VANGUARD ASSET ALLOCATION FUND INC
497, 1997-01-21
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===============================================================================
 Vanguard 
  Asset 
Allocation 
  Fund                                          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 open-end
OBJECTIVE &   diversified investment company that seeks to maximize total     
POLICIES      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 and  
ACCOUNT       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>
<S>                            <C>         <C>                                 <C>     <C>                               <C>

                               Page                                            Page                                       Page
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.
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<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%
                                                          0.02
              Miscellaneous Expenses  .............      ------
                                                                     0.04
              Total Other Expenses  ...............                 ------
                  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
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<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.

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YIELD AND     From time to time the Fund may advertise its yield and total     
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.                     
                                                                                
              Inaccordance 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


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INVESTMENT               The objective of the Fund is to maximize total return 
OBJECTIVE                (i.e., capital change plus income) while exhibiting   
The Fund seeks to        less investment risk than a portfolio consisting      
maximize total return    entirely of common stocks. There is no assurance that 
                         the Fund will achieve its stated objective.           
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INVESTMENT                The Fund will allocate its assets among a common stock
POLICIES                  portfolio, a bond portfolio, and money market
                          instruments. The Fund's adviser, Mellon Capital
The Fund invests in       Management, allocates the Fund's assets among stocks,
stocks, bonds and         bonds and money market instruments in proportions
money market              which reflect the anticipated returns and risks of
instruments in            each asset class. The estimates of return and risk are
varying proportions       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.

                          Inestimating 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.
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4
<PAGE>


   
INVESTMENT RISKS         Depending on the adviser's allocation of the Fund's  
The Fund is subject to   assets among stocks, bonds and cash reserves,        
stock and bond market    investors in the Fund may be exposed to the market   
risk                     risk of common stocks and bonds.                     

                          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 1996, as measured by the Standard &
                          Poor's 500 Composite Stock Price Index:

                          AVERAGE ANNUAL U.S. STOCK MARKET RETURNS (1926-1996)
                                       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    +12.7       +10.4      +10.8       +10.8
   
                          As shown, from 1926 to 1996, U.S. common stocks as
                          measured by the Index provided an average annual total
                          return (capital appreciation plus dividend income) for
                          10 years, of +10.8%. 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 fail
to anticipate market
advances or declines

                          Investors should also be aware that the investment
                          results of the Fund depend upon the adviser's ability
                          to anticipate correctly the relative performance and
                          risk of stocks, bonds and money market instruments.
                          Historical evidence indicates 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.
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WHO SHOULD                The Fund is designed for investors seeking maximum
INVEST                    total return through an investment vehicle which
Long-term investors       provides an actively managed mix of stocks, bonds and
seeking maximum           money market instruments. Because the Fund can and may
total return              have a large percentage of its portfolio invested in
                          common stocks, investors in the Fund should be willing
                          to accept the risk of an all-stock portfolio,
                          including the potential for sudden, 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.
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6
<PAGE>

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

The Fund may invest       The Fund invests in stocks, bonds and money market
in stocks, bonds and      instruments in varying proportions. For common stocks,
money market              the Fund will invest in a diversified portfolio of
instruments               common stocks selected to parallel the investment
                          performance of the S&P 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
its securities            qualified 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 borrow       The Fund may borrow money, subject to the limitations 
money under unusual       set forth below, for temporary or emergency purposes, 
circumstances             including the meeting of redemption requests which    
                          might otherwise require selling securities at a loss. 

                                                               
Portfolio turnover        Due to the active asset allocation approach employed  
may be high               by the 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 under the Internal Revenue Code, it may be       
                          necessary for the Fund to modify its investment       
                          strategy and refrain from securities sales that it    
                          would otherwise make. The "short-short" test provides 
                          that 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 Investing      Derivatives are instruments whose values are linked to
                          or 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
futures contracts         and options to a limited extent. Specifically, the
and options               Fund may enter 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
certain risks             between 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

 

8

<PAGE>

                          in a futures contract may result in immediate 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.
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INVESTMENT                The Fund has adopted certain limitations in an attempt
  LIMITATIONS             to reduce its exposure to specific situations. Some of
                          these limitations are that the Fund will not:         
                          
The Fund has adopted      (a) with respect to 75% of the value of its total     
certain fundamental       assets, purchase the securities of any issuer (except 
limitations               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;                                          
=
                          (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
THE FUND                  Investment Companies, a family of more than 30
Vanguard                  investment companies with more than 90 distinct
administers and           investment portfolios and total assets in excess of
distributes the Fund      $230 billion. 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 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
ADVISER                   Corporation, 595 Market St., Suite 3000, San
Mellon Capital            Francisco, CA 94105, as its investment adviser. Under
Management                an investment advisory agreement dated January 15,
manages the Fund's        1996, the adviser manages the investment and
investments               reinvestment of the assets of the Fund and
                          continuously reviews, supervises and administers the
                          Fund's investment program. The adviser discharges its
                          responsibilities subject 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 cumulative investment performance
                          for the thirty-six months preceding the end of the
                          quarter is at least six percentage

10


<PAGE>

                          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 on page 12 provides investment results for
  RECORD                  the Fund for 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 
CAPITAL GAINS            ordinary income. Net capital gains distributions, if 
AND TAXES                any, will be distributed annually.                   

