VANGUARD MORGAN GROWTH FUND INC
497, 1994-05-02
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(LOGO)                                           A Member of The Vanguard Group
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PROSPECTUS--APRIL 27, 1994
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NEW ACCOUNT INFORMATION: INVESTOR INFORMATION DEPARTMENT--1-800-662-7447 (SHIP)
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SHAREHOLDER ACCOUNT SERVICES: CLIENT SERVICES DEPARTMENT--1-800-662-2739 (CREW)
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<S>                         <C>
INVESTMENT                  Vanguard/Morgan Growth Fund, Inc. (the "Fund") is an open-end diversified
OBJECTIVE                   investment company that seeks to provide long-term growth of capital. The Fund
AND POLICIES                invests primarily in common stocks. Dividend income is incidental to this
                            objective. There is no assurance that the Fund will achieve its stated
                            objective.
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OPENING AN                  To open a regular (non-retirement) account, please complete and return the
ACCOUNT                     Account Registration Form. If you need assistance in completing this Form,
                            please call our Investor Information Department. To open an Individual
                            Retirement Account (IRA), please use a Vanguard IRA Adoption Agreement. To
                            obtain a copy of this form, call 1-800-662-7447, Monday through Friday, from
                            8:00 a.m. to 8:00 p.m. (Eastern time). The minimum initial investment is $3,000
                            ($500 for Individual Retirement Accounts and Uniform Gifts/Transfers to Minors
                            Act accounts). The Fund is offered on a no-load basis (i.e., there are no sales
                            commissions or 12b-1 fees). However, the Fund incurs expenses for investment
                            advisory, management, administrative, and distribution services.
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ABOUT THIS                  This Prospectus is designed to set forth concisely the information you should
PROSPECTUS                  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. This Statement is dated April 27, 1994 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
 
   
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<S>                                       <C>                                       <C>
                                   Page                                      Page                                      Page
Fund Expenses ...................   2     Investment Limitations ...........   8     SHAREHOLDER GUIDE
Financial Highlights ............   2     Management of the Fund ...........   8     Opening an Account and
Yield and Total Return ..........   3     Investment Advisers ..............   9     Purchasing Shares ...............  16
        FUND INFORMATION                  Performance Record ...............  12     When Your Account Will
Investment Objective ............   4     Dividends, Capital Gains                   Be Credited .....................  19
Investment Policies .............   4     and Taxes ........................  13     Selling Your Shares .............  19
Investment Risks ................   4     The Share Price of the Fund ......  14     Exchanging Your Shares ..........  21
Who Should Invest ...............   5     General Information ..............  15     Important Information About
Implementation of Policies ......   6                                                Telephone Transactions  .........  22
                                                                                     Transferring Registration .......  23
                                                                                     Other Vanguard Services .........  23
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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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<S>                       <C>
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 1993 fiscal year.
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<TABLE>
<CAPTION>
                                                   SHAREHOLDER TRANSACTION EXPENSES
                                <S>                                                    <C>      <C>
                                ----------------------------------------------------------------------
                                Sales Load Imposed on Purchases...............................  None
                                Sales Load Imposed on Reinvested Dividends....................  None
                                Redemption Fees...............................................  None
                                Exchange Fees.................................................  None
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<TABLE>
<CAPTION>
                                                    ANNUAL FUND OPERATING EXPENSES
                                <S>                                                    <C>      <C>
                                ----------------------------------------------------------------------
                                Management & Administrative Expenses..........................  0.29%
                                Investment Advisory Fees......................................  0.15
                                12b-1 Fees....................................................  None
                                Other Expenses
                                  Distribution Costs.................................  0.02%
                                  Miscellaneous Expenses.............................  0.03
                                                                                       -----
                                Total Other Expenses..........................................  0.05
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                                         TOTAL OPERATING EXPENSES.............................  0.49%
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                          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.
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<CAPTION>                                                                                        
                                     1 YEAR     3 YEARS     5 YEARS     10 YEARS             
                                     -------    --------    --------    ---------            
                                     <S>        <C>         <C>         <C>                  
                                      $5         $16         $27          $62               
                                                                                
                          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 for a share outstanding throughout
HIGHLIGHTS                each period, insofar as they relate to each of the five years in the
                          period ended December 31, 1993, have been audited by Price Waterhouse,
                          independent accountants, whose report thereon was unqualified. This
                          information should be read in conjunction with the Fund's financial
                          statements and notes thereto which are incorporated by reference in the
                          Statement of Additional Information and in this Prospectus, and which
                          appear, along with the report of Price Waterhouse, in the Fund's 1993
                          Annual Report to the Shareholders. For a more complete discussion of
                          the Fund's performance, please see the Fund's 1993 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.

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<CAPTION>
                                                  YEAR ENDED DECEMBER 31,
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                            1993      1992      1991      1990      1989      1988      1987      1986      1985      1984
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<S>                       <C>       <C>      <C>       <C>       <C>        <C>       <C>      <C>       <C>       <C>
NET ASSET VALUE,
  BEGINNING OF YEAR.....  $12.65    $12.20    $10.40    $11.72    $10.27    $ 9.39    $11.50    $13.82    $11.45    $13.84
                          ------    ------    ------    ------    ------    ------    ------    ------    ------    ------
INVESTMENT OPERATIONS
  Net Investment
    Income..............     .18       .18       .29       .32       .28       .25       .23       .21       .23       .25
  Net Realized and
    Unrealized
    Gain (Loss) on
    Investments.........     .71       .97      2.66      (.50)     2.04      1.85       .31       .78      2.99      (.94)
                          ------    ------    ------    ------    ------    ------    ------    ------    ------    ------
    TOTAL FROM
      INVESTMENT
      OPERATIONS........     .89      1.15      2.95      (.18)     2.32      2.10       .54       .99      3.22      (.69)
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DISTRIBUTIONS
  Dividends from Net
    Investment Income...    (.18)     (.18)     (.29)     (.34)     (.28)     (.24)     (.20)     (.43)     (.25)     (.31)
  Distributions from
    Realized Capital
    Gains...............   (1.35)     (.52)     (.86)     (.80)     (.59)     (.98)    (2.45)    (2.88)     (.60)    (1.39)
                          ------    ------    ------    ------    ------    ------    ------    ------    ------    ------
    TOTAL
      DISTRIBUTIONS.....   (1.53)     (.70)    (1.15)    (1.14)     (.87)    (1.22)    (2.65)    (3.31)     (.85)    (1.70)
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NET ASSET VALUE, END OF YEAR... $12.01 $12.65 $12.20    $10.40    $11.72    $10.27    $ 9.39    $11.50    $13.82    $11.45
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TOTAL RETURN............    7.32%     9.54%    29.33%    (1.51)%   22.66%    22.34%     5.02%     7.83%    30.29%    (6.06)%
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RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Year
  (Millions)............  $1,135    $1,116      $957      $697      $733      $622      $538      $594      $665      $468
Ratio of Expenses to
  Average
  Net Assets............     .49%      .48%      .46%      .55%      .51%      .55%      .46%      .54%      .60%      .68%
Ratio of Net Investment
  Income to Average Net
  Assets................    1.36%     1.51%     2.36%     2.77%     2.38%     2.20%     1.52%     1.49%     1.96%     2.51%
Portfolio Turnover
  Rate..................      72%       64%       52%       73%       27%       32%       43%       31%       42%       38%
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<S>                       <C>
YIELD AND                 From time-to-time the Fund may advertise its yield and total return.
TOTAL RETURN              Both yield and total return figures are based on historical earnings
                          and are not intended to indicate future performance. The "total return"
                          of the Fund refers to the average annual compounded rates of return
                          over one-, five-and ten-year periods or for the life of the Fund (as
                          stated in the advertisement) that would equate an initial amount
                          invested at the beginning of a stated period to the ending redeemable
                          value of the investment, assuming the reinvestment of all dividend and
                          capital gains distributions.
                          The "30-day yield" of the Fund is calculated by dividing 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 net investment income earned over 30 days is compounded monthly
                          for six months and then annualized. Methods used to calculate
                          advertised yields are standardized for all stock and bond mutual funds.
                          However, these methods differ from the accounting methods used by the
                          Fund to maintain its books and records, and so the advertised 30-day
                          yield may not fully reflect the income paid to your own account or the
                          yield reported in the Fund's reports to shareholders.
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INVESTMENT                The Fund is an open-end diversified investment company. The objective
OBJECTIVE                 of the Fund is to provide long-term growth of capital by investing
                          primarily in common stocks. Dividend income is incidental to this
                          objective. There is no assurance that the Fund will achieve its stated
                          objective.
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INVESTMENT                The Fund invests primarily in the equity securities of growth
POLICIES                  companies. Under normal circumstances, at least 65% of the Fund's
THE FUND INVESTS          assets will be invested in such securities. The Fund is managed without
PRIMARILY IN              regard to tax ramifications. The Fund will generally invest in a
"GROWTH STOCKS"           diversified portfolio of common stocks but may also, from time-to-time,
                          hold securities that are convertible into common stocks.
                          The Fund is expected to invest a majority of its assets in "established
                          growth companies" -- i.e., larger capitalization firms that have
                          generally exhibited above-average rates of growth in sales and earnings
                          over an extended period. The Fund may also invest in "emerging growth
                          companies" -- expanding firms with generally smaller stock market
                          capitalizations. Finally, the Fund may hold investments in "cyclical
                          growth and other companies." These are firms which, while they may not
                          have a history of stable long-term growth, are nonetheless expected to
                          represent attractive investments.
                          The Fund employs three independent investment advisers, each of which
                          independently chooses common stock investments for the Fund. Wellington
                          Management Company, which is currently responsible for approximately
                          40% of the Fund's investments, utilizes traditional methods of security
                          selection, including fundamental company research and relative
                          valuation techniques, in selecting growth stocks for the Fund. In
                          contrast, Franklin Portfolio Associates Trust and Husic Capital
                          Management, which are responsible for approximately 33% and 13%,
                          respectively, of the Fund's investments, are "quantitative" investment
                          managers. They utilize computerized techniques designed to
                          track -- and, if possible, outperform -- the returns of a specific
                          standard, the Growth Fund Stock Index. The Growth Fund Stock Index, a
                          benchmark calculated by Morningstar, Inc., is a measure of the
                          composite performance of the common stock holdings of the 50 largest
                          growth mutual funds.
                          In addition to investing in common stocks, the Fund is also authorized
                          to invest in certain short-term fixed income securities as cash
                          reserves and to use stock index futures and options to a limited
                          extent. See "Implementation of Policies" for a description of these and
                          other investment practices of the Fund.
                          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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INVESTMENT                As a mutual fund investing primarily in common stocks, the Fund is
RISKS                     subject to market risk -- i.e., the possibility that common stock
                          prices will decline over short or even extended periods. The U.S. stock
THE FUND IS SUBJECT       market tends to be cyclical, with periods when stock prices generally
TO STOCK MARKET RISK      rise and periods when prices generally decline.
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<S>                       <C>
                          To illustrate the volatility of stock prices, the following table sets
                          forth the extremes for stock market returns as well as the average
                          return for the period from 1926 to 1993, as measured by the Standard &
                          Poor's 500 Composite Stock Price Index:

                                               U.S. STOCK MARKET RETURNS (1926-1993)
                                                    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        +12.3         +10.3          +10.6          +10.6

