                 well as the average return for the period from 1926 to 1993,
                 as measured by the S&P 500 Composite Stock Price Index:
<TABLE>
                                       U.S. STOCK MARKET RETURNS (1926-1993)
                                             OVER VARIOUS TIME HORIZONS
<CAPTION>
                                       1 YEAR             5 YEARS           10 YEARS           20 YEARS
                                       ------             -------           --------           --------
                   <S>                  <C>                <C>                <C>                <C>
                   Best                 +53.9%             +23.9%             +20.1%             +16.9%
                   Worst                -43.3              -12.5              - 0.9              + 3.1
                   Average              +12.3              +10.3              +10.6              +10.6
</TABLE>
 
                 As shown, 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%. While this average return can be used as a guide for
                 setting reasonable expectations for future stock market
                 returns, it may not be useful for forecasting future returns
                 in any particular period, as stock returns are quite volatile
                 from year-to-year.

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
<PAGE>
                 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.
- ------------------------------------------------------------------------------
WHO SHOULD INVEST
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 a low-cost, "passive"
                 approach for investing in a diversified portfolio of common
                 stocks. Unlike other equity mutual funds, which generally
                 seek to "beat" stock market averages with unpredictable
                 results, all six Portfolios seek to "match" their respective
                 indexes and thus are expected to provide a highly predictable
                 return relative to their benchmarks.
 
                 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.
 
<PAGE>
                 * 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 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.
 
                 The share price of each Portfolio is expected to be volatile,
                 and investors should be able to tolerate sudden, sometimes 
                 substantial fluctuations in the value of their investment. 
                 No assurance can be given that the Portfolios will achieve 
                 their stated objectives or that shareholders will be protected
                 from the risks inherent in equity investing. Investors may 
                 wish to purchase shares on a regular, periodic basis (dollar-
                 cost averaging) rather than investing in one lump sum in order
                 to reduce the risk of investing all their monies in common 
                 stocks at a particularly unfavorable time.
 
                    The Trust is intended to be a long-term investment vehicle
                 and is not designed to provide investors with a means of
                 speculating on short-term market movements. Investors who
                 engage in excessive account activity generate additional
                 costs which are borne by all of the Trust's shareholders. In
                 order to minimize such costs the Trust has adopted the
                 following policies. The Trust reserves the right to reject
                 any purchase request (including exchange purchases from other
                 Vanguard portfolios) that is reasonably deemed to be
                 disruptive to efficient portfolio management, either because
                 of the timing of the investment or previous excessive trading
                 by the investor. Additionally, the Trust has adopted exchange
                 privilege limitations as described in the section "Exchange
                 Privilege Limitations." Finally, the Trust reserves the right
                 to suspend the offering of its shares.    
 
                    Investors should not consider the Trust a complete
                 investment program, but should maintain holdings of
                 securities with different risk characteristics--including
                 common stocks, bonds and money market instruments. Investors
                 may also wish to complement an investment in the Trust with
                 other types of common stock investments.    
- ------------------------------------------------------------------------------
<PAGE>
IMPLEMENTATION OF POLICIES
                 Each Portfolio of the Trust utilizes a number of investment
                 practices in an effort to match the investment performance of
                 its respective index.

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.
 
                 The following table illustrates the changing proportions that
                 the S&P 500 Index and the Wilshire 4500 Index have
                 represented in the Wilshire 5000 Index since 1984.
<PAGE>
<TABLE>
<CAPTION>
                 WILSHIRE 5000 INDEX                1984    1985    1986    1987    1988    1989    1990    1991    1992    1993
                 -------------------                ----    ----    ----    ----    ----    ----    ----    ----    ----    ----
                 <S>                                <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
                 S&P 500........................    69%     69%     70%     71%     71%     73%     72%     75%     71%     67%
                 Wilshire 4500..................    31%     31%     30%     29%     29%     27%     28%     25%     29%     33%
                                                    ----    ----    ----    ----    ----    ----    ----    ----    ----    ----
                                                    100%    100%    100%    100%    100%    100%    100%    100%    100%    100%
</TABLE>
 
                 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 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 Portfolio will be selected utilizing a
                 statistical sampling technique known as "optimization." This
                 process selects stocks for the Portfolio so that various
                 industry weightings, market capitalizations and fundamental
                 characteristics (e.g. price-to-book, price-to-earnings, debt-
                 to-asset ratios, and dividend yields) closely approximate
                 those of the appropriate Index. For instance, if 10% of the 
                 capitalization of the Wilshire 4500 Index consists of utility
                 companies with relatively large stock capitalizations, then 
                 the Extended Market Portfolio is constructed so that 
                 approximately 10% of the Portfolio's assets are invested in 
                 the stocks of utility companies with relatively large 
                 capitalizations. The Total Stock Market and Small 
                 Capitalization Stock Portfolios are constructed using the 
                 same sampling technique.
 
                 This sampling technique 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
<PAGE>
                 Portfolios and their respectives 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.

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.
 
<PAGE>
                 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 Indexes, which are determined, composed and calculated
                 by S&P without regard to the 500, Value and Growth
                 Portfolios.

EACH PORTFOLIO MAY INVEST IN SHORT-TERM FIXED INCOME SECURITIES
                 Although all six Portfolios normally seek to remain
                 substantially fully invested in common stocks, the Portfolios
                 of the Trust may invest temporarily in certain short-term
                 fixed income securities. 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.

EACH PORTFOLIO MAY USE FUTURES CONTRACTS, OPTIONS AND WARRANTS, CONVERTIBLE
SECURITIES AND SWAP AGREEMENTS
                 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). Futures contracts,
                 options, warrants, convertible securites 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 its 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. However, the
                 Portfolios will not use futures contracts, options, warrants,
                 convertible securities and swap agreements for speculative
                 purposes or to leverage their net assets. Accordingly, the
                 primary risks associated with the use of futures contracts,
                 options, warrants, convertible securities and swap agreements
                 by the Portfolios are: (i) imperfect correlation between the
                 change in market value of the stocks held by a Portfolio and
                 the prices of futures contracts, options, warrants,
                 convertible securities and swap agreements; and (ii) possible
<PAGE>
                 lack of a liquid secondary market for a futures contract and
                 the resulting inability to close a futures position prior to
                 its maturity date. The risk of imperfect correlation will be
                 minimized by investing only in those contracts whose
                 behavior is expected to resemble that of a Portfolio's
                 underlying securities. The risk that a Portfolio will be
                 unable to close out a futures position will be minimized by
                 entering into such transactions on an exchange with an active
                 and liquid secondary market. However options, warrants,
                 convertible securities and swap agreements purchased or sold
                 over-the-counter may be less liquid than exchange traded
                 securities. Illiquid securities, in general, may not
                 represent more than 15% of the net assets of a Portfolio of
                 the Trust.
 
                 Since there are no futures traded on the S&P/BARRA Value or
                 Growth Indexes, it will be necessary for the Value and Growth
                 Portfolios to utilize a composite of other futures contracts
                 to simulate the performance of each of these Indexes. This
                 process may magnify the "tracking error" of each Portfolio's
                 performance compared to that of the Indexes, due to lower
                 correlation of the selected futures with the Indexes. 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 the indexes.
 
                 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.

EACH PORTFOLIO MAY LEND ITS SECURITIES
                 Each Portfolio of the Trust may lend its investment
                 securities to qualified institutional investors for either
                 short-term or long-term purposes of realizing additional
                 income. Loans of securities by a Portfolio will be
                 collateralized by cash, letters of credit, or securities
                 issued or guaranteed by the U.S. Government or its agencies.
                 The collateral will equal at least 100% of the current market
                 value of the loaned securities, and such loans may not exceed
                 33-1/3% of the value of the Portfolio's net assets.

PORTFOLIO TURNOVER IS EXPECTED TO BE LOW
                 Although each Portfolio generally seeks to invest for the
                 long term, the six Portfolios of the Trust retain the right
                 to sell securities irrespective of how long they have been
                 held. However, because of the "passive" investment management
                 approach of the Trust, the portfolio turnover rate for each
                 Portfolio is expected to be under 50%, a generally lower
                 turnover rate than for most other investment companies. A
                 portfolio turnover rate of 50% would occur if one half of a
                 Portfolio's securities were sold within one year. Ordinarily,
                 securities will be sold from a Portfolio only to reflect
                 certain administrative changes in an index (including mergers
                 or changes in the composition of an index) or to accommodate
                 cash flows into and out of each Portfolio while maintaining
                 the similarity of a Portfolio to its benchmark index.
- ------------------------------------------------------------------------------
<PAGE>
INVESTMENT LIMITATIONS
THE TRUST HAS ADOPTED CERTAIN FUNDAMENTAL LIMITATIONS
                 The Trust has adopted certain limitations on its investment
                 practices. Specifically, each Portfolio of the Trust 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 Portfolio's assets would be invested in
                     the securities of such issuer;
                 (b) with respect to 75% of its assets, purchase more than 10%
                     of the voting securities of any issuer;
                 (c) invest more than 25% of its assets in any one industry;
                     and
                 (d) borrow money, except that a Portfolio 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 value of the
                     Portfolio's net assets (including the amount borrowed and
                     the value of any outstanding reverse repurchase
                     agreements) at the time the borrowing is made. Whenever
                     borrowings exceed 5% of the value of a Portfolio's net
                     assets, the Portfolio will not make any additional
                     investments.
 
                 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 only with the approval of a majority of a
                 Portfolio's shareholders.
- ------------------------------------------------------------------------------
MANAGEMENT OF THE TRUST
VANGUARD ADMINISTERS AND DISTRIBUTES THE TRUST
                 The Trust is a member of The Vanguard Group of Investment
                 Companies, a family of 32 investment companies with 78
                 distinct portfolios and total assets in excess of $120
                 billion. 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
                 management, administrative 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).
 
                 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. 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 can be found in the
                 Statement of Additional Information.
 
                 Vanguard employs a supporting staff of management and
                 administrative personnel needed to provide the requisite
                 services to the funds and 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
<PAGE>
                 of Trustees (Directors) of each fund. In addition, each fund
                 bears its own direct expenses, such as legal, auditing and
                 custodian fees.
 
