WARBURG PINCUS INSTITUTIONAL FUND INC
497, 1999-03-24
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<PAGE>   1
 
        SUPPLEMENT TO PROSPECTUS AND STATEMENT OF ADDITIONAL INFORMATION
                           (Dated February 22, 1999)
 
                    WARBURG PINCUS INSTITUTIONAL FUND, INC.
                             JAPAN GROWTH PORTFOLIO
 
                        WARBURG PINCUS JAPAN GROWTH FUND
 
                    WARBURG PINCUS JAPAN SMALL COMPANY FUND
 
                   WARBURG PINCUS MAJOR FOREIGN MARKETS FUND
 
The following information supplements certain information in the prospectus and
statement of additional information of each Warburg Pincus Fund/Portfolio listed
above in the section entitled "Meet the Manager(s)":
 
WARBURG PINCUS JAPAN GROWTH FUND, WARBURG PINCUS JAPAN SMALL COMPANY FUND AND
THE JAPAN GROWTH PORTFOLIO OF WARBURG PINCUS INSTITUTIONAL FUND
 
Todd Jacobson, CFA, serves as Associate Portfolio Manager of the funds, along
with Portfolio Manager P. Nicholas Edwards. Mr. Jacobson joined Warburg in 1997.
Previously, Mr. Jacobson was an analyst at Brown Brothers Harriman from 1993 to
1997.
 
WARBURG PINCUS MAJOR FOREIGN MARKETS FUND
 
Todd Jacobson, CFA, serves as Associate Portfolio Manager of the fund, along
with Co-Portfolio Managers P. Nicholas Edwards, Harold W. Ehrlich and Richard H.
King and Associate Portfolio Managers Vincent J. McBride, J.H. Cullum Clark and
Nancy Nierman. Mr. Jacobson joined Warburg in 1997. Previously, Mr. Jacobson was
an analyst at Brown Brothers Harriman from 1993 to 1997.
 
Dated: March 23, 1999                                                16-0399 for
                                                                           WPINI
                                                                           WPISF
                                                                           WPJPN
                                                                           ADJPG
<PAGE>   2
 
                 SUPPLEMENT TO THE PROSPECTUS AND STATEMENT OF
                             ADDITIONAL INFORMATION
                    WARBURG PINCUS INSTITUTIONAL FUND, INC.
 
     On February 15, 1999, Warburg Pincus and Credit Suisse Group announced that
they reached an agreement for Credit Suisse to acquire Warburg Pincus Asset
Management, Inc., the investment adviser to the portfolios of Warburg Pincus
Institutional Fund, Inc. Under the terms of the arrangement, no immediate
changes are planned to Warburg Pincus investment portfolio managers and
investment professionals.
 
     The fund's Board of Directors and portfolio shareholders will be asked to
vote on the "assignment" of the portfolios' current investment advisory
agreements with Warburg Pincus Asset Management. Shareholders will receive more
information about the advisory agreement arrangements, but until then
shareholders do not need to take any action relating to their Warburg Pincus
portfolio shares.
 
     The transaction is expected to be complete in mid-1999 upon satisfaction of
the various conditions in the agreement.
 
Date: February 22, 1999                                               16-0299
                                                                      for
                                                                      WPINI
                                                                      WPINU
<PAGE>   3
 
                                   PROSPECTUS
                               February 22, 1999
 
           WARBURG PINCUS INSTITUTIONAL FUND, INC.
 
                                     -- INTERNATIONAL EQUITY PORTFOLIO
 
                                     -- EMERGING MARKETS PORTFOLIO
 
                                     -- JAPAN GROWTH PORTFOLIO
 
           As with all mutual funds, the Securities and Exchange
           Commission has not approved these portfolios, nor has it
           passed upon the adequacy or accuracy of this Prospectus.
           It is a criminal offense to state otherwise.
 
                          [WARBURG PINCUS FUNDS LOGO]
<PAGE>   4
 
                       This page intentionally left blank
 
<TABLE>
<S>                                                  <C>
KEY POINTS.................... ....................           4
   Goals and Principal Strategies..................           4
   Investor Profile................................           4
   A Word About Risk...............................           5
 
PERFORMANCE SUMMARY............... ................           8
   Year-by-Year Total Returns......................           8
   Average Annual Total Returns....................           9
 
INVESTOR EXPENSES................ .................          10
   Fees and Portfolio Expenses.....................          10
   Example.........................................          11
 
THE PORTFOLIOS IN DETAIL............. .............          12
   The Management Firm.............................          12
   Portfolio Information Key.......................          13
 
INTERNATIONAL EQUITY PORTFOLIO.......... ..........          14
 
EMERGING MARKETS PORTFOLIO............ ............          16
 
JAPAN GROWTH PORTFOLIO.............. ..............          20
 
MORE ABOUT RISK................. ..................          22
   Introduction....................................          22
   Types of Investment Risk........................          22
   Certain Investment Practices....................          25
 
MEET THE MANAGERS................ .................          28
 
ABOUT YOUR ACCOUNT................ ................          30
   Share Valuation.................................          30
   Account Statements..............................          30
   Distributions...................................          30
   Taxes...........................................          31
 
BUYING SHARES.................. ...................          32
 
SELLING SHARES.................. ..................          34
 
OTHER POLICIES.................. ..................          36
 
FOR MORE INFORMATION............... ...............  back cover
</TABLE>
 
                                        3
 
                                    CONTENTS
<PAGE>   5
 
<TABLE>
<S>                           <C>                <C>
PORTFOLIO/RISK FACTORS        GOAL               STRATEGIES
INTERNATIONAL EQUITY          Long-term capital  - Invests in foreign equity
PORTFOLIO                     appreciation       securities
Risk factors:                                    - Diversifies its investments
 Market risk                                     across countries, including
 Foreign securities                                emerging markets
                                                 - Favors stocks with discounted
                                                   valuations, using a value-based,
                                                   bottom-up investment approach
EMERGING MARKETS PORTFOLIO    Growth of capital  - Invests in foreign equity
Risk factors:                                    securities
 Market risk                                     - Focuses on the world's less
 Foreign securities                              developed countries
 Emerging-markets focus                          - Analyzes a company's growth
 Non-diversified status                          potential, using a bottom-up
                                                   investment approach
JAPAN GROWTH PORTFOLIO        Long-term growth   - Invests in equity securities of
Risk factors:                 of capital         Japanese companies
 Market risk                                     - May invest in companies of any
 Foreign securities                              size
 Country focus                                   - May look for companies with
 Non-diversified status                          attractive growth potential or
                                                   companies whose equity
                                                   securities appear undervalued
</TABLE>
 
     INVESTOR PROFILE
 
   THESE PORTFOLIOS ARE DESIGNED FOR INVESTORS WHO:
 
 - have longer time horizons
 
 - are willing to assume the risk of losing money in exchange for attractive
  potential long-term returns
 
 - are investing for growth or capital appreciation
 
 - want to diversify their portfolios internationally
 
   THEY MAY NOT BE APPROPRIATE IF YOU:
 
 - are investing for a shorter time horizon
 
 - are uncomfortable with an investment that has a higher degree of volatility
 
 - want to limit your exposure to foreign securities
 
 - are looking for income
 
   You should base your selection of a portfolio on your own goals, risk
preferences and time horizon.
 
                                        4
 
                                   KEY POINTS
                         GOALS AND PRINCIPAL STRATEGIES
<PAGE>   6
 
     A WORD ABOUT RISK
 
   All investments involve some level of risk. Simply defined, risk is the
possibility that you will lose money or not make money.
 
   Principal risk factors for the portfolios are discussed below. Before you
invest, please make sure you understand the risks that apply to your portfolio.
As with any mutual fund, you could lose money over any period of time.
 
   Investments in the portfolios are not bank deposits and are not insured or
guaranteed by the Federal Deposit Insurance Corporation or any other government
agency.
 
MARKET RISK
All portfolios
 
   The market value of a security may move up and down, sometimes rapidly and
unpredictably. These fluctuations, which are often referred to as "volatility,"
may cause a security to be worth less than it was worth at an earlier time.
Market risk may affect a single issuer, industry, sector of the economy, or the
market as a whole. Market risk is common to most investments--including stocks
and bonds, and the mutual funds that invest in them.
 
FOREIGN SECURITIES
All portfolios
 
   A portfolio that invests outside the U.S. carries additional risks that
include:
 
 - CURRENCY RISK Fluctuations in exchange rates between the U.S. dollar and
   foreign currencies may negatively affect an investment. Adverse changes in
   exchange rates may erode or reverse any gains produced by foreign-currency
   denominated investments and may widen any losses. Each of the portfolios may,
   but is not required to, seek to reduce currency risk by hedging part or all
   of its exposure to various foreign currencies.
 
 - INFORMATION RISK Key information about an issuer, security or market may be
   inaccurate or unavailable.
 
 - POLITICAL RISK Foreign governments may expropriate assets, impose capital or
   currency controls, impose punitive taxes, or nationalize a company or
   industry. Any of these actions could have a severe effect on security prices
   and impair a portfolio's ability to bring its capital or income back to the
   U.S. Other political risks include economic policy changes, social and
   political instability, military action and war.
 
COUNTRY FOCUS
Japan Growth Portfolio
 
   Focusing on a single country involves increased currency, political,
regulatory and other risks. Market swings in the targeted country (Japan) will
have a greater effect on portfolio performance than they would in a more
geographically diversified equity portfolio.
                                        5
<PAGE>   7
 
EMERGING-MARKETS FOCUS
Emerging Markets Portfolio
 
   Focusing on emerging (less developed) markets involves higher levels of risk,
including increased currency, information, liquidity, market, political and
valuation risks. Deficiencies in regulatory oversight, market infrastructure,
shareholder protections and company laws could expose the portfolio to
operational and other risks as well. Some countries may have restrictions that
could limit the portfolio's access to attractive opportunities. Additionally,
emerging markets often face serious economic problems (such as high external
debt, inflation and unemployment) that could subject the portfolio to increased
volatility or substantial declines in value.
 
NON-DIVERSIFIED STATUS
Emerging Markets Portfolio,
Japan Growth Portfolio
 
   Compared to a diversified mutual fund, a non-diversified portfolio may invest
a greater share of its assets in the securities of fewer companies. The
portfolio managers typically have diversified the portfolio's investments.
However, to the extent that the portfolio uses non-diversification, it may be
more volatile than a diversified fund.
 
                                        6
<PAGE>   8
 
                       This page intentionally left blank
 
                                        7
<PAGE>   9
                              PERFORMANCE SUMMARY 
The bar chart below and the table on the next page provide an indication of the
risks of investing in these portfolios. The bar chart shows you how each
portfolio's performance has varied from year to year for up to 10 years. The
table compares each portfolio's performance over time to that of a broadly based
securities market index and other indexes, if applicable. As with all mutual
funds, past performance is not a prediction of the future.
                           YEAR-BY-YEAR TOTAL RETURNS
 
INTERNATIONAL EQUITY PORTFOLIO
Best quarter: 18.04% (Q4 93)
Worst quarter: -16.85% (Q3 98)
Inception date: 9/1/92

<TABLE>
<CAPTION>
                                                     BALANCED FUND
<S>                                             <C>
1992
1993                                                     52.36
1994                                                      0.86
1995                                                      9.91
1996                                                     11.23
1997                                                     -2.57
1998                                                      6.15
</TABLE>
 
EMERGING MARKETS PORTFOLIO
Best quarter: 14.39% (Q2 97)
Worst quarter: -16.85% (Q3 98)
Inception date: 9/30/96
<TABLE>
<CAPTION>
                                                     BALANCED FUND
<S>                                             <C>
1992
1993
1994
1995
1996
1997                                                    -14.49
1998                                                    -25.23
</TABLE>
 

JAPAN GROWTH PORTFOLIO
Best quarter: 9.04% (Q1 98)
Worst quarter: -5.77% (Q3 98)
Inception date: 10/31/97
<TABLE>
<CAPTION>
                                                     BALANCED FUND
<S>                                             <C>
1992
1993
1994
1995
1996
1997
1998                                                     8.75
</TABLE>
 
                                        8
 

<PAGE>   10
 
                          AVERAGE ANNUAL TOTAL RETURNS
 
<TABLE>
<CAPTION>
                                ONE YEAR   FIVE YEARS   10 YEARS    LIFE OF   INCEPTION
    PERIOD ENDED 12/31/98:        1998     1994-1998    1989-1998    FUND       DATE
<S>                             <C>        <C>          <C>         <C>       <C>
INTERNATIONAL EQUITY PORTFOLIO    6.15%       4.98%          NA     11.12%      9/1/92
- ------------------------------
MSCI ALL COUNTRY WORLD
  EXCLUDING THE U.S. INDEX(1)    14.09%       7.54%          NA     10.24%(2)
- ------------------------------
EMERGING MARKETS PORTFOLIO      -25.23%          NA          NA     -16.62%    9/30/96
- ------------------------------
MSCI EMERGING MARKETS FREE
  INDEX(3)                      -25.33%          NA          NA     -17.05%
- ------------------------------
JAPAN GROWTH PORTFOLIO            8.75%          NA          NA      2.72%    10/31/97
- ------------------------------
TOKYO STOCK EXCHANGE INDEX
  (TOPIX)(4)                      7.66%          NA          NA     -7.10%
</TABLE>
 
(1) The Morgan Stanley Capital International All Country World Excluding the
    U.S. Index is a market-capitalization-weighted index of companies listed on
    stock exchanges outside of the U.S.
(2) Performance since August 31, 1992.
(3) The Morgan Stanley Capital International Emerging Markets Free Index is a
    market-capitalization-weighted index of emerging-market countries determined
    by Morgan Stanley. The index includes only those countries open to non-local
    investors.
(4) The Topix is an unmanaged capitalization-weighted index (with no defined
    investment objective) designed to reflect the general movement of the
    Japanese stock market. The index consists of all shares listed on the First
    Section of the Tokyo Stock Exchange, which is generally reserved for Japan's
    larger companies.
 
                           UNDERSTANDING PERFORMANCE
 
   - TOTAL RETURN tells you how much an investment in a portfolio has changed
    in value over a given time period. It assumes that all dividends and
    capital gains (if any) were reinvested in additional shares. The change
    in value can be stated either as a cumulative return or as an average
    annual rate of return.
 
   - A CUMULATIVE TOTAL RETURN is the actual return of an investment for a
    specified period. The year-by-year total returns in the bar chart are
    examples of one-year cumulative total returns.
 
   - An AVERAGE ANNUAL TOTAL RETURN applies to periods longer than one year.
    It smoothes out the variations in year-by-year performance to tell you
    what constant annual return would have produced the investment's actual
    cumulative return. This gives you an idea of an investment's annual
    contribution to your portfolio, assuming you held it for the entire
    period.
 
   - Because of compounding, the average annual total returns in the table
    cannot be computed by averaging the returns in the bar chart.
 
                                        9
<PAGE>   11
 
                          FEES AND PORTFOLIO EXPENSES
 
This table describes the fees and expenses you may bear as a shareholder. Annual
portfolio operating expense figures are for the fiscal year ended October 31,
1998.
 
<TABLE>
<CAPTION>
                                                     INTERNATIONAL     EMERGING      JAPAN
                                                         EQUITY         MARKETS     GROWTH
                                                       PORTFOLIO       PORTFOLIO   PORTFOLIO
<S>                                                 <C>                <C>         <C>
SHAREHOLDER FEES
 (paid directly from your investment)
- --------------------------------------------------
Sales charge "load" on purchases                       NONE             NONE        NONE
- --------------------------------------------------
Deferred sales charge "load"                           NONE             NONE        NONE
- --------------------------------------------------
Sales charge "load" on reinvested distributions           NONE            NONE      NONE
- --------------------------------------------------
Redemption fees                                           NONE            NONE      NONE
- --------------------------------------------------
Exchange fees                                             NONE            NONE      NONE
- --------------------------------------------------
ANNUAL PORTFOLIO OPERATING EXPENSES
 (deducted from fund assets)
- --------------------------------------------------
Management fee                                            .80%           1.00%       1.10%
- --------------------------------------------------
Distribution and service (12b-1) fee                      NONE            NONE        NONE
- --------------------------------------------------
Other expenses                                            .28%            .41%       4.67%
- --------------------------------------------------
TOTAL ANNUAL PORTFOLIO OPERATING EXPENSES*               1.08%           1.41%       5.77%
</TABLE>
 
* Actual fees and expenses for the fiscal year ended October 31, 1998 are shown
  below. Fee waivers and expense reimbursements or credits reduced expenses for
  some portfolios during 1998 but may be discontinued at any time.
 
<TABLE>
<CAPTION>
                  EXPENSES AFTER                     INTERNATIONAL     EMERGING      JAPAN
                   WAIVERS AND                           EQUITY         MARKETS     GROWTH
                  REIMBURSEMENTS                       PORTFOLIO       PORTFOLIO   PORTFOLIO
<S>                                                 <C>                <C>         <C>
Management fee                                            .67%            .96%        .30%
Distribution and service (12b-1) fee                      NONE            NONE        NONE
Other expenses                                            .28%            .29%        .95%
TOTAL ANNUAL PORTFOLIO OPERATING EXPENSES                 .95%           1.25%       1.25%
</TABLE>
 
                                       10
 
                               INVESTOR EXPENSES
<PAGE>   12
 
                                    EXAMPLE
 
This example may help you compare the cost of investing in these portfolios with
the cost of investing in other mutual funds. Because it uses hypothetical
conditions, your actual costs may be higher or lower.
 
Assume you invest $10,000, each portfolio returns 5% annually, expense ratios
remain as listed in the first table on the opposite page (before fee waivers and
expense reimbursements and credits), and you close your account at the end of
each of the time periods shown. Based on these assumptions, your cost would be:
 
<TABLE>
<CAPTION>
                                         ONE YEAR     THREE YEARS     FIVE YEARS      10 YEARS
<S>                                    <C>            <C>            <C>            <C>
INTERNATIONAL EQUITY PORTFOLIO             $110            $343           $595         $1,317
- -------------------------------------
EMERGING MARKETS PORTFOLIO                 $144            $446           $771         $1,691
- -------------------------------------
JAPAN GROWTH PORTFOLIO                     $575          $1,711         $2,830         $5,553
</TABLE>
 
                                       11
<PAGE>   13
                            THE PORTFOLIOS IN DETAIL
 
     THE MANAGEMENT FIRM
 
WARBURG PINCUS ASSET MANAGEMENT, INC.
466 Lexington Avenue
New York, NY 10017-3147
 
 - Investment adviser for the portfolios
 
 - Responsible for managing each portfolio's assets according to its goal and
  strategies
 
 - A professional investment-advisory firm providing investment services to
  individuals since 1970 and to institutions since 1973
 
 - Currently manages approximately $22 billion in assets
 
   For easier reading, Warburg Pincus Asset Management Inc. will be referred to
as "Warburg Pincus" or "we" throughout this Prospectus.
 
                                       12
 
<PAGE>   14
 
     PORTFOLIO INFORMATION KEY
 
   Concise descriptions of each portfolio begin on the next page. Each
description provides the following information:
 
GOAL AND STRATEGIES
   The portfolio's particular investment goal and the strategies it intends to
use in pursuing that goal. Percentages of portfolio assets are based on total
assets unless indicated otherwise.
 
PORTFOLIO INVESTMENTS
   The primary types of securities in which the fund invests. Secondary
investments are described in "More About Risk."
 
RISK FACTORS
   The major risk factors associated with the portfolio. Additional risk factors
are included in "More About Risk."
 
PORTFOLIO MANAGEMENT
   The individuals designated by the investment adviser to handle the
portfolio's day-to-day management.
 
INVESTOR EXPENSES
   Actual portfolio expenses for the 1998 fiscal year. Future expenses may be
higher or lower.
 
 - MANAGEMENT FEE The fee paid to the investment adviser for providing
  investment advice to the portfolio. Expressed as a percentage of average net
  assets after waivers.
 
 - OTHER EXPENSES Fees paid by the portfolio for items such as administration,
  transfer agency, custody, auditing, legal and registration fees and
  miscellaneous expenses. Expressed as a percentage of average net assets after
  waivers, credits and reimbursements.
 
FINANCIAL HIGHLIGHTS
   A table showing the portfolio's audited financial performance for up to five
years.
 
 - TOTAL RETURN How much you would have earned on an investment in the
  portfolio, assuming you had reinvested all dividend and capital-gain
  distributions.
 
 - PORTFOLIO TURNOVER An indication of trading frequency. The portfolios may
  sell securities without regard to the length of time they have been held. A
  high turnover rate may increase the portfolio's transaction costs and
  negatively affect its performance. Portfolio turnover may also result in
  capital-gain distributions that could raise your income-tax liability.
 
   The Annual Report includes the auditor's report, along with the portfolio's
financial statements. It is available free upon request.
 
                                       13
<PAGE>   15
                         INTERNATIONAL EQUITY PORTFOLIO
 
     GOAL AND STRATEGIES
 
   The International Equity Portfolio seeks long-term capital appreciation. To
pursue this goal, it invests in equity securities of companies located or
conducting a majority of their business outside the U.S.
 
   Under normal market conditions, the portfolio will invest at least 65% of
assets in equity securities of issuers from at least three foreign countries.
The portfolio intends to diversify its investments across different countries,
although at times it may invest a significant part of its assets in a single
country. Although the portfolio emphasizes developed countries, it may also
invest in emerging markets.
 
   In choosing equity securities, the portfolio's managers use a bottom-up
investment approach that begins with an analysis of individual companies. The
managers look for companies of any size whose stocks appear to be discounted
relative to earnings, assets or projected growth. The portfolio managers
determine value based upon research and analysis, taking all relevant factors
into account.
 
     PORTFOLIO INVESTMENTS
 
   This portfolio intends to invest substantially all of its assets in the
following types of equity securities:
 
 - common stocks
 
 - securities convertible into or exchangeable for common stocks
 
   To a limited extent, the portfolio may also engage in other investment
practices.
 
     RISK FACTORS
 
   This portfolio's principal risk factors are:
 
 - market risk
 
 - foreign securities
 
   The value of your investment will fluctuate in response to stock-market
movements. Because the portfolio invests internationally, it carries additional
risks, including currency, information and political risks. These risks are
defined in "More About Risk."
 
   To the extent that the portfolio invests in emerging markets or focuses on a
single country or region, it takes on additional risks that could hurt its
performance. Investing in emerging markets involves access, operational and
other risks not generally encountered in developed countries. Focusing on a
single country or region may cause the portfolio to be more volatile than a more
geographically diversified equity fund. "More About Risk" details these and
certain other investment practices the portfolio may use. Please read that
section carefully before you invest.
 
                                       14
 
<PAGE>   16
 
     PORTFOLIO MANAGEMENT
 
   P. Nicholas Edwards, Harold W. Ehrlich, Richard H. King, Vincent J. McBride
and Harold E. Sharon manage the portfolio. You can find out more about them in
"Meet the Managers."
 
     INVESTOR EXPENSES
 
   Management fee                                                        .67%
   All other expenses                                                    .28%
     Total expenses                                                      .95%
 
                              FINANCIAL HIGHLIGHTS
 
The figures below have been audited by the portfolio's independent auditors,
PricewaterhouseCoopers LLP.
 
<TABLE>
<CAPTION>
        PERIOD ENDED:             10/98         10/97         10/96         10/95         10/94
<S>                             <C>           <C>           <C>           <C>           <C>
PER-SHARE DATA
- ----------------------------------------------------------------------
Net asset value, beginning of
period                              $16.51        $16.14        $15.10        $16.34        $13.49
- ----------------------------------------------------------------------
Investment activities:
Net investment income                 0.21          0.20          0.26          0.15          0.17
Net gains or losses on
investments
and foreign currency related
items
(both realized and unrealized)       (0.91)         0.78          1.28         (0.64)         2.87
- ----------------------------------------------------------------------
 Total from investment
 activities                          (0.70)         0.98          1.54         (0.49)         3.04
- ----------------------------------------------------------------------
Distributions:
From net investment income           (0.18)        (0.13)        (0.50)        (0.18)        (0.07)
Distributions from realized
 gains                               (1.22)        (0.48)         0.00         (0.57)        (0.12)
- ----------------------------------------------------------------------
 Total distributions                 (1.40)        (0.61)        (0.50)        (0.75)        (0.19)
- ----------------------------------------------------------------------
Net asset value, end of period      $14.41        $16.51        $16.14        $15.10        $16.34
- ----------------------------------------------------------------------
Total return                         (4.11%)        6.20%        10.48%        (2.83%)       22.62%
- ----------------------------------------------------------------------
RATIOS AND SUPPLEMENTAL DATA
- ----------------------------------------------------------------------
Net assets, end of period
(000s omitted)                  $1,019,242    $1,169,817      $937,443      $507,759      $331,297
Ratio of expenses to average
net assets                             .95%*         .95%*         .96%*         .95%          .95%
Ratio of net income to average
net assets                            1.21%          .98%         1.05%         1.20%          .59%
Decrease reflected in above
operating expense ratios due
to waivers/reimbursement               .13%          .14%          .18%          .23%          .29%
Portfolio turnover rate             113.58%        69.99%        29.91%        39.70%        19.34%
</TABLE>
 
* Interest earned on uninvested cash balances is used to offset portions of the
  transfer agent expense. These arrangements resulted in a reduction to the
  portfolio's expenses by .00%, .00% and .01%, for the years ending October 31,
  1998, 1997 and 1996, respectively. The portfolio's operating expense ratio
  after reflecting these arrangements were .95%, .95% and .95% for the years
  ended October 31, 1998, 1997 and 1996, respectively.
 