                          As shown, from 1926 to 1993, common stocks have provided an annual
                          total return (capital appreciation plus dividend income), on average,
                          of +12.3%. While this average return can be used as a guide for setting
                          reasonable expectations for future stock market returns, it may not be
                          useful for forecasting future returns in any particular period, as
                          stock returns are quite volatile from year to year.
                          The chart above should not be viewed as a representation of future
                          investment performance of the stock market or the Fund. The illustrated
                          returns represent historical investment performance, which may be a
                          poor guide to future returns. Also, stock market indexes are based on
                          unmanaged portfolios of securities before transaction costs and other
                          expenses. Such costs reduce the relative performance of the Fund and
                          other "real world" portfolios. Finally, given its emphasis on "growth
                          stock" investments, the Fund is likely to differ significantly in terms
                          of portfolio composition and investment performance from broad market
                          averages like the S&P 500.
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WHO SHOULD                The Fund is designed for investors who have the perspective, patience
INVEST                    and financial ability to assume above-average interim investment risk
INVESTORS SEEKING         in pursuit of long-term capital growth. Since the Fund will focus on
LONG-TERM GROWTH          common stocks that offer below-average levels of current income,
                          greater-than-average investment risk -- for a common stock fund -- is
                          likely. The Fund's share price is expected to be volatile.
                          No assurance can be given that the Fund will attain its objective or
                          that shareholders will be protected from the risk of loss that is
                          inherent in equity investing. Investors may wish to reduce the
                          potential risk of investing in the Fund by purchasing shares on a
                          periodic basis (dollar-cost averaging) rather than making an investment
                          in one lump sum.
                          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. 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
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<S>                       <C>
                          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.
                          Investors should not consider the Fund a complete investment program,
                          but should also maintain holdings in investments with different risk
                          characteristics, such as bonds and money market instruments. Investors
                          may also wish to complement an investment in the Fund with other types
                          of common stock investments.
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IMPLEMENTATION            The Fund follows a number of distinctive investment practices in an
OF POLICIES               effort to achieve its investment objective.
A PORTION OF THE          Two of the Fund's investment advisers, Franklin Portfolio Associates
FUND'S ASSETS ARE         Trust ("FPA") and Husic Capital Management ("Husic"), use quantitative
MANAGED USING             investment techniques in managing their respective portions of the
QUANTITATIVE              Fund's common stock investments. For the portfolio of securities they
TECHNIQUES                manage, FPA and Husic independently seek to track and, if possible,
                          outperform the investment returns of the Growth Fund Stock Index.
                          Currently, FPA and Husic are responsible for approximately 33% and 13%,
                          respectively, of the Fund's investments.
                          The Growth Stock Fund Index (the "Index") represents the composite
                          common stock portfolio of the 50 largest growth mutual funds, as
                          calculated by Morningstar, Inc. ("Morningstar"), an independent company
                          which provides mutual fund statistics. The 50 mutual funds included in
                          that Index are determined annually (as of December 31) by Morningstar.
                          For the two quantitative investment managers (FPA and Husic), the Index
                          is an essential tool in developing portfolios that will be designed to
                          track and, hopefully, outperform the Index. For Wellington Management
                          Company, the composition of the Index serves as a guideline for setting
                          portfolio policy. For all three investment advisers, the Index is
                          utilized as a benchmark for determining incentive/penalty investment
                          advisory fees. See "Investment Advisers" and the Statement of
                          Additional Information for further information on the Index and its use
                          as a benchmark for incentive/penalty fees.
THE FUND MAY INVEST       Although it normally seeks to remain substantially fully invested in
IN SHORT-TERM FIXED       equity securities, the Fund may invest temporarily in certain
INCOME SECURITIES         short-term fixed income securities. Such securities may be used to
                          invest uncommitted cash balances, to maintain liquidity to meet
                          shareholder redemptions, or to take a temporarily defensive position
                          against potential stock market declines. These securities include:
                          obligations of the United States Government and its agencies or
                          instrumentalities; commercial paper, bank certificates of deposit, and
                          bankers' acceptances; and repurchase agreements collateralized by these
                          securities. Approximately 5% of the Fund's net assets are expected to
                          be held as cash reserves, which will be managed by The Vanguard Group,
                          Inc. at no charge to the Fund.
THE FUND MAY USE          The Fund may utilize stock futures contracts and options to a limited
FUTURES CONTRACTS         extent. Specifically, the Fund may enter into futures contracts
AND OPTIONS               provided that not more than 5% of its assets are required as a futures
                          contract deposit. In addition, the
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<S>                       <C>
                          Fund may enter into futures contracts and options transactions only to
                          the extent that obligations under such contracts or transactions
                          represent not more than 20% of the Fund's assets.
FUTURES CONTRACTS AND     The primary risks associated with the use of futures contracts and
OPTIONS POSE CERTAIN      options are: (i) imperfect correlation between the change in market
RISKS                     value of the stocks 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.
                          The risk of loss in trading futures contracts in some strategies can be
                          substantial, due both to the low margin deposits required and the
                          extremely high degree of leverage involved in futures pricing. As a
                          result, a relatively small price movement in a futures contract may
                          result in immediate and substantial loss (or gain) to the investor.
                          When investing in futures contracts, the Fund will segregate cash or
                          cash equivalents in the amount of the underlying obligation.
                          Futures contracts and options may be used for several reasons: to
                          maintain cash reserves while simulating full investment, to facilitate
                          trading, to reduce transaction costs, or to seek higher investment
                          returns when a futures contract is priced more attractively than the
                          underlying equity security or index. While futures contracts and
                          options can be used as leveraged investments, the Fund may not use
                          futures contracts or options transactions to leverage its net assets.
THE FUND MAY LEND         The Fund may lend its investment securities on a short-term or
ITS SECURITIES            long-term basis to qualified institutional investors for the purpose 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.
BORROWING                 The Fund may borrow money, subject to the limits set forth in the
                          section "Investment Limitations," for temporary or emergency purposes,
                          including the meeting of redemption requests which might otherwise
                          require the untimely disposition of securities.
PORTFOLIO TURNOVER IS     Although it generally seeks to invest for the long term, the Fund
NOT EXPECTED TO           retains the right to sell securities irrespective of how long they have
EXCEED 100%               been held. It is anticipated that the annual portfolio turnover of the
                          Fund will not exceed 100%. A turnover rate of 100% would occur, for
                          example, if all of the securities of the Fund were replaced within one
                          year.
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<S>                       <C>
INVESTMENT                The Fund has adopted certain limitations on its investment practices.
LIMITATIONS               Specifically, the Fund will not:

THE FUND HAS ADOPTED
CERTAIN FUNDAMENTAL       (a) with respect to 75% of the value of its total assets, invest more
LIMITATIONS                   than 5% of its assets in the securities of any single company;
                          (b) with respect to 75% of the value of its total assets, purchase more
                              than 10% of the voting securities of any issuer;
                          (c) invest more than 25% of its assets in any one industry; and
                          (d) borrow money, except from banks (or through repurchase agreements)
                              for temporary or emergency (not leveraging) purposes, and then not in
                              an amount exceeding 10% 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 net assets, the Fund will not make any
                              additional investments.
                          These investment limitations are considered at the time investment
                          securities are purchased. The limitations described here and in the
                          Statement of Additional Information may be changed only with the
                          approval of a majority of the Fund's shareholders.
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MANAGEMENT                The Fund is a member of The Vanguard Group of Investment Companies, a
OF THE FUND               family of 32 investment companies with 78 distinct mutual fund
                          portfolios and total assets in excess of $120 billion. Through their
VANGUARD ADMINISTERS      jointly owned subsidiary, The Vanguard Group, Inc. ("Vanguard"), the
AND DISTRIBUTES THE       Fund and the other funds in the Group obtain at cost virtually all of
FUND                      their corporate management, administrative and distribution services.
                          Vanguard also provides investment advisory services on an at-cost basis
                          to certain Vanguard funds. As a result of Vanguard's unique corporate
                          structure, the Vanguard funds have costs substantially lower than those
                          of most competing mutual funds. In 1993, the average expense ratio
                          (annual costs including advisory fees divided by total net assets) for
                          the Vanguard funds amounted to approximately .30% compared to an
                          average of 1.02% for the mutual fund industry (data provided by Lipper
                          Analytical Services).
                          The Officers of the 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 the Directors
                          and Officers of the Fund and a statement of their present positions and
                          principal occupations during the past five years can be found in the
                          Statement of Additional Information.
                          Vanguard employs a supporting staff of management and administrative
                          personnel needed to provide the requisite services to the funds and
                          also furnishes the funds with necessary office space, furnishings and
                          equipment. Each fund pays its share of Vanguard's net expenses, which
                          are allocated among the funds under methods approved by the Board of
                          Directors (Trustees) of each fund. In addition, each fund bears its own
                          direct expenses, such as legal, auditing and custodian fees.
                          Vanguard provides distribution and marketing services to the funds. The
                          funds are available on a no-load basis (i.e., there are no sales
                          commissions or 12b-1 fees). However, each fund bears its share of the
                          Group's distribution costs.
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<S>                       <C>
INVESTMENT                The Fund currently employs three investment advisers: Wellington
ADVISERS                  Management Company ("WMC"), 75 State Street, Boston, MA 02109; Franklin
THE FUND EMPLOYS          Portfolio Associates Trust ("FPA"), One Post Office Square, Boston, MA
THREE INDEPENDENT         02109; and Husic Capital Management ("Husic"), 585 Skippack Pike, Blue
INVESTMENT ADVISERS       Bell, PA 19422. Prior to April 24, 1990, WMC was the sole investment
                          adviser to the Fund (then known as W.L. Morgan Growth Fund). FPA and
                          Husic were added as advisers to the Fund on that date.
                          The proportion of the net assets of the Fund managed by each adviser
                          was established by the Board of Directors, and may be changed in the
                          future by the Board of Directors as circumstances warrant. Presently
                          WMC is responsible for approximately 40% of the Fund's investments; FPA
                          and Husic are responsible for 33% and 13%, respectively. (The cash
                          portion of the Fund's net assets is managed by The Vanguard Group, Inc.
                          at no charge to the Fund.)
                          The Fund has entered into investment advisory agreements with WMC, FPA,
                          and Husic which provide that the advisers manage the investment and
                          reinvestment of the Fund's assets and continuously review, supervise
                          and administer the Fund's investment program. The advisers discharge
                          their responsibilities subject to the control of the Officers and
                          Directors of the Fund.
. . .WELLINGTON           WMC is a professional investment advisory firm which globally provides
MANAGEMENT                services to investment companies, institutions, and individuals. Among
COMPANY (WMC)             the clients of WMC are 12 of the 32 investment companies of The
                          Vanguard Group. As of December 31, 1993, WMC held discretionary
                          management authority with respect to approximately $82.8 billion of
                          assets. WMC and its predecessor organizations have provided advisory
                          services to investment companies since 1933 and to investment
                          counseling clients since 1960.
                          Frank V. Wisneski and Nancy T. August, Senior Vice Presidents of WMC,
                          serve as portfolio managers of the assets of the Fund assigned to WMC.
                          Each separately oversees one-half of the assets assigned to WMC. Mr.
                          Wisneski, who has been employed at WMC for 22 years, served as the sole
                          portfolio manager of the Fund from September 1979 to December 1989. At
                          that time, the responsibility for approximately one-half of the Fund's
                          assets was transferred to Ms. August. In addition to her work for the
                          Fund, Ms. August, who has also been employed at WMC for 22 years,
                          oversees various investment portfolios with objectives and policies
                          similar to those of the Fund. In managing the assets assigned to WMC,
                          Mr. Wisneski and Ms. August are supported by research and other
                          investment services provided by the professional staff of WMC.
                          The Fund pays WMC a basic advisory fee calculated by applying varying
                          percentage rates to the average net assets of the Fund managed by WMC.
                          The basic fee schedule is as follows:
</TABLE>
    
 
<TABLE>
<CAPTION>
                            NET ASSETS         RATE
                        ------------------    -------
                        <S>                   <C>
                        First $50 million      0.325%
                        Next $100 million      0.225%
                        Over $150 million      0.150%