                 Vanguard provides distribution and marketing services to the
                 funds. The funds are available on a no-load basis (i.e.,
                 there are no sales commissions or 12b-1 fees). However, each
                 fund bears its share of the Group's distribution costs.
- ------------------------------------------------------------------------------
INVESTMENT ADVISER
VANGUARD MANAGES THE TRUST ON AN AT-COST BASIS
                 The six Portfolios of the Trust receive all investment
                 advisory services on an at-cost basis from Vanguard's Core
                 Management Group. The Core Management Group also provides
                 investment advisory services to several other Vanguard Funds,
                 including Vanguard International Equity Index Fund, Vanguard
                 Institutional Index Fund, Vanguard Balanced Index Fund,
                 Vanguard Variable Insurance Fund--Equity Index Portfolio, and
                 a portion of Vanguard/Windsor II, as well as to several
                 indexed separate accounts. Total assets under management by
                 the Core Management Group were $16.4 billion as of December
                 31, 1993. The Trust is not actively managed, but is instead
                 administered by the Core Management Group using computerized,
                 quantitative techniques. The Core Management Group is
                 supervised by the Officers of the Trust.
 
                 In placing portfolio transactions, the 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 Trust.
- ------------------------------------------------------------------------------
PERFORMANCE RECORD
                 The table in this section provide investment results for the
                 500, Extended Market and Small Capitalization Stock
                 Portfolios of the Trust for several periods throughout the
                 Trust's lifetime. The results shown represent "total return"
                 investment performance, which assumes the reinvestment of all
                 capital gains and income dividends for the indicated periods.
                 Also included is comparative information with respect to the
                 unmanaged S&P 500 Composite Stock Price Index, the Wilshire
                 4500 Index and the Russell 2000 Index. The results for the
                 Portfolios are net of all expenses while the results of the
                 stock indexes are hypothetical and make no allowances for the
                 costs of investing. The tables do not make any allowance for
                 federal, state or local income taxes, which shareholders must
                 pay on a current basis. The Total Stock Market, Value, and
                 Growth Portfolios were introduced in 1992, and so long-term
                 investment results are not yet available.
 
                 The results shown should not be considered a representation
                 of the total return from an investment made in the Trust
                 today. The periods shown were generally favorable ones for
                 stock market investing. This information is provided to help
                 investors better understand the Trust and may not provide a
                 basis for comparison with other investments or mutual funds
                 which use a different method to calculate performance.
<PAGE>
<TABLE>
<CAPTION>
                                                                                    AVERAGE ANNUAL TOTAL RETURN FOR
                                                                                  VANGUARD INDEX TRUST--500 PORTFOLIO
                                                                             ----------------------------------------------
                                                  FISCAL PERIODS                      500                     S&P 500
                                                  ENDED 12/31/93                   PORTFOLIO*                  INDEX
                                         --------------------------------            ------             -------------------
                                         <S>                                 <C>                        <C>
                                         1 Year                                      + 9.8%                   +10.1%
                                         5 Years                                     +14.3                    +14.5
                                         10 Years                                    +14.6                    +14.9
                                         Lifetime**                                  +13.2                    +13.7
<FN>
                                          *Inclusive of $10 annual account maintenance fee.
                                         **August 31, 1976 to December 31, 1993.
 
</TABLE>
<TABLE>
<CAPTION>
                                                                                    AVERAGE ANNUAL TOTAL RETURN FOR
                                                                                         VANGUARD INDEX TRUST--
                                                                                       EXTENDED MARKET PORTFOLIO
                                                                             ----------------------------------------------
                                                                                    EXTENDED                 WILSHIRE
                                                  FISCAL PERIODS                     MARKET                    4500
                                                  ENDED 12/31/93                   PORTFOLIO*                  INDEX
                                         --------------------------------    ----------------------     -------------------
                                         <S>                                 <C>                        <C>
                                         1 Year                                      +13.3%                   +14.6%
                                         5 Years                                     +14.3                    +14.5
                                         Lifetime**                                  +14.8                    +15.5
<FN>
                                          *Includes 1% portfolio transaction fee and $10 annual account maintenance fee.
                                         **December 21, 1987 to December 31, 1993.
</TABLE>
<TABLE>
<CAPTION>
                                                                                    AVERAGE ANNUAL TOTAL RETURN FOR
                                                                                         VANGUARD INDEX TRUST--
                                                                                 SMALL CAPITALIZATION STOCK PORTFOLIO+
                                                                             ----------------------------------------------
                                                                                     SMALL                    RUSSELL
                                                  FISCAL PERIODS                 CAPITALIZATION                2000
                                                  ENDED 9/30/93                 STOCK PORTFOLIO*               INDEX
                                         --------------------------------    ----------------------     -------------------
                                         <S>                                 <C>                        <C>
                                         1 Year                                      +30.2%                   +33.2%
                                         3 Years                                     +27.5                    +28.1
                                         Since September 11, 1989                    +10.2                      N/A
<FN>
                                         *Includes 1% portfolio transaction fee and $10 annual account maintenance fee.
                                         +Formerly Vanguard Small Capitalization Stock Fund, Inc.
</TABLE>
- ------------------------------------------------------------------------------
<PAGE>
DIVIDENDS, CAPITAL GAINS AND TAXES
FOUR PORTFOLIOS PAY QUARTERLY DIVIDENDS; TWO PAY DIVIDENDS ONCE A YEAR
                 The Trust distributes substantially all of 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.
 
                 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.
 
                 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 Trust and
                 received by shareholders on December 31 of the prior year.

EACH PORTFOLIO CHARGES A $10 ANNUAL ACCOUNT MAINTENANCE FEE
                 The Trust automatically deducts a $10 annual account
                 maintenance fee from the dividend income paid to each
                 Portfolio account. For the 500, Total Stock Market, Value and
                 Growth Portfolios the $10 account maintenance fee is deducted
                 at a rate of $2.50 per quarter from the dividend; while for
                 the Extended Market and Small Capitalization Stock Portfolios
                 the $10 fee is deducted once a year from the dividend. If the
                 dividend to be paid to an account is less than the fee to be
                 deducted, sufficient shares will be redeemed from an account
                 to make up the difference. The Board of Trustees reserves the
                 right to change the annual account maintenance fee to reflect
                 the actual cost of maintaining shareholder accounts.
 
                 Each Portfolio of the Trust 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-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
<PAGE>
                 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 Trust will notify you annually as to the tax status of
                 dividend and capital gains distributions paid by each
                 Portfolio.
 
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 Trust 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
                 Identification Number and by certifying that you are not
                 subject to backup withholding.
 
                 The 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 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 Trust.
- ------------------------------------------------------------------------------
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 by the Portfolio. 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, 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, 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
<PAGE>
                 approximates market value. Securities for which no current
                 quotations are readily available are valued at fair market
                 value as determined in good faith by the 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 Portfolio's share price can be found daily in the mutual
                 fund listings of most major newspapers under the heading of
                 The Vanguard Group.
- ------------------------------------------------------------------------------
GENERAL INFORMATION
                 The 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 are fully paid and non-assessable;
                 have no preference as to conversion, exchange, dividends,
                 retirement or other features; and have no pre-emptive rights.
                 Such shares have non-cumulative voting rights, meaning that
                 the holders of more than 50% of the shares voting for the
                 election of Trustees can elect 100% of the 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 Trustee or Trustees of the Trust if requested in
                 writing by the holders of not less than 10% of the
                 outstanding shares of the Trust.
 
                 All securities and cash for the 500, Extended Market, Total
                 Stock Market and Small Capitalization Stock Portfolios are
                 held by State Street Bank and Trust Company, Boston, MA. All
                 securities and cash for the Value and Growth Portfolios are
                 held by CoreStates National Bank, Philadelphia, PA. The
                 Vanguard Group, Inc., Valley Forge, PA, serves as the Trust's
                 Transfer and Dividend Disbursing Agent. Price Waterhouse
                 serves as independent accountants for the Trust and will
                 audit its financial statements annually. The Trust is not
                 involved in any litigation.
- ------------------------------------------------------------------------------
<PAGE>
                              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 or appropriate Adoption Agreement (e.g.,
                 the IRA Adoption Agreement) and any required legal
                 documentation, indicating the amount you wish to invest. Your
                 purchase must be equal to or greater than the $3,000 minimum
                 initial investment requirement for each Portfolio ($500 for
                 retirement accounts or Uniform Gifts/Transfers to Minors Act
                 accounts). You must open a new Individual Retirement Account
                 by mail (IRAs may not be opened by wire) using a Vanguard IRA
                 Adoption Agreement. Your purchase must be equal to or greater
                 than the $500 minimum initial investment requirement, but no
                 more than $2,000 if you are making a regular IRA
                 contribution. Rollover contributions are generally limited to
                 the amount withdrawn within, the past 60 days, from an IRA or
                 other qualified Retirement Plan. If you need assistance with
                 the forms or have any questions about the Trust, 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 powers of
                 attorney), please call us to determine which additional forms
                 you may need.
 
                 Because of the risks associated with common stock
                 investments, the Trust is intended to be a long-term
                 investment vehicle and is not designed to provide investors
                 with a means of speculating on short-term market movements.
                 Consequently, the Trust reserves the right to reject any
                 specific purchase (and exchange purchase) request. The Trust
                 also reserves the right to suspend the offering of shares for
                 a period of time.

IMPORTANT NOTE ON EXPENSES
                 Shares of each Portfolio are purchased at the next-determined
                 net asset value per share after your investment has been
                 received. Purchases of the Extended Market and Small
                 Capitalization Stock Portfolios are subject to a portfolio
                 transaction fee of 1%, while purchases of the Total Stock
                 Market Portfolio are subject to a 0.25% portfolio transaction
                 fee. In addition, all six Portfolios charge a $10 annual
                 account maintenance fee. See "Trust Expenses." The Trust is
                 offered on a no-load basis (i.e., there are no sales
                 commissions or 12b-1 fees).

ADDITIONAL INVESTMENTS
                 Subsequent investments to regular accounts may be made by
                 mail ($100 minimum), wire ($1,000 minimum), written exchange
                 from another Vanguard Fund account ($100 minimum), or
                 Vanguard Fund Express. However, the Trust reserves the right
                 to reject any specific purchase request, whether it be made
                 by check, wire, exchange from another Vanguard Fund account,
                 or Vanguard Fund Express. Subsequent investments to
                 Individual Retirement Accounts may be made by mail ($100
                 minimum) or exchange from another Vanguard Fund account. In
                 some instances, contributions may be made by wire or Vanguard
                 Fund Express. Please call us for more information on these
                 options.
                 -------------------------------------------------------------
 
<PAGE>
                                                      ADDITIONAL INVESTMENTS
                          NEW ACCOUNT                  TO EXISTING ACCOUNTS
 
PURCHASING BY MAIL Please include the amount        Additional investments
Complete and sign  of your initial                  should include the Invest-
the enclosed       investment and indicate          by-Mail remittance form
Account            the Portfolio(s) you have        attached to your Fund
Registration Form  selected on the                  confirmation statements.
                   registration form, make          Please make your check
                   your check payable to The        payable to The Vanguard
                   Vanguard Group                   Group--(Portfolio Number),
                   --(Portfolio Number), see        see below for the
                   below for the appropriate        appropriate portfolio
                   portfolio number, and            number, write your account
                   mail to:                         number on your check and,
                   VANGUARD FINANCIAL CENTER        using the return envelope
                   P.O. BOX 2600                    provided, mail to the
                   VALLEY FORGE, PA 19482           address indicated on the
                                                    Invest-by-Mail Form.
 