                                       15
<PAGE>   17
                           EMERGING MARKETS PORTFOLIO

     GOAL AND STRATEGIES
 
   The Emerging Markets Portfolio seeks growth of capital. To pursue this goal,
it invests in equity securities of companies located in or conducting a majority
of their business in emerging markets.
 
   An emerging market is any country:
 
 - generally considered to be an emerging or developing country by the United
  Nations, or by the World Bank and the International Finance Corporation (IFC),
  or
 
 - included in the IFC Investable Index or the Morgan Stanley Capital
  International Emerging Markets Index, or
 
 - having a per-capita gross national product of $2,000 or less
 
   Under this definition, most countries of the world (other than the U.S.,
Canada, Western Europe, Japan, Australia and New Zealand) are considered
emerging markets.
 
   Under normal market conditions, the portfolio will invest at least 65% of
assets in equity securities of issuers from at least three emerging markets. The
portfolio may invest in companies of any size, including emerging-growth
companies--small or medium-size companies that have passed their start-up phase,
show positive earnings, and offer the potential for accelerated earnings growth.
 
   Its non-diversified status allows the portfolio to invest a greater share of
its assets in the securities of fewer companies. However, the portfolio managers
typically have diversified the portfolio's investments.
 
     PORTFOLIO INVESTMENTS
 
   This portfolio invests primarily in equity securities of emerging-markets
issuers. Equity holdings may consist of:
 
 - common and preferred stocks
 
 - debt securities convertible into common or preferred stock
 
 - rights and warrants
 
 - equity interests in trusts and partnerships
 
 - depositary receipts
 
   To a limited extent, the portfolio may also engage in other investment
practices.
 
     RISK FACTORS
 
   This portfolio's principal risk factors are:
 
 - market risk
 
 - foreign securities
 
 - emerging-markets focus
 
 - non-diversified status
 
   The value of your investment will fluctuate in response to stock-market
movements. Because the portfolio invests internationally, it carries additional
risks, including currency, information and political risks. These risks are
defined in "More About Risk."
                                       16
<PAGE>   18
 
   Because the portfolio focuses on emerging markets, you should expect it to be
riskier than a more broadly diversified international equity fund. Investing in
emerging markets involves access, operational and other risks not generally
encountered in developed countries. In addition, emerging markets often face
serious economic problems that could subject the portfolio to increased
volatility or substantial declines in value.
 
   Non-diversification might cause the portfolio to be more volatile than a
diversified portfolio. "More About Risk" details certain other investment
practices the portfolio may use. Please read that section carefully before you
invest.
 
     PORTFOLIO MANAGEMENT
 
   Richard H. King and Vincent J. McBride are Co-Portfolio Managers of the
portfolio. Associate Portfolio Managers Morid Kamshad, Jun Sung Kim and
Frederico D. Laffan assist them. You can find out more about the portfolio's
managers in "Meet the Managers."
 
     INVESTOR EXPENSES
 
<TABLE>
<S>                                                            <C>
   Management fee                                                        .96%
   All other expenses                                                    .29%
                                                                 ------------
     Total expenses                                                     1.25%
</TABLE>
 
                                       17
<PAGE>   19
 
                              FINANCIAL HIGHLIGHTS
 
The figures below have been audited by the portfolio's independent auditors,
PricewaterhouseCoopers LLP.
 
<TABLE>
<CAPTION>
                   PERIOD ENDED:                       10/98        10/97       10/96(1)
<S>                                                   <C>          <C>          <C>
PER-SHARE DATA
- -----------------------------------------------------------------------------------------
Net asset value, beginning of period                    $9.36        $9.86        $10.00
- -----------------------------------------------------------------------------------------
Investment activities:
Net investment income                                    0.11(2)      0.10          0.01
Net gains or losses on investments and foreign
currency related items (both realized and
unrealized)                                             (2.99)       (0.53)        (0.15)
- -----------------------------------------------------------------------------------------
  Total from investment activities                      (2.88)       (0.43)        (0.14)
- -----------------------------------------------------------------------------------------
Distributions:
From net investment income                              (0.01)       (0.02)         0.00
From realized capital gains                             (0.75)       (0.05)         0.00
- -----------------------------------------------------------------------------------------
  Total distributions                                   (0.76)       (0.07)         0.00
- -----------------------------------------------------------------------------------------
Net asset value, end of period                          $5.72        $9.36         $9.86
- -----------------------------------------------------------------------------------------
Total return                                           (32.90%)      (4.43%)       (1.40%)(4)
- -----------------------------------------------------------------------------------------
RATIOS AND SUPPLEMENTAL DATA
- -----------------------------------------------------------------------------------------
Net assets, end of period (000s omitted)              $23,427      $37,281        $29,698
Ratio of expenses to average net assets                  1.25%(3)     1.25%(3)      1.25%(5,3)
Ratio of net income to average net assets                1.54%         .92%         1.75%(5)
Decrease reflected in above operating expense ratios
  due to waivers/reimbursements                           .16%         .40%         2.18%(5)
Portfolio turnover rate                                152.57%      107.21%         2.39%(4)
</TABLE>
 
(1) For the period September 30, 1996 (Commencement of Operations) through
    October 31, 1996.
(2) Per share information is calculated using the average share outstanding
    method.
(3) Interest earned on uninvested cash balances is used to offset portions of
    the transfer agent expense. These arrangements had no effect on the
    portfolio's expense ratio.
(4) Not annualized.
(5) Annualized.
 
                                       18
<PAGE>   20
 
                       This page intentionally left blank
 
                                       19
<PAGE>   21
                             JAPAN GROWTH PORTFOLIO

     GOAL AND STRATEGIES
 
   The Japan Growth Portfolio seeks long-term growth of capital. To pursue this
goal, it invests in equity securities of growth companies located in or
conducting a majority of their business in Japan.
 
   Warburg Pincus believes that Japanese industry is in an important period of
deregulation and restructuring. By investing in growth companies positioned to
benefit from the dynamic structural changes taking place in the Japanese
industrial system, the portfolio intends to provide investors with an
opportunity to participate in these developments.
 
   In choosing equity securities, the portfolio's manager seeks to identify
Japanese companies with attractive growth potential. The manager also looks for
companies whose equity securities appear undervalued based on factors such as
earnings or assets. The portfolio may invest in companies of any size, whether
traded on an exchange or over-the-counter.
 
   Under normal market conditions, the portfolio will invest at least 65% of
assets in equity securities of Japanese issuers. The remaining portion may be
invested in securities of other Asian issuers. Except for temporary defensive
purposes, the portfolio does not intend to invest in securities of non-Asian
issuers.
     PORTFOLIO INVESTMENTS
 
   This portfolio currently intends to invest at least 80% of assets in equity
securities of Japanese issuers. Equity holdings may consist of:
 
 - common and preferred stocks
 
 - rights and warrants
 
 - securities convertible into or exchangeable for common stocks
 
 - American Depositary Receipts ("ADRs")
 
   To a limited extent, the portfolio may also engage in other investment
practices.
     RISK FACTORS
 
   This portfolio's principal risk factors are:
 
 - market risk
 
 - foreign securities
 
 - country focus
 
 - non-diversified status
 
   The value of your investment will fluctuate in response to the Japanese stock
market. Because the portfolio invests internationally, it carries additional
risks, including currency, information and political risks. These risks are
defined in "More About Risk."
 
   Targeting a single country could hurt the portfolio's performance or may
cause the portfolio to be more volatile than a more geographically diversified
equity portfolio. Portfolio performance is closely tied to economic and
political conditions within Japan. In addition, non-diversification might cause
the portfolio to be more volatile than a diversified mutual fund.
 
   To the extent that the portfolio invests in smaller companies or
special-situation companies, it takes on further risks that could hurt its
performance. "More About Risk" details these and certain other investment
practices the portfolio may
                                       20
<PAGE>   22
 
use. Please read that section carefully
before you invest.
     PORTFOLIO MANAGEMENT
 
   P. Nicholas Edwards manages the portfolio. You can find out more about him in
"Meet the Managers."
 
     INVESTOR EXPENSES
 
   Management fee                                                        .30%
   All other expenses                                                    .95%
 
     Total expenses                                                     1.25%
 
                              FINANCIAL HIGHLIGHTS
 
The figures below have been audited by the portfolio's independent auditors,
PricewaterhouseCoopers LLP.
 
<TABLE>
<CAPTION>
                       PERIOD ENDED:                            10/98
<S>                                                            <C>
PER-SHARE DATA
- -----------------------------------------------------------------------
Net asset value, beginning of period                             $10.00
- -----------------------------------------------------------------------
Investment activities:
Net investment income                                              0.07
Net gains or losses on investments and foreign currency
related items (both realized and unrealized)                      (0.85)
- -----------------------------------------------------------------------
  Total from investment activities                                (0.78)
- -----------------------------------------------------------------------
Distributions:
From net investment income                                        (0.09)
- -----------------------------------------------------------------------
  Total distributions                                             (0.09)
- -----------------------------------------------------------------------
Net asset value, end of period                                    $9.13
- -----------------------------------------------------------------------
Total return                                                      (7.84%)
- -----------------------------------------------------------------------
RATIOS AND SUPPLEMENTAL DATA
- -----------------------------------------------------------------------
Net assets, end of period (000s omitted)                         $1,476
Ratio of expenses to average net assets                            1.25%*
Ratio of net income to average net assets                          0.39%
Decrease reflected in above operating expense ratios due to
  waivers/reimbursements                                           4.52%
Portfolio turnover rate                                           39.88%
</TABLE>
 
* Interest earned on uninvested cash balances is used to offset portions of the
  transfer agent expense. These arrangements had no effect on the portfolio's
  expense ratio.
                                       21
<PAGE>   23
                                MORE ABOUT RISK 
     INTRODUCTION
 
   A portfolio's goal and principal strategies largely determine its risk
profile. You will find a concise description of each portfolio's risk profile in
"Key Points." The preceding discussions of each portfolio contain more detailed
information. This section discusses other risks that may affect the portfolios.
 
   The "Certain Investment Practices" table in this section takes a more
detailed look at certain investment practices the portfolios may use. Some of
these practices may have higher risks associated with them. However, each
portfolio has limitations and policies designed to reduce many of the risks.
 
     TYPES OF INVESTMENT RISK
 
   The following risks are referred to throughout this prospectus.
 
   ACCESS RISK Some countries may restrict a portfolio's access to investments
or offer terms that are less advantageous than those for local investors. This
could limit the attractive investment opportunities available to a portfolio.
 
   CORRELATION RISK The risk that changes in the value of a hedging instrument
will not match those of the investment being hedged.
 
   CREDIT RISK The issuer of a security or the counterparty to a contract may
default or otherwise become unable to honor a financial obligation.
 
   CURRENCY RISK Fluctuations in exchange rates between the U.S. dollar and
foreign currencies may negatively affect an investment. Adverse changes in
exchange rates may erode or reverse any gains produced by foreign-currency-
denominated investments and may widen any losses.
 
   EURO CONVERSION The introduction of a new single European currency, the euro,
may result in uncertainties for securities of European companies, European
markets and the operation of the portfolios. The euro was introduced on January
1, 1999, by 11 European Union member countries who are participating in European
Monetary Union (EMU).
 
   The introduction of the euro results in the redenomination of certain
European debt and equity securities over a period of time, which may bring
differences in various accounting, tax and/or legal treatments that would not
otherwise occur. Any market disruptions relating to the introduction of the euro
could adversely affect the value of European securities and currencies held by
the portfolios. Other risks relate to the ability of financial institutions'
systems to process euro transactions. Additional economic and operational issues
are raised by the fact that certain European Union member countries, including
the United Kingdom, did not participate in EMU on January 1, 1999, and therefore
did not implement the euro on that date.
 
   At this early stage no one knows what the degree of impact of the
introduction of the euro will be. To the extent that the market impact or effect
on a portfolio
 
                                       22
 

<PAGE>   24
 
holding is negative or portfolio service-provider systems cannot process the
euro conversion, the portfolio's performance could be hurt.
 
   EXPOSURE RISK The risk associated with investments (such as derivatives) or
practices (such as short selling) that increase the amount of money a portfolio
could gain or lose on an investment.
 
    - HEDGED Exposure risk could multiply losses generated by a derivative or
     practice used for hedging purposes. Such losses should be substantially
     offset by gains on the hedged investment. However, while hedging can reduce
     or eliminate losses, it can also reduce or eliminate gains.
 
    - SPECULATIVE To the extent that a derivative or practice is not used as a
     hedge, the portfolio is directly exposed to its risks. Gains or losses from
     speculative positions in a derivative may be much greater than the
     derivative's original cost. For example, potential losses from writing
     uncovered call options and from speculative short sales are unlimited.
 
   INFORMATION RISK Key information about an issuer, security or market may be
inaccurate or unavailable.
 
   INTEREST-RATE RISK Changes in interest rates may cause a decline in the
market value of an investment. With bonds and other fixed-income securities, a
rise in interest rates typically causes a fall in values, while a fall in
interest rates typically causes a rise in values.
 
   LIQUIDITY RISK Certain portfolio securities may be difficult or impossible to
sell at the time and the price that the portfolio would like. A portfolio may
have to lower the price, sell other securities instead or forego an investment
opportunity. Any of these could have a negative effect on portfolio management
or performance.
 
   MARKET RISK The market value of a security may move up and down, sometimes
rapidly and unpredictably. These fluctuations, which are often referred to as
"volatility," may cause a security to be worth less than it was worth at an
earlier time. Market risk may affect a single issuer, industry, sector of the
economy, or the market as a whole. Market risk is common to most
investments--including stocks and bonds, and the mutual funds that invest in
them.
 
   OPERATIONAL RISK Some countries have less-developed securities markets (and
related transaction, registration and custody practices) that could subject a
portfolio to losses from fraud, negligence, delay or other actions.
 
   POLITICAL RISK Foreign governments may expropriate assets, impose capital or
currency controls, impose punitive taxes, or nationalize a company or industry.
Any of these actions could have a severe effect on security prices and impair a
portfolio's ability to bring its capital or income back to the U.S. Other
political risks include economic policy changes, social and political
instability, military action and war.
 
   VALUATION RISK The lack of an active trading market may make it difficult
                                       23
<PAGE>   25
 
to obtain an accurate price for a portfolio security.
 
   YEAR 2000 PROCESSING RISK The portfolios' investment adviser is working to
address the Year 2000 issue relating to the change from "99" to "00" on January
1, 2000, and has obtained assurances from major service providers that they are
taking similar steps. The adviser is working on the Year 2000 issue pursuant to
a plan designed to address potential problems, and progress is proceeding
according to the plan. The adviser anticipates the completion of testing of
internal systems in the first part of 1999, and is developing contingency plans
intended to address any unexpected service problems.
 
   The portfolios' operations are dependent upon interactions among many
participants in the financial-services and other related industries. There is no
assurance that preparations by the adviser and other industry participants will
be sufficient, and any noncompliant computer systems could hurt key portfolio
operations, such as shareholder servicing, pricing and trading.
 
   The Year 2000 issue affects practically all companies, organizations,
governments, markets and economies throughout the world -- including companies
or governmental entities in which the portfolios invest and markets in which
they trade. However, at this time no one knows precisely what the degree of
impact will be. To the extent that the impact on a portfolio holding or on
markets or economies is negative, it could seriously affect the portfolio's
performance.
                                       24
<PAGE>   26
 
                          CERTAIN INVESTMENT PRACTICES
 
For each of the following practices, this table shows the applicable investment
limitation. Risks are indicated for each practice.
 
KEY TO TABLE:
 
<TABLE>
<S>    <C>
[-]    Permitted without limitation; does not indicate actual
       use
20%    Italic type (e.g., 20%) represents an investment
       limitation as a percentage of NET portfolio assets; does
       not indicate actual use
20%    Roman type (e.g., 20%) represents an investment
       limitation as a percentage of TOTAL portfolio assets;
       does not indicate actual use
[ ]    Permitted, but not expected to be used to a significant
       extent
- --     Not permitted
</TABLE>
 
<TABLE>
<CAPTION>
                    INVESTMENT PRACTICE                               LIMIT
<S>                                                           <C>     <C>     <C>
BORROWING The borrowing of money from banks to meet
redemptions or for other temporary or emergency purposes.
Speculative exposure risk.                                     30%     30%     30%
- ------------------------------------------------------------------------------------
COUNTRY/REGION FOCUS Investing a significant portion of
portfolio assets in a single country or region. Market
swings in the targeted country or region will be likely to
have a greater effect on portfolio performance than they
would in a more geographically diversified equity portfolio.
Currency, market, political risks.                             [-]     [-]     [-]
- ------------------------------------------------------------------------------------
CURRENCY HEDGING Instruments, such as options, futures,
forwards or swaps, intended to manage portfolio exposure to
currency risk. Options, futures or forwards involve the
right or obligation to buy or sell a given amount of foreign
currency at a specified price and future date. Swaps involve
the right or obligation to receive or make payments based on
two different currency rates. Correlation, credit, currency,
hedged exposure, liquidity, political, valuation risks.(1)     [-]     [-]     [-]
- ------------------------------------------------------------------------------------
EMERGING MARKETS Countries generally considered to be
relatively less developed or industrialized. Emerging
markets often face economic problems that could subject a
portfolio to increased volatility or substantial declines in
value. Deficiencies in regulatory oversight, market
infrastructure, shareholder protections and company laws
could expose a portfolio to risks beyond those generally
encountered in developed countries. Access, currency,
information, liquidity, market, operational, political,
valuation risks.                                               [-]     [-]      --
- ------------------------------------------------------------------------------------
EQUITY SWAPS A contract between a portfolio and another
party in which the parties agree to exchange streams of
payments based on certain benchmarks. For example, a
portfolio may use equity swaps to gain access to the
performance of a benchmark asset (such as an index or one or
more stocks) where the portfolio's direct investment is
restricted. Credit, currency, interest-rate, liquidity,
market, political, speculative exposure, valuation risks.      [ ]     [ ]     [ ]
- ------------------------------------------------------------------------------------
FUTURES AND OPTIONS ON FUTURES Exchange-traded contracts
that enable a portfolio to hedge against or speculate on
future changes in currency values, interest rates or stock
indexes. Futures obligate the portfolio (or give it the
right, in the case of options) to receive or make payment at
a specific future time based on those future changes.(1)
Correlation, currency, hedged exposure, interest-rate,
market, speculative exposure risks.(2)                         [ ]     [ ]     [ ]
- ------------------------------------------------------------------------------------
</TABLE>
 
                                       25
 
                                                                       gray bars
<PAGE>   27
 
<TABLE>
<S>                                                           <C>     <C>     <C>
 INVESTMENT PRACTICE                                                  LIMIT
NON-INVESTMENT-GRADE DEBT SECURITIES Debt securities and
convertible securities rated below the fourth-highest grade
(BBB/Baa) by Standard & Poor's or Moody's rating service,
and unrated securities of comparable quality. Commonly
referred to as junk bonds. Credit, information,
interest-rate, liquidity, market, valuation risks.             [ ]     35%     [ ]
- ------------------------------------------------------------------------------------
OPTIONS Instruments that provide a right to buy (call), a
particular security, currency or an index of securities at a
fixed price within a certain time period. A portfolio may
purchase or sell (write) both put and call options for
hedging or speculative purposes.(1) Correlation, credit,
hedged exposure, liquidity, market, speculative exposure,
valuation risks.                                               25%     25%     25%
- ------------------------------------------------------------------------------------
PRIVATIZATION PROGRAMS Foreign governments may sell all or
part of their interests in enterprises they own or control.
Access, currency, information, liquidity, operational,
political, valuation risks.                                    [-]     [-]     [ ]
- ------------------------------------------------------------------------------------
RESTRICTED AND OTHER ILLIQUID SECURITIES Securities with
restrictions on trading, or those not actively traded. May
include private placements. Liquidity, market, valuation
risks.                                                         10%     15%     10%
- ------------------------------------------------------------------------------------
SECURITIES LENDING Lending portfolio securities to financial
institutions; a portfolio receives cash, U.S. government
securities or bank letters of credit as collateral. Credit,
liquidity, market, operational risks.                         33 1/3% 33 1/3% 33 1/3%
- ------------------------------------------------------------------------------------
SHORT SALES "AGAINST THE BOX" A short sale when the
portfolio owns enough shares of the security involved to
cover the borrowed securities, if necessary. Liquidity,
market, speculative exposure risks.                            [ ]     [ ]     [ ]
- ------------------------------------------------------------------------------------
</TABLE>
 
                                       26
 
                                                                       gray bars
<PAGE>   28
 
<TABLE>
<S>                                                           <C>     <C>     <C>
 INVESTMENT PRACTICE                                                  LIMIT
TEMPORARY DEFENSIVE TACTICS Placing some or all of a
portfolio's assets in investments such as money-market
obligations and investment-grade debt securities for
defensive purposes. Although intended to avoid losses in
adverse market, economic, political or other conditions,
defensive tactics might be inconsistent with a portfolio's
principal investment strategies and might prevent a
portfolio from achieving its goal.                             [ ]     [ ]     [ ]
- ------------------------------------------------------------------------------------
WARRANTS Options issued by a company granting the holder the
right to buy certain securities, generally common stock, at
a specified price and usually for a limited time. Liquidity,
market, speculative exposure risks.                            10%     10%     10%
- ------------------------------------------------------------------------------------
WHEN-ISSUED SECURITIES AND FORWARD COMMITMENTS The purchase
or sale of securities for delivery at a future date; market
value may change before delivery. Liquidity, market,
speculative exposure risks.                                    20%     20%     20%
- ------------------------------------------------------------------------------------
</TABLE>
 
(1) The portfolios are not obligated to pursue any hedging strategy. In
    addition, hedging practices may not be available, may be too costly to be
    used effectively or may be unable to be used for other reasons.
(2) Each portfolio is limited to 5% of net assets for initial margin and premium
    amounts on futures positions considered to be speculative by the Commodity
    Futures Trading Commission.
 
                                       27
 
                                                                       gray bars
<PAGE>   29
 
                                [Edwards PHOTO]
                              P. NICHOLAS EDWARDS
                               Managing Director
 
 - Co-Portfolio Manager,
   International Equity Portfolio
   since April 1998
 
 - Portfolio Manager,
   Japan Growth Portfolio
   since inception
 
 - With Warburg Pincus since 1995
 
 - Previously director at Jardine Fleming Investment Advisers, Tokyo, 1984 to
  1995                            [KING PHOTO]
                                RICHARD H. KING
                               Managing Director
 
 - Co-Portfolio Manager,
   International Equity Portfolio
   since inception
 
 - Co-Portfolio Manager,
   Emerging Markets Portfolio
   since inception
 
 - With Warburg Pincus since 1989
 
                                 [ERLICH PHOTO]
                          HAROLD W. EHRLICH, CFA, CIC
                               Managing Director
 
 - Co-Portfolio Manager,
   International Equity Portfolio
   since April 1998
 
 - With Warburg Pincus since 1995
 
 - Previously senior vice president,
   portfolio manager and analyst at Templeton Investment Counsel Inc., 1987 to
   1995                          [SHARON PHOTO]
                                HAROLD E. SHARON
                               Managing Director
 
 - Co-Portfolio Manager, International Equity Portfolio since December 1998
 
 - With Warburg Pincus since March 1998
 
 - Executive director and portfolio manager with CIBC Oppenheimer, 1994 to 1998
 
 - Warburg Pincus Senior Vice President and portfolio manager, 1990 to 1994
 
                                       28
 
                               MEET THE MANAGERS
 
           Job titles indicate position with the investment adviser.
<PAGE>   30
 
                                [MCBRIDE PHOTO]
                               VINCENT J. MCBRIDE
                             Senior Vice President
 
 - Co-Portfolio Manager,
   International Equity Portfolio
   since April 1998
 
 - Co-Portfolio Manager,
   Emerging Markets Portfolio
   since 1997
 
 - With Warburg Pincus since 1994
 
 - Previously international equity analyst with Smith Barney Inc., 1993 to 1994
                                [KAMSHAD PHOTO]
                                 MORID KAMSHAD
                                 Vice President
 
 - Associate Portfolio Manager, Emerging Markets Portfolio since April 1998
 
 - With Warburg Pincus since 1997
 
 - Senior investment manager with Pictet Asset Management, 1995 to 1997
 
 - Investment analyst with HSBC Asset Management, 1994 to 1995
 
 - Business development manager with Air Products and Chemicals-France, 1989 to
  1994
 
                                  JUN SUNG KIM
                                 Vice President
 
 - Associate Portfolio Manager, Emerging Markets Portfolio since April 1998
 
 - With Warburg Pincus since 1997
 
 - Investment manager with Asset Korea Ltd., Seoul, 1995 to 1997
 
 - Investment analyst with Baring Securities Ltd., Seoul, 1994 to 1995
 
 - Assistant investment manager with Koeneman Capital Management, Singapore,
  1992 to 1994
 
                                 [LAFFAN PHOTO]
                               FEDERICO D. LAFFAN
                                 Vice President
 
 - Associate Portfolio Manager, Emerging Markets Portfolio since April 1998
 
 - With Warburg Pincus since 1997
 
 - Senior manager and partner with Green Cay Asset Management, 1996 to 1997
 
 - Senior portfolio manager and director with Foreign & Colonial Emerging
  Markets, London, 1990 to 1996
                                       29
<PAGE>   31
                               ABOUT YOUR ACCOUNT
 
     SHARE VALUATION
 
   The price of your shares is also referred to as their net asset value (NAV).
 