</TABLE>

                                        9
<PAGE>   10
<TABLE>
<S>                       <C>
                          This basic advisory fee may be increased or decreased by applying an
                          adjustment formula ("incentive/penalty fee") based on WMC's investment
                          performance relative to the investment record of Growth Fund Stock
                          Index. Under the incentive/penalty fee schedule, the basic fee payable
                          to WMC may be increased or decreased by as much as .075% depending on
                          the investment performance of the equity investments managed by WMC.
                          Prior to April 24, 1990 WMC served as sole investment adviser to the
                          Fund. At that time the Standard & Poor's 500 Composite Stock Price
                          Index (the "S&P 500") was used as the benchmark for determining any
                          incentive/penalty fee paid to WMC. However, while the S&P 500 does
                          serve as a broad gauge of stock market performance, it does not
                          directly measure the investment performance of "growth stocks," the
                          primary investments of the Fund. To assess the performance of its
                          advisers relative to comparable "growth stock" investments, the Fund
                          has adopted as a benchmark for incentive/penalty fees the Growth Fund
                          Stock Index, an index of the equity holdings of the 50 largest growth
                          stock mutual funds.
. . .FRANKLIN PORTFOLIO   FPA is a professional investment advisory firm which specializes in the
ASSOCIATES (FPA)          management of common stock portfolios through the use of quantitative
                          investment models. Founded in 1982, FPA, a Massachusetts business
                          trust, is a wholly owned subsidiary of Mellon Financial Services
                          Corporation #1, which itself is a wholly owned subsidiary of Mellon
                          Bank Corporation. As of December 31, 1993, FPA provided investment
                          advisory services with respect to approximately $5.12 billion of client
                          assets, including $529.9 million in assets for Vanguard Quantitative
                          Portfolios, Inc., another mutual fund member of The Vanguard Group.
                          FPA employs proprietary computer models in selecting individual equity
                          securities and in structuring investment portfolios for its clients,
                          including the Fund. John J. Nagorniak, President of FPA, has been
                          designated as the portfolio manager of the assets of the Fund assigned
                          to FPA; he is responsible for overseeing the application of FPA's
                          quantitative techniques to those assets. Mr. Nagorniak and the other
                          investment principals of FPA are responsible for the ongoing develop-
                          ment and enhancement of FPA's quantitative investment techniques.
                          The Fund pays FPA a basic advisory fee calculated by applying varying
                          percentage rates to the average net assets of the Fund managed by FPA.
                          The basic fee schedule is as follows:
</TABLE>
 
<TABLE>
<CAPTION>
                            NET ASSETS         RATE
                        ------------------    -------
                        <S>                   <C>
                        First $100 million     0.250%
                        Next $200 million      0.200%
                        Over $300 million      0.150%
</TABLE>
<TABLE>
<S>                       <C>
                          This basic advisory fee may be increased or decreased by applying an
                          incentive/penalty fee based on FPA's investment performance relative to
                          the investment record of the Growth Fund Stock Index. Under the
                          incentive/penalty fee schedule, the basic fee payable to FPA may be
                          increased or decreased by as much as .10% depending on the investment
                          performance of the equity investments managed by FPA.
</TABLE>
 
                                       10
<PAGE>   11
 
   
<TABLE>
<S>                       <C>
. . .AND HUSIC CAPITAL    Vanguard/Morgan Growth Fund also employs Husic Capital Management
MANAGEMENT (HUSIC)        ("Husic"), 555 California Street, Suite 2900, San Francisco, California
                          94104 as an investment adviser for approximately 13% of its
                          investments. Husic is a professional investment advisory firm which
                          specializes in the management of common stock portfolios through the
                          use of quantitative investment models.
                          For the services provided by Husic under the investment advisory
                          agreement the Fund will pay Husic a basic fee at the end of each fiscal
                          quarter, calculated by applying a quarterly rate, based on the
                          following annual percentage rates, to the average month-end net assets
                          of the Husic Portfolio for the quarter:
</TABLE>
    
 
<TABLE>
<CAPTION>
                            NET ASSETS         RATE
                        ------------------    ------
                        <S>                   <C>
                        First $25 million      0.40%
                        Next $125 million      0.35%
                        Next $350 million      0.25%
                        Next $500 million      0.20%
                        Over $1 billion        0.15%
</TABLE>
 
   
<TABLE>
<S>                       <C>
                          Effective with the quarter ending September 30, 1994, the basic fee
                          paid to Husic, as provided above, may be increased or decreased by
                          applying an incentive/penalty fee based on the investment performance
                          of the Husic Portfolio relative to the investment record of the Growth
                          Fund Stock Index ("Growth Index"). Under the incentive/penalty fee
                          schedule, the basic fee payable to Husic may be increased or decreased
                          by as much as 75% of the basic fee depending on the investment
                          performance of the equity investment managed by Husic.
                          Under rules of the Securities and Exchange Commission, the
                          incentive/penalty fee structure will not be fully operable until the
                          quarter ending September 30, 1996, and, until that date, will be
                          calculated according to certain transition rules. See the Statement of
                          Additional Information for a detailed description of the incen-
                          tive/penalty fee schedule for Husic and the applicable transition
                          rules.
                          For the fiscal year ended December 31, 1993, the aggregate investment
                          advisory fees paid by Vanguard/Morgan Growth Fund represented an
                          effective annual rate of .18 of 1% of average net assets, before a net
                          decrease of .03 of 1% based on performance. The investment advisory
                          fees paid by the Fund for this period to WMC, FPA and Husic represented
                          an effective annual rate of .17, .23 and .37 of 1%, respectively, of
                          the average net assets managed by WMC, FPA and Husic. The Fund also
                          paid an investment advisory fee to Roll and Ross Asset Management
                          Corporation ("R&R"), 585 Skippack Pike, Blue Bell, Pa 19422, for the
                          period January 1, 1993 to June 30, 1993 when R&R resigned as investment
                          adviser to the Fund. The investment advisory fees paid to R&R
                          represented an effective annual rate of .39 of 1% of the average assets
                          managed by R&R for this period.
VANGUARD MANAGES          Vanguard's Core Management Group provides investment advisory services
A PORTION OF THE          on an at-cost basis with respect to a portion of the Fund's assets
FUND'S ASSETS ON          (currently approximately 9%). The Core Management Group also provides
AN AT-COST BASIS          investment advisory services to several Vanguard Funds and to several
                          indexed separate accounts. Total assets under management by the Core
                          Management Group were approxi-
</TABLE>
    
 
                                       11
<PAGE>   12
   
<TABLE>
<S>                       <C>
                          mately $16.4 billion as of December 31, 1993. The portion of the Fund
                          allocated to the Core Management Group is managed using computerized,
                          quantitative techniques based on a value index constructed to
                          approximate the aggregate fundamental characteristics of a typical
                          broadly diversified growth fund such as Vanguard/Morgan Growth Fund.
                          For further information concerning the index, please refer to the
                          Statement of Additional Information. The Core Management Group is
                          supervised by the Officers of the Fund.
                          WMC, FPA, Husic and Vanguard's Core Management Group are authorized to
                          select brokers or dealers to execute the purchase and sale of the
                          Fund's portfolio securities, and direct the advisers to use their 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 their
                          determinations.
                          The Fund has authorized WMC, FPA, Husic and Vanguard's Core Management
                          Group to pay higher commissions in recognition of brokerage services
                          felt necessary for the achievement of better execution, provided the
                          advisers believe this to be in the best interests of the Fund. Although
                          the Fund does not market its shares through intermediary brokers or
                          dealers, the Fund's advisers 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 13 provides investment results for the Fund for
RECORD                    several periods throughout the Fund's lifetime. The results shown
                          represent "total return" investment performance, which assumes the
                          reinvestment of all capital gains and income dividends for the
                          indicated periods. Also included is comparative information with
                          respect to the unmanaged Standard & Poor's 500 Composite Stock Price
                          Index, a widely-used barometer of stock market activity, and the
                          Consumer Price Index, a statistical measure of changes in the prices of
                          goods and services. The table does 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
</TABLE>
     
                                       12
<PAGE>   13
 
<TABLE>
<S>                       <C>
                          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.
</TABLE>
<TABLE>
<CAPTION>
                                                    AVERAGE ANNUAL RETURN FOR
                                                   VANGUARD/MORGAN GROWTH FUND
                                           -------------------------------------------
                        FISCAL PERIODS     VANGUARD/MORGAN     S&P 500      CONSUMER
                        ENDED 12/31/93       GROWTH FUND        INDEX      PRICE INDEX
                        --------------     ---------------     -------     -----------
                        <S>                <C>                 <C>         <C>
                        1 Year                  + 7.3%          +10.1%         +2.7%
                        5 Years                 +12.9           +14.5          +3.9
                        10 Years                +12.0           +14.9          +3.7
                        Lifetime*               +11.2           +10.5          +5.8
                        *December 31, 1968 to December 31, 1993.

</TABLE>
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------
<S>                       <C>
DIVIDENDS,                The Fund expects to pay dividends annually from ordinary income. Net
CAPITAL GAINS             capital gains distributions, if any, will also be made annually. The
AND TAXES                 Fund is managed without regard to tax ramifications.
THE FUND PAYS
DIVIDENDS AND ANY         Dividend and capital gains distributions may be automatically
CAPITAL GAINS ANNUALLY    reinvested or received in cash. See "Choosing a Distribution Option"
                          for a description of these distribution methods.
                          In order to satisfy certain requirements of the Tax Reform Act of 1986,
                          the Fund may declare special year-end dividend and capital 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.
                          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, whether received in cash or reinvested in additional
                          shares, will be taxable to shareholders as ordinary income. For
                          corporate investors, dividends from net investment income will
                          generally qualify in part for the intercorporate dividends-received
                          deduction. However, the portion of the dividends so qualified depends
                          on the aggregate taxable qualifying dividend income received by 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 byproduct of
                          portfolio management activities. Consequently, capital gains distri-
                          butions 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.
</TABLE>

                                      13
<PAGE>   14

<TABLE>
<S>                       <C>
                          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 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         A sale of shares of the Fund is a taxable event, and may result in a
LOSS MAY BE REALIZED      capital gain or loss. A capital gain or loss may be realized from an
UPON EXCHANGE OR          ordinary redemption of shares or an exchange of shares between two
REDEMPTION                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 SHARE PRICE           The Fund's share price or "net asset value" per share is determined by
OF THE FUND               dividing the total market value of the Fund's investments and other
                          assets, less any liabilities, by the number of outstanding shares of
                          the Fund. Net asset value per share is determined once daily at the
                          close of regular trading on the New York Stock Exchange (generally 4:00
                          p.m. Eastern time) on each day that the Exchange is open for business.
                          Portfolio securities that are listed on a securities exchange are
                          valued at the last quoted sales price on the day the valuation is made.
                          Price information on listed securities is taken from the exchange where
                          the security is primarily traded. Securities which are listed on an
                          exchange and which are not traded on the valuation date are valued at
                          the mean between the latest quoted bid and ask prices. Unlisted
                          securities for which market quotations are readily available are valued
                          at the latest quoted bid price. Other assets and securities for which
                          no quotations are readily available are valued at fair value as
                          determined in good faith by the Directors. Securities may be valued on
                          the basis of prices provided by a pricing service when such prices are
                          believed to reflect the fair market value of such securities.
</TABLE>


                                      14

<PAGE>   15

<TABLE>
<S>                       <C>
                          The Fund's share price can be found daily in the mutual fund listings
                          of most major newspapers under the heading of The Vanguard Group.
- -------------------------------------------------------------------------------------------------
GENERAL                   The Fund is a Maryland corporation. The Articles of Incorporation
INFORMATION               permit the Directors to issue 150,000,000 shares of common stock, with
                          a $.10 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
                          serves as independent accountants for the Fund and will audit its
                          financial statements annually. The Fund is not involved in any
                          litigation.
- -------------------------------------------------------------------------------------------------
</TABLE>
 
                                      15

<PAGE>   16
 
<TABLE>
<S>                       <C>
                                       SHAREHOLDER GUIDE
OPENING AN                You may open a regular (non-retirement) account, either by mail or
ACCOUNT AND               wire. Simply complete and return an Account Registration Form and any
PURCHASING                required legal documentation, indicating the amount you wish to invest.
SHARES                    Your purchase must be equal to or greater than the $3,000 minimum
                          initial investment requirement ($500 for Uniform Gifts/Transfers to
                          Minors Act accounts). You must open a new Individual Retirement Account
                          by mail (IRAs may not be opened by wire) using a Vanguard IRA Adoption
                          Agreement. Your purchase must be equal to or greater than the $500
                          minimum initial investment requirement, but no more than $2,000 if you
                          are making a regular IRA contribution. Rollover contributions are
                          generally limited to the amount withdrawn within the past 60 days from
                          an IRA or other qualified Retirement Plan. If you need assistance with
                          the forms or have any questions about the Fund, please call our
                          Investor Information Department (1-800-662-7447). Note: For other types
                          of account registrations (e.g., corporations, associations, other
                          organizations, trusts or powers of attorney), please call us to
                          determine which additional forms you may need.
                          Because of the risks associated with common stock investments, the Fund
                          is intended to be a long-term investment vehicle and is not designed to
                          provide investors with a means of speculating on short-term market
                          movements. Consequently, the Fund reserves the right to reject any
                          specific purchase (and exchange purchase) request. The Fund also
                          reserves the right to suspend the offering of shares for a period of
                          time.
                          The 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).
ADDITIONAL                Subsequent investments to regular accounts may be made by mail ($100
INVESTMENTS               minimum), wire ($1,000 minimum), exchange from another Vanguard Fund
                          account ($100 minimum), or Vanguard Fund Express. Subsequent
                          investments to Individual Retirement Accounts may be made by mail ($100
                          minimum) or exchange from another Vanguard Fund account. In some
                          instances, contributions may be made by wire or Vanguard Fund Express.
                          Please call us for more information on these options.
                          -----------------------------------------------------------------------
</TABLE>
 
