VANGUARD ASSET ALLOCATION FUND INC
485BPOS, 1997-01-10
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                      SECURITIES AND EXCHANGE COMMISSION 
                            Washington, D.C. 20549 

                                  FORM N-1A 

   
                 REGISTRATION STATEMENT (NO. 33-23444) UNDER 
                          THE SECURITIES ACT OF 1933 
                        PRE-EFFECTIVE AMENDMENT NO. 
                                                                           [X] 
                       POST-EFFECTIVE AMENDMENT NO. 11 
                                                                           [X] 
                                     AND 
             REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY 
                                 ACT OF 1940 
                               AMENDMENT NO. 14 
                                                                           [X] 

                     VANGUARD ASSET ALLOCATION FUND, INC. 
              (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER) 
                    P.O. BOX 2600, VALLEY FORGE, PA 19482 
                   (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE) 
                 REGISTRANT'S TELEPHONE NUMBER (610) 669-1000 
                        RAYMOND J. KLAPINSKY, ESQUIRE 
                                 P.O. BOX 876 
                            VALLEY FORGE, PA 19482 

                 It is proposed that this filing become effective 
                    pursuant to paragraph (b) of Rule 485 
 (acceleration of the effective date to January 17, 1997 has been requested). 
    

                  Approximate Date of Proposed Public Offering: 
 As soon as practicable after this Registration Statement becomes effective. 

   
   Registrant elects to register an indefinite number of shares pursuant to 
Regulation 24f-2 under the Investment Company Act of 1940. Registrant filed 
its Rule 24(f )(2) for the year ended September 30, 1996, on November 27, 
1996. 
    
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<PAGE>

                     VANGUARD ASSET ALLOCATION FUND, INC. 
                            CROSS REFERENCE SHEET 

<TABLE>
<CAPTION>
 Form N-1A 
Item Number                                                       Location in Prospectus 
<S>       <C>                                                     <C>
 Item 1.  Cover Page..........................................    Cover Page 
 Item 2.  Synopsis............................................    Not Applicable 
 Item 3.  Condensed Financial Information.....................    Financial Highlights; Performance Record 
 Item 4.  General Description.................................    Investment Objective; Investment Policies, 
                                                                  Investment Risks; Investment Limitations; 
                                                                  General Information
 Item 5.  Management of the Fund..............................    Management of the Fund; Investment 
                                                                  Adviser
 Item 6.  Capital Stock and Other Securities..................    Opening an Account and Purchasing Shares;
                                                                  Selling Your Shares; The Fund's Share Price;
                                                                  Dividends, Capital Gains and Taxes; General
                                                                  Information
 Item 7.  Purchase of Securities Being Offered................    Cover Page; Opening an Account and
                                                                  Purchasing Shares
 Item 8.  Redemption or Repurchase............................    Selling Your Shares 
 Item 9.  Pending Legal Proceedings...........................    Not Applicable 
Form N-1A                                                         Location in Statement 
Item Number                                                       of Additional Information 
 Item 10. Cover Page..........................................    Cover Page 
 Item 11. Table of Contents...................................    Cover Page 
 Item 12. General Information and History.....................    Management of the Fund
 Item 13. Investment Objective and Policies...................    Investment Limitations; Description of U.S.
                                                                  Government Securities; Description of
                                                                  Repurchase Agreements; Futures Contracts
 Item 14.  Management of the Fund ............................    Management of the Fund
 Item 15.  Control Persons and Principal Holders of 
           Securities.........................................    Management of the Fund
 Item 16.  Investment Advisory and Other Services.............    Management of the Fund; Investment 
                                                                  Advisory Services
 Item 17.  Brokerage Allocation ..............................    Not Applicable 
 Item 18.  Capital Stock and Other Securities ................    General Information 
 Item 19.  Purchase, Redemption and Pricing of 
           Securities Being Offered...........................    Purchase of Shares; Redemption of Shares
 Item 20.  Tax Status.........................................    Not Applicable 
 Item 21.  Underwriters.......................................    Not Applicable 
 Item 22.  Calculations of Yield Quotations of Money
           Market Fund........................................    Not Applicable 
 Item 23.  Financial Statements...............................    Financial Statements 
</TABLE>

<PAGE>

===============================================================================

                                                A Member of The Vanguard Group 
===============================================================================
   
PROSPECTUS -- January 17, 1997 
    
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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          Vanguard Asset Allocation Fund, Inc. (the "Fund") is an
OBJECTIVE &         open-end diversified investment company that seeks to
POLICIES            maximize total return (i.e., capital change plus income).
                    The Fund invests in common stocks, bonds and money market
                    instruments in proportions consistent with their expected
                    returns and risks as evaluated by the Fund's adviser. The
                    Fund should not be considered a complete investment program.
                    There is no assurance that the Fund will achieve its stated
                    objective. Shares of the Fund are neither insured nor
                    guaranteed by any agency of the U.S. Government, including
                    the FDIC.
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OPENING AN          To open a regular (non-retirement) account, please complete
ACCOUNT             and return the Account Registration Form. If you need
                    assistance in completing this Form, please call our Investor
                    Information Department. To open an Individual Retirement
                    Account (IRA), please use a Vanguard IRA Adoption Agreement.
                    To obtain a copy of this form, call 1-800-662-7447, Monday
                    through Friday from 8:00 a.m. to 9:00 p.m. and Saturday,
                    from 9:00 a.m. to 4:00 p.m. (Eastern time). The minimum
                    initial investment is $3,000 or $1,000 for Uniform
                    Gifts/Transfers to Minors Act accounts. The Fund is offered
                    on a no-load basis (i.e., there are no sales commissions or
                    12b-1 fees). However, the Fund incurs expenses for
                    investment advisory, management, administrative and
                    distribution services.
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ABOUT THIS          This Prospectus is designed to set forth concisely the
PROSPECTUS          information you should know about the Fund before you
                    invest. It should be retained for future reference. A
                    "Statement of Additional Information" containing additional
                    information about the Fund has been filed with the
                    Securities and Exchange Commission. Such Statement is dated
                    January 17, 1997 and has been incorporated by reference into
                    this Prospectus. A copy may be obtained without charge by
                    writing to the Fund or by calling the Investor Information
                    Department.
    
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TABLE OF CONTENTS 
   
<TABLE>
<CAPTION>
                                     Page                                          Page                                    Page
<S>                                   <C>  <S>                                     <C>     <S>                              <C>
Fund Expenses.......................  2    Implementation of Policies .............  7          SHAREHOLDER GUIDE
Financial Highlights................  2    Investment Limitations .................  9     Opening an Account and
Yield and Total Return..............  3    Management of the Fund .................  9       Purchasing Shares.............  15
        FUND INFORMATION                   Investment Adviser ..................... 10     When Your Account Will Be
Investment Objective................  4    Performance Record ..................... 11        Credited.....................  18
Investment Policies.................  4    Dividends, Capital Gains and                    Selling Your Shares.............  18 
Investment Risks ...................  5      Taxes................................. 12     Exchanging Your Shares .........  20
Who Should Invest ..................  6    The Share Price of the Fund............. 13     Important Information About
                                           General Information .................... 14       Telephone Transactions........  22
                                                                                           Transferring Registration ......  23
                                                                                           Other Vanguard Services ........  23 
</TABLE>
    
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THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE COMMISSION PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
- ------------------------------------------------------------------------------

<PAGE>
   
FUND EXPENSES       The following table illustrates all expenses and fees that
                    you would incur as a shareholder of the Fund. The expenses
                    and fees set forth in the table are for the 1996 fiscal
                    year.

                                 Shareholder Transaction Expenses 
                    ------------------------------------------------------------
                    Sales Load Imposed on Purchases  ..............        None 
                    Sales Load Imposed on Reinvested Dividends  ...        None 
                    Redemption Fees  ..............................        None 
                    Exchange Fees  ................................        None 

                             Annual Fund Operating Expenses 
                    ------------------------------------------------------------
                    Management & Administrative Expenses                  0.32% 
                    Investment Advisory Fees  ...........                 0.11 
                    12b-1 Fees  .........................    None 
                    Other Expenses 
                    Distribution Costs  .................     0.02% 
                    Miscellaneous Expenses  .............     0.02 
                                                            ------ 
                    Total Other Expenses  ...............                 0.04 
                                                                       ------- 
                    Total Operating Expenses  .......                     0.47% 
                                                                       =======

                    The purpose of this table is to assist you in understanding
                    the various costs and expenses that you would bear directly
                    or indirectly as an investor in the Fund.

                    The following example illustrates the expenses that you
                    would incur on a $1,000 investment over various periods,
                    assuming (1) a 5% annual rate of return and (2) redemption
                    at the end of each period. As noted in the table above, the
                    Fund charges no redemption fees of any kind.

                    1 Year         3 Years          5 Years          10 Years 
                    ------         -------          -------          --------
                     $5              $15              $26             $59 

                    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           The following financial highlights information, for a share
HIGHLIGHTS          outstanding throughout each period, insofar as it relates to
                    each of the five years in the period ended September 30,
                    1996, has been audited by Price Waterhouse LLP, independent
                    accountants, whose report thereon was unqualified. This
                    information should be read in conjunction with the financial
                    statements and notes thereto, which, together with the
                    remaining portions of the Fund's 1996 Annual Report to
                    Shareholders, are incorporated by reference in the Statement
                    of Additional Information and this Prospectus, and which
                    appear, along with the report of Price Waterhouse LLP, in
                    the Fund's 1996 Annual Report to Shareholders. For a more
                    complete discussion of the Fund's performance, please see
                    the Fund's 1996 Annual Report to Shareholders, which may be
                    obtained without charge by writing to the Fund or by calling
                    our Investor Information Department at 1-800-662-7447.
    
2
<PAGE>

   
<TABLE>
<CAPTION>
                                                                  Year Ended September 30,                              
                                        ----------------------------------------------------------------------- Nov. 3, 1988+ to 
                                          1996     1995      1994      1993      1992      1991      1990       Sept. 30, 1989 
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                    <C>         <C>       <C>       <C>       <C>       <C>        <C>           <C>
Net Asset Value, Beginning of Period     $17.03    $13.78    $15.08    $13.79    $13.06    $10.93     $12.11        $10.00 
                                         ------    ------    ------    ------    ------    ------     ------        ------
Investment Operations 
   Net Investment Income ............       .69       .64       .52       .54       .61       .60        .60           .46 
   Net Realized and Unrealized Gain 
     (Loss) on Investments  .........      1.82      3.18      (.81)     1.51       .90       2.28     (1.12)         1.90 
                                         ------    ------    ------    ------    ------     ------    ------        ------
    Total from Investment 
    Operations                             2.51      3.82      (.29)     2.05      1.51       2.88      (.52)         2.36 
- -----------------------------------------------------------------------------------------------------------------------------------
Distributions 
   Dividends from Net Investment 
     Income  ........................      (.66)     (.57)     (.48)     (.59)     (.59)      (.62)     (.51)         (.25) 
   Distributions from Realized 
     Capital Gains  .................      (.61)       --      (.53)     (.17)     (.19)      (.13)     (.15)           -- 
                                         ------    ------    ------    ------    ------     ------    ------        ------
    Total Distributions .............     (1.27)     (.57)    (1.01)     (.76)     (.78)      (.75)     (.66)         (.25) 
- -----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period  .....    $18.27    $17.03    $13.78    $15.08    $13.79     $13.06    $10.93        $12.11 
===================================================================================================================================
Total Return  .......................    15.27%     28.57%    (2.05)%   15.41%    12.16%     27.32%    (4.57)%       23.93% 
===================================================================================================================================
Ratios/Supplemental Data 
Net Assets, End of Period (Millions)    $2,341     $1,593    $1,120    $1,003    $  502     $  265    $  160         $ 107 
Ratio of Expenses to Average Net 
   Assets ...........................     0.47%     0.49%      0.50%     0.49%     0.52%      0.44%     0.50%         0.49%* 
Ratio of Net Investment Income to 
   Average Net Assets ...............     4.17%     4.41%      3.68%     4.07%     4.95%      5.28%     5.53%         5.53%* 
Portfolio Turnover Rate  ............       47%       34%        51%       31%       18%        44%       12%           52% 
Average Commission Rate Paid  .......   $.0160       N/A        N/A       N/A       N/A        N/A       N/A           N/A 
</TABLE>
    
* Annualized. 
+Commencement of operations. 
- -------------------------------------------------------------------------------
YIELD AND TOTAL     From time to time the Fund may advertise its yield and total
RETURN              return. Both yield and total return figures are based on
                    historical earnings and are not intended to indicate future
                    performance. The "total return" of the Fund refers to the
                    average annual compounded rates of return over one-, five-
                    and ten-year periods or for the life of the Fund (which
                    periods will be stated in the advertisement) that would
                    equate an initial amount invested at the beginning of a
                    stated period to the ending redeemable value of the
                    investment, assuming the reinvestment of all dividend and
                    capital gains distributions.

                    In accordance with industry guidelines set forth by the U.S.
                    Securities and Exchange Commission, the "30-day yield" of
                    the Fund 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 the Fund'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 the net investment income earned over thirty
                    days is compounded monthly for six months and then
                    annualized. Methods used to calculate advertised yields are
                    standardized for all stock and bond mutual funds. However,
                    these methods differ from the accounting methods used by the
                    Fund to maintain its books and records, and so the
                    advertised thirty-day yield may not fully reflect the income
                    paid to an investor's account. Additionally, the Fund may
                    compare its performance to that of the Standard & Poor's 500
                    Composite Stock Price Index.
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                                                                              3

<PAGE>

INVESTMENT          The objective of the Fund is to maximize total return 
OBJECTIVE           (i.e., capital change plus income) while exhibiting less 
                    investment risk than a portfolio consisting entirely of 
The Fund seeks to   common stocks. There is no assurance that the Fund will 
maximize total      achieve its stated objective.
return
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INVESTMENT 
POLICIES

The Fund invests   The Fund will allocate its assets among a common stock
in stocks, bonds   portfolio, a bond portfolio, and money market instruments.
and money market   The Fund's adviser, Mellon Capital Management, allocates the
instruments in     Fund's assets among stocks, bonds and money market
varying            instruments in proportions which reflect the anticipated
proportions        returns and risks of each asset class. The estimates of
                   return and risk are developed based upon the adviser's
                   disciplined valuation methodology. There are no limitations
                   on the amount of the Fund's assets which may be allocated to
                   each of the three asset classes (stocks, bonds and money
                   market instruments). The Fund is managed without regard to
                   tax ramifications.