   The NAV is determined at the close of regular trading on the New York Stock
Exchange (NYSE) (usually 4 p.m. Eastern Time) each day the NYSE is open for
business. It is calculated by dividing each portfolio's total assets, less its
liabilities, by the number of shares outstanding in each portfolio.
 
   Each portfolio values its securities based on market quotations when it
calculates its NAV. If market quotations are not readily available, securities
and other assets are valued by another method that the Board of Directors
believes accurately reflects fair value. Debt obligations that will mature in 60
days or less are valued on the basis of amortized cost, unless the Board
determines that using this method would not reflect an investment's value.
 
   Some portfolio securities may be listed on foreign exchanges that are open on
days (such as U.S. holidays) when the portfolios do not compute their prices.
This could cause the value of a portfolio's investments to be affected by
trading on days when you cannot buy or sell shares.
 
     ACCOUNT STATEMENTS
 
   In general, you will receive account statements as follows:
 
 - after every transaction that affects your account balance (except for
  distribution reinvestments and automatic transactions)
 
 - after any changes of name or address of the registered owner(s)
 
 - otherwise, every quarter
 
   You will receive annual and semiannual financial reports.
 
     DISTRIBUTIONS
 
   As an investor in a portfolio, you are entitled to your share of the
portfolio's net income and gains on its investments. The portfolio passes these
earnings along to its shareholders as distributions.
 
   Each portfolio earns dividends from stocks and interest from bond, money-
market and other investments. These are passed along as dividend distributions.
A portfolio realizes capital gains whenever it sells securities for a higher
price than it paid for them. These are passed along as capital-gain
distributions.
 
   The portfolios typically distribute dividends and capital gains annually,
usually in December.
 
   Most investors have their distributions reinvested in additional shares of
the same portfolio. Distributions will be reinvested unless you choose on your
account application to have a check for your distributions mailed to you or sent
by electronic transfer.
                                       30
 
<PAGE>   32
 
     TAXES
 
   As with any investment, you should consider how your investment in a
portfolio will be taxed. If your account is not a tax-advantaged retirement
account, you should be especially aware of the following tax implications.
Please consult your tax professional concerning your own tax situation.
 
TAXES ON DISTRIBUTIONS
   As long as a portfolio continues to meet the requirements for being a tax-
qualified regulated investment company, it pays no federal income tax on the
earnings it distributes to shareholders.
 
   Distributions you receive from a portfolio, whether reinvested or taken in
cash, are generally considered taxable. Portfolio distributions are taxed based
on the length of time the portfolio holds its assets, regardless of how long you
have held portfolio shares. Distributions from a portfolio's long-term capital
gains are taxed as capital gains; distributions from short-term capital gains
and other sources are generally taxed as ordinary income. The portfolios will
mostly make capital-gain distributions.
 
   If you buy shares shortly before or on the "record date"--the date that
establishes you as the person to receive the upcoming distribution--you may
receive a portion of the money you just invested in the form of a taxable
distribution.
 
   The Form 1099 that is mailed to you every January details your distributions
and their federal-tax category.
 
   TAXES ON TRANSACTIONS
      Any time you sell or exchange shares, it is considered
a taxable event for you. Depending on the purchase price and the sale price of
the shares you sell or exchange, you may have a gain or loss on the transaction.
You are responsible for any tax liabilities generated by your transactions.
 
                                       31
<PAGE>   33

                                 BUYING SHARES
 
     OPENING AN ACCOUNT
 
   Your account application provides us with key information we need to set up
your account correctly. It also lets you authorize services that you may find
convenient in the future.
 
   If you need an application, call our Institutional Shareholder Service Center
to receive one by mail or fax.
 
   You can make your initial investment by wire. The "By Wire" method in the
table enables you to buy shares on a particular day at that day's closing NAV.
 
     BUYING AND SELLING SHARES
 
   The Institutional Fund is open on those days when the NYSE is open, typically
Monday through Friday. If we receive your request in proper form by the close of
the NYSE (usually 4 p.m. ET), your transaction will be priced at that day's NAV.
If we receive it after that time, it will be priced at the next business day's
NAV.
 
                           MINIMUM INITIAL INVESTMENT
 
<TABLE>
<S>                                                                  <C>
International Equity
  Portfolio                                                           $3,000,000
 
Emerging Markets Portfolio                                            $2,000,000
 
Japan Growth Portfolio                                                $1,000,000
 
                         MINIMUM SUBSEQUENT INVESTMENT
 
International Equity Portfolio                                           $50,000
 
Emerging Markets Portfolio                                               $50,000
 
Japan Growth Portfolio                                                      NONE
</TABLE>
 
   The minimum initial investment for any group of related persons is an
aggregate $4,000,000. Certain retirement plans for which recordkeeping is
performed on an omnibus basis for multiple participants are not subject to
investment minimums.
 
FINANCIAL-SERVICES FIRMS
   You may be able to buy and sell fund shares through financial-services firms
such as banks, brokers and financial advisors. The portfolios may authorize
these firms (and other intermediaries that the firms may designate) to accept
orders. When an authorized firm or its designee has received your order, it is
considered received by the portfolio and will be priced at the next-computed
NAV.
 
   Financial-services firms may charge transaction fees or other fees that you
could avoid by investing directly with the portfolio. Please read the firm's
program materials for any special provisions or additional service features that
may apply to your investment. Certain features of the portfolio, such as the
minimum initial or subsequent investment amounts, may be modified.
 
     ADDING TO AN ACCOUNT
 
   You can add to your account in a variety of ways, as shown in the table.
 
                                       32
 
<PAGE>   34
 
<TABLE>
<CAPTION>
           OPENING AN ACCOUNT                            ADDING TO AN ACCOUNT
<S>                                            <C>
BY EXCHANGE
- ----------------------------------------------------------------------------------------
- - Call our Institutional Shareholder           - Call our Institutional Shareholder
  Service Center to request an exchange        Service Center to request an exchange
  from another Warburg Pincus fund or            from another Warburg Pincus fund or
  portfolio. Be sure to read the current         portfolio.
  Prospectus for the new fund or               If you do not have telephone privileges,
  portfolio.                                   mail or fax a letter of instruction.
If you do not have telephone privileges,
mail or fax a letter of instruction.
- ----------------------------------------------------------------------------------------
BY WIRE
- ----------------------------------------------------------------------------------------
- - Complete and sign the New Account            - Call our Institutional Shareholder
  Application.                                 Service Center by 4 p.m. ET to inform us
- - Call our Institutional Shareholder             of the incoming wire. Please be sure to
  Service Center and fax the signed New          specify the account registration,
  Account Application by 4 p.m. ET.              account number and the fund and
- - Institutional Shareholder Services will        portfolio name on your wire advice.
  telephone you with your account number.      - Wire the money for receipt that day.
  Please be sure to specify the account
  registration, account number and the
  fund and portfolio name on your wire
  advice.
- - Wire your initial investment for
receipt that day.
</TABLE>
 
                    INSTITUTIONAL SHAREHOLDER SERVICE CENTER
                                  800-222-8977
                      MONDAY - FRIDAY, 8 A.M. - 5 P.M. ET
                                       33
<PAGE>   35
 
<TABLE>
<CAPTION>
   SELLING SOME OR ALL OF YOUR SHARES                       CAN BE USED FOR
<S>                                            <C>
BY MAIL
- ----------------------------------------------------------------------------------------
 
Write us a letter of instruction that          - Sales of any amount.
includes:
- - your name(s) and signature(s)
- - the fund and portfolio name and account
  number
- - the dollar amount you want to sell
- - how to send the proceeds
Obtain a signature guarantee or other
documentation, if required (see "Selling
Shares
in Writing").
Mail the materials to Warburg Pincus
Institutional Fund, Inc.
If only a letter of instruction is
required, you can fax it to the
Institutional Shareholder Service Center
(unless signature guarantee is required).
- ----------------------------------------------------------------------------------------
BY EXCHANGE
- ----------------------------------------------------------------------------------------
- - Call our Institutional Shareholder           - Accounts with telephone privileges.
  Service Center to request an exchange        If you do not have telephone privileges,
into another Warburg Pincus fund or            mail or fax a letter of instruction to
portfolio. Be sure to read the current         exchange shares.
Prospectus for the new fund or portfolio.
- ----------------------------------------------------------------------------------------
BY PHONE
- ----------------------------------------------------------------------------------------
 
Call our Institutional Shareholder             - Accounts with telephone privileges.
Service Center to request a redemption.
You can receive the proceeds as:
- - a check mailed to the address of record
- - a wire to your bank
See "By Wire" for details.
- ----------------------------------------------------------------------------------------
BY WIRE
- ----------------------------------------------------------------------------------------
- - Complete the "Wire Instructions"             - Requests by phone or mail.
  section of your New Account
Application.
- - For federal-funds wires, proceeds will
  be wired on the next business day.
</TABLE>
 
                                       34
 
                                 SELLING SHARES
<PAGE>   36
 
                                HOW TO REACH US
 
  Institutional Shareholder Service Center
  Toll Free: 800-222-8977
  Fax: 212-310-9833
 
  Mail:
  Warburg Pincus Institutional
  Fund, Inc.
  P.O. Box 9030
  Boston, MA 02205-9030
 
  Overnight/Courier Service:
  Boston Financial
  Attn: Warburg Pincus Institutional Fund, Inc.
  2 Heritage Drive
  North Quincy, MA 02171
 
  Internet Web Site:
  www.warburg.com
 
                               WIRE INSTRUCTIONS
 
  State Street Bank and Trust Company
  ABA# 0110 000 28
  Attn: Mutual Funds/Custody Dept.
  Warburg Pincus Institutional
    Fund, Inc.
  [Institutional Fund Portfolio Name]
  DDA# 9904-649-2
  F/F/C: [Account Number and
  Registration]

     SELLING SHARES IN WRITING
 
   Some circumstances require a written sell order, along with a signature
guarantee. These include:
 
 - accounts whose address of record has been changed within the past 30 days
 
 - redemptions in certain large accounts (other than by exchange)
 
 - requests to send the proceeds to a different payee or address
 
 - shares represented by certificates, which must be returned with your sell
  order
 
   A signature guarantee helps protect against fraud. You can obtain one from
most banks or securities dealers, but not from a notary public.
 
     RECENTLY PURCHASED SHARES
 
   If the portfolio has not yet collected payment for the shares you are
selling, it will delay sending you the proceeds until your purchase payment
clears. This may take up to 10 calendar days after the purchase. To avoid the
collection period, consider buying shares by bank wire.
 
                    INSTITUTIONAL SHAREHOLDER SERVICE CENTER
                                  800-222-8977
                      MONDAY - FRIDAY, 8 A.M. - 5 P.M. ET
                                       35
<PAGE>   37
                                 OTHER POLICIES
 
     TRANSACTION DETAILS
 
   You are entitled to capital-gain and earned-dividend distributions as soon as
your purchase order is executed.
 
   Your purchase order will be canceled and you may be liable for losses or fees
incurred by a portfolio if:
 
 - your investment check does not clear
 
 - you place a telephone order by 4 p.m. ET and we do not receive your wire that
  day
 
   If you wire money without first calling our Institutional Shareholder Service
Center to place an order, and your wire arrives after the close of regular
trading on the NYSE, then your order will not be executed until the end of the
next business day. In the meantime, your payment will be held uninvested. Your
bank or other financial-services firm may charge a fee to send or receive wire
transfers.
 
   While we monitor telephone-servicing resources carefully, during periods of
significant economic or market change it may be difficult to place orders by
telephone.
 
   Uncashed redemption or distribution checks do not earn interest.
     ACCOUNT CHANGES
 
   Call our Institutional Shareholder Service Center to update your account
records whenever you change your address. Institutional Shareholder Services can
also help you change your account information or privileges.
     SPECIAL SITUATIONS
 
   The Institutional Fund reserves the right to:
 
 - refuse any purchase or exchange request, including those from any person or
  group who, in the fund's view, is likely to engage in excessive trading
 
 - change or discontinue its exchange privilege after 30 days' notice to current
  investors, or temporarily suspend this privilege during unusual market
  conditions
 
 - change minimum investment amounts after 15 days' notice to current investors
  of any increases
 
 - charge a wire-redemption fee
 
 - make a "redemption in kind"--payment in portfolio securities rather than
  cash--for certain large redemption amounts that could hurt portfolio
  operations
 
 - suspend redemptions or postpone payment dates as permitted by the Investment
  Company Act of 1940 (such as during periods other than weekends or holidays
  when the NYSE is closed or trading on the NYSE is restricted, or any other
  time that the SEC permits)
 
 - modify or waive its minimum investment requirements for employees and clients
  of its adviser and the adviser's affiliates
 
 - stop offering a portfolio's shares for a period of time (such as when
  management believes that a substantial increase in assets could adversely
  affect it)
 
                    INSTITUTIONAL SHAREHOLDER SERVICE CENTER
                                  800-222-8977
                      MONDAY - FRIDAY, 8 A.M. - 5 P.M. ET
                                       36
 
<PAGE>   38
 
                       This page intentionally left blank
 
                                       37
<PAGE>   39
 
                       This page intentionally left blank
 
                                       38
<PAGE>   40
 
   More information about these portfolios is available free upon request,
including the following:
 
     ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
 
   Includes financial statements, portfolio investments and detailed performance
information.
 
   The Annual Report also contains a letter from the portfolio manager
discussing market conditions and investment strategies that significantly
affected portfolio performance during its past fiscal year.
 
     OTHER INFORMATION
 
   A current Statement of Additional Information (SAI), which provides more
details about the portfolios, is on file with the Securities and Exchange
Commission (SEC) and is incorporated by reference.
 
   You may visit the SEC's Internet Web site (www.sec.gov) to view the SAI,
material incorporated by reference and other information. You can also obtain
copies by visiting the SEC's Public Reference Room in Washington, DC
 
(phone 800-SEC-0330) or by sending your request and a duplicating fee to the
SEC's Public Reference Section, Washington, DC 20549-6009.
 
   Please contact Warburg Pincus Institutional Fund, Inc. to obtain, without
charge, the SAI and Annual and Semiannual Reports and to make shareholder
inquiries:
 
BY TELEPHONE:
   800-222-8977
 
BY MAIL:
   Warburg Pincus Institutional Fund, Inc.
   P.O. Box 9030
   Boston, MA 02205-9030
 
BY OVERNIGHT OR COURIER SERVICE:
   Boston Financial
   Attn: Warburg Pincus Institutional Fund, Inc.
   2 Heritage Drive
   North Quincy, MA 02171
 
ON THE INTERNET:
   www.warburg.com
 
SEC FILE NUMBER:
 
Warburg Pincus Institutional
Fund, Inc.                                                              811-6670
 
                              FOR MORE INFORMATION
                          [WARBURG PINCUS FUNDS LOGO]
                      P.O. BOX 9030, BOSTON, MA 02205-9030
 
                         800-222-8977 - www.warburg.com
COUNSELLORS SECURITIES INC., DISTRIBUTOR.                          WPINI-1-0299A
<PAGE>   41
 
                                   PROSPECTUS
                               February 22, 1999
 
             WARBURG PINCUS INSTITUTIONAL FUND, INC.
 
                        -- VALUE PORTFOLIO
 
                        -- SMALL COMPANY VALUE PORTFOLIO
 
                        -- SMALL COMPANY GROWTH PORTFOLIO
 
                        -- POST-VENTURE CAPITAL PORTFOLIO
 
           As with all mutual funds, the Securities and Exchange
           Commission has not approved these portfolios, nor has it
           passed upon the adequacy or accuracy of this Prospectus.
           It is a criminal offense to state otherwise.
 
                             [Warburg Pincus Logo]
<PAGE>   42
                                    CONTENTS
 
<TABLE>
<S>                                                  <C>
KEY POINTS.................... ....................           4
   Goals and Principal Strategies..................           4
   Investor Profile................................           4
   A Word About Risk...............................           5
 
PERFORMANCE SUMMARY............... ................           6
   Year-by-Year Total Returns......................           6
   Average Annual Total Returns....................           7
 
INVESTOR EXPENSES................ .................          10
   Fees and Portfolio Expenses.....................          10
   Example.........................................          11
 
THE PORTFOLIOS IN DETAIL............. .............          12
   The Management Firms............................          12
   Portfolio Information Key.......................          13
 
VALUE PORTFOLIO................. ..................          14
 
SMALL COMPANY VALUE PORTFOLIO.......... ...........          16
 
SMALL COMPANY GROWTH PORTFOLIO.......... ..........          18
 
POST-VENTURE CAPITAL PORTFOLIO.......... ..........          20
 
MORE ABOUT RISK................. ..................          22
   Introduction....................................          22
   Types of Investment Risk........................          22
   Certain Investment Practices....................          25
 
MEET THE MANAGERS................ .................          28
 
ABOUT YOUR ACCOUNT................ ................          30
   Share Valuation.................................          30
   Account Statements..............................          30
   Distributions...................................          30
   Taxes...........................................          31
 
BUYING SHARES.................. ...................          32
 
SELLING SHARES.................. ..................          34
 
OTHER POLICIES.................. ..................          36
 
FOR MORE INFORMATION............... ...............  back cover
</TABLE>
 
                                        3
 
<PAGE>   43
                                   KEY POINTS
                         GOALS AND PRINCIPAL STRATEGIES
 
<TABLE>
<CAPTION>
PORTFOLIO/RISK FACTORS            GOAL                         STRATEGIES
<S>                     <C>                        <C>
VALUE PORTFOLIO         Total return               - Invests primarily in equity
Risk factors:                                        securities
 Market risk                                       - Focuses on large U.S. companies
                                                   - Analyzes such factors as
                                                     price-to-earnings and
                                                     price-to-book ratios, using a
                                                     value investment style
SMALL COMPANY VALUE     Long-term capital          - Invests in equity securities of
PORTFOLIO               appreciation                 small U.S. companies
Risk factors:                                      - Analyzes factors such as
 Market risk                                         price-to-earnings, price-to-book
 Start-up and other                                  and price-to-cash flow ratios,
 small companies                                     using a value investment style
 Special-situation
  companies
SMALL COMPANY GROWTH    Capital growth             - Invests in equity securities of
PORTFOLIO                                            small U.S. companies
Risk factors:                                      - Using a growth investment style,
 Market risk                                         may look for either developing or
 Start-up and other                                  older companies in a growth
 small companies                                     stage or companies providing
                                                     products or services with a high
 Special-situation                                   unit-volume growth rate
  companies
 Non-diversified
status
POST-VENTURE CAPITAL    Long-term growth of        - Invests primarily in equity
PORTFOLIO               capital                      securities of U.S. companies
Risk factors:                                        considered to be in their
 Market risk                                         post-venture-capital stage of
 Start-up and other                                  development
 small companies                                   - May invest in companies of any
                                                     size
 Special-situation                                 - Takes a growth investment
  companies                                          approach to identifying attractive
                                                     post-venture-capital investments
</TABLE>
 
     INVESTOR PROFILE
 
   THESE PORTFOLIOS ARE DESIGNED FOR INVESTORS WHO:
 
 - have longer time horizons
 
 - are willing to assume the risk of losing money in exchange for attractive
   potential long-term returns
 
 - are investing for total return, growth and income, or capital appreciation
 
 - want to diversify their portfolios with more aggressive stock funds
 
 - are investing for long-term goals
 
   THEY MAY NOT BE APPROPRIATE IF YOU:
 
 - are investing for a shorter time horizon
 
 - are uncomfortable with an investment that will fluctuate in value
 
 - are looking primarily for income
 
   You should base your selection of a portfolio on your own goals, risk
preferences and time horizon.
 
                                        4
 
<PAGE>   44
 
     A WORD ABOUT RISK
 
   All investments involve some level of risk. Simply defined, risk is the
possibility that you will lose money or not make money.
 
   Principal risk factors for the portfolios are discussed below. Before you
invest, please make sure you understand the risks that apply to your portfolio.
As with any mutual fund, you could lose money over any period of time.
 
   Investments in the portfolios are not bank deposits and are not insured or
guaranteed by the Federal Deposit Insurance Corporation or any other government
agency.
 
MARKET RISK
All portfolios
 
   The market value of a security may move up and down, sometimes rapidly and
unpredictably. These fluctuations, which are often referred to as "volatility,"
may cause a security to be worth less than it was worth at an earlier time.
Market risk may affect a single issuer, industry, sector of the economy, or the
market as a whole. Market risk is common to most investments--including stocks
and bonds, and the mutual funds that invest in them.
 
START-UP AND OTHER SMALL COMPANIES
Small Company Value Portfolio,
Small Company Growth Portfolio,
Post-Venture Capital Portfolio
 
   Start-up and other small companies may have less-experienced management,
limited product lines, unproven track records or inadequate capital reserves.
Their securities may carry increased market, liquidity and other risks. Key
information about the company may be inaccurate or unavailable.
 
SPECIAL-SITUATION COMPANIES
Small Company Value Portfolio,
Small Company Growth Portfolio,
Post-Venture Capital Portfolio
 
   "Special situations" are unusual developments that affect a company's market
value. Examples include mergers, acquisitions and reorganizations. Securities of
special-situation companies may decline in value if the anticipated benefits of
the special situation do not materialize.
 
NON-DIVERSIFIED STATUS
Small Company Growth Portfolio
 
   Compared to a diversified mutual fund, a non-diversified portfolio may invest
a greater share of its assets in the securities of fewer companies. The
portfolio managers typically have diversified the portfolio's investments.
However, to the extent that the portfolio uses non-diversification, it may be
more volatile than a diversified fund.
                                        5
<PAGE>   45
                              PERFORMANCE SUMMARY

The bar chart below and the table on the next page provide an indication of the
risks of investing in these portfolios. The bar chart shows you how each
portfolio's performance has varied from year to year for up to 10 years. The
table compares each portfolio's performance over time to that of a broadly based
securities market index and other indexes, if applicable. As with all mutual
funds, past performance is not a prediction of the future.
 
                           YEAR-BY-YEAR TOTAL RETURNS
<TABLE>
<CAPTION>
VALUE PORTFOLIO
 Best quarter:      16.70% (Q4 98)
 Worst quarter:    -14.25% (Q3 98)
 Inception date: 6/30/97

YEAR ENDED 12/31:
<S>                      <C>
1996
1997
1998                     13.75%
</TABLE>

<TABLE>
<CAPTION>
SMALL COMPANY VALUE PORTFOLIO
 Best quarter:       7.66% (Q1 98)
 Worst quarter:    -22.61% (Q3 98)
 Inception date: 10/31/97

YEAR ENDED 12/31:
<S>                      <C>
1996
1997
1998                     -12.63%
</TABLE>

<TABLE>
<CAPTION>
SMALL COMPANY GROWTH PORTFOLIO
 Best quarter:      21.25% (Q4 98)
 Worst quarter:    -23.39% (Q3 98)
 Inception date: 12/29/95

YEAR ENDED 12/31:
<S>                      <C>
1996                     33.10%
1997                     16.53%
1998                     -4.00%
</TABLE>

<TABLE>
<CAPTION>
POST-VENTURE CAPITAL PORTFOLIO
 Best quarter:      23.45% (Q4 98)
 Worst quarter:    -27.52% (Q3 98)
 Inception date: 10/31/97

YEAR ENDED 12/31:
<S>                      <C>
1996
1997
1998                     -2.54%
</TABLE> 


 
                                        6
 
<PAGE>   46
 
                          AVERAGE ANNUAL TOTAL RETURNS
 
<TABLE>
<CAPTION>
                                ONE YEAR   FIVE YEARS   10 YEARS    LIFE OF   INCEPTION
    PERIOD ENDED 12/31/98:        1998     1994-1998    1989-1998    FUND       DATE
<S>                             <C>        <C>          <C>         <C>       <C>
VALUE PORTFOLIO                  13.75%          NA          NA     17.38%     6/30/97
S&P 500 INDEX(1)                 28.57%          NA          NA     26.35%
SMALL COMPANY VALUE PORTFOLIO   -12.63%          NA          NA     -13.49%   10/31/97
RUSSELL 2000 INDEX(2)            -2.54%          NA          NA     -1.27%
SMALL COMPANY GROWTH PORTFOLIO   -4.00%          NA          NA     14.14%    12/29/95
RUSSELL 2000 GROWTH INDEX(3)      1.23%          NA          NA      8.36%
POST-VENTURE CAPITAL PORTFOLIO   -2.54%          NA          NA     -4.35%    10/31/97
RUSSELL 2000 GROWTH INDEX(3)      1.23%          NA          NA     -0.97%
RUSSELL 2500 GROWTH INDEX(4)      3.10%          NA          NA      0.99%
NASDAQ INDUSTRIALS INDEX(5)       6.82%          NA          NA      2.40%
</TABLE>
 
(1) The S&P 500 Index is an unmanaged index (with no defined investment
    objective) of common stocks, includes reinvestment of dividends, and is a
    registered trademark of McGraw-Hill Co., Inc.
 
(2) The Russell 2000 Index is an unmanaged index (with no defined investment
    objective) of approximately 2,000 small-cap stocks, includes reinvestment of
    dividends, and is compiled by Frank Russell Company.
 
(3) The Russell 2000 Growth Index is an unmanaged index (with no defined
    investment objective) of those securities in the Russell 2000 Index with a
    greater-than-average growth orientation. The Russell 2000 Growth Index
    includes reinvestment of dividends, and is compiled by Frank Russell
    Company.
 
