VANGUARD VARIABLE INSURANCE FUND
497, 1996-09-23
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[LOGO OF VANGUARD
VARIABLE INSURANCE                                A Member of The Vanguard Group
FUND APPEARS HERE]
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PROSPECTUS--APRIL 29, 1996; REVISED SEPTEMBER 25, 1996     
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INVESTMENT         Vanguard Variable Insurance Fund (the "Fund") is an open-
OBJECTIVES AND     end diversified investment company. The Fund is intended
POLICIES           exclusively as an investment vehicle for variable annuity
                   or variable life insurance contracts offered by the sepa-
                   rate accounts of various insurance companies. The Fund of-
                   fers nine distinct Portfolios.
 
                   The MONEY MARKET PORTFOLIO seeks to provide current income
                   and a stable net asset value of $1.00 per share by invest-
                   ing in high-quality money market instruments. AN INVESTMENT
                   IN THE PORTFOLIO IS NEITHER INSURED NOR GUARANTEED BY THE
                   U.S. GOVERNMENT AND THERE CAN BE NO ASSURANCE THAT THE
                   PORTFOLIO WILL BE ABLE TO MAINTAIN A STABLE NET ASSET VALUE
                   OF $1.00 PER SHARE. The HIGH-GRADE BOND PORTFOLIO seeks to
                   duplicate the total return of publicly-traded, investment
                   grade fixed-income securities as represented by a broad in-
                   vestment grade bond index. The HIGH YIELD BOND PORTFOLIO
                   seeks to provide a high level of current income by invest-
                   ing in a diversified portfolio of high-yielding, lower
                   quality corporate debt securities (commonly referred to as
                   "junk bonds"). The BALANCED PORTFOLIO seeks to provide cap-
                   ital growth and a reasonable level of current income by in-
                   vesting in a diversified portfolio of common stocks and
                   bonds. The objective of the EQUITY INCOME PORTFOLIO is to
                   provide a high level of current income by investing princi-
                   pally in dividend-paying equity securities. The EQUITY IN-
                   DEX PORTFOLIO seeks to parallel the investment results of
                   the Standard & Poor's 500 Composite Stock Price Index by
                   investing in common stocks included in the Index. The
                   GROWTH PORTFOLIO seeks to provide long-term capital appre-
                   ciation by investing in equity securities of companies
                   based in the United States. The SMALL COMPANY GROWTH PORT-
                   FOLIO seeks to provide long term growth in capital by in-
                   vesting primarily in equity securities of small companies
                   deemed to have favorable prospects for growth. Dividend in-
                   come is expected to be incidental. The INTERNATIONAL PORT-
                   FOLIO seeks to provide long-term capital appreciation by
                   investing in equity securities of companies based outside
                   the United States. There is no assurance that a Portfolio
                   will achieve its objective. Shares of the Fund are neither
                   insured nor guaranteed by any agency of the U.S. Govern-
                   ment, including the FDIC.
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OPENING AN         Shares of the Portfolios are sold exclusively to separate
ACCOUNT            accounts of insurance companies that offer variable annuity
                   or variable life insurance contracts. To open an account
                   and purchase shares of a Portfolio, please see the prospec-
                   tus for the insurance company separate account governing
                   the variable annuity or variable life insurance contract.
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ABOUT THIS         This Prospectus sets forth concisely the information you
PROSPECTUS         should know about the Fund. It should be retained for fu-
                   ture reference. You should read this Prospectus in conjunc-
                   tion with the prospectus describing the related insurance
                   company separate account. A "Statement of Additional Infor-
                   mation" containing additional information about the Fund
                   has been filed with the Securities and Exchange Commission.
                   Such Statement is dated April 29, 1996, and has been incor-
                   porated by reference into this Prospectus. A copy may be
                   obtained without charge by writing to the Fund or by call-
                   ing the insurance company sponsoring the variable life in-
                   surance or variable annuity contract.
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TABLE OF CONTENTS 
<TABLE>
<CAPTION>
                                                                       Page
<S>                                                                    <C>
Highlights............................................................   2
Financial Highlights..................................................   6
Yield and Total Return ...............................................   9
Investment Objectives.................................................  10
Investment Policies...................................................  11

<CAPTION>
                                                                       Page
<S>                                                                    <C>
Investment Risks......................................................  16
Who Should Invest.....................................................  22
Implementation of Policies............................................  23
Investment Limitations................................................  29
Management of the Fund................................................  29
Investment Advisers...................................................  31

<CAPTION>
                                                                       Page
<S>                                                                    <C>
Dividends, Capital Gains and Taxes....................................  36
The Share Price of Each Portfolio.....................................  36
General Information...................................................  38
Shareholder Guide.....................................................  38
</TABLE>
                  
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THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE COMMISSION PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
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<PAGE>
 
                                   HIGHLIGHTS
 
INVESTMENT         Vanguard Variable Insurance Fund (the "Fund") is an open-
OBJECTIVES AND     end diversified investment company. The Fund is intended
POLICIES           exclusively as an investment vehicle for variable annuity
                   or variable life insurance contracts offered by the sepa-
                   rate accounts of various insurance companies.
 
                   The Fund offers nine Portfolios -- a money market portfo-
                   lio, a high-grade bond portfolio, a high-yield bond portfo-
                   lio, a balanced portfolio, an equity index portfolio, an
                   equity income portfolio, a growth portfolio, a small com-
                   pany growth portfolio and an international portfolio --
                    each with distinct investment objectives and policies.
 
                   MONEY MARKET PORTFOLIO -- seeks to provide a current income
                   and a stable net asset value of $1.00 per share. The Port-
                   folio invests primarily in high-quality money market in-
                   struments issued by financial institutions, nonfinancial
                   corporations, and the U.S. Government, state and municipal
                   governments and their agencies or instrumentalities, as
                   well as repurchase agreements collateralized by such secu-
                   rities.
 
                   HIGH-GRADE BOND PORTFOLIO -- seeks to parallel the invest-
                   ment results (income plus capital change) of publicly-
                   traded investment grade fixed-income securities in the ag-
                   gregate by attempting to duplicate the investment perfor-
                   mance of a broad investment grade bond index. The Portfolio
                   invests primarily in a diversified portfolio of U.S. Gov-
                   ernment, corporate and foreign dollar- denominated bonds
                   and mortgage-backed securities.
 
                   HIGH YIELD BOND PORTFOLIO -- seeks to provide a high level
                   of current income by investing in a diversified portfolio
                   of lower quality, high-yielding corporate debt securities
                   (commonly referred to as "junk bonds").
 
                   BALANCED PORTFOLIO -- seeks to provide capital growth and a
                   reasonable level of current income by investing in a diver-
                   sified portfolio of common stocks and bonds.
 
                   EQUITY INCOME PORTFOLIO -- seeks to provide a high level of
                   current income by investing principally in dividend-paying
                   equity securities.
 
                   EQUITY INDEX PORTFOLIO -- seeks to parallel the investment
                   results of the Standard & Poor's 500 Composite Stock Price
                   Index (the "S&P 500"). The Portfolio invests primarily in
                   common stocks included in the S&P 500.
 
                   GROWTH PORTFOLIO -- seeks to provide long-term capital ap-
                   preciation by investing primarily in equity securities of
                   seasoned U.S. companies with above-average prospects for
                   growth.
 
                   SMALL COMPANY GROWTH PORTFOLIO -- seeks to provide long
                   term growth in capital by investing primarily in equity se-
                   curities of small companies deemed to have favorable pros-
                   pects for growth.
 
                   INTERNATIONAL PORTFOLIO -- seeks to provide long-term capi-
                   tal appreciation by investing primarily in equity securi-
                   ties of seasoned companies located outside the United
                   States.
 
2
<PAGE>
 
                    The investment objectives and policies of the Fund's Port-
                    folios are similar to those of other Vanguard funds. The
                    Money Market Portfolio of the Fund is similar to the Prime
                    Portfolio of Vanguard Money Market Reserves; the High-
                    Grade Bond Portfolio is similar to Vanguard Bond Index
                    Fund's--Total Bond Market Portfolio; the High-Yield Bond
                    Portfolio is similar to the High Yield Corporate Portfolio
                    of the Vanguard Fixed Income Securities Fund; the Balanced
                    Portfolio is similar to Vanguard/Wellington Fund; the Eq-
                    uity Index Portfolio is similar to the 500 Portfolio of
                    Vanguard Index Trust; the Equity Income Portfolio is simi-
                    lar to the Vanguard Equity Income Fund; the Growth Portfo-
                    lio is similar to the Vanguard U.S. Growth Portfolio; the
                    Small Company Growth Portfolio is similar to the Vanguard
                    Explorer Fund; and the International Portfolio is similar
                    to the Vanguard International Growth Portfolio. Because of
                    differences in the investments held and additional admin-
                    istrative and insurance costs associated with insurance
                    company separate accounts, the Portfolios' investment per-
                    formances will differ from the performances of the corre-
                    sponding Vanguard funds.
 
                        There is no assurance that a Portfolio will achieve its
                    stated objective.                                   PAGE 10
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                    The MONEY MARKET PORTFOLIO is exposed primarily to credit
INVESTMENT RISKS    risk, the possibility that an issuer of securities will
                    fail to make timely payments of interest or principal to
                    the Portfolio. The Money Market Portfolio seeks to mini-
                    mize such risk by investing in top-rated money market in-
                    struments.
 
                    The HIGH-GRADE BOND PORTFOLIO is subject primarily to in-
                    terest rate and credit risk. The Portfolio, like the Leh-
                    man Brothers Aggregate Bond Index (the "Lehman Bond In-
                    dex") it seeks to match, is expected to maintain an aver-
                    age weighted maturity between 8 and 10 years. As a result,
                    interest rate risk -- i.e., the potential for a decline in
                    the market value of the Portfolio's fixed income securi-
                    ties due to rising interest rates -- may range from moder-
                    ate to high. Credit risk, however, should be nominal,
                    since the Portfolio invests primarily in highly rated
                    bonds and mortgage-backed securities.
 
                    The HIGH YIELD BOND PORTFOLIO is subject primarily to
                    credit risk and interest rate risk. The medium- and low-
                    grade bonds held by the Portfolio are considered specula-
                    tive because, since they are often issued by smaller, less
                    creditworthy companies or by highly leveraged (indebted)
                    firms, they are generally less able than more financially
                    stable firms to make scheduled payments of interest and
                    principal. The credit risks of bonds issued under such
                    circumstances are substantial. Interest rate risk is the
                    potential for a decline in the market value of the Portfo-
                    lio's fixed income securities due to rising
                    interest rates.
 
                    The BALANCED PORTFOLIO, with its mix of both stocks and
                    bonds, is subject to stock market risk and interest rate
                    risk. However, the Portfolio is expected to exhibit less
                    volatility than a portfolio consisting entirely of com-
                    mon stocks.
 
                    The EQUITY INCOME, EQUITY INDEX AND GROWTH PORTFOLIOS are
                    exposed to stock market risk, the possibility that stock
                    prices will decline over short or even extended periods.
                    The U.S. stock market tends to be cyclical, with
 
                                                                              3
<PAGE>
 
                   periods when stock prices generally rise and periods when
                   stock prices generally decline.
 
                   The SMALL COMPANY GROWTH PORTFOLIO is also exposed to the
                   stock market risk present in the Equity Income, Equity In-
                   dex and Growth Portfolios. In addition, small company
                   stocks, which are this Portfolio's primary investments,
                   have historically been more volatile in price than the
                   stock market as a whole.
 
                   The INTERNATIONAL PORTFOLIO is exposed to foreign stock
                   market risk which can be as volatile, if not more volatile,
                   than investments in U.S. markets. In a period when the U.S.
                   dollar generally rises against foreign currencies, the re-
                   turns on foreign stocks for a U.S. investor may be dimin-
                   ished. By contrast, in a period when the U.S. dollar gener-
                   ally declines, the returns on foreign stocks may be
                   enhanced.                                            PAGE 16
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THE VANGUARD       The Fund is a member of The Vanguard Group of Investment
GROUP              Companies, a group of more than 30 investment companies
                   with more than 90 distinct portfolios and total assets in
                   excess of $190 billion. The Vanguard Group, Inc. ("Van-
                   guard"), a subsidiary jointly owned by the Vanguard Funds,
                   provides all corporate management, administrative, distri-
                   bution, and shareholder accounting services on an at-cost
                   basis to the Funds in the Group.                     PAGE 29
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FUND EXPENSES      The Fund incurs annual operating expenses which include
                   Management, Advisory and Distribution expenses. For more
                   information please see the section entitled "Management of
                   the Fund" in this Prospectus and the "Fee Table" section of
                   the Plan's Prospectus.                               PAGE 30
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                   The Investment Advisers to the nine Portfolios in the Fund
                   are listed below:
 
INVESTMENT  
ADVISERS    
<TABLE> 
<CAPTION> 
                   PORTFOLIO                INVESTMENT ADVISER
                   ---------                ------------------
                   <S>                      <C>
                   Money Market Portfolio   Vanguard's Fixed Income Group
                   High-Grade Bond
                    Portfolio               Vanguard's Fixed Income Group
                   Equity Index Portfolio   Vanguard's Core Management Group
                   Balanced Portfolio       Wellington Management Company
                   Equity Income Portfolio  Newell Associates
                   High Yield Bond
                    Portfolio               Wellington Management Company
                   Growth Portfolio         Lincoln Capital Management Company
                   Small Company Growth
                    Portfolio               Granahan Investment Management, Inc.
                   International Portfolio  Schroder Capital Management International, Inc.
</TABLE>
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DIVIDENDS AND      The Portfolios distribute dividends and capital gains ac-
CAPITAL GAINS      cording to the schedule outlined below:
 
<TABLE>
<CAPTION>
                                                                 CAPITAL GAINS,
             PORTFOLIO                  DIVIDEND DISTRIBUTIONS   IF ANY
             ---------                  ------------------------ --------------
             <S>                        <C>                      <C>
             Money Market Portfolio     Monthly (declared daily) None
             High-Grade Bond Portfolio  Monthly (declared daily) Annually
             Equity Index Portfolio     Quarterly                Annually
             Balanced Portfolio         Quarterly                Annually
             Equity Income Portfolio    Quarterly                Annually
             High Yield Bond Portfolio  Monthly (declared daily) Annually
             Growth Portfolio           Annually                 Annually
             Small Company Growth
              Portfolio                 Annually                 Annually
             International Portfolio    Annually                 Annually
</TABLE>
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4
<PAGE>
 
TAXES              The tax consequences of your investment in the Fund depend
                   upon the specific provisions of your variable life insur-
                   ance or annuity contract. For more information, please re-
                   fer to the prospectus of the insurance company separate ac-
                   count that offers your contract.                     PAGE 36
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PURCHASING AND     You cannot purchase shares of the Fund directly, but only
SELLING SHARES     through a variable life insurance or variable annuity con-
                   tract offered through an insurance company separate ac-
                   count. Please refer to the prospectus of the insurance com-
                   pany separate account for information on how to purchase
                   and redeem shares.                                   PAGE 38
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                                                                               5
<PAGE>
 
FINANCIAL          The following financial highlights, for a share outstanding
HIGHLIGHTS         throughout each period presented, have been audited by
                   Price Waterhouse LLP, independent accountants, whose report
                   thereon was unqualified. This information should be read in
                   conjunction with the Fund's financial statements and notes
                   thereto, which, together with the remaining portions of the
                   Fund's 1995 Annual Report to Shareholders, are incorporated
                   by reference in the Statement of Additional Information and
                   in this Prospectus, and which appear, along with the report
                   of Price Waterhouse LLP, in the Fund's 1995 Annual Report
                   to Shareholders. For a more complete discussion of the
                   Fund's performance, please see the Fund's 1995 Annual Re-
                   port to Shareholders, which may be obtained without charge
                   by writing to the Fund or by calling our Vanguard Variable
                   Annuity Department at 1-800-522-5555. Please note that fi-
                   nancial highlights for the High Yield Bond and Small Com-
                   pany Growth Portfolios are not reported because these Port-
                   folios had not commenced operations prior to the date of
                   this Prospectus.
 