                   In estimating the relative attractiveness of each asset
                   class, the adviser takes into account various factors. Common
                   stocks are evaluated using a "dividend- discount" model. This
                   model provides an estimate of the expected return of the
                   Standard & Poor's 500 Composite Stock Price Index (the "S&P
                   500 Index") based upon earnings forecasts for companies whose
                   stocks are included in the S&P 500 Index. The expected bond
                   return is the current yield-to-maturity of long-term U.S.
                   Treasury bonds, while the return on money market instruments
                   reflects the current yield on three-month U.S. Treasury bills
                   and long-term inflation forecasts.

                   Once expected return and volatility (risk) estimates are
                   developed for each asset class, the adviser attempts to
                   identify apparent imbalances in the relative pricing of
                   common stocks, bonds and money market instruments, using a
                   computer model. Implicit in the adviser's approach is the
                   belief that such short-term imbalances occur periodically but
                   tend to be corrected fairly quickly. The Fund's allocation
                   among the three asset classes is then structured to take
                   advantage of these perceived imbalances. 

                   To implement a particular allocation strategy, the Fund may
                   invest in the following securities: a diversified portfolio
                   of common stocks selected by the adviser to parallel the
                   performance of the S&P 500 Index; long-term U.S. Treasury
                   bonds with maturities generally in excess of 20 years; and
                   selected money market instruments, including repurchase
                   agreements. The Fund may also invest in futures contracts on
                   stock indexes and bonds. See "Implementation of Policies" for
                   a description of the securities in which the Fund invests and
                   other investment practices of the Fund.

                   The Fund is responsible for voting the shares of all
                   securities it holds.

                   The investment objective and policies of the Fund are not
                   fundamental and so may be changed by the Board of Directors
                   without shareholder approval. However, shareholders would be
                   notified prior to a material change in either.
- -------------------------------------------------------------------------------
4
<PAGE>
INVESTMENT RISKS   Depending on the adviser's allocation of the Fund's assets
The Fund is        among stocks, bonds and cash reserves, investors in the Fund
subject to stock   may be exposed to the market risk of common stocks and bonds.
and bond market    
risk               Stock market risk is the possibility that stock prices in
                   general will decline over short or even extended periods. The
                   stock market tends to be cyclical, with periods when stock
                   prices generally rise and periods when stock prices generally
                   decline. To illustrate the volatility of domestic stock
                   prices, the following table sets forth the extremes for U.S.
                   stock market returns as well as the average return for the
                   period from 1926 to 1995, as measured by the Standard &
                   Poor's 500 Composite Stock Price Index:

                        AVERAGE ANNUAL U.S. STOCK MARKET RETURNS (1926-1995) 
                                     OVER VARIOUS TIME HORIZONS 

                                1 Year        5 Years      10 Years    20 Years 
                                ------        -------      --------    --------
                   Best         +53.9%        +23.9%        +20.1%      +16.9% 
                   Worst        -43.3         -12.5          -0.9        +3.1 
                   Average      +12.5         +10.3         +10.7       +10.7 

   
                   As shown, from 1926 to 1995, U.S. common stocks as measured
                   by the Index provided an average annual total return (capital
                   appreciation plus dividend income) for 10 years, of +10.7%.
                   Average return may not be useful for forecasting future
                   returns in any particular period, as stock returns are quite
                   volatile from year to year.
    
                   Bond market risk is the potential for fluctuations in the
                   market value of bonds. Bond prices vary inversely with
                   changes in the level of interest rates. When interest rates
                   rise, the prices of bonds fall; conversely, when interest
                   rates fall, bond prices rise. While bonds normally fluctuate
                   less in price than stocks, there have been extended periods
                   of cyclical increases in interest rates that have caused
                   significant declines in bond prices. For example, long-term
                   bond prices fell 48% from December 1976 to September 1981.
                   The risk of bonds declining in value, however, may be offset
                   in whole or in part by the higher level of income that bonds
                   provide.

                   While the Fund invests in stocks, bonds and money market
                   instruments in varying proportions, investors should not
                   construe the Fund as a balanced investment program offering
                   relatively stable allocations among these asset classes.
                   Because the allocation strategy of the adviser may, at
                   certain times, result in a portfolio with a primary emphasis
                   on common stocks, the Fund may from time to time exhibit a
                   level of volatility which is more consistent with a common
                   stock portfolio than a balanced portfolio. However, under
                   normal circumstances, the volatility of the Fund's total
                   return is expected to be less than that of a common stock
                   portfolio, as represented, for example, by the S&P 500 Index.

                                                                              5
<PAGE>
The adviser may    Investors should also be aware that the investment results of
fail to            the Fund depend upon the adviser's ability to anticipate
anticipate market  correctly the relative performance and risk of stocks, bonds
advances or        and money market instruments. Historical evidence indicates
declines           that correctly timing portfolio allocations among these asset
                   classes has been an extremely difficult strategy to implement
                   successfully. While the adviser has substantial experience in
                   asset allocation, there can be no assurance that the adviser
                   will correctly anticipate relative asset class performance in
                   the future on a consistent basis. The Fund's short-term
                   investment results would suffer, for example, if only a small
                   portion of the Fund's assets were allocated to stocks during
                   a significant stock market advance, or if a major portion of
                   its assets were allocated to stocks during a market decline.
                   Similarly, the Fund's short-term investment results would
                   also suffer if the Fund were substantially invested in bonds
                   at a time when interest rates increased.


WHO SHOULD         The Fund is designed for investors seeking maximum total
INVEST             return through an investment vehicle which provides an
                   actively managed mix of stocks, bonds and money market
Long-term          instruments. Because the Fund can and may have a large
investors          percentage of its portfolio invested in common stocks,
seeking            investors in the Fund should be willing to accept the risk of
maximum total      an all-stock portfolio, including the potential for sudden,
return             sometimes substantial declines in market value.

                   Due to the risks associated with common stock and bond
                   investments, the Fund is intended to be a long-term
                   investment vehicle and is not designed to provide investors
                   with a means of speculating on short-term stock and bond
                   market movements. Investors who engage in excessive account
                   activity generate additional costs which are borne by all of
                   the Fund's shareholders. In order to minimize such costs the
                   Fund has adopted the following policies. The Fund reserves
                   the right to reject any purchase request (including exchange
                   purchases from other Vanguard portfolios) that is reasonably
                   deemed to be disruptive to efficient portfolio management,
                   either because of the timing of the investment or previous
                   excessive trading by the investor. Additionally, the Fund has
                   adopted exchange privilege limitations as described in the
                   section "Exchange Privilege Limitations." Finally, the Fund
                   reserves the right to suspend the offering of its shares.

                   No assurance can be given that the Fund will achieve its
                   objective or that shareholders will be protected from the
                   risk of loss that is inherent in equity investing. Also,
                   there can be no guarantee that the adviser will correctly
                   anticipate fluctuations in the stock and bond markets in its
                   effort to maximize total return while minimizing risk.

                   The Fund should be considered part of a well-rounded
                   investment program and not its sole component. Investors may
                   wish to reduce the potential risk of investing in the Fund by
                   purchasing shares on a regular, periodic basis (dollar-cost
                   averaging) rather than making an investment in one lump sum.
- -------------------------------------------------------------------------------
6

<PAGE>
IMPLEMENTATION     In an effort to maximize its total investment return, the
OF                 Fund utilizes a number of investment practices.
POLICIES 

The Fund may       The Fund invests in stocks, bonds and money market
invest in stocks,  instruments in varying proportions. For common stocks, the
bonds and          Fund will invest in a diversified portfolio of common stocks
money market       selected to parallel the investment performance of the S&P
instruments        500 Index. The Fund may also invest in stock index futures
                   and options to a limited extent, as described below.

                   Bond investments for the Fund will consist of long-term U.S.
                   Treasury bonds (those with maturities generally in excess of
                   20 years) and, as described below, futures contracts and
                   options on such bonds. As part of its bond portfolio, the
                   Fund may also invest in other long-term "full faith and
                   credit" obligations of the U.S. Government.

                   The money market instruments held by the Fund will have an
                   average weighted maturity of less than 90 days. Money market
                   instruments may include obligations of the United States
                   Government and its agencies and instrumentalities; commercial
                   paper, bank certificates of deposit, and bankers'
                   acceptances; and repurchase agreements collateralized by
                   these securities.

                   A repurchase agreement is a means of investing monies for a
                   short period. In a repurchase agreement, a seller -- a U.S.
                   commercial bank or recognized U.S. securities dealer -- sells
                   securities to the Fund and agrees to repurchase the
                   securities at the Fund's cost plus interest within a
                   specified period (normally one day). In these transactions,
                   the securities purchased by the Fund will have a total value
                   equal to, or in excess of, the value of the repurchase
                   agreement, and will be held by the Fund's Custodian Bank
                   until repurchased.

The Fund may lend  The Fund may lend its investment securities to qualified
its securities     institutional investors for either short-term or long-term
                   purposes of realizing additional income. Loans of securities
                   by the Fund 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.

The Fund may       The Fund may borrow money, subject to the limitations set
borrow money       forth below, for temporary or emergency purposes, including
under unusual      the meeting of redemption requests which might otherwise
circumstances      require selling securities at a loss.

Portfolio turnover Due to the active asset allocation approach employed by the
 may be high       Fund, the Fund's portfolio turnover rate may be high,
                   approximately 100% per year. A 100% portfolio turnover rate
                   would occur, for example, if all of the Fund's securities
                   were replaced within one year. Further, in order to comply
                   with the "short-short" test of the Internal Revenue Service,
                   it may be necessary for the Fund to modify its investment
                   strategy and refrain from securities sales that it would
                   otherwise make. Under the IRS's "short-short" test, a mutual
                   fund must not receive more than 30% of its gross income from
                   gains realized on securities held for less than 90 days.

                                                                              7
<PAGE>
Derivative         Derivatives are instruments whose values are linked to or
Investing          derived from an underlying security or index. The most common
                   and conventional types of derivative securities are futures
                   and options.

The Fund may use   The Fund may utilize stock and bond futures contracts and
futures contracts  options to a limited extent. Specifically, the Fund may enter
and options        into futures contracts provided that not more than 5% of its
                   assets are required as a futures contract deposit; in
                   addition, the Fund may enter into futures contracts and
                   options only to the extent that obligations under such
                   contracts or transactions represent not more than 50% of the
                   Fund's assets. However, under unusual circumstances, the Fund
                   may maintain futures positions that are equivalent in value
                   to up to 100% of the Fund's assets, so that the Fund may
                   remain effectively fully invested in proportions consistent
                   with the adviser's current asset allocation strategy.

                   Futures contracts and options may be used for several
                   reasons: to reallocate the Fund's assets among stocks, bonds
                   and money market instruments while minimizing transaction
                   costs; to maintain cash reserves while simulating full
                   investment; to facilitate trading; or to seek higher
                   investment returns when a futures contract is priced more
                   attractively than the underlying security or index.

                   For example, in order to reallocate 10% of the Fund's assets
                   from stocks to bonds while minimizing transaction costs, the
                   adviser may sell stock index futures and purchase bond
                   futures. Because the transaction costs of futures contracts
                   and options may be lower than the costs of investing in
                   stocks or bonds directly, it is expected that the use of
                   futures contracts and options may reduce the Fund's total
                   transaction costs. Also, because futures contracts only
                   require a small initial margin deposit, the Fund would then
                   be able to simultaneously maintain a cash reserve for
                   potential redemptions and simulate full investment. In the
                   event of net redemptions from the Fund, sufficient futures
                   contracts would be sold to avoid any leveraging of the Fund's
                   assets.

Futures contracts  The primary risks associated with the use of futures
and options pose   contracts and options are: (i) imperfect correlation between
certain risks      the change in market value of the securities held by the Fund
                   and the prices of futures contracts and options; 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 the
                   Fund's underlying securities. The risk that the Fund will be
                   unable to close out a futures position will be minimized by
                   entering into such transactions on a national exchange with
                   an active and liquid secondary market. While futures
                   contracts and options can be used as leveraged instruments,
                   the Fund may not use futures contracts or options to leverage
                   its net assets.

                   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

8
<PAGE>

                   and substantial loss (or gain) to the investor. When
                   investing in futures contracts, the Fund will segregate cash
                   or other liquid portfolio securities in the amount of the
                   underlying obligation.

INVESTMENT         The Fund has adopted certain in an attempt to reduce its
LIMITATIONS        exposure to specific situations. Some of these limitations
                   are that the Fund will not:

The Fund has       (a) with respect to 75% of the value of its total assets,
adopted certain    purchase the securities of any issuer (except obligations of
fundamental        the United States government and its instrumentalities) if as
limitations        a result the Fund would hold more than 10% of the outstanding
                   voting securities of the issuer, or more than 5% of the value
                   of the Fund's total assets would be invested in the
                   securities of such issuer;

                   (b) invest more than 25% of its assets in any one industry;

                   (c) borrow money except from banks (or through reverse
                   repurchase agreements) for temporary or emergency purposes
                   (not leveraging), and then only in an amount not in excess of
                   15% of the value of the Fund's net assets at the time the
                   borrowing is made. Whenever borrowing exceeds 5% of the value
                   of the Fund's assets, the Fund will not make any additional
                   investments; and 

                   (d) pledge, mortgage or hypothecate any of its assets to an
                   extent greater than 5% of its total assets.

                   These investment limitations are considered at the time
                   investment securities are purchased. The investment
                   limitations described here and in the Statement of Additional
                   Information may be changed only with the approval of a
                   majority of the Fund's shareholders.

- -------------------------------------------------------------------------------
   
MANAGEMENT OF      The Fund is a member of The Vanguard Group of Investment
THE FUND           Companies, a family of more than 30 investment companies with
                   more than 90 distinct investment portfolios and total assets
Vanguard           in excess of $230 billion. Through their jointly-owned
administers and    subsidiary, The Vanguard Group, Inc. ("Vanguard"), the Fund
distributes the    and the other funds in the Group obtain at cost virtually all
Fund               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 1995, the average expense
                   ratio (annual costs including advisory fees divided by
                   average net assets) for the Vanguard funds amounted to
                   approximately .31% compared to an average of 1.11% for the
                   mutual fund industry (data provided by Lipper Analytical
                   Services).
    