For express or     VANGUARD FINANCIAL CENTER        All requests should be
registered mail,   455 DEVON PARK DRIVE             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.
 
                   VANGUARD INDEX TRUST PORTFOLIO NUMBERS:
                   500 Portfolio--40
                   Extended Market Portfolio--98
                   Total Stock Market Portfolio--85
                   Small Capitalization Stock Portfolio--48
                   Value Portfolio--06
                   Growth Portfolio--09
                   -----------------------------------------------------------
PURCHASING BY WIRE         CORESTATES BANK, N.A.
Money should be            ABA 031000011
wired to:                  CORESTATES NO. 0101 9897
                           ATTN VANGUARD
BEFORE WIRING              VANGUARD INDEX TRUST
Please contact our         NAME OF PORTFOLIO
Client Services Department ACCOUNT NUMBER
(1-800-662-2739)           ACCOUNT REGISTRATION
 
                 You should notify our Client Services Department of your
                 intended wire purchase, including the federal wire number to
                 be used, by 12:00 noon (Eastern time). To assure proper
                 receipt, please be sure your bank includes the Portfolio
                 name, 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 after completing your
                 wire arrangement. NOTE: Federal Funds wire purchase orders
                 will be accepted only when the Trust and Custodian Banks are
                 open for business.
                 -------------------------------------------------------------
<PAGE>
PURCHASING BY EXCHANGE (from a Vanguard account)
                 Telephone exchanges are not accepted for Vanguard Index
                 Trust. You may, however, open an account by exchange by
                 providing the appropriate information on the Account
                 Registration Form. The new account will have the same
                 registration as the existing account. However, the Trust
                 reserves the right to refuse any exchange purchase request.
                 -------------------------------------------------------------
PURCHASING BY FUND EXPRESS
Automatic Investment
                 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. To establish this Fund Express 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
                    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
                    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 Trust is required to
                 distribute net capital gains and dividend income to Trust
                 shareholders. These distributions are made to all
                 shareholders who own Trust 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 Trust shares for just a short period of
                 time. (Taxes are due on the distributions even if the
                 dividend or gain is reinvested in additional Trust shares.)
                 While the total value of your investment will be the same
                 after the distribution--the amount of the distribution will
                 offset the drop in the net asset value of the shares--you
                 should be aware of the tax implications the timing of your
                 purchase may have.    
 
<PAGE>
                 Prospective investors should, therefore, inquire about
                 potential distributions before investing. The Trust's annual
                 capital gains distribution normally occurs in December, while
                 income dividends are generally paid quarterly for the 500,
                 Total Stock Market, Value and Growth Portfolios in March,
                 June, September & December; annually for the Extended Market
                 Portfolio in December; and annually for Small Capitalization
                 Stock Portfolio in September. For additional information on
                 distributions and taxes, see the section titled "Dividends,
                 Capital Gains and Taxes."
- ------------------------------------------------------------------------------
IMPORTANT INFORMATION
ESTABLISHING OPTIONAL SERVICES
                 The easiest way to establish optional Vanguard services on
                 your account is to select the options you desire when you
                 complete your Account Registration Form. IF YOU WISH TO 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 (except for
                 the Total Stock Market, Value and Growth Portfolios). If a
                 certificate is lost, you may incur an expense to replace it.

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 Trust will not cancel any trade (e.g., 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
                 Your trade date is the date on which your account is
                 credited. If your purchase is made by check, Federal Funds
                 wire or exchange, and is received by the 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 500,
                 Extended Market, Total Stock Market, Small Capitalization
                 Stock, Value and Growth Portfolios 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 while shares
                 of the Total Stock Market Portfolio are subject to a 0.25%
                 portfolio transaction fee. (See "Trust Expenses.")
 
                 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.
- ------------------------------------------------------------------------------
<PAGE>
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 within two business days after the receipt of
                 the request in Good Order.
                 -------------------------------------------------------------
SELLING BY MAIL
                 Requests should be mailed to VANGUARD FINANCIAL CENTER,
                 VANGUARD INDEX TRUST, P.O. BOX 1120, VALLEY FORGE, PA 19482.
                 (For express or registered mail, send your request to
                 Vanguard Financial Center, Vanguard Index Trust, 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. 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 that you hold for the account.
 
                 IF YOU HAVE QUESTIONS ABOUT THIS DEFINITION AS IT PERTAINS TO
                 YOUR REQUEST, PLEASE CALL OUR CLIENT SERVICES DEPARTMENT 
                 (1-800-662-2739).
                 ------------------------------------------------------------- 
SELLING BY TELEPHONE
                 To sell shares by telephone, you or your pre-authorized
                 representative may call our Client Services Department at 1-
                 800-662-2739. The proceeds will be sent to you by mail.
                 Please see "Important Information About Telephone
                 Transactions."
                 -------------------------------------------------------------
SELLING BY FUND EXPRESS
Automatic Withdrawal
                 With 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. 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 by making an exchange to another Vanguard
                 Fund account. Exchanges to or from Vanguard Index Trust may
                 be made only by mail. Send your exchange request to VANGUARD
                 FINANCIAL CENTER, VANGUARD INDEX TRUST, P.O. BOX 1120, VALLEY
                 FORGE, PA 19482.
                 -------------------------------------------------------------
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 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.
 
<PAGE>
                 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 Trust reserves the right to revise or terminate
                 the telephone redemption privilege at any time.
 
                 The Trust 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 Trustees determines that it would be
                 detrimental to the best interests of the Trust's remaining
                 shareholders to make payment in cash, the Trust 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 Trust reserves the right to redeem shares in
                 any account that is below  $3,000 ($250 with respect to the
                 500 Portfolio). It is the Trust's current policy that, at any
                 time your total investment in the Extended Market, Total
                 Stock Market, Small Capitalization Stock, Value or Growth
                 Portfolios falls below $1,000 ($250 with respect to the 500
                 Portfolio), you may be notified that the value of your
                 account is below the Portfolio'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. These 
                 minimums do not apply to IRAs, other retirement accounts, 
                 and Uniform Gifts/Transfers to Minors Act accounts.
- ------------------------------------------------------------------------------
EXCHANGING YOUR SHARES
                 Should your investment goals change, you may exchange your
                 shares of Vanguard Index Trust for those of other available
                 Vanguard Funds. Exchanges to or from Vanguard Index Trust may
                 be made only by mail. TELEPHONE EXCHANGES ARE NOT ACCEPTED
                 FOR THE TRUST.
                 -------------------------------------------------------------
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
                 Trust 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 TRUST, P.O. BOX 1120, VALLEY FORGE, PA 19482.
<PAGE>
                 (For express or registered mail, send your request to
                 Vanguard Financial Center, Vanguard Index Trust, 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.
 
                 * The shares to be exchanged must be on deposit and not held
                   in certificate form.
 
                 * New accounts are not currently accepted in the 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.
 
                 Every effort will be made to maintain the exchange privilege.
                 However, the Trust 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 Trust'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 Trust and increase transaction costs, the
                 Trust 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 Trust during any twelve
                 month period. Notwithstanding these limitations, the Trust
                 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.
 
                 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
<PAGE>
                    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.
 
                 Neither the Trust 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.
- ------------------------------------------------------------------------------
TRANSFERRING REGISTRATION
                 You may transfer the registration of any of your Trust 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 and full
                 instructions, please call our Client Services Department (1-
                 800-662-2739).
- ------------------------------------------------------------------------------
OTHER VANGUARD SERVICES
                 For more information about any of these services, please call
                 our Investor Information Department at 1-800-662-7447.

STATEMENTS AND REPORTS
                 Vanguard will send you a confirmation statement each time you
                 initiate a transaction in your account except for
                 checkwriting redemptions from Vanguard money market accounts.
                 You will also receive a comprehensive account statement at
                 the end of each calendar quarter. The fourth-quarter
                 statement will be a year-end statement, listing all
                 transaction activity for the entire calendar year.
 
                 Financial reports on the Trust will be mailed to you semi-
                 annually, according to the Fund's fiscal year-end.
 
                 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.

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.

<PAGE>
VANGUARD FUND EXPRESS
                 Vanguard's Fund Express allows you to transfer money between
                 your Trust account and your account at a bank, savings and
                 loan association, or a credit union that is a member of the
                 Automated Clearing House (ACH) system. You may elect this
                 service on the Account Registration Form or call our Investor
                 Information Department (1-800-662-7447) for a Fund Express
                 application.
 
                 The minimum amount that can be transferred by telephone is
                 $100. However, if you have established one of the automatic
                 options, the minimum amount is $50. The maximum amount that
                 can be transferred using any of the options is $100,000.
 
                 Special rules govern how your Fund Express purchases or
                 redemptions are credited to your account. In addition, some
                 services of Fund Express cannot be used with specific
                 Vanguard Funds. For more information, please refer to the
                 Vanguard Fund Express brochure.

VANGUARD DIVIDEND EXPRESS
                 Vanguard's Dividend Express allows you to transfer your
                 dividends and/or capital gains distributions automatically
                 from your Trust account, one business day after the Trust'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 the Investor
                 Information Department (1-800-662-7447) for a Vanguard
                 Dividend Express application.