(4) The Russell 2500 Growth Index measures the performance of those companies in
    the Russell 2500 Index with higher price-to-book values and higher
    forecasted growth rates. The Russell 2500 Index is composed of the 2,500
    smallest companies in the Russell 3000 Index, which measures the performance
    of the 3,000 largest U.S. companies based on total market capitalization.
    The Russell 2500 Index represents approximately 22% of the total market
    capitalization of the Russell 3000 Index.
 
(5) The NASDAQ Industrials Index measures the stock price performance of more
    than 3,000 industrial issues included in the NASDAQ OTC Composite Index. The
    NASDAQ OTC Composite Index represents 4,500 stocks traded over the counter.
 
                                        7
<PAGE>   47
 
                           UNDERSTANDING PERFORMANCE
 
   - TOTAL RETURN tells you how much an investment in a portfolio has changed
    in value over a given time period. It assumes that all dividends and
    capital gains (if any) were reinvested in additional shares. The change
    in value can be stated either as a cumulative return or as an average
    annual rate of return.
 
   - A CUMULATIVE TOTAL RETURN is the actual return of an investment for a
     specified period. The year-by-year total returns in the bar chart are
     examples of one-year cumulative total returns.
 
   - An AVERAGE ANNUAL TOTAL RETURN applies to periods longer than one year.
     It smoothes out the variations in year-by-year performance to tell you
     what constant annual return would have produced the investment's actual
     cumulative return. This gives you an idea of an investment's annual
     contribution to your portfolio, assuming you held it for the entire
     period.
 
   - Because of compounding, the average annual total returns in the table
     cannot be computed by averaging the returns in the bar chart.
 
                                        8
<PAGE>   48
 
                       This page intentionally left blank
 
                                        9
<PAGE>   49
                               INVESTOR EXPENSES
 
                          FEES AND PORTFOLIO EXPENSES
 
This table describes the fees and expenses you may bear as a shareholder. Annual
portfolio operating expense figures are for the fiscal year ended October 31,
1998.
 
<TABLE>
<CAPTION>
 
<S>                                <C>         <C>         <C>         <C>
                                                 SMALL       SMALL
                                                COMPANY     COMPANY    POST-VENTURE
                                     VALUE       VALUE      GROWTH       CAPITAL
                                   PORTFOLIO   PORTFOLIO   PORTFOLIO    PORTFOLIO
SHAREHOLDER FEES
 (paid directly from your investment)
Sales charge "load" on
   purchases                        NONE        NONE        NONE         NONE
Deferred sales charge "load"        NONE        NONE        NONE         NONE
Sales charge "load" on reinvested
  distributions                       NONE        NONE        NONE         NONE
Redemption fees                       NONE        NONE        NONE         NONE
Exchange fees                         NONE        NONE        NONE         NONE
ANNUAL PORTFOLIO OPERATING EXPENSES
 (deducted from portfolio assets)
Management fee                        .75%        .90%        .90%        1.10%
Distribution and service
   (12b-1) fee                        NONE        NONE        NONE         NONE
Other expenses                        .44%       1.74%        .27%        4.34%
TOTAL ANNUAL PORTFOLIO
   OPERATING EXPENSES*               1.19%       2.64%       1.17%        5.44%
</TABLE>
 
* Actual fees and expenses for the fiscal year ended October 31, 1998 are shown
  below. Fee waivers and expense reimbursements or credits reduced some expenses
  during 1998 but may be discontinued at any time.
 
<TABLE>
<CAPTION>
                                                SMALL       SMALL
                                               COMPANY     COMPANY    POST-VENTURE
   EXPENSES AFTER WAIVERS         VALUE         VALUE      GROWTH       CAPITAL
     AND REIMBURSEMENTS         PORTFOLIO     PORTFOLIO   PORTFOLIO    PORTFOLIO
<S>                            <C>            <C>         <C>         <C>
Management fee                     .36%          .25%        .72%         .28%
Distribution and service
   (12b-1) fee                     NONE          NONE        NONE         NONE
Other expenses                     .39%          .74%        .27%         .97%
TOTAL ANNUAL PORTFOLIO
 OPERATING
 EXPENSES                          .75%          .99%        .99%        1.25%
</TABLE>
 
                                       10
 
<PAGE>   50
 
                                    EXAMPLE
 
This example may help you compare the cost of investing in these portfolios with
the cost of investing in other mutual funds. Because it uses hypothetical
conditions, your actual costs may be higher or lower.
 
Assume you invest $10,000, each portfolio returns 5% annually, expense ratios
remain as listed in the first table on the opposite page (before fee waivers and
expense reimbursements or credits) and you close your account at the end of each
of the time periods shown. Based on these assumptions, your cost would be:
 
<TABLE>
<CAPTION>
                                         ONE YEAR   THREE YEARS   FIVE YEARS   10 YEARS
<S>                                      <C>        <C>           <C>          <C>
VALUE PORTFOLIO                            $121         $378          $654      $1,443
SMALL COMPANY VALUE PORTFOLIO              $267         $820        $1,400      $2,973
SMALL COMPANY GROWTH PORTFOLIO             $119         $372          $644      $1,420
POST-VENTURE CAPITAL PORTFOLIO             $543       $1,621        $2,690      $5,322
</TABLE>
 
                                       11
<PAGE>   51
                            THE PORTFOLIOS IN DETAIL

 
     THE MANAGEMENT FIRMS
 
WARBURG PINCUS ASSET
MANAGEMENT, INC.
466 Lexington Avenue
New York, NY 10017-3147
 
 - Investment adviser for the portfolios
 
 - Responsible for managing each portfolio's assets according to its goal and
   strategies and supervising Abbott's activities for the Post-Venture Capital
   Portfolio
 
 - A professional investment-advisory firm providing investment services to
   individuals since 1970 and to institutions since 1973
 
 - Currently manages approximately $22 billion in assets
 
   For easier reading, Warburg Pincus Asset Management, Inc. will be referred to
as "Warburg Pincus" or "we" throughout this Prospectus.

ABBOTT CAPITAL MANAGEMENT, LLC
50 Rowes Wharf, Suite 240
Boston, MA 02110-3328

 - Sub-investment adviser for the Post-Venture Capital Portfolio
 
 - Responsible for managing the portfolio's investments in private-equity
   portfolios
 
 - A registered investment adviser concentrating on venture-capital, buyout, and
   special-situation investments
 
 - Currently manages approximately $2.4 billion in assets
 
                                       12
 
<PAGE>   52
 
     PORTFOLIO
     INFORMATION KEY
 
   Concise descriptions of each portfolio begin on the next page. Each
description provides the following information:
 
GOAL AND STRATEGIES
   The portfolio's particular investment goal and the strategies it intends to
use in pursuing that goal. Percentages of portfolio assets are based on total
assets unless indicated otherwise.
 
PORTFOLIO INVESTMENTS
   The primary types of securities in which the portfolio invests. Secondary
investments are described in "More About Risk."
 
RISK FACTORS
   The major risk factors associated with the portfolio. Additional risk factors
are included in "More About Risk."
 
PORTFOLIO MANAGEMENT
   The individuals designated by the investment adviser or sub-investment
adviser to handle the portfolio's day-to-day management.
 
INVESTOR EXPENSES
   Actual portfolio expenses for the 1998 fiscal year. Future expenses may be
higher or lower.
 
 - MANAGEMENT FEE The fee paid to the investment adviser and sub-investment
  adviser for providing investment advice to the portfolio. Expressed as a
  percentage of average net assets after waivers.
 
 - OTHER EXPENSES Fees paid by the portfolio for items such as administration,
  transfer agency, custody, auditing, legal and registration fees and
  miscellaneous expenses. Expressed as a percentage of average net assets after
  waivers, credits and reimbursements.
 
FINANCIAL HIGHLIGHTS
   A table showing the portfolio's audited financial performance for up to five
years.
 
 - TOTAL RETURN How much you would have earned on an investment in the
  portfolio, assuming you had reinvested all dividend and capital-gain
  distributions.
 
 - PORTFOLIO TURNOVER An indication of trading frequency. The portfolios may
  sell securities without regard to the length of time they have been held. A
  high turnover rate may increase the portfolio's transaction costs and
  negatively affect its performance. Portfolio turnover may also result in
  capital-gain distributions that could raise your income-tax liability.
 
   The Annual Report includes the auditors' report, along with the portfolio's
financial statements. It is available free upon request.
 
                                       13
<PAGE>   53
                                VALUE PORTFOLIO
 
     GOAL AND STRATEGIES
 
   The Value Portfolio seeks total return. To pursue this goal, it invests
primarily in equity securities of value companies.
 
   Value companies are companies whose earnings power or asset value does not
appear to be reflected in the current stock price. As a result, value companies
look underpriced according to financial measurements of their intrinsic worth or
business prospects. These measurements include price-to-earnings, price-to-book,
price-to-cash flow and debt-to-equity ratios. The portfolio manager determines
value based upon research and analysis, taking all relevant factors into
account.
 
   Under normal market conditions, the portfolio will invest at least 65% of its
assets in equity securities of value companies. This portfolio expects to focus
on large U.S. companies with market capitalizations of $1 billion or more,
although it may invest in companies of any size.
 
   Current income is a secondary objective of the portfolio, which the portfolio
pursues by investing in dividend-paying equity securities. However, the
portfolio's dividend distribution will vary and may be low.
 
     PORTFOLIO INVESTMENTS
 
   This portfolio intends to invest at least 80% of its assets in equity
securities of value companies, including:
 
 - common and preferred stocks
 
 - securities convertible into common stocks
 
 - rights and warrants
 
   It may also invest in non-convertible debt securities such as bonds,
debentures and notes.
 
   This portfolio may invest up to:
 
 - 10% of net assets in debt securities rated from BB/Ba to C (junk bonds)
 
 - 15% of assets in real-estate investment trusts (REITs)
 
 - 20% of assets in foreign securities
 
   To a limited extent, the portfolio may also engage in other investment
practices.
 
     RISK FACTORS
 
   This portfolio's principal risk factor is:
 
 - market risk
 
   The value of your investment will fluctuate in response to stock-market
movements. The amount of income you receive from the portfolio also will
fluctuate.
 
   The portfolio's emphasis on large-company value stocks may reduce its
volatility and downside risk. Of course, this is not guaranteed. Value stocks in
theory are already underpriced, and large-company stocks tend to be less
volatile than small-company stocks. However, a value stock may never reach what
the manager believes is its full value, or may even go down in price. In the
long run, the portfolio may produce more modest returns than riskier stock
portfolios as a trade-off for this potentially lower risk.
                                       14
 
<PAGE>   54
 
   "More About Risk" details certain other investment practices the portfolio
may use. Please read that section carefully before you invest.
 
     PORTFOLIO MANAGEMENT
 
   Brian S. Posner manages the portfolio. You can find out more about him in
"Meet the Managers."
 
     INVESTOR EXPENSES
 
<TABLE>
<S>                                                                     <C>
   Management fee                                                        .36%
   All other expenses                                                    .39%
                                                                         ----
     Total expenses                                                      .75%
</TABLE>
 
                              FINANCIAL HIGHLIGHTS
 
The figures below have been audited by the portfolio's independent auditors,
PricewaterhouseCoopers LLP.
 
<TABLE>
<CAPTION>
 
                       PERIOD ENDED:                             1998       1997(1)
<S>                                                           <C>           <C>
PER-SHARE DATA
Net asset value, beginning of period                              $10.64     $10.00
                                                                 =======    =======
Investment activities:
Net investment income                                               0.16       0.03
Net gains or losses on
investments (both realized
and unrealized)                                                     0.86       0.61
                                                                 -------    -------
 Total from investment activities                                   1.02       0.64
                                                                 -------    -------
Distributions:
From net investment income                                         (0.08)      0.00
From realized capital gains                                        (0.05)      0.00
                                                                 -------    -------
 Total distributions                                               (0.13)      0.00
                                                                 -------    -------
Net asset value, end of period                                    $11.53     $10.64
                                                                 =======    =======
Total return                                                        9.76%      6.40%(2)
RATIOS AND SUPPLEMENTAL DATA
Net assets, end of period
(000s omitted)                                                   $58,910    $15,565
Ratio of expenses to average net assets                              .75%(4)     .75%(3,4)
Ratio of net income to average net assets                           1.27%      1.60%(3)
Decrease reflected in above operating expense ratios due to
waivers/reimbursements                                               .44%      1.67%(3)
Portfolio turnover rate                                            70.74%     34.81%(2)
</TABLE>
 
(1) For the period June 30, 1997 (Commencement of Operations) through October
    31, 1997.
 
(2) Not annualized.
 
(3) Annualized.
 
(4) Interest earned on uninvested cash balances is used to offset portions of
    the transfer agent expense. These arrangements had no effect on the
    portfolio's expense ratio.
                                       15
<PAGE>   55
                         SMALL COMPANY VALUE PORTFOLIO
 
     GOAL AND STRATEGIES
 
   The Small Company Value Portfolio seeks long-term capital appreciation. To
pursue this goal, it invests in equity securities of small U.S. value companies.
Current income is a secondary consideration in selecting portfolio investments.
 
   Value companies are companies whose earnings power or asset value does not
appear to be reflected in the current stock price. As a result, value companies
look underpriced according to financial measurements of their intrinsic worth or
business prospects. These measurements include price-to-earnings, price-to-book,
price-to-cash flow and debt-to-equity ratios. The portfolio manager determines
value based upon research and analysis, taking all relevant factors into
account.
 
   Under normal market conditions, the portfolio will invest at least 65% of
assets in equity securities of small U.S. companies. The portfolio considers a
"small" company to be one whose market capitalization is within the range of
capitalizations of companies in the Russell 2000 Index. As of December 31, 1998,
the Russell 2000 Index included companies with market capitalizations between
$4.4 million and $3.2 billion.
 
   Some companies may outgrow the definition of a small company after the
portfolio has purchased their securities. These companies continue to be
considered small for purposes of the portfolio's 65% minimum allocation to
small-company equities. In addition, the portfolio may invest in companies of
any size once the 65% policy is met. As a result, the portfolio's average market
capitalization may sometimes exceed that of the largest company in the Russell
2000 Index.
 
     PORTFOLIO INVESTMENTS
 
   This portfolio invests primarily in equity securities of small-capitalization
value companies. Equity holdings may consist of:
 
 - common and preferred stocks
 
 - securities convertible into common stocks
 
 - rights and warrants
 
   The portfolio may invest up to 20% of assets in foreign securities. To a
limited extent, it may also engage in other investment practices.
 
     RISK FACTORS
 
   This portfolio's principal risk factors are:
 
 - market risk
 
 - start-up and other small companies
 
 - special-situation companies
 
   The value of your investment will fluctuate in response to stock-market
movements. Investing in start-up and other small companies may expose the
portfolio to increased market, liquidity and information risks. These risks are
defined in "More About Risk."
 
   Small companies are often involved in "special situations." Securities of
special-situation companies may decline in value and hurt the portfolio's
performance if
                                       16
 
<PAGE>   56
 
the anticipated benefits of the special situation do not materialize. "More
About Risk" details certain other investment practices the portfolio may use.
Please read that section carefully before you invest.
 
     PORTFOLIO MANAGEMENT
 
   Kyle F. Frey manages the portfolio. You can find out more about him in "Meet
the Managers."
 
     INVESTOR EXPENSES
<TABLE>
<S>                                                                    <C>
   Management fee                                                        .25%
   All other expenses                                                    .74%
                                                                         ----
     Total expenses                                                      .99%
</TABLE>
 
                              FINANCIAL HIGHLIGHTS
 
The figures below have been audited by the portfolio's independent auditors,
PricewaterhouseCoopers LLP.
 
<TABLE>
<CAPTION>
 
                       PERIOD ENDED:                          10/98(1)
<S>                                                           <C>
PER-SHARE DATA
Net asset value, beginning of period                            $10.00
                                                               =======
Investment activities:
Net investment income                                             0.03
Net gains or losses on investments
(both realized and unrealized)                                   (2.05)
                                                               -------
 Total from investment activities                                (2.02)
                                                               -------
Net asset value, end of period                                   $7.98
                                                               =======
Total return                                                    (20.20%)
RATIOS AND SUPPLEMENTAL DATA
Net assets, end of period
(000s omitted)                                                  $1,784
Ratio of expenses to average net assets                            .99%(2)
Ratio of net income to average net assets                          .09%
Decrease reflected in above operating expense ratio due to
waivers/reimbursements                                            1.65%
Portfolio turnover rate                                         248.40%
</TABLE>
 
(1) For the year October 31, 1997 (Commencement of Operations) through October
    31, 1998.
 
(2) Interest earned on uninvested cash balances is used to offset portions of
    the transfer agent expense. These arrangements had no effect on the
    portfolio's expense ratio.
 
                                       17
<PAGE>   57
                         SMALL COMPANY GROWTH PORTFOLIO
 
     GOAL AND STRATEGIES
 
   The Small Company Growth Portfolio seeks capital growth. To pursue this goal,
it invests in equity securities of small U.S. growth companies.
 
   In seeking to identify growth companies--companies with attractive
capital-growth potential--the portfolio's portfolio managers often look for:
 
 - companies still in the developmental stage
 
 - older companies that appear to be entering a new stage of growth
 
 - companies providing products or services with a high unit-volume growth rate
 
   The portfolio may also invest in emerging-growth companies--small or
medium-size companies that have passed their start-up phase, show positive
earnings, and offer the potential for accelerated earnings growth. Emerging-
growth companies generally stand to benefit from new products or services,
technological developments, changes in management or other factors.
 
   Under normal market conditions, the portfolio will invest at least 65% of
assets in equity securities of small U.S. companies. The portfolio considers a
"small" company to be one whose market capitalization is within the range of
capitalizations of companies in the Russell 2000 Index. As of December 31, 1998,
the Russell 2000 Index included companies with market capitalizations between
$4.4 million and $3.2 billion.
 
   Some companies may outgrow the definition of a small company after the
portfolio has purchased their securities. These companies continue to be
considered small for purposes of the portfolio's minimum 65% allocation to
small-company equities. In addition, the portfolio may invest in companies of
any size once the 65% policy is met. As a result, the portfolio's average market
capitalization may sometimes exceed that of the largest company in the Russell
2000 Index.
 
     PORTFOLIO INVESTMENTS
 
   This portfolio intends to invest at least 90% of assets in equity securities
of small-capitalization growth companies. Equity holdings may consist of:
 
 - common and preferred stocks
 
 - securities convertible into common stocks
 
 - rights and warrants
 
   The portfolio may invest up to 20% of assets in foreign securities. To a
limited extent, it may also engage in other investment practices.
 
     RISK FACTORS
 
   This portfolio's principal risk factors are:
 
 - market risk
 
 - start-up and other small companies
 
 - special-situation companies
 
 - non-diversified status
 
   The value of your investment will fluctuate in response to stock-market
movements. Investing in start-up and other small companies may expose the
                                       18
 
<PAGE>   58
portfolio to increased market, liquidity and information risks. These risks are
defined in "More About Risk."
 
   Small companies and emerging-growth companies are often involved in "special
situations." Securities of special-situation companies may decline in value and
hurt the portfolio's performance if the anticipated benefits of the special
situation do not materialize.
 
   "More About Risk" details certain other investment practices the portfolio
may use. Please read that section carefully before you invest.
     PORTFOLIO MANAGEMENT
 
   Stephen J. Lurito manages the portfolio. You can find out more about him in
"Meet the Managers."
 
     INVESTOR EXPENSES
 
<TABLE>
<S>                                                                     <C>   
   Management fee                                                        .72%
   All other expenses                                                    .27%
                                                                         ----
 
     Total expenses                                                      .99%
</TABLE>
 
                              FINANCIAL HIGHLIGHTS
The figures below have been audited by the portfolio's independent auditors,
PricewaterhouseCoopers LLP.
 
<TABLE>
<CAPTION>
 
                     PERIOD ENDED:                         10/98     10/97         10/96(1
<S>                                                       <C>       <C>           <C>
PER-SHARE DATA
Net asset value, beginning of period                       $15.89     $12.92       $10.00
                                                          =======    =======      =======
Investment activities:
Net investment income                                       (0.08)     (0.05)       (0.01)
Net gains or losses on investments (both realized and
unrealized)                                                 (2.92)      3.02         2.93
                                                          -------    -------      -------
 Total from investment activities                           (3.00)      2.97         2.92
                                                          -------    -------      -------
Net asset value, end of period                             $12.89     $15.89       $12.92
                                                          =======    =======      =======
Total return                                               (18.88%)    22.99%       29.20%(2)
RATIOS AND SUPPLEMENTAL DATA
Net assets, end of period (000s omitted)                  $194,164  $217,861      $96,827
Ratio of expenses to average net assets                       .99%(4)      .99%(4)     .99%(3,4)
Ratio of net income to average net assets                    (.54%)     (.53%)       (.18%)(3)
Decrease reflected in above operating expense ratio due
to waivers/reimbursements                                     .18%       .20%         .69%(3)
Portfolio turnover rate                                     75.20%     91.59%       57.38%(2)
</TABLE>
 
(1) For the period December 29, 1995 (Commencement of Operations) through
    October 31, 1996.
 
(2) Not annualized.
 
(3) Annualized.
 
(4) Interest earned on uninvested cash balances is used to offset portions of
    the transfer agent expense. These arrangements had no effect on the
    portfolio's expense ratio.
                                       19
<PAGE>   59
                         POST-VENTURE CAPITAL PORTFOLIO
 
     GOAL AND STRATEGIES
 
   The Post-Venture Capital Portfolio seeks long-term growth of capital. To
pursue this goal, it invests in equity securities of U.S. companies considered
to be in their post-venture-capital stage of development.
 
   A post-venture-capital company is one that has received venture-capital
financing either:
 
 - during the early stages of the company's existence or the early stages of the
  development of a new product or service, or
 
 - as part of a restructuring or recapitalization of the company
 
   In either case, one or more of the following will have occurred within 10
years prior to the portfolio's purchase of the company's securities:
 
 - the investment of venture-capital financing
 
 - distribution of the company's securities to venture-capital investors
 
 - the initial public offering
 
   Under normal market conditions, the portfolio will invest at least 65% of
assets in equity securities of post-venture-capital companies. The portfolio may
invest in companies of any size.
 
     PORTFOLIO INVESTMENTS
 
   This portfolio invests primarily in equity securities of post-venture-capital
companies. Equity holdings may consist of:
 
 - common and preferred stocks
 
 - rights and warrants
 
 - securities convertible into common stocks
 
 - partnership interests
 
   The portfolio may invest up to:
 
 - 10% of assets in special-situation companies
 
 - 10% of assets in private-equity portfolios that invest in venture-capital
  companies
 
 - 20% of assets in foreign securities
 
   To a limited extent, the portfolio may also engage in other investment
practices.
 
     RISK FACTORS
 
   This portfolio's principal risk factors are:
 
 - market risk
 
 - start-up and other small companies
 
 - special-situation companies
 
   The value of your investment will fluctuate in response to stock-market
movements. Investing in start-up and other small companies may expose the
portfolio to increased market, information and liquidity risks. These risks are
defined in "More About Risk."
 
   Post-venture-capital companies are often involved in "special situations."
Securities of special-situation companies may decline in value and hurt the
portfolio's performance if the anticipated benefits of the special situation do
not materialize.
 
   To the extent that it invests in private equity portfolios, the portfolio
takes on additional liquidity, valuation and other risks. "More About Risk"
details certain other investment practices the portfolio
                                       20
 
<PAGE>   60
 
may use. Please read that section carefully before you invest.
 
     PORTFOLIO MANAGEMENT
 
   Elizabeth B. Dater and Stephen J. Lurito are Co-Portfolio Managers of the
portfolio. Associate Portfolio Managers Robert S. Janis and Christopher M. Nawn
assist them. Raymond L. Held and Thaddeus I. Grey manage the portfolio's
investments in private-equity portfolios. You can find out more about the
portfolio's managers in "Meet the Managers."
 
     INVESTOR EXPENSES
<TABLE>
<S>                                                                     <C>
   Management fee                                                        .28%
   All other expenses                                                    .97%
                                                                        -----
     Total expenses                                                     1.25%
</TABLE>
 
                              FINANCIAL HIGHLIGHTS
The figures below have been audited by the portfolio's independent auditors,
PricewaterhouseCoopers LLP.
 
<TABLE>
<CAPTION>
 
                       PERIOD ENDED:                          10/98(1)
<S>                                                           <C>
PER-SHARE DATA
Net asset value, beginning of period                            $10.00
                                                               =======
Investment activities:
Net investment income                                            (0.09)
Net gains or losses on investments
(both realized and unrealized)                                   (1.68)
                                                               -------
 Total from investment activities                                (1.77)
                                                               -------
Net asset value, end of period                                   $8.23
                                                               =======
Total return                                                    (17.70%)
RATIOS AND SUPPLEMENTAL DATA
Net assets, end of period (000s omitted)                      $1,180
Ratio of expenses to average net assets                           1.25%(2)
Ratio of net income to average net assets                         (.76%)
Decrease reflected in above operating expense ratio due to
waivers/reimbursements                                            4.19%
Portfolio turnover rate                                          98.89%
</TABLE>
 
(1) For the year October 31, 1997 (Commencement of Operations) through October
    31, 1998.
 
(2) Interest earned on uninvested cash balances is used to offset portions of
    the transfer agent expense. These arrangements had no effect on the
    portfolio's expense ratio.
 
                                       21
<PAGE>   61
                                MORE ABOUT RISK
 
     INTRODUCTION
 
   A portfolio's goal and principal strategies largely determine its risk
profile. You will find a concise description of each portfolio's risk profile in
"Key Points." The preceding discussions of each portfolio contain more detailed
information. This section discusses other risks that may affect the portfolios.
 