                   Vanguard employs a supporting staff of management and
                   administrative personnel needed to provide the requisite
                   services to the funds and also furnishes the funds with
                   necessary office space, furnishings and equipment. Each fund
                   pays a share of Vanguard's total expenses, which are
                   allocated among the funds under methods approved by the Board
                   of Directors (Trustees) of each fund. In addition, each fund
                   bears its own direct expenses, such as legal, auditing and
                   custodian fees.

                                                                              9
<PAGE>
                   The Officers of the Fund manage its day-to-day operations and
                   are responsible to the Fund's Board of Directors. The
                   Directors set broad policies for the Fund and choose its
                   Officers. A list of Directors and Officers of the Fund and a
                   statement of their present positions and principal
                   occupations during the past five years can be found in the
                   Statement of Additional Information.

                   Vanguard provides distribution and marketing services to the
                   funds. However, each fund bears its share of the Group's
                   distribution costs.
- -------------------------------------------------------------------------------
INVESTMENT         The Fund employs Mellon Capital Management Corporation, 595
ADVISER            Market St., Suite 3000, San Francisco, CA 94105, as its
                   investment adviser. Under an investment advisory agreement
Mellon Capital     dated January 15, 1996, the adviser manages the investment
Management         and reinvestment of the assets of the Fund and continuously
manages the        reviews, supervises and administers the Fund's investment
Fund's             program. The adviser discharges its responsibilities subject
investments        to the control of the Officers and Directors of the Fund.
   
                   The adviser is a professional counseling firm which manages
                   well-diversified stock and bond portfolios for institutional
                   clients. As of September 30, 1996 the adviser provided
                   investment advisory services to 212 clients and managed
                   assets with an approximate value of $46.4 billion. The
                   adviser's asset allocation strategy was developed by the
                   adviser's co-founder, William Fouse, in 1972, and is used by
                   84 of its clients and accounts for approximately $13.6
                   billion of the assets that it manages. For its asset
                   allocation clients, including the Fund, the adviser employs a
                   proprietary asset allocation model in managing client
                   investment portfolios and an indexing approach in selecting
                   individual equity securities. The Fund is one of the
                   adviser's two investment company clients.

                   The adviser was founded in October 1983 by William Fouse and
                   Thomas Loeb. They have been responsible for overseeing the
                   implementation of the firm's strategy for the Fund since the
                   Fund's inception in 1988. The adviser is a wholly-owned
                   subsidiary of MBC Investment Corporation, which itself is a
                   subsidiary of Mellon Bank Corporation.
    
                   The Fund pays the adviser a basic fee at the end of each
                   fiscal quarter, calculated by applying a quarterly rate,
                   based on the following annual percentage rates, to the Fund's
                   average month-end net assets for the quarter:

                   Net Assets                                  Rate 
                   ----------                                  ----
                   First $100 million                          .200% 
                   Next $900 million                           .150% 
                   Next $500 million                           .125% 
                   Over $1.5 billion                           .100% 

                   This fee may be increased or decreased by applying an
                   adjustment formula based on the performance of the Fund
                   relative to the investment record of the S&P 500 Index. The
                   fee payment will be increased (decreased) by an incentive
                   (penalty) of 0.05% of average net assets if the Fund's

10

                   cumulative investment performance for the thirty-six months
                   preceding the end of the quarter is at least six percentage
                   points above (below) the cumulative investment record of the
                   S&P 500 Index for the same period. For the year ended
                   September 30, 1996, the investment advisory fee paid by the
                   Fund represented an effective annual rate of .14 of 1% of
                   average net assets, before a decrease of .03 of 1% based on
                   performance.

                   The investment advisory agreement authorizes the adviser to
                   select brokers or dealers to execute purchases and sales of
                   the Fund's portfolio securities, and directs the adviser to
                   use its best efforts to obtain the best available price and
                   most favorable execution with respect to all transactions.
                   The full range and quality of brokerage services available
                   are considered in making these determinations.

                   The Fund has authorized the adviser to pay higher commissions
                   in recognition of brokerage services felt necessary for the
                   achievement of better execution, provided the adviser
                   believes this to be in the best interest of the Fund.
                   Although the Fund does not market its shares through
                   intermediary brokers or dealers, the Fund may place orders
                   with qualified broker-dealers who recommend the Fund to
                   clients if the Officers of the Fund believe that the quality
                   of the transaction and the commission are comparable to what
                   they would be with other qualified brokerage firms.

                   The Fund's Board of Directors may, without the approval of
                   shareholders, provide for: (a) the employment of a new
                   investment adviser pursuant to the terms of a new advisory
                   agreement, either as a replacement for an existing adviser or
                   as an additional adviser; (b) a change in the terms of an
                   advisory agreement; and (c) the continued employment of an
                   existing adviser on the same advisory contract terms where a
                   contract has been assigned because of a change in control of
                   the adviser. Any such change will only be made upon not less
                   than 30 days prior written notice to shareholders of the Fund
                   which shall include substantially the information concerning
                   the adviser that would have normally been included in a proxy
                   statement.

- -------------------------------------------------------------------------------
PERFORMANCE        The table below provides investment results for the Fund for
RECORD             several periods throughout the Fund'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
                   Standard & Poor's 500 Composite Stock Price Index, a
                   widely-used barometer of stock market activity, and the
                   Consumer Price Index, a statistical measure of changes in the
                   prices of goods and services. The tables do not make any
                   allowance for federal, state or local income taxes, which
                   shareholders must pay on a current basis.

                   The results should not be considered a representation of the
                   total return from an investment made in the Fund today. This
                   information is provided to help investors better understand
                   the Fund and may not provide a basis for comparison with
                   other investments or mutual funds which use a different
                   method to calculate performance.

                                                                             11
<PAGE>

                     AVERAGE ANNUAL RETURN FOR VANGUARD ASSET ALLOCATION FUND 
   
                   Fiscal Periods    Vanguard Asset     S&P 500       Consumer 
                   Ended 9/30/96    Allocation Fund      Index      Price Index
                   -------------    ---------------      -----      ----------- 
                   1 Year               +15.3%           +20.3%         +2.8% 
                   5 Years              +13.4            +15.2          +2.8 
                   Lifetime*            +14.1            +15.5          -- 
    
                   * November 3, 1988, to September 30, 1996. 
- -------------------------------------------------------------------------------
DIVIDENDS,         The Fund expects to pay dividends semi-annually from ordinary
CAPITAL GAINS      income. Net capital gains distributions, if any, will be
AND TAXES          distributed annually.

The Fund pays      In addition, in order to satisfy certain distribution
sem-annual         requirements of the Tax Reform Act of 1986, the Fund may
dividends and      declare special year-end dividend and capital gains
any capital        distributions during December. Such distributions, if
gains annually     received by shareholders by January 31, are deemed to have
                   been paid by the Fund and received by shareholders on
                   December 31 of the prior year.

                   Dividend and capital gains distributions may be automatically
                   reinvested or received in cash. See "Choosing a Distribution
                   Option" for a description of these distribution methods.

                   The Fund intends to continue to qualify for taxation as a
                   "regulated investment company" under the Internal Revenue
                   Code so that it will not be subject to federal income tax to
                   the extent its income is distributed to shareholders.
                   Dividends paid by the Fund from net investment income and net
                   short-term capital gains, 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 and net short-term
                   capital gains 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 the
                   Fund from domestic (U.S.) sources.

                   Distributions paid by the Fund from long-term capital gains,
                   whether received in cash or reinvested in additional shares,
                   are taxable as long-term capital gains, regardless of the
                   length of time you have owned shares in the Fund. Capital
                   gains distributions are made when the Fund realizes net
                   capital gains on sales of portfolio securities during the
                   year. The Fund does not seek to realize any particular amount
                   of capital gains during a year; rather, realized gains are a
                   by-product of portfolio management activities. Consequently,
                   capital gains distributions may be expected to vary
                   considerably from year to year; there will be no capital
                   gains distributions in years when the Fund realizes net
                   capital losses.

                   Note that if you accept capital gains distributions in cash,
                   instead of reinvesting them in additional shares, you are in
                   effect reducing the capital at work for you in the Fund.

12
<PAGE>

                   Also, keep in mind that if you purchase shares in the Fund
                   shortly before the record date for a dividend or capital
                   gains distribution, a portion of your investment will be
                   returned to you as a taxable distribution, regardless of
                   whether you are reinvesting your distributions or receiving
                   them in cash.

                   The Fund will notify you annually as to the tax status of
                   dividend and capital gains distributions paid by the Fund.

A capital gain     A sale of shares of the Fund is a taxable event and may
or loss may        result in a capital gain or loss. A capital gain or loss may
be realized upon   be realized from an ordinary redemption of shares or an
exchange or        exchange of shares between two mutual funds (or two
redemption         portfolios of a mutual fund).

                   Dividend distributions, capital gains distributions, and
                   capital gains or losses from redemptions and exchanges may be
                   subject to state and local taxes.

                   The Fund is required to withhold 31% of taxable dividends,
                   capital gains distributions, and redemptions paid to
                   shareholders who have not complied with IRS taxpayer
                   identification regulations. You may avoid this withholding
                   requirement by certifying on your Account Registration Form
                   your proper Social Security or Taxpayer Identification Number
                   and by certifying that you are not subject to backup
                   withholding.

                   The Fund has obtained a Certificate of Authority to do
                   business as a foreign corporation in Pennsylvania and does
                   business and maintains an office in that state. In the
                   opinion of counsel, the shares of the Fund are exempt from
                   Pennsylvania personal property taxes.

                   The tax discussion set forth above is included for general
                   information only. Prospective investors should consult their
                   own tax advisers concerning the tax consequences of an
                   investment in the Fund. The Fund is managed without regard to
                   tax ramifications.
- -------------------------------------------------------------------------------
THE SHARE PRICE    The Fund's share price or "net asset value" per share is
OF THE FUND        calculated by dividing the total assets of the Fund, less any
                   liabilities, by the total number of outstanding shares. The
                   net asset value is determined as of the close of the New York
                   Stock Exchange (generally, 4:00 p.m. Eastern time) on each
                   day that the Exchange is open for trading.
   

                   Common stocks 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 stocks is
                   taken from the exchange where the security is primarily
                   traded. Securities which are listed on an exchange but which
                   are not traded on the valuation date are valued at the mean
                   of the bid and ask prices. Unlisted securities for which
                   market quotations are readily available are valued at the
                   latest quoted bid price. Bonds are valued at the latest bid
                   prices and on the basis of a matrix system (which considers
                   such factors as security prices, yields, maturities and
    
                                                                             13
<PAGE>


                   ratings), both as furnished by independent pricing services.
                   Other assets and securities for which no quotations are
                   readily available are valued at fair value as determined in
                   good faith by the Directors. 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. Pricing services do not always consider each
                   security's bid or last sale price when providing prices.
                   However, prices reflect significant (that is,
                   institutional-sized) transactions of similar securities as
                   well as any developments involving specific securities.
                   Instruments with remaining maturities of 60 days or less may
                   be valued at cost (that is, after adding or subtracting any
                   amortized discount or premium), which approximates market
                   value.

                   The Fund's share price can be found daily in the mutual fund
                   listings of most major newspapers under the heading of
                   Vanguard.
- -------------------------------------------------------------------------------
GENERAL            The Fund is a Maryland corporation. The Articles of
INFORMATION        Incorporation permit the Directors to issue 1,000,000,000
                   shares of common stock, with a $.001 par value. The Board of
                   Directors has the power to designate one or more classes
                   ("series") of shares of common stock and to classify or
                   reclassify any unissued shares with respect to such series.
                   Currently the Fund is offering one class of shares.

                   The shares of the Fund 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 Directors can elect 100% of the Directors if they
                   so choose.

                   Annual meetings of shareholders will not be held except as
                   required by the Investment Company Act of 1940 and other
                   applicable law. An annual meeting will be held to vote on the
                   removal of a Director or Directors of the Fund if requested
                   in writing by the holders of not less than 10% of the
                   outstanding shares of the Fund.

                   All securities and cash are held by State Street Bank and
                   Trust Company, Boston, MA. The Vanguard Group, Inc., Valley
                   Forge, PA, serves as the Fund's Transfer and Dividend
                   Disbursing Agent. Price Waterhouse LLP, serves as independent
                   accountants for the Fund and audits its financial statements
                   annually. The Fund is not involved in any litigation.
- ------------------------------------------------------------------------------
14
<PAGE>

                              SHAREHOLDER GUIDE

OPENING AN         You may open a regular (non-retirement) account, either by
ACCOUNT AND        mail or wire. Simply complete and return an Account
PURCHASING         Registration Form and any required legal documentation,
SHARES             indicating the amount you wish to invest. Your purchase must
                   be equal to or greater than the $3,000 minimum initial
                   investment requirement or $1,000 for Uniform Gifts/Transfers
                   to Minors Act accounts. You must open a new Individual
                   Retirement Account by mail (IRAs may not be opened by wire)
                   using a Vanguard IRA Adoption Agreement. Your purchase must
                   be equal to or greater than the $1,000 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 Fund, please call our Investor Information Department at
                   1-800-662-7447. Note: For other types of account
                   registrations (e.g. corporations, associations, other
                   organizations, trusts or powers of attorney), please call us
                   to determine which additional forms you may need.

                   The Fund's shares are purchased at the next-determined net
                   asset value after your investment has been received. The Fund
                   is offered on a no-load basis (i.e., there are no sales
                   commissions or 12b-1 fees).

Purchase           1) Because of the risks associated with common stock and bond
Restrictions          investments, the Fund is intended to be a long-term
                      investment vehicle and is not designed to provide
                      investors with a means of speculating on short-term market
                      movements. Consequently, the Fund reserves the right to
                      reject any specific purchase (and exchange purchase)
                      request. The Fund also reserves the right to suspend the
                      offering of shares for a period of time.