VANGUARD TELE-ACCOUNT
                 Vanguard's Tele-Account is a convenient, automated service
                 that provides share price, price change and yield quotations
                 on Vanguard Funds through any TouchTone(TM) telephone. This
                 free 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
                 free brochure offering detailed operating instructions is
                 available from our Investor Information Department
                 (1-800-662-7447).
- ------------------------------------------------------------------------------
 
<PAGE>
 
- ------------------------------------------------------------------------------
THE VANGUARD GROUP
  OF INVESTMENT
  COMPANIES
Vanguard Financial Center
P.O. Box 2900
Valley Forge, PA 19482
 
INSTITUTIONAL PARTICIPANT
  SERVICES DEPARTMENT:
1-800-523-1188
 
TRANSFER AGENT:
The Vanguard Group, Inc.
Vanguard Financial Center
Valley Forge, PA 19482
 
I      N      S      T      I      T     U     T     I     O     N     A     L
    P       R       O       S       P       E       C      T      U      S

                                APRIL 4, 1994
 
<PAGE>
 
==============================================================================
                                                A Member of The Vanguard Group
==============================================================================
PROSPECTUS--APRIL 4, 1994
- ------------------------------------------------------------------------------
FUND INFORMATION: PARTICIPANT SERVICES--1-800-523-1188
- ------------------------------------------------------------------------------
INVESTMENT OBJECTIVE AND POLICIES
                 Vanguard Index Trust (the "Trust") is an open-end diversified
                 investment company designed as an "index" fund. THE TRUST
                 CONSISTS OF SIX PORTFOLIOS: THE 500, EXTENDED MARKET, TOTAL
                 STOCK MARKET, SMALL CAPITALIZATION STOCK, VALUE AND GROWTH
                 PORTFOLIOS. Each of these Portfolios invests in common stocks
                 in order to match the investment performance of a distinct
                 market index.
- ------------------------------------------------------------------------------
IMPORTANT NOTE
                 This Prospectus is intended exclusively for participants in
                 employer-sponsored retirement or savings plans, such as tax-
                 qualified pension and profit-sharing plans and 401(k) thrift
                 plans, as well as 403(b) custodial accounts for non-profit
                 educational and charitable organizations. Another version of
                 this Prospectus, containing information on how to open a
                 personal investment account with the Trust, is available for
                 individual investors. To obtain a copy of that version of the
                 Prospectus, please call 1-800-662-7447.
- ------------------------------------------------------------------------------
OPENING AN ACCOUNT
                 A Portfolio of the Trust is an investment option under a
                 retirement or savings program sponsored by your employer. The
                 administrator of your retirement plan or your employee
                 benefits office can provide you with detailed information on
                 how to participate in your plan and how to elect a Portfolio
                 of the Trust as an investment option.
              
                 If you have any questions about the Trust, please contact
                 Participant Services at 1-800-523-1188. If you have any
                 questions about your plan account, contact your plan
                 administrator or the organization that provides recordkeeping
                 services for your plan.
- ------------------------------------------------------------------------------
ABOUT THIS PROSPECTUS
                 This Prospectus is designed to set forth concisely the
                 information you should know about the Trust before you
                 invest. It should be retained for future reference. A
                 "Statement of Additional Information" containing additional
                 information about the Trust has been filed with the
                 Securities and Exchange Commission. This Statement is dated
                 April 4,, 1994 and has been incorporated by reference into
                 this Prospectus. A copy may be obtained without charge by
                 writing to the Trust or by calling the Investor Information
                 Department.
- ------------------------------------------------------------------------------
<TABLE>
TABLE OF CONTENTS
<CAPTION>
                                    Page                                        Page                                        Page
<S>                                         <C>                                         <C>
Highlights..........................  2     Investment Risks.................... 13     Performance Record.................. 22
Trust Expenses......................  4     Who Should Invest................... 14     Dividends, Capital Gains and Taxes.. 24
Financial Highlights................  6     Implementation of Policies.......... 16     The Share Price of Each Portfolio... 24
Yield and Total Return..............  9     Investment Limitations.............. 21     General Information................. 25
Investment Objectives............... 10     Management of the Trust............. 21     Service Guide....................... 26
Investment Policies................. 12     Investment Adviser.................. 22
 
- ------------------------------------------------------------------------------
</TABLE>
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE COMMISSION PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
- ------------------------------------------------------------------------------
<PAGE>
 
                                  HIGHLIGHTS
OBJECTIVE AND POLICIES
                 The Trust is an open-end diversified investment company
                 designed as an "index" fund. Shares of the Trust are offered
                 on a no-load basis, although the Trust incurs certain
                 distribution expenses. The Trust consists of six separate
                 Portfolios, each of which invests in common stocks in order
                 to match the performance of a selected market index. There is
                 no assurance, however, that the Trust will achieve its stated
                 objective.                                            Page 10
- ------------------------------------------------------------------------------
SIX SEPARATE PORTFOLIOS
                 Investors may choose to invest in any of six Portfolios of
                 the Trust:
 
                 500 PORTFOLIO--seeks to match the investment performance of
                 the Standard & Poor's 500 Composite Stock Price Index, an
                 index emphasizing large-capitalization stocks.
 
                 EXTENDED MARKET PORTFOLIO--seeks to match the investment
                 performance of the Wilshire 4500 Index, an index consisting 
                 of medium- and small-capitalization stocks.
 
                 TOTAL STOCK MARKET PORTFOLIO--seeks to match the investment
                 performance of the Wilshire 5000 Index, an index consisting
                 of all regularly and publicly traded U.S. stocks.
 
                 SMALL CAPITALIZATION STOCK PORTFOLIO--seeks to match the
                 investment performance of the Russell 2000 Small Stock Index,
                 an index consisting of 2,000 small-capitalization common
                 stocks.
 
                 VALUE PORTFOLIO--seeks to match the investment performance of
                 the S&P/BARRA Value Index, an index consisting of stocks
                 selected from the Standard & Poor's 500 Index with lower than
                 average ratios of market price to book value.
 
                 GROWTH PORTFOLIO--seeks to match the investment performance
                 of the S&P/BARRA Growth Index, an index consisting of stocks
                 selected from the Standard & Poor's 500 Index with higher
                 than average ratios of market price to book value.    Page 12
- ------------------------------------------------------------------------------
RISK CHARACTERISTICS
                 As mutual funds investing in common stocks, all six
                 Portfolios of the Trust are subject to market risk, which is
                 the possibility that common stock prices will decline,
                 sometimes substantially over short or extended periods. Due
                 to differences in the securities they hold, the six
                 Portfolios may exhibit varying levels of volatility.  Page 13
- ------------------------------------------------------------------------------
THE VANGUARD GROUP
                 The Trust is a member of The Vanguard Group of Investment
                 Companies, a group of 32 investment companies with 78
                 distinct investment portfolios and total assets in excess of
                 $120 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 21
- ------------------------------------------------------------------------------
<PAGE>
INVESTMENT ADVISER
                 The Trust receives investment advisory services on an at-cost
                 basis from Vanguard's Core Management Group. As a result, the
                 Trust receives its investment advisory services at a
                 substantially lower cost than would be possible if the Trust
                 paid an investment advisory fee to an external investment
                 adviser.                                              Page 22
- ------------------------------------------------------------------------------
FEES AND EXPENSES
                 A portfolio transaction fee of 1% is deducted from purchases
                 of the Extended Market and Small Capitalization Stock
                 Portfolios; a 0.25% portfolio transaction fee is deducted
                 from purchases of the Total Stock Market Portfolio. Portfolio
                 transaction fees are paid to the Portfolios to offset
                 transaction costs of buying securities of small- and medium-
                 sized companies.                                       Page 4
- ------------------------------------------------------------------------------
DIVIDEND POLICY
                 The Trust distributes substantially all of its net investment
                 income in the form of dividends. The 500, Total Stock Market,
                 Value and Growth Portfolios distribute dividends quarterly,
                 whereas the Extended Market and Small Capitalization Stock
                 Portfolios distribute dividends annually. In all six
                 Portfolios, net capital gains, if any, are distributed
                 annually.                                             Page 24
- ------------------------------------------------------------------------------
SPECIAL CONSIDERATIONS
                 (1)    Each Portfolio may invest a portion of its assets in
                 futures contracts, options, convertible securities & swap
                 agreements.                                           Page 19
 
                 (2) Each Portfolio may invest in short-term fixed income
                 securities.                                           Page 19
 
                 (3) Each Portfolio may lend its securities.           Page 20
 
                 (4) Each Portfolio may borrow money.                  Page 21
- ------------------------------------------------------------------------------
 
<PAGE>
TRUST EXPENSES
                 The following table illustrates ALL expenses and fees that
                 you would incur as a shareholder of the Trust. The expenses
                 and fees for the 500, Extended Market, Total Stock Market,
                 Value and Growth Portfolios are based on the year ended
                 December 31, 1993. The fees and expenses for the Small
                 Capitalization Stock Portfolio are based on the year ended
                 September 30, 1993.
<TABLE>
<CAPTION>
                                                     TOTAL                                     SMALL
SHAREHOLDER                           EXTENDED       STOCK                            CAPITALIZATION
TRANSACTION                   500       MARKET      MARKET       VALUE      GROWTH             STOCK
EXPENSES                PORTFOLIO    PORTFOLIO   PORTFOLIO   PORTFOLIO   PORTFOLIO      PORTFOLIO***
- ------------------------------------------------------------------------------------------------------
<S>                  <C>          <C>          <C>         <C>         <C>         <C>
Sales Load Imposed                                        *
  on Purchases.......        None         None*       None*       None        None              None*
Sales Load Imposed
  on Reinvested
  Dividends..........        None         None        None        None        None              None
Redemption Fees......        None         None        None        None        None              None
Exchange Fees........        None         None        None        None        None              None
<FN>
  *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>
<TABLE>
<CAPTION>
                                                     TOTAL                                     SMALL
                                      EXTENDED       STOCK                            CAPITALIZATION
ANNUAL FUND OPERATING         500       MARKET      MARKET       VALUE      GROWTH             STOCK
EXPENSES                PORTFOLIO    PORTFOLIO   PORTFOLIO   PORTFOLIO   PORTFOLIO      PORTFOLIO***
- -----------------------------------------------------------------------------------------------------
<S>                   <C>         <C>          <C>         <C>         <C>         <C>
Management &
  Administrative
  Expenses++..........      0.15%        0.15%       0.15%       0.14%       0.13%             0.13%
Investment Advisory
  Fees................     None         None        None        None        None              None
12b-1 Fees............     None         None        None        None        None              None
Other Expenses
  Distribution Costs..      0.03         0.02        0.03        0.02        0.02              0.02
  Miscellaneous
    Expenses..........      0.01         0.03        0.02        0.04        0.05              0.03
                            ----         ----        ----        ----        ----              ----
Total Other Expenses..      0.04         0.05        0.05        0.06        0.07              0.05
                            ----         ----        ----        ----        ----              ----
    TOTAL OPERATING
      EXPENSES........      0.19%        0.20%       0.20%       0.20%       0.20%             0.18%
                            ====         ====        ====        ====        ====              ====
 
<FN>
***Formerly Vanguard Small Capitalization Stock Fund, Inc.
 ++In addition to these costs, each Portfolio assesses an annual account maintenance fee of $10.
 
</TABLE>
 
                 The purpose of this table is to assist you in understanding
                 the various costs and expenses that you would bear directly
                 or indirectly as an investor in the Trust.