<TABLE>
<CAPTION>
                                     -----------------------------------------
                                            MONEY MARKET PORTFOLIO
                                     -----------------------------------------
                                                                     MAY 2+ TO
                                        YEAR ENDED SEPT. 30,         SEPT. 30,
                                       1995    1994    1993    1992       1991
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<S>                                  <C>     <C>     <C>     <C>     <C>
NET ASSET VALUE, BEGINNING OF
 PERIOD............................  $ 1.00  $ 1.00  $ 1.00  $ 1.00   $ 1.00
                                     ------  ------  ------  ------   ------
INVESTMENT OPERATIONS
 Net Investment Income.............    .056    .035    .030    .040     .023
 Net Realized and Unrealized Gain
  (Loss) on Investments............      --      --      --      --       --
                                     ------  ------  ------  ------   ------
 TOTAL FROM INVESTMENT OPERATIONS..    .056    .035    .030    .040     .023
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DISTRIBUTIONS
 Dividends from Net Investment
  Income...........................   (.056)  (.035)  (.030)  (.040)   (.023)
 Distributions from Realized
  Capital Gains....................      --      --      --      --       --
                                     ------  ------  ------  ------   ------
 TOTAL DISTRIBUTIONS...............   (.056)  (.035)  (.030)  (.040)   (.023)
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NET ASSET VALUE, END OF PERIOD.....  $ 1.00  $ 1.00  $ 1.00  $ 1.00   $ 1.00
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TOTAL RETURN.......................    5.77%   3.63%   3.05%   4.11%    2.35%**
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RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period
 (Millions)........................  $  218  $  171  $  114  $   71   $   27
Ratio of Expenses to Average Net
 Assets............................     .23%    .23%    .29%    .33%     .34%*
Ratio of Net Investment Income to
 Average Net Assets................    5.66%   3.66%   3.00%   3.90%    5.50%*
Portfolio Turnover Rate............     N/A     N/A     N/A     N/A      N/A
</TABLE>
 
* Annualized.
** Not Annualized.
+ Commencement of operations.
 
6
<PAGE>
 
 
<TABLE>
<CAPTION>
                                   ---------------------------------------------
                                          HIGH-GRADE BOND PORTFOLIO
                                   ---------------------------------------------
                                                                    APRIL 29+ TO
                                      YEAR ENDED SEPT. 30,             SEPT. 30,
                                     1995    1994     1993    1992          1991
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<S>                                <C>     <C>      <C>     <C>     <C>
NET ASSET VALUE, BEGINNING OF
 PERIOD..........................  $ 9.82  $10.94   $10.64  $10.24     $10.00
                                   ------  ------   ------  ------     ------
INVESTMENT OPERATIONS
 Net Investment Income...........    .663    .619     .636    .705       .299
 Net Realized and Unrealized Gain
  (Loss) on Investments..........    .650   (.966)    .349    .427       .240
                                   ------  ------   ------  ------     ------
 TOTAL FROM INVESTMENT
  OPERATIONS.....................   1.313   (.347)    .985   1.132       .539
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DISTRIBUTIONS
 Dividends from Net Investment
  Income.........................   (.663)  (.619)   (.636)  (.705)     (.299)
 Distributions from Realized
  Capital Gains..................      --   (.154)   (.049)  (.027)        --
                                   ------  ------   ------  ------     ------
 TOTAL DISTRIBUTIONS.............   (.663)  (.773)   (.685)  (.732)     (.299)
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NET ASSET VALUE, END OF PERIOD...  $10.47  $ 9.82   $10.94  $10.64     $10.24
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TOTAL RETURN.....................   13.83%  (3.31)%   9.64%  11.47%      5.48%**
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RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period
 (Millions)......................  $  120  $   80   $   85  $   52     $   16
Ratio of Expenses to Average Net
 Assets..........................     .29%    .24%     .29%    .32%       .40%*
Ratio of Net Investment Income to
 Average Net Assets..............    6.58%   5.98%    5.92%   6.66%      6.89%*
Portfolio Turnover Rate..........      29%     46%      73%     31%         9%
</TABLE>
 
* Annualized.
** Not Annualized.
+ Commencement of operations.
 
<TABLE>
<CAPTION>
                                     ------------------------------------------
                                               BALANCED PORTFOLIO
                                     ------------------------------------------
                                                                     MAY 23+ TO
                                        YEAR ENDED SEPT. 30,          SEPT. 30,
                                       1995    1994    1993    1992        1991
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<S>                                  <C>     <C>     <C>     <C>     <C>
NET ASSET VALUE, BEGINNING OF
 PERIOD............................  $11.33  $11.58  $10.83  $10.25    $10.00
                                     ------  ------  ------  ------    ------
INVESTMENT OPERATIONS
 Net Investment Income.............     .51     .46     .50     .51       .19
 Net Realized and Unrealized Gain
  (Loss) on Investments............    2.07    (.16)    .97     .52       .06
                                     ------  ------  ------  ------    ------
 TOTAL FROM INVESTMENT OPERATIONS..    2.58     .30    1.47    1.03       .25
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DISTRIBUTIONS
 Dividends from Net Investment
  Income...........................    (.50)   (.39)   (.69)   (.45)       --
 Distributions from Realized
  Capital Gains....................    (.08)   (.16)   (.03)     --        --
                                     ------  ------  ------  ------    ------
 TOTAL DISTRIBUTIONS...............    (.58)   (.55)   (.72)   (.45)       --
- --------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD.....  $13.33  $11.33  $11.58  $10.83    $10.25
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
TOTAL RETURN.......................   23.65%   2.67%  14.10%  10.29%     2.50%**
- --------------------------------------------------------------------------------
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RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period
 (Millions)........................  $  280  $  230  $  191  $   76    $   13
Ratio of Expenses to Average Net
 Assets............................     .36%    .34%    .39%    .42%      .51%*
Ratio of Net Investment Income to
 Average Net Assets................    4.25%   4.11%   4.45%   4.77%     5.24%*
Portfolio Turnover Rate............      26%     42%     41%     15%        3%
</TABLE>
 
* Annualized.
** Not Annualized.
+ Commencement of operations.
 
                                                                               7
<PAGE>
 
 
<TABLE>
<CAPTION>
                                    --------------------------------------------
                                             EQUITY INDEX PORTFOLIO
                                    --------------------------------------------
                                                                    APRIL 29+ TO
                                       YEAR ENDED SEPT. 30,            SEPT. 30,
                                      1995    1994    1993    1992          1991
- --------------------------------------------------------------------------------
<S>                                 <C>     <C>     <C>     <C>     <C>
NET ASSET VALUE, BEGINNING OF
 PERIOD...........................  $12.47  $12.37  $11.32  $10.45     $10.00
                                    ------  ------  ------  ------     ------
INVESTMENT OPERATIONS
 Net Investment Income............     .33     .31     .34     .26        .08
 Net Realized and Unrealized Gain
  (Loss) on Investments...........    3.26     .12    1.07     .85        .37
                                    ------  ------  ------  ------     ------
 TOTAL FROM INVESTMENT OPERATIONS.    3.59     .43    1.41    1.11        .45
- --------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment
  Income..........................    (.29)   (.23)   (.34)   (.24)        --
 Distributions from Realized
  Capital Gains...................    (.08)   (.10)   (.02)     --         --
                                    ------  ------  ------  ------     ------
 TOTAL DISTRIBUTIONS..............    (.37)   (.33)   (.36)   (.24)        --
- --------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD....  $15.69  $12.47  $12.37  $11.32     $10.45
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
TOTAL RETURN......................   29.51%   3.53%  12.68%  10.74%      4.50%**
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period
 (Millions).......................  $  276  $  186  $  165  $   85     $   24
Ratio of Expenses to Average Net
 Assets...........................     .28%    .24%    .29%    .32%       .45%*
Ratio of Net Investment Income to
 Average Net Assets...............    2.53%   2.60%   2.63%   2.84%      3.22%*
Portfolio Turnover Rate...........       2%      7%     16%      1%         5%
</TABLE>
 
* Annualized.
** Not Annualized.
+ Commencement of operations.
 
<TABLE>
<CAPTION>
                                                          ---------------------
                                                                  INTERNATIONAL
                                                                      PORTFOLIO
                                                          ---------------------
                                                          YEAR ENDED JUNE 3+ TO
                                                           SEPT. 30,  SEPT. 30,
                                                                1995       1994
- --------------------------------------------------------------------------------
<S>                                                       <C>        <C>
NET ASSET VALUE, BEGINNING OF PERIOD....................    $10.31     $10.00
                                                            ------     ------
INVESTMENT OPERATIONS
 Net Investment Income..................................       .16        .05
 Net Realized and Unrealized Gain (Loss) on Investments.       .99        .26
                                                            ------     ------
 TOTAL FROM INVESTMENT OPERATIONS.......................      1.15        .31
- --------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net Investment Income...................      (.06)        --
 Distributions from Realized Capital Gains..............        --         --
                                                            ------     ------
 TOTAL DISTRIBUTIONS....................................      (.06)        --
- --------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD..........................    $11.40     $10.31
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
TOTAL RETURN............................................     11.21%      3.10%**
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Period (Millions)....................    $   90     $   63
Ratio of Expenses to Average Net Assets.................       .54%       .30%*
Ratio of Net Investment Income to Average Net Assets....      1.67%      1.91%*
Portfolio Turnover Rate.................................        27%         0%
</TABLE>
 
* Annualized.
** Not Annualized.
+ Commencement of operations.
 
8
<PAGE>
 
 
<TABLE>
<CAPTION>
                          ---------------------------  ---------------------------
                           EQUITY INCOME PORTFOLIO         GROWTH PORTFOLIO
                          ---------------------------  ---------------------------
                           YEAR ENDED      JUNE 7+ TO    YEAR ENDED     JUNE 7+ TO
                            SEPT. 30,       SEPT. 30,    SEPT. 30,       SEPT. 30,
                            1995    1994         1993     1995    1994        1993
- -----------------------------------------------------------------------------------
<S>                       <C>     <C>      <C>         <C>      <C>     <C>
NET ASSET VALUE,
 BEGINNING OF PERIOD....  $10.05  $10.57     $10.00    $ 10.79  $10.26    $10.00
                          ------  ------     ------    -------  ------    ------
INVESTMENT OPERATIONS
 Net Investment Income..     .46     .45        .14        .16     .14       .04
 Net Realized and
  Unrealized Gain (Loss)
  on Investments........    2.02    (.63)       .54       3.26     .46       .22
                          ------  ------     ------    -------  ------    ------
 TOTAL FROM INVESTMENT
  OPERATIONS............    2.48    (.18)       .68       3.42     .60       .26
- -----------------------------------------------------------------------------------
DISTRIBUTIONS
 Dividends from Net
  Investment Income.....    (.48)   (.33)      (.11)      (.11)   (.07)       --
 Distributions from
  Realized Capital
  Gains.................    (.05)   (.01)        --         --      --        --
                          ------  ------     ------    -------  ------    ------
 TOTAL DISTRIBUTIONS....    (.53)   (.34)      (.11)      (.11)   (.07)       --
- -----------------------------------------------------------------------------------
NET ASSET VALUE, END OF
 PERIOD.................  $12.00  $10.05     $10.57     $14.10  $10.79    $10.26
- -----------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------
TOTAL RETURN............   25.69%  (1.64)%     6.81%**   32.02%   5.87%     2.60%**
- -----------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of
 Period (Millions)......  $   91  $   68     $   50    $   162  $   82    $   36
Ratio of Expenses to
 Average Net Assets.....     .39%    .34%       .39%*      .47     .38%      .43%*
Ratio of Net Investment
 Income to Average Net
 Assets.................    4.28%   4.57%      4.30%*     1.64%   1.55%     1.63%*
Portfolio Turnover Rate.      10%     18%         2%        32%     34%       10%
</TABLE>
 
* Annualized.
** Not Annualized.
+ Commencement of operations.
- --------------------------------------------------------------------------------
YIELD AND TOTAL    From time to time, a Portfolio of the Fund may advertise
RETURN             its yield and total return. Both yield and total return
                   figures are based on historical earnings and are not in-
                   tended to indicate future performance. The "total return"
                   of a Portfolio refers to the average annual compounded
                   rates of return over one-, five-, and ten-year periods or
                   for the life of the Portfolio (as stated in the advertise-
                   ment) 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 divi-
                   dend and capital gains distributions.
 
                   In accordance with industry guidelines set forth by the
                   U.S. Securities and Exchange Commission, the "30-day yield"
                   of a Portfolio is calculated by dividing net investment in-
                   come per share earned during a 30-day period by the net as-
                   set value per share on the last day of the period. Net in-
                   vestment income includes interest and dividend income
                   earned on the Portfolio's securities; it is net of all ex-
                   penses and all recurring and nonrecurring charges that have
                   been applied to all shareholder accounts. The yield calcu-
                   lation assumes that net investment income earned over 30
                   days is compounded monthly for six months and then
                   annualized. Methods used to calculate advertised yields are
                   standardized for all stock and bond mutual funds. However,
                   these methods differ from the accounting methods used by a
                   Portfolio to maintain its books and records, and so the ad-
                   vertised 30-day yield may not fully reflect the income paid
                   to your own account.
 
                   The Money Market Portfolio's "seven-day" or "current" yield
                   reflects the income earned by a hypothetical account in the
                   Portfolio during a seven-day period, expressed as an annual
                   percentage rate. The Portfolio's "effective
 
                                                                               9
<PAGE>
 
                   yield" assumes that the income over the seven-day period is
                   reinvested weekly, resulting in a slightly higher stated
                   yield through compounding.
 
                   YIELDS AND TOTAL RETURNS QUOTED FOR THE PORTFOLIOS INCLUDE
                   THE EFFECT OF DEDUCTING THE PORTFOLIOS' EXPENSES, BUT MAY
                   NOT INCLUDE CHARGES AND EXPENSES ATTRIBUTABLE TO ANY PAR-
                   TICULAR INSURANCE PRODUCT. SINCE YOU CAN ONLY PURCHASE
                   SHARES OF THE PORTFOLIOS THROUGH A VARIABLE ANNUITY OR
                   VARIABLE LIFE CONTRACT, YOU SHOULD CAREFULLY REVIEW THE
                   PROSPECTUS OF THE INSURANCE PRODUCT YOU HAVE CHOSEN FOR IN-
                   FORMATION ON RELEVANT CHARGES AND EXPENSES. EXCLUDING THESE
                   CHARGES FROM QUOTATIONS OF THE PORTFOLIOS' PERFORMANCE HAS
                   THE EFFECT OF INCREASING THE PERFORMANCE QUOTED. YOU SHOULD
                   BEAR IN MIND THE EFFECT OF THESE CHARGES WHEN COMPARING THE
                   PORTFOLIOS' PERFORMANCE TO THOSE OF OTHER MUTUAL FUNDS.
                   PLEASE REVIEW CAREFULLY THE YIELD AND TOTAL RETURN FIGURES
                   FOR THE PARTICULAR INSURANCE PRODUCT WHICH ACCOMPANY THE
                   YIELDS AND TOTAL RETURNS QUOTED FOR THE PORTFOLIOS.
- --------------------------------------------------------------------------------
INVESTMENT         The Fund is intended exclusively as an investment vehicle
OBJECTIVES         for variable annuity or variable life insurance contracts
                   offered by various insurance companies.
               