                   2) Vanguard will not accept third-party checks to purchase
                      shares of the Fund. Please be sure your purchase check is
                      made payable to the Vanguard Group.
              
Additional         Subsequent investments to regular accounts may be made by 
Investments        mail ($100 minimum), wire ($1,000 minimum), exchange from
                   another Vanguard Fund account, or Vanguard Fund Express.
                   Subsequent investments to Individual Retirement Accounts may
                   be made by mail ($100 minimum) or exchange from another
                   Vanguard Fund account. In some instances, contributions may
                   be made by wire or Vanguard Fund Express. Please call us for
                   more information on these options.
                   ------------------------------------------------------------
                                                                             15
<PAGE>
<TABLE>
<CAPTION>

                                                                         ADDITIONAL INVESTMENTS 
                                    NEW ACCOUNT                           TO EXISTING ACCOUNTS
<S>                      <C>                                           <C>
Purchasing By Mail       Please include the amount of your             Additional investments should
Complete and sign the    initial investment on the registration        include the Invest-by-Mail
enclosed Account         form. make your check payable to              remittance form attached to
Registration Form        The Vanguard Group-78 and mail to:            your Fund confirmation
                                                                       statements. Please make your
                         Vanguard Financial Center                     check payable to The Vanguard
                         P.O. Box 2600                                 Group-78, write your account
                         Valley Forge, PA 19482                        number on your check and,
                                                                       using the return envelope
                                                                       provided, mail to the address
                                                                       indicated on the
                                                                       Invest-by-Mail Form.

For express              Vanguard Financial Center                     All written requests should be
or registered mail,      455 Devon Park Drive                          mailed to one of the addresses
send to:                 Wayne, PA 19087                               indicated for new  accounts. Do not 
                                                                       send registered or express mail 
                                                                       to the post office box address. 
                         ----------------------------------------------------------------------------------
</TABLE>

Purchasing By Wire                  CORESTATES BANK, N.A. 
                                    ABA 031000011 
Money should be                     CORESTATES NO. 0101 9897 
wired to:                           ATTN VANGUARD 
                                    VANGUARD ASSET ALLOCATION FUND 
Before Wiring                       ACCOUNT NUMBER 
                                    ACCOUNT REGISTRATION 
Please contact     
Client Services    
(1-800-662-2739)   
   
                   To ensure proper receipt, please be sure your bank includes
                   the name of the Fund, 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 Fund and
                   Custodian Bank are open for business.

                   ------------------------------------------------------------
Purchasing By      You may open an account or purchase additional shares by
Exchange (from a   making an exchange from another Vanguard Fund account.
Vanguard account)  However, the Fund reserves the right to refuse any exchange
                   purchase request. Call our Client Services Department toll-
                   free at 1-800-662-2739. The new account will have the same
                   registration as the existing account.
                   ------------------------------------------------------------
Purchasing By      The Fund Express Special Purchase option lets you move money
Fund Express       from your bank account to your Vanguard account at your
                   request. Or if you choose the Automatic Investment option,
Special Purchase   money will be moved from your bank account to your Vanguard
and Automatic      account on the schedule (monthly, bimonthly [every other
Investment         quarterly, semiannually or yearly) you select. To establish
    
16
   
                   these Fund Express options, please provide the appropriate
                   information on the Account Registration Form. We will send
                   you a confirmation of your Fund Express service; please wait
                   two weeks before using the service.
- -------------------------------------------------------------------------------
    
CHOOSING A         You must select one of three distribution options: 
DISTRIBUTION 
OPTION             1. Automatic Reinvestment Option -- Both dividends and
                      capital gains distributions will be reinvested in
                      additional Fund shares. This option will be selected for
                      you unless you specify one of the other options.
 
                   2. Cash Dividend Option -- Your dividends will be paid in
                      cash and your capital gains will be reinvested in
                      additional Fund shares.

                   3. All Cash Option -- Both dividend and capital gains
                      distributions will be paid in cash.

                   You may change your option by calling our Client Services
                   Department (1-800- 662-2739).
   
                   In addition, an option to invest your cash dividends and/or
                   capital gains distributions in another Vanguard Fund account
                   is available. Please call our Client Services Department
                   (1-800-662-2739) for information. You may also elect Vanguard
                   Dividend Express which allows you to transfer your cash
                   dividends and/or capital gains distributions automatically to
                   your bank account. Please see "Other Vanguard Services" for
                   more information.
    
- -------------------------------------------------------------------------------
TAX CAUTION        Under Federal tax laws, the Fund is required to distribute
Investors should   net capital gains and dividend income to Fund shareholders.
ask about the      These distributions are made to all shareholders who own Fund
timing of capital  shares as of the distribution's record date, regardless of
gains and dividend how long the shares have been owned. Purchasing shares just
distributions      prior to the record date could have a significant impact on
before investing   your tax liability for the year. For example, if you purchase
                   shares immediately prior to the record date of a sizable
                   capital gain or income dividend distribution, you will be
                   assessed taxes on the amount of the capital gain and/or
                   dividend distribution later paid even though you owned the
                   Fund shares for just a short period of time. (Taxes are due
                   on the distributions even if the dividend or gain is
                   reinvested in additional Fund shares.) While the total value
                   of your investment will be the same after the distribution --
                   the amount of the distribution will offset the drop in the
                   net asset value of the shares -- you should be aware of the
                   tax implications the timing of your purchase may have.
   
                   Prospective investors should, therefore, inquire about
                   potential distributions before investing. The Fund's annual
                   capital gains distributions normally occur in December, while
                   income dividends are generally paid semi-annually in June and
                   December. For additional information on distributions and
                   taxes, see the section titled "Dividends, Capital Gains and
                   Taxes."
    
- -------------------------------------------------------------------------------
                                                                             17
<PAGE>
IMPORTANT          The easiest way to establish optional Vanguard services on
INFORMATION        your account is to select the options you desire when you
                   complete your Account Registration Form. If you wish to add
Optional Services  shareholder 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          For our mutual protection, we may require a signature
Guarantees         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. If a
                   certificate is lost, you may incur an expense to replace it.

Broker-Dealer      If you purchase shares in Vanguard Funds through a registered
Purchases          broker-dealer or investment adviser, the broker-dealer or
                   adviser may charge a service fee.

Cancelling Trades  The Fund will not cancel any trade (e.g., a purchase,
                   exchange, or redemption) believed to be authentic, received
                   in writing or by telephone, once the trade has been received.
   
Electronic         You may receive a prospectus for the Fund or any of the
Prospectus         Vanguard Funds in an electronic format. Please call
Delivery           1-800-231-7870 for additional information, or see "Other
                   Vanguard Services-Computer Access." You may also receive a
                   paper copy of the prospectus, by calling 1-800-662-7447.
    
- -------------------------------------------------------------------------------
WHEN YOUR          Your trade date is the date on which your account is
ACCOUNT WILL BE    credited. If your purchase is made by check, Federal Funds
CREDITED           wire, or exchange, and is received by the close of regular
                   trading on the New York Stock Exchange, (generally 4:00 p.m.
                   Eastern time), your trade date is the day of receipt. If your
                   purchase is received after the close of the Exchange, your
                   trade date is the next business day. Your shares are
                   purchased at the net asset value determined on your trade
                   date.

                   In order to prevent lengthy processing delays caused by the
                   clearing of foreign checks, Vanguard will only accept a
                   foreign check which has been drawn in U.S. dollars and has
                   been issued by a foreign bank with a U.S. correspondent bank.
                   The name of the U.S. correspondent bank must be printed on
                   the face of the foreign check.

- -------------------------------------------------------------------------------
SELLING YOUR       You may withdraw any portion of the funds in your account by
SHARES             redeeming shares at any time (please see "Important
                   Redemption Information"). You generally 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 Asset Allocation Fund, P.O. Box 1120, Valley Forge,

18
<PAGE>
   
                   PA 19482. (For express or registered mail, send your request
                   to Vanguard Financial Center, Vanguard Asset Allocation Fund,
                   455 Devon Park Drive, Wayne, PA 19087.) The redemption price
                   of shares will be the Fund's net asset value next determined
                   after Vanguard has received all required documents in Good
                   Order.
                   ------------------------------------------------------------
Definition of      Good Order means that the request includes the following:
Good Order 
                   1. The account number and Fund 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 you hold for the account.
    
                   If you have questions about this definition as it pertains to
                   your request, please call our Client Services Department at
                   1-800-662-2739.
                   ------------------------------------------------------------
   
Selling By         To sell shares by telephone, you or your pre-authorized
Telephone          representative may call our Client Services Department at
                   1-800-662-2739. The proceeds will be sent to you by mail.
                   Please Note: As a protection against fraud, your telephone
                   mail redemption privilege will be suspended for 15 calendar
                   days following any expedited address change to your account.
                   An expedited address change is one that is made by telephone,
                   by Vanguard Online or, in writing, without the signatures of
                   all account owners. Please see "Important Information About
                   Telephone Transactions."
                   ------------------------------------------------------------
Selling By Fund    If you select the Fund Express Automatic Withdrawal option,
Express            money will be automatically moved from your Vanguard Fund
                   account to your bank account according to the schedule you
                   have selected. The Special Redemption option lets you move
Automatic          money from your Vanguard account to your bank account on your
Withdrawal         request. You may elect Fund Express on the Account
& Special          Registration Form or call our Investor Information Department
Redemption         at 1-800-662-7447 for a Fund Express application.
                   ------------------------------------------------------------
Selling By         You may sell shares by making an exchange to another Vanguard
Exchange           Fund account. Please see "Exchanging Your Shares" for
                   details.
                   ------------------------------------------------------------
Important          Shares purchased by check or Fund Express may be redeemed at
Redemption         any time. However, your redemption proceeds will not be paid
Information        until payment for the purchase is collected, which may take
                   up to ten calendar days.
                   ------------------------------------------------------------
Delivery of        Redemption requests received by telephone prior to the close
Redemption         of regular trading on the New York Stock Exchange (generally,
Proceeds           4:00 p.m. Eastern time) are processed on the day of receipt
                   and the redemption proceeds are normally sent on the
                   following business day.
    
                                                                             19
<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. The Fund reserves the right
                   to revise or terminate the telephone redemption privilege at
                   any time.

                   Redemption proceeds must be sent to you within seven days of
                   receipt of your request in Good Order except as described in
                   "Important Redemption Information."
    
                   If you experience difficulty in making a telephone redemption
                   during periods of drastic economic or market changes, your
                   redemption request may be made by regular or express mail. It
                   will be implemented at the net asset value next determined
                   after your request has been received by Vanguard in Good
                   Order.
  
                   The Fund may suspend the redemption right or postpone payment
                   at times when the New York Stock Exchange is closed or under
                   any emergency circumstances as determined by the United
                   States Securities and Exchange Commission.

                   If the Board of Directors determines that it would be
                   detrimental to the best interests of the Fund's remaining
                   shareholders to make payment in cash, the Fund may pay
                   redemption proceeds in whole or in part by a distribution in
                   kind of readily marketable securities.
                   ------------------------------------------------------------
   
Vanguard's         If you make a redemption from a qualifying account, Vanguard
Average Cost       will send you an Average Cost Statement which provides you
Statement          with the cost and tax basis of the shares you redeemed.
                   Please see "Statements and Reports" for additional
                   information.
                   ------------------------------------------------------------
Low Balance Fee    Due to the relatively high cost of maintaining smaller
and Minimum        accounts, the Fund will automatically deduct a $10 annual fee
Account Balance    from non-retirement accounts with balances falling below
Requirement        $2,500 ($500 for Uniform Gifts/Transfers to Minors Act
                   accounts). The fee generally will be waived for investors
                   whose aggregate Vanguard assets exceed $50,000. In addition,
                   the Fund reserves the right to liquidate any non-retirement
                   account that is below the minimum initial investment. In such
                   a case, you may be notified that the value of your account is
                   below the Fund's minimum account balance requirement. You
                   would then be allowed 60 days to make an additional
                   investment before the account is liquidated. Proceeds would
                   be promptly paid to the registered shareholder.
    
                   Vanguard will not liquidate your account if it has fallen
                   below $3,000 solely as a result of declining markets (i.e., a
                   decline in a Portfolio's net asset value).
- -------------------------------------------------------------------------------
EXCHANGING YOUR    Should your investment goals change, you may exchange your
SHARES             shares of Vanguard Asset Allocation Fund for those of other
                   available Vanguard Funds.

Exchanging by      In addition to the details below, please see "Important
Telephone          Information About Telephone Transactions."

Call Client        When exchanging shares by telephone, please have ready the
Services           Fund name, account number, Social Security number or Employer
(1-800-662-2739)   Identification number listed on the account, and the exact

20
<PAGE>
   
                   name and address in which the account is registered. Only the
                   registered shareowner (or his or her preauthorized
                   representative) may complete such an exchange. Requests for
                   telephone exchanges received prior to the close of the New
                   York Stock Exchange (generally, 4:00 p.m. Eastern time) are
                   processed at the close of business that same day.
    
                   Requests received after the close of the Exchange are
                   processed the next business day. Telephone exchanges are not
                   accepted into or from Vanguard Balanced Index Fund, Vanguard
                   Index Trust, Vanguard International Equity Index Fund and
                   Vanguard Quantitative Portfolios. If you experience
                   difficulty in making a telephone exchange, your exchange
                   request may be made by regular or express mail, and it will
                   be implemented at the closing net asset value on the date
                   received by Vanguard provided the request is received in Good
                   Order.