THREE PORTFOLIOS ASSESS TRANSACTION FEES
                 The Extended Market and Small Capitalization Stock Portfolios
                 assess a portfolio transaction fee on purchases of Portfolio
                 shares equal to 1% of the dollar amount invested; the Total
                 Stock Market Portfolio assesses a portfolio transaction fee
                 equal to 0.25% 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 Extended
                 Market, Small Capitalization Stock and Total Stock Market
                 Portfolios and all subsequent purchases (including purchases
<PAGE>
                 made by exchange from another Vanguard Fund or from the other
                 portfolios of the Trust), 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.)
 
                 The 1% and 0.25% fees represent Vanguard's estimate of the
                 brokerage and other transaction costs incurred by the
                 Extended Market, Small Capitalization Stock and Total Stock
                 Market Portfolios in acquiring stocks of mid-sized and small
                 capitalization companies. Without the fees, the three
                 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 following example illustrates the expenses that you would
                 incur on a $1,000 investment over various time periods,
                 assuming (1) a 5% annual rate of return and (2) redemption at
                 the end of each 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; and the 0.25% transaction
                 fee for the Total Stock Market Portfolio. As noted in the
                 table on the previous page, the Trust charges no redemption
                 fees of any kind.
<TABLE>
<CAPTION>
                                                                      1 YEAR           3 YEARS          5 YEARS         10 YEARS
                                                                       -----            -----            -----           ------
                                <S>                                <C>              <C>              <C>              <C>
                                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
</TABLE>
<PAGE>
 
                 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 ended December 31, 1993, (September 30, 1993 with
                 respect to the Small Capitalization Stock Portfolio) have
                 been audited by Price Waterhouse, independent accountants,
                 whose reports thereon were unqualified. This financial
                 information should be read in conjunction with the Trust's
                 financial statements and notes thereto, which are
                 incorporated by reference in the Statement of Additional
                 Information and in this Prospectus, and which appear, along
                 with the reports of Price Waterhouse, in the Trust'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,
                 in the Small Capitalization Stock Fund's 1993 Annual Report
                 to Shareholders. For a more complete discussion of the
                 Trust's performance, please see the Trust's 1993 Annual
                 Report to Shareholders, which may be obtained free of charge
                 by writing to the Trust or calling Participant Services at
                 1-800-523-1188.
 
<PAGE>
<TABLE>
<CAPTION>
                                         ----------------------------------------------------------------------------------------
                                                                               500 PORTFOLIO
                                         ----------------------------------------------------------------------------------------
                                                                          YEAR ENDED DECEMBER 31,
                                         ----------------------------------------------------------------------------------------
                                              1993     1992     1991     1990    1989    1988    1987    1986    1985      1984
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                      <C>      <C>      <C>      <C>      <C>     <C>     <C>     <C>     <C>        <C>
NET ASSET VALUE, BEGINNING OF YEAR.......   $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...................     1.13     1.12     1.15     1.17    1.20    1.08     .88     .89     .91       .88
 Net Realized and Unrealized Gain
  (Loss) on Investments..................     2.89     1.75     8.20    (2.30)   7.21    2.87     .36    3.30    5.08       .30
                                             -----    -----    -----    -----   -----   -----   -----   -----   -----     -----
   TOTAL FROM INVESTMENT OPERATIONS......     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....    (1.13)   (1.12)   (1.15)   (1.17)  (1.20)  (1.10)   (.69)   (.89)   (.91)     (.88)
 Distributions from Realized Capital
  Gains..................................     (.03)    (.10)    (.12)    (.10)   (.75)   (.32)   (.17)  (2.02)  (1.61)     (.48)
                                             -----    -----    -----    -----   -----   -----   -----   -----   -----     -----
   TOTAL DISTRIBUTIONS...................    (1.16)   (1.22)   (1.27)   (1.27)  (1.95)  (1.42)   (.86)  (2.91)  (2.52)    (1.36)
- ---------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR.............   $43.83   $40.97   $39.32   $31.24  $33.64  $27.18  $24.65  $24.27  $22.99    $19.52
=================================================================================================================================
TOTAL RETURN*............................     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 Year (Millions).......   $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%     .20%     .22%    .21%    .22%    .26%    .28%    .28%      .27%
Ratio of Net Investment Income to Average
Net  Assets..............................     2.65%    2.81%    3.07%    3.60%   3.62%   4.08%   3.15%   3.40%   4.09%     4.53%
Portfolio Turnover Rate..................        6%+      4%+      5%+     23%+     8%     10%     15%     29%     36%       14 %
 
<FN>
*Total return figures do not reflect the annual account maintenance fee of $10 or applicable portfolio transaction fees.
+Portfolio turn over rates excluding in-kind redemptions were 2%, 1%, 1% and 6%, respectively.
</TABLE>
<TABLE>
<CAPTION>
                                                            ----------------------------------------------------------------------
                                                                                      EXTENDED MARKET PORTFOLIO
                                                            ----------------------------------------------------------------------
                                                                               YEAR ENDED DECEMBER 31,
                                                            ----------------------------------------------------------------------
                                                                                                                         DEC. 21+
                                                               1993      1992      1991      1990      1989      1988  TO 31, 1987
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                                          <C>       <C>       <C>       <C>       <C>       <C>        <C>
NET ASSET VALUE, BEGINNING OF PERIOD........................ $17.35    $15.82    $11.48    $13.92    $11.60    $ 9.99     $10.00
                                                             ------    ------    ------    ------    ------    ------     ------
INVESTMENT OPERATIONS
  Net Investment Income.....................................    .23       .24       .25       .30       .26       .34        .03
  Net Realized and Unrealized Gain (Loss) on Investments....   2.28      1.72      4.54     (2.25)     2.52      1.63       (.04)
                                                             ------    ------    ------    ------    ------    ------     ------ 
   TOTAL FROM INVESTMENT OPERATIONS.........................   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 Gain..................   (.20)     (.18)     (.20)     (.16)     (.23)     (.16)        --
                                                             ------    ------    ------    ------    ------     ------    ------
   TOTAL DISTRIBUTIONS......................................   (.43)     (.43)     (.45)     (.49)     (.46)     (.36)        --
- ----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD.............................. $19.43     $17.35   $15.82    $11.48    $13.92    $11.60     $ 9.99
==================================================================================================================================
TOTAL RETURN*...............................................  14.49%     12.47%   41.85%   (14.05)%   24.10%    19.75%    (0.10)%
==================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period (Millions)........................   $928       $585     $372      $179      $147       $35        $5
Ratio of Expenses to Average Net Assets.....................    .20%       .20%     .19%      .23%      .23%      .24%        0% 
Ratio of Net Investment Income to Average Net Assets........   1.48%      1.73%    2.14%     2.68%     2.92%     2.90%        0%
Portfolio Turnover Rate.....................................     13%         9%      11%        9%       14%       26%        3%
 
<FN>
*Total return figures do not reflect the annual account maintenance fee of $10 or applicable portfolio transaction fees.
+Commencement of Operations.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                            ---------------------------------   --------------------------------   -------------------------------
                                       TOTAL STOCK                 
                                    MARKET PORTFOLIO                    GROWTH PORTFOLIO                   VALUE PORTFOLIO
                            ---------------------------------   --------------------------------   -------------------------------
                                YEAR ENDED   MARCH 16+, 1992,       YEAR ENDED     NOV, 2, 1992,      YEAR ENDED     NOV. 2, 1992,
                             DEC. 31, 1993   TO DEC. 31, 1992    DEC. 31, 1993  TO DEC. 31, 1992   DEC. 31, 1993  TO DEC. 31, 1992
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>                <C>              <C>               <C>             <C>              <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD........        $10.84             $10.00           $10.26            $10.00          $10.30           $10.00
                                    ------             ------           ------            ------          ------           ------
INVESTMENT OPERATIONS
 Net Investment Income......           .26                .23              .21               .06             .38              .07
 Net Realized and Unrealized     	
  Gain (Loss) on Investments           .88                .84             (.06)              .26            1.50              .30 
                                    ------             ------           ------            ------          ------           ------
   TOTAL FROM INVESTMENT
     OPERATIONS.............          1.14               1.07              .15               .32            1.88              .37
- ----------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment
  Income....................          (.26)              (.23)            (.21)             (.06)           (.38)            (.07)
 Distributions from Realized
  Capital Gains.............          (.03)                --               --                --            (.06)              --
                                    ------             ------           ------             ------         ------           ------
   TOTAL DISTRIBUTIONS......          (.29)              (.23)            (.21)             (.06)           (.44)            (.07)
- ----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF
 PERIOD.....................        $11.69             $10.84           $10.20            $10.26          $11.47           $10.30
==================================================================================================================================
TOTAL RETURN**..............         10.62%             10.41%            1.53%             3.19%          18.35%            3.70%
==================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period
 (Millions).................          $512               $275              $51               $21            $190              $24
Ratio of Expenses to Average
Net  Assets.................           .20%               .21%*            .20%                0%*            20%               0%
Ratio of Net Investment
Income to  Average Net
Assets......................          2.31%              2.42%*           2.10%             2.85%*          3.26%            3.46%
Portfolio Turnover Rate.....             1%                 3%              36%                2%             30%               4%
 
<FN>
 *Annualized.
**Total return figures do not reflect the annual account maintenance fee of $10 or applicable portfolio transaction fees.
+Commencement of operations.
</TABLE>
 