THE FUND OFFERS    The Fund offers nine distinct Portfolios--a money market
NINE DISTINCT      portfolio, a high-grade bond portfolio, a high-yield bond
PORTFOLIOS         portfolio, a balanced portfolio, an equity index portfolio,
                   an equity income portfolio, a growth portfolio, a small
                   company growth portfolio and an international portfolio:
 
                   The MONEY MARKET PORTFOLIO seeks to provide a current in-
                   come consistent with the preservation of capital and li-
                   quidity. The Portfolio also seeks to maintain a stable net
                   asset value of $1.00 per share.
 
                   The HIGH-GRADE BOND PORTFOLIO seeks to duplicate the total
                   return of publicly-traded investment grade fixed-income se-
                   curities in the aggregate by attempting to duplicate the
                   investment performance of a broad investment grade bond -
                   index.
 
                   The HIGH YIELD BOND PORTFOLIO seeks to provide a high level
                   of current income by investing in below-investment grade
                   fixed-income securities (commonly referred to as "junk
                   bonds").
 
                   The BALANCED PORTFOLIO seeks to provide capital growth and
                   a reasonable level of current income.
 
                   THE EQUITY INCOME PORTFOLIO seeks to provide a high level
                   of current income.
 
                   The EQUITY INDEX PORTFOLIO seeks to parallel the investment
                   results of the Standard & Poor's 500 Composite Stock Price
                   Index (the "S&P 500").
 
                   THE GROWTH, SMALL COMPANY GROWTH AND INTERNATIONAL PORTFO-
                   LIOS seek to provide long-term capital appreciation.
 
                   There is no assurance that a Portfolio will achieve its
                   stated objective.
- --------------------------------------------------------------------------------
 
10
<PAGE>
 
INVESTMENT         The nine Portfolios of the Fund follow distinct investment
POLICIES           policies. The Portfolios are managed without regard to tax
                   ramifications.
 
THE MONEY MARKET   The MONEY MARKET PORTFOLIO invests in the following high-
PORTFOLIO          quality money market obligations issued by financial insti-
INVESTS IN         tutions, nonfinancial corporations, and the U.S. Govern-
HIGH-QUALITY       ment, state and municipal governments and their agencies or
MONEY MARKET       instrumentalities:
SECURITIES
 
                   (1) Negotiable certificates of deposit and bankers' accept-
                       ances of U.S. banks having total assets in excess of $1
                       billion.
 
                   (2) Commercial paper (including variable amount master de-
                       mand notes) rated Prime-1 by Moody's Investors Service,
                       Inc. ("Moody's") or A-1 by Standard and Poor's Corpora-
                       tion ("Standard and Poor's") or, if unrated, issued by
                       a corporation having an outstanding debt issue rated
                       Aa3 or better by Moody's or AA- or better by Standard
                       and Poor's.
 
                   (3) Short-term corporate obligations rated Aa3 or better by
                       Moody's or AA- or better by Standard and Poor's.
 
                   (4) Short-term Eurodollar and Yankee bank obligations. Eu-
                       rodollar bank obligations are dollar-denominated cer-
                       tificates of deposit or time deposits issued outside
                       the U.S. capital markets by foreign branches of U.S.
                       banks or by foreign banks; Yankee bank obligations are
                       dollar-denominated obligations issued in the U.S. capi-
                       tal markets by foreign banks.
 
                   (5) U.S. Treasury obligations including bills, notes,
                       bonds, and other debt obligations issued by the U.S.
                       Treasury. These securities are backed by the full faith
                       and credit of the U.S. Government.
 
                   (6) Securities issued or guaranteed by agencies and instru-
                       mentalities of the U.S. Government. These include secu-
                       rities issued by the Federal Home Loan Banks, Federal
                       Land Bank, Farmers Home Administration, Farm Credit
                       Banks, Federal Intermediate Credit Bank, Federal Na-
                       tional Mortgage Association, Federal Financing Bank,
                       the Tennessee Valley Authority, and others. Such "agen-
                       cy" securities may not be backed by the full faith and
                       credit of the U.S. Government.
 
                   (7) Repurchase agreements that are collateralized by the
                       securities listed in (1), (5), and (6) above.
 
                   In addition, the money market may invest up to 10% of its
                   assets in securities that are illiquid.
 
                   The Money Market Portfolio will only invest in securities
                   that mature in 13 months or less and will maintain an aver-
                   age weighted maturity of 90 days or less.
 
THE HIGH-GRADE     The HIGH-GRADE BOND PORTFOLIO will invest in a statisti-
BOND PORTFOLIO     cally selected sample of fixed-income and mortgage-backed
INVESTS IN         securities included in the Lehman Brothers Aggregate Bond
GOVERNMENT AND     Index (the "Lehman Bond Index"). The Portfolio will invest
CORPORATE BONDS    80% or more of its assets in securities included in the
                   Lehman Bond Index, including not less than 65% of its as-
                   sets in U.S. Government or corporate bonds.
 
                                                                              11
<PAGE>
 
 
                   The Portfolio encompasses four major classes of investment
                   grade fixed income securities in the United States: U.S.
                   Treasury and agency securities, corporate debt obligations,
                   foreign dollar-denominated debt obligations, and mortgage-
                   backed securities. As of September 30, 1995, these four
                   classes represented the following proportions of the Port-
                   folio's total market value:
 
<TABLE>
                   <S>                              <C>
                   U.S. Treasury and agency
                    securities                       38%
                   Corporate debt obligations        29%
                   Foreign U.S. dollar obligations    4%
                   Mortgage-backed securities        29%
</TABLE>
 
                   Since 1991, the effective average weighted maturity of the
                   Portfolio has ranged from a high of 13.0 years to a low of
                   7.4 years; it was 8.5 years on September 30, 1995.
 
                   The Portfolio may, from time to time, substitute one type
                   of investment grade bond for another. For instance, the
                   Portfolio may hold more short-term corporate bonds (fewer
                   short U.S. Treasury bonds) than represented in the Index so
                   as to increase income. This corporate substitution strategy
                   will entail the assumption of additional credit risk; how-
                   ever, substantial diversification within the corporate sec-
                   tor should moderate issue-specific credit risk. In addi-
                   tion, current investment policy restricts corporate substi-
                   tutions to issues with less than 4 years remaining to matu-
                   rity and in aggregate no more than 15% of net assets. Over-
                   all, credit risk is expected to be very low for the Portfo-
                   lio.
 
THE HIGH YIELD     The HIGH YIELD BOND PORTFOLIO will invest in a diversified
BOND PORTFOLIO     portfolio of high-yielding corporate debt securities (so-
INVESTS IN         called "junk bonds"). Under normal circumstances, at least
LOW-QUALITY,       80% of the Portfolio's assets will be invested in high-
HIGH-RISK BONDS    yield corporate debt obligations rated at least B by
                   Moody's or Standard & Poor's or, if unrated, of comparable
                   quality as determined by the Portfolio's adviser. Not more
                   than 20% of the Portfolio's assets may be invested in debt
                   securities rated less than B or unrated, and convertible
                   securities and preferred stocks. The Portfolio may invest
                   up to 25% of its assets in cash reserves and U.S. Govern-
                   ment securities, repurchase agreements collateralized by
                   U.S. Treasury or U.S. Government agency securities under
                   unusual market conditions for temporary defensive measures.
 
                   The High Yield Bond Portfolio will not invest in securities
                   that, at the time of initial investment, are rated less
                   than Caa by Moody's or CCC by Standard & Poor's. Securities
                   that are subsequently downgraded in quality below Caa or
                   CCC may continue to be held by the Portfolio, and will be
                   sold only if the Portfolio's adviser believes it would be
                   advantageous to do so. In addition, the credit quality of
                   unrated securities purchased by the Portfolio must be, in
                   the opinion of the Portfolio's adviser, at least equivalent
                   to a Caa rating by Moody's or a CCC rating by Standard &
                   Poor's.
 
                   Securities rated less than Baa by Moody's or BBB by Stan-
                   dard & Poor's are classified as non-investment grade secu-
                   rities. Such securities carry a high degree of risk and are
                   considered speculative by the major credit rating agencies.
                   The following are excerpts from the Moody's and Standard &
                   Poor's definitions of speculative grade debt obligations:
 
12
<PAGE>
 
 
                     Moody's: Ba-rated bonds have "speculative elements,"
                     their future "cannot be considered assured," and protec-
                     tion of principal and interest is "moderate" and "not
                     well safeguarded." B-rated bonds "lack characteristics of
                     a desirable investment" and the assurance of interest or
                     principal payments "may be small." Caa-rated bonds are
                     "of poor standing" and "may be in default" or may have
                     "elements of danger with respect to principal or inter-
                     est."
 
                     Standard & Poor's: BB-rated bonds have "less near-term
                     vulnerability to default" than B- or CCC-rated securities
                     but face "major ongoing uncertainties . . . which may
                     lead to inadequate capacity" to pay interest or princi-
                     pal. B-rated bonds have a "greater vulnerability to de-
                     fault" than BB-rated bonds and the ability to pay inter-
                     est or principal will likely be impaired by adverse busi-
                     ness conditions. CCC-rated bonds have a "currently iden-
                     tifiable vulnerability to default" and, without favorable
                     business conditions, will be unable to repay interest and
                     principal.
 
                   Credit quality in the high-yield bond market can change
                   suddenly and unexpectedly, and even recently-issued ratings
                   may not fully reflect the actual risks posed by a particu-
                   lar high-yield security. For these reasons, it is the High-
                   Yield Bond Portfolio's policy not to rely primarily on rat-
                   ings issued by established credit rating agencies, but to
                   use such ratings in conjunction with the adviser's own in-
                   dependent and ongoing review of credit quality.
 
                   Although the High Yield Bond Portfolio has no present plans
                   to do so, it may invest up to 5% of its assets in non-in-
                   come-producing high-yield securities -- such as zero coupon
                   bonds, which pay interest only at maturity, or payment-in-
                   kind bonds, which pay interest in the form of additional
                   securities.
 
                   The High Yield Corporate Portfolio may also hold asset-
                   backed securities, as well as U.S. dollar denominated debt
                   securities issued by foreign governments, their agencies
                   and instrumentalities, supranational entities and companies
                   located outside the U.S. The Portfolio may also invest in
                   bond (interest rate) futures and options to a limited ex-
                   tent. See "Implementation of Policies" for a description of
                   these investment practices of the Portfolio.
 
THE BALANCED       The BALANCED PORTFOLIO invests in a diversified portfolio
PORTFOLIO          of both common stocks and bonds. Under normal circumstanc-
INVESTS IN BOTH    es, it is expected that common stocks will represent 60% to
STOCKS AND BONDS   70% of the Portfolio's total assets. The Portfolio's common
                   stocks are held for the purpose of providing reasonable
                   dividend income and long-term growth of capital and income.
 
                   The remaining 30% to 40% of the Portfolio's assets will be
                   invested in high-quality fixed-income securities. These se-
                   curities include investment grade corporate bonds (those
                   rated a minimum of Baa by Moody's or BBB by Standard &
                   Poor's), securities issued by the U.S. Government, its
                   agencies and instrumentalities, including Government Na-
                   tional Mortgage Association ("GNMA") mortgage pass-through
                   certificates, asset-backed securities, as well as U.S. dol-
                   lar denominated debt securities issued by foreign govern-
                   ments, their agencies and instrumentalities, supranational
                   entities and companies located outside the U.S. The Portfo-
                   lio may also hold short-term fixed income securities of the
                   type authorized for the Money Market Portfolio as cash re-
                   serves.
 
                                                                              13
<PAGE>
 
 
                   The amount invested in stocks, bonds and cash reserves may
                   be varied from time to time, depending upon the assessment
                   of business, economic and market conditions by the Portfo-
                   lio's adviser, Wellington Management Company. The Portfolio
                   reserves the right to hold equity, fixed-income and cash
                   securities in whatever proportions deemed desirable at any
                   given time for defensive purposes.
 
                   The Balanced Portfolio may also invest up to 10% of its as-
                   sets in foreign securities, and may invest in stock and
                   bond index futures and options to a limited extent. The
                   Portfolio is also authorized to invest in preferred stocks,
                   although it does not presently intend to do so.
 
THE EQUITY INDEX   The EQUITY INDEX PORTFOLIO expects to invest in all 500
PORTFOLIO          stocks in the Standard & Poor's 500 Composite Stock Price
INVESTS IN S&P     Index ("S&P 500 Index") in approximately the same propor-
500 STOCKS         tions as they are represented in the Index. The 500 stocks
                   in the S&P 500 Index are selected by Standard & Poor's Cor-
                   poration to be included in the Index. The 500 securities,
                   most of which trade on the New York Stock Exchange, repre-
                   sent approximately 75% of the market value of all U.S. com-
                   mon stocks.
 
THE EQUITY         Under normal circumstances, the EQUITY INCOME PORTFOLIO
INCOME PORTFOLIO   will invest at least 80% of its assets in income-producing
INVESTS IN         equity securities, including dividend-paying common stocks
STOCKS             and securities which are convertible into common stocks.
                   The Portfolio intends to invest in securities which gener-
                   ate relatively high levels of dividend income and have the
                   potential for capital appreciation. These generally include
                   common stocks of established, high-quality U.S. corpora-
                   tions. In addition, the Portfolio will seek to diversify
                   its investments over a carefully selected list of securi-
                   ties in order to moderate the risks inherent in equity in-
                   vestments.
 
                   The EQUITY INCOME PORTFOLIO will invest in a company's se-
                   curities following a fundamental analysis of the issuing
                   company. An important part of this analysis will be the ex-
                   amination of the company's ability to maintain its divi-
                   dend. Over time, dividend income has proven to be an impor-
                   tant component of total return. For example, during the
                   ten-year period ended September 1995, reinvested dividend
                   income accounted for approximately 23% of the total return
                   of the S&P 500 Index. Also, dividend income tends to be a
                   more stable source of total return than capital apprecia-
                   tion. While the price of a company's common stock can be
                   significantly affected by market fluctuations and other
                   short-term factors, its dividend level usually has greater
                   stability. For this reason, securities which pay a high
                   level of dividend income are generally less volatile in
                   price than securities which pay a low level of dividend in-
                   come.
 
                   Although the Portfolio intends to invest primarily in eq-
                   uity securities, it may invest up to 20% of its assets in
                   certain cash investments and investment grade fixed-income
                   securities (those rated BBB or better by Standard & Poor's
                   Corporation or Baa or better by Moody's Investors Service).
                   See "Implementation of Policies" for a description of these
                   and other investment practices of the Fund.
 
14
<PAGE>
 
 
THE GROWTH         The GROWTH PORTFOLIO invests primarily in equity securities
PORTFOLIO          of seasoned U.S. companies with above-average prospects for
INVESTS IN         growth. In selecting securities for the Portfolio, Lincoln
STOCKS             Capital Management, adviser to the Portfolio, emphasizes
                   common stocks of high quality, established growth compa-
                   nies. Such companies tend to have exceptional growth rec-
                   ords, strong market positions, reasonable financial
                   strength, and relatively low sensitivity to changing eco-
                   nomic conditions. The adviser seeks to identify common
                   stocks that sell at attractive valuations and companies
                   that have the best prospects for continued above-average
                   growth.
 
                   Besides investing in equity securities, the Portfolio may
                   utilize stock index futures contracts and options to a lim-
                   ited extent. In addition, although the Portfolio will nor-
                   mally remain fully invested in equity securities, the Port-
                   folio may temporarily invest in certain short-term fixed
                   income securities. See "Implementation of Policies" for a
                   description of these and other investment practices of the
                   Portfolio.
 
THE SMALL          The SMALL COMPANY GROWTH PORTFOLIO will invest primarily in
COMPANY GROWTH     the equity securities of small companies which are deemed
PORTFOLIO          to offer favorable prospects for growth in market value.
INVESTS IN SMALL   These securities are primarily common stocks but may also
COMPANY STOCKS     include securities convertible into common stocks.
 