   The "Certain Investment Practices" table in this section takes a more
detailed look at certain investment practices the portfolios may use. Some of
these practices may have higher risks associated with them. However, each
portfolio has limitations and policies designed to reduce many of the risks.
 
     TYPES OF INVESTMENT RISK
 
   The following risks are referred to throughout this prospectus.
 
   CORRELATION RISK The risk that changes in the value of a hedging instrument
will not match those of the investment being hedged.
 
   CREDIT RISK The issuer of a security or the counterparty to a contract may
default or otherwise become unable to honor a financial obligation.
 
   CURRENCY RISK Fluctuations in exchange rates between the U.S. dollar and
foreign currencies may negatively affect an investment. Adverse changes in
exchange rates may erode or reverse any gains produced by foreign-currency-
denominated investments and may widen any losses.
 
   EURO CONVERSION The introduction of a new single European currency, the euro,
may result in uncertainties for securities of European companies, European
markets and the operation of the portfolios. The euro was introduced on January
1, 1999, by 11 European Union member countries who are participating in European
Monetary Union (EMU).
 
   The introduction of the euro results in the redenomination of certain
European debt and equity securities over a period of time, which may bring
differences in various accounting, tax and/or legal treatments that would not
otherwise occur. Any market disruptions relating to the introduction of the euro
could adversely affect the value of European securities and currencies held by
the portfolios. Other risks relate to the ability of financial institutions'
systems to process euro transactions. Additional economic and operational issues
are raised by the fact that certain European Union member countries, including
the United Kingdom, did not participate in EMU on January 1, 1999, and therefore
did not implement the euro on that date.
 
   At this early stage no one knows what the degree of impact of the
introduction of the euro will be. To the extent that the market impact or effect
on a portfolio holding is negative or portfolio service-provider systems cannot
process the euro conversion, the portfolio performance could be hurt.
 
   EXPOSURE RISK The risk associated with investments (such as derivatives) or
 
                                       22
 
<PAGE>   62
 
practices (such as short selling) that increase the amount of money a portfolio
could gain or lose on an investment.
 
    - HEDGED Exposure risk could multiply losses generated by a derivative or
      practice used for hedging purposes. Such losses should be substantially
      offset by gains on the hedged investment. However, while hedging can
      reduce or eliminate losses, it can also reduce or eliminate gains.
 
    - SPECULATIVE To the extent that a derivative or practice is not used as a
      hedge, the portfolio is directly exposed to its risks. Gains or losses 
      from speculative positions in a derivative may be much greater than the
      derivative's original cost. For example, potential losses from writing 
      uncovered call options and from speculative short sales are unlimited.
 
   INFORMATION RISK Key information about an issuer, security or market may be
inaccurate or unavailable.
 
   INTEREST-RATE RISK Changes in interest rates may cause a decline in the
market value of an investment. With bonds and other fixed-income securities, a
rise in interest rates typically causes a fall in values, while a fall in
interest rates typically causes a rise in values.
 
   LIQUIDITY RISK Certain portfolio securities may be difficult or impossible to
sell at the time and the price that the portfolio would like. A portfolio may
have to lower the price, sell other securities instead or forego an investment
opportunity. Any of these could have a negative effect on portfolio management
or performance.
 
   MARKET RISK The market value of a security may move up and down, sometimes
rapidly and unpredictably. These fluctuations, which are often referred to as
"volatility," may cause a security to be worth less than it was worth at an
earlier time. Market risk may affect a single issuer, industry, sector of the
economy, or the market as a whole. Market risk is common to most
investments--including stocks and bonds, and the mutual funds that invest in
them.
 
   OPERATIONAL RISK Some countries have less-developed securities markets (and
related transaction, registration and custody practices) that could subject a
portfolio to losses from fraud, negligence, delay or other actions.
 
   POLITICAL RISK Foreign governments may expropriate assets, impose capital or
currency controls, impose punitive taxes, or nationalize a company or industry.
Any of these actions could have a severe effect on security prices and impair a
portfolio's ability to bring its capital or income back to the U.S. Other
political risks include economic policy changes, social and political
instability, military action and war.
 
   VALUATION RISK The lack of an active trading market may make it difficult to
obtain an accurate price for a portfolio security.
 
   YEAR 2000 PROCESSING RISK The portfolios' investment adviser is working to
address the Year 2000 issue relating to
                                       23
<PAGE>   63
 
the change from "99" to "00" on January 1, 2000, and has obtained assurances
from major service providers that they are taking similar steps. The adviser is
working on the Year 2000 issue pursuant to a plan designed to address potential
problems, and progress is proceeding according to the plan. The adviser
anticipates the completion of testing of internal systems in the first part of
1999, and is developing contingency plans intended to address any unexpected
service problems.
 
   The portfolios' operations are dependent upon interactions among many
participants in the financial-services and other related industries. There is no
assurance that preparations by the adviser and other industry participants will
be sufficient, and any noncompliant computer systems could hurt key portfolio
operations, such as shareholder servicing, pricing and trading.
 
   The Year 2000 issue affects practically all companies, organizations,
governments, markets and economies throughout the world -- including companies
or governmental entities in which the portfolios invest and markets in which
they trade. However, at this time no one knows precisely what the degree of
impact will be. To the extent that the impact on a portfolio holding or on
markets or economies is negative, it could seriously affect the portfolio's
performance.
 
                                       24
<PAGE>   64
 
                          CERTAIN INVESTMENT PRACTICES
 
For each of the following practices, this table shows the applicable investment
limitation. Risks are indicated for each practice.
 
KEY TO TABLE:
 
<TABLE>
<S>    <C>
[-]    Permitted without limitation; does not indicate
       actual use
20%    Italic type (e.g., 20%) represents an investment
       limitation as a percentage of NET fund assets; does
       not indicate actual use
20%    Roman type (e.g., 20%) represents an investment
       limitation as a percentage of TOTAL fund assets; does
       not indicate actual use
[ ]    Permitted, but not expected to be used to a
       significant extent
- --     Not permitted
</TABLE>
 
<TABLE>
<CAPTION>
 
                                                                            SMALL             SMALL              POST-
                                                                           COMPANY           COMPANY            VENTURE
                                                             VALUE          VALUE             GROWTH            CAPITAL
                                                           PORTFOLIO       PORTFOLIO         PORTFOLIO         PORTFOLIO

 INVESTMENT PRACTICE                                                                       LIMIT
<S>                                                            <C>               <C>            <C>               <C>
BORROWING The borrowing of money from banks to meet
redemptions or for other temporary or emergency purposes.
Speculative exposure risk.                                      30%               30%            30%               30%
- --------------------------------------------------------------------------------------------------------------------------
FUTURES AND OPTIONS ON FUTURES Exchange-traded contracts
that enable a portfolio to hedge against or speculate on
future changes in currency values, interest rates or stock
indexes. Futures obligate the portfolio (or give it the
right, in the case of options) to receive or make payment at
a specific future time based on those future changes.(1)
Correlation, currency, hedged exposure, interest-rate,
market, speculative exposure risks.(2)                          [ ]               [ ]            [ ]               [ ]
- --------------------------------------------------------------------------------------------------------------------------
FOREIGN SECURITIES Securities of foreign issuers. May
include depositary receipts. Currency, euro conversion,
information, liquidity, market, political, valuation risks.     20%               10%            10%               20%
- --------------------------------------------------------------------------------------------------------------------------
NON-INVESTMENT-GRADE DEBT SECURITIES Debt securities rated
below the fourth-highest grade (BBB/Baa) by Standard &
Poor's or Moody's rating service, and unrated securities of
comparable quality. Commonly referred to as junk bonds.
Credit, information, interest-rate, liquidity, market,
valuation risks.                                                10%               10%            [ ]               [ ]
- --------------------------------------------------------------------------------------------------------------------------
OPTIONS Instruments that provide a right to buy (call) or
sell (put) a particular security, currency or index of
securities at a fixed price within a certain time period. A
portfolio may purchase or sell (write) both put and call
options for hedging or speculative purposes.(1) Correlation,
credit, hedged exposure, liquidity, market, speculative
exposure, valuation risks.                                      25%               25%            25%               25%
- --------------------------------------------------------------------------------------------------------------------------
PRIVATE-EQUITY PORTFOLIOS Private limited partnerships or
other investment funds that themselves invest in equity or
debt securities of:
- -companies in the venture-capital or post-venture-capital
 stages of development
- -companies engaged in special situations or changes in
 corporate control, including buyouts
Information, liquidity, market, valuation risks.                [ ]               [ ]            [ ]               10%
- --------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
                                       25
 
<PAGE>   65
 
<TABLE>
<CAPTION>
                                                                              SMALL             SMALL              POST-
                                                                             COMPANY           COMPANY            VENTURE
                                                               VALUE          VALUE             GROWTH            CAPITAL
                                                             PORTFOLIO       PORTFOLIO         PORTFOLIO         PORTFOLIO

 INVESTMENT PRACTICE                                                                     LIMIT
<S>                                                            <C>               <C>               <C>               <C>
REAL-ESTATE INVESTMENT TRUSTS (REITS) Pooled investment
vehicles that invest primarily in income-producing real
estate or real-estate-related loans or interests. Credit,
interest-rate, market risks.                                    [ ]               [ ]               [ ]               [ ]
- -----------------------------------------------------------------------------------------------------------------------------
RESTRICTED AND OTHER ILLIQUID SECURITIES Securities with
restrictions on trading, or those not actively traded. May
include private placements. Liquidity, market, valuation
risks.                                                          15%               10%               10%               15%
- -----------------------------------------------------------------------------------------------------------------------------
SECURITIES LENDING Lending portfolio securities to financial
institutions; a portfolio receives cash, U.S. government
securities or bank letters of credit as collateral. Credit,
liquidity, market, operational risks.                          33 1/3%           33 1/3%           33 1/3%           33 1/3%
- -----------------------------------------------------------------------------------------------------------------------------
SHORT SALES Selling borrowed securities with the intention
of repurchasing them for a profit on the expectation that
the market price will drop. Liquidity, market, speculative
exposure risks.                                                  --                --                --               10%
- -----------------------------------------------------------------------------------------------------------------------------
SHORT SALES "AGAINST THE BOX" A short sale where the
portfolio owns enough shares of the security involved to
cover the borrowed securities, if necessary. Liquidity,
market, speculative exposure risks.                             [ ]               [ ]               [ ]               [ ]
- -----------------------------------------------------------------------------------------------------------------------------
SPECIAL-SITUATION COMPANIES Companies experiencing unusual
developments affecting their market values. Special
situations may include acquisition, consolidation,
reorganization, recapitalization, merger, liquidation,
special distribution, tender or exchange offer, or
potentially favorable litigation. Securities of a
special-situation company could decline in value and hurt a
portfolio's performance if the anticipated benefits of the
special situation do not materialize. Information, market
risks.                                                          [ ]               [-]               [-]               [-]
- -----------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                       26
<PAGE>   66
 
<TABLE>
<CAPTION>
                                                                              SMALL             SMALL              POST-
                                                                             COMPANY           COMPANY            VENTURE
                                                               VALUE          VALUE             GROWTH            CAPITAL
                                                             PORTFOLIO       PORTFOLIO         PORTFOLIO         PORTFOLIO

  INVESTMENT PRACTICE                                                                      LIMIT
<S>                                                            <C>               <C>               <C>               <C>
START-UP AND OTHER SMALL COMPANIES Companies with small
relative market capitalizations, including those with
continuous operations of less than three years. Information,
liquidity, market, valuation risks.                             [ ]               [-]               [-]               [-]
- -----------------------------------------------------------------------------------------------------------------------------
TEMPORARY DEFENSIVE TACTICS Placing some or all of a
portfolio's assets in investments such as money-market
obligations and investment-grade debt securities for
defensive purposes. Although intended to avoid losses in
adverse market, economic, political or other conditions,
defensive tactics might be inconsistent with a portfolio's
principal investment strategies and might prevent a
portfolio from achieving its goal.                              [ ]               [ ]               [ ]               [ ]
- -----------------------------------------------------------------------------------------------------------------------------
WARRANTS Options issued by a company granting the holder the
right to buy certain securities, generally common stock, at
a specified price and usually for a limited time. Liquidity,
market, speculative exposure risks.                             10%               10%               10%               10%
- -----------------------------------------------------------------------------------------------------------------------------
WHEN-ISSUED SECURITIES AND FORWARD COMMITMENTS The purchase
or sale of securities for delivery at a future date; market
value may change before delivery. Liquidity, market,
speculative exposure risks.                                     20%               20%               20%               20%
- -----------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
(1) The portfolios are not obligated to pursue any hedging strategy. In
    addition, hedging practices may not be available, may be too costly to be
    used effectively or may be unable to be used for other reasons.
(2) Each portfolio is limited to 5% of net assets for initial margin and premium
    amounts on futures positions considered to be speculative by the Commodity
    Futures Trading Commission.
 
                                       27
 
 
<PAGE>   67
                               MEET THE MANAGERS
 
                               [LIZ DATER PHOTO]
 
                               ELIZABETH B. DATER
                               Managing Director
 
 - Co-Portfolio Manager,
   Post-Venture Capital Portfolio
   since inception
 
 - With Warburg Pincus since 1978
 
                              [KYLE F. FREY PHOTO]
 
                                  KYLE F. FREY
                               Managing Director
 
 - Portfolio Manager,
   Small Company Value Portfolio
   since inception
 
 - With Warburg Pincus since 1989
 
                            [STEVEN J. LURITO PHOTO]
 
                               STEPHEN J. LURITO
                               Managing Director
 
 - Portfolio Manager,
   Small Company Growth Portfolio
   since inception
 
 - Co-Portfolio Manager,
   Post-Venture Capital Portfolio
   since inception
 
 - With Warburg Pincus since 1987
 
                            [Brian S. Posner Photo]
 
                                BRIAN S. POSNER
                               Managing Director
 
 - Portfolio Manager,
   Value Portfolio
   since inception
 
 - With Warburg Pincus since 1997
 
 - Portfolio manager with
   Fidelity Investments,
   1987 to 1996
           Job titles indicate position with the investment adviser.
 
                                       28
 
<PAGE>   68
 
                            [ROBERT S. JANIS PHOTO]
 
                                ROBERT S. JANIS
                               Managing Director
 
 - Associate Portfolio Manager,
   Post-Venture Capital Portfolio
   since inception
 
 - With Warburg Pincus since 1994
 
 - Previously vice president and senior research analyst with U.S. Trust Company
  of New York, 1985 to 1994
 
                           [CHRISTOPHER M. NAWN PHOTO]
 
                              CHRISTOPHER M. NAWN
                             Senior Vice President
 
 - Associate Portfolio Manager,
   Post-Venture Capital Portfolio
   since inception
 
 - With Warburg Pincus since 1994
 
 - Previously vice president and senior research analyst with Dreyfus
  Corporation, 1990 to 1994
 
                   SUB-INVESTMENT ADVISER PORTFOLIO MANAGERS
 
                         Post-Venture Capital Portfolio
 
   RAYMOND L. HELD and THADDEUS I. GRAY manage the Post-Venture Capital
   Portfolio's investments in private-equity portfolios. Both are Investment
   Managers and Managing Directors of Abbott Capital Management LLC, the
   portfolio's sub-investment adviser. Mr. Held has been with Abbott since
   1986, while Mr. Gray joined the firm in 1989.
 
                                       29
<PAGE>   69
                               ABOUT YOUR ACCOUNT
 
     SHARE VALUATION
 
   The price of your shares is also referred to as their net asset value (NAV).
 
   The NAV is determined at the close of regular trading on the New York Stock
Exchange (NYSE) (usually 4 p.m. Eastern Time) each day the NYSE is open for
business. It is calculated by dividing the each portfolio's total assets, less
its liabilities, by the number of shares outstanding in each portfolio.
 
   Each portfolio values its securities based on market quotations when it
calculates its NAV. If market quotations are not readily available, securities
and other assets are valued by another method that the Board of Directors
believes accurately reflects fair value. Debt obligations that will mature in 60
days or less are valued on the basis of amortized cost, unless the Board
determines that using this method would not reflect an investment's value.
 
   Some portfolio securities may be listed on foreign exchanges that are open on
days (such as U.S. holidays) when the portfolios do not compute their prices.
This could cause the value of a portfolio's investments to be affected by
trading on days when you cannot buy or sell shares.
 
   The Post-Venture Capital Portfolio initially values its investments in
private-equity portfolios at cost. After that, the Post-Venture Capital
Portfolio values these investments according to reports from the private-equity
portfolios that the sub-investment adviser generally receives on a quarterly
basis. The portfolio's net asset value typically will not reflect interim
changes in the values of its private-equity-portfolio investments.
 
     ACCOUNT STATEMENTS
 
   In general, you will receive account statements as follows:
 
 - after every transaction that affects your account balance (except for
  distribution reinvestments and automatic transactions)
 
 - after any changes of name or address of the registered owner(s)
 
 - otherwise, every quarter
 
   You will receive annual and semiannual financial reports.
 
     DISTRIBUTIONS
 
   As an investor in a portfolio, you are entitled to your share of the
portfolio's net income and gains on its investments. The portfolio passes these
earnings along to its shareholders as distributions.
 
   Each portfolio earns dividends from stocks and interest from bond, money-
market and other investments. These are passed along as dividend distributions.
A portfolio realizes capital gains whenever it sells securities for a higher
price than it paid for them. These are passed along as capital-gain
distributions.
 
   The portfolios typically distribute dividends and capital gains annually,
usually in December. Most investors have their distributions reinvested in
additional
                                       30
 
<PAGE>   70
 
shares of the same portfolio. Distributions will be reinvested unless you choose
on your account application to have a check for your distributions mailed to you
or sent by electronic transfer.
 
     TAXES
 
   As with any investment, you should consider how your investment in a
portfolio will be taxed. If your account is not a tax-advantaged retirement
account, you should be especially aware of the following tax implications.
Please consult your tax professional concerning your own tax situation.
 
TAXES ON DISTRIBUTIONS
   As long as a portfolio continues to meet the requirements for being a tax-
qualified regulated investment company, it pays no federal income tax on the
earnings it distributes to shareholders.
 
   Distributions you receive from a portfolio, whether reinvested or taken in
cash, are generally considered taxable. Portfolio distributions are taxed based
on the length of time the portfolio holds its assets, regardless of how long you
have held portfolio shares. Distributions from a portfolio's long-term capital
gains are taxed as capital gains; distributions from short-term capital gains
and other sources are generally taxed as ordinary income. The portfolios will
mostly make capital-gain distributions.
 
   If you buy shares shortly before or on the "record date"--the date that
establishes you as the person to receive the upcoming distribution--you may
receive a portion of the money you just invested in the form of a taxable
distribution.
 
   The Form 1099 that is mailed to you every January details your distributions
and their federal-tax category.
 
TAXES ON TRANSACTIONS 

   Any time you sell or exchange shares, it is considered a taxable event for
you. Depending on the purchase price and the sale price of the shares you sell
or exchange, you may have a gain or loss on the transaction. You are responsible
for any tax liabilities generated by your transactions.
 
                                       31
<PAGE>   71
                                 BUYING SHARES
 
     OPENING AN ACCOUNT
 
   Your account application provides us with key information we need to set up
your account correctly. It also lets you authorize services that you may find
convenient in the future.
 
   If you need an application, call our Institutional Shareholder Service Center
to receive one by mail or fax.
 
   You can make your initial investment by wire. The "By Wire" method in the
table enables you to buy shares on a particular day at that day's closing NAV.
     BUYING AND SELLING SHARES
 
   The Institutional Fund is open on those days when the NYSE is open, typically
Monday through Friday. If we receive your request in proper form by the close of
the NYSE (usually 4 p.m. ET), your transaction will be priced at that day's NAV.
If we receive it after that time, it will be priced at the next business day's
NAV.
 
                           MINIMUM INITIAL INVESTMENT
 
<TABLE>
<S>                                                                   <C>
Value Portfolio                                                       $1,000,000
 
Small Company Value
  Portfolio                                                           $1,000,000
 
Small Company Growth
  Portfolio                                                           $1,000,000
 
Post-Venture Capital
  Portfolio                                                           $1,000,000
</TABLE>
 
   There is no minimum subsequent investment. The minimum initial investment for
any group of related persons is an aggregate $4,000,000.
 
FINANCIAL-SERVICES FIRMS
   You may be able to buy and sell fund shares through financial-services firms
such as banks, brokers and financial advisors. The portfolios may authorize
these firms (and other intermediaries that the firms may designate) to accept
orders. When an authorized firm or its designee has received your order, it is
considered received by the portfolio and will be priced at the next-computed
NAV.
 
   Financial-services firms may charge transaction fees or other fees that you
could avoid by investing directly with the portfolio. Please read the firm's
program materials for any special provisions or additional service features that
may apply to your investment. Certain features of the portfolio, such as the
minimum initial investment amounts, may be modified.
 
     ADDING TO AN ACCOUNT
 
   You can add to your account in a variety of ways, as shown in the table.
 
                                       32
 
<PAGE>   72
 
<TABLE>
<CAPTION>
           OPENING AN ACCOUNT                            ADDING TO AN ACCOUNT
<S>                                            <C>
BY EXCHANGE
- - Call our Institutional Shareholder           - Call our Institutional Shareholder
  Service Center to request an exchange          Service Center to request an exchange
  from another Warburg Pincus fund or            from another Warburg Pincus fund or
  portfolio. Be sure to read the current         portfolio
  Prospectus for the new fund or               If you do not have telephone privileges,
  portfolio.                                   mail or fax a letter of instruction.
If you do not have telephone privileges,
mail or fax a letter of instruction.
BY WIRE
- - Complete and sign the New Account            - Call our Institutional Shareholder
  Application.                                   Service Center by 4 p.m. ET to inform us
- - Call our Institutional Shareholder             of the incoming wire. Please be sure to
  Service Center and fax the signed New          specify the account registration,
  Account Application by 4 p.m. ET.              account number and the fund and
- - Institutional Shareholder Services will        portfolio name on your wire advice.
  telephone you with your account number.      - Wire the money for receipt that day.
  Please be sure to specify the account
  registration, account number and the
  fund and portfolio name on your wire
  advice.
- - Wire your initial investment for
  receipt that day.
</TABLE>
 
                    INSTITUTIONAL SHAREHOLDER SERVICE CENTER
                                  800-222-8977
                      MONDAY - FRIDAY, 8 A.M. - 5 P.M. ET
                                       33
<PAGE>   73
                                 SELLING SHARES
 
<TABLE>
<CAPTION>
   SELLING SOME OR ALL OF YOUR SHARES                       CAN BE USED FOR
<S>                                            <C>
BY MAIL
 
Write us a letter of instruction that          - Sales of any amount.
includes:
- - your name(s) and signature(s)
- - the fund and portfolio name and account
  number
- - the dollar amount you want to sell
- - how to send the proceeds
Obtain a signature guarantee or other
documentation, if required (see "Selling
Shares
in Writing").
Mail the materials to Warburg Pincus
Institutional Fund, Inc.
If only a letter of instruction is
required, you can fax it to the
Institutional Shareholder Service Center
(unless a signature guarantee is
required).
BY EXCHANGE
- - Call our Institutional Shareholder           - Accounts with telephone privileges.
  Service Center to request an exchange        If you do not have telephone privileges,
  into another Warburg Pincus fund or          mail or fax a letter of instruction to
  portfolio. Be sure to read the current       exchange shares.
  Prospectus for the new fund or portfolio.
BY PHONE
 
Call our Institutional Shareholder             - Accounts with telephone privileges.
Service Center to request a redemption.
You can receive the proceeds as:
- - a check mailed to the address of record
- - a wire to your bank
See "By Wire" for details.
BY WIRE
- - Complete the "Wire Instructions" or          - Requests by phone or mail.
  "ACH on Demand" section of your New
  Account Application.
- - For federal-funds wires, proceeds will
  be wired on the next business day.
</TABLE>
 
                                       34
 
<PAGE>   74
 
                                HOW TO REACH US
 
  Institutional Shareholder Service Center
 
  Toll free: 800-222-8977
  Fax: 212-370-9833
 
  Mail:
   Warburg Pincus Institutional
   Fund, Inc.
   P.O. Box 9030
   Boston, MA 02205-9030
 
  Overnight/Courier Service:
   Boston Financial
   Attn: Warburg Pincus Institutional Fund, Inc.
   2 Heritage Drive
   North Quincy, MA 02171
 
  Internet Web Site:
   www.warburg.com
 
                               WIRE INSTRUCTIONS
 
  State Street Bank and Trust Company
  ABA# 0110 000 28
  Attn: Mutual Funds/Custody Dept.
  Warburg Pincus Institutional Fund, Inc.
  [Institutional Fund Portfolio Name]
  DDA# 9904-649-2
  F/F/C: [Account Number and Registration]

     SELLING SHARES IN WRITING
 
   Some circumstances require a written sell order, along with a signature
guarantee. These include:
 
 - accounts whose address of record has been changed within the past 30 days
 
 - redemption in certain large accounts (other than by exchange)
 
 - requests to send the proceeds to a different payee or address
 
 - shares represented by certificates, which must be returned with your sell
  order
 
   A signature guarantee helps protect against fraud. You can obtain one from
most banks or securities dealers, but not from a notary public.
 
     RECENTLY PURCHASED SHARES
 
   If the portfolio has not yet collected payment for the shares you are
selling, it will delay sending you the proceeds until your purchase payment
clears. This may take up to 10 calendar days after the purchase. To avoid the
collection period, consider buying shares by bank wire.
 