                                      16

<PAGE>   17
 
<TABLE>
<S>                       <C>                                      <C>
                                                                   ADDITIONAL INVESTMENTS
                          NEW ACCOUNT                              TO EXISTING ACCOUNTS
PURCHASING BY MAIL        Please include the amount of             Additional investments should
Complete and sign the     your initial investment on the           include the Invest-by-Mail
enclosed Account          registration form, make your             remittance form attached to
Registration Form         check payable to The Vanguard            your Fund confirmation
                          Group-26, and mail to:                   statements. Please make your
                                                                   check payable to The Vanguard
                          VANGUARD FINANCIAL CENTER                Group-26, write your account
                          P.O. BOX 2600                            number on your check, and,
                          VALLEY FORGE, PA 19482                   using the return envelope
                                                                   provided, mail to the address
                                                                   indicated on the Invest-by-Mail
                                                                   Form.
For express or            VANGUARD FINANCIAL CENTER                All written requests should be
registered mail,          455 DEVON PARK DRIVE                     mailed to one of the addresses
send to:                  WAYNE, PA 19087                          indicated for new accounts. Do
                                                                   not send registered or express
                                                                   mail to the post office box
                                                                   address.
                          ------------------------------------------------------------------------
</TABLE>
<TABLE>
<S>                                         <C>
PURCHASING BY WIRE                          CORESTATES BANK, N.A.
Money should be                             ABA 031000011
wired to:                                   CORESTATES NO. 0101 9897
                                            ATTN VANGUARD
BEFORE WIRING                               VANGUARD/MORGAN GROWTH FUND
Please contact                              ACCOUNT NUMBER
Client Services                             ACCOUNT REGISTRATION
(1-800-662-2739)
</TABLE>
<TABLE>
<S>                       <C>
                          To assure 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 above after completing your wire arrangement. Note: Federal
                          Funds wire purchase orders will be accepted only when the Fund and
                          Custodian Bank are open for business.
                          -----------------------------------------------------------------------
PURCHASING BY             You may open an account or purchase additional shares by making an
EXCHANGE (from a          exchange from another Vanguard Fund account. However, the Fund reserves
Vanguard account)         the right to refuse any exchange purchase request. Call our Client
                          Services Department (1-800-662-2739) for assistance. The new account
                          will have the same registration as the existing account.
                          -----------------------------------------------------------------------
PURCHASING BY             The Fund Express Special Purchase option lets you move money from your
FUND EXPRESS              bank account to your Vanguard account at your request. Or if you choose
                          the Automatic Investment option, money will be moved from your bank
Special Purchase and      account to your Vanguard account on the schedule (monthly, bimonthly
Automatic Investment      [every other month], quarterly or yearly) you select. To establish
                          these Fund Express options, please provide the appropriate information
                          on the Account Registration Form. We will
</TABLE>
 
                                      17
<PAGE>   18
<TABLE>
<S>                       <C>
                          send you a confirmation of your Fund Express enrollment; please wait
                          three weeks before using the service.
- -------------------------------------------------------------------------------------------------
CHOOSING A                You must select one of three distribution options:
DISTRIBUTION              1. AUTOMATIC REINVESTMENT OPTION -- Both dividends and capital gains
OPTION                       distributions will be reinvested in additional Fund shares. This option
                             will be selected for you automatically unless you specify one of the
                             other options.
                          2. CASH DIVIDEND OPTION -- Your dividends will be paid in cash and your
                             capital gains will be reinvested in additional Fund shares.
                          3. ALL CASH OPTION -- Both dividend and capital gains distributions
                             will be paid in cash.
                          You may change your option by calling our Client Services Department
                          (1-800-662-2739).
                          In addition, an option to invest your cash dividends and/or capital
                          gains distributions in another Vanguard Fund account is available.
                          Please call our Client Services Department (1-800-662-2739) for
                          information. You may also elect Vanguard Dividend Express which allows
                          you to transfer your cash dividends and/or capital gains distributions
                          automatically to your bank account. Please see "Other Vanguard
                          Services" for more information.
- -------------------------------------------------------------------------------------------------
TAX CAUTION               Under Federal tax laws, the Fund is required to distribute net capital
                          gains and dividend income to Fund shareholders. These distributions are
INVESTORS SHOULD ASK      made to all shareholders who own Fund shares as of the distribution's
ABOUT THE TIMING          record date, regardless of how long the shares have been owned.
OF CAPITAL GAINS AND      Purchasing shares just prior to the record date could have a
DIVIDEND DISTRIBUTIONS    significant impact on your tax liability for the year. For example, if
BEFORE INVESTING          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 dividend and capital
                          gains distributions normally occur in December. For additional
                          information on distributions and taxes, see the section titled
                          "Dividends, Capital Gains, and Taxes."
- -------------------------------------------------------------------------------------------------
</TABLE>
 
                                       18
<PAGE>   19
<TABLE>
<S>                       <C>
IMPORTANT                 The easiest way to establish optional Vanguard services on your account
INFORMATION               is to select the options you desire when you complete your Account
ESTABLISHING OPTIONAL     Registration Form. If you wish to add options later, you may need to
SERVICES                  provide Vanguard with additional information and a signature guarantee.
                          Please call our Client Services Department (1-800-662-2739) for further
                          assistance.
SIGNATURE GUARANTEES      For our mutual protection, we may require a signature guarantee on
                          certain written transaction requests. A signature guarantee verifies
                          the authenticity of your signature and may be obtained from banks,
                          brokers and any other guarantor that Vanguard deems acceptable. A
                          signature guarantee cannot be provided by a notary public.
CERTIFICATES              Share certificates will be issued upon request. If a certificate is
                          lost, you may incur an expense to replace it.
BROKER-DEALER             If you purchase shares in Vanguard Funds through a registered
PURCHASES                 broker-dealer or investment adviser, the broker-dealer or adviser may
                          charge a service fee.
CANCELLING TRADES         The Fund will not cancel any trade (e.g., a purchase, exchange or
                          redemption) believed to be authentic, received in writing or by
                          telephone, once the trade has been received.
- -------------------------------------------------------------------------------------------------
WHEN YOUR                 Your trade date is the date on which your account is credited. If your
ACCOUNT WILL              purchase is made by check, Federal Funds wire or exchange, and is
BE CREDITED               received by the close of the New York Stock Exchange (generally 4:00
                          p.m. Eastern time), your trade date is the day of receipt. If your
                          purchase is received after the close of the Exchange, your trade date
                          is the next business day. Your shares are purchased at the net asset
                          value determined on your trade date.
                          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 check.
- -------------------------------------------------------------------------------------------------
SELLING YOUR              You may withdraw any portion of the funds in your account by redeeming
SHARES                    shares at any time. You may initiate a request by writing or by
                          telephoning. Your redemption proceeds are normally mailed within two
                          business days after the receipt of the request in Good Order.
SELLING BY MAIL           Requests should be mailed to VANGUARD FINANCIAL CENTER, VANGUARD/MORGAN
                          GROWTH FUND, P.O. BOX 1120, VALLEY FORGE, PA 19482. (For express or
                          registered mail, send your request to Vanguard Financial Center,
                          Vanguard/Morgan Growth 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.
                          -----------------------------------------------------------------------
</TABLE>
 
                                       19
<PAGE>   20
<TABLE>
<S>                       <C>
DEFINITION OF             GOOD ORDER means that the request includes the following:
GOOD ORDER
                          1. The account number and Fund name.
                          2. The amount of the transaction (specified in dollars or shares).
                          3. The signatures of all owners EXACTLY as they are registered on the
                             account.
                          4. Any required signature guarantees.
                          5. Other supporting legal documentation that might be required in the
                             case of estates, corporations, trusts, and certain other accounts.
                          6. Any certificates that you are holding for the account.
                          IF YOU HAVE QUESTIONS ABOUT THIS DEFINITION AS IT PERTAINS TO YOUR
                          ACCOUNT, PLEASE CALL OUR CLIENT SERVICES DEPARTMENT (1-800-662-2739).
                          -----------------------------------------------------------------------
SELLING BY                To sell shares by telephone, you or your pre-authorized representative
TELEPHONE                 may call our Client Services Department at 1-800-662-2739. The proceeds
                          will be sent to you by mail. Please see "Important Information About
                          Telephone Transactions."
                          -----------------------------------------------------------------------
SELLING BY FUND           If you select the Fund Express Automatic Withdrawal option, money will
EXPRESS                   be automatically moved from your Vanguard Fund account to your bank
Automatic Withdrawal      account according to the schedule you have selected. The Special
& Special Redemption      Redemption option lets you move money from your Vanguard account to
                          your bank account on your request. You may elect Fund Express on the
                          Account Registration Form or call our Investor Information Department
                          (1-800-662-7447) for a Fund Express application.
                          -----------------------------------------------------------------------
SELLING BY                You may sell shares by making an exchange into another Vanguard Fund
EXCHANGE                  account. Please see "Exchanging Your Shares" for details.
                          -----------------------------------------------------------------------
IMPORTANT REDEMPTION      Shares purchased by check may not be redeemed until payment for the
INFORMATION               purchase is collected, which may take up to ten calendar days. Your
                          money is invested during the holding period.
                          -----------------------------------------------------------------------
DELIVERY OF               Redemption requests received by telephone prior to the close of the New
REDEMPTION                York Stock Exchange (generally 4:00 p.m. Eastern time) are processed on
PROCEEDS                  the day of receipt and the redemption proceeds are normally sent on the
                          following business day.
                          Redemption requests received by telephone after the close of the
                          Exchange are processed on the business day following receipt and the
                          proceeds are normally sent on the second business day following
                          receipt.
                          Redemption proceeds must be sent to you within seven days of receipt of
                          your request in Good Order.
                          If you experience difficulty in making a telephone redemption during
                          periods of drastic economic or market changes, your redemption request
                          may be made by regular or express mail. It will be implemented at the
                          net asset value next determined after your request has been received by
                          Vanguard in Good Order. The Fund reserves the right to revise or
                          terminate the telephone redemption privilege at any time.
</TABLE>
 
                                       20
<PAGE>   21
<TABLE>
<S>                       <C>
                          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, Vanguard will send
COST STATEMENT            you an Average Cost Statement which provides you with the tax basis of
                          the shares you redeemed. Please see "Other Vanguard Services" for
                          additional information.
                          -----------------------------------------------------------------------
MINIMUM ACCOUNT           Due to the relatively high cost of maintaining smaller accounts, the
BALANCE                   Fund reserves the right to redeem shares in any account that is below
REQUIREMENT               the minimum initial investment amount of $3,000. In addition, if at any
                          time the total investment does not have a value of at least $1,000, you
                          may be notified that the value of your account is below the Fund's
                          minimum account balance requirement. You would then be allowed 60 days
                          to make an additional investment before the account is liquidated.
                          Proceeds would be promptly paid to the shareholder. This minimum does
                          not apply to IRAs, other retirement accounts, and Uniform
                          Gifts/Transfers to Minors Act accounts.
- -------------------------------------------------------------------------------------------------
EXCHANGING YOUR           Should your investment goals change, you may exchange your shares of
SHARES                    Vanguard/Morgan Growth Fund for those of other available Vanguard
                          Funds.
EXCHANGING BY             When exchanging shares by telephone, please have ready the Fund name,
TELEPHONE                 account number, Social Security Number or Taxpayer Identification
Call Client Services      Number listed on the account, and account address. Requests for
(1-800-662-2739)          telephone exchanges received prior to the close of trading on the New
                          York Stock Exchange (generally 4:00 p.m. Eastern time) are processed at
                          the close of business that same day. Requests received after the close
                          of the Exchange are processed the next business day. TELEPHONE
                          EXCHANGES ARE NOT ACCEPTED INTO OR FROM VANGUARD BALANCED INDEX FUND,
                          VANGUARD EXPLORER FUND, VANGUARD INDEX TRUST, VANGUARD INTERNATIONAL
                          EQUITY INDEX FUND -- EUROPEAN AND PACIFIC PORTFOLIOS, VANGUARD SMALL
                          CAPITALIZATION STOCK FUND, AND VANGUARD QUANTITATIVE PORTFOLIOS. If you
                          experience difficulty in making a telephone exchange, your exchange
                          request may be made by regular or express mail, and it will be
                          implemented at the closing net asset value on the date received by
                          Vanguard, provided the request is received in Good Order.
                          -----------------------------------------------------------------------
EXCHANGING BY MAIL        Please be sure to include on your exchange request the name and account
                          number of your current Fund, 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/MORGAN GROWTH FUND, P.O. BOX 1120, VALLEY FORGE, PA
                          19482. (For express or registered mail, send your request to Vanguard
                          Financial Center, Vanguard/Morgan Growth Fund, 455 Devon Park Drive,
                          Wayne, PA 19087.)
                          -----------------------------------------------------------------------
</TABLE>
 