                   Securities purchased by the portfolio may be issued by
                   small or unseasoned companies with speculative risk charac-
                   teristics. Dividend income paid by such securities, if any,
                   will ordinarily be negligible. These securities will gener-
                   ally be traded in established over-the-counter markets,
                   rather than on a national securities exchange.
 
                   The median market capitalization of the companies included
                   in the Portfolio--that is, the median market value of the
                   companies' outstanding shares--is expected to range from
                   $100 million to $500 million. By comparison, for companies
                   included in the Russell 2000 Small Company Index, a bench-
                   mark of the market for small company stocks, the median
                   market capitalization is approximately $360 million. The
                   median capitalization of companies in the Standard & Poor's
                   500 Composite Stock Price Index, a widely used measure of
                   the broad stock market, is approximately $13.3 billion.
 
                   In addition to investing in the equity securities of small
                   companies, the Portfolio may purchase stock futures con-
                   tracts and options to a limited extent, and may invest in
                   certain short-term fixed income securities. The Portfolio
                   is also authorized to invest, to a limited extent, in for-
                   eign and restricted securities, although it does not pres-
                   ently intend to do so. See "Implementation of Policies" for
                   a description of these and other investment practices of
                   the Portfolio.
 
THE                The INTERNATIONAL PORTFOLIO invests primarily in apprecia-
INTERNATIONAL      tion-oriented equity securities of seasoned companies lo-
PORTFOLIO          cated outside the United States. The Portfolio seeks to di-
INVESTS IN         versify its assets among many foreign stock markets: in-
FOREIGN STOCKS     cluding Japan, the United Kingdom, Germany, France, Swit-
                   zerland, the Netherlands, Sweden, Australia, Hong Kong and
                   Singapore. Schroder Capital Management International, ad-
                   viser to the Portfolio, believes that both the selection of
                   individual stocks and the allocation of the Portfolio's as-
                   sets across foreign stock markets are important in managing
                   an international equity portfolio. Within
 
                                                                              15
<PAGE>
 
                   each country, the adviser seeks to invest in securities of
                   companies with consistent above-average earnings prospects
                   whose value is not yet recognized by the stock market.
 
                   Besides investing in equity securities, the International
                   Portfolio may also enter into forward foreign currency ex-
                   change contracts in order to protect against fluctuations
                   in exchange rates. See "Implementation of Policies" for a
                   description of such contracts.
 
TWO PORTFOLIOS     The HIGH-GRADE BOND and EQUITY INDEX PORTFOLIOS are not
USE A "PASSIVE"    managed according to traditional methods of "active" in-
INVESTMENT         vestment management, which involve the buying and selling
APPROACH           of securities based upon economic, financial and market
                   analyses and investment judgment. Instead, these Portfo-
                   lios, utilizing a "passive" or "indexing" investment ap-
                   proach, attempt to provide investment results that parallel
                   their respective indexes through statistical procedures.
                   These statistical techniques are expected to enable the
                   Portfolios to track their benchmark indexes, while minimiz-
                   ing brokerage, custodial and accounting costs.
 
                   The High-Grade Bond and Equity Index Portfolios may invest
                   in the same money market instruments authorized for the
                   Money Market Portfolio, although cash or cash equivalents
                   are normally expected to represent less than 1% of each
                   Portfolio's assets. These two Portfolios may also invest up
                   to 20% of their assets in futures contracts and options in
                   order to invest uncommitted cash balances, to maintain li-
                   quidity to meet shareholder redemptions, or to minimize
                   trading costs.
 
                   However, in keeping with their "passive" investment strate-
                   gy, the two Portfolios will not invest in cash reserves,
                   futures contracts, or options transactions as part of a
                   temporary defensive strategy -- e.g., increasing a Portfo-
                   lio's cash position--in order to protect against stock or
                   bond market declines. The Portfolios intend to remain fully
                   invested, to the extent practicable, in a pool of securi-
                   ties with investment characteristics similar to those of
                   their respective indexes.
 
                   See "Implementation of Policies" for a further description
                   of these and other investment practices of the Fund.
 
                   The Fund is responsible for voting the shares of all secu-
                   rities it holds.
 
                   The investment policies of the Fund are not fundamental and
                   so may be changed by the Board of Trustees without share-
                   holder approval. However, shareholders would be notified
                   prior to a material change.
- --------------------------------------------------------------------------------
INVESTMENT RISKS   The nine Portfolios differ substantially in terms of in-
                   vestment risks.
 
CREDIT RISK FOR    The MONEY MARKET PORTFOLIO is subject primarily to credit
THE MONEY MARKET   risk, the possibility that an issuer of securities will be
PORTFOLIO SHOULD   unable to make timely payments of interest and principal to
BE VERY LOW        the Portfolio. Because the Portfolio invests in obligations
                   of private financial and non-financial corporations, credit
                   risk is higher than for a money market fund investing in
                   securities of the U.S. Government. However, relative to the
                   fixed-income market generally, the quality of the bank and
                   corporate obligations held by the Money Market Portfolio is
                   high, and so credit risk should be very low. Although the
                   Portfolio invests in high quality
 
16
<PAGE>
 
                   instruments, money market portfolios, unlike federally-in-
                   sured bank deposits, are not insured or guaranteed.
 
THE HIGH-GRADE     As mutual funds investing in bonds, the High-Grade Bond and
BOND AND HIGH      High Yield Bond Portfolios are exposed to interest rate    
YIELD BOND         risk.                                                      
PORTFOLIOS ARE                                                                
SUBJECT TO         INTEREST RATE RISK is the potential for a decline in the  
INTEREST RATE      value of fixed-income securities due to rising interest   
RISK               rates. In general, bond prices vary inversely with interest
                   rates. If interest rates rise, bond prices generally de-  
                   cline; if interest rates fall, bond prices generally rise. 
                   In addition, for a given change in interest rates, longer- 
                   maturity bonds fluctuate more in price (gaining or losing  
                   more in value) than shorter-maturity bonds.                
 
                   The Lehman Bond Index and the High-Grade Bond Portfolio are
                   expected to maintain an intermediate-term average weighted
                   maturity, and may therefore be subject to a moderate to
                   high level of interest rate risk. The following chart il-
                   lustrates the potentially high level of interest rate risk
                   of the Lehman Bond Index and the Portfolio by summarizing
                   the effect of rising and falling interest rates on a single
                   7-year bond yielding 7%:
 
<TABLE>
<CAPTION>
                                       CHANGE IN
                                    PRINCIPAL VALUE
                                     OF 7-YEAR BOND
                 PERCENTAGE POINT   ----------------
                    CHANGE IN       RISING  FALLING
                  INTEREST RATES     RATES   RATES
                 ----------------   ------- --------
                 <S>                <C>     <C>
                 1% Change          - 4.9%  + 5.2%
                 2% Change          - 9.5   +10.7
                 3% Change          -13.8   +16.7
</TABLE>
 
                   This chart is intended to provide you with general guide-
                   lines for determining the degree of interest rate risk to
                   which the Portfolio may be exposed.
 
THE HIGH-GRADE     As a mutual fund investing in U.S. Government and corporate
BOND PORTFOLIO IS  bonds and mortgage-backed securities, the HIGH-GRADE BOND
ALSO SUBJECT TO    PORTFOLIO is also exposed to prepayment and credit risks.
PREPAYMENT AND
CREDIT RISKS       Because of its holdings of mortgage-backed securities, the
                   High-Grade Bond Portfolio will also be subject to MORTGAGE
                   PREPAYMENT RISK to a limited extent. Prepayment risk is the
                   possibility that, during periods of declining interest     
                   rates, the principal invested in high-yielding mortgage-   
                   backed securities will be repaid earlier than scheduled. As
                   a result, the Portfolio will be forced to reinvest the un- 
                   anticipated payments at generally lower rates.             
 
                   Prepayment risk has three important effects. First, when
                   mortgage prepayments are reinvested at lower rates, the in-
                   come from the Portfolio's mortgage-backed securities will
                   decline. Second, when interest rates fall and prepayments
                   increase, mortgage-backed securities will not enjoy as
                   large a gain in market value as ordinary bonds do. Third,
                   when interest rates rise and mortgage prepayments decrease,
                   mortgage-backed securities may decline in market value more
                   than ordinary bonds. To compensate for these risks, mort-
                   gage-backed securities generally offer higher yields than
                   bonds of comparable quality and maturity.
 
                   CREDIT RISK for the High-Grade Bond Portfolio is expected
                   to be low, in part reflecting the high quality of the secu-
                   rities included in the Lehman Bond
 
                                                                              17
<PAGE>
 
                   Index. A large proportion of securities in the Index are
                   AAA-rated U.S. Government bonds or Government-guaranteed
                   mortgage-backed securities. It is anticipated that the av-
                   erage credit quality of the Portfolio will be equivalent to
                   a rating of at least AAA from Standard & Poor's or Aaa from
                   Moody's.
 
                   However, to a limited extent, the High-Grade Bond Portfolio
                   will be exposed to EVENT RISK -- i.e., the possibility that
                   corporate or foreign dollar-denominated fixed-income secu-
                   rities held by the Portfolio may decline substantially in
                   credit quality and market value due to a corporate merger,
                   leveraged buyout, takeover or other event. While event risk
                   may be high for certain securities held by the Portfolio,
                   event risk for the Portfolio in the aggregate should be low
                   because of the Portfolio's diversified holdings and the
                   small percentage of the Portfolio's assets likely to be in-
                   vested in such obligations.
 
THE HIGH YIELD     In addition to interest rate risks, the High Yield Bond   
BOND PORTFOLIO     Portfolio is subject to INCOME RISK which is the potential 
IS ALSO SUBJECT    for a decline in the Portfolio's income due to falling mar-
TO CREDIT,         ket interest rates.                                        
INCOME AND                                                                    
MANAGER RISK       In addition to interest rate and income risk, the Portfolio
                   is exposed to a substantial degree of CREDIT RISK. Credit  
                   risk, also known as default risk, is the possibility that a 
                   bond issuer will fail to make timely payments of interest   
                   or principal to the Portfolio. The credit risk of the Port- 
                   folio depends on the quality of its investments. Reflecting 
                   their higher risks, lower-quality bonds generally offer     
                   higher yields (all other factors being equal).              
 
                   The medium- and low-grade bonds held by the Portfolio are
                   considered speculative by traditional investment standards.
                   High-yield bonds may be issued as a consequence of corpo-
                   rate restructurings, such as leveraged buyouts, mergers,
                   acquisitions, debt recapitalizations, or similar events.
                   Also, high-yield bonds are often issued by smaller, less
                   creditworthy companies or by highly leveraged (indebted)
                   firms, which are generally less able than more financially
                   stable firms to make scheduled payments of interest and
                   principal. The risks posed by bonds issued under such cir-
                   cumstances are substantial.
 
                   In an effort to minimize credit risk, the High Yield Bond
                   Portfolio will diversify its holdings widely among many is-
                   suers. In the past, the high yields from a portfolio of
                   low-grade bonds have more than compensated for the higher
                   default rates on such securities. However, there can be no
                   assurance that diversification will protect the Portfolio
                   from widespread bond defaults brought about by a sustained
                   economic downturn, or that yields will continue to offset
                   default rates on high-yield bonds in the future. A long-
                   term track record on bond default rates, such as that for
                   investment grade corporate bonds, does not exist for the
                   high-yield market. It may be that future default rates on
                   high-yield bonds will be more widespread and higher than in
                   the past, especially during periods of deteriorating eco-
                   nomic conditions.
 
                   The share price of the High Yield Bond Portfolio will be
                   influenced not only by changing interest rates, but also by
                   the bond market's perception of credit quality and the out-
                   look for economic growth. When economic conditions appear
                   to be deteriorating, low- and medium-rated bonds may de-
                   cline in market value due to investors' heightened concern
                   over credit quality, regardless of prevailing interest
                   rates.
 
18
<PAGE>
 
 
                   Especially at such times, trading in the secondary market
                   for high-yield bonds may become thin and market liquidity
                   may be significantly reduced. Even under normal conditions,
                   the market for high-yield bonds may be less liquid than the
                   market for investment grade corporate bonds. There are
                   fewer securities dealers in the high-yield market, and pur-
                   chasers of high-yield bonds are concentrated among a
                   smaller group of securities dealers and institutional in-
                   vestors.
 
                   In periods of reduced market liquidity, high-yield bond
                   prices may become more volatile, and both the high-yield
                   market and the Portfolio may experience sudden and substan-
                   tial price declines. Also, there may be significant dispar-
                   ities in the prices quoted for high-yield securities by
                   various dealers. Under such conditions, the Portfolio may
                   find it difficult to value its securities accurately. The
                   Portfolio may also be forced to sell securities at a sig-
                   nificant loss in order to meet shareholder redemptions.
 
                   Under unusual circumstances, the Portfolio may hold a sig-
                   nificant portion of its assets in U.S. Government obliga-
                   tions and cash reserves for temporary defensive purposes.
 
                   Besides credit and liquidity concerns, prices for high-
                   yield bonds may be affected by legislative and regulatory
                   developments. For example, from time to time, Congress has
                   considered legislation to restrict or eliminate the corpo-
                   rate tax deduction for interest payments or to regulate
                   corporate restructurings such as takeovers or mergers. Such
                   legislation may significantly depress the prices of out-
                   standing high-yield bonds.
 
                   Overall, investors should expect that the High Yield Bond
                   Portfolio may fluctuate in price independently of the broad
                   bond market and prevailing interest rate trends, and that
                   price volatility at times may be very high, especially as a
                   result of credit concerns, market liquidity, and antici-
                   pated or actual legislative and regulatory changes.
 
                   Finally, the investment adviser manages the Portfolio ac-
                   cording to the traditional methods of "active" investment
                   management, which involve the buying and selling of securi-
                   ties based upon economic, financial and market analysis and
                   investment judgment. MANAGER RISK refers to the possibility
                   that the Portfolio's investment adviser may fail to execute
                   the Portfolio's investment strategy effectively. As a re-
                   sult, the Portfolio may fail to achieve its stated objec-
                   tive.
 
THE BALANCED       As a mutual fund investing in both stocks and bonds, the  
PORTFOLIO IS       BALANCED PORTFOLIO is subject to both stock market and in- 
EXPOSED TO THE     terest rate (bond) risk. Fluctuating stock prices are ex-  
RISKS OF STOCKS    pected to have a significant effect on the Portfolio's     
AND BONDS AND      share price, as the Portfolio invests 60% to 70% of its as-
MANAGER RISK       sets in common stocks. Bond price fluctuations will have a 
                   correspondingly smaller influence. In the past, the stock  
                   and bond markets have, from time to time, fluctuated inde- 
                   pendently of one another. As a result, with its mix of     
                   stocks and bonds, the Balanced Portfolio is likely to en-  
                   tail less investment risk--and a potentially lower return--
                   than a portfolio investing exclusively in common stocks.   
                                                                              
 
                                                                              19
<PAGE>
 
 
                   To a limited extent, the Balanced Portfolio is also subject
                   to CREDIT RISK--i.e., the likelihood that a bond issuer
                   will fail to make timely payments of interest and principal
                   to the Balanced Portfolio. Such credit risk is expected to
                   be low, however, due to the credit quality and diversifica-
                   tion of the Balanced Portfolio's bond investments.
 
                   The investment adviser of the Balanced Portfolio manages
                   the Portfolio according to the traditional methods of "ac-
                   tive" investment management, which involve the buying and
                   selling of securities based upon economic, financial and
                   market analysis and investment judgement. MANAGER RISK re-
                   fers to the possibility that the Portfolio's investment ad-
                   viser may fail to execute the Portfolio's investment strat-
                   egy effectively. As a result, the Portfolio may fail to
                   achieve its stated objective.
 