                   Neither the Fund nor Vanguard is responsible for the
                   authenticity of exchange instructions received by telephone.
                   Investors bear the full risk of any loss arising from
                   unauthorized telephone exchanges. To prohibit telephone
                   exchanges on your account, please notify the Fund in writing.
                   Otherwise, the telephone exchange privilege will be
                   automatically established for your account.
                   ------------------------------------------------------------
   
Exchanging By      Please be sure to include on your exchange request the name
Mail               and account number of your current Fund, the name of the Fund
                   you wish to exchange into, the amount you wish to exchange,
                   and the signatures of all registered account holders. Send
                   your request to Vanguard Financial Center, Vanguard Asset
                   Allocation Fund, P.O. Box 1120, Valley Forge, PA 19482. (For
                   express or registered mail, send your request to Vanguard
                   Financial Center, Vanguard Asset Allocation Fund, 455 Devon
                   Park Drive, Wayne, PA 19087.)
                   ------------------------------------------------------------
    
Important          Before you make an exchange, you should consider the
Exchange           following:
Information 
                   o 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).

                   o An exchange is treated as a redemption and a purchase.
                     Therefore, you could realize a taxable gain or loss on the
                     transaction.

                   o Exchanges are accepted only if the registrations and the
                     Taxpayer Identification numbers of the two accounts are
                     identical.

                   o The shares to be exchanged must be on deposit and not held
                     in certificate form.
   
                   o New accounts are not currently accepted in Vanguard/Windsor
                     Fund.
    
                   o The redemption price of shares redeemed by exchange is the
                     net asset value next determined after Vanguard has received
                     the required documentation in Good Order.

                   o When opening a new account by exchange, you must meet the
                     minimum investment requirement of the new Fund.

                                                                             21
<PAGE>
                   Every effort will be made to maintain the exchange privilege.
                   However, the Fund reserves the right to revise or terminate
                   its provisions, limit the amount of or reject any exchange,
                   as deemed necessary, at any time.

                   The exchange privilege is only available in states in which
                   the shares of the Fund are registered for sale. The Fund's
                   shares are currently registered for sale in all 50 states and
                   the Fund intends to maintain such registration.
- -------------------------------------------------------------------------------
EXCHANGE           The Fund's exchange privilege is not intended to afford
PRIVILEGE          shareholders a way to speculate on short-term movements in
LIMITATIONS        the market. Accordingly, in order to prevent excessive use of
                   the exchange privilege that may potentially disrupt the
                   management of the Fund and increase transaction costs, the
                   Fund has established a policy of limiting excessive exchange
                   activity.
   
                   Exchange activity generally will not be deemed excessive if
                   limited to two substantive exchange redemptions (at least 30
                   days apart) from the Fund during any twelve month period.
                   "Substantive" means either a dollar amount large enough to
                   have a negative impact on the Portfolio or a series of
                   movements between Vanguard Funds. Notwithstanding these
                   limitations, the Fund reserves the right to reject any
                   purchase request (including exchange purchases from other
                   Vanguard portfolios) that is reasonably deemed to be
                   disruptive to efficient portfolio management.
    
- -------------------------------------------------------------------------------
IMPORTANT          The ability to initiate redemptions (except wire redemptions)
INFORMATION        and exchanges by telephone is automatically established on
ABOUT TELEPHONE    your account unless you request in writing that telephone
TRANSACTIONS       transactions on your account not be permitted.

                   To protect your account from losses resulting from
                   unauthorized or fraudulent telephone instructions, Vanguard
                   adheres to the following security procedures:

                   1. Security Check. To request a transaction by telephone, the
                      caller must know (i) the name of the Portfolio; (ii) the
                      10-digit account number; (iii) the exact name and address
                      used in the registration; and (iv) the Social Security or
                      Employer Identification number listed on the account.

                   2. Payment Policy. The proceeds of any telephone redemption
                      by mail will be made payable to the registered shareowner
                      and mailed to the address of record, only.

                   Neither the Fund nor Vanguard will be responsible for the
                   authenticity of transaction instructions received by
                   telephone, provided that reasonable security procedures have
                   been followed. Vanguard believes that the security procedures
                   described above are reasonable and that if such procedures
                   are followed, you will bear the risk of any losses resulting
                   from unauthorized or fraudulent telephone transactions on
                   your account. 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.
- -------------------------------------------------------------------------------
22

<PAGE>

TRANSFERRING       You may transfer the registration of any of your Fund shares
REGISTRATION       to another person by completing a transfer form and sending
                   it to: Vanguard Financial Center, P.O. Box 1110, Valley
                   Forge, PA 19482, Attention: Transfers Department. The request
                   must be in Good Order. To receive a transfer form and full
                   instructions, please call our Client Services Department
                   (1-800-662-2739).
- -------------------------------------------------------------------------------
STATEMENTS AND     Vanguard will send you a confirmation statement each time you
REPORTS            initiate a transaction in your account, except for
                   checkwriting redemptions from Vanguard money market accounts.
                   You will also receive a comprehensive account statement at
                   the end of each calendar quarter. The fourth-quarter
                   statement will be a year- end statement, listing all
                   transaction activity for the entire calendar year.
   
                   Vanguard's Average Cost Statement provides you with the
                   average cost of shares redeemed from your account during the
                   calendar year, 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 along with their Fund
                   Summary Statement. Please call our Client Services Department
                   (1-800-662-2739) for information.
    
                   Financial reports on the Fund will be mailed to you
                   semi-annually, according to the Fund's fiscal year-end. 
- -------------------------------------------------------------------------------
OTHER VANGUARD     For more information about any of these services, please call
SERVICES           our Investor Information Department at 1-800-662-7447.

Vanguard Direct    With Vanguard's Direct Deposit Service, most U.S. Government
Deposit Service    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 Vanguard's Automatic Exchange Service allows you to move
Exchange Service   money automatically among your Vanguard Fund accounts. For
                   instance, the service can be used to "dollar cost average"
                   from a money market portfolio into a stock or bond fund or to
                   contribute to an IRA or other retirement plan. Please contact
                   our Client Services Department at 1-800-662-2739 for
                   additional information.

Vanguard Fund      Vanguard's Fund Express allows you to transfer money between
Express            your Fund account and your account at a bank, savings and
                   loan association, or a credit union that is a member of the
                   Automated Clearing House (ACH) system. You may elect this
                   service on the Account Registration Form or call our Investor
                   Information Department (1-800-662-7447) for a Fund Express
                   application.

                   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.

                                                                             23
<PAGE>
Vanguard Dividend  Vanguard's Dividend Express allows you to transfer your
Express            dividends and/or capital gains distributions automatically
                   from your Fund account, one business day after the Fund's
                   payable date, to your account at a bank, savings and loan
                   association, or credit union that is a member of the
                   Automated Clearing House (ACH) network. You may elect this
                   service on the Account Registration Form or call our Investor
                   Information Department (1-800-662-7447) for a Vanguard
                   Dividend Express application.
   
Vanguard           Vanguard's Tele-Account is a convenient, automated service
Tele-Account       that provides share price, price change and yield quotations
                   on Vanguard Funds through any TouchTone(TM) telephone. This
                   service also lets you obtain information about your account
                   balance, your last transaction, and your most recent dividend
                   or capital gains payment. In addition, you may perform
                   investment exchanges of Vanguard Fund shares and redemptions
                   by check using Tele-Account. To contact Vanguard's
                   Tele-Account service, dial 1-800-ON-BOARD (1-800-662-6273). A
                   brochure offering detailed operating instructions is
                   available from our Investor Information Department
                   (1-800-662-7447).

Computer Access     
                                 
Vanguard Online    Vanguard Online allows you to obtain information via your
Keyword: vanguard  personal computer on Fund share price, yield, and total
                   return. Vanguard Online is offered through America Online
                   (AOL). To establish an AOL account, call 1-800-238-6336.

Vanguard on the    Vanguard sponsors an education-oriented website offering news
World Wide Web     and information about Vanguard Funds and services, as well as
                   interactive, easy-to-use investment planning tools.
http://www.vanguard.com 
    
- -------------------------------------------------------------------------------
24
<PAGE>


                     (This page intentionally left blank.)


- --------------------------
The Vanguard Group
Vanguard Financial Center
P.O. Box 2600
Valley Forge, PA 19482
   
Investor Information
  Department:
1-800-662-7447 (SHIP)                              PROSPECTUS

Client Services                                  JANUARY 17, 1997
  Department:
1-800-622-2739 (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


P078

<PAGE>

   
                                    PART B 
                     VANGUARD ASSET ALLOCATION FUND, INC. 
                     STATEMENT OF ADDITIONAL INFORMATION 
                               JANUARY 17, 1997 

   This Statement is not a prospectus but should be read in conjunction with 
the Fund's current Prospectus (dated January 17, 1997). To obtain the 
Prospectus please call: 
    

                         INVESTOR INFORMATION DEPARTMENT
                              1-800-662-7447 (SHIP)

                                TABLE OF CONTENTS
   

                                                        Page 
                                                        ----
Investment Limitations  .......................          B-1 
Purchase of Shares  ...........................          B-2 
Redemption of Shares  .........................          B-3 
Management of the Fund  .......................          B-4 
Performance Measures  .........................          B-7 
Total Return  .................................          B-9 
Investment Advisory Services  .................          B-9 
Portfolio Transactions  .......................          B-10 
Description of U.S. Government Securities  ....          B-11 
Description of Repurchase Agreements  .........          B-11 
Futures Contracts  ............................          B-12 
Glossary  .....................................          B-15 
Financial Statements  .........................          B-15 
    

                            INVESTMENT LIMITATIONS 

   
   The following restrictions are fundamental policies and cannot be changed 
without approval of the holders of a majority of the outstanding shares of 
the Fund, as defined in the Investment Company Act of 1940 (the "1940 Act"). 
The Fund may not under any circumstances: 
    

   1) Borrow money, except from banks (or through reverse repurchase 
      agreements) for temporary or emergency purposes (not leveraging), and 
      then only in an amount not in excess of 15% of the value of the Fund's 
      net assets at the time the borrowing is made. Whenever borrowing 
      exceeds 5% of the value of the Fund's assets, the Fund will not make 
      any additional investments; 

   2) With respect to 75% of the value of its total assets, purchase the 
      securities of any issuer (except obligations of the United States 
      government and its instrumentalities) if as a result the Fund would 
      hold more than 10% of the outstanding voting securities of the issuer, 
      or more than 5% of the value of the Fund's total assets would be 
      invested in the securities of such issuer; 

   3) Invest for the purpose of exercising control of management of any 
      company; 

   4) Purchase the securities of any other investment company, except as they 
      may be acquired as part of a merger, consolidation or acquisition of 
      assets or otherwise to the extent permitted by Section 12 of the 1940 
      Act. The Fund will invest only in investment companies which have 
      investment objectives consistent with those of the Fund; 

                                                                             B-1
<PAGE>

    5) The Fund will not engage in the business of underwriting securities 
       issued by other persons except to the extent that the Fund may 
       technically be deemed to be an underwriter under the Securities Act of 
       1933 in disposing of portfolio securities. Additionally, the Fund will 
       not 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 Fund's investment in The 
       Vanguard Group, Inc.); 

   
    6) Invest in commodities, except that the Fund may invest in futures 
       contracts, options and options on futures contracts to the extent that 
       not more than 5% of the Fund's assets are required as margin deposit 
       for futures contracts; 
    

    7) Invest in real estate or real estate limited partnership interests 
       although the Fund may purchase and sell securities of companies which 
       invest in real estate, or interests therein; 

    8) Purchase securities on margin or sell any securities short except as 
       specified in investment limitation No. 6 above; 

   
    9) Make loans except (i) by purchasing bonds, debentures or similar 
       obligations (including repurchase agreements) which are either 
       publicly distributed or customarily purchased by institutional 
       investors, and (ii) by lending its securities to banks, brokers, 
       dealers and other financial institutions so long as such loans are not 
       inconsistent with the Investment Company Act or the Rules and 
       Regulations or interpretations of the Securities and Exchange 
       Commission thereunder. No loan of securities will be made if, as a 
       result the aggregate of such loans in the Fund would exceed 33 1/3 % 
       of the value of the Fund's total assets; 
    

   10) Pledge, mortgage, or hypothecate any of its assets to an extent 
       greater than 5% of its total assets; and 

   11) Invest more than 25% of the value of its total assets in any one 
       industry. 

   
   These investment limitations are considered at the time Fund securities 
are purchased. 
    

   Notwithstanding these limitations, the Fund 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 Fund 
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 Fund and other investment companies. See "Management 
of the Fund." 

                              PURCHASE OF SHARES 

   
   The Fund reserves the right in its sole discretion (i) to suspend the 
offerings of its shares, (ii) to reject purchase orders when in the judgment 
of management such rejection is in the best interest of the Fund, and (iii) 
to reduce or waive the minimum investment for or any other restrictions on 
initial and subsequent investments for certain fiduciary accounts or under 
circumstances where certain economies can be achieved in sales of the Fund's 
shares. 
    

B-2
   
<PAGE>

                             REDEMPTION OF SHARES 

   
   The Fund may suspend redemption privileges or postpone the date of payment 
(i) during any period that the New York Stock Exchange is closed, or trading 
on the Exchange is restricted as determined by the Securities and Exchange 
Commission (the "Commission"), (ii) during any period when an emergency 
exists as defined by the rules of the Commission as a result of which it is 
not reasonably practicable for the Fund to dispose of securities owned by it, 
or fairly to determine the value of its assets, and (iii) for such other 
periods as the Commission may permit. 
    

   The Fund has made an election with the Commission to pay in cash all 
redemptions requested by any shareholder of record limited in amount during 
any 90-day period to the lesser of $250,000 or 1% of the net assets of the 
Fund at the beginning of such period. Such commitment is irrevocable without 
the prior approval of the Commission. Redemptions in excess of the above 
limits may be paid in whole or in part, in investment securities or in cash, 
as the Directors may deem advisable; however, payment will be made wholly in 
cash unless the Directors believe that economic or market conditions exist 
which would make such a practice detrimental to the best interests of the 
Fund. If redemptions are paid in investment securities, such securities will 
be valued as set forth in the Prospectus under "The Fund's Share Price" and a 
redeeming shareholder would normally incur brokerage expenses if he converted 
these securities to cash. 

   
   No charge is made by the Fund for redemptions. Any redemption may be more 
or less than the shareholder's cost depending on the market value of the 
securities held by the Fund. 
    

                                                                             B-3
<PAGE>

                            MANAGEMENT OF THE FUND 

DIRECTORS AND OFFICERS 

   
   The Officers of the Fund manage its day-to-day operations and are 
responsible to the Fund's Board of Directors. The Directors set broad 
policies for the Fund and choose its Officers. The following is a list of 
Directors and Officers of the Fund and a statement of their present positions 
and principal occupations during the past five years. The mailing address of 
the Directors and Officers of the Fund is Post Office Box 876, Valley Forge, 
PA 19482. 