                                       21
<PAGE>   22
<TABLE>
<S>                       <C>
IMPORTANT EXCHANGE        Before you make an exchange, you should consider the following:
INFORMATION
                          - Please read the Fund's prospectus before making an exchange. For a
                            copy and for answers to any questions you may have, call our Investor
                            Information Department (1-800-662-7447).
                          - An exchange is treated as a redemption and a purchase. Therefore, you
                            could realize a taxable gain or loss on the transaction.
                          - Exchanges are accepted only if the registrations and the Taxpayer
                            Identification numbers of the two accounts are identical.
                          - The shares to be exchanged must be on deposit and not held in
                            certificate form.
                          - New accounts are not currently accepted in Vanguard/Windsor Fund.
                          - The redemption price of shares redeemed by exchange is the net asset
                            value next determined after Vanguard has received all required
                            documentation in Good Order.
                          - When opening a new account by exchange, you must meet the minimum
                            investment requirement of the new Fund.
                          Every effort will be made to maintain the exchange privilege. However,
                          the Fund reserves the right to revise or terminate its provisions,
                          limit the amount of or reject any exchange, as deemed necessary, at any
                          time.
- -------------------------------------------------------------------------------------------------
EXCHANGE                  The Fund's exchange privilege is not intended to afford shareholders a
PRIVILEGE                 way to speculate on short-term movements in the market. Accordingly, in
LIMITATIONS               order to prevent excessive use of the exchange privilege that may
                          potentially disrupt the management of the Fund and increase transaction
                          costs, the Fund has established a policy of limiting excessive exchange
                          activity.
                          Exchange activity generally will not be deemed excessive if limited to
                          TWO SUBSTANTIVE EXCHANGE REDEMPTIONS (AT LEAST 30 DAYS APART) from the
                          Fund during any twelve month period. Notwithstanding these limitations,
                          the Fund reserves the right to reject any purchase request (including
                          exchange purchases from other Vanguard portfolios) that is reasonably
                          deemed to be disruptive to efficient portfolio management.
- -------------------------------------------------------------------------------------------------
IMPORTANT                 The ability to initiate redemptions (except wire redemptions) and
INFORMATION               exchanges by telephone is automatically established on your account
ABOUT TELEPHONE           unless you request in writing that telephone transactions on your
TRANSACTIONS              account not be permitted.
                          To protect your account from losses resulting from unauthorized or
                          fraudulent telephone instructions, Vanguard adheres to the following
                          security procedures:
                          1. SECURITY CHECK.  To request a transaction by telephone, the caller
                          must know (i) the name of the Portfolio; (ii) the 10-digit account
                          number; (iii) the exact name in which the account is registered; and
                          (iv) the Social Security or Taxpayer Identification number listed on
                          the account.
</TABLE>
 
                                       22
<PAGE>   23
<TABLE>
<S>                       <C>
                          2. PAYMENT POLICY.  The proceeds of any telephone redemption by mail
                          will be made payable to the registered shareowner and mailed to the
                          address of record, only.
                          Neither the Fund nor Vanguard will be responsible for the authenticity
                          of transaction instructions received by telephone, provided that
                          reasonable security procedures have been followed. Vanguard believes
                          that the security procedures described above are reasonable and that if
                          such procedures are followed, you will bear the risk of any losses
                          resulting from unauthorized or fraudulent telephone transactions on
                          your account. If Vanguard fails to follow reasonable security
                          procedures, it may be liable for any losses resulting from unauthorized
                          or fraudulent telephone transactions on your account.
- -------------------------------------------------------------------------------------------------
TRANSFERRING              You may transfer the registration of any of your Fund shares to another
REGISTRATION              person by completing a transfer form and sending it to: VANGUARD
                          FINANCIAL CENTER, P.O. BOX 1110, VALLEY FORGE, PA 19482, ATTENTION:
                          TRANSFER DEPARTMENT. The request must be in Good Order. To obtain a
                          transfer form and complete instructions, please call our Client
                          Services Department (1-800-662-2739).
- -------------------------------------------------------------------------------------------------
OTHER VANGUARD            For more information about any of these services, please call our
SERVICES                  Investor Information Department at 1-800-662-7447.
STATEMENTS AND            Vanguard will send you a confirmation statement each time you initiate
REPORTS                   a transaction in your account except for checkwriting redemptions from
                          Vanguard money market accounts. You will also receive a comprehensive
                          account statement at the end of each calendar quarter. The
                          fourth-quarter statement will be a year-end statement, listing all
                          transaction activity for the entire calendar year.
                          Vanguard's Average Cost Statement provides you with the average cost of
                          shares redeemed from your account using the average cost single
                          category method. This service is available for most taxable accounts
                          opened since January 1, 1986. In general, investors who redeemed shares
                          from a qualifying Vanguard account may expect to receive their Average
                          Cost Statement in February of the following year. Please call our
                          Client Services Department (1-800-662-2739) for information.
                          Financial reports on the Fund will be mailed to you semi-annually,
                          according to the Fund's fiscal year-end.
VANGUARD DIRECT           With Vanguard's Direct Deposit Service, most U.S. Government checks
DEPOSIT SERVICE           (including Social Security and military pension checks) and private
                          payroll checks may be automatically deposited into your Vanguard Fund
                          account. Separate brochures and forms are available for direct deposit
                          of U.S. Government and private payroll checks.
VANGUARD AUTOMATIC        Vanguard's Automatic Exchange Service allows you to move money
EXCHANGE SERVICE          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.
</TABLE>
 
                                       23
<PAGE>   24
<TABLE>
<S>                       <C>
VANGUARD FUND             Vanguard's Fund Express allows you to transfer money between your Fund
EXPRESS                   account and your account at a bank, savings and loan association, or a
                          credit union that is a member of the Automated Clearing House (ACH)
                          system. You may elect this service on the Account Registration Form or
                          call our Investor Information Department (1-800-662-7447) for a Fund
                          Express application.
                          The minimum amount that can be transferred by telephone is $100.
                          However, if you have established one of the automatic options, the
                          minimum amount is $50. The maximum amount that can be transferred using
                          any of the options is $100,000.
                          Special rules govern how your Fund Express purchases or redemptions are
                          credited to your account. In addition, some services of Fund Express
                          cannot be used with specific Vanguard Funds. For more information,
                          please refer to the Vanguard Fund Express brochure.
VANGUARD DIVIDEND         Vanguard's Dividend Express allows you to transfer your dividends
EXPRESS                   and/or capital gains distributions automatically from your Fund
                          account, one business day after the Fund's payable date, to your
                          account at a bank, savings and loan association, or a credit union that
                          is a member of the Automated Clearing House (ACH) network. You may
                          elect this service on the Account Registration Form or call our
                          Investor Information Department (1-800-662-7447) for a Vanguard
                          Dividend Express application.
VANGUARD                  Vanguard's Tele-Account is a convenient, automated service that
TELE-ACCOUNT              provides share price, price change and yield quotations on Vanguard
                          Funds through any TouchToneTM telephone. This service also lets you
                          obtain information about your account balance, your last transaction,
                          and your most recent dividend
                          or capital gains payment. To contact Vanguard's Tele-Account service,
                          dial 1-800-ON-BOARD (1-800-662-6273). A brochure offering detailed
                          operating instructions is available from our Investor Information
                          Department (1-800-662-7447).
- -------------------------------------------------------------------------------------------------
</TABLE>
 
                                       24
<PAGE>   25
 
                     (THIS PAGE INTENTIONALLY LEFT BLANK.)
<PAGE>   26
 
                     (THIS PAGE INTENTIONALLY LEFT BLANK.)
<PAGE>   27
 
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                              <C>                                    <C>
                                 (LOGO)                                                           (LOGO)
                                 ---------------------------                      
                                 THE VANGUARD GROUP                               
                                 OF INVESTMENT                                    
                                 COMPANIES                                        
                                 Vanguard Financial Center                        
                                 P.O. Box 2600                                    P   R   O   S   P   E   C   T   U   S 
                                 Valley Forge, PA 19482                                       APRIL 27, 1994            
                                 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
      PO26                                                                                        (LOGO)                
</TABLE>
 
- --------------------------------------------------------------------------------
<PAGE>   28
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
(LOGO)                                            A Member of The Vanguard Group
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
PROSPECTUS--APRIL 27, 1994
- --------------------------------------------------------------------------------
 
FUND INFORMATION: PARTICIPANT SERVICES--1-800-523-1188
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                        <C>
INVESTMENT                 Vanguard/Morgan Growth Fund, Inc. (the "Fund") is an open-end diversified
OBJECTIVE                  investment company that seeks to provide long-term growth of capital. The
AND POLICIES               Fund invests primarily in common stocks. Dividend income is incidental to
                           this objective. There is no assurance that the Fund will achieve its stated
                           objective.
- ------------------------------------------------------------------------------------------------------
IMPORTANT NOTE             This Prospectus is intended exclusively for participants in
                           employer-sponsored retirement or savings plans, such as tax-qualified
                           pension and profit-sharing plans and 401(k) thrift plans, as well as 403(b)
                           custodial accounts for non-profit educational and charitable organizations.
                           Another version of this Prospectus, containing information on how to open a
                           personal investment account with the Fund, is available for individual
                           investors. To obtain a copy of that version of the Prospectus, please call
                           1-800-662-7447.
- ------------------------------------------------------------------------------------------------------
OPENING AN                 The Fund is an investment option under a retirement or savings program
ACCOUNT                    sponsored by your employer. The administrator of your retirement plan or
                           your employee benefits office can provide you with detailed information on
                           how to participate in your plan and how to elect the Fund as an investment
                           option.
                           If you have any questions about the Fund, please contact Participant
                           Services at 1-800-523-1188. If you have any questions about your plan
                           account, contact your plan administrator or the organization that provides
                           recordkeeping services for your plan.
- ------------------------------------------------------------------------------------------------------
ABOUT THIS                 This Prospectus is designed to set forth concisely the information you
PROSPECTUS                 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. This Statement is dated April 27, 1994 and has
                           been incorporated by reference into this Prospectus. A copy may be obtained
                           without charge by writing to the Fund or by calling the Investor
                           Information Department.
- ------------------------------------------------------------------------------------------------------
</TABLE>
 
TABLE OF CONTENTS
 
   
<TABLE>
<S>                                       <C>                                       <C>
                                  Page                                     Page                                         Page
Fund Expenses ...................   2     Who Should Invest ..............   5      Dividends, Capital Gains
Financial Highlights ............   2     Implementation of Policies .....   6       and Taxes .......................   13
Yield and Total Return ..........   3     Investment Limitations .........   7      The Share Price of the Fund ......   13
Investment Objective ............   3     Management of the Fund .........   8      General Information ..............   14
Investment Policies .............   4     Investment Advisers ............   8                SERVICE GUIDE
Investment Risks ................   4     Performance Record .............  12      Participating in Your Plan .......   15
</TABLE>
    
 
- --------------------------------------------------------------------------------
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE COMMISSION PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   29
 
<TABLE>
<S>                       <C>
FUND EXPENSES             The following table illustrates all expenses and fees that as a
                          shareholder of the Fund would incur. The expenses and fees set forth in
                          the table are for the 1993 fiscal year.
</TABLE>
 