THE EQUITY         The EQUITY INCOME, EQUITY INDEX, SMALL COMPANY GROWTH AND
INCOME, EQUITY     GROWTH PORTFOLIOs are subject to stock MARKET RISK--i.e.,
INDEX, GROWTH      the possibility that common stock prices will decline over
AND SMALL          short or even extended periods. The U.S. stock market tends
COMPANY GROWTH     to be cyclical, with periods when stock prices generally
PORTFOLIOS ARE     rise and periods when stock prices generally decline.
SUBJECT TO STOCK
MARKET RISK        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     
                   1995, as measured by the S&P 500 Index:                    
 
                    AVERAGE ANNUAL U.S. STOCK MARKET RETURNS (1926-1995) OVER
                                      VARIOUS TIME HORIZONS
 
<TABLE>
<CAPTION>
                            1 YEAR 5 YEARS 10 YEARS 20 YEARS
                            ------ ------- -------- --------
                   <S>      <C>    <C>     <C>      <C>     
                   Best     +53.9% +23.9%   +20.1%   +16.9% 
                   Worst    -43.3  -12.5    - 0.9    + 3.1  
                   Average  +12.5  +10.3    +10.7    +10.7   
</TABLE>
 
                   As shown, common stocks have provided annual total returns
                   (capital appreciation plus dividend income) averaging
                   +10.7% for all 10-year periods from 1926 to 1995. Average
                   annual returns may not be useful for forecasting future re-
                   turns in any particular period, as stock market returns are
                   quite volatile from year to year.
 
THE SMALL          Small company stocks, which are the Small Company Growth
COMPANY GROWTH     Portfolio's primary investments, have historically been
PORTFOLIO STOCKS   more volatile in price than the stock market as a whole.
MAY BE MORE        Among the likely reasons for the greater price volatility
VOLATILE THAN      of small company stocks are the less certain growth pros-
LARGE COMPANY      pects of smaller firms, a low degree of liquidity in the
STOCKS             markets for small company stocks, and the small to negligi-
                   ble dividends generally paid by small companies. Besides
                   exhibiting greater volatility, small company stocks have at
                   times fluctuated in value independently of the broad stock
                   market.
 
                   Investors should therefore expect that small company stocks
                   (and hence the Portfolio's investments) may be more vola-
                   tile than the stocks of more established companies. In ad-
                   dition, investors should recognize that small company
                   stocks may rise or fall in value independently of the broad
                   stock market.
 
20
<PAGE>
 
 
THE EQUITY         The investment advisers manage the Equity Income, Growth
INCOME, GROWTH     and Small Company Growth Portfolios according to the tradi-
AND SMALL          tional methods of "active" investment management, which in-
COMPANY GROWTH     volve the buying and selling of securities based upon eco-
PORTFOLIOS ARE     nomic, financial and market analysis and investment judg-
SUBJECT TO         ment. MANAGER RISK refers to the possibility that the
MANAGER RISK       Fund's investment advisers may fail to execute the Portfo-
                   lio's investment strategy effectively. As a result, each
                   Portfolio may fail to achieve its stated objective.
 
THE                As a mutual fund investing in equity securities, the Port-
INTERNATIONAL      folio is subject to MARKET RISK--i.e., the possibility that
PORTFOLIO IS       stock prices in general will decline over short or even ex-
SUBJECT TO STOCK   tended periods. Stock markets tend to be cyclical, with pe-
MARKET RISK        riods when stock prices generally rise and periods when
                   stock prices generally decline.
 
THE                Investments in foreign stock markets can be as volatile, if
INTERNATIONAL      not more volatile, than investments in U.S. markets. To il-
PORTFOLIO STOCKS   lustrate the volatility of foreign stock market returns for
MAY BE MORE        the U.S. dollar-based investor, the following table sets
VOLATILE THAN      forth the extremes for foreign stock market returns as well
U.S. STOCKS        as the average return for the period from 1969 to 1995, as
                   measured by the Morgan Stanley Capital International Eu-
                   rope, Australia, Far East (EAFE) Index:
 
                     AVERAGE ANNUAL INTERNATIONAL STOCK MARKET RETURNS (1969-
                                 1995) OVER VARIOUS TIME HORIZONS
 
<TABLE>
<CAPTION>
                            1 YEAR 5 YEARS 10 YEARS 20 YEARS 
                            ------ ------- -------- -------- 
                   <S>      <C>    <C>     <C>      <C>      
                   Best     +69.9% +36.5%   +22.8%   +16.3%  
                   Worst    -23.2%  +1.5%    +7.0%   +12.0%  
                   Average  +15.3% +14.2%   +16.2%   +14.9%   
</TABLE>
 
                   As shown, international (non-U.S.) stocks have provided an-
                   nual total returns averaging +16.2% for all 10-year periods
                   from 1969 to 1995. Note, however, that the period from 1969
                   to 1995 was a favorable one for foreign stock market in-
                   vesting. As a result, the figures on total return and stock
                   market volatility are provided here only as a guide to po-
                   tential market risk, and may not be useful for forecasting
                   future returns in any particular period.
 
                   The table on international stock market returns should not
                   be viewed as a representation of future returns from inter-
                   national stock markets or the International Portfolio. The
                   illustrated returns represent the historical performance of
                   unmanaged portfolios of securities (before subtracting
                   portfolio transaction costs and other expenses of an in-
                   vestment portfolio), which may be a poor guide to future
                   returns. In addition, the International Portfolio is likely
                   to differ in terms of portfolio composition from the EAFE
                   Index, and so the performance of the International Portfo-
                   lio should not be expected to mirror the return provided by
                   the index.
 
INTERNATIONAL      For U.S. investors, the returns of foreign investments,
STOCKS ALSO        such as those held by the International Portfolio, are in-
EXPOSE INVESTORS   fluenced by not only the returns on foreign common stocks
TO CURRENCY AND    themselves, but also by CURRENCY RISK--i.e., changes in the
OTHER RISKS        value of the currencies in which the stocks are denominat-
                   ed. In a period when the U.S. dollar generally rises
                   against foreign currencies, the returns on foreign stocks
                   for a U.S. investor may be diminished. By contrast, in a
                   period when the U.S. dollar generally declines, the returns
                   on foreign stocks may be enhanced.
 
                                                                              21
<PAGE>
 
 
                   Other risks and considerations of international investing
                   include the following: differences in accounting, auditing
                   and financial reporting standards; generally higher commis-
                   sion rates on foreign portfolio transactions; the smaller
                   trading volumes and generally lower liquidity of foreign
                   stock markets, which may result in greater price volatili-
                   ty; foreign withholding taxes payable on the Portfolio's
                   foreign securities, which may reduce dividend income pay-
                   able to shareholders; the possibility of expropriation or
                   confiscatory taxation; adverse changes in investment or ex-
                   change control regulations; difficulty in obtaining a judg-
                   ment from a foreign court; political instability which
                   would affect U.S. investment in foreign countries; and po-
                   tential restrictions on the flow of international capital.
 
THE                The investment adviser manages the Portfolio according to
INTERNATIONAL      the traditional methods of "active" investment management,
PORTFOLIO IS       which involve the buying and selling of securities based
SUBJECT TO         upon economic, financial and market analysis and investment
MANAGER RISK       judgment. MANAGER RISK refers to the possibility that the
                   Fund's investment advisers may fail to execute the Portfo-
                   lio's investment strategy effectively. As a result, the
                   Portfolio may fail to achieve its stated objective.
- --------------------------------------------------------------------------------
WHO SHOULD         The Portfolios of the Fund are intended exclusively as in-
INVEST             vestment vehicles for variable annuity and variable life
                   insurance contracts offered by the separate accounts of
INVESTORS          various insurance companies. Such contracts may provide
SEEKING A          certain tax benefits, as outlined in the accompanying pro-
DIVERSIFIED        spectus for the insurance company's variable life insurance
INVESTMENT         or variable annuity policy.
PROGRAM FOR
VARIABLE           The Money Market Portfolio is appropriate for investors who 
INSURANCE OR       desire maximum principal stability with current income. The 
ANNUITY            High-Grade Bond Portfolio is designed for investors who are 
CONTRACTS          seeking a higher level of income than generally provided by 
                   the Money Market Portfolio, and who are willing to accept   
                   short-term price fluctuations in the value of their invest- 
                   ment. The Balanced Portfolio is designed for investors who  
                   are seeking the potential capital appreciation provided by  
                   common stocks, but who also wish to counterbalance the in-  
                   herent risks of common stocks with an investment in fixed-  
                   income securities. The Equity Income Portfolio is designed   
                   for investors who are seeking a high level of current in-    
                   come and the potential for long-term capital appreciation    
                   with lower investment risk and volatility than is normally   
                   available from common stock portfolios. The High Yield Bond  
                   Portfolio is designed for aggressive investors seeking a     
                   high level of income and who are willing to take substan-    
                   tial risks in pursuit of potentially higher rewards. The     
                   Equity Index, Growth, Small Company Growth and Interna-      
                   tional Portfolios are intended for investors who are seek-   
                   ing the potentially higher returns of common stocks and who  
                   can tolerate sudden, often substantial, fluctuations in the  
                   value of their investment. The International Portfolio in-   
                   vestor should be cognizant of the unique risks of interna-   
                   tional investing, including their exposure to currency       
                   fluctuations. In general, there can be no assurance that a   
                   Portfolio will achieve its stated objective.                 
                                                                                
                   The Fund's Portfolios are intended to be long-term invest-
                   ment vehicles and are not designed to provide investors
                   with a means of speculating on short-term market movements.
                   Investors who engage in excessive account activity
 
22
<PAGE>
 
                   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 ex-
                   change 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. Addition-
                   ally, the Fund has adopted exchange privilege limitations
                   in order to prevent excessive use of the exchange privilege
                   afforded shareholders. Exchange activity generally will not
                   be deemed excessive if limited to TWO SUBSTANTIVE EXCHANGE
                   REDEMPTIONS (AT LEAST 30 DAYS APART) from a Portfolio dur-
                   ing any calendar year. These limitations do not apply to
                   exchanges from the Fund's Money Market Portfolio. Finally,
                   the Fund reserves the right to suspend the offering of its
                   shares. For a further explanation see the "EXCHANGE AMONG
                   THE PORTFOLIOS" section in the insurance prospectus.
 
                   An investment in a single Portfolio of the Fund should not
                   be considered a complete investment program. Most investors
                   should maintain diversified holdings with different risk
                   characteristics--including common stocks, bonds, and money
                   market instruments.
- --------------------------------------------------------------------------------
IMPLEMENTATION     Each Portfolio follows a number of additional investment
OF POLICIES        practices in pursuit of its investment objective.
 
 
EACH PORTFOLIO     The nine Portfolios of the Fund may invest in repurchase
MAY INVEST IN      agreements according to the restrictions and limitations
REPURCHASE         set forth previously in "Investment Policies." A repurchase
AGREEMENTS         agreement is a means of investing monies for a short peri-
                   od. In a repurchase agreement, a seller--a U.S. commercial
                   bank or recognized U.S. securities dealer--sells securities
                   to a Portfolio and agrees to repurchase the securities at
                   the Portfolio's cost plus interest within a specified pe-
                   riod (normally one day). In these transactions, the securi-
                   ties purchased by the Portfolio will have a total value
                   equal to, or in excess of, the value of the repurchase
                   agreement and will be held by the Fund's custodian bank un-
                   til repurchased.
 
                   The use of repurchase agreements involves certain risks.
                   For example, if the seller of the agreement defaults on its
                   obligation to repurchase the underlying securities at a
                   time when the value of these securities has declined, the
                   Portfolio may incur a loss upon disposition of them. If the
                   seller of the agreement becomes insolvent and subject to
                   liquidation or reorganization under the bankruptcy code or
                   other laws, a bankruptcy court may determine that the un-
                   derlying securities are collateral not within the control
                   of the Portfolio and therefore subject to sale by the
                   trustee in bankruptcy. Finally, it is possible that the
                   Portfolio may not be able to substantiate its interest in
                   the underlying securities. While the Fund's management ac-
                   knowledges these risks, it is expected that they can be
                   controlled through stringent security selection and careful
                   monitoring.
 
THE MONEY MARKET   Eurodollar bank obligations are dollar-denominated certifi-
PORTFOLIO MAY      cates of deposit or time deposits issued outside the U.S.
INVEST IN          capital markets by the foreign branches of U.S. banks and
EURODOLLAR OR      by foreign banks; Yankee bank obligations are dollar-
YANKEE             denominated obligations issued in the U.S. capital markets
OBLIGATIONS        by foreign banks.
 
                                                                              23
<PAGE>
 
 
                   Eurodollar and Yankee obligations are subject to the same
                   risks that pertain to domestic issues, notably credit risk,
                   market risk, and liquidity risk. Additionally, Eurodollar
                   (and, to a limited extent, Yankee) obligations are subject
                   to certain sovereign risks. One such risk is the possibil-
                   ity that a foreign government might prevent dollar-denomi-
                   nated funds from flowing across its borders. Other risks
                   include: adverse political and economic developments in a
                   foreign country; the extent and quality of government regu-
                   lation of financial markets and institutions; the imposi-
                   tion of foreign withholding taxes; and expropriation or na-
                   tionalization of foreign issuers. However, Eurodollar and
                   Yankee obligations will undergo the same credit analysis as
                   domestic issues in which the Money Market Portfolio in-
                   vests, and foreign issuers will be required to meet the
                   same tests of financial strength as the domestic issuers
                   approved for the Money Market Portfolio.
 
THE HIGH-GRADE     The High-Grade Bond Portfolio will invest 80% or more of
BOND PORTFOLIO     its assets in securities included in the Lehman Bond Index.
INVESTS IN BONDS   The Lehman Bond Index measures the total investment return
AND MORTGAGE       (capital change plus income) provided by a universe of
SECURITIES         fixed-income securities, weighted by the market value out-
                   standing of each security. As of September 30, 1995, over
                   5,300 issues (including bonds, notes, debentures and mort-
                   gage issues) were included in the Lehman Bond Index, repre-
                   senting more than $4.0 trillion in market value. The secu-
                   rities included in the Lehman Bond Index generally meet the
                   following criteria, as defined by Lehman Brothers: an ef-
                   fective maturity of not less than one year; an outstanding
                   market value of at least $100 million; and investment-grade
                   quality (i.e., rated a minimum of Baa- by Moody's).
 
THE HIGH-GRADE     The High-Grade Bond Portfolio will not invest in all of the
BOND PORTFOLIO     individual issues that comprise the Lehman Bond Index be-
USES A "SAMPLING"  cause of the large number of securities (approximately
TECHNIQUE          6,000) involved. Instead, the Portfolio will hold a repre-
                   sentative sample of the securities in the Index. Securities
                   will be chosen for the Portfolio so that the Portfolio's
                   fundamental characteristics are similar to those of the
                   Lehman Bond Index.
 
                   Over time, as the Portfolio's assets increase, the Portfo-
                   lio will seek to hold securities which reflect the interest
                   rate risk weighting of the four major classes in the In-
                   dex -- U.S. Treasury and agency securities, corporate and
                   foreign dollar-denominated debt, and mortgage-backed secu-
                   rities. For example, if U.S. Treasury and agency securities
                   represent 60% of the Index risk, then approximately 60% of
                   the Portfolio's risk will also be invested in such securi-
                   ties. As the Portfolio grows, these classes will be further
                   delineated along the lines of sector, term to maturity,
                   coupon, and credit rating. For example, within the corpo-
                   rate debt class, all long-term, low coupon AA-rated utility
                   bonds might be represented in the Portfolio by one or two
                   individual utility securities.
 