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

                          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. Also, keep in mind that if you
                          purchase shares in the Fund shortly

12 


<PAGE>

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

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

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



                                                                              13
<PAGE>

                          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,
ACCOUNT AND               either by mail or wire. Simply complete and return an
PURCHASING                Account Registration Form and any required legal
SHARES                    documentation, indicating the amount you wish to
                          invest. Your purchase must be equal to or greater than
                          the $3,000 minimum initial investment requirement
                          ($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 for IRAs, 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
Restrictions                 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 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 
Investments

                          Subsequent investments to regular accounts may be made
                          by mail ($100 minimum), wire ($1,000 minimum),
                          exchange from another Vanguard Fund account, or
                          Vanguard Fund Express. Subsequent investments to
                          Individual Retirement Accounts may be made by mail
                          ($100 minimum) or exchange from another Vanguard Fund
                          account. In some instances, contributions may be made
                          by wire or Vanguard Fund Express. Please call us for
                          more information on these options.
    
                          -----------------------------------------------------

                                                                              15
<PAGE>
<TABLE>
<CAPTION>

                                                                               ADDITIONAL INVESTMENTS
                                  NEW ACCOUNT                                         TO EXISTING

<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 remittance     
Registration Form            The Vanguard Group-78 and                       form attached to your Fund     
                             mail to:                                        confirmation statements.       
                                                                             Please make your check payable 
                             Vanguard Financial Center                       to The Vanguard Group-78,      
                             P.O. Box 2600                                   write your account number on   
                             Valley Forge, PA 19487                          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 request 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.              
Money should be          ABA 031000011                  
wired to:                CORESTATES NO. 0101 9897       
                         ATTN VANGUARD                  
Before Wiring            VANGUARD ASSET ALLOCATION FUND 
                         ACCOUNT NUMBER                 
Please contact           ACCOUNT REGISTRATION           
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
Exchange (from a          by making an exchange from another Vanguard Fund     
Vanguard account)         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
Fund Express              money from your bank account to your Vanguard account 
                          at your request. Or if you choose the Automatic       
Special Purchase and      Investment option, money will be moved from your bank 
 Automatic Investment     account to your Vanguard account on the schedule      
                          (monthly, bimonthly [every other month], 

16
<PAGE>

                          quarterly, semiannually or yearly) you select. To
                          establish these Fund Express options, please provide
                          the appropriate information on the Account
                          Registration Form. We will send you a confirmation of
                          your Fund Express service; please wait 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 net capital gains and dividend income to
Investors should ask      Fund shareholders. These distributions are made to all
about the timing of       shareholders who own Fund shares as of the
capital gains and         distribution's record date, regardless of how long the
dividend                  shares have been owned. Purchasing shares just prior
distributions             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        
INFORMATION               services on your account is to select the options you 
Optional Services         desire when you complete your Account Registration    
                          Form. If you wish to add 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  
Purchases                 registered broker-dealer or investment adviser, the  
                          broker-dealer or adviser may charge a service fee.   

Cancelling Trades         The Fund will not cancel any trade (e.g., a purchase,
                          exchange, or redemption) believed to be authentic,
                          received in writing or by telephone, once the trade
                          has been received.

Electronic                You may receive a prospectus for the Fund or any of 
Prospectus                the Vanguard Funds in an electronic format. Please    
Delivery                  call 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
CREDITED                  Funds 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
  SHARES                  account by 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, PA 19482. (For express or

                                      

                                                                              18
<PAGE>

                          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

                          Good Order means that the request includes the
                          following:

                          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 Telephone      To sell shares by telephone, you or your
                          pre-authorized representative may call our Client
                          Services Department at 1-800-662-2739. The proceeds
                          will be sent to you by mail. Please 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   
Express                   option, money will be automatically moved from your   
                          Vanguard Fund account to your bank account according  
                          to the schedule you have selected. The Special        
Automatic                 Redemption option lets you move money from your       
Withdrawal                Vanguard account to your bank account on your request.
& Special Redemption      You may elect Fund Express on the Account Registration
                          Form or call our Investor Information Department at   
                          1-800-662-7447 for a Fund Express application.  
                          -----------------------------------------------------
Selling By Exchange       You may sell shares by making an exchange to another
                          Vanguard Fund account. Please see "Exchanging Your
                          Shares" for details.
                          -----------------------------------------------------
Important                 Shares purchased by check or Fund Express may be    
Redemption                redeemed at any time. However, your redemption      
Information               proceeds will not be paid until payment for the     
                          purchase is collected, which may take up to ten     
                          calendar days.                                      
                          -----------------------------------------------------
Delivery of               Redemption requests received by telephone prior to the
Redemption Proceeds       close of regular trading on the New York Stock
                          Exchange (generally, 4:00 p.m. Eastern time) are
                          processed on the day of receipt and the redemption
                          proceeds are normally sent on the following business
                          day.