                    INSTITUTIONAL SHAREHOLDER SERVICE CENTER
                                  800-222-8977
                      MONDAY - FRIDAY, 8 A.M. - 5 P.M. ET
                                       35
<PAGE>   75
                                 OTHER POLICIES
 
     TRANSACTION DETAILS
 
   You are entitled to capital-gain and earned-dividend distributions as soon as
your purchase order is executed.
 
   Your purchase order will be canceled and you may be liable for losses or fees
incurred by a portfolio if:
 
 - your investment check does not clear
 
 - you place a telephone order by 4 p.m. ET and we do not receive your wire that
   day
 
   If you wire money without first calling our Institutional Shareholder Service
Center to place an order, and your wire arrives after the close of regular
trading on the NYSE, then your order will not be executed until the end of the
next business day. In the meantime, your payment will be held uninvested. Your
bank or other financial-services firm may charge a fee to send or receive wire
transfers.
 
   While we monitor telephone-servicing resources carefully, during periods of
significant economic or market change it may be difficult to place orders by
telephone.
 
   Uncashed redemption or distribution checks do not earn interest.
 
     ACCOUNT CHANGES
 
   Call our Institutional Shareholder Service Center to update your account
records whenever you change your address. Institutional Shareholder Services can
also help you change your account information or privileges.
     SPECIAL SITUATIONS
 
   The Institutional Fund reserves the right to:
 
 - refuse any purchase or exchange request, including those from any person or
   group who, in the fund's view, is likely to engage in excessive trading
 
 - change or discontinue its exchange privilege after 30 days' notice to current
   investors, or temporarily suspend this privilege during unusual market
   conditions
 
 - change minimum investment amounts after 15 days' notice to current investors
   of any increases
 
 - charge a wire-redemption fee
 
 - make a "redemption in kind"--payment in portfolio securities rather than
   cash--for certain large redemption amounts that could hurt portfolio
   operations
 
 - suspend redemptions or postpone payment dates as permitted by the Investment
   Company Act of 1940 (such as during periods other than weekends or holidays
   when the NYSE is closed or trading on the NYSE is restricted, or any other
   time that the SEC permits)
 
 - modify or waive its minimum investment requirements for employees and clients
   of its adviser and the adviser's affiliates
 
 - stop offering a portfolio's shares for a period of time (such as when
   management believes that a substantial increase in assets could adversely
   affect it)
 
                    INSTITUTIONAL SHAREHOLDER SERVICE CENTER
                                  800-222-8977
                      MONDAY - FRIDAY, 8 A.M. - 5 P.M. ET
                                       36
 
<PAGE>   76
 
                       This page intentionally left blank
 
                                       37
<PAGE>   77
 
                       This page intentionally left blank
 
                                       38
<PAGE>   78
                              FOR MORE INFORMATION
 
   More information about these portfolios is available free upon request,
including the following:
 
     ANNUAL/SEMIANNUAL REPORTS TO SHAREHOLDERS
 
   Includes financial statements, portfolio investments and detailed performance
information.
 
   The Annual Report also contains a letter from the portfolio's manager
discussing market conditions and investment strategies that significantly
affected portfolio performance during its past fiscal year.
 
     OTHER INFORMATION
 
   A current Statement of Additional Information (SAI), which provides more
details about the portfolios, is on file with the Securities and Exchange
Commission (SEC) and is incorporated by reference.
 
   You may visit the SEC's Internet Web site (www.sec.gov) to view the SAI,
material incorporated by reference and other information. You can also obtain
copies by visiting the SEC's Public Reference Room in Washington, DC
(phone 800-SEC-0330) or by sending your request and a duplicating fee to the
SEC's Public Reference Section, Washington, DC 20549-6009.
 
   Please contact Warburg Pincus Institutional Fund, Inc. to obtain, without
charge, the SAI and Annual and Semiannual Reports and to make shareholder
inquiries:
 
BY TELEPHONE:
   800-222-8977
 
BY MAIL:
   Warburg Pincus
   Institutional Fund, Inc.
   P.O. Box 9030
   Boston, MA 02205-9030
 
BY OVERNIGHT OR COURIER SERVICE:
   Boston Financial
   Attn: Warburg Pincus Institutional Fund, Inc.
   2 Heritage Drive
   North Quincy, MA 02171
 
ON THE INTERNET:
   www.warburg.com
 
SEC FILE NUMBER:
 
Warburg Pincus Institutional
Fund, Inc.                                                              811-6670
 
 
                             [WARBURG PINCUS LOGO]
                      P.O. BOX 9030, BOSTON, MA 02205-9030
 
                        800-222-8977 [-] www.warburg.com
COUNSELLORS SECURITIES INC., DISTRIBUTOR.                           WPINU-1-0299
<PAGE>   79


                       STATEMENT OF ADDITIONAL INFORMATION

                                February 22, 1999

                     WARBURG PINCUS INSTITUTIONAL FUND, INC.

                         POST-VENTURE CAPITAL PORTFOLIO
                         SMALL COMPANY GROWTH PORTFOLIO
                          SMALL COMPANY VALUE PORTFOLIO
                                 VALUE PORTFOLIO
                           EMERGING MARKETS PORTFOLIO
                         INTERNATIONAL EQUITY PORTFOLIO
                             JAPAN GROWTH PORTFOLIO

This Statement of Additional Information provides information about Warburg
Pincus Institutional Fund, Inc. (the "Fund"), relating to the Post-Venture
Capital, Small Company Growth, Small Company Value and Value Portfolios (each a
"U.S. Portfolio" and collectively the "U.S. Portfolios") and relating to the
Emerging Markets, International Equity and Japan Growth Portfolios (each an
"International Portfolio," collectively, the "International Portfolios" and
together with the U.S. Portfolios, the "Portfolios") that supplements
information contained in the Prospectus for the U.S. Portfolios and the
Prospectus for the International Portfolios (collectively, the "Prospectuses"),
each dated February 22, 1999.

The Fund's audited Annual Report dated October 31, 1998, which either
accompanies this Statement of Additional Information or has previously been
provided to the investor to whom this Statement of Additional Information is
being sent, is incorporated herein by reference.

This Statement of Additional Information is not itself a Prospectus and no
investment in shares of the Portfolios should be made solely upon the
information contained herein. Copies of the Fund's Prospectuses, Annual Report
and information regarding each Portfolio's current performance may be obtained
by writing or telephoning:







                                 Warburg Pincus
                                  P.O. Box 9030
                              Boston, MA 02205-9030
                                 1-800-222-8977



<PAGE>   80


                                    CONTENTS

<TABLE>
<CAPTION>
                                                                                                      Page
<S>                                                                                                    <C>
INVESTMENT OBJECTIVES AND POLICIES......................................................................1

   Options on Securities and Securities Indices and Futures and Currency Exchange Transactions..........1
      Securities Options................................................................................1
      Securities Index Options..........................................................................4
      OTC Options.......................................................................................5
      Currency Exchange Transactions....................................................................5
      Forward Currency Contracts........................................................................6
      Currency Options..................................................................................6
      Currency Hedging..................................................................................6
   Futures Activities...................................................................................7
      Futures Contracts.................................................................................8
      Options on Futures Contracts......................................................................9
   Hedging Generally....................................................................................9
   Swaps...............................................................................................10
   Asset Coverage for Forward Contracts, Options, Futures and Options on Futures and Swaps.............11
   Foreign Investments.................................................................................11
      Foreign Currency Exchange........................................................................12
      Information......................................................................................12
      Political Instability............................................................................12
      Foreign Markets..................................................................................12
      Increased Expenses...............................................................................13
      Privatizations...................................................................................13
      Foreign Debt Securities..........................................................................13
      Brady Bonds......................................................................................14
      Depositary Receipts..............................................................................14
      Emerging Markets.................................................................................14
      Euro Conversion..................................................................................14
   Japan and Its Securities Markets....................................................................15
      Domestic Politics................................................................................15
      Economic Background..............................................................................15
      Securities Markets...............................................................................18
      Other Factors....................................................................................19
   U.S. Government Securities..........................................................................19
</TABLE>


<PAGE>   81

<TABLE>
<CAPTION>
                                                                                                      Page
<S>                                                                                                    <C>    
   Money Market Obligations............................................................................20
      Repurchase Agreements............................................................................20
      Money Market Mutual Funds........................................................................20
   Debt Securities.....................................................................................21
      Below Investment Grade Securities................................................................21
      Structured Securities............................................................................23
      Mortgage-Backed Securities.......................................................................23
      Asset-Backed Securities..........................................................................24
      Structured Notes, Bonds or Debentures............................................................24
      Loan Participations and Assignments..............................................................25
   Temporary Defensive Strategies......................................................................25
   Securities of Other Investment Companies............................................................26
   Lending of Portfolio Securities.....................................................................26
   When-Issued Securities and Delayed-Delivery Transactions............................................26
   Short Sales.........................................................................................27
      Short Sales Against the Box......................................................................28
   Convertible Securities..............................................................................28
   Warrants............................................................................................28                 
   Non-Publicly Traded and Illiquid Securities.........................................................29
      Rule 144A Securities.............................................................................30
   Emerging Growth and Smaller Capitalization Companies; Unseasoned Issuers............................30
   Special Situation Companies.........................................................................30
   Private Funds.......................................................................................31
   Borrowing...........................................................................................32
   Reverse Repurchase Agreements and Dollar Rolls......................................................33
   REITs...............................................................................................33
   Non-Diversified Status..............................................................................34
   Investment Policies of the Emerging Markets Portfolio Only..........................................34
      Stand-By Commitments.............................................................................34
</TABLE>



                                       ii
<PAGE>   82


<TABLE>
<CAPTION>
                                                                                                      Page
<S>                                                                                                   <C>
      General..........................................................................................35

INVESTMENT RESTRICTIONS................................................................................36

      All Portfolios...................................................................................36
      International Equity Portfolio...................................................................36
      Small Company Growth, Value and Emerging Markets Portfolios......................................38
      Post-Venture Capital, Small Company Value and Japan Growth Portfolios............................39

PORTFOLIO VALUATION....................................................................................41

   Private Funds.......................................................................................42

PORTFOLIO TRANSACTIONS.................................................................................42


PORTFOLIO TURNOVER.....................................................................................45


MANAGEMENT OF THE FUND.................................................................................45

   Officers and Board of Directors.....................................................................45
   Portfolio Managers..................................................................................49
      Post-Venture Capital Portfolio...................................................................49
      Small Company Growth Portfolio...................................................................50
      Small Company Value Portfolio....................................................................50
      Value Portfolio..................................................................................50
      International Equity Growth Portfolio............................................................50
      Emerging Markets Portfolio.......................................................................51
      Japan Growth Portfolio...........................................................................52
   Investment Advisers and Co-Administrators...........................................................52
   Custodians and Transfer Agent.......................................................................55
   Distributor.........................................................................................55
   Organization of the Fund............................................................................55

ADDITIONAL PURCHASE AND REDEMPTION INFORMATION.........................................................56


EXCHANGE PRIVILEGE.....................................................................................56


ADDITIONAL INFORMATION CONCERNING TAXES................................................................57

   The Portfolios and Their Investments................................................................57
   Passive Foreign Investment Companies................................................................59
   Dividends and Distributions.........................................................................60
   Sales of Shares.....................................................................................61
   Foreign Taxes.......................................................................................61
   Backup Withholding..................................................................................62
   Notices.............................................................................................62
</TABLE>



                                      iii
<PAGE>   83

<TABLE>
<CAPTION>
                                                                                                      Page
<S>                                                                                                   <C>
   Other Taxation......................................................................................62

DETERMINATION OF PERFORMANCE...........................................................................63


INDEPENDENT ACCOUNTANTS AND COUNSEL....................................................................66


MISCELLANEOUS..........................................................................................67


FINANCIAL STATEMENTS...................................................................................69

Appendix -- Description of Ratings....................................................................A-1
</TABLE>




                                       iv
<PAGE>   84


                       INVESTMENT OBJECTIVES AND POLICIES

               The following information supplements the descriptions of each
Portfolio's investment objective and policies in the Prospectuses. There are no
assurances that the Portfolios will achieve their investment objectives.

               The investment objective of the Small Company Value and
International Equity Portfolios is long-term capital appreciation.

               The investment objective of the Small Company Growth and Emerging
Markets Portfolios is capital growth.

               The investment objective of each of the Post-Venture Capital and
Japan Growth Portfolios is long-term growth of capital.

               The investment objective of the Value Portfolio is total return.

               Unless otherwise indicated, all of the Portfolios are permitted,
but not obligated, to engage in the following investment strategies, subject to
any percentage limitations set forth below.

               The Portfolios are not obligated to pursue any of the following
strategies and do not represent that these techniques are available now or will
be available at any time in the future.

               Options on Securities and Securities Indices and Currency
Exchange Transactions.

               Each Portfolio may purchase and write (sell) options on
securities, securities indices and currencies for hedging purposes or to
increase total return. Up to 25% of the Portfolio's total assets may be at risk
in connection with investing in options on securities, securities indices and,
if applicable, currencies. The amount of assets considered to be "at risk" in
these transactions is, in the case of purchasing options, the amount of the
premium paid, and, in the case of writing options, the value of the underlying
obligation.

               Securities Options. Each Portfolio may write covered put and call
options on stock and debt securities and each Portfolio may purchase such
options that are traded on foreign and U.S. exchanges, as well as OTC options. A
Portfolio realizes fees (referred to as "premiums") for granting the rights
evidenced by the options it has written. A put option embodies the right of its
purchaser to compel the writer of the option to purchase from the option holder
an underlying security at a specified price for a specified time period or at a
specified time. In contrast, a call option embodies the right of its purchaser
to compel the writer of the option to sell to the option holder an underlying
security at a specified price for a specified time period or at a specified
time.

               The potential loss associated with purchasing an option is
limited to the premium paid, and the premium would partially offset any gains
achieved from its use. However, for an option writer the exposure to adverse
price movements in the underlying



<PAGE>   85


security or index is potentially unlimited during the exercise period. Writing
securities options may result in substantial losses to a Portfolio, force the
sale or purchase of portfolio securities at inopportune times or at less
advantageous prices, limit the amount of appreciation the Portfolio could
realize on its investments or require the Portfolio to hold securities it would
otherwise sell.

               The principal reason for writing covered options on a security is
to attempt to realize, through the receipt of premiums, a greater return than
would be realized on the securities alone. In return for a premium, a Portfolio
as the writer of a covered call option forfeits the right to any appreciation in
the value of the underlying security above the strike price for the life of the
option (or until a closing purchase transaction can be effected). A Portfolio
that writes call options retains the risk of an increase in the price of the
underlying security. The size of the premiums that the Portfolio may receive may
be adversely affected as new or existing institutions, including other
investment companies, engage in or increase their option-writing activities.

               If security prices rise, a put writer would generally expect to
profit, although its gain would be limited to the amount of the premium it
received. If security prices remain the same over time, it is likely that the
writer will also profit, because it should be able to close out the option at a
lower price. If security prices decline, the put writer would expect to suffer a
loss. This loss may be less than the loss from purchasing the underlying
instrument directly to the extent that the premium received offsets the effects
of the decline.

               In the case of options written by a Portfolio that are deemed
covered by virtue of the Portfolio's holding convertible or exchangeable
preferred stock or debt securities, the time required to convert or exchange and
obtain physical delivery of the underlying common stock with respect to which
the Portfolio has written options may exceed the time within which the Portfolio
must make delivery in accordance with an exercise notice. In these instances,
the Portfolio may purchase or temporarily borrow the underlying securities for
purposes of physical delivery. By so doing, the Portfolio will not bear any
market risk, since the Portfolio will have the absolute right to receive from
the issuer of the underlying security an equal number of shares to replace the
borrowed securities, but the Portfolio may incur additional transaction costs or
interest expenses in connection with any such purchase or borrowing.

               Additional risks exist with respect to certain of the securities
for which a Portfolio may write covered call options. For example, if a
Portfolio writes covered call options on mortgage-backed securities, the
mortgage-backed securities that it holds as cover may, because of scheduled
amortization or unscheduled prepayments, cease to be sufficient cover. If this
occurs, the Portfolio will compensate for the decline in the value of the cover
by purchasing an appropriate additional amount of mortgage-backed securities.

               Options written by a Portfolio will normally have expiration
dates between one and nine months from the date written. The exercise price of
the options may be below, equal to or above the market values of the underlying
securities at the times the options are written. In the case of call options,
these exercise prices are referred to as "in-the-money," "at-the-money" and
"out-of-the-money," respectively. The Portfolios (other than the Emerging
Markets Portfolio) may write (i) in-the-money call options when Warburg Pincus
Asset Management, Inc., the Portfolios' investment adviser ("Warburg"), expects
that the price of



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the underlying security will remain flat or decline moderately during the option
period, (ii) at-the-money call options when Warburg expects that the price of
the underlying security will remain flat or advance moderately during the option
period and (iii) out-of-the-money call options when Warburg expects that the
premiums received from writing the call option plus the appreciation in market
price of the underlying security up to the exercise price will be greater than
the appreciation in the price of the underlying security alone. In any of the
preceding situations, if the market price of the underlying security declines
and the security is sold at this lower price, the amount of any realized loss
will be offset wholly or in part by the premium received. Out-of-the-money,
at-the-money and in-the-money put options (the reverse of call options as to the
relation of exercise price to market price) may be used in the same market
environments that such call options are used in equivalent transactions. To
secure its obligation to deliver the underlying security when it writes a call
option, a Portfolio will be required to deposit in escrow the underlying
security or other assets in accordance with the rules of the Options Clearing
Corporation (the "Clearing Corporation") and of the securities exchange on which
the option is written.

               Prior to their expirations, put and call options may be sold in
closing sale or purchase transactions (sales or purchases by the Portfolio prior
to the exercise of options that it has purchased or written, respectively, of
options of the same series) in which the Portfolio may realize a profit or loss
from the sale. An option position may be closed out only where there exists a
secondary market for an option of the same series on a recognized securities
exchange or in the OTC market. When the Portfolio has purchased an option and
engages in a closing sale transaction, whether the Portfolio realizes a profit
or loss will depend upon whether the amount received in the closing sale
transaction is more or less than the premium the Portfolio initially paid for
the original option plus the related transaction costs. Similarly, in cases
where the Portfolio has written an option, it will realize a profit if the cost
of the closing purchase transaction is less than the premium received upon
writing the original option and will incur a loss if the cost of the closing
purchase transaction exceeds the premium received upon writing the original
option. The Portfolio may engage in a closing purchase transaction to realize a
profit, to prevent an underlying security with respect to which it has written
an option from being called or put or, in the case of a call option, to unfreeze
an underlying security (thereby permitting its sale or the writing of a new
option on the security prior to the outstanding option's expiration). The
obligation of the Portfolio under an option it has written would be terminated
by a closing purchase transaction (the Portfolio would not be deemed to own an
option as a result of the transaction). So long as the obligation of the
Portfolio as the writer of an option continues, the Portfolio may be assigned an
exercise notice by the broker-dealer through which the option was sold,
requiring the Portfolio to deliver the underlying security against payment of
the exercise price. This obligation terminates when the option expires or the
Portfolio effects a closing purchase transaction. A Portfolio cannot effect a
closing purchase transaction with respect to an option once it has been assigned
an exercise notice.

               There is no assurance that sufficient trading interest will exist
to create a liquid secondary market on a securities exchange for any particular
option or at any particular time, and for some options no such secondary market
may exist. A liquid secondary market in an option may cease to exist for a
variety of reasons. In the past, for example, higher than anticipated trading
activity or order flow or other unforeseen events have at times rendered



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certain of the facilities of the Clearing Corporation and various securities
exchanges inadequate and resulted in the institution of special procedures, such
as trading rotations, restrictions on certain types of orders or trading halts
or suspensions in one or more options. There can be no assurance that similar
events, or events that may otherwise interfere with the timely execution of
customers' orders, will not recur. In such event, it might not be possible to
effect closing transactions in particular options. Moreover, a Portfolio's
ability to terminate options positions established in the OTC market may be more
limited than for exchange-traded options and may also involve the risk that
securities dealers participating in OTC transactions would fail to meet their
obligations to the Portfolio. The Portfolio, however, intends to purchase OTC
options only from dealers whose debt securities, as determined by Warburg, are
considered to be investment grade. If, as a covered call option writer, the
Portfolio is unable to effect a closing purchase transaction in a secondary
market, it will not be able to sell the underlying security and would continue
to be at market risk on the security.

               Securities exchanges generally have established limitations
governing the maximum number of calls and puts of each class which may be held
or written, or exercised within certain time periods by an investor or group of
investors acting in concert (regardless of whether the options are written on
the same or different securities exchanges or are held, written or exercised in
one or more accounts or through one or more brokers). It is possible that the
Fund or a Portfolio and other clients of Warburg and certain of its affiliates
may be considered to be such a group. A securities exchange may order the
liquidation of positions found to be in violation of these limits and it may
impose certain other sanctions. These limits may restrict the number of options
a Portfolio will be able to purchase on a particular security.

               Securities Index Options. Each Portfolio may purchase (in the
case of each of the Post-Venture Capital, the Small Company Growth, the Small
Company Value and the Value Portfolios, with respect to up to 10% of its total
assets) and each Portfolio (other than the Emerging Markets Portfolio) may write
exchange-listed and OTC put and call options on securities indexes. A securities
index measures the movement of a certain group of securities by assigning
relative values to the securities included in the index, fluctuating with
changes in the market values of the securities included in the index. Some
securities index options are based on a broad market index, such as the NYSE
Composite Index, or a narrower market index such as the Standard & Poor's 100.
Indexes may also be based on a particular industry or market segment.

               Options on securities indexes are similar to options on
securities except that (i) the expiration cycles of securities index options are
monthly, while those of securities options are currently quarterly, and (ii) the
delivery requirements are different. Instead of giving the right to take or make
delivery of securities at a specified price, an option on a securities index
gives the holder the right to receive a cash "exercise settlement amount" equal
to (a) the amount, if any, by which the fixed exercise price of the option
exceeds (in the case of a put) or is less than (in the case of a call) the
closing value of the underlying index on the date of exercise, multiplied by (b)
a fixed "index multiplier." Receipt of this cash amount will depend upon the
closing level of the securities index upon which the option is based being
greater than, in the case of a call, or less than, in the case of a put, the
exercise price of the index and the exercise price of the option times a
specified multiple. The writer of the option is obligated, in return for the
premium received, to make delivery of this amount. Securities




                                       4
<PAGE>   88


index options may be offset by entering into closing transactions as described
above for securities options.

               OTC Options. The Portfolios may purchase OTC or dealer options or
sell covered OTC options. Unlike exchange-listed options where an intermediary
or clearing corporation, such as the Clearing Corporation, assures that all
transactions in such options are properly executed, the responsibility for
performing all transactions with respect to OTC options rests solely with the
writer and the holder of those options. A listed call option writer, for
example, is obligated to deliver the underlying securities to the clearing
organization if the option is exercised, and the clearing organization is then
obligated to pay the writer the exercise price of the option. If a Portfolio
were to purchase a dealer option, however, it would rely on the dealer from whom
it purchased the option to perform if the option were exercised. If the dealer
fails to honor the exercise of the option by the Portfolio, the Portfolio would
lose the premium it paid for the option and the expected benefit of the
transaction.

               Exchange-traded options generally have a continuous liquid market
while OTC or dealer options do not. Consequently, the Portfolio will generally
be able to realize the value of a dealer option it has purchased only by
exercising it or reselling it to the dealer who issued it. Similarly, when the
Portfolio writes a dealer option, it generally will be able to close out the
option prior to its expiration only by entering into a closing purchase
transaction with the dealer to which the Portfolio originally wrote the option.
Although the Portfolios will seek to enter into dealer options only with dealers
who will agree to and that are expected to be capable of entering into closing
transactions with the Portfolios, there can be no assurance that the Portfolio
will be able to liquidate a dealer option at a favorable price at any time prior
to expiration. The inability to enter into a closing transaction may result in
material losses to a Portfolio. Until the Portfolio, as a covered OTC call
option writer, is able to effect a closing purchase transaction, it will not be
able to liquidate securities (or other assets) used to cover the written option
until the option expires or is exercised. This requirement may impair the
Portfolio's ability to sell portfolio securities or, with respect to currency
options, currencies at a time when such sale might be advantageous.

               Currency Exchange Transactions. The value in U.S. dollars of the
assets of a Portfolio that are invested in foreign securities may be affected
favorably or unfavorably by changes in a variety of factors not applicable to
investment in U.S. securities, and the Portfolio may incur costs in connection
with conversion between various currencies. Currency exchange transactions may
be from any non-U.S. currency into U.S. dollars or into other appropriate




                                       5
<PAGE>   89


currencies. Each Portfolio will conduct its currency exchange transactions (i)
on a spot (i.e., cash) basis at the rate prevailing in the currency exchange
market, (ii) through entering into futures contracts or options on such
contracts (as described above), (iii) through entering into forward contracts to
purchase or sell currency or (iv) by purchasing exchange-traded currency
options.

               Forward Currency Contracts. A forward currency contract involves
an obligation 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 as agreed upon by
the parties, at a price set at the time of the contract. These contracts are
entered into in the interbank market conducted directly between currency traders
(usually large commercial banks and brokers) and their customers. Forward
currency contracts are similar to currency futures contracts, except that
futures contracts are traded on commodities exchanges and are standardized as to
contract size and delivery date.