THE HIGH-GRADE     As part of its effort to duplicate the investment perfor-
BOND PORTFOLIO     mance of the Lehman Bond Index, the High-Grade Bond Portfo-
MAY INVEST IN      lio will invest in mortgage-backed securities. Mortgage-
MORTGAGE-BACKED    backed securities represent an interest in an underlying
SECURITIES         pool of mortgages. Unlike ordinary fixed-income securities,
                   which generally pay a fixed rate of interest and return
                   principal upon maturity, mortgage-backed securities repay
                   both interest income and principal as part of their
 
24
<PAGE>
 
                   periodic payments. Because the mortgages underlying mort-
                   gage-backed certificates can be prepaid at any time by
                   homeowners or corporate borrowers, mortgage-backed securi-
                   ties give rise to certain unique "prepayment" risks. See
                   "Investment Risks."
 
                   The High-Grade Bond Portfolio may purchase mortgage-backed
                   securities issued by the Government National Mortgage Asso-
                   ciation (GNMA), the Federal Home Loan Mortgage Corporation
                   (FHLMC), the Federal National Mortgage Association (FNMA),
                   and the Federal Housing Authority (FHA). GNMA securities
                   are guaranteed by the U.S. Government as to the timely pay-
                   ment of principal and interest; securities from other gov-
                   ernment-sponsored entities are generally not secured by an
                   explicit pledge of the U.S. Government. The Portfolio may
                   also invest in conventional mortgage securities, which are
                   packaged by private corporations and are not guaranteed by
                   the U.S. Government, to the extent that these securities
                   are represented in the index.
 
                   Mortgage securities that are guaranteed by the U.S. Govern-
                   ment are guaranteed only as to the timely payment of prin-
                   cipal and interest. The market value of such securities is
                   not guaranteed and may fluctuate. See "Investment Risks."
 
THE HIGH YIELD     The High Yield Bond Portfolio may own restricted securities
BOND PORTFOLIO     to a limited extent. Restricted securities are securities
MAY OWN            which are not freely marketable or which are subject to re-
RESTRICTED         strictions upon sale under the Securities Act of 1933. The
SECURITIES         Portfolio may invest up to 15% of its net assets in re-
                   stricted securities. (Included within this 15% limit are
                   restricted securities and other securities for which price
                   quotations are not readily available.)
 
THE HIGH YIELD     The High Yield Bond Portfolio may hold securities of for-
BOND PORTFOLIO     eign issuers, but all such securities must be denominated
MAY INVEST IN      in U.S. dollars. Securities of foreign issuers may trade in
SECURITIES OF      U.S. or foreign securities markets. Securities of foreign
FOREIGN ISSUERS    issuers may involve investment risks that are different
                   from those of domestic issuers. Such risks include the ef-
                   fect of foreign economic policies and conditions, future
                   political and economic developments, and the possible impo-
                   sition of exchange controls or other foreign governmental
                   restrictions on foreign debt issuers. There may also be
                   less publicly available information about a foreign issuer
                   than a domestic issuer of securities. Foreign issuers are
                   generally not subject to the uniform accounting, auditing
                   and financial reporting standards that apply to domestic
                   issuers. Also, foreign debt markets may be characterized by
                   lower liquidity, greater price volatility and higher trans-
                   action costs. Additionally, it may be difficult to obtain
                   or enforce a legal judgment in a foreign court.
 
THE EQUITY INDEX   The Equity Index Portfolio attempts to duplicate the in-
PORTFOLIO          vestment results of the S&P 500 Index by holding all 500
INVESTS IN ALL     stocks in approximately the same proportions as they are
500 S&P STOCKS     represented in the S&P 500 Index. This indexing technique
                   is known as "complete replication."
 
                   Each stock in the S&P 500 Index is weighted by its market
                   value. Because of the market-value weighting, the 50 larg-
                   est companies in the S&P 500 Index currently account for
                   approximately 47% of the Index. Typically, companies in-
                   cluded in the S&P 500 Index are the largest and most domi-
                   nant firms in their respective industries. As of September
                   30, 1995, the five largest companies in
 
                                                                              25
<PAGE>
 
                   the Index were: General Electric (2.51%), AT&T (2.42%),
                   Exxon (2.08%), Coca Cola Co. (2.02%) and Philip Morris
                   (1.63%). The largest industry categories were telephone
                   companies (8.6%), banks (6.3%), pharmaceutical companies
                   (5.8%), international oil companies (5.6%), and medical
                   supply & services (4.0%).
 
                   The Equity Index Portfolio is not sponsored, endorsed,
                   sold, or promoted by Standard & Poor's. Standard & Poor's
                   makes no representation or warranty, implied or express, to
                   the purchasers of the Portfolio or any member of the public
                   regarding the advisability of investing in index funds or
                   the ability of the S&P 500 Index to track general stock
                   market performance. Standard & Poor's does not guarantee
                   the accuracy and/or the completeness of the S&P 500 Index
                   or any data included therein.
 
                   Standard & Poor's makes no warranty, express or implied, as
                   to the results to be obtained by the Portfolio, owners of
                   the Portfolio, any person or any entity from the use of the
                   S&P 500 Index or any data included therein. Standard &
                   Poor's makes no express or implied warranties and hereby
                   expressly disclaims all such warranties of merchantability
                   or fitness for a particular purpose for use with respect to
                   the S&P 500 Index or any data included therein. Standard &
                   Poor's only relationship to the Portfolio is the licensing
                   of the Standard & Poor's marks and the S&P 500 Index, which
                   is determined, composed and calculated by Standard & Poor's
                   without regard to the Equity Index Portfolio.
 
THE SMALL          The Small Company Growth Portfolio is authorized to invest
COMPANY GROWTH     up to 10% of its assets in foreign securities and up to 15%
PORTFOLIO MAY      of its assets in restricted or illiquid securities. Howev-
INVEST IN          er, the Portfolio currently has no intentions to own either
FOREIGN AND        foreign or restricted securities.
RESTRICTED    
STOCKS        

THE SMALL          Although it normally seeks to remain substantially invested
COMPANY GROWTH     in equity securities, the Small Company Growth Portfolio
PORTFOLIO MAY      may invest for temporary purposes in certain short-term
INVEST IN          fixed income securities. Such securities may be used to in-
SHORT-TERM FIXED   vest uncommitted cash balances, to maintain liquidity to
INCOME             meet shareholder redemptions, or to take a temporary defen-
SECURITIES         sive position against potential stock market declines.
                   These securities include: obligations to the United States
                   Government and its agencies or instrumentalities; commer-
                   cial paper; bank certificates of deposit and bankers' ac-
                   ceptances; and repurchase agreements collateralized by
                   these securities.
 
THE                In addition to foreign equity securities, the International
INTERNATIONAL      Portfolio may enter into forward foreign currency exchange
PORTFOLIO MAY      contracts. Such contracts are used to protect the Portfo-
ENTER INTO         lio's securities against uncertainty in the level of future
FORWARD CURRENCY   foreign exchange rates. The Portfolio may not enter into
CONTRACTS          such contracts for speculative purposes.
 
                   A forward foreign currency exchange contract is an obliga-
                   tion to purchase or sell a specific currency at a future
                   date, which may be any fixed number of days from the date
                   of the contract agreed upon by the parties, at a price set
                   at the time of the contract. These contracts may be bought
                   or sold to protect the Portfolio to a limited extent
                   against adverse changes in exchange rates between foreign
                   currencies and the U.S. dollar. Such contracts, which pro-
                   tect the value of a Portfolio's investment securities
                   against a decline in the value of a currency, do not elimi-
                   nate fluctuations in the underlying prices of the
 
26
<PAGE>
 
                   securities. They simply establish an exchange rate at a fu-
                   ture date. Also, although such contracts tend to minimize
                   the risk of loss due to a decline in the value of the
                   hedged currency, at the same time they tend to limit any
                   potential gain that might be realized should the value of
                   such currency increase.
 
EIGHT PORTFOLIOS   All Portfolios except the Money Market Portfolio may lend
MAY LEND THEIR     their investment securities to qualified institutional in-
SECURITIES         vestors for the purpose of realizing additional income.
                   Loans of securities by a Portfolio will be collateralized
                   by cash, letters of credit, or securities issued or guaran-
                   teed by the U.S. Government or its agencies. The collateral
                   will equal at least 100% of the current market value of the
                   loaned securities. In keeping with statutory restrictions,
                   securities lending will not exceed 33 1/3% of a Portfolio's
                   assets.
 
TWO PORTFOLIOS     Each Portfolio of the Fund retains the right to sell secu-
ARE EXPECTED TO    rities irrespective of how long they have been held. Be-
HAVE LOW           cause of their "passive" investment management approach,
TURNOVER RATES     however, portfolio turnover for the High-Grade Bond and Eq-
                   uity Index Portfolios is expected to be under 50%, a gener-
                   ally lower turnover rate than for most investment compa-
                   nies. A portfolio turnover rate of 50% would occur if one
                   half of a Portfolio's securities matured or were sold
                   within one year. Ordinarily, securities will be sold from
                   the two "passive" Portfolios only to reflect structural
                   changes in their respective indexes (including mergers or
                   changes in the composition of an index) or to accommodate
                   cash flows out of a Portfolio while maintaining the simi-
                   larity of the Portfolio to its benchmark index.
 
                   Portfolio turnover for the High Yield Bond, Balanced, Eq-
                   uity Income, Growth, Small Company Growth and International
                   Portfolios is not expected to exceed 100%. For the Money
                   Market Portfolio, portfolio turnover should be high due to
                   the short-term maturities of the securities held by the
                   Portfolio.
 
EACH PORTFOLIO     Each Portfolio of the Fund may borrow money from a bank up
MAY BORROW MONEY   to a limit of 15% of the market value of its assets, but
                   only for temporary or emergency purposes. A Portfolio would
                   borrow money only to meet redemption requests prior to the
                   settlement of securities already sold or in the process of
                   being sold by the Portfolio. To the extent that a Portfolio
                   borrows money prior to selling securities, the Portfolio
                   may be leveraged; at such times, the Portfolio may appreci-
                   ate or depreciate in value more rapidly than its benchmark
                   index. A Portfolio will repay any money borrowed in excess
                   of 5% of the market value of its total assets prior to pur-
                   chasing additional portfolio securities.
 
DERIVATIVE         Derivatives are instruments whose values are linked to or
INVESTING          derived from an underlying security or index. The most com-
                   mon and conventional types of derivative securities are
                   futures and options.
 
MONEY MARKET       The Portfolio invests only in derivative securities such as
PORTFOLIO          floating rate instruments with returns derived directly
                   from standard, U.S. dollar-denominated short-term taxable
                   interest rate benchmarks such as short-term LIBOR rates,
                   Federal Reserve Daily Federal Funds Effective Rate and U.S.
                   Treasury Bill auction results. The Portfolio neither uses
                   derivatives to apply leverage, nor does it invest in
                   futures or options.
 
                                                                              27
<PAGE>
 
 
EIGHT PORTFOLIOS   All Portfolios except the Money Market Portfolio may invest
MAY USE FUTURES    in futures contracts and options, but only to a limited ex-
CONTRACTS AND      tent. The Portfolios may enter into futures contracts pro-
OPTIONS            vided that not more than 5% of its assets are required as a
                   futures contract deposit; in addition, the Portfolios may
                   enter into futures contracts and options transactions only
                   to the extent that obligations under such contracts or
                   transactions represent not more than 20% of the Portfolio's
                   assets.
 
                   Futures contracts and options may be used for several com-
                   mon fund management strategies: to maintain cash reserves
                   while simulating full investment, to facilitate trading, to
                   reduce transaction costs, or to seek higher investment re-
                   turns when a specific futures contract is priced more at-
                   tractively than other futures contracts or the underlying
                   security or index.
 
                   The Portfolios may use futures contracts for bona fide
                   "hedging" purposes. In executing a hedge, a manager sells,
                   for example, stock index futures to protect against a de-
                   cline in the stock market. As such, if the market drops,
                   the value of the futures position will rise, thereby off-
                   setting the decline in value of the Portfolios' stock hold-
                   ings.
 
                   The High-Grade Bond Portfolio may also invest in other con-
                   ventional derivatives designed to replicate the risk/return
                   characteristics of a conventional fixed income note or
                   bond. Such derivatives would be managed, in both structure
                   and concentration, to adhere to the Portfolio's investment
                   policy restrictions as to market and credit risk.
 
                   The High-Grade Bond Portfolio also invests in a relatively
                   conservative class of collateralized mortgage obligations
                   (CMOs) which feature a high degree of cash flow predict-
                   ability and less vulnerability to mortgage prepayment risk.
                   To reduce credit risk, Vanguard purchases these classes of
                   collateralized mortgage obligations issued only by agencies
                   of the U.S. Government or privately-issued collateralized
                   mortgage obligations that carry high-quality investment-
                   grade ratings.
 
FUTURES            The primary risks associated with the use of futures con-
CONTRACTS AND      tracts and options are: (i) imperfect correlation between
OPTIONS POSE       the change in market value of the bonds held by a Portfolio
CERTAIN RISKS      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 po-
                   sition prior to its maturity date. The risk of imperfect
                   correlation will be minimized by investing in those con-
                   tracts whose price fluctuations are expected to resemble
                   those of the Portfolio's underlying securities. The risk
                   that a Portfolio will be unable to close out a futures po-
                   sition 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, a Portfolio will seg-
                   regate cash or cash equivalents in the amount of the under-
                   lying obligation.
- --------------------------------------------------------------------------------
 
28
<PAGE>
 
INVESTMENT         The Fund has adopted certain limitations on its investment
LIMITATIONS        practices. Specifically, each Portfolio of the Fund will
                   not:
 
THE FUND HAS       (a) with respect to 75% of a Portfolio's assets, purchase
ADOPTED CERTAIN        more than 10% of the outstanding voting securities of
FUNDAMENTAL            any issuer;
LIMITATIONS
                   (b) with respect to 75% of a Portfolio's assets, purchase
                       securities of any issuer (except obligations of the
                       U.S. Government and its instrumentalities) if, as a re-
                       sult, more than 5% of the Portfolio's total assets
                       would be invested in the securities of such issuer;
 
                   (c) borrow money, except from a bank (or through reverse
                       repurchase agreements) and only as a temporary or emer-
                       gency measure and in no event in excess of 15% of the
                       market value of a Portfolio's assets. Money borrowed in
                       excess of 5% of a Portfolio's total assets will be re-
                       paid prior to the purchase of additional portfolio se-
                       curities;
 
                   (d) pledge, mortgage, or hypothecate any of its assets to
                       an extent greater than 5% of the value of its total as-
                       sets;
 
                   (e) invest more than 25% of the value of its total assets
                       in any one industry, provided that: (i) this limitation
                       does not apply to obligations issued or guaranteed by
                       the U.S. Government or its agencies or instrumentali-
                       ties; (ii) utility companies will be divided according
                       to their services (for example, gas, gas transmission,
                       electric, electric and gas, and telephone will each be
                       considered a separate industry); and (iii) financial
                       service companies will be classified according to the
                       end users of their services (for example, automobile
                       finance, bank finance, and diversified finance will be
                       considered as separate industries); and
 
                   (f) invest more than 5% of its assets in the securities of
                       companies that have a continuous operating history of
                       less than three years.
 
                   These investment limitations are considered at the time in-
                   vestment securities are purchased. The limitations de-
                   scribed here and in the Statement of Additional Information
                   may be changed only with the approval of a majority of the
                   Fund's shareholders.
- --------------------------------------------------------------------------------
                   The Fund is a member of The Vanguard Group of Investment
MANAGEMENT OF      Companies, a family of more than 30 investment companies
THE FUND           with more than 90 distinct portfolios and assets in excess
                   of $190 billion. Through their jointly-owned subsidiary,
VANGUARD           The Vanguard Group, Inc. ("Vanguard"), the Fund and the
ADMINISTERS AND    other funds in the Group obtain at cost virtually all of
DISTRIBUTES THE    their corporate management, administrative, shareholder ac-
FUND               counting and distribution services. Vanguard also provides
                   investment advisory services on an at-cost basis to certain
                   Vanguard funds. As a result of Vanguard's unique corporate
                   structure, the Vanguard funds have costs substantially
                   lower than those of most competing mutual funds. In 1995,
                   the average expense ratio (annual costs including advisory
                   fees divided by total net assets) for the Vanguard funds
                   amounted to approximately .31% compared to an average of
                   1.11% for the mutual fund industry (data provided by Lipper
                   Analytical Services).
 