<PAGE>
<TABLE>
<CAPTION>
                                   ------------------------------------------------------------------------------------------------
                                                                SMALL CAPITALIZATION STOCK PORTFOLIO*
                                   ------------------------------------------------------------------------------------------------
                                                                       YEAR ENDED SEPTEMBER 30,
                                   ------------------------------------------------------------------------------------------------
                                      1993     1992     1991     1990(1)  1989+   1988    1987    1986    1985     1984      1983
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>      <C>      <C>      <C>      <C>     <C>     <C>     <C>     <C>      <C>       <C>
NET ASSET VALUE, BEGINNING OF YEAR. $12.63   $12.03   $ 8.55   $11.88   $11.96  $15.73  $13.24  $11.68  $13.15   $19.77    $12.50
                                    ------   ------   ------   ------   ------  ------  ------  ------  ------   ------    ------
INVESTMENT OPERATIONS
 Net Investment Income (Loss)......    .20      .19      .20      .17      .10     .03    (.04)   (.01)   (.04)     .14      (.08)
 Net Realized and Unrealized Gain
  (Loss) on Investments............   3.73      .88     3.60    (3.46)    2.13   (2.59)   4.42    1.57    (.51)   (4.25)     8.57
                                     -----    -----    -----    -----    -----   -----   -----   -----   -----    -----     -----
  TOTAL FROM INVESTMENT OPERATIONS.   3.93     1.07     3.80    (3.29)    2.23   (2.56)   4.38    1.56    (.55)   (4.11)     8.49
- -----------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment
  Income...........................   (.18)    (.18)    (.18)    (.04)    (.14)     --      --      --    (.15)      --      (.30)
 Distributions from Realized
Capital Gains......................   (.15)    (.29)    (.14)      --    (2.17)  (1.21)  (1.89)     --    (.77)   (2.51)     (.92)
                                     -----    -----    -----    -----    -----   -----   -----   -----   -----    -----     -----
  TOTAL DISTRIBUTIONS..............   (.33)    (.47)    (.32)    (.04)   (2.31)  (1.21)  (1.89)     --    (.92)   (2.51)    (1.22)
- -----------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR....... $16.23   $12.63   $12.03   $ 8.55   $11.88  $11.96  $15.73  $13.24  $11.68   $13.15    $19.77
===================================================================================================================================
TOTAL RETURN++.....................  31.60%    9.34%   45.91%  (27.73)%  18.83% (14.30)% 38.02%  13.33%  (3.67)% (22.89)%   70.44%
===================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Year (Millions).   $432     $202     $111      $40      $20     $27     $35     $31     $32      $37       N/A
Ratio of Expenses to Average Net
Assets.............................    .18%     .18%     .21%     .31%    1.00%    .95%    .92%    .92%   1.00%    1.05%     1.41%
Ratio of Net Investment Income
(Loss) to Average Net Assets.......   1.47%    1.65%    2.11%    1.91%     .65%    .24%   (.25%)  (.06%)  (.28%)   1.11%     (.54%)
Portfolio Turnover Rate............     26%      26%      33%      40%     160%     68%     92%     92%    103%     100%       83%
 
<FN>
(1) Adjusted to reflect a 3-for-1 stock split as of February 3, 1990.
*Formerly Vanguard Small Capitalization Stock Fund, Inc. (the "Fund").
 +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.
</TABLE>
- ------------------------------------------------------------------------------
YIELD AND TOTAL RETURN
                 From time-to-time a Portfolio of the Trust 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.
 
                 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.
 
                 Additionally, the Portfolios may compare their performance to
                 that of their comparative indexes. The target benchmarks
                 include the Standard & Poor's 500 Composite Stock
<PAGE>
                 Price Index, the Wilshire 4500 Index, the Wilshire 5000
                 Index, the Russell 2000 Small Stock Index, the S&P/BARRA
                 Value Index and the S&P/BARRA Growth Index.
- ------------------------------------------------------------------------------
INVESTMENT OBJECTIVES
EACH PORTFOLIO SEEKS TO MATCH THE INVESTMENT PERFORMANCE OF ITS RESPECTIVE
INDEX
                 The Trust is a no-load, open-end diversified investment
                 company designed as an "index" fund. The Trust consists of
                 six Portfolios, each of which seeks to provide investment
                 results that correspond to a particular stock market index.
                 The correlation between the performance of each of the
                 Trust's Portfolios 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 pie chart below illustrates how, as measured by
                 capitalization, the Standard & Poor's 500 Index, the Wilshire
                 4500 Index and the Russell 2000 Index cover the entire U.S.
                 equity market, as represented by the Wilshire 5000 Index:
 
                       GRAPHIC PIE CHART HERE ON PRINTED PROSPECTUS

                 * 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.
 
<PAGE>
 
                 * The TOTAL STOCK MARKET PORTFOLIO seeks to replicate the
                   aggregate price and yield performance of the Wilshire 5000
                   Index, an index 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 under 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 pie chart below illustrates how, as measured by market
                 capitalization, the S&P 500 Index is divided into the S&P/
                 BARRA Value and S&P/BARRA Growth Indexes.
 
                        GRAPHIC PIE CHART HERE ON PRINTED PROSPECTUS

                 * 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 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 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.
 
                 These investment objectives are fundamental and so cannot be
                 changed without the approval of a majority of a Portfolio's
                 shareholders.
- ------------------------------------------------------------------------------
<PAGE>
INVESTMENT POLICIES
ALL SIX PORTFOLIOS USE A "PASSIVE" APPROACH TO INVEST IN COMMON STOCKS
                 The six Portfolios of the Trust are not managed according to
                 traditional 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 Portfolios, utilizing a "passive" or
                 "indexing" investment approach, attempt to duplicate the
                 investment performance of their respective indexes through
                 statistical procedures. The Portfolios are managed without
                 regard to tax ramifications.
 
                 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 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
<PAGE>
                 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.
 
                 These investment policies are not fundamental and so may be
                 changed by the Board of Trustees without shareholder
                 approval.
- ------------------------------------------------------------------------------
INVESTMENT RISKS
EACH PORTFOLIO IS SUBJECT TO MARKET RISK
                 As mutual funds investing primarily in common stocks, the
                 Portfolios of the Trust are subject to market risk -- i.e.,
                 the possibility that common stock prices will decline over
                 short or even extended periods. The U.S. stock market tends
                 to be cyclical, with periods when stock prices generally rise
                 and periods when prices generally decline.
 
                 To illustrate the volatility of stock prices, the following
                 table sets forth the extremes for stock market returns as
                 well as the average return for the period from 1926 to 1993,
                 as measured by the S&P 500 Composite Stock Price Index:
<TABLE>
<CAPTION>
                                                             U.S. STOCK MARKET RETURNS (1926-1993)
                                                                  OVER VARIOUS TIME HORIZONS
 
                                                         1 YEAR             5 YEARS           10 YEARS           20 YEARS
                                                          -----              -----             ------             ------
                                    <S>                <C>                <C>                <C>                <C>
                                    Best                 +53.9%             +23.9%             +20.1%             +16.9%
                                    Worst                -43.3              -12.5              - 0.9              + 3.1
                                    Average              +12.3              +10.3              +10.6              +10.6
 
</TABLE>
 
                 As shown, 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%. While this average return can be used as a guide for
                 setting reasonable expectations for future stock market
                 returns, it may not be useful for forecasting future returns
                 in any particular period, as stock returns are quite volatile
                 from year-to-year.

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
<PAGE>
                 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.
- ------------------------------------------------------------------------------
WHO SHOULD INVEST
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 a low-cost, "passive"
                 approach for investing in a diversified portfolio of common
                 stocks. Unlike other equity mutual funds, which generally
                 seek to "beat" stock market averages with unpredictable
                 results, all six Portfolios seek to "match" their respective
                 indexes and thus are expected to provide a highly predictable
                 return relative to their benchmarks.
 
                 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 medium- and small-
                   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.
 
<PAGE>
                 * 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 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.
 
                 The share price of each Portfolio is expected to be volatile,
                 and investors should be able to tolerate sudden, sometimes
                 substantial fluctuations in the value of their investment. No
                 assurance can be given that the Portfolios will achieve their
                 stated objectives or that shareholders will be protected from
                 the risks inherent in equity investing. Investors may wish to
                 purchase shares on a regular, periodic basis (dollar-cost
                 averaging)  rather than investing in one lump sum in order to
                 reduce the risk of investing all their monies in common
                 stocks at a particularly unfavorable time.
 
                    The Trust is intended to be a long-term investment vehicle
                 and is not designed to provide investors with a means of
                 speculating on short-term market movements. Investors who
                 engage in excessive account activity generate additional
                 costs which are borne by all of the Trust's shareholders. In
                 order to minimize such costs the Trust has adopted the
                 following policies. The Trust reserves the right to reject
                 any purchase request (including exchange purchases from other
                 Vanguard portfolios) that is reasonably deemed to be
                 disruptive to efficient portfolio management, either because
                 of the timing of the investment or previous excessive trading
                 by the investor. Finally, the Trust reserves the right to
                 suspend the offering of its shares.    
 
                    Investors should not consider the Trust a complete
                 investment program, but should maintain holdings of
                 securities with different risk characteristics--including
                 common stocks, bonds and money market instruments. Investors
                 may also wish to complement an investment in the Trust with
                 other types of common stock investments.    
- ------------------------------------------------------------------------------
<PAGE>
IMPLEMENTATION OF POLICIES
                 Each Portfolio of the Trust utilizes a number of investment
                 practices in an effort to match the investment performance of
                 its respective index.

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.
 
                 The following table illustrates the changing proportions that
                 the S&P 500 Index and the Wilshire 4500 Index have
                 represented in the Wilshire 5000 Index since 1984.
<PAGE>
<TABLE>
<CAPTION>
                 WILSHIRE 5000 INDEX                  1984    1985    1986    1987    1988    1989    1990    1991    1992    1993
                 -------------------                  ----    ----    ----    ----    ----    ----    ----    ----    ----    ----
                 <S>                                   <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
                 S&P 500..........................     69%     69%     70%     71%     71%     73%     72%     75%     71%     67%
                 Wilshire 4500....................     31%     31%     30%     29%     29%     27%     28%     25%     29%     33%
                                                     ----    ----    ----    ----    ----    ----    ----    ----    ----    ----
                                                      100%    100%    100%    100%    100%    100%    100%    100%    100%    100%
 
</TABLE>
 
                 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 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 Portfolio will be selected utilizing a
                 statistical sampling technique known as "optimization." This
                 process selects stocks for the Portfolio so that various
                 industry weightings, market capitalizations, and fundamental
                 characteristics (e.g. price-to-book, price-to-earnings, debt
                 to asset ratios, and dividend yields) closely approximate
                 those of the appropriate Index. For instance, if 10% of the
                 capitalization of the Wilshire 4500 Index consists of utility
                 companies with relatively large stock capitalizations, then
                 the Extended Market Portfolio is constructed so that
                 approximately 10% of the Portfolio's assets are invested in
                 the stocks of utility companies with relatively large
                 capitalizations. The Total Stock Market and Small
                 Capitalization Stock Portfolios are constructed using a
                 sampling technique known as optimization.
 
                 This sampling technique 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 Portfolio's target benchmarks. Over
                 time, the correlation between the performance of the Extended
<PAGE>
                 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.

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.
 
<PAGE>
                 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 Indexes, which are determined composed and calculated
                 by S&P without regard to the 500, Value and Growth
                 Portfolios.

EACH PORTFOLIO MAY INVEST IN SHORT-TERM FIXED INCOME SECURITIES
                 Although all six Portfolios normally seek to remain
                 substantially fully invested in common stocks, the Portfolios
                 of the Trust may invest temporarily in certain short-term
                 fixed income securities. 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.