<TABLE>
<CAPTION>
                                                   SHAREHOLDER TRANSACTION EXPENSES
                                <S>                                                             <C>
                                ----------------------------------------------------------------------
                                Sales Load Imposed on Purchases...............................  None
                                Sales Load Imposed on Reinvested Dividends....................  None
                                Redemption Fees...............................................  None
                                Exchange Fees.................................................  None
</TABLE>
 
<TABLE>
<CAPTION>
                                                    ANNUAL FUND OPERATING EXPENSES
                                <S>                                                             <C>
                                ----------------------------------------------------------------------
                                Management & Administrative Expenses..........................  0.29%
                                Investment Advisory Fees......................................  0.15
                                12b-1 Fees....................................................  None
                                Other Expenses
                                  Distribution Costs.................................  0.02%
                                  Miscellaneous Expenses.............................  0.03
                                                                                       -----
                                Total Other Expenses..........................................  0.05
                                                                                                -----
                                         TOTAL OPERATING EXPENSES.............................  0.49%
                                                                                                -----
                                                                                                -----
                          The purpose of this table is to assist you in understanding the various
                          costs and expenses that an investor would bear directly or indirectly
                          as a shareholder 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.
</TABLE>
 
<TABLE>
<CAPTION>
                        1 YEAR     3 YEARS     5 YEARS     10 YEARS
                        -------    --------    --------    ---------
                        <S>        <C>         <C>         <C>
                          $5         $16         $27          $62
                          THIS EXAMPLE SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST OR
                          FUTURE EXPENSES OR PERFORMANCE. ACTUAL EXPENSES MAY BE HIGHER OR LOWER
                          THAN THOSE SHOWN.
- -------------------------------------------------------------------------------------------------
FINANCIAL                 The following financial highlights, for a share outstanding throughout
HIGHLIGHTS                each period, insofar as they relate to each of the five years in the
                          period ended December 31, 1993, have been audited by Price Waterhouse,
                          independent accountants, whose report thereon was unqualified. This
                          information should be read in conjunction with the Fund's financial
                          statements and notes thereto which are incorporated by reference in the
                          Statement of Additional Information and in this Prospectus, and which
                          appear, along with the report of Price Waterhouse, in the Fund's 1993
                          Annual Report to the Shareholders. For a more complete discussion of
                          the Fund's performance, please see the Fund's 1993 Annual Report to
                          Shareholders which may be obtained without charge by writing to the
                          Fund or by calling Participant Services at 1-800-523-1188.
</TABLE>
 
                                        2
<PAGE>   30
 
<TABLE>
<CAPTION>
                                                                  YEAR ENDED DECEMBER 31,
                                  ---------------------------------------------------------------------------------------
                           1993      1992      1991      1990      1989      1988      1987      1986      1985      1984
<S>                       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>
- ----------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE,
  BEGINNING OF YEAR.....  $12.65    $12.20    $10.40    $11.72    $10.27    $ 9.39    $11.50    $13.82    $11.45    $13.84
                          ------    ------    ------    ------    ------    ------    ------    ------    ------    ------
INVESTMENT OPERATIONS
  Net Investment
    Income..............     .18       .18       .29       .32       .28       .25       .23       .21       .23       .25
  Net Realized and
    Unrealized
    Gain (Loss) on
    Investments.........     .71       .97      2.66      (.50)     2.04      1.85       .31       .78      2.99      (.94)
                          ------    ------    ------    ------    ------    ------    ------    ------    ------    ------
    TOTAL FROM
      INVESTMENT
      OPERATIONS........     .89      1.15      2.95      (.18)     2.32      2.10       .54       .99      3.22      (.69)
- ----------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
  Dividends from Net
    Investment Income...    (.18)     (.18)     (.29)     (.34)     (.28)     (.24)     (.20)     (.43)     (.25)     (.31)
  Distributions from
    Realized Capital
    Gains...............   (1.35)     (.52)     (.86)     (.80)     (.59)     (.98)    (2.45)    (2.88)     (.60)    (1.39)
                          ------    ------    ------    ------    ------    ------    ------    ------    ------    ------
    TOTAL
      DISTRIBUTIONS.....   (1.53)     (.70)    (1.15)    (1.14)     (.87)    (1.22)    (2.65)    (3.31)     (.85)    (1.70)
- ----------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF
  YEAR..................  $12.01    $12.65    $12.20    $10.40    $11.72    $10.27    $ 9.39    $11.50    $13.82    $11.45
- ----------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------
TOTAL RETURN............    7.32%     9.54%    29.33%    (1.51)%   22.66%    22.34%     5.02%     7.83%    30.29%    (6.06)%
- ----------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Year
  (Millions)............  $1,135    $1,116      $957      $697      $733      $622      $538      $594      $665      $468
Ratio of Expenses to
  Average
  Net Assets............     .49%      .48%      .46%      .55%      .51%      .55%      .46%      .54%      .60%      .68%
Ratio of Net Investment
  Income to Average Net
  Assets................    1.36%     1.51%     2.36%     2.77%     2.38%     2.20%     1.52%     1.49%     1.96%     2.51%
Portfolio Turnover
  Rate..................      72%       64%       52%       73%       27%       32%       43%       31%       42%       38%
- -------------------------------------------------------------------------------------------------
YIELD AND                 From time-to-time the Fund may advertise its yield and total return.
TOTAL RETURN              Both yield and total return figures are based on historical earnings
                          and are not intended to indicate future performance. The "total return"
                          of the Fund refers to the average annual compounded rates of return
                          over one-, five-and ten-year periods or for the life of the Fund (as
                          stated in the advertisement) that would equate an initial amount
                          invested at the beginning of a stated period to the ending redeemable
                          value of the investment, assuming the reinvestment of all dividend and
                          capital gains distributions.
                          The "30-day yield" of the Fund is calculated by dividing 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 net investment income earned over 30 days is compounded monthly
                          for six months and then annualized. Methods used to calculate
                          advertised yields are standardized for all stock and bond mutual funds.
                          However, these methods differ from the accounting methods used by the
                          Fund to maintain its books and records, and so the advertised 30-day
                          yield may not fully reflect the income paid to your own account or the
                          yield reported in the Fund's reports to shareholders.
- -------------------------------------------------------------------------------------------------
INVESTMENT                The Fund is an open-end diversified investment company. The objective
OBJECTIVE                 of the Fund is to provide long-term growth of capital by investing
                          primarily in common stocks. Dividend income is incidental to this
                          objective. There is no assurance that the Fund will achieve its stated
                          objective.
- -------------------------------------------------------------------------------------------------
</TABLE>
 
                                        3
<PAGE>   31
 
   
<TABLE>
<S>                       <C>
INVESTMENT                The Fund invests primarily in the equity securities of growth
POLICIES                  companies. Under normal circumstances, at least 65% of the Fund's
THE FUND INVESTS          assets will be invested in such securities. The Fund is managed without
PRIMARILY IN              regard to tax ramifications. The Fund will generally invest in a
"GROWTH STOCKS"           diversified portfolio of common stocks but may also, from time-to-time,
                          hold securities that are convertible into common stocks.
                          The Fund is expected to invest a majority of its assets in "established
                          growth companies" -- i.e., larger capitalization firms that have
                          generally exhibited above-average rates of growth in sales and earnings
                          over an extended period. The Fund may also invest in "emerging growth
                          companies" -- expanding firms with generally smaller stock market
                          capitalizations. Finally, the Fund may hold investments in "cyclical
                          growth and other companies." These are firms which, while they may not
                          have a history of stable long-term growth, are nonetheless expected to
                          represent attractive investments.
                          The Fund employs three independent investment advisers, each of which
                          independently chooses common stock investments for the Fund. Wellington
                          Management Company, which is currently responsible for approximately
                          40% of the Fund's investments, utilizes traditional methods of security
                          selection, including fundamental company research and relative
                          valuation techniques, in selecting growth stocks for the Fund. In
                          contrast, Franklin Portfolio Associates Trust and Husic Capital
                          Management, which are responsible for approximately 33% and 13%,
                          respectively, of the Fund's investments, are "quantitative" investment
                          managers. They utilize computerized techniques designed to
                          track -- and, if possible, outperform -- the returns of a specific
                          standard, the Growth Fund Stock Index. The Growth Fund Stock Index, a
                          benchmark calculated by Morningstar, Inc., is a measure of the
                          composite performance of the common stock holdings of the 50 largest
                          growth mutual funds.
                          In addition to investing in common stocks, the Fund is also authorized
                          to invest in certain short-term fixed income securities as cash
                          reserves and to use stock index futures and options to a limited
                          extent. See "Implementation of Policies" for a description of these and
                          other investment practices of the Fund.
                          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.
- -------------------------------------------------------------------------------------------------
INVESTMENT                As a mutual fund investing primarily in common stocks, the Fund is
RISKS                     subject to market risk -- i.e., the possibility that common stock
THE FUND IS SUBJECT       prices will decline over short or even extended periods. The U.S. stock
TO STOCK MARKET RISK      market tends to be cyclical, with periods when stock prices generally
                          rise and periods when prices generally decline.
                          To illustrate the volatility of stock prices, the following table sets
                          forth the extremes for stock market returns as well as the average
                          return for the period from
</TABLE>
    
 
                                        4
<PAGE>   32
<TABLE>
<S>                       <C>
                          1926 to 1993, as measured by the Standard & Poor's 500 Composite Stock
                          Price Index:
</TABLE>

<TABLE>
<CAPTION>
                                               U.S. STOCK MARKET RETURNS (1926-1993)
                                                    OVER VARIOUS TIME HORIZONS
                                       1 YEAR     5 YEARS     10 YEARS     20 YEARS
                                       ------     -------     --------     --------
                            <S>        <C>        <C>         <C>          <C>
                            Best       +53.9 %     +23.9%       +20.1%       +16.9%
                            Worst      -43.3       -12.5        - 0.9        + 3.1
                            Average    +12.3       +10.3        +10.6        +10.6
                          As shown, from 1926 to 1993, common stocks have provided an annual
                          total return (capital appreciation plus dividend income), on average,
                          of +12.3%. While this average return can be used as a guide for setting
                          reasonable expectations for future stock market returns, it may not be
                          useful for forecasting future returns in any particular period, as
                          stock returns are quite volatile from year to year.
                          The chart above should not be viewed as a representation of future
                          investment performance of the stock market or the Fund. The illustrated
                          returns represent historical investment performance, which may be a
                          poor guide to future returns. Also, stock market indexes are based on
                          unmanaged portfolios of securities before transaction costs and other
                          expenses. Such costs reduce the relative performance of the Fund and
                          other "real world" portfolios. Finally, given its emphasis on "growth
                          stock" investments, the Fund is likely to differ significantly in terms
                          of portfolio composition and investment performance from broad market
                          averages like the S&P 500.
- -------------------------------------------------------------------------------------------------
WHO SHOULD                The Fund is designed for investors who have the perspective, patience
INVEST                    and financial ability to assume above-average interim investment risk
INVESTORS SEEKING         in pursuit of long-term capital growth. Because of the risks associated
LONG-TERM GROWTH          with common stock investments, the Fund is intended to be a long-term
                          investment vehicle and is not designed to provide investors with a
                          means of speculating on short-term stock market movements. 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 reserves the right to suspend the offering of
                          its shares. Since the Fund will focus on common stocks that offer
                          below-average levels of current income, greater-than-average investment
                          risk -- for a common stock fund -- is likely. The Fund's share price is
                          expected to be volatile.
                          No assurance can be given that the Fund will attain its objective or
                          that shareholders will be protected from the risk of loss that is
                          inherent in equity investing. Investors may wish to reduce the
                          potential risk of investing in the Fund by purchasing shares on a
                          periodic basis (dollar-cost averaging) rather than making an investment
                          in one lump sum.
</TABLE>
 