                                                                              29
<PAGE>
 
 
                   The Officers of the Fund manage its day-to-day operations
                   and are responsible to the Fund's Board of Trustees. The
                   Trustees set broad policies for the Fund and choose its Of-
                   ficers. A list of the Trustees and Officers of the Fund and
                   a statement of their present positions and principal occu-
                   pations during the past five years can be found in the
                   Statement of Additional Information.
 
                   Vanguard employs a supporting staff of management and ad-
                   ministrative personnel needed to provide the requisite
                   services to the funds and also furnishes the funds with
                   necessary office space, furnishings, and equipment. Each
                   fund pays its share of Vanguard's total expenses, which are
                   allocated among the funds under methods approved by the
                   Board of Trustees (Directors) of each fund. In addition,
                   each fund bears its own direct expenses, such as legal, au-
                   diting, and custodial fees.
 
                   Vanguard also provides distribution and marketing services
                   to the Vanguard funds. The Funds are available on a no-load
                   basis (i.e., there are no sales commissions or 12b-1 fees).
                   However, each fund bears its share of the Group's distribu-
                   tion costs.
 
                   The charges paid by seven of the Portfolios during the fis-
                   cal year ended September 30, 1995 for management and advi-
                   sory services, distribution, marketing and other expenses,
                   as a percentage of average net assets, are detailed below.
 
<TABLE>               
<CAPTION>
                                      MANAGEMENT
                                      & ADVISORY   EXTERNAL            MARKETING
                                       SERVICES   INVESTMENT              AND        TOTAL
                                      PROVIDED BY  ADVISORY   OTHER   DISTRIBUTION OPERATING
             PORTFOLIO                 VANGUARD    SERVICES  EXPENSES   EXPENSES   EXPENSES
             ---------                ----------- ---------- -------- ------------ ---------
             <S>                      <C>         <C>        <C>      <C>          <C>
             Money Market............    0.17%                0.03%      0.03%       0.23%
             High-Grade Bond.........    0.21%                0.06%      0.02%       0.29%
             Equity Index............    0.24%                0.02%      0.02%       0.28%
             Balanced................    0.22%      0.10%     0.02%      0.02%       0.36%
             Equity Income...........    0.22%      0.10%     0.05%      0.02%       0.39%
             Growth..................    0.26%      0.15%     0.04%      0.02%       0.47%
             International...........    0.28%      0.15%     0.09%      0.02%       0.54%
</TABLE>    
 
                   The High-Yield Bond and Small Company Growth Portfolios
                   were not in operation as of the date of this prospectus
                   and, therefore, do not have historical expense data. Van-
                   guard developed annual operating expense estimates for
                   these two Portfolios for their first full year, which are
                   outlined below:
 
<TABLE>
<CAPTION>
                                      MANAGEMENT
                                      & ADVISORY   EXTERNAL            MARKETING
                                       SERVICES   INVESTMENT              AND        TOTAL
                                      PROVIDED BY  ADVISORY   OTHER   DISTRIBUTION OPERATING
             PORTFOLIO                 VANGUARD    SERVICES  EXPENSES   EXPENSES   EXPENSES
             ---------                ----------- ---------- -------- ------------ ---------
             <S>                      <C>         <C>        <C>      <C>          <C>
             High Yield Bond.........    0.22%      0.06%     0.02%      0.02%       0.32%
             Small Company Growth....    0.22%      0.15%     0.02%      0.02%       0.41%
</TABLE>
 
                   The investment objectives and policies of the Fund's Port-
                   folios are similar to those of other Vanguard funds. The
                   Money Market Portfolio of the Fund is similar to the Prime
                   Portfolio of Vanguard Money Market Reserves; the High-Grade
                   Bond Portfolio is similar to the Total Bond Market Portfo-
                   lio of the Vanguard Bond Index Fund; the High-Yield Bond
                   Portfolio is similar to the High Yield Corporate Portfolio
                   of the Vanguard Fixed Income Securities Fund; the
 
30
<PAGE>
 
                   Balanced Portfolio is similar to Vanguard/Wellington Fund;
                   the Equity Index Portfolio is similar to the 500 Portfolio
                   of Vanguard Index Trust; the Equity Income Portfolio is
                   similar to Vanguard Equity Income Fund; the Growth Portfo-
                   lio is similar to Vanguard U.S. Growth Portfolio; the Small
                   Company Growth Portfolio is similar to the Vanguard Ex-
                   plorer Fund and the International Portfolio is similar to
                   Vanguard International Growth Portfolio. Because of differ-
                   ences in the investments held and additional administrative
                   and insurance costs associated with insurance company sepa-
                   rate accounts, the Portfolios' investment performance will
                   differ from the performance of the corresponding Vanguard
                   funds.
 
                   Shares of the Fund's Portfolios may be sold to registered
                   separate accounts of insurance companies affiliated or not
                   affiliated with Vanguard, offering variable annuity and
                   variable life products. At present, none of the Portfolios
                   foresees any disadvantages arising out of the fact that
                   each Portfolio offers its shares to separate accounts of
                   various insurance companies to serve as an investment vehi-
                   cle for their variable separate accounts. However, a mate-
                   rial conflict could arise between the interest of the dif-
                   ferent participating separate accounts. The Fund's Board of
                   Trustees intends to monitor events in order to identify any
                   material irreconcilable conflicts that may possibly arise
                   and to determine which action, if any, should be taken in
                   response to such conflicts of interest. If such conflicts
                   were to occur, one or more insurance companies' separate
                   accounts might be required to withdraw its investments in
                   one or more Portfolios, or shares of another Portfolio may
                   be substituted by the Fund. As a result, a Portfolio might
                   be forced to sell a portion of its securities at a disad-
                   vantageous price. In the event of such a material conflict,
                   the affected insurance companies agree to take any neces-
                   sary steps, including removing its separate account from
                   the Fund if required by law, to resolve the matter.
- --------------------------------------------------------------------------------
INVESTMENT         Vanguard provides investment advisory services on an at-
ADVISERS           cost basis to three Portfolios of the Fund: Vanguard's
                   Fixed Income Group provides advisory services to the Money
VANGUARD AND       Market and High-Grade Bond Portfolios, and Vanguard's Core
FIVE INDEPENDENT   Management Group provides advisory services to the Equity
INVESTMENT         Index Portfolio.
ADVISERS MANAGE
THE FUND'S         The Fund's six other Portfolios employ external investment
INVESTMENTS        advisers as follows:                                      
 
<TABLE>
<CAPTION>
             PORTFOLIO                INDEPENDENT INVESTMENT ADVISER
             ---------                ------------------------------
             <S>                      <C>
             Balanced................ Wellington Management Company
             High Yield Bond......... Wellington Management Company
             Equity Income........... Newell Associates
             Growth.................. Lincoln Capital Management
             Small Company Growth.... Granahan Investment Management, Inc.
             International........... Schroder Capital Management International, Inc.
</TABLE>
 
                   Vanguard's Fixed Income Group provides investment advisory
                   services to more than 40 Vanguard money market, bond, and
                   balanced portfolios, both taxable and tax-exempt. Total as-
                   sets under management by the Fixed Income Group were $66
                   billion as of December 31, 1995. The High-Grade Bond Port-
                   folio of the Fund is not actively managed, but is instead
                   administered by the Fixed Income Group using computerized,
                   quantitative techniques. The Fixed
 
                                                                              31
<PAGE>
 
                   Income Group is supervised by the Officers of the Fund. Ian
                   A. MacKinnon, Senior Vice President of Vanguard, has been
                   in charge of the Group since its inception in 1981.
 
                   Vanguard's Core Management Group also provides investment
                   advisory services to Vanguard Index Trust, Vanguard Inter-
                   national Equity Index Fund, Vanguard Balanced Index Fund,
                   Vanguard Institutional Index Fund, the Aggressive Growth
                   Portfolio of Vanguard Horizon Fund, a portion of
                   Vanguard/Windsor II, a portion of Vanguard/Morgan Growth
                   Fund and several indexed separate accounts. Total indexed
                   assets under management as of December 31, 1995, were $33
                   billion. The Fund's Equity Index Portfolio is not actively
                   managed, but is instead administered by the Core Management
                   Group using computerized, quantitative techniques. The
                   Group is supervised by the Fund's Officers.
 
                   Vanguard's investment management staff is also responsible
                   for the allocation of principal business and portfolio bro-
                   kerage and the negotiation of commissions. For the Money
                   Market Portfolio, the purchase and sale of investment secu-
                   rities will ordinarily be principal transactions. Portfolio
                   securities will normally be purchased directly from the is-
                   suer or from an underwriter or market maker for the securi-
                   ties. There will usually be no brokerage commissions paid
                   by the Money Market Portfolio for such purchases. Purchases
                   from underwriters of securities will include a commission
                   or concession paid by the issuer to the underwriter, and
                   purchases from dealers serving as market makers will in-
                   clude a dealer's mark-up.
 
                   In placing portfolio transactions, Vanguard's advisory
                   staff uses its best judgment to choose the broker most ca-
                   pable of providing the brokerage services necessary to ob-
                   tain the best available price and most favorable execution
                   at the lowest commission rate. The full range and quality
                   of brokerage services available are considered in making
                   these determinations. In selecting broker-dealers to exe-
                   cute securities transactions for the Portfolios, considera-
                   tion will be given to such factors as: the price of the se-
                   curity; the rate of the commission; the size and difficulty
                   of the order; the reliability, integrity, financial condi-
                   tion, general execution, and operational capabilities of
                   competing broker-dealers; and the brokerage and research
                   services provided to the Fund.
 
                   The Fund employs five independent investment advisers. Wel-
                   lington Management Company ("WMC"), 75 State Street, Bos-
                   ton, MA 02109, serves as investment adviser to the Fund's
                   Balanced and High-Yield Bond Portfolios. Newell Associates
                   ("Newell"), 525 University Avenue, Palo Alto, CA 94301, is
                   adviser to the Equity Income Portfolio. Lincoln Capital
                   Management Company ("Lincoln"), 200 South Wacker Drive,
                   Chicago, IL 60606, serves as the adviser to the Growth
                   Portfolio. Granahan Investment Management, Inc.
                   ("Granahan"), 275 Wyman Street, Waltham, MA 02154, provides
                   advisory services to the Small Company Growth Portfolio.
                   Schroder Capital Management International, Inc. ("Schroder
                   Capital"), 787 Seventh Avenue, New York, NY 10019, serves
                   as the adviser to the International Portfolio. Under advi-
                   sory agreements with the Fund, WMC, Newell, Lincoln,
                   Granahan and Schroder Capital manage the investment and re-
                   investment of the assets of the High Yield Bond and Bal-
                   anced, Equity Income, Growth, Small Company Growth and
 
32
<PAGE>
 
                   International Portfolios, respectively, and continuously
                   review, supervise and administer each Portfolio's invest-
                   ment program. The advisers discharge their responsibilities
                   subject to the control of the Officers and Trustees of the
                   Fund.
 
WELLINGTON         WMC is a professional investment advisory firm that glob-
MANAGEMENT         ally provides services to investment companies, institu-
COMPANY SERVES     tions, and individuals. Among the clients of WMC are more
AS ADVISER TO      than 10 of the investment companies of The Vanguard Group.
THE BALANCED AND   As of September 30, 1995, WMC held discretionary management
HIGH YIELD BOND    authority with respect to more than $104 billion of assets.
PORTFOLIOS         WMC and its predecessor organizations have provided advi-
                   sory services to investment companies since 1933 and to in-
                   vestment counseling clients since 1960.
 
                   Ernst H. von Metzsch, Senior Vice President of WMC, serves
                   as portfolio manager of the Balanced Portfolio. Mr. von
                   Metzsch is assisted by Paul D. Kaplan, Senior Vice Presi-
                   dent of WMC. Mr. von Metzsch who has served in this capac-
                   ity since September 1995 and Mr. Kaplan who has served in
                   this capacity since March 1994, are supported by research
                   and other investment services provided by the professional
                   staff of WMC. Mr. von Metzsch and Mr. Kaplan have been em-
                   ployed by WMC for 22 and 18 years, respectively.
 
                   To compensate WMC for advisory services for the Balanced
                   Portfolio, the Fund pays WMC a basic advisory fee at the
                   end of each fiscal quarter, calculated by applying a quar-
                   terly rate, based on the following annual percentage rates,
                   to the average month-end net assets of the Balanced Portfo-
                   lio for the quarter:
 
<TABLE>
<CAPTION>
                   NET ASSETS          RATE
                   ---------------     -----
                   <S>                 <C>
                   Up to $500 million  0.10%
                   Over $500 million   0.05%
</TABLE>
 
                   The basic advisory fee may be increased or decreased by ap-
                   plying an adjustment formula based on the investment per-
                   formance of the Balanced Portfolio relative to the invest-
                   ment record of a "Combined Index," 65% of which shall be
                   comprised of the Standard & Poor's Composite Stock Price
                   Index and 35% of which shall be comprised of the Salomon
                   Brothers High Grade Corporate Bond Index. The basic fee may
                   be increased or decreased under the formula by an amount
                   equal to .015% per annum (.00375% per quarter) of the first
                   $500 million of the average month-end assets of the Fund,
                   and .010% per annum (.0025% per quarter) of the average
                   month-end assets over $500 million. For additional informa-
                   tion on the advisory fees paid by the Fund, please see the
                   Statement of Additional Information.
 
                   During the fiscal year ended September 30, 1995, the total
                   advisory fees paid by the Fund to WMC for managing the Bal-
                   anced Portfolio represented an effective annual rate of .10
                   of 1% of its average net assets.
 
                   Earl E. McEvoy, Senior Vice President of WMC, serves as
                   portfolio manager of the High Yield Bond Portfolio. Mr. Mc-
                   Evoy is supported by research and other investment services
                   provided by the professional staff of WMC. Mr. McEvoy has
                   been serving as portfolio manager for the High Yield Corpo-
                   rate Portfolio of the Vanguard Fixed Income Securities Fund
                   since 1984.
 
                                                                              33
<PAGE>
 
 
                   To compensate WMC for its advisory services for the High
                   Yield Bond Portfolio, the Fund pays WMC an advisory fee
                   calculated by applying an annual rate of .06% to the aver-
                   age month-end net assets of the High-Yield Bond Portfolio
                   for the quarter.
 
NEWELL             The principal investment officer of Newell, Roger D.
ASSOCIATES         Newell, has managed equity portfolios for more than 25
SERVES AS          years, employing an income-oriented equity strategy since
ADVISER TO THE     1975. The approach is based upon an analysis of how a
EQUITY INCOME      stock's yield, relative to the market, varies over time.
PORTFOLIO          Newell's strategy asserts that relative yield is an excel-
                   lent guide to relative value. Newell, formed in 1986, is a
                   California corporation in which a controlling interest is
                   owned by its Directors and Officers: Roger D. Newell, Rob-
                   ert A. Huret and Alan E. Rothenberg. As of September 30,
                   1995, Newell's assets under management were approximately
                   $1.1 billion. Mr. Newell has been responsible for oversee-
                   ing the implementation of the firm's strategy for the Eq-
                   uity Income Portfolio since its inception.
 
                   The Fund pays Newell an advisory fee at the end of each
                   fiscal quarter, calculated by applying a quarterly rate,
                   based on an annual percentage rate of .10%, to the average
                   month-end net assets of the Equity Income Portfolio for the
                   quarter. During the fiscal year ended September 30, 1995,
                   the total advisory fees paid by the Fund to Newell repre-
                   sented an effective annual rate of .10 of 1% of average net
                   assets of the Equity Income Portfolio.
 