EACH PORTFOLIO MAY USE FUTURES CONTRACTS, OPTIONS AND WARRANTS, CONVERTIBLE
SECURITIES AND SWAP AGREEMENTS
                 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). Futures contracts,
                 options, warrants, convertible securites 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 its 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. However, the
                 Portfolios will not use futures contracts, options, warrants,
                 convertible securities and swap agreements for speculative
                 purposes or to leverage their net assets. Accordingly, the
                 primary risks associated with the use of futures contracts,
                 options, warrants, convertible securities and swap agreements
                 by the Portfolios are: (i) imperfect correlation between the
<PAGE>
                 change in market value of the stocks held by a Portfolio and
                 the prices of futures contracts, options, warrants,
                 convertible securities and swap agreements; and (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. The risk of imperfect correlation will be
                 minimized by investing only in those contracts whose behavior
                 is expected to resemble that of a Portfolio's underlying
                 securities. The risk that a Portfolio will be unable to close
                 out a futures position will be minimized by entering into
                 such transactions on an exchange with an active and liquid
                 secondary market. However options, warrants, convertible
                 securities and swap agreements purchased or sold over-the-
                 counter may be less liquid than exchange traded securities.
                 Illiquid securities, in general, may not represent more than
                 15% of the net assets of a Portfolio of the Trust.
 
                 Since there are no futures traded on the S&P/BARRA Value or
                 Growth Indexes, it will be necessary for the Value and Growth
                 Portfolios to utilize a composite of other
                 futures contracts to simulate the performance of each of
                 these Indexes. This process may magnify the "tracking error"
                 of each Portfolio's performance compared to that of the
                 Indexes, due to lower correlation of the selected futures
                 with the Indexes. 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 the indexes.
 
                 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.

EACH PORTFOLIO MAY LEND ITS SECURITIES
                 Each Portfolio of the Trust may lend its investment
                 securities to qualified institutional investors for either
                 short-term or long-term purposes of realizing additional
                 income. Loans of securities by a Portfolio will be
                 collateralized by cash, letters of credit, or securities
                 issued or guaranteed by the U.S. Government or its agencies.
                 The collateral will equal at least 100% of the current market
                 value of the loaned securities, and such loans may not exceed
                 331/3% of the value of the Portfolio's securities.

PORTFOLIO TURNOVER IS EXPECTED TO BE LOW
                 Although each Portfolio generally seeks to invest for the
                 long term, the six Portfolios of the Trust retain the right
                 to sell securities irrespective of how long they have been
                 held. However, because of the "passive" investment management
                 approach of the Trust, the portfolio turnover rate for each
                 Portfolio is expected to be under 50%, a generally lower
                 turnover rate than for most other investment companies. A
                 portfolio turnover rate of 50% would occur if one half of a
                 Portfolio's securities were sold within one year. Ordinarily,
<PAGE>
                 securities will be sold from a Portfolio only to reflect
                 certain administrative changes in an index (including mergers
                 or changes in the composition of an index) or to accommodate
                 cash flows into and out of each Portfolio while maintaining
                 the similarity of a Portfolio to its benchmark index.
- ------------------------------------------------------------------------------
INVESTMENT LIMITATIONS
THE TRUST HAS ADOPTED CERTAIN FUNDAMENTAL LIMITATIONS
                 The Trust has adopted certain limitations on its investment
                 practices. Specifically, each Portfolio of the Trust 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 Portfolio's assets would be invested in
                     the securities of such issuer;
                 (b) with respect to 75% of its assets, purchase more than 10%
                     of the voting securities of any issuer;
                 (c) invest more than 25% of its assets in any one industry;
                     and
                 (d) borrow money, except that a Portfolio 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 value of the
                     Portfolio's net assets (including the amount borrowed and
                     the value of any outstanding reverse repurchase
                     agreements) at the time the borrowing is made. Whenever
                     borrowings exceed 5% of the value of a Portfolio's net
                     assets, the Portfolio will not make any additional
                     investments.
 
                 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 only with the approval of a majority of a
                 Portfolio's shareholders.
- ------------------------------------------------------------------------------
MANAGEMENT OF THE TRUST
VANGUARD ADMINISTERS AND DISTRIBUTES THE TRUST
                 The Trust is a member of The Vanguard Group of Investment
                 Companies, a family of 32 investment companies with 78
                 distinct portfolios and total assets in excess of $120
                 billion. 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
                 management, administrative 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).
 
                 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. 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 can be found in the
                 Statement of Additional Information.
 
<PAGE>
                 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.
 
                 Vanguard provides distribution and marketing services to the
                 funds. The funds are available on a no-load basis (i.e.,
                 there are no sales commissions or 12b-1 fees). However, each
                 fund bears its share of the Group's distribution costs.
- ------------------------------------------------------------------------------
INVESTMENT ADVISER
VANGUARD MANAGES THE TRUST ON AN AT-COST BASIS
                 The six Portfolios of the Trust receive all investment
                 advisory services on an at-cost basis from Vanguard's Core
                 Management Group. The Core Management Group also provides
                 investment advisory services to several other Vanguard Funds,
                 including Vanguard International Equity Index Fund, Vanguard
                 Institutional Index Fund, Vanguard Balanced Index Fund,
                 Vanguard Variable Insurance Fund -- Equity Index Portfolio,
                 and a portion of Vanguard/Windsor II, as well as to several
                 indexed separate accounts. Total assets under management by
                 the Core Management Group were $16.4 billion as of December
                 31, 1993. The Trust is not actively managed, but is instead
                 administered by the Core Management Group using computerized,
                 quantitative techniques. The Core Management Group is
                 supervised by the Officers of the Trust.
 
                 In placing portfolio transactions, the 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 determina-
                 tions. 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 Trust.
- ------------------------------------------------------------------------------
PERFORMANCE RECORD
                 The tables in this section provide investment results for the
                 500, Extended Market and Small Capitalization Stock
                 Portfolios of the Trust for several periods throughout the
                 Trust's lifetime. The results shown represent "total return"
                 investment performance, which assumes the reinvestment of all
                 capital gains and income dividends for the indicated periods.
                 Also included is comparative information with respect to the
                 unmanaged S&P 500 Composite Stock Price Index, the Wilshire
                 4500 Index and the Russell 2000 Index. The results for the
                 Portfolios are net of all expenses while the results of the
                 stock indexes are hypothetical and make no allowances for the
                 costs of investing. The tables do not make any allowance for
                 federal, state or local income taxes, which shareholders must
                 pay on a current basis. The Total Stock Market, Value and
                 Growth Portfolios were introduced in 1992, and so long-term
                 investment results are not yet available.
 
                 The results shown should not be considered a representation
                 of the total return from an investment made in the Trust
                 today. The periods shown were generally favorable ones for
<PAGE>
                 stock market investing. This information is provided to help
                 investors better understand the Trust and may not provide a
                 basis for comparison with other investments or mutual funds
                 which use a different method to calculate performance.
<TABLE>
<CAPTION>
                                                                                    AVERAGE ANNUAL TOTAL RETURN FOR
                                                                                  VANGUARD INDEX TRUST--500 PORTFOLIO
                                                                             ----------------------------------------------
                                                  FISCAL PERIODS                      500                     S&P 500
                                                  ENDED 12/31/93                   PORTFOLIO*                  INDEX
                                         --------------------------------            ------             -------------------
                                         <S>                                 <C>                        <C>
                                         1 Year                                      + 9.9%                   +10.1%
                                         5 Years                                     +14.3                    +14.5
                                         10 Years                                    +14.6                    +14.9
                                         Lifetime**                                  +13.3                    +13.7
<FN>
                                          *Exclusive of $10 annual account maintenance fee.
                                         **August 31, 1976 to December 31, 1993.
 
</TABLE>
<TABLE>
<CAPTION>
 
                                                                                    AVERAGE ANNUAL TOTAL RETURN FOR
                                                                                         VANGUARD INDEX TRUST--
                                                                                       EXTENDED MARKET PORTFOLIO
                                                                             ----------------------------------------------
                                                                                    EXTENDED                 WILSHIRE
                                                  FISCAL PERIODS                     MARKET                    4500
                                                  ENDED 12/31/93                   PORTFOLIO*                  INDEX
                                         --------------------------------    ----------------------     -------------------
                                         <S>                                 <C>                        <C>
                                         1 Year                                      +13.3%                   +14.6%
                                         5 Years                                     +14.3                    +14.5
                                         Lifetime**                                  +14.9                    +15.5
<FN>
                                          *Includes 1% portfolio transaction fee but exclusive of $10 annual account
                                           maintenance fee.
                                         **December 21, 1987 to December 31, 1993.
 
</TABLE> 
<PAGE>
<TABLE>
<CAPTION>
                                                                                    AVERAGE ANNUAL TOTAL RETURN FOR
                                                                                         VANGUARD INDEX TRUST--
                                                                                 SMALL CAPITALIZATION STOCK PORTFOLIO+
                                                                             ----------------------------------------------
                                                                                     SMALL                    RUSSELL
                                                  FISCAL PERIODS                 CAPITALIZATION                2000
                                                  ENDED 9/30/93                 STOCK PORTFOLIO*               INDEX
                                         --------------------------------    ----------------------     -------------------
                                         <S>                                 <C>                        <C>
                                         1 Year                                      +30.3%                   +33.2%
                                         3 Years                                     +27.6                    +28.1
                                         Since September 11, 1989                    +10.3                      N/A
<FN>
                                         *Includes 1% portfolio transaction fee but exclusive of $10 annual account
                                          maintenance fee.
 
                                         +Formerly Vanguard Small Capitalization Stock Fund, Inc.
</TABLE>
- ------------------------------------------------------------------------------
<PAGE>
DIVIDENDS, CAPITAL GAINS AND TAXES
FOUR PORTFOLIOS PAY QUARTERLY DIVIDENDS; TWO PORTFOLIOS PAY DIVIDENDS ONCE A
YEAR
                 The Trust distributes substantially all of 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. A Portfolio's
                 dividend and capital gains distributions are automatically
                 reinvested in additional shares. Each Portfolio of the Trust
                 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.
 