               At or before the maturity of a forward contract, the Portfolio
may either sell a portfolio security and make delivery of the currency, or
retain the security and fully or partially offset its contractual obligation to
deliver the currency by negotiating with its trading partner to enter into an
offsetting transaction. If the Portfolio retains the portfolio security and
engages in an offsetting transaction, the Portfolio, at the time of execution of
the offsetting transaction, will incur a gain or a loss to the extent that
movement has occurred in forward contract prices.

               Currency Options. The Portfolios may purchase exchange-traded put
and call options on foreign currencies. Put options convey the right to sell the
underlying currency at a price which is anticipated to be higher than the spot
price of the currency at the time the option is exercised. Call options convey
the right to buy the underlying currency at a price which is expected to be
lower than the spot price of the currency at the time the option is exercised.

               Currency Hedging. The Portfolios' currency hedging will be
limited to hedging involving either specific transactions or portfolio
positions. Transaction hedging is the purchase or sale of forward currency with
respect to specific receivables or payables of a Portfolio generally accruing in
connection with the purchase or sale of its portfolio securities. Position
hedging is the sale of forward currency with respect to portfolio security
positions. A Portfolio may not position hedge to an extent greater than the
aggregate market value (at the time of entering into the hedge) of the hedged
securities.

               A decline in the U.S. dollar value of a foreign currency in which
the Portfolio's securities are denominated will reduce the U.S. dollar value of
the securities, even if their value in the foreign currency remains constant.
The use of currency hedges does not eliminate fluctuations in the underlying
prices of the securities, but it does establish a rate of exchange that can be
achieved in the future. For example, in order to protect against diminutions in
the U.S. dollar value of non-dollar denominated securities it holds, a Portfolio
may purchase foreign currency put options. If the value of the foreign currency
does decline, the Portfolio will have the right to sell the currency for a fixed
amount in dollars and will thereby offset, in whole or in part, the adverse
effect on the U.S. dollar value of its securities that otherwise would have
resulted. Conversely, if a rise in the U.S. dollar value of a currency in which
securities to be acquired are denominated is projected, thereby potentially
increasing the cost



                                       6

<PAGE>   90


of the securities, the Portfolio may purchase call options on the particular
currency. The purchase of these options could offset, at least partially, the
effects of the adverse movements in exchange rates. The benefit to the Portfolio
derived from purchases of currency options, like the benefit derived from other
types of options, will be reduced by premiums and other transaction costs.
Because transactions in currency exchange are generally conducted on a principal
basis, no fees or commissions are generally involved. Currency hedging involves
some of the same risks and considerations as other transactions with similar
instruments. Although currency hedges limit the risk of loss due to a decline in
the value of a hedged currency, at the same time, they also limit any potential
gain that might result should the value of the currency increase. If a
devaluation is generally anticipated, the Portfolio may not be able to contract
to sell a currency at a price above the devaluation level it anticipates.

               While the values of currency futures and options on futures,
forward currency contracts and currency options may be expected to correlate
with exchange rates, they will not reflect other factors that may affect the
value of the Portfolio's investments and a currency hedge may not be entirely
successful in mitigating changes in the value of the Portfolio's investments
denominated in that currency. A currency hedge, for example, should protect a
Yen-denominated bond against a decline in the Yen, but will not protect the
Portfolio against a price decline if the issuer's creditworthiness deteriorates.

               Futures Activities. Each Portfolio may enter into foreign
currency, interest rate and securities index futures contracts and purchase and
write (sell) related options traded on exchanges designated by the Commodity
Futures Trading Commission (the "CFTC") or consistent with CFTC regulations on
foreign exchanges. These futures contracts are standardized contracts for the
future delivery of foreign currency or an interest rate sensitive security or,
in the case of stock index and certain other futures contracts, a cash
settlement with reference to a specified multiplier times the change in the
specified index, exchange rate or interest rate. An option on a futures contract
gives the purchaser the right, in return for the premium paid, to assume a
position in a futures contract. These transactions may be entered into for "bona
fide hedging" purposes as defined in CFTC regulations and other permissible
purposes including hedging against changes in the value of portfolio securities
due to anticipated changes in currency values, interest rates and/or market
conditions and increasing return. Aggregate initial margin and premiums
(discussed below) required to establish positions other than those considered to
be "bona fide hedging" by the CFTC will not exceed 5% of a Portfolio's net asset
value after taking into account unrealized profits and unrealized losses on any
such contracts it has entered into. The Portfolios reserve the right to engage
in transactions involving futures contracts and options on futures contracts to
the extent allowed by CFTC regulations in effect from time to time and in
accordance with a Portfolio's policies. There is no overall limit on the
percentage of Portfolio assets that may be at risk with respect to futures
activities.




                                       7
<PAGE>   91




               Futures Contracts. A foreign currency futures contract provides
for the future sale by one party and the purchase by the other party of a
certain amount of a specified non-U.S. currency at a specified price, date, time
and place. An interest rate futures contract provides for the future sale by one
party and the purchase by the other party of a certain amount of a specific
interest rate sensitive financial instrument (debt security) at a specified
price, date, time and place. Securities indexes are capitalization weighted
indexes which reflect the market value of the securities represented in the
indexes. A securities index futures contract is an agreement to be settled by
delivery of an amount of cash equal to a specified multiplier times the
difference between the value of the index at the close of the last trading day
on the contract and the price at which the agreement is made.

               No consideration is paid or received by a Portfolio upon entering
into a futures contract. Instead, the Portfolio is required to segregate with
its custodian an amount of cash or securities acceptable to the broker equal to
approximately 1% to 10% of the contract amount (this amount is subject to change
by the exchange on which the contract is traded, and brokers may charge a higher
amount). This amount is known as "initial margin" and is in the nature of a
performance bond or good faith deposit on the contract which is returned to the
Portfolio upon termination of the futures contract, assuming all contractual
obligations have been satisfied. The broker will have access to amounts in the
margin account if the Portfolio fails to meet its contractual obligations.
Subsequent payments, known as "variation margin," to and from the broker, will
be made daily as the currency, financial instrument or securities index
underlying the futures contract fluctuates, making the long and short positions
in the futures contract more or less valuable, a process known as
"marking-to-market." The Portfolios will also incur brokerage costs in
connection with entering into futures transactions.

               At any time prior to the expiration of a futures contract, a
Portfolio may elect to close the position by taking an opposite position, which
will operate to terminate the Portfolio's existing position in the contract.
Positions in futures contracts and options on futures contracts (described
below) may be closed out only on the exchange on which they were entered into
(or through a linked exchange). No secondary market for such contracts exists.
Although the Portfolios may enter into futures contracts only if there is an
active market for such contracts, there is no assurance that an active market
will exist at any particular time. Most futures exchanges limit the amount of
fluctuation permitted in futures contract prices during a single trading day.
Once the daily limit has been reached in a particular contract, no trades may be
made that day at a price beyond that limit or trading may be suspended for
specified periods during the day. It is possible that futures contract prices
could move to the daily limit for several consecutive trading days with little
or no trading, thereby preventing prompt liquidation of futures positions at an
advantageous price and subjecting a Portfolio to substantial losses. In such
event, and in the event of adverse price movements, the Portfolio would be
required to make daily cash payments of variation margin. In such situations, if
the Portfolio had insufficient cash, it might have to sell securities to meet
daily variation margin requirements at a time when it would be disadvantageous
to do so. In addition, if the transaction is entered into for hedging purposes,
in such circumstances the Portfolio may realize a loss on a futures contract or
option that is not offset by an increase in the value of the hedged position.
Losses incurred in futures transactions and the costs of these transactions will
affect the Portfolio's performance.




                                       8
<PAGE>   92




               Options on Futures Contracts. Each Portfolio may purchase and
write put and call options on foreign currency, interest rate and stock index
futures contracts and may enter into closing transactions with respect to such
options to terminate existing positions. There is no guarantee that such closing
transactions can be effected; the ability to establish and close out positions
on such options will be subject to the existence of a liquid market.

               An option on a currency, interest rate or securities index
futures contract, as contrasted with the direct investment in such a contract,
gives the purchaser the right, in return for the premium paid, to assume a
position in a futures contract at a specified exercise price at any time prior
to the expiration date of the option. The writer of the option is required upon
exercise to assume an offsetting futures position (a short position if the
option is a call and a long position if the option is a put). Upon exercise of
an option, the delivery of the futures position by the writer of the option to
the holder of the option will be accompanied by delivery of the accumulated
balance in the writer's futures margin account, which represents the amount by
which the market price of the futures contract exceeds, in the case of a call,
or is less than, in the case of a put, the exercise price of the option on the
futures contract. The potential loss related to the purchase of an option on a
futures contract is limited to the premium paid for the option (plus transaction
costs). Because the value of the option is fixed at the point of sale, there are
no daily cash payments by the purchaser to reflect changes in the value of the
underlying contract; however, the value of the option does change daily and that
change would be reflected in the net asset value of the Portfolio.

               Hedging Generally. In addition to entering into options and
futures transactions for other purposes, including generating current income to
offset expenses or increase return, each Portfolio may enter into these
transactions as hedges to reduce investment risk, generally by making an
investment expected to move in the opposite direction of a portfolio position. A
hedge is designed to offset a loss in a portfolio position with a gain in the
hedged position; at the same time, however, a properly correlated hedge will
result in a gain in the portfolio position being offset by a loss in the hedged
position. As a result, the use of options and futures transactions for hedging
purposes could limit any potential gain from an increase in the value of the
position hedged. In addition, the movement in the portfolio position hedged may
not be of the same magnitude as movement in the hedge. With respect to futures
contracts, since the value of portfolio securities will far exceed the value of
the futures contracts sold by the Portfolio, an increase in the value of the
futures contracts could only mitigate, but not totally offset, the decline in
the value of the Portfolio's assets.

               In hedging transactions based on an index, whether a Portfolio
will realize a gain or loss depends upon movements in the level of securities
prices in the stock market generally or, in the case of certain indexes, in an
industry or market segment, rather than movements in the price of a particular
security. The risk of imperfect correlation increases as the composition of the
Portfolio's portfolio varies from the composition of the index. In an effort to
compensate for imperfect correlation of relative movements in the hedged
position and the hedge, the Portfolio's hedge positions may be in a greater or
lesser dollar amount than the dollar amount of the hedged position. Such "over
hedging" or "under hedging" may adversely affect the Portfolio's net investment
results if market movements are not as anticipated when the hedge is
established. Securities index futures transactions may be subject to additional
correlation risks. First, all participants in the futures market are subject to
margin deposit and maintenance requirements. Rather than meeting additional
margin deposit



                                       9

<PAGE>   93


requirements, investors may close futures contracts through offsetting
transactions which would distort the normal relationship between the securities
index and futures markets. Secondly, from the point of view of speculators, the
deposit requirements in the futures market are less onerous than margin
requirements in the securities market. Therefore, increased participation by
speculators in the futures market also may cause temporary price distortions.
Because of the possibility of price distortions in the futures market and the
imperfect correlation between movements in the securities index and movements in
the price of securities index futures, a correct forecast of general market
trends by Warburg still may not result in a successful hedging transaction.

               A Portfolio will engage in hedging transactions only when deemed
advisable by Warburg, and successful use by the Portfolio of hedging
transactions will be subject to Warburg's ability to predict trends in currency,
interest rate or securities markets, as the case may be, and to predict
correctly movements in the directions of the hedge and the hedged position and
the correlation between them, which predictions could prove to be inaccurate.
This requires different skills and techniques than predicting changes in the
price of individual securities, and there can be no assurance that the use of
these strategies will be successful. Even a well-conceived hedge may be
unsuccessful to some degree because of unexpected market behavior or trends.
Losses incurred in hedging transactions and the costs of these transactions will
affect the Portfolio's performance.

               Swaps (Emerging Markets, International Equity and Japan Growth
Portfolios). The Emerging Markets, International Equity and Japan Growth
Portfolios may each enter into swaps relating to indexes, interest rates,
currencies and equity and debt interests of foreign issuers. A swap transaction
is an agreement between a Portfolio and a counterparty to act in accordance with
the terms of the swap contract. Index swaps involve the exchange by the
Portfolio with another party of the respective amounts payable with respect to a
notional principal amount related to one or more indexes. Interest rate swaps
involve the exchange by the Portfolios with another party of their respective
commitments to pay or receive interest, such as an exchange of fixed rate
payments for floating rate payments. Currency swaps involve the exchange of cash
flows on a notional amount of two or more currencies based on their relative
future values. An equity or debt swap is an agreement to exchange streams of
payments computed by reference to a notional amount based on the performance of
a securities index, a basket of securities or a single security. A Portfolio may
enter into these transactions for hedging purposes, such as to preserve a return
or spread on a particular investment or portion of its assets, to protect
against currency fluctuations, as a duration management technique or to protect
against any increase in the price of securities the Portfolio anticipates
purchasing at a later date. The Portfolios may also use these transactions for
speculative purposes to increase total return, such as to obtain the price
performance of a security without actually purchasing the security in
circumstances where, for example, the subject security is illiquid, is
unavailable for direct investment or available only on less attractive terms.
Swaps have risks associated with them, including possible default by the
counterparty to the transaction, illiquidity and, where swaps are used as
hedges, the risk that the use of a swap could result in losses greater than if
the swap had not been employed.

               A Portfolio will usually enter into swaps on a net basis, i.e.,
the two payment streams are netted out in a cash settlement on the payment date
or dates specified in the agreement, with the Portfolio receiving or paying, as
the case may be, only the net amount of



                                       10

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the two payments. Swaps do not involve the delivery of securities, other
underlying assets or principal. Accordingly, the risk of loss with respect to
swaps is limited to the net amount of payments that the Portfolio is
contractually obligated to make. If the counterparty to a swap defaults, the
Portfolio's risk of loss consists of the net amount of payments that the
Portfolio is contractually entitled to receive. Where swaps are entered into for
good faith hedging purposes, Warburg believes such obligations do not constitute
senior securities under the Investment Company Act of 1940, as amended (the
"1940 Act"), and, accordingly, will not treat them as being subject to a
Portfolio's borrowing restrictions. Where swaps are entered into for other than
hedging purposes, a Portfolio will segregate an amount of cash or liquid
securities having a value equal to the accrued excess of its obligations over
its entitlements with respect to each swap on a daily basis.

               Asset Coverage for Forward Contracts, Options, Futures and
Options on Futures and Swaps. Each Portfolio will comply with guidelines
established by the U.S. Securities and Exchange Commission (the "SEC") with
respect to coverage of forward currency contracts; options written by the
Portfolio on currencies, securities and indexes; currency, interest rate and
index futures contracts and options on these futures contracts and, in the case
of the Emerging Markets, International Equity and Japan Growth Portfolios,
swaps. These guidelines may, in certain instances, require segregation by the
Portfolio of cash or liquid securities with its custodian or a designated
sub-custodian to the extent the Portfolio's obligations with respect to these
strategies are not otherwise "covered" through ownership of the underlying
security, financial instrument or currency or by other portfolio positions or by
other means consistent with applicable regulatory policies. Segregated assets
cannot be sold or transferred unless equivalent assets are substituted in their
place or it is no longer necessary to segregate them. As a result, there is a
possibility that segregation of a large percentage of a Portfolio's assets could
impede portfolio management or the Portfolio's ability to meet redemption
requests or other current obligations.

               For example, a call option written by the Portfolio on securities
may require the Portfolio to hold the securities subject to the call (or
securities convertible into the securities without additional consideration) or
to segregate assets (as described above) sufficient to purchase and deliver the
securities if the call is exercised. A call option written by the Portfolio on
an index may require the Portfolio to own portfolio securities that correlate
with the index or to segregate assets (as described above) equal to the excess
of the index value over the exercise price on a current basis. A put option
written by the Portfolio may require the Portfolio to segregate assets (as
described above) equal to the exercise price. The Portfolio could purchase a put
option if the strike price of that option is the same or higher than the strike
price of a put option sold by the Portfolio. If the Portfolio holds a futures or
forward contract, the Portfolio could purchase a put option on the same futures
or forward contract with a strike price as high or higher than the price of the
contract held. The Portfolio may enter into fully or partially offsetting
transactions so that its net position, coupled with any segregated assets (equal
to any remaining obligation), equals its net obligation. Asset coverage may be
achieved by other means when consistent with applicable regulatory policies.

               Foreign Investments. Each of the International Portfolios will
invest, under normal market conditions, at least 65% of its total assets in
securities of issuers located outside the United States. The U.S. Portfolios
may invest, up to 20% of its total assets in the case of the Post-Venture
Capital and Value Portfolios and up to 10% of its total assets in the case of
the Small Company Growth and Small Company Value Portfolios, in securities of
issuers located outside the United States. Investors should recognize that
investing in foreign companies involves certain risks, including those
discussed below, which are in addition to those associated with investing in
U.S. issuers. Individual foreign economies may differ favorably or unfavorably
from the U.S. economy in such respects as growth of gross national



                                       11

<PAGE>   95


product, rate of inflation, capital reinvestment, resource self-sufficiency and
balance of payments positions. A Portfolio may invest in securities of foreign
governments (or agencies or instrumentalities thereof), and many, if not all, of
the foregoing considerations apply to such investments as well.

               Foreign Currency Exchange. Since the International Portfolios
will, and the U.S. Portfolios may, be investing in securities denominated in
currencies other than the U.S. dollar, and since a Portfolio may temporarily
hold funds in bank deposits or other money market investments denominated in
foreign currencies, each Portfolio may be affected favorably or unfavorably by
exchange control regulations or changes in the exchange rate between such
currencies and the dollar. A change in the value of a foreign currency relative
to the U.S. dollar will result in a corresponding change in the dollar value of
a Portfolio's assets denominated in that foreign currency. Changes in foreign
currency exchange rates may also affect the value of dividends and interest
earned, gains and losses realized on the sale of securities and net investment
income and gains, if any, to be distributed to shareholders by a Portfolio with
respect to its foreign investments. Unless otherwise contracted, the rate of
exchange between the U.S. dollar and other currencies is determined by the
forces of supply and demand in the foreign exchange markets. Changes in the
exchange rate may result over time from the interaction of many factors
directly or indirectly affecting economic and political conditions in the
United States and a particular foreign country, including economic and
political developments in other countries. Governmental intervention may also
play a significant role. National governments rarely voluntarily allow their
currencies to float freely in response to economic forces. Sovereign
governments use a variety of techniques, such as intervention by a country's
central bank or imposition of regulatory controls or taxes, to affect the
exchange rates of their currencies. A Portfolio may use hedging techniques with
the objective of protecting against loss through the fluctuation of the value
of foreign currencies against the U.S. dollar, particularly the forward market
in foreign exchange, currency options and currency futures.

               Information. The majority of the foreign securities held by a
Portfolio will not be registered with, nor the issuers thereof be subject to
reporting requirements of, the SEC. Accordingly, there may be less publicly
available information about the securities and about the foreign company or
government issuing them than is available about a domestic company or government
entity. Foreign companies are generally subject to financial reporting
standards, practices and requirements that are either not uniform or less
rigorous than those applicable to U.S. companies.

               Political Instability. With respect to some foreign countries,
there is the possibility of expropriation or confiscatory taxation, limitations
on the removal of funds or other assets of the Portfolio, political or social
instability, or domestic developments which could affect U.S. investments in
those and neighboring countries.

               Foreign Markets. Securities of some foreign companies are less
liquid and their prices are more volatile than securities of comparable U.S.
companies. Certain foreign countries are known to experience long delays between
the trade and settlement dates of



                                       12

<PAGE>   96


securities purchased or sold, which may result in increased exposure to market
and foreign exchange fluctuations and increased illiquidity.

               Increased Expenses. The operating expenses of the International
Portfolios (and, to the extent they invest in foreign securities, the U.S.
Portfolios) can be expected to be higher than that of an investment company
investing exclusively in U.S. securities, since the expenses of the Portfolios
associated with foreign investing, such as custodial costs, valuation costs and
communication costs, as well as, in the case of the International Portfolios,
the rate of the investment advisory fees, though similar to such expenses of
some other funds investing internationally, are higher than those costs incurred
by other investment companies.

               Privatizations . Each Portfolio may invest in privatizations
(i.e. foreign government programs of selling interests in government-owned or
controlled enterprises). The ability of U.S. entities, such as the Portfolios,
to participate in privatizations may be limited by local law, or the terms for
participation may be less advantageous than for local investors. There can be no
assurance that privatization programs will be available or successful. The
International Equity and Emerging Markets Portfolios could invest to a
significant extent in privatizations.

               Foreign Debt Securities. The returns on foreign debt securities
reflect interest rates and other market conditions prevailing in those countries
and the effect of gains and losses in the denominated currencies against the
U.S. dollar, which have had a substantial impact on investment in foreign fixed
income securities. The relative performance of various countries' fixed income
markets historically has reflected wide variations relating to the unique
characteristics of each country's economy. Year-to-year fluctuations in certain
markets have been significant, and negative returns have been experienced in
various markets from time to time.

               The foreign debt securities in which a Portfolio may invest
generally consist of obligations issued or backed by national, state or
provincial governments or similar political subdivisions or central banks in
foreign countries. Foreign debt securities also include debt obligations of
supranational entities, which include international organizations designated or
backed by governmental entities to promote economic reconstruction or
development, international banking institutions and related government agencies.
Examples include the International Bank for Reconstruction and Development (the
"World Bank"), the European Coal and Steel Community, the Asian Development Bank
and the InterAmerican Development Bank.

               Foreign government securities also include debt securities of
"quasi-government agencies" and debt securities denominated in multinational
currency units of an issuer (including supranational issuers). Debt securities
of quasi-governmental agencies are issued by entities owned by either a
national, state or equivalent government or are obligations of a political unit
that is not backed by the national government's full faith and credit and
general taxing powers. An example of a multinational currency unit is the
European Currency Unit ("ECU"). An ECU represents specified amounts of the
currencies of certain member states of the European Economic Community. The
specific amounts of currencies comprising the ECU




                                       13
<PAGE>   97


may be adjusted by the Council of Ministers of the European Community to reflect
changes in relative values of the underlying currencies.

               Brady Bonds. The Portfolio may invest in so-called "Brady Bonds,"
which have been issued by Costa Rica, Mexico, Uruguay and Venezuela and which
may be issued by other Latin American countries. Brady Bonds are issued as part
of a debt restructuring in which the bonds are issued in exchange for cash and
certain of the country's outstanding commercial bank loans. Investors should
recognize that Brady Bonds do not have a long payment history. Brady Bonds may
be collateralized or uncollateralized, are issued in various currencies
(primarily the U.S. dollar) and are actively traded in the over-the-counter
("OTC") secondary market for debt of Latin American issuers. In light of the
history of commercial bank loan defaults by Latin American public and private
entities, investments in Brady Bonds may be viewed as speculative. The
International Equity and Emerging Markets Portfolios could invest to a
significant extent in Brady Bonds.

               Depositary Receipts. Certain of the above risks may be involved
with ADRs, European Depositary Receipts ("EDRs") and International Depositary
Receipts ("IDRs"), instruments that evidence ownership of underlying securities
issued by a foreign corporation. ADRs, EDRs and IDRs may not necessarily be
denominated in the same currency as the securities whose ownership they
represent. ADRs are typically issued by a U.S. bank or trust company. EDRs
(sometimes referred to as Continental Depositary Receipts) are issued in Europe
and IDRs (sometimes referred to as Global Depositary Receipts) are issued
outside the United States, each typically by non-U.S. banks and trust companies.
The risks associated with investing in securities of non-U.S. issuers are
generally heightened for investments in securities of issuers in emerging
markets.

               Emerging Markets. Each Portfolio may, and the Emerging Markets
Portfolio will, invest in securities of issuers located in less developed
countries considered to be "emerging markets." Investing in securities of
issuers located in emerging markets involves not only the risks described above
with respect to investing in foreign securities, but also other risks, including
exposure to economic structures that are generally less diverse and mature than,
and to political systems that can be expected to have less stability than, those
of developed countries. For example, many investments in emerging markets
experienced significant declines in value due to political and currency
volatility in emerging markets countries during the latter part of 1997. Other
characteristics of emerging markets that may affect investment there include
certain national policies that may restrict investment by foreigners in issuers
or industries deemed sensitive to relevant national interests and the absence of
developed legal structures governing private and foreign investments and private
property. The typically small size of the markets for securities of issuers
located in emerging markets and the possibility of a low or nonexistent volume
of trading in those securities may also result in a lack of liquidity and in
price volatility of those securities.

               Euro Conversion. The introduction of a single European currency,
the euro, on January 1, 1999 for participating European nations in the Economic
and Monetary Union presents unique risks and uncertainties for investors in
those countries, including (i) the functioning of the payment and operational
systems of banks and other financial institutions; (ii) the creation of
suitable clearing and settlement payment schemes for the euro; (iii) the
fluctuation of the euro relative to non-euro currencies during the transition



                                       14

<PAGE>   98


period from January 1, 1999 to December 31, 2000 and beyond; and (iv) whether
the interest rate, tax and labor regimes of the European countries participating
in the euro will converge over time. Further, the conversion of the currencies
of other Economic Monetary Union countries, such as the United Kingdom, and the
admission of other countries, including Central and Eastern European countries,
to the Economic and Monetary Union could adversely affect the euro. These or
other factors may cause market disruptions and could adversely affect the value
of foreign securities and currencies held by the Portfolios.