JOHN C. BOGLE, Chairman and Director 
 Chairman and Director of The Vanguard Group, Inc., and of each of the 
 investment companies in The Vanguard Group; Director of the Mead 
 Corporation, General Accident Insurance and Chris-Craft Industries, Inc. 

JOHN J. BRENNAN, President, Chief Executive Officer & Director* 
 President, Chief Executive Officer and Director of The Vanguard Group, Inc., 
 and of each of the investment companies in The Vanguard Group. 

ROBERT E. CAWTHORN, Director 
 Chairman Emeritus and Director of Rhone-Poulenc Rorer, Inc; Director of Sun 
 Company, Inc. and Westinghouse Electric Corporation. 
    

BARBARA BARNES HAUPTFUHRER, Director 
 Director of The Great Atlantic and Pacific Tea Company, Alco Standard Corp., 
 Raytheon Company, Knight-Ridder, Inc., and Massachusetts Mutual Life 
 Insurance Co. and Trustee Emerita of Wellesley College. 

   
BRUCE K. MACLAURY, Director 
 President Emeritus of The Brookings Institution; Director of American 
 Express Bank Ltd., The St. Paul Companies, Inc., and National Steel 
 Corporation. 
    

BURTON G. MALKIEL, Director 
 Chemical Bank Chairman's Professor of Economics, Princeton University; 
 Director of Prudential Insurance Co. of America, Amdahl Corporation, Baker 
 Fentress & Co., The Jeffrey Co., and Southern New England Communications 
 Company. 

   
ALFRED M. RANKIN, Jr., Director 
 Chairman, President, and Chief Executive Officer of NACCO Industries, Inc.; 
 Director of The BFGoodrich Company and The Standard Products Company. 

JOHN C. SAWHILL, Director 
 President and Chief Executive Officer, The Nature Conservancy; formerly, 
 Director and Senior Partner, McKinsey & Co.; and President, New York 
 University; Director of Pacific Gas and Electric Company, Procter & Gamble 
 Company and NACCO Industries. 

JAMES O. WELCH, JR., Director 
 Retired Chairman of Nabisco Brands, Inc., retired Vice Chairman and Director 
 of RJR Nabisco; Director of TECO Energy, Inc. and Kmart Corporation. 

J. LAWRENCE WILSON, Director 
 Chairman and Chief Executive Officer of Rohm & Haas Company; Director of 
 Cummins Engine Company; and Trustee of Vanderbilt University. 
    

RAYMOND J. KLAPINSKY, Secretary* 
 Senior Vice President and Secretary of The Vanguard Group, Inc.; Secretary 
 of each of the investment companies in The Vanguard Group. 

   
RICHARD F. HYLAND, Treasurer* 
 Treasurer of The Vanguard Group, Inc., and of each of the investment 
 companies in The Vanguard Group. 

KAREN E. WEST, Controller* 
 Principal of The Vanguard Group, Inc.; Controller of each of the investment 
 companies in The Vanguard Group. 
 ------ 
 * Officers of the Fund are "interested persons" as defined in the Investment 
   Company Act of 1940. 
    
B-4

<PAGE>

   
   The Fund is a member of The Vanguard Group of Investment Companies. 
Through their jointly-owned subsidiary, The Vanguard Group, Inc. 
("Vanguard"), the Fund 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 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 Directors (Trustees) 
of each Fund. In addition, each Fund bears its own direct expenses such as 
legal, auditing and custodian fees. 

   The Fund's officers are also officers and employees of Vanguard. No 
officer or employee owns, or is permitted to own, any securities of any 
external adviser for the Funds. 

   The Vanguard Group adheres to a Code of Ethics established pursuant to 
Rule 17j-1 under the Investment Company Act of 1940. The Code is designed to 
prevent unlawful practices in connection with the purchase or sale of 
securities by persons associated with Vanguard. Under Vanguard's Code of 
Ethics certain officers and employees of Vanguard who are considered access 
persons are permitted to engage in personal securities transactions. However, 
such transactions are subject to procedures and guidelines substantially 
similar to those recommended by the mutual fund industry and approved by the 
U.S. Securities and Exchange Commission. 

   
   The Vanguard Group was established and operates under a Funds' Service 
Agreement which was approved by the shareholders of each of the Funds. The 
amounts which each of the Funds have invested are adjusted from time to time 
in order to maintain the proportionate relationship between each Fund's 
relative net assets and its contribution to Vanguard's capital. The Fund's 
Service Agreement provides that: (a) each Vanguard Fund may invest up to .40% 
of its current assets in Vanguard, and (b) there is no limit on the amount 
that each Vanguard Fund may contribute to Vanguard's capitalization. At 
September 30, 1996, the Fund had contributed capital of $219,000, 
representing 1.1% 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 September 30, 1996, the Fund's allocated share of 
Vanguard's actual net costs of operations relating to management and 
administrative services (including transfer agency) totaled approximately 
$6,402,000. 
    

DISTRIBUTION 

   Vanguard provides all distribution and marketing activities for the Funds 
in the Group. Vanguard Marketing Corporation, a wholly-owned subsidiary of 
Vanguard, acts as Sales Agent for the shares of the Funds in connection with 
any sales made directly to investors in the states of Florida, Missouri, New 
York, Ohio, Texas and such other states as it may be required. 

   
   The principal distribution expenses are for advertising, promotional 
materials and marketing personnel. Distribution services may also include 
organizing and offering to the public, from time to time, one or more new 
investment companies which will become members of the Group. The Directors 
and Officers of Vanguard determine the amount to be spent annually on 
distribution activities, the manner and amount to be spent on each Fund, and 
whether to organize new investment companies. 
    
                                                                             B-5
   
<PAGE>

   
   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 1% of its average month-end net assets. During the fiscal year ended 
September 30, 1996, the Fund paid approximately $421,000 of the Group's 
distribution and marketing expenses, which represented an effective annual 
rate of .02 of 1% of the Fund's average net assets. 
    

INVESTMENT ADVISORY SERVICES 

   
   Vanguard provides investment advisory services to Vanguard Money Market 
Reserves, Vanguard Municipal Bond Fund, several Portfolios of Vanguard Fixed 
Income Securities Fund, Vanguard California Tax- Free Fund, Vanguard Florida 
Insured Tax-Free Fund, Vanguard New Jersey Tax-Free Fund, Vanguard New York 
Insured Tax-Free Fund, Vanguard Pennsylvania Tax-Free Fund, Vanguard Ohio 
Tax-Free Fund, Vanguard Admiral Funds, Vanguard Tax-Managed Fund, Vanguard 
Balanced Index Fund, Vanguard Bond Index Fund, Vanguard Index Trust, Vanguard 
International Equity Index Fund, Total International Portfolio of Vanguard 
STAR Fund, Aggressive Growth Portfolio of Vanguard Horizon Fund, several 
Portfolios of Vanguard Variable Insurance Fund, a portion of Vanguard/Windsor 
II, Vanguard Institutional Index Fund, Vanguard REIT Index Portfolio of 
Vanguard Specialized Portfolios, and a portion of Vanguard/Morgan Growth Fund 
as well as several indexed separate accounts. These services are provided on 
an at-cost basis from a 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 DIRECTORS AND OFFICERS 

   
   The Fund pays each Director who is not also an Officer, an annual fee plus 
travel and other expenses incurred in attending Board meetings. The Fund's 
Officers and employees are paid by Vanguard which, in turn, is reimbursed by 
the Fund, and each other Fund in the Group, for its proportionate share of 
Officers' and employees' salaries and retirement benefits. During the year 
ended September 30, 1996 the Fund's proportionate share of remuneration paid 
to all Officers of the Fund, as a group, was approximately $60,746 including 
Directors. 

   Retired Directors who are not officers are paid an annual fee based on the 
number of years of service. The fee is equal to $1,000 for each year of 
service and each investment company member of The Vanguard Group contributes 
a proportionate amount to this fee based on its relative net assets. Under 
its retirement plan, Vanguard contributes annually an amount equal to 10% of 
each eligible officer's annual compensation plus 5.7% of that part of an 
eligible officer's compensation during the year, if any, that exceeds the 
Social Security Taxable Wage Base then in effect. Under its thrift plan, all 
eligible officers are permitted to make pre- tax contributions in an amount 
up to 4% of total compensation, subject to federal tax limitations, which are 
matched by Vanguard on a 100% basis. The Fund's proportionate share of 
retirement contributions made by Vanguard under its retirement and thrift 
plans on behalf of all Officers of the Fund, as a group, during the 1996 
fiscal year was approximately $1,650. 
    
B-6
<PAGE>

   
   The following table provides detailed information with respect to the 
amounts paid or accrued for the Directors for the fiscal year ended September 
30, 1996. 
    

                        VANGUARD ASSET ALLOCATION FUND 
                              COMPENSATION TABLE 
   
<TABLE>
<CAPTION>
                                               Pension or Retirement      Estimated 
                                Aggregate       Benefits Accrued as    Annual Benefits      Total Compensation 
                               Compensation        Part of Fund              Upon        From All Vanguard Funds 
     Names of Directors         From Fund            Expenses             Retirement       Paid to Directors(2) 
 --------------------------   --------------   ---------------------    ---------------   ----------------------- 
<S>                           <C>              <C>                     <C>               <C>
John C. Bogle(1)                     --                  --                     --                    -- 
John J. Brennan(1)                   --                  --                     --                    -- 
Barbara Barnes Hauptfuhrer         $677                $105                $15,000               $65,000 
Robert E. Cawthorn                 $677                $ 88                $13,000               $65,000 
Bruce K. MacLaury                  $734                $103                $12,000               $60,000 
Burton G. Malkiel                  $677                $ 70                $15,000               $65,000 
Alfred M. Rankin, Jr.              $677                $ 55                $15,000               $65,000 
John C. Sawhill                    $677                $ 66                $15,000               $65,000 
James O. Welch, Jr.                $677                $ 81                $15,000               $65,000 
J. Lawrence Wilson                 $677                $ 58                $15,000               $65,000 
</TABLE>
    
   
- ------ 
(1) As "Interested Directors," Messrs. Bogle and Brennan receive no 
    compensation for their service as Directors. 
(2) The amounts reported in this column reflect the total compensation paid 
    to each Director for their service as Director or Trustee of 34 Vanguard 
    Funds (33 in the case of Mr. Malkiel; 27 in the case of Mr. MacLaury). 

                             PERFORMANCE MEASURES 
    

   Vanguard may use reprinted material discussing The Vanguard Group, Inc. or 
any of the member funds of The Vanguard Group of Investment Companies. 

   Each of the investment company members of The Vanguard Group, including 
Vanguard Asset Allocation Fund, may, from time to time, use one or more of 
the following unmanaged indices for comparative performance purposes. 

Standard and Poor's 500 Composite Stock Price Index -- is a well diversified 
list of 500 companies representing the U.S. Stock Market. 

   
Wilshire 5000 Equity Index -- consists of nearly 7,000 common equity 
securities, covering all stocks in the U.S. for which daily pricing is 
available. 
    

Wilshire 4500 Equity Index -- consists of all stocks in the Wilshire 5000 
except for the 500 stocks in the Standard and Poor's 500 Index. 

Morgan Stanley Capital International EAFE Index -- is an arithmetic, market 
value-weighted average of the performance of over 900 securities listed on 
the stock exchanges of countries in Europe, Australia and the Far East. 

   
Goldman Sachs 100 Convertible Bond Index -- currently includes 71 bonds and 
29 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.

                                                                             B-7

<PAGE>

Salomon Brothers High-Grade Corporate Bond Index -- consists of publicly 
issued, non-convertible corporate bonds rated AA or AAA. It is a 
value-weighted, total return index, including approximately 800 issues with 
maturities of 12 years or greater. 

Lehman Brothers Aggregate Bond Index -- is a market weighted index that 
contains over 4,000 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 over 1,500 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 over 1,500 individually priced U.S. 
Treasury, agency, and corporate securities rated BBB - or better with 
maturities between 5 and 10 years. The index has a market value of over $600 
billion. 

Lehman Brothers Mutual Fund Long (10+) Government/Corporate Index -- is a 
market weighted index that contains over 1,900 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. 

Lehman Long-Term Treasury Bond -- is composed of all bonds covered by the 
Shearson Lehman Hutton Treasury Bond Index with maturities of 10 years or 
greater. 

Merrill Lynch Corporate & Government Bond -- consists of over 4,500 U.S. 
Treasury, Agency and investment grade corporate bonds. 

Lehman Corporate (Baa) Bond Index -- all publicly offered fixed rate, 
nonconvertible domestic corporate bonds rated Baa by Moody's, with a maturity 
longer than 1 year and with more than $25 million outstanding. This index 
includes over 1,000 issues. 

Lehman Brothers Long-Term Corporate Bond Index -- is a subset of the Lehman 
Corporate Bond Index covering all corporate, publicly issued, fixed-rate, 
nonconvertible U.S. debt issues rated at least Baa, with at least $50 million 
principal outstanding and maturity greater than 10 years. 

Bond Buyer Municipal Index (20 year) Bond -- is a yield index on current 
coupon high grade general obligation municipal bonds. 

Standard & Poor's Preferred Index -- is a yield index based upon the average 
yield of four high grade, noncallable preferred stock issues. 

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 -- 65% Standard & Poor's 500 Index and 35% Lehman Long-Term 
Corporate AA or Better Bond Index. 

Composite Index -- 65% Lehman Long-Term Corporate AA or Better Bond Index and 
a 35% weighting in a blended equity composite (75% Standard & Poor's/BARRA 
Value Index, 25% Standard & Poor's Utilities Index.) 
    

B-8

<PAGE>

   
Lehman Long-Term Corporate AA or Better Bond Index -- consists of all 
publicly issued, fixed rate, nonconvertible investment grade, 
dollar-denominated, SEC-registered corporate debt rated AA or AAA. 
    

                                 TOTAL RETURN 

   
   The average annual total return for the Fund for one and five years ended 
September 30, 1996 and for the period from inception (November 3, 1988) to 
September 30, 1996 was +15.27%, +13.45% and +14.06%, respectively. 
    

   Total return is computed by determining the average compounded rates of 
return over the 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. 