                                        5
<PAGE>   33
   
<TABLE>
<S>                       <C>
                          Investors should not consider the Fund a complete investment program,
                          but should also maintain holdings in investments with different risk
                          characteristics, such as bonds and money market instruments. Investors
                          may also wish to complement an investment in the Fund with other types
                          of common stock investments.
- -------------------------------------------------------------------------------------------------
IMPLEMENTATION            The Fund follows a number of distinctive investment practices in an
OF POLICIES               effort to achieve its investment objective.
A PORTION OF THE          Two of the Fund's investment advisers, Franklin Portfolio Associates
FUND'S ASSETS ARE         Trust ("FPA") and Husic Capital Management ("Husic"), use quantitative
MANAGED USING             investment techniques in managing their respective portions of the
QUANTITATIVE              Fund's common stock investments. For the portfolio of securities they
TECHNIQUES                manage, FPA and Husic independently seek to track and, if possible,
                          outperform the investment returns of the Growth Fund Stock Index.
                          Currently, FPA and Husic are responsible for approximately 33% and 13%,
                          respectively, of the Fund's investments.
                          The Growth Stock Fund Index (the "Index") represents the composite
                          common stock portfolio of the 50 largest growth mutual funds, as
                          calculated by Morningstar, Inc. ("Morningstar"), an independent company
                          which provides mutual fund statistics. The 50 mutual funds included in
                          that Index are determined annually (as of December 31) by Morningstar.
                          For the two quantitative investment managers (FPA and Husic), the Index
                          is an essential tool in developing portfolios that will be designed to
                          track and, hopefully, outperform the Index. For Wellington Management
                          Company, the composition of the Index serves as a guideline for setting
                          portfolio policy. For all three investment advisers, the Index is
                          utilized as a benchmark for determining incentive/penalty investment
                          advisory fees. See "Investment Advisers" and the Statement of
                          Additional Information for further information on the Index and its use
                          as a benchmark for incentive/penalty fees.
THE FUND MAY INVEST       Although it normally seeks to remain substantially fully invested in
IN SHORT-TERM FIXED       equity securities, the Fund may invest temporarily in certain
INCOME SECURITIES         short-term fixed income securities. Such securities may be used to
                          invest uncommitted cash balances, to maintain liquidity to meet
                          shareholder redemptions, or to take a temporarily defensive position
                          against potential stock market declines. These securities include:
                          obligations of the United States Government and its agencies or
                          instrumentalities; commercial paper, bank certificates of deposit, and
                          bankers' acceptances; and repurchase agreements collateralized by these
                          securities. Approximately 5% of the Fund's net assets are expected to
                          be held as cash reserves, which will be managed by The Vanguard Group,
                          Inc. at no charge to the Fund.
THE FUND MAY USE          The Fund may utilize stock futures contracts and options to a limited
FUTURES CONTRACTS         extent. Specifically, the Fund may enter into futures contracts
AND OPTIONS               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 transactions only to the extent that obligations
                          under such contracts or transactions represent not more than 20% of the
                          Fund's assets.
</TABLE>
     
                                        6
<PAGE>   34
   
<TABLE>
<S>                       <C>
FUTURES CONTRACTS AND     The primary risks associated with the use of futures contracts and
OPTIONS POSE CERTAIN      options are: (i) imperfect correlation between the change in market
RISKS                     value of the stocks 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.
                          The risk of loss in trading futures contracts in some strategies can be
                          substantial, due both to the low margin deposits required and the
                          extremely high degree of leverage involved in futures pricing. As a
                          result, a relatively small price movement in a futures contract may
                          result in immediate and substantial loss (or gain) to the investor.
                          When investing in futures contracts, the Fund will segregate cash or
                          cash equivalents in the amount of the underlying obligation.
                          Futures contracts and options may be used for several reasons: to
                          maintain cash reserves while simulating full investment, to facilitate
                          trading, to reduce transaction costs, or to seek higher investment
                          returns when a futures contract is priced more attractively than the
                          underlying equity security or index. While futures contracts and
                          options can be used as leveraged investments, the Fund may not use
                          futures contracts or options transactions to leverage its net assets.
THE FUND MAY LEND         The Fund may lend its investment securities on a short-term or
ITS SECURITIES            long-term basis to qualified institutional investors for the purpose 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.
BORROWING                 The Fund may borrow money, subject to the limits set forth in the
                          section "Investment Limitations," for temporary or emergency purposes,
                          including the meeting of redemption requests which might otherwise
                          require the untimely disposition of securities.
PORTFOLIO TURNOVER        Although it generally seeks to invest for the long term, the Fund
IS NOT EXPECTED TO        retains the right to sell securities irrespective of how long they have
EXCEED 100%               been held. It is anticipated that the annual portfolio turnover of the
                          Fund will not exceed 100%. A turnover rate of 100% would occur, for
                          example, if all of the securities of the Fund were replaced within one
                          year.
- -------------------------------------------------------------------------------------------------
INVESTMENT                The Fund has adopted certain limitations on its investment practices.
LIMITATIONS               Specifically, the Fund will not:
THE FUND HAS ADOPTED      (a) with respect to 75% of the value of its total assets, invest more
CERTAIN FUNDAMENTAL       than 5% of its assets in the securities of any single company;
LIMITATIONS               (b) with respect to 75% of the value of its total assets, purchase more
                          than 10% of the voting securities of any issuer;
</TABLE>
    
 
                                        7
<PAGE>   35
<TABLE>
<S>                       <C>
                          (c) invest more than 25% of its assets in any one industry; and
                          (d) borrow money, except from banks (or through reverse repurchase
                              agreements) for temporary or emergency (not leveraging) purposes, and
                              then not in an amount exceeding 10% 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 net assets, the Fund will not
                              make any additional investments.
                          These investment limitations are considered at the time investment
                          securities are purchased. The limitations described here and in the
                          Statement of Additional Information may be changed only with the
                          approval of a majority of the Fund's shareholders.
- -------------------------------------------------------------------------------------------------
MANAGEMENT                The Fund is a member of The Vanguard Group of Investment Companies, a
OF THE FUND               family of 32 investment companies with 78 distinct mutual fund
VANGUARD ADMINISTERS      portfolios and total assets in excess of $120 billion. Through their
AND DISTRIBUTES           jointly owned subsidiary, The Vanguard Group, Inc. ("Vanguard"), the
THE FUND                  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 1993, the average expense ratio
                          (annual costs including advisory fees divided by total net assets) for
                          the Vanguard funds amounted to approximately .30% compared to an
                          average of 1.02% for the mutual fund industry (data provided by Lipper
                          Analytical Services).
                          The Officers of the 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 the Directors
                          and Officers of the Fund and a statement of their present positions and
                          principal occupations during the past five years can be found in the
                          Statement of Additional Information.
                          Vanguard employs a supporting staff of management and administrative
                          personnel needed to provide the requisite services to the funds and
                          also furnishes the funds with necessary office space, furnishings and
                          equipment. Each fund pays its share of Vanguard's net expenses, which
                          are allocated among the funds under methods approved by the Board of
                          Directors (Trustees) of each fund. In addition, each fund bears its own
                          direct expenses, such as legal, auditing and custodian fees.
                          Vanguard provides distribution and marketing services to the funds. The
                          funds are available on a no-load basis (i.e., there are no sales
                          commissions or 12b-1 fees).
- -------------------------------------------------------------------------------------------------
INVESTMENT                The Fund currently employs three investment advisers: Wellington
ADVISERS                  Management Company ("WMC"), 75 State Street, Boston, MA 02109; Franklin
THE FUND EMPLOYS          Portfolio Associates Trust ("FPA"), One Post Office Square, Boston, MA
THREE INDEPENDENT         02109; and Husic Capital Management ("Husic"), 585 Skippack Pike, Blue
INVESTMENT ADVISERS       Bell, PA 19422. Prior to April 24, 1990, WMC was the sole investment
                          adviser to the Fund (then known as W.L. Morgan Growth Fund). FPA and
                          Husic were added as advisers to the Fund on that date.
</TABLE>
 
                                        8
<PAGE>   36
   
<TABLE>
<S>                       <C>
                          The proportion of the net assets of the Fund managed by each adviser
                          was established by the Board of Directors, and may be changed in the
                          future by the Board of Directors as circumstances warrant. Presently
                          WMC is responsible for approximately 40% of the Fund's investments; FPA
                          and Husic are responsible for 33% and 13%, respectively. (The cash
                          portion of the Fund's net assets is managed by The Vanguard Group, Inc.
                          at no charge to the Fund.)
                          The Fund has entered into investment advisory agreements with WMC, FPA,
                          and Husic which provide that the advisers manage the investment and
                          reinvestment of the Fund's assets and continuously review, supervise
                          and administer the Fund's investment program. The advisers discharge
                          their responsibilities subject to the control of the Officers and
                          Directors of the Fund.
. . . WELLINGTON          WMC is a professional investment advisory firm which globally provides
MANAGEMENT                services to investment companies, institutions, and individuals. Among
COMPANY (WMC)             the clients of WMC are 12 of the 32 investment companies of The
                          Vanguard Group. As of December 31, 1993, WMC held discretionary
                          management authority with respect to approximately $82.8 billion of
                          assets. WMC and its predecessor organizations have provided advisory
                          services to investment companies since 1933 and to investment
                          counseling clients since 1960.
                          Frank V. Wisneski and Nancy T. August, Senior Vice Presidents of WMC,
                          serve as portfolio managers of the assets of the Fund assigned to WMC.
                          Each separately oversees one-half of the assets assigned to WMC. Mr.
                          Wisneski, who has been employed at WMC for 22 years, served as the sole
                          portfolio manager of the Fund from September 1979 to December 1989. At
                          that time, the responsibility for approximately one-half of the Fund's
                          assets was transferred to Ms. August. In addition to her work for the
                          Fund, Ms. August, who has also been employed at WMC for 22 years,
                          oversees various investment portfolios with objectives and policies
                          similar to those of the Fund. In managing the assets assigned to WMC,
                          Mr. Wisneski and Ms. August are supported by research and other
                          investment services provided by the professional staff of WMC.
                          The Fund pays WMC a basic advisory fee calculated by applying varying
                          percentage rates to the average net assets of the Fund managed by WMC.
                          The basic fee schedule is as follows:
</TABLE>
    
 
<TABLE>
<CAPTION>
                            NET ASSETS         RATE
                        ------------------    -------
                        <S>                   <C>
                        First $50 million      0.325%
                        Next  $100 million     0.225%
                        Over  $150 million     0.150%
                          This basic advisory fee may be increased or decreased by applying an
                          adjustment formula ("incentive/penalty fee") based on WMC's investment
                          performance relative to the investment record of Growth Fund Stock
                          Index. Under the incentive/ penalty fee schedule, the basic fee payable
                          to WMC may be increased or decreased by as much as .075% depending on
                          the investment performance of the equity investments managed by WMC.
</TABLE>
 
                                        9
<PAGE>   37
<TABLE>
<S>                       <C>
                          Prior to April 24, 1990 WMC served as sole investment adviser to the
                          Fund. At that time the Standard & Poor's 500 Composite Stock Price
                          Index (the "S&P 500") was used as the benchmark for determining any
                          incentive/penalty fee paid to WMC. However, while the S&P 500 does
                          serve as a broad gauge of stock market performance, it does not
                          directly measure the investment performance of "growth stocks," the
                          primary investments of the Fund. To assess the performance of its
                          advisers relative to comparable "growth stock" investments, the Fund
                          has adopted as a benchmark for incentive/penalty fees the Growth Fund
                          Stock Index, an index of the equity holdings of the 50 largest growth
                          stock mutual funds.
. . . FRANKLIN            FPA is a professional investment advisory firm which specializes in the
  PORTFOLIO               management of common stock portfolios through the use of quantitative
ASSOCIATES (FPA)          investment models. Founded in 1982, FPA, a Massachusetts business
                          trust, is a wholly owned subsidiary of Mellon Financial Services
                          Corporation #1, which itself is a wholly owned subsidiary of Mellon
                          Bank Corporation. As of December 31, 1993, FPA provided investment
                          advisory services with respect to approximately $5.12 billion of client
                          assets, including $529.9 million in assets for Vanguard Quantitative
                          Portfolios, Inc., another mutual fund member of The Vanguard Group.
                          FPA employs proprietary computer models in selecting individual equity
                          securities and in structuring investment portfolios for its clients,
                          including the Fund. John J. Nagorniak, President of FPA, has been
                          designated as the portfolio manager of the assets of the Fund assigned
                          to FPA; he is responsible for overseeing the application of FPA's
                          quantitative techniques to those assets. Mr. Nagorniak and the other
                          investment principals of FPA are responsible for the ongoing develop-
                          ment and enhancement of FPA's quantitative investment techniques.
                          The Fund pays FPA a basic advisory fee calculated by applying varying
                          percentage rates to the average net assets of the Fund managed by FPA.
                          The basic fee schedule is as follows:
</TABLE>
 