                 If you utilize a Portfolio of the Trust as a investment
                 option in an employer-sponsored retirement savings plan,
                 dividend and capital gains distributions from the Portfolio
                 ordinarily will not be subject to current taxation, but will
                 accumulate on a tax-deferred basis. In general, employer-
                 sponsored retirement and savings plans are governed by
                 complex tax rules. If you participate in such a plan, consult
                 your plan administrator, your plan's Summary Plan
                 Description, or a professional tax adviser regarding the tax
                 consequences of your participation in the plan and of any
                 plan contributions or withdrawals.
- ------------------------------------------------------------------------------
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 by the Portfolio. 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, 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, 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. Securities for which no current
                 quotations are readily available are valued at fair market
                 value as determined in good faith by the 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 Portfolio's share price can be found daily in the mutual
                 fund listings of most major newspapers under the heading of
                 The Vanguard Group.
- ------------------------------------------------------------------------------
<PAGE>
GENERAL INFORMATION
                 The 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 are fully paid and non-assessable;
                 have no preference as to conversion, exchange, dividends,
                 retirement or other features; and have no pre-emptive rights.
                 Such shares have non-cumulative voting rights, meaning that
                 the holders of more than 50% of the shares voting for the
                 election of Trustees can elect 100% of the 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 Trustee or Trustees of the Trust if requested in
                 writing by the holders of not less than 10% of the
                 outstanding shares of the Trust.

                 All securities and cash for the 500, Extended Market, Total
                 Stock Market and Small Capitalization Stock Portfolios are
                 held by State Street Bank and Trust Company, Boston, MA. All
                 securities and cash for the Value and Growth Portfolios are
                 held by CoreStates National Bank, Philadelphia, PA. The
                 Vanguard Group, Inc., Valley Forge, PA, serves as the Trust's
                 Transfer and Dividend Disbursing Agent. Price Waterhouse
                 serves as independent accountants for the Trust and will
                 audit its financial statements annually. The Trust is not
                 involved in any litigation.
- ------------------------------------------------------------------------------
<PAGE>
                                SERVICE GUIDE

PARTICIPATING IN YOUR PLAN
                 One or more Portfolios of the Trust are available as
                 investment options in your retirement or savings plan. The
                 administrator of your plan or your employee benefits office
                 can provide you with detailed information on how to
                 participate in your plan and how to elect a Portfolio of the
                 Trust as an investment option.
 
                 If you have any questions about a Portfolio, including the
                 Portfolio's investment objective, policies, risk
                 characteristics or historical performance, please contact
                 Participant Services at 1-800-523-1188.
 
                 If you have questions about your account, contact your plan
                 administrator or the organization which provides
                 recordkeeping services for your plan.
                 -------------------------------------------------------------
INVESTMENT OPTIONS AND ALLOCATIONS
                 You may be permitted to elect different investment options,
                 alter the amounts contributed to your plan, or change how
                 contributions are allocated among your investment options in
                 accordance with your plan's specific provisions. See your
                 plan administrator or employee benefits office for more
                 details.
                 -------------------------------------------------------------
TRANSACTIONS IN FUND SHARES
                 Contributions, exchanges or redemptions of a Portfolio's
                 shares are effective when received in "good order" by
                 Vanguard. "Good order" means that complete information on the
                 contribution, exchange or redemption and the appropriate
                 monies have been received by Vanguard.
                 -------------------------------------------------------------
MAKING EXCHANGES
                 Your plan may allow you to exchange monies from one
                 investment option to another. Check with your plan
                 administrator for details on the rules governing exchanges in
                 your plan. Certain investment options, particularly company
                 stock or investment contracts, may be subject to unique
                 restrictions.
 
                 Before making an exchange, you should consider the following:
 
                 * If you are making an exchange to another Vanguard Fund
                   option, please read the Fund's prospectus. Contact
                   Participant Services at 1-800-523-1188 for a copy.
 
                 * Exchanges are accepted by Vanguard only as permitted by
                   your plan. Your plan administrator can explain how
                   frequently exchanges are allowed.
- ------------------------------------------------------------------------------
 
<PAGE>
                    (This page intentionally left blank.)
 
 
<PAGE>
 
                                    PART B
                             VANGUARD INDEX TRUST
 
                     STATEMENT OF ADDITIONAL INFORMATION
                                APRIL 4, 1994
  This Statement is not a prospectus but should be read in conjunction with
the Trust's current Prospectus (dated April 4, 1994). To obtain the Prospectus
please call:
 
                     VANGUARD INVESTOR INFORMATION CENTER
                                1-800-662-7447
 
Table of Contents                                                         Page
Investment Objectives and Policies.....................................      1
Investment Limitations.................................................      4
Purchase of Shares.....................................................      6
Redemption of Shares...................................................      6
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
 
                      INVESTMENT OBJECTIVE 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.
 
<PAGE>
 
  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 reduce the required margin, resulting in a repayment of
excess margin to the contract holder. Variation margin
<PAGE>
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 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.
<PAGE>
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.
 
                            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
      <PAGE>
      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.);
  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.
 
<PAGE>
 
                              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
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.
 
<PAGE>
 
                            YIELD AND TOTAL RETURN
 
  The yield of the 500 Portfolio of the Trust for the 30 day period ended
December 31, 1993 was 2.55%. The yield of the Extended Market Portfolio** of
the Trust for the 30 day period ended December 31, 1993 was 1.34%. The yield
of the Total Stock Market Portfolio*** of the Trust for the 30 day period
ended December 31, 1993 was 2.21%. The yield of the Value Portfolio for the 30
day period ended December 31, 1993 was 3.06%. The yield of the Growth
Portfolio for the 30 day period ended December 31, 1993 was 1.96%. The yield
of the Small Capitalization Stock Portfolio** for the 30 day period ended
December 31, 1993 was 1.15%.
  The average annual total return of the 500 Portfolio for the one, five and
ten year periods ended December 31, 1993 was +9.84%, +14.27% and +14.56%,
respectively. The average annual total return for the Extended Market
Portfolio for the one and five year periods ended December 31, 1993 and since
the Portfolio's inception on December 21, 1987 was +13.30%, +13.98%  and
+14.81%, respectively. The total return of the Total Stock Market Portfolio
for the period April 27, 1992 (end of subscription period) to December 31,
1993 was 12.43%. The average annual return of the Value and Growth Portfolios
from November 2, 1992 to December 31, 1993 was 19.23% and 3.99%, respectively.
The average annual return of the Small Capitalization Stock Portfolio for the
one, five and ten year periods ended December 31, 1993 was +17.45%, +12.71%
and +6.84%, 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 for the 500 Portfolio 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.
 
<PAGE>
 
 
                           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.
<TABLE>
<C>                                                                <C>  
JOHN C. BOGLE, Chairman, Chief Executive Officer and               ALFRED M. RANKIN, Trustee
Trustee*                                                             President, Chief Executive Officer and Director of NACCO
  Chairman, Chief Executive Officer, and Director of The             Industries, Inc.; Director of The BFGoodrich Company, The
  Vanguard Group, Inc., and of each of the investment                Standard Products Company and The Reliance Electric
  companies in The Vanguard Group. Director of The Mead              Company.
  Corporation and General Accident Insurance.                      JOHN C. SAWHILL, Trustee
JOHN J. BRENNAN, President & Trustee*                                President and Chief Executive Officer, The Nature
  President and Director of The Vanguard Group, Inc. and of          Conservancy; formerly, Director and Senior Partner,
  each of the investment companies in The Vanguard Group.            McKinsey & Co.; President, New York University; Director
ROBERT E. CAWTHORN, Trustee                                          of Pacific Gas and Electric Company and NACCO Industries.
  Chairman and Chief Executive Officer, Rhone-Poulenc Rorer,       JAMES O. WELCH, JR., Trustee
  Inc.; Director of Immune Response Corp. and Sun Company,           Retired Chairman of Nabisco Brands, Inc. retired Vice
  Inc.; Trustee, Universal Health Realty Income Trust.               Chairman and Director of RJR Nabisco; Director of TECO
BARBARA BARNES HAUPTFUHRER, Trustee                                  Energy, Inc.
  Director of The Great Atlantic and Pacific Tea Company,          J. LAWRENCE WILSON, Trustee
  Alco Standard Corp., Raytheon Company, Knight-Ridder Inc.,         Chairman and Director of Rohm & Haas Company; Director of
  and Massachusetts Mutual Life Insurance Co.                        Cummins Engine Company and Vanderbilt University; Trustee
BRUCE K. MACLAURY, Trustee                                           of the Culver Educational Foundation.
  President, The Brookings Institution; Director of Dayton         RAYMOND J. KLAPINSKY, Secretary*
  Hudson Corporation, American Express Bank, Ltd., and The           Senior Vice President and Secretary of The Vanguard Group,
  St. Paul Companies, Inc.                                           Inc.; Secretary of each of the investment companies in The
BURTON G. MALKIEL, Trustee                                           Vanguard Group.
  Chemical Bank Chairmen's Professor of Economics, Princeton       RICHARD F. HYLAND, Treasurer*
  University; Director of Prudential Insurance Co. of                Treasurer of The Vanguard Group, Inc. and of each of the
  America, Amdahl Corporation, Baker Fentress & Co., Jeffrey         investment companies in The Vanguard Group.
  Co., and The Southern New England Telephone Company.             KAREN E. WEST, Controller*
                                                                     Vice President of The Vanguard Group, Inc.; Controller of
                                                                     each of the investment companies in The Vanguard Group.
<FN> 
- ---------
*Officers of the Trust are "interested persons" as defined in the Investment Company Act of 1940.
</TABLE> 
 
THE VANGUARD GROUP, INC.
 
  Vanguard Index Trust is a member of the Vanguard Group of Investment
companies which consists of 32 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
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
<PAGE>
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, the Trust had
contributed capital of $1,590,000* to Vanguard, representing 7.9% 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, 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*.
  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 spend 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, the Trust paid approximately $2,327,000* 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 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
<PAGE>
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 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
<PAGE>
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.

MORGAN STANLEY CAPITAL INTERNATIONAL EAFE INDEX -- is an arithmetic, market
value-weighted average of the performance of over 900 securities listed on the
stock exchanges of countries in Europe, Australia and the Far East.

GOLDMAN SACHS 100 CONVERTIBLE BOND INDEX -- currently includes 67 bonds and 33
preferreds. The original list of names was generated by screening for
convertible issues of 100 million or greater in market capitalization. The
index is priced monthly.

SALOMON BROTHERS GNMA INDEX -- includes pools of mortgages originated by
private lenders and guaranteed by the mortgage pools of the Government
National Mortgage Association.

SALOMON BROTHERS HIGH-GRADE CORPORATE BOND INDEX -- consists of publicly
issued, non-convertible corporate bonds rated AA or AAA. It is a value-
weighted, total return index, including approximately 800 issues with
maturities of 12 years or greater.

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.
 
<PAGE>
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,
independent accountants, also appearing therein, are incorporated by reference
in this Statement of Additional Information. The Trust's 1993 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, independent
accountants, also appearing therein, are incorporated by reference in this
Statement of Additional Information.




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