                         INVESTMENT ADVISORY SERVICES 

   
   The Fund employs Mellon Capital Management Corporation ("MCM"), 595 Market 
St., Suite 3000, San Francisco, California (the "Adviser") under an 
investment advisory agreement dated as of January 15, 1996 to manage the 
investment and reinvestment of the assets of the Fund and to continuously 
review, supervise and administer the Fund's investment program. The Adviser 
discharges its responsibilities subject to the control of the Officers and 
Directors of the Fund. 
    

   The Fund pays the Adviser a Basic fee at the end of each fiscal quarter, 
calculated by applying a quarterly rate, based on the following annual 
percentage rates, to the Fund's average month-end net assets for the quarter: 


          Net Assets                       Rate 
          ----------                       ---- 
          First $100 million ..........   .200% 
          Next $900 million  ..........   .150% 
          Next $500 million  ..........   .125% 
          Over $1.5 billion  ..........   .100% 


   This fee may be increased or decreased by applying an adjustment formula 
based on the performance of the Fund's portfolio relative to the investment 
record of the S&P 500 Index. The fee payment will be increased (decreased) by 
an incentive (penalty) of 0.05% of average net assets, if the Fund's 
cumulative investment performance for the thirty-six months preceding the end 
of the quarter is at least six percentage points above (below) the cumulative 
investment record of the S&P 500 Index for the same period. 

   
   The agreement will continue until March 31, 1998 and will be renewable 
thereafter for successive one- year periods, only if each renewal is 
specifically approved by a vote of the Fund's Board of Directors, including 
the affirmative votes of a majority of the Directors who are not parties to 
the contract or "interested persons" (as defined in the Investment Company 
Act of 1940) of any such party, cast in person at a meeting called for the 
purpose of considering such approval. In addition, the question of 
continuance shall be effected only if approved by the affirmative vote of a 
majority of the outstanding voting securities of the Fund. The agreement is 
automatically terminated if assigned, and may be terminated without penalty 
at any time (1) either by vote of the Board of Directors of the Fund or by 
vote of its outstanding voting securities on 60 days' written notice to the 
Adviser, or (2) by the Adviser upon 90 days' written notice to the Fund. 
    

   The Fund's Board of Directors may, without the approval of shareholders, 
provide for: 

   A. The employment of a new investment adviser pursuant to the terms of a 
new advisory agreement, either as a replacement for an existing adviser or as 
an additional adviser. 

   B. A change in the terms of an advisory agreement. 

                                                                             B-9

<PAGE>

   C. The continued employment of an existing adviser on the same advisory 
contract terms where a contract has been assigned because of a change in 
control of the adviser. 

   Any such change will only be made upon not less than 30 days' prior 
written notice to shareholders, which shall include the information 
concerning the adviser that would have normally been included in a proxy 
statement. 

   
   Because the Adviser provides only investment advisory services to the Fund 
and has no control over the Fund's expenses, the Adviser has not undertaken 
to guarantee expenses of the Fund. The Officers of the Fund have worked out 
alternative arrangements with state authorities which do require an expense 
guarantee. 

   Description of the Adviser. The Adviser is a professional counseling firm 
which manages well diversified stock and bond portfolios for institutional 
clients. As of September 30, 1996 the Adviser provided investment advisory 
services to 212 clients and managed assets with an approximate value of $46.4 
billion. The Adviser's asset allocation strategy was developed by the 
Adviser's co-founder, William Fouse, in 1972, and is used by 84 of its 
clients and accounts for approximately $13.6 billion of the assets that it 
manages. The Adviser is a wholly-owned subsidiary of MBC Investment 
Corporation, which itself is a wholly-owned subsidiary of Mellon Bank 
Corporation. For the fiscal years ended September 30, 1994, September 30, 
1995 and September 30, 1996, the Fund paid approximately $1,785,000, 
$1,954,000 (before a decrease of $131,000 based on performance), and 
$2,691,000 (before a decrease of $515,000 based on performance) respectively, 
to the Adviser for investment advisory services. The basic fee paid to the 
Adviser for the fiscal year ended September 30, 1996 reflects a fee waiver of 
$146,000 during the period October 1, 1995 to March 31, 1996. 
    

                            PORTFOLIO TRANSACTIONS 

   The investment advisory agreement authorizes the Adviser (with the 
approval of the Fund's Board of Directors) to select the brokers or dealers 
that will execute the purchases and sales of portfolio securities for the 
Fund and directs the Adviser to use its best efforts to obtain the best 
available price and most favorable execution as to all transactions for the 
Fund. The Adviser undertakes to execute each investment transaction at a 
price and commission which provides the most favorable total cost or proceeds 
reasonably obtainable under the circumstances. 

   In placing portfolio transactions, the Adviser will use its best judgment 
to choose the broker most capable of providing the brokerage services 
necessary to obtain best available price and most favorable execution. The 
full range and quality of brokerage services available will be considered in 
making these determinations. In those instances where it is reasonably 
determined that more than one broker can offer the brokerage services needed 
to obtain the best available price and most favorable execution, 
consideration may be given to those brokers which supply investment research 
and statistical information and provide other services in addition to 
execution services to the Fund and/or the Adviser. The Adviser considers such 
information useful in the performance of its obligations under the agreement, 
but is unable to determine the amount by which such services may reduce its 
expenses. 

   The investment advisory agreement also incorporates the concepts of 
Section 28(e) of the Securities Exchange Act of 1934 by providing that, 
subject to the approval of the Fund's Board of Directors, the Adviser may 
cause the Fund to pay a broker-dealer which furnishes brokerage and research 
services a higher commission than that which might be charged by another 
broker-dealer for effecting the same transaction; provided that such 
commission is deemed reasonable in terms of either that particular 
transaction or the overall responsibilities of the Adviser to the Fund. 

   Currently, it is the Fund's policy that the Adviser may at times pay 
higher commissions in recognition of brokerage services felt necessary for 
the achievement of better execution of certain securities transactions that 
otherwise might not be available. The Adviser will only pay such higher 
commissions if it believes this to be 


B-10
     
<PAGE>

in the best interest of the Fund. Some brokers or dealers who may receive 
such higher commissions in recognition of brokerage services related to 
execution of securities transactions are also providers of research 
information to the Adviser and/or the Fund. However, the Adviser has informed 
the Fund that it will not pay higher commission rates specifically for the 
purpose of obtaining research services. 

   Since the Fund does not market its shares through intermediary brokers or 
dealers, it is not the Fund's practice to allocate brokerage or principal 
business on the basis of sales of its shares which may be through such firms. 
However, the Fund may place portfolio orders with qualified broker-dealers 
who recommend the Fund to other clients, or who act as agent in the purchase 
of the Fund's shares for their clients, and may, when a number of brokers and 
dealers can provide comparable best price and execution on a particular 
transaction, consider the sale of Fund shares by a broker or dealer in 
selecting among qualified broker-dealers. 

   
   The total brokerage commissions paid by the Fund for the fiscal years 
ended September 30, 1994, September 30, 1995 and September 30, 1996, totaled 
$482,595, $92,177 and $127,528 respectively. 

   Some securities considered for investment by the Fund may also be 
appropriate for other clients served by the Adviser. If purchases or sales of 
securities consistent with the investment policies of the Fund and one or 
more of these other clients serviced by the Adviser are considered at or 
about the same time, transactions in such securities will be allocated among 
the Fund and such other clients in a manner deemed equitable by the Adviser. 
    

DESCRIPTION OF U.S. GOVERNMENT SECURITIES 

   As used in this prospectus, the term "U.S. Government Securities" refers 
to a variety of securities which are issued or guaranteed by the United 
States Treasury, by various agencies of the United States Government, and by 
various instrumentalities which have been established or sponsored by the 
United States Government. The term also refers to "repurchase agreements" 
collateralized by such securities. 

   
   U.S. Treasury Securities are backed by the "full faith and credit" of the 
United States. Securities issued or guaranteed by Federal agencies and U.S. 
Government sponsored instrumentalities may or may not be backed by the full 
faith and credit of the United States. In the case of securities not backed 
by the full faith and credit of the United States, the investor must look 
principally to the agency or instrumentality issuing or guaranteeing the 
obligation for ultimate repayment, and may not be able to assert a claim 
against the United States itself in the event the agency or instrumentality 
does not meet its commitment. 
    

   Some of the U.S. Government agencies that issue or guarantee securities 
include the Export-Import Bank of the United States, Farmers Home 
Administration, Federal Housing Administration, Maritime Administration, 
Small Business Administration, and The Tennessee Valley Authority. 

   An instrumentality of the U.S. Government is a government agency organized 
under Federal charter with government supervision. Instrumentalities issuing 
or guaranteeing securities include, among others, Federal Home Loan Banks, 
the Federal Land Banks, Central Bank for Cooperatives, Federal Intermediate 
Credit Banks, and the Federal National Mortgage Association. 

DESCRIPTION OF REPURCHASE AGREEMENTS 

   Repurchase agreements are transactions by which a person purchases a 
security and simultaneously commits to resell that security to the seller (a 
member bank of the Federal Reserve System or recognized securities dealer) at 
an agreed upon price on an agreed upon date within a number of days (usually 
not more 

                                                                            B-11
    
<PAGE>

than seven) from the date of purchase. The resale price reflects the purchase 
price plus an agreed upon market rate of interest which is unrelated to the 
coupon rate or maturity of the purchased security. A repurchase agreement 
involves the obligation of the seller to pay the agreed upon price, which 
obligation is in effect secured by the value of the underlying security. 

   The use of repurchase agreements involves certain risks. For example, if 
the seller of the agreement defaults on its obligation to repurchase the 
underlying securities at a time when the value of these securities has 
declined, the Portfolio may incur a loss upon disposition of them. If the 
seller of the agreement becomes insolvent and subject to liquidation or 
reorganization under the Bankruptcy Code or other laws, a bankruptcy court 
may determine that the underlying securities are collateral not within the 
control of the Portfolio and therefore subject to sale by the trustee in 
bankruptcy. Finally, it is possible that the Portfolio may not be able to 
substantiate its interest in the underlying securities. While the Fund's 
management acknowledges these risks, it is expected that they can be 
controlled through stringent security selection criteria and careful 
monitoring procedures. 

                              FUTURES CONTRACTS 

   
   The Fund may enter into stock index and fixed-income futures contracts, 
stock index and fixed income options, and options on such futures contracts 
to remain fully invested, to reduce transactions costs. Futures contracts 
provide for the future sale by one party and purchase by another party of a 
specified amount of a specific security or index 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. Assets committed to futures contracts will be 
segregated at the Fund's custodian bank to the extent required by law. 
    

   Although many fixed-income futures contracts call for actual delivery or 
acceptance of the underlying securities at a specified date (stock index 
futures contracts do not permit delivery of securities), the contracts are 
normally 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," 
"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. 

   After a futures contract position is opened, the value of the contract is 
marked to market daily. If the futures contract price changes to the extent 
that the margin on deposit does not satisfy margin requirements, payment of 
additional "variation" margin will be required. Conversely, change in the 
contract value may reduce the required margin, resulting in a repayment of 
excess margin to the contract holder. Variation margin payments are made to 
and from the futures broker for as long as the contract remains open. The 
Fund expects to earn interest income on its margin deposits. 

   Traders in futures contracts may be broadly classified as either "hedgers" 
or "speculators." Hedgers use the futures markets primarily to offset 
unfavorable changes (anticipated or potential) in the value of securities 
currently owned 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 value of the underlying securities. The Fund intends 
to use futures contracts only for bona fide hedging purposes. 

B-12

<PAGE>

   Regulations of the CFTC applicable to the Portfolio require that all of 
its futures transactions constitute bona fide hedging transactions. The 
Portfolio will only sell futures contracts to protect securities it owns 
against price declines or purchase contracts to protect against an increase 
in the price of securities it intends to purchase. As evidence of this 
hedging interest, the 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 
Fund upon sale of open futures contracts. 

RESTRICTIONS ON THE USE OF FUTURES CONTRACTS 

   The Fund 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. 

RISK FACTORS IN FUTURES TRANSACTIONS 

   
   Positions in futures 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 Fund would continue to be 
required to make daily cash payments to maintain its required margin. In such 
situations, if the Fund 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. The inability to close options and futures 
positions also could have an adverse impact on the ability to hedge 
effectively. 
    

   A Fund 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 contracts. As a result, a 
relatively small price movement in a futures contract may result in immediate 
and substantial loss (or 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 Fund also bears 
the risk that the Adviser will incorrectly predict future market trends. 
However, because the futures strategies of the Portfolio are engaged in only 
for hedging purposes, the adviser does not believe that the Fund is subject 
to the risks of loss frequently associated with futures transactions. The 
Fund 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 Fund does involve the risk of 
imperfect or no correlation where the securities underlying futures contracts 
have different maturities than the portfolio securities being hedged. It is 
also possible that the Fund 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 Fund of margin deposits in the event of bankruptcy of 
a broker with whom the Fund has an open position in a futures contract or 
related option. 

   Most futures exchanges limit the amount of fluctuation permitted in some 
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 

                                                                            B-13
<PAGE>

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 

   The Fund is required for Federal income tax purposes to recognize as 
income for each taxable year its net unrealized gains and losses on 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 Fund may affect 
the holding period of such securities and, consequently, the nature of the 
gain or loss on such securities upon disposition. The Fund may be required to 
defer the recognition of losses on futures contracts to the extent of any 
unrecognized gains on related positions held by the Fund. 

   
   In order for the Fund 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, and gains from the sale of 
securities or foreign currencies, or other income derived with respect to its 
business of investing in such securities or currencies. 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 Fund's annual gross 
income. It is anticipated that any net gain realized from the closing out of 
futures contracts will be considered gain from the sale of securities and 
therefore be qualifying income for purposes of the 90% requirement. In order 
to avoid realizing excessive gains on securities held less than three months, 
the Fund 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 Fund's fiscal year and which are 
recognized for tax purposes, will not be considered gains on securities held 
less than three months for the purpose of the 30% test. 

   The Fund will distribute to shareholders annually any net capital gains 
which have been recognized for Federal income tax purposes including 
unrealized gains at the end of the Fund's fiscal year on futures 
transactions. Such distributions will be combined with distributions of 
capital gains realized on the Fund's other investments and shareholders will 
be advised on the nature of the payments. 
    