                                                                             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 Average        If you make a redemption from a qualifying account,
Cost Statement            Vanguard will send you an Average Cost Statement which
                          provides you with the 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
Account Balance           annual fee from non-retirement accounts with balances
Requirement               falling below $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 the Fund's net asset
                          value).
- -------------------------------------------------------------------------------
    
EXCHANGING YOUR           Should your investment goals change, you may exchange
SHARES                    your shares of Vanguard Asset Allocation Fund for
                          those of other available Vanguard Funds.
Exchanging by             
Telephone                 In addition to the details below, please see
                          "Important Information About Telephone Transactions."
Call Client Services      
(1-800-662-2739)          When exchanging shares by telephone, please have ready
                          the Fund name, account number, Social Security number
                          or Employer Identification number listed


20

<PAGE>

                          on the account, and the exact 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 Mail        Please be sure to include on your exchange request the
                          name 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 Exchange        Before you make an exchange, you should consider the
Information               following:

                          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
PRIVILEGE                 afford shareholders a way to speculate on short-term
LIMITATIONS               movements in the market. Accordingly, in order to
                          prevent excessive use of the exchange privilege that
                          may potentially disrupt the management of the Fund and
                          increase transaction costs, the Fund has established a
                          policy of limiting excessive exchange activity.

                          Exchange activity generally will not be deemed
                          excessive if limited to two substantive exchange
                          redemptions (at least 30 days apart) from the Fund
                          during any twelve month period. "Substantive" means
                          either a dollar amount large enough to have a negative
                          impact on the Fund or a series of movements between
                          Vanguard portfolios. 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
INFORMATION               redemptions) and exchanges by telephone is
ABOUT TELEPHONE           automatically established on your account unless you
TRANSACTIONS              request in writing that telephone transactions on your
                          account not be permitted.

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

                          1. Security Check. To request a transaction by
                             telephone, the caller must know (i) the name of the
                             Portfolio; (ii) the 10-digit account number; (iii)
                             the exact name 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.
- --------------------------------------------------------------------------------
22
    
<PAGE>

TRANSFERRING              You may transfer the registration of any of your Fund
REGISTRATION              shares to another person by completing a transfer form
                          and sending it to: Vanguard Financial Center, P.O. Box
                          1110, Valley Forge, PA 19482, 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
REPORTS                   time you initiate a transaction in your account,
                          except for checkwriting redemptions from Vanguard
                          money market accounts. You will also receive a
                          comprehensive account statement at the end of each
                          calendar quarter. The fourth-quarter statement will be
                          a year- end statement, listing all transaction
                          activity for the entire calendar year.

                          Vanguard's Average Cost Statement provides you with
                          the average cost of shares redeemed from your account
                          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,  
  SERVICES                please call our Investor Information Department at 
                          1-800-662-7447.                                    
                          
Vanguard Direct           With Vanguard's Direct Deposit Service, most U.S.     
Deposit Service           Government checks (including Social Security and      
                          military pension checks) and private payroll checks   
                          may be automatically deposited into your Vanguard Fund
                          account. Separate brochures and forms are available   
                          for direct deposit of U.S. Government and private     
                          payroll checks.                                       

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

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

                          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
Express                   your dividends and/or capital gains distributions
                          automatically from your Fund account, one business day
                          after the Fund's payable date, to your account at a
                          bank, savings and loan association, or 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
Tele-Account              service 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  
Keyword: vanguard         your 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     
World Wide Web            offering news and information about Vanguard Funds and
http://www.vanguard.com   services, as well as interactive, easy-to-use  
                          investment planning tools.   
- -------------------------------------------------------------------------------

24
<PAGE>









                     (This page intentionally left blank.)

                                    
<PAGE>




      Vanguard
       Asset
     Allocation
        Fund



The Vanguard Group 
Vanguard Financial Center
P.O. Box 2600
Valley Forge, PA 19482

Investor Information
  Department:
1-800-662-7447  (SHIP)


Client Services
  Department:
1-800-662-2739  (CREW)


Tele-Account for
  24-Hour Access:
1-800-662-6273 (ON-BOARD)


Telecommunication Service
  for the Hearing-impaired:
1-800-662-2738



Transfer Agent:
The Vanguard Group, Inc.
Vanguard Financial Center
Valley Forge, PA 19482

<PAGE>

           Vanguard
             Asset
          Allocation
             Fund



     P R O S P E C T U S


       JANUARY 17, 1997







         A member of
    THE VANGUARD GROUP(R)





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 

<TABLE>
<CAPTION>
                                                          Page 
                                                      -------- 
<S>                                                   <C>                <C>
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 
</TABLE>

                            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. 
<PAGE>

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: 

<TABLE>
<CAPTION>
             Net Assets                                Rate        
             -------------------                      ------- 
            <S>                                       <C>                    
            First $100 million .                       .200% 
            Next $900 million  .                       .150% 
            Next $500 million  .                       .125% 
            Over $1.5 billion  .                       .100% 
</TABLE>

   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 
                   Benchmark         Price Index       Long Treasury Index   U.S. Treasury Bills 
                 -------------   -------------------    -------------------   ------------------- 
<S>                   <C>              <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











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