LINCOLN CAPITAL    Lincoln, an investment advisory firm founded in 1967,
SERVES AS          currently provides investment counseling services to a
ADVISER TO THE     limited number of clients, most of which are institutional
GROWTH PORTFOLIO   clients, such as pension funds. Currently, Lincoln holds
                   discretionary management authority with respect to
                   approximately $32.7 billion in assets.
 
                   Lincoln employs a team of investment professionals who each
                   participate in investment strategy formulation and issue
                   selection. Client equity portfolios are highly similar in
                   terms of their stock composition. The individuals responsi-
                   ble for overseeing the implementation of the firm's strat-
                   egy for the Growth Portfolio, who have served in this ca-
                   pacity since the Portfolio's inception, are J. Parker Hall
                   III, President of Lincoln, and David M. Fowler, Vice Presi-
                   dent of Lincoln. Mr. Hall and Mr. Fowler have been employed
                   by Lincoln for 24 and 11 years, respectively.
 
                   The Fund pays Lincoln an advisory fee calculated by apply-
                   ing an annual rate of .15% to the average net assets of the
                   Growth Portfolio. During the fiscal year ended September
                   30, 1995, the total advisory fees paid by the Fund to Lin-
                   coln, represented an effective annual rate of .15 of 1% of
                   average net assets of the  Growth Portfolio.
 
GRANAHAN SERVES    Granahan is a professional investment advisory firm founded
AS ADVISER TO      in 1985. As of December 31, 1995, Granahan held discretion-
THE SMALL          ary management authority with respect to approximately $813
COMPANY GROWTH     million in assets. John J. Granahan is portfolio manager of
PORTFOLIO          the assets of the Small Company Growth Portfolio. Mr.
                   Granahan has been serving as portfolio manager of the Van-
                   guard Explorer Fund since February 1990. Prior to that, he
                   served as portfolio manager of Vanguard Explorer II from
                   its inception in June 1985 through its merger with the
 
34
<PAGE>
 
                   Explorer Fund in February 1990. Mr. Granahan also served as
                   portfolio manager of Explorer Fund from January 1972 to
                   September 1979 while employed at WMC.
 
                   The Fund pays Granahan a basic advisory fee at the end of
                   each fiscal quarter, calculated by applying a quarterly
                   rate, based on an annual percentage rate of 0.15% to the
                   average month-end net assets of the Portfolio for the quar-
                   ter.
 
                   The basic advisory fee is increased or decreased by apply-
                   ing an adjustment formula based on the investment perfor-
                   mance of the Portfolio relative to the investment record of
                   the Russell 2000 Small Company Index.
 
SCHRODER CAPITAL   Schroder Capital is a wholly-owned subsidiary of Schroders
SERVES AS          PLC. Schroders PLC is the holding company parent of a large
ADVISER TO THE     worldwide group of banks and financial service companies
INTERNATIONAL      (referred to as "The Schroder Group") with associated com-
PORTFOLIO          panies and branch and representative offices located in
                   twenty-four countries. The Schroder Group specializes in
                   providing investment management services, with Group funds
                   under management currently in excess of $102 billion.
 
                   Richard Foulkes, Executive Vice President of Schroder Capi-
                   tal, serves as Portfolio Manager of the International Port-
                   folio. He is supported by research teams in twelve offices
                   world wide and by four teams of regional specialists in the
                   London office. Mr. Foulkes has been employed by Schroder
                   Capital for 27 years.
 
                   The Portfolio pays Schroder Capital a basic advisory fee at
                   the end of each fiscal quarter, calculated by applying a
                   quarterly rate, based on an annual percentage rate of
                   0.125%, to the average month-end net assets of the Portfo-
                   lio. This basic advisory fee is increased or decreased by
                   applying an adjustment formula based on the investment per-
                   formance of the Portfolio relative to the investment record
                   of the Morgan Stanley Capital International Europe, Austra-
                   lia, Far East Index ("EAFE") over the preceding 36-month
                   period. During the period June 3, 1994 (commencement of the
                   Portfolio's operations) to September 30, 1995, the total
                   advisory fees paid by the Fund to Schroder Capital repre-
                   sented an effective annual rate of .15% of 1% of average
                   net assets of the International Portfolio.
 
                   The investment advisory agreements authorize WMC, Newell,
                   Lincoln, Granahan and Schroder (with approval of the Fund's
                   Board of Trustees) to select the brokers or dealers that
                   will execute the purchases and sales of portfolio securi-
                   ties for each Portfolio and direct the advisers to use
                   their best efforts to obtain the best available price and
                   most favorable execution with respect to all transactions
                   for the Portfolio. The full range and quality of brokerage
                   services available are considered in making these determi-
                   nations. The Fund has authorized the advisers to pay higher
                   commissions in recognition of brokerage services felt nec-
                   essary to the achievement of better execution, provided the
                   advisers believe this to be in the best interests of the
                   Portfolio and the Fund.
 
                   The Fund's Board of Trustees may, without the approval of
                   shareholders, provide for: (a) the employment of a new in-
                   vestment 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
 
                                                                              35
<PAGE>
 
                   same advisory contract terms where a contract has been as-
                   signed 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.
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DIVIDENDS,         Each Portfolio expects to distribute substantially all of
CAPITAL GAINS      its ordinary income and capital gains each year. Dividends
AND TAXES          for the Money Market, High-Grade Bond and High Yield Bond
                   Portfolios are accrued daily and distributed monthly. The
DIVIDENDS AND      Balanced, Equity Index and Equity Income Portfolios will
CAPITAL GAINS      distribute dividends each quarter while the Growth, Small
MAY ACCUMULATE     Company Growth and International Portfolios distribute div-
FREE OF FEDERAL    idends annually. Capital gains distributions, if any, from
INCOME TAX         the Portfolios will be made annually.
 
                   All dividend and capital gains distributions from a Portfo-
                   lio will be automatically reinvested in additional shares
                   of the Portfolio.
 
                   Each Portfolio of 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. In addition, each Portfolio intends to
                   qualify under the Internal Revenue Code with respect to the
                   diversification requirements related to the tax-deferred
                   status of insurance company separate accounts.
 
                   Shares of the Portfolios must be purchased through variable
                   life insurance or variable annuity contracts. As a result,
                   it is anticipated that any dividend or capital gains dis-
                   tributions from a Portfolio of the Fund will be exempt from
                   current taxation if left to accumulate within a variable
                   life insurance or variable annuity contract. The Fund is
                   managed without regard to tax ramifications. Withdrawals
                   from such contracts may be subject to ordinary income tax
                   plus a 10% penalty tax if made before age 59 1/2.
 
                   The tax status of your investment in the Fund depends upon
                   the features of your variable life insurance or variable
                   annuity contract. For further information, please refer to
                   the prospectus of the insurance company separate account
                   that offers your contract.
- --------------------------------------------------------------------------------
THE SHARE PRICE    Each Portfolio's share price or "net asset value" per share
OF EACH            is calculated daily at the close of regular trading of the
PORTFOLIO          New York Stock Exchange (generally 4:00 p.m. Eastern time).
                   Each Portfolio determines its net asset value per share by
                   subtracting the Portfolio's liabilities (including accrued
                   expenses and dividends payable) from the total value of the
                   Portfolio's investments and other assets and dividing the
                   result by the total outstanding shares of the Portfolio.
 
                   For the purpose of calculating the Money Market Portfolio's
                   net asset value per share, securities are valued by the
                   "amortized cost" method of valuation, which does not take
                   into account unrealized gains or losses. This involves val-
                   uing an instrument at its cost and thereafter assuming a
                   constant amortization to maturity of any discount or premi-
                   um, regardless of the impact of fluctuating interest rates
                   on the market value of the instrument. While this method
                   provides certainty in valuation, it may result in periods
                   during which
 
36
<PAGE>
 
                   value, as determined by amortized cost, is higher or lower
                   than the price the Portfolio would receive if it sold the
                   instrument.
 
                   The use of amortized cost and the maintenance of the Money
                   Market Portfolio's per share net asset value at $1.00 is
                   based on its election to operate under the provisions of
                   Rule 2a-7 under the Investment Company Act of 1940. As a
                   condition of operating under that rule, the Money Market
                   Portfolio must maintain a dollar-weighted average portfolio
                   maturity of 90 days or less, purchase only instruments hav-
                   ing remaining maturities of 13 months or less, and invest
                   only in securities that are determined by the Trustees to
                   present minimal credit risks and that are of high quality
                   as determined by any major rating service, or in the case
                   of any instrument not so rated, considered by the Trustees
                   to be of comparable quality.
 
                   The Trustees have also agreed to establish procedures rea-
                   sonably designed, taking into account current market condi-
                   tions and the Money Market Portfolio's investment objec-
                   tive, to stabilize the net asset value per share as com-
                   puted for the purposes of sales and redemptions at $1.00.
                   These procedures include periodic review, as the Trustees
                   deem appropriate and at such intervals as are reasonable in
                   light of current market conditions, of the relationship be-
                   tween the amortized cost value per share and a net asset
                   value per share based upon available indications of market
                   value. In such a review, investments for which market quo-
                   tations are readily available are valued at the most recent
                   bid price or quoted yield equivalent for such securities or
                   for securities of comparable maturity, quality and type as
                   obtained from one or more of the major market makers for
                   the securities to be valued. Other investments and assets
                   are valued at fair value, as determined in good faith by
                   the Trustees.
 
                   For the other Portfolios of the Fund, securities that are
                   listed on a securities exchange are valued at the latest
                   quoted sale prices as of 4:00 p.m. on the day the valuation
                   is made. Price information on listed securities is taken
                   from the exchange where the security is primarily traded.
                   Listed securities not traded on the valuation date for
                   which market quotations are available are valued at the
                   mean between the bid and asked prices. Unlisted securities
                   are valued at the latest bid price.
 
                   Securities listed on a foreign exchange, as well as Ameri-
                   can Depository Receipts ("ADRs"), which are traded on U.S.
                   exchanges are valued at the latest quoted sales price
                   available before the time when assets are valued. All
                   prices of listed securities are taken from the exchange
                   where the security is primarily traded.
 
                   Securities regularly traded in the over-the-counter market
                   for which market quotations are readily available will be
                   valued at the latest quoted bid price. Other assets and se-
                   curities for which no quotations are readily available will
                   be valued in a manner determined in good faith by the Board
                   of Trustees to reflect their fair value.
 
                   To help determine its daily share price, each Portfolio
                   calculates the value of its foreign securities in U.S. dol-
                   lars. The Portfolios use the daily exchange rate employed
                   by Morgan Stanley Capital International (MSCI) in the cal-
                   culation of its own indexes. MSCI determines this exchange
                   rate either before or after
 
                                                                              37
<PAGE>
 
                   the close of a foreign securities market. If MSCI's ex-
                   change rate is not available, the Portfolios use a rate ac-
                   cording to policies set by the Portfolio's Board of Trust-
                   ees.
 
                   Securities, particularly bonds and other fixed-income secu-
                   rities, 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 prices pro-
                   vided by a pricing service may be determined without regard
                   to bid or last sale prices of each security but take into
                   account institutional size transactions in similar groups
                   of securities as well as any developments related to spe-
                   cific securities. Short-term instruments (those with re-
                   maining maturities of 60 days or less) are valued at cost,
                   plus or minus any amortized discount or premium, which ap-
                   proximates market. Other securities, including restricted
                   securities for which no quotations are readily available,
                   are valued at fair value as determined in good faith by the
                   Board of Trustees.
- --------------------------------------------------------------------------------
GENERAL            Vanguard Variable Insurance Fund is a Pennsylvania business
INFORMATION        trust. The Declaration of Trust permits the Trustees to is-
                   sue an unlimited number of shares of beneficial interest,
                   without par value, from an unlimited number of classes of
                   shares. Currently the Fund is offering nine classes of
                   shares (known as "Portfolios").
 
                   Shares of each Portfolio when issued are fully paid and
                   non-assessable; participate equally in dividends, distribu-
                   tions and net assets; are entitled to one vote per share;
                   have pro rata liquidation rights; and do not have pre-
                   emptive rights. Also, shares of the Fund have non-cumula-
                   tive voting rights, meaning that the holders of more than
                   50% of the shares voting for the election of the Trustees
                   can elect all of the Trustees if they so choose.
 
                   Annual meetings of shareholders will not be held except as
                   required by the Investment Company Act of 1940 and other
                   applicable law. An annual meeting will be held to vote on
                   the removal of a Trustee or Trustees of the Fund if re-
                   quested in writing by the holders of not less than 10% of
                   the outstanding shares of the Fund.
 
                   All securities and cash are held by CoreStates Bank, N.A.,
                   Philadelphia, PA, for the Money Market, High-Grade Bond,
                   Balanced and Equity Index Portfolios; Chase Manhattan Bank,
                   N.A., New York, NY for the High Yield Bond Portfolio; State
                   Street Bank and Trust Company, Boston, MA, for the Equity
                   Income, Growth, and Small Company Growth Portfolios; and
                   Morgan Stanley Trust Company for the International Portfo-
                   lio. The Vanguard Group, Inc., Valley Forge, PA, serves as
                   the Fund's Transfer and Dividend Disbursing Agent. Price
                   Waterhouse LLP, serves as independent accountants for the
                   Fund and will audit its financial statements annually. The
                   Fund is not involved in any litigation.
- --------------------------------------------------------------------------------
SHAREHOLDER        Investors may not purchase shares of the Portfolios direct-
GUIDE              ly, but only through variable life insurance and variable
                   annuity contracts offered through the separate accounts of
SEE THE            various insurance companies. Refer to the prospectus for
INSURANCE          the insurance company's separate account for information on
PROSPECTUS FOR     how to purchase a variable life insurance or variable annu-
DETAILS            ity contract and how to select specific Portfolios of the
                   Fund as investment options for your contract.
 
38
<PAGE>
 
 
                   Investments in a Portfolio are credited to an insurance
                   company's separate account once they have been received by
                   Vanguard.
 
                   If the Board of Trustees determines that continued offering
                   of shares would be detrimental to the best interests of the
                   Fund's shareholders, the Fund may suspend the offering of
                   shares for a period of time. If the Board of Trustees de-
                   termines that a specific purchase acceptance would be det-
                   rimental to the best interest of the Fund's shareholders,
                   the Fund may reject such a purchase request.
 
                   If you wish to redeem monies from the Fund, please refer to
                   the instructions provided in the prospectus for the insur-
                   ance company's separate account. Shares of a Portfolio may
                   be redeemed on any business day. The redemption price of
                   shares will be at the next-determined net asset value per
                   share. Redemption proceeds will be wired to the administra-
                   tor for distribution to the contract owner generally on the
                   day following receipt of the redemption request, but no
                   later than seven business days. Contract owners will re-
                   ceive a check from the administrator for the redemption
                   amount.
 
                   The Fund may suspend the redemption right or postpone pay-
                   ment at times when the New York Stock Exchange is closed or
                   under any emergency circumstances as determined by the
                   United States Securities and Exchange Commission.
 
                   If the Board of Trustees determines that it would be detri-
                   mental to the best interests of the Fund's remaining share-
                   holders to make payment in cash, the Fund may pay redemp-
                   tion proceeds in whole or in part by a distribution in kind
                   of readily marketable securities.
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                                                                              39
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<PAGE>
 
                                                           [LOGO OF VANGUARD
                                                           VARIABLE ANNUITY PLAN
                                                           APPEARS HERE]
 
 
 
 
 
                                   


[LOGO OF THE VANGUARD GROUP APPEARS HERE]
 
PROVIDIAN LIFE & HEALTH INSURANCE COMPANY
 
A subsidiary of Providian Corporation                       PROSPECTUS
                                                                             
                                                                       
P064                                                                092596     


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