B-14
<PAGE>

                                   GLOSSARY 

a. Historical Market Returns -- Total returns of broad asset class 
   benchmarks. As examples, the returns of well-known benchmarks for domestic 
   stocks, bonds, and money market instruments are given below. 
   
<TABLE>
<CAPTION>
                                                                                Money Market 
                  Asset Class       Common Stocks             Bonds              Instruments 
                                  Standard & Poor's 
                                 500 Composite Stock     Lehman Brothers           90 Day 
                                                                                U.S. Treasury 
                   Benchmark         Price Index       Long Treasury Index          Bills 
                 -------------   -------------------    -------------------   ------------------ 
                     <S>              <C>                     <C>                   <C>        
                     1979               18.4                   -0.5                 10.0 
                     1980               32.4                   -2.9                 11.4 
                     1981               -4.9                    0.4                 14.7 
                     1982               21.5                   41.8                 10.9 
                     1983               22.5                    2.0                  9.0 
                     1984                6.2                   14.8                 10.0 
                     1985               31.6                   31.6                  7.8 
                     1986               18.6                   24.1                  6.2 
                     1987                5.2                   -2.7                  5.9 
                     1988               16.5                    9.2                  6.8 
                     1989               31.6                   18.9                  8.6 
                     1990               -3.1                    6.3                  7.9 
                     1991               30.4                   18.5                  5.8 
                     1992                7.6                    8.0                  3.6 
                     1993               10.1                   17.3                  3.1 
                     1994                1.3                   -7.6                  4.2 
                     1995               37.6                   30.7                  5.8 
                     1996(9/30)         13.5                   -5.4                  3.9 
</TABLE>

b. Asset Allocation -- Asset allocation -- in its most generic sense -- is 
   the allotment of an investor's monies to broad asset classes such as 
   stocks or bonds. Investors establish percentage allocation guidelines for 
   stocks, bonds, and money market instruments which are consistent with 
   their particular long-term investment needs. These needs will include 
   current income, potential growth in capital, and willingness to accept 
   risk. 

   In implementing their asset allocation targets, some investors attempt to 
maintain a stable mix -- such as 50% stocks and 50% bonds -- while others 
will actively manage the stock/bond mix in pursuit of higher returns, lower 
risk, or other investment objectives. The key difference between investors 
who maintain a stable mix and those who actively change allocations is their 
willingness to forecast the risks and returns of individual asset classes, 
their forecasting abilities, and their comfort in making investment decisions 
based upon such forecasts. Historically, investors who actively managed the 
mix based upon conjecture have often underperformed both investors with 
relatively stable allocations and investors with logical, disciplined methods 
for assessing relative value and risk. Institutional investors commonly refer 
to active asset allocation approaches which are based upon disciplined 
methodologies as tactical asset allocation. 
    

                             FINANCIAL STATEMENTS 

   
   The Fund's financial statements, including the financial highlights for 
each of the five fiscal years in the period ended September 30, 1996, 
appearing in the Fund's 1996 Annual Report to Shareholders and the report 
thereon of Price Waterhouse LLP, independent accountants, also appearing 
therein, are incorporated by reference into this Statement of Additional 
Information. The Fund's 1996 Annual Report to Shareholders is enclosed with 
this Statement of Additional Information. 
    
                                                                            B-15
    
<PAGE>

                                    PART C 
                     VANGUARD ASSET ALLOCATION FUND, INC. 
                              OTHER INFORMATION 

ITEM 24. FINANCIAL STATEMENTS AND EXHIBITS 

   (a) Financial Statements 

   
   The Registrant's audited financial statements for the year ended September 
30, 1996, including Price Waterhouse LLP's report thereon, are incorporated 
by reference, in the Statement of Additional Information, from the 
Registrant's 1996 Annual Report which has been filed with the Commission as 
an Exhibit to this Registration Statement. The financial statements included 
in the Annual Report are: 

        1. Statement of Net Assets as of September 30, 1996. 
        2. Statement of Operations for the year ended September 30, 1996. 
        3. Statement of Changes in Net Assets for the years ended September 
           30, 1995 and September 30, 1996. 
        4. Financial Highlights for each of the five years in the period ended 
           September 30, 1996. 
        5. Notes to Financial Statements. 
        6. Report of Independent Accountants. 

   (b) Exhibits 

       11. Consent of Independent Accountants 
       12. Financial Statements -- See (a) above 
       16. Schedule for computation of performance quotations 
       27. Financial Data Schedule 
    

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

   Registrant is not controlled by or under common control with any person. 
The officers of the Registrant, the investment companies in The Vanguard 
Group of Investment Companies and The Vanguard Group, Inc. are identical. 
Reference is made to the caption "Management of the Fund" in the Prospectus 
constituting Part A and "Management of the Fund" in the Statement of 
Additional Information constituting Part B of this Registration Statement. 

ITEM 26. NUMBER OF HOLDERS OF SECURITIES 

   
   75,126 (9/30/96). 
    

ITEM 27. INDEMNIFICATION 

   Reference is made to Article XI of Registrant's Articles of Incorporation. 

   
   Insofar as indemnification for liability arising under the Securities Act 
of 1933 may be permitted to directors, officers and controlling persons of 
the registrant pursuant to the foregoing provisions, or otherwise, the 
registrant has been advised that in the opinion of the Securities and 
Exchange Commission such indemnification is against public policy as 
expressed in the Act and is, therefore, unenforceable. In the event that a 
claim for indemnification against such liabilities (other than the payment by 
the registrant of expenses incurred or paid by a director, officer or 
controlling person of the registrant in the successful defense of any 
    
                                                                             C-1
   
<PAGE>

action, suit or proceeding) is asserted by such director, officer or 
controlling person in connection with the securities being registered, the 
registrant will, unless in the opinion of its counsel the matter has been 
settled by controlling precedent, submit to a court of appropriate 
jurisdiction the question whether such indemnification by it is against 
public policy as expressed in the Act and will be governed by the final 
adjudication of such issue. 

ITEM 28. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER 

   
   The officers of Mellon Capital Management Corporation are as follows: 
    William Fouse, Chairman 
    Thomas Loeb, Chairman, Executive Committee and Chief Executive Officer 
    Brenda Joyce Oakley, Executive Vice President and Chief Administrative 
    Officer 
    Mary Catherine Shouse, Executive Vice President 
    Thomas Bernard Hazuka, Executive Vice President and Chief Investment 
    Officer 
    

ITEM 29. PRINCIPAL UNDERWRITERS 

   (a) None. 

   (b) Not Applicable. 

ITEM 30. LOCATION OF ACCOUNTS AND RECORDS 

   The books, accounts and other documents required by Section 31(a) under 
the Investment Company Act and the rules promulgated thereunder will be 
maintained in the physical possession of Registrant; Registrant's Transfer 
Agent, The Vanguard Group, Inc. c/o The Vanguard Financial Center, Valley 
Forge, Pennsylvania 19482; and the Registrant's Custodian, State Street Bank 
and Trust Company, Boston, Mass. 

ITEM 31. MANAGEMENT SERVICES 

   
   Other than the Amended and Restated Funds' Service Agreement with The 
Vanguard Group, Inc. which has been previously filed as Exhibit 9 and 
described in Part B hereof under "Management of the Fund;" the Registrant is 
not a party to any management-related service contract. 
    

ITEM 32. UNDERTAKINGS 

   
   Registrant hereby undertakes to comply with the provisions of section 
16(c) of the Investment Company Act in regard to shareholders' rights to call 
a meeting of shareholders for the purpose of voting on the removal of 
directors and to assist in shareholder communications in such matters, to the 
extent required by law. 
    

   Registrant hereby undertakes to provide an Annual Report to Shareholders 
or prospective investors, free of charge, upon request. 

C-2

<PAGE>

   
                                  SIGNATURES 

   Pursuant to the requirements of the Securities Act of 1933 and the 
Investment Company Act of 1940, the Registrant hereby certifies that it meets 
the requirements for effectiveness of this Registration Statement pursuant to 
paragraph (b) of Rule 485 under the Securities Act of 1933 and that it has 
duly caused this Post-Effective Amendment to this Registration Statement to 
be signed on its behalf by the undersigned, thereunto duly authorized, in the 
Town of Valley Forge and the Commonwealth of Pennsylvania on the 10th day of 
January, 1997. 

<TABLE>
<CAPTION>
         Signatures                          Title                          Date 
 --------------------------   ------------------------------------   ------------------- 
<S>                          <C>                                     <C>
BY:      (Signature)         John C. Bogle*, Chairman                 January 10, 1997 
  -------------------------   of the Board and Director 
    (Raymond J. Klapinsky)      

BY:      (Signature)         John J. Brennan*,                        January 10, 1997 
  -------------------------   President, Chief Executive 
  (Raymond J. Klapinsky)      Officer and Director 

BY:      (Signature)         Robert E. Cawthorn*,                     January 10, 1997 
  -------------------------   Director 
  (Raymond J. Klapinsky)      

BY:      (Signature)          Barbara B. Hauptfuhrer*,                 January 10, 1997 
  -------------------------    Director
  (Raymond J. Klapinsky)     

BY:      (Signature)         Burton G. Malkiel*, Director             January 10, 1997 
  ------------------------- 
  (Raymond J. Klapinsky) 

BY:      (Signature)         Bruce K. MacLaury,* Director             January 10, 1997 
  ------------------------- 
  (Raymond J. Klapinsky) 

BY:      (Signature)         Alfred M. Rankin, Jr.*, Director         January 10, 1997 
  ------------------------- 
  (Raymond J. Klapinsky) 

BY:      (Signature)         John C. Sawhill*, Director               January 10, 1997 
  ------------------------- 
  (Raymond J. Klapinsky) 

BY:      (Signauture)        James O. Welch, Jr.*, Director           January 10, 1997 
  ------------------------- 
  (Raymond J. Klapinsky) 

BY:      (Signature)         J. Lawrence Wilson*, Director            January 10, 1997 
  ------------------------- 
  (Raymond J. Klapinsky) 

BY:      (Signature)         Richard F. Hyland*, Treasurer            January 10, 1997 
  -------------------------  and Principal Financial 
  (Raymond J. Klapinsky)     Officer and Accounting 
                             Officer 
</TABLE>
    
- ------ 
*By Power of Attorney. See 1933 Act File No. 2-14336, January 23, 1990. 
Incorporated by Reference. 
<PAGE>

                     VANGUARD ASSET ALLOCATION FUND, INC. 
                              INDEX TO EXHIBITS 

Consent of Independent Accountants................................   EX-99.B11 
Schedule for computation of performance quotations................   EX-99.B16 
Financial Data Schedule...........................................   EX-27 


<PAGE>

                                                                     EX-99.B11 

                      CONSENT OF INDEPENDENT ACCOUNTANTS 
   
   We hereby consent to the incorporation by reference in the Prospectus and 
the Statement of Additional Information constituting parts of this 
Post-Effective Amendment No. 11 to the Registration Statement on Form N-1A 
(the "Registration Statement") of our report dated October 31, 1996, relating 
to the financial statements and financial highlights appearing in the 
September 30, 1996 Annual Report to Shareholders of Vanguard Asset Allocation 
Fund, which are also incorporated by reference into the Registration 
Statement. We also consent to the references to us under the headings 
"Financial Highlights" and "General Information" in the Prospectus and under 
the heading "Financial Statements" in the Statement of Additional 
Information. 

    
PRICE WATERHOUSE LLP 

   
Philadelphia, PA 
January 9, 1997 
    


<PAGE>

                                                                     EX-99.B16 

              SCHEDULE FOR COMPUTATION OF PERFORMANCE QUOTATIONS 

   
1. Average Annual Total Return (As of September 30, 1996) 
     P (1 + T)(n) = ERV 
   Where:   P = a hypothetical initial payment of $1,000 
            T = average annual total return 
            N = number of years 
   ERV = ending redeemable value at the end of the period 
   EXAMPLE: One Year 
       P = $1,000 
       T = +15.27% 
       N = 1 
ERV = $1,152.70 
   Five Year 
       P = $1,000 
       T = +13.45% 
       N = 5 
    ERV = $1,879.11 
   Since inception 
       P = $1,000 
       T = +14.06%* 
       N = * 
    ERV = $2,829.51* 
- ------ 
* Since Inception, November 3, 1988. 
    


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000836906
<NAME> VANGUARD ASSET ALLOCATION FUND, INC.
<MULTIPLIER> 1,000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1996
<PERIOD-START>                             OCT-01-1995
<PERIOD-END>                               SEP-30-1996
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                        2,039,787
<INVESTMENTS-AT-VALUE>                       2,323,623
<RECEIVABLES>                                   54,363
<ASSETS-OTHER>                                     219
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               2,378,205
<PAYABLE-FOR-SECURITIES>                           748
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       36,272
<TOTAL-LIABILITIES>                             37,020
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     1,896,408
<SHARES-COMMON-STOCK>                          128,162
<SHARES-COMMON-PRIOR>                           93,574
<ACCUMULATED-NII-CURRENT>                       39,451
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        111,714
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       293,612
<NET-ASSETS>                                 2,341,185
<DIVIDEND-INCOME>                               17,924
<INTEREST-INCOME>                               73,771
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                   9,309
<NET-INVESTMENT-INCOME>                         82,386
<REALIZED-GAINS-CURRENT>                       130,567
<APPREC-INCREASE-CURRENT>                       57,983
<NET-CHANGE-FROM-OPS>                          270,936
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       68,953
<DISTRIBUTIONS-OF-GAINS>                        59,350
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         46,473
<NUMBER-OF-SHARES-REDEEMED>                     18,936
<SHARES-REINVESTED>                              7,051
<NET-CHANGE-IN-ASSETS>                         747,806
<ACCUMULATED-NII-PRIOR>                         26,018
<ACCUMULATED-GAINS-PRIOR>                       40,497
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            2,176
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 82,386
<AVERAGE-NET-ASSETS>                         1,976,043
<PER-SHARE-NAV-BEGIN>                            17.03
<PER-SHARE-NII>                                   0.69
<PER-SHARE-GAIN-APPREC>                           1.82
<PER-SHARE-DIVIDEND>                              0.66
<PER-SHARE-DISTRIBUTIONS>                         0.61
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              18.27
<EXPENSE-RATIO>                                   0.47
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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