<TABLE>
<CAPTION>
                            NET ASSETS         RATE
                        ------------------    -------
                        <S>                   <C>
                        First $100 million     0.250%
                        Next  $200 million     0.200%
                        Over  $300 million     0.150%
</TABLE>
 
   
<TABLE>
<S>                       <C>
                          This basic advisory fee may be increased or decreased by applying an
                          incentive/ penalty fee based on FPA's investment performance relative
                          to the investment record of the Growth Fund Stock Index. Under the
                          incentive/penalty fee schedule, the basic fee payable to FPA may be
                          increased or decreased by as much as .10% depending on the investment
                          performance of the equity investments managed by FPA.
. . . AND HUSIC CAPITAL   Vanguard/Morgan Growth Fund also employs Husic Capital Management
MANAGEMENT (HUSIC)        ("Husic"), 555 California Street, Suite 2900, San Francisco, California
                          94104 as an investment adviser for approximately 13% of its
                          investments. Husic is a professional investment advisory firm which
                          specializes in the management of common stock portfolios through the
                          use of quantitative investment models.
                          For the services provided by Husic under the investment advisory
                          agreement the Fund will pay Husic a basic fee at the end of each fiscal
                          quarter, calculated by
</TABLE>
    
 
                                       10
<PAGE>   38
 
<TABLE>
<S>                       <C>
                          applying a quarterly rate, based on the following annual percentage
                          rates, to the average month-end net assets of the Husic Portfolio for
                          the quarter:
</TABLE>
 
<TABLE>
<CAPTION>
                            NET ASSETS         RATE
                        ------------------    ------
                        <S>                   <C>
                        First $25 million      0.40%
                        Next $125 million      0.35%
                        Next $350 million      0.25%
                        Next $500 million      0.20%
                        Over $1 billion        0.15%
</TABLE>
 
   
<TABLE>
<S>                       <C>
                          Effective with the quarter ending September 30, 1994, the basic fee
                          paid to Husic, as provided above, may be increased or decreased by
                          applying an incentive/penalty fee based on the investment performance
                          of the Husic Portfolio relative to the investment record of the Growth
                          Fund Stock Index ("Growth Index"). Under the incentive/penalty fee
                          schedule, the basic fee payable to Husic may be increased or decreased
                          by as much as 75% of the basic fee depending on the investment
                          performance of the equity investment managed by Husic.
                          Under rules of the Securities and Exchange Commission, the
                          incentive/penalty fee structure will not be fully operable until the
                          quarter ending September 30, 1996, and, until that date, will be
                          calculated according to certain transition rules. See the Statement of
                          Additional Information for a detailed description of the incentive/
                          penalty fee schedule for Husic and the applicable transition rules.
                          For the fiscal year ended December 31, 1993, the aggregate investment
                          advisory fees paid by Vanguard/Morgan Growth Fund represented an
                          effective annual rate of .18 of 1% of average net assets, before a net
                          decrease of .03 of 1% based on performance. The investment advisory
                          fees paid by the Fund for this period to WMC, FPA and Husic represented
                          an effective annual rate of .17%, .23% and .37% of 1%, respectively, of
                          the average net assets managed by WMC, FPA and Husic. The Fund also
                          paid an investment advisory fee to Roll and Ross Asset Management
                          Corporation ("R&R"), 585 Skippack Pike, Blue Bell, Pa 19422, for the
                          period January 1, 1993 to June 30, 1993 when R&R resigned as investment
                          adviser to the Fund. The investment advisory fees paid to R&R
                          represented an effective annual rate of .39 of 1% of the average assets
                          managed by R&R for this period.
VANGUARD MANAGES          Vanguard's Core Management Group provides investment advisory services
A PORTION OF THE          on an at-cost basis with respect to a portion of the Fund's assets
FUND'S ASSETS ON          (currently approximately 9%). The Core Management Group also provides
AN AT-COST BASIS          investment advisory services to several Vanguard Funds and to several
                          indexed separate accounts. Total assets under management by the Core
                          Management Group were approximately $16.4 billion as of December 31,
                          1993. The portion of the Fund allocated to the Core Management Group is
                          managed using computerized, quantitative techniques based on a value
                          index constructed to approximate the aggregate fundamental
                          characteristics of a typical broadly diversified growth fund such as
                          Vanguard/Morgan Growth Fund. For further information concerning the
                          index, please refer to the Statement of Additional Information. The
                          Core Management Group is supervised by the Officers of the Fund.
</TABLE>
    
 

 
                                       11
<PAGE>   39
   
<TABLE>
<S>                       <C>
                          WMC, FPA, Husic and Vanguard's Core Management Group are authorized to
                          select brokers or dealers to execute the purchase and sale of the Fund's portfolio
                          securities, and direct the advisers to use their 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 their determinations.
                          The Fund has authorized WMC, FPA, Husic and Vanguard's Core Management
                          Group to pay higher commissions in recognition of brokerage services
                          felt necessary for the achievement of better execution, provided the
                          advisers believe this to be in the best interests of the Fund. Although
                          the Fund does not market its shares through intermediary brokers or
                          dealers, the Fund's advisers 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 13 provides investment results for the Fund for
RECORD                    several periods throughout the Fund's lifetime. The results shown
                          represent "total return" investment performance, which assumes the
                          reinvestment of all capital gains and income dividends for the
                          indicated periods. Also included is comparative information with
                          respect to the unmanaged Standard & Poor's 500 Composite Stock Price
                          Index, a widely-used barometer of stock market activity, and the
                          Consumer Price Index, a statistical measure of changes in the prices of
                          goods and services. The table does 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.
</TABLE>
    
 

 
                                       12
<PAGE>   40
 
<TABLE>
<CAPTION>
                                                    AVERAGE ANNUAL RETURN FOR
                                                   VANGUARD/MORGAN GROWTH FUND
                        FISCAL PERIODS     -------------------------------------------
                            ENDED          VANGUARD/MORGAN     S&P 500      CONSUMER
                           12/31/93          GROWTH FUND        INDEX      PRICE INDEX
                        --------------     ---------------     -------     -----------
                        <S>                <C>                 <C>         <C>
                        1 Year                  + 7.3%          +10.1%         +2.7%
                        5 Years                 +12.9           +14.5          +3.9
                        10 Years                +12.0           +14.9          +3.7
                        Lifetime*               +11.2           +10.5          +5.8
</TABLE>
                        *December 31, 1968 to December 31, 1993.
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------
<S>                       <C>
DIVIDENDS,                The Fund expects to pay dividends annually from ordinary income. Net
CAPITAL GAINS             capital gains distributions, if any, will also be made annually.
AND TAXES                 Dividend and capital gains distributions may be automatically
THE FUND PAYS             reinvested in additional shares. The Fund is managed without regard to
DIVIDENDS AND ANY         tax ramifications. The Fund intends to continue to qualify for taxation
CAPITAL GAINS             as a "regulated investment company" under the Internal Revenue Code so
ANNUALLY                  that it will not be subject to federal income tax to the extent its
                          income is distributed to shareholders.
                          If you utilize the Fund as an investment option in an
                          employer-sponsored retirement savings plan, dividend and capital gains
                          distributions from the Fund ordinarily will not be subject to current
                          taxation, but will accumulate on a tax-deferred basis. In general,
                          employer-sponsored retirement and savings plans are governed by complex
                          tax rules. If you participate in such a plan, consult your plan
                          administrator, your plan's Summary Plan Description, or a professional
                          tax adviser regarding the tax consequences of your participation in the
                          plan and of any plan contributions or withdrawals.
- -------------------------------------------------------------------------------------------------
THE SHARE PRICE           The Fund's share price or "net asset value" per share is determined by
OF THE FUND               dividing the total market value of the Fund's investments and other
                          assets, less any liabilities, by the number of outstanding shares of
                          the Fund. Net asset value per share is determined once daily at the
                          close of regular trading on the New York Stock Exchange (generally 4:00
                          p.m. Eastern time) on each day that the Exchange is open for business.
                          Portfolio securities that are listed on a securities exchange are
                          valued at the last quoted sales price on the day the valuation is made.
                          Price information on listed securities is taken from the exchange where
                          the security is primarily traded. Securities which are listed on an
                          exchange and which are not traded on the valuation date are valued at
                          the mean between the latest quoted bid and ask prices. Unlisted
                          securities for which market quotations are readily available are valued
                          at the latest quoted bid price. Other assets and securities for which
                          no quotations are readily available are valued at fair value as
                          determined in good faith by the Directors. Securities may be valued on
                          the basis of prices provided by a pricing service when such prices are
                          believed to reflect the fair market value of such securities.
                          The Fund's share price can be found daily in the mutual fund listings
                          of most major newspapers under the heading of The Vanguard Group.
- -------------------------------------------------------------------------------------------------
</TABLE>
 
                                       13
<PAGE>   41
<TABLE>
<S>                       <C>
GENERAL                   The Fund is a Maryland corporation. The Articles of Incorporation
INFORMATION               permit the Directors to issue 150,000,000 shares of common stock, with
                          a $.10 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
                          serves as independent accountants for the Fund and will audit its
                          financial statements annually. The Fund is not involved in any
                          litigation.
- -------------------------------------------------------------------------------------------------
</TABLE>
 
                                       14
 
<PAGE>   42
<TABLE>
<S>                       <C>
                                          SERVICE GUIDE
PARTICIPATING IN          The Fund is available as an investment option in your retirement or
YOUR PLAN                 savings plan. The administrator of your plan or your employee benefits
                          office can provide you with detailed information on how to participate
                          in your plan and how to elect the Fund as an investment option.
                          If you have any questions about the Fund, including the Fund's
                          investment objective, policies, risk characteristics or historical
                          performance, please contact Participant Services (1-800-523-1188).
                          If you have questions about your account, contact your plan
                          administrator or the organization which provides recordkeeping services
                          for your plan.
                          -----------------------------------------------------------------------
INVESTMENT OPTIONS        You may be permitted to elect different investment options, alter the
AND ALLOCATIONS           amounts contributed to your plan, or change how contributions are
                          allocated among your investment options in accordance with your plan's
                          specific provisions. See your plan administrator or employee benefits
                          office for more details.
                          -----------------------------------------------------------------------
TRANSACTIONS IN           Contributions, exchanges or redemptions of the Fund's shares are
FUND SHARES               effective when received in "good order" by Vanguard. "Good order" means
                          that complete information on the contribution, exchange or redemption
                          and the appropriate monies have been received by Vanguard.
                          -----------------------------------------------------------------------
MAKING EXCHANGES          Your plan may allow you to exchange monies from one investment option
                          to another. However, the Fund reserves the right to refuse any exchange
                          purchase request. Check with your plan administrator for details on the
                          rules governing exchanges in your plan. Certain investment options,
                          particularly company stock or investment contracts, may be subject to
                          unique restrictions.
                          Before making an exchange, you should consider the following:
                          - If you are making an exchange to another Vanguard Fund option, please
                          read the Fund's prospectus. Contact Participant Services
                            (1-800-523-1188) for a copy.
                          - Exchanges are accepted by Vanguard only as permitted by your plan.
                          Your plan administrator can explain how frequently exchanges are
                            allowed.
- -------------------------------------------------------------------------------------------------
</TABLE>
 
                                       15
 
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- --------------------------------------------------------------------------------
 
<TABLE>
<S>   <C>                            <C>                          <C>
            (LOGO)                                                                             (LOGO)
      -----------------------------                                            I  N  S  T  I  T  U  T  I  O  N  A  L
      THE VANGUARD GROUP                                                            P  R  O  S  P  E  C  T  U  S
      OF INVESTMENT
      COMPANIES                                                                            APRIL 27, 1994
      Vanguard Financial Center
      P.O. Box 2900
      Valley Forge, PA 19482
      INSTITUTIONAL PARTICIPANT
          SERVICES DEPARTMENT:
      1-800-523-1188
      TRANSFER AGENT:
      The Vanguard Group, Inc.
      Vanguard Financial Center
      Valley Forge, PA 19482
                                                                                               (LOGO)      
</TABLE>
IO26
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