Japan and Its Securities Markets

               The Japan Growth Portfolio (as well as the other International
Portfolios, each of which may invest a significant portion of its assets in
Japanese securities), will be subject to general economic and political
conditions in Japan. In addition to the considerations discussed above, these
include future political and economic developments, the possible imposition of,
or changes in, exchange controls or other Japanese governmental laws or
restrictions applicable to such investments, diplomatic developments, political
or social unrest and natural disasters.

               THE INFORMATION SET FORTH IN THIS SECTION HAS BEEN EXTRACTED FROM
VARIOUS GOVERNMENTAL PUBLICATIONS AND OTHER SOURCES. THE FUND MAKES NO
REPRESENTATION AS TO THE ACCURACY OF THE INFORMATION, NOR HAS THE FUND ATTEMPTED
TO VERIFY IT. FURTHERMORE, NO REPRESENTATION IS MADE THAT ANY CORRELATION EXISTS
BETWEEN JAPAN OR ITS ECONOMY IN GENERAL AND THE PERFORMANCE OF ANY PORTFOLIO.

Domestic Politics

               Japan has a parliamentary form of government. The legislative
power is vested in the Japanese Diet, which consists of a House of
Representatives (lower house) and a House of Councillors (upper house). Various
political parties are represented in the Diet, including the conservative
Liberal Democratic Party ("LDP"), which until August 1993, had been in power
nationally since its formation in 1955. The LDP ceased to have a majority of the
lower house in June 1993, when certain members of the lower house left the LDP
and formed two new political parties. After several years of political unrest,
the LDP elected Ryutaro Hashimoto in August 1995, the minister for international
trade and industry, as its new leader, and in January 1996, he became prime
minister. Mr. Hashimoto dissolved the Diet and called a general election in
October 1996, in which the LDP won 239 of the 500 lower-house seats. As a
result, LDP members filled all the new cabinet seats for the first time in three
years. The LDP, along with its former coalition partners (the Social Democratic
Party and Shinto Sakigake) agreed to continue to work together, but only in
loose alliance. Meanwhile, many dissatisfied Diet members from the main
opposition party have left the party to join the LDP. By September 1997, enough
Diet members from the main opposition party and other parties had defected to
the LDP for the LDP to regain its simple majority in the lower house. In August
of 1998, Keizo Obuchi, foreign minister under Hashimoto, was elected to the
office of prime minister. Japan's continuing political instability may hamper
its ability to establish and maintain effective economic and fiscal policies,
and recent and future political developments may lead to changes in policy that
might adversely affect a Portfolio's investments.

Economic Background




                                       15
<PAGE>   99




               Generally. Since the end of World War II, Japan has experienced
significant economic development. Since the mid-1980's, Japan has become a major
creditor nation. With the exception of the periods associated with the oil
crises of the 1970's, Japan has generally experienced very low levels of
inflation. There is no guarantee, however, that these favorable trends will
continue.

               The Japanese government has called for a transformation of the
economy away from its high dependency on export-led growth towards greater
stimulation of the domestic economy. In addition, there has been a move toward
more economic liberalization and discounting in the consumer sector. These
shifts have already begun to take place and may cause disruption in the Japanese
economy.

               Strains in the system have also been one of the major causes of
Japan's economic weakness. The non-performing loans of financial institutions
have hampered their ability to take on risk, thus obstructing the flow of funds
into capital outlays as well as equities. The large commercial banks are having
to bear a heavy burden of the bad-debt problem (e.g., in accepting write-offs of
loans they have extended to distressed smaller institutions, in recapitalizing
failed institutions and in stepping up contributions to the Deposit Insurance
Corporation, an organization jointly established in 1971 by the government and
private financial institutions to protect depositors). While the banking system
appears to be making some progress in its attempt to deal with non-performing
assets, it is extremely difficult to gauge the true extent of the bad-debt
problem which could lead to a crisis in the banking system.

               Japan's economy is a market economy in which industry and
commerce are predominantly privately owned and operated. However, the Japanese
government is involved in establishing and meeting objectives for developing the
economy and improving the standard of living of the Japanese people.

               Japan is largely dependent upon foreign economies for raw
materials. For instance, almost all of its oil is imported, the majority from
the Middle East. In the past, oil prices have had a major impact on the domestic
economy, but more recently Japan has worked to reduce its dependence on oil by
encouraging energy conservation and use of alternative fuels. In addition, a
restructuring of industry, with emphasis shifting from basic industries to
processing and assembly-type industries, has contributed to the reduction of oil
consumption. However, there is no guarantee this favorable trend will continue.

               Economic Trends. The following tables set forth Japan's gross
domestic product and certain other economic indicators for the years shown.

                          GROSS DOMESTIC PRODUCT (GDP)
                                (yen in billions)


<TABLE>
<CAPTION>
                                  1998*         1997           1996         1995          1994   
                                  ----          ----           ----         ----          ----   
<S>                           <C>            <C>            <C>          <C>          <C>    
Consumption Expenditures
  Private...............      (Y)303,050     (Y)308,472     (Y)299,440   (Y)290,515   (Y)286,154 
  Government............          50,083         50,239         48,969       47,555       45,743 
Gross Fixed
  Capital Formation.....         133,044        143,217        148,190      136,792      137,291 
Increase (Decrease) in
  Stocks................             914            828          1,058          947           50 
</TABLE>



<TABLE>
<CAPTION>
                                  1993          1992          1991          1990     
                                  ----          ----          ----          ----     
<S>                           <C>            <C>            <C>          <C>    
Consumption Expenditures                                                           
  Private...............      (Y)278,703     (Y)272,294     (Y)261,891   (Y)249,288  
  Government............          44,771         43,262         41,356       38,807  
Gross Fixed                                                                        
  Capital Formation.....         140,433        143,525        143,998      136,467  
Increase (Decrease) in                                                             
  Stocks................             620          1,489          3,453        2,430  
</TABLE>
                                                                           
                              
                                       16


<PAGE>   100


<TABLE>
<CAPTION>
                                1998*          1997           1996         1995         1994   
                                ----           ----           ----         ----         ----   
<S>                           <C>            <C>            <C>          <C>          <C>    
Exports of Goods and
Services................       56,355         55,979         49,598       45,393       44,410      
Imports of Goods and
Services................       46,753         51,331         46,900       38,272       34,387      
GDP (Expenditures)......      499,191        507,403        500,356      482,930      479,260     
Change in GDP from
Preceding Year..........         (1.6)%          1.4%           3.6%         0.8%         0.8%      
</TABLE>




<TABLE>
<CAPTION>
                                1993           1992           1991         1990     
                                ----           ----           ----         ----     
<S>                           <C>            <C>            <C>          <C>    
Exports of Goods and           44,197         47,384         46,723       45,920   
Services................                                                           
Imports of Goods and           33,343         36,891         39,121       42,872   
Services................      475,381        471,064        458,299      430,040   
GDP (Expenditures)......                                                           
Change in GDP from                0.9%           2.8%           6.6%          --   
Preceding Year..........         
</TABLE>
                                 
     Source: International Monetary Fund, International Financial Statistics
- ------------------
[FN]
 *  Average of the first and second quarters of 1998.
</FN>


<TABLE>
<CAPTION>
                                   WHOLESALE PRICE INDEX                                 CONSUMER PRICE INDEX
                                     (Base Year: 1990)                                     (Base Year: 1990)

                               All                   Change from                                           Change from
       Year                Commodities              Preceding Year                General                 Preceding Year
       ----                -----------              --------------                -------                 --------------
       <S>                   <C>                       <C>                         <C>                        <C>               
       1990                  100.0                       --                        100.0                        --
       1991                  100.2                      0.2                        103.3                       3.3
       1992                   98.7                     (1.5)                       105.1                       1.8
       1993                   95.0                     (3.7)                       106.4                       1.3
       1994                   93.0                     (2.0)                       107.1                       0.7
       1995                   92.2                     (0.8)                       107.0                      (0.1)
       1996                   92.3                      0.6                        107.2                       0.2
       1997                   93.7                      1.7                        109.0                       1.8
       1998                   91.7*                    (2.0)                       109.6**                     0.6
                            Source:  International Monetary Fund,                Source: International Monetary Fund,
                             International Financial Statistics                   International Financial Statistics
</TABLE>
- -----------------
[FN]
*   Average of the first eleven months of 1998.
** Average of the first ten months of 1998.
</FN>

               Currency Fluctuation. Investments by a Portfolio in Japanese
securities will be denominated in yen and most income received by the Portfolio
from such investments will be in yen. However, the Portfolio's net asset value
will be reported, and distributions will be made, in U.S. dollars. Therefore, a
decline in the value of the yen relative to the U.S. dollar could have an
adverse effect on the value of the Portfolio's Japanese investments. The
following table presents the average exchange rates of Japanese yen for U.S.
dollars for the years shown: 

                        AVERAGE CURRENCY EXCHANGE RATES

<TABLE>
<CAPTION>
         Year                      Yen Per U.S. Dollar
         ----                      -------------------
         <S>                            <C>   
         1990                           144.79
         1991                           134.71
         1992                           126.65
         1993                           111.20
         1994                           102.21
         1995                            94.06
         1996                           108.78
         1997                           120.99
         1998                           139.11*         
</TABLE>



                                       17
<PAGE>   101



                                   
     Source: International Monetary Fund, International Financial Statistics

[FN]
*Average of the first eleven months of 1998.
</FN>

Securities Markets

               The Exchange Market. The Japanese exchange market is a highly
systematized, government regulated market currently consisting of eight stock
exchanges. The three main Japanese Exchanges (Tokyo, Osaka and Nagoya) are
comprised of First and Second Sections. The First Sections have more stringent
listing standards with respect to a company's number of years in existence,
number of outstanding shares and trading volume and, accordingly, list larger,
more established companies than the Second Sections. The Tokyo Stock Exchange
("TSE") is the largest exchange and, as of December 31, 1998, the First Section
of the TSE listed 1,340 companies with market capitalization of approximately
267.8 trillion yen (approximately $2.3 trillion as of such date). The Second
Sections of the main Japanese Exchanges generally list smaller, less capitalized
companies than those traded on the First Sections. As of December 31, 1998, the
Second Section of the TSE listed 498 companies with market capitalization of
approximately 7.4 trillion yen (approximately $64.0 billion as of such date).

               The OTC Market. The Japanese OTC market ("JASDAQ") is less
systematized than the stock exchanges. Trading of equity securities through the
JASDAQ market is conducted by securities firms in Japan, primarily through an
organization which acts as a "matching agent," as opposed to a recognized stock
exchange. Consequently, securities traded through JASDAQ may, from time to time,
and especially in falling markets, become illiquid and experience short-term
price volatility and wide spreads between bid and offer prices. This combination
of limited liquidity and price volatility may have an adverse effect on the
investment performance of a Portfolio. In periods of rapid price increases, the
limited liquidity of JASDAQ restricts a Portfolio's ability to adjust its
portfolio quickly in order to take full advantage of a significant market
increase, and conversely, during periods of rapid price declines, it restricts
the ability of a Portfolio to dispose of securities quickly in order to realize
gains previously made or to limit losses on securities held in its portfolio. In
addition, although JASDAQ has generally experienced sustained growth in
aggregate market capitalization and trading volume, there have been periods in
which aggregate market capitalization and trading volume have declined.

As of December 31, 1998, 868 issues were traded through JASDAQ, having an
aggregate market capitalization in excess of 7.7 trillion yen (approximately
$67.8 billion as of such date). The entry requirements for JASDAQ were amended
on December 1, 1998. As of February 22, 1999, there was no English translation
of the amendments available. JASDAQ has generally attracted small growth
companies or




                                       18
<PAGE>   102


companies whose major shareholders wish to sell only a small portion of the
company's equity.

               Market Risks. Although the market for Japanese equities traded on
the First Section of the TSE is substantial in terms of trading volume and
liquidity, the TSE has nonetheless exhibited significant market volatility in
the past several years. With respect to the OTC market, trades of certain stocks
may not be effected on days when the matching of buy and sell orders for such
stocks does not occur. The liquidity of the Japanese OTC market, as well as that
of the Second Sections of the exchanges, although increasing in recent years, is
limited by the small number of publicly held shares which trade on a regular
basis. Overall, Japanese securities markets have declined significantly since
1989 which has contributed to a weakness in the Japanese economy and the impact
of a further decline cannot be ascertained.

Other Factors

               The islands of Japan lie in the western Pacific Ocean, off the
eastern coast of the continent of Asia. Japan has in the past experienced
earthquakes and tidal waves of varying degrees of severity, and the risks of
such phenomena, and the damage resulting therefrom, continue to exist. The
long-term economic effects of such geological factors on the Japanese economy as
a whole, and on the Portfolio's investments, cannot be predicted. In addition,
Japan has one of the world's highest population densities. A significant
percentage of the total population of Japan is concentrated in the metropolitan
areas of Tokyo, Yokohama, Osaka and Nagoya.

               U.S. Government Securities. The obligations issued or guaranteed
by the U.S. government in which a Portfolio may invest include: direct
obligations of the U.S. Treasury and obligations issued by U.S. government
agencies and instrumentalities. Included among direct obligations of the United
States are Treasury Bills, Treasury Notes and Treasury Bonds, which differ in
terms of their interest rates, maturities and dates of issuance. Treasury Bills
have maturities of less than one year, Treasury Notes have maturities of one to
10 years and Treasury Bonds generally have maturities of greater than 10 years
at the date of issuance. Included among the obligations issued by agencies and
instrumentalities of the United States are: instruments that are supported by
the full faith and credit of the United States (such as certificates issued by
the Government National Mortgage Association ("GNMA")); instruments that are
supported by the right of the issuer to borrow from the U.S. Treasury (such as
securities of Federal Home Loan Banks); and instruments that are supported by
the credit of




                                       19
<PAGE>   103


the instrumentality (such as Federal National Mortgage Association ("FNMA") and
Federal Home Loan Mortgage Corporation ("FHLMC") bonds).

               Other U.S. government securities the Portfolios may invest in
include securities issued or guaranteed by the Federal Housing Administration,
Farmers Home Loan Administration, Export-Import Bank of the United States, Small
Business Administration, General Services Administration, Central Bank for
Cooperatives, Federal Farm Credit Banks, Federal Intermediate Credit Banks,
Federal Land Banks, Maritime Administration, Tennessee Valley Authority,
District of Columbia Armory Board and Student Loan Marketing Association.
Because the U.S. government is not obligated by law to provide support to an
instrumentality it sponsors, a Portfolio will invest in obligations issued by
such an instrumentality only if Warburg determines that the credit risk with
respect to the instrumentality does not make its securities unsuitable for
investment by the Portfolio.

               Money Market Obligations. Each Portfolio is authorized to invest,
under normal market conditions (up to 20% of its assets in the case of each U.S.
Portfolio) in domestic and foreign short-term (one year or less remaining to
maturity) money market obligations. Money market instruments consist of
obligations issued or guaranteed by the U.S. government or a foreign government,
their agencies or instrumentalities; bank obligations (including certificates of
deposit, time deposits and bankers' acceptances of domestic or foreign, domestic
savings and loans and similar institutions) that are high quality investments;
commercial paper rated no lower than A-2 by Standard & Poor's Ratings Services
("S&P") or Prime-2 by Moody's Investors Service, Inc. ("Moody's") or the
equivalent from another major rating service or, if unrated, of an issuer having
an outstanding, unsecured debt issue then rated within the three highest rating
categories; and repurchase agreements with respect to the foregoing.

               Repurchase Agreements. Each Portfolio may invest in repurchase
agreement transactions with member banks of the Federal Reserve System and
certain non-bank dealers. Repurchase agreements are contracts under which the
buyer of a security simultaneously commits to resell the security to the seller
at an agreed-upon price and date. Under the terms of a typical repurchase
agreement, a Portfolio would acquire any underlying security for a relatively
short period (usually not more than one week) subject to an obligation of the
seller to repurchase, and the Portfolio to resell, the obligation at an
agreed-upon price and time, thereby determining the yield during the Portfolio's
holding period. This arrangement results in a fixed rate of return that is not
subject to market fluctuations during the Portfolio's holding period. The value
of the underlying securities will at all times be at least equal to the total
amount of the purchase obligation, including interest. The Portfolio bears a
risk of loss in the event that the other party to a repurchase agreement
defaults on its obligations or becomes bankrupt and the Portfolio is delayed or
prevented from exercising its right to dispose of the collateral securities,
including the risk of a possible decline in the value of the underlying
securities during the period while the Portfolio seeks to assert this right.
Warburg, acting under the supervision of each Portfolio's Board, monitors the
creditworthiness of those bank and non-bank dealers with which the Portfolio
enters into repurchase agreements to evaluate this risk. A repurchase agreement
is considered to be a loan under the 1940 Act.

               Money Market Mutual Funds. Where Warburg believes that it would
be beneficial to a Portfolio and appropriate considering the factors of return
and liquidity, a



                                       20
<PAGE>   104


Portfolio may invest up to 5% of its assets in securities of money market mutual
funds that are unaffiliated with the Portfolio or Warburg. A money market mutual
fund is an investment company that invests in short-term high quality money
market instruments. A money market mutual fund generally does not purchase
securities with a remaining maturity of more than one year. As a shareholder in
any mutual fund, a Portfolio will bear its ratable share of the mutual fund's
expenses, including management fees, and will remain subject to payment of the
Portfolio's management fees and other expenses with respect to assets so
invested.

               Debt Securities. Each International Portfolio may invest up to
35% of its total assets, and each U.S. Portfolio may invest up to 20% of its
total assets, in debt securities. Any percentage limitation on a Portfolio's
ability to invest in debt securities will not be applicable during periods when
the Portfolio pursues a temporary defensive strategy as discussed below.

               The interest income to be derived may be considered as one factor
in selecting debt securities for investment by Warburg. Because the market value
of debt obligations can be expected to vary inversely to changes in prevailing
interest rates, investing in debt obligations may provide an opportunity for
capital growth when interest rates are expected to decline. The success of such
a strategy is dependent upon Warburg's ability to forecast accurately changes in
interest rates. The market value of debt obligations may also be expected to
vary depending upon, among other factors, the ability of the issuer to repay
principal and interest, any change in investment rating and general economic
conditions.

               Each Portfolio may invest to a limited extent in zero coupon
securities. See "Additional Information Concerning Taxes" for a discussion of
the tax consequences to shareholders of a Portfolio that invests in zero coupon
securities.

               A security will be deemed to be investment grade if it is rated
within the four highest grades by Moody's or S&P or, if unrated, is determined
to be of comparable quality by Warburg. Securities rated in the fourth highest
grade may have speculative characteristics and changes in economic conditions or
other circumstances are more likely to lead to a weakened capacity to make
principal and interest payments than is the case with higher grade bonds.
Subsequent to its purchase by a Portfolio, an issue of securities may cease to
be rated or its rating may be reduced below the minimum required for purchase by
the Portfolio. Neither event will require sale of such securities, although
Warburg will consider such event in its determination of whether the Portfolio
should continue to hold the securities.

               Below Investment Grade Securities. The Emerging Markets Portfolio
may invest or hold up to 35% of its net assets in debt securities rated below
investment grade. Within their 20% limitation on investing in debt securities,
each of the Value Portfolio and the Small Company Value Portfolio may invest up
to 10% of its total assets in debt securities rated below investment grade.
Within their respective percentage limitation on investing in debt securities,
each of the Small Company Growth, Post-Venture Capital, International Equity and
Japan Growth Portfolios may invest up to 5% of its total assets in debt
securities rated below investment grade. A Portfolio's investments in
convertible debt or equity securities rated below investment grade will be
included in determining these percentage limitations.




                                       21
<PAGE>   105




               Below investment grade debt securities may be rated as low as C
by Moody's or D by S&P, or be deemed by Warburg to be of equivalent quality.
Securities that are rated C by Moody's are the lowest rated class and can be
regarded as having extremely poor prospects of ever attaining any real
investment standing. A security rated D by S&P is in default or is expected to
default upon maturity or payment date. Below investment grade securities
(commonly referred to as "junk bonds"), (i) will likely have some quality and
protective characteristics that, in the judgment of the rating organizations,
are outweighed by large uncertainties or major risk exposures to adverse
conditions and (ii) are predominantly speculative with respect to the issuer's
capacity to pay interest and repay principal in accordance with the terms of the
obligation. The market values of certain of these securities also tend to be
more sensitive to individual corporate developments and changes in economic
conditions than investment grade securities. In addition, these securities
generally present a higher degree of credit risk. The risk of loss due to
default is significantly greater because these securities generally are
unsecured and frequently are subordinated to the prior payment of senior
indebtedness. While the market values of below investment grade securities tend
to react less to fluctuations in interest rate levels than do those of
investment grade securities, the market values of certain of these securities
also tend to be more sensitive to individual corporate developments and changes
in economic conditions than investment grade securities. In addition, below
investment grade securities generally present a higher degree of credit risk.
Issuers of below investment grade securities are often highly leveraged and may
not have more traditional methods of financing available to them so that their
ability to service their obligations during an economic downturn or during
sustained periods of rising interest rates may be impaired. The risk of loss due
to default by such issuers is significantly greater because below investment
grade securities generally are unsecured and frequently are subordinated to the
prior payment of senior indebtedness.

               An economic recession could disrupt severely the market for such
securities and may adversely affect the value of such securities and the ability
of the issuers of such securities to repay principal and pay interest thereon.

               A Portfolio may have difficulty disposing of certain of these
securities because there may be a thin trading market. Because there is no
established retail secondary market for many of these securities, the Portfolios
anticipate that these securities could be sold only to a limited number of
dealers or institutional investors. To the extent a secondary trading market for
these securities does exist, it generally is not as liquid as the secondary
market for investment grade securities. The lack of a liquid secondary market,
as well as adverse publicity and investor perception with respect to these
securities, may have an adverse impact on market price and a Portfolio's ability
to dispose of particular issues when necessary to meet the Portfolio's liquidity
needs or in response to a specific economic event such as a deterioration in the
creditworthiness of the issuer. The lack of a liquid secondary market for
certain securities also may make it more difficult for a Portfolio to obtain
accurate market quotations for purposes of valuing the Portfolio and calculating
its net asset value.

               The market value of below investment grade securities is more
volatile than that of investment grade securities. Factors adversely impacting
the market value of these securities will adversely impact the Portfolio's net
asset value. The Portfolio will rely on the judgment, analysis and experience of
Warburg in evaluating the creditworthiness of an issuer. In this evaluation,
Warburg will take into consideration, among other things, the issuer's




                                       22
<PAGE>   106


financial resources, its sensitivity to economic conditions and trends, its
operating history, the quality of the issuer's management and regulatory
matters. Normally, below investment grade securities are not intended for
short-term investment. A Portfolio may incur additional expenses to the extent
it is required to seek recovery upon a default in the payment of principal or
interest on its portfolio holdings of such securities. At times, adverse
publicity regarding lower-rated securities has depressed the prices for such
securities to some extent.

               Structured Securities. Each Portfolio may purchase any type of
publicly traded or privately negotiated fixed income security, including
mortgage-backed securities; structured notes, bonds or debentures; and
assignments of and participations in loans.

               Mortgage-Backed Securities. Each Portfolio may invest in
mortgage-backed securities issued by U.S. government entities, such the
Government National Mortgage Association ("GNMA"), the Federal National Mortgage
Association ("FNMA") or the Federal Home Loan Mortgage Corporation ("FHLMC"). In
addition, the Japan Growth Portfolio may invest in mortgage-backed securities
sponsored by U.S. and foreign issuers as well as non-governmental issuers.
Mortgage-backed securities represent direct or indirect participations in, or
are secured by and payable from, mortgage loans secured by real property. The
mortgages backing these securities include, among other mortgage instruments,
conventional 30-year fixed-rate mortgages, 15-year fixed rate mortgages,
graduated payment mortgages and adjustable rate mortgages. The government or the
issuing agency typically guarantees the payment of interest and principal of
these securities. However, the guarantees do not extend to the securities' yield
or value, which are likely to vary inversely with fluctuations in interest
rates, nor do the guarantees extend to the yield or value of the Portfolio's
shares. These securities generally are "pass-through" instruments, through which
the holders receive a share of all interest and principal payments from the
mortgages underlying the securities, net of certain fees.

               Yields on pass-through securities are typically quoted by
investment dealers and vendors based on the maturity of the underlying
instruments and the associated average life assumption. The average life of
pass-through pools varies with the maturities of the underlying mortgage loans.
A pool's term may be shortened by unscheduled or early payments of principal on
the underlying mortgages. The occurrence of mortgage prepayments is affected by
various factors, including the level of interest rates, general economic
conditions, the location, scheduled maturity and age of the mortgage and other
social and demographic conditions. Because prepayment rates of individual pools
vary widely, it is not possible to predict accurately the average life of a
particular pool. At present, pools, particularly those with loans with other
maturities or different characteristics, are priced on an assumption of average
life determined for each pool. In periods of falling interest rates, the rate of
prepayment tends to increase, thereby shortening the actual average life of a
pool of mortgage-related securities. Conversely, in periods of rising rates the
rate of prepayment tends to decrease, thereby lengthening the actual average
life of the pool. However, these effects may not be present, or may differ in
degree, if the mortgage loans in the pools have adjustable interest rates or
other special payment terms, such as a prepayment charge. Actual prepayment
experience may cause the yield of mortgage-backed securities to differ from the
assumed average life yield. Reinvestment of prepayments may occur at higher or
lower




                                       23
<PAGE>   107


interest rates than the original investment, thus affecting the Portfolio's
yield. In addition, collateralized mortgage obligations may be less marketable
than other securities.

               The rate of interest on mortgage-backed securities is lower than
the interest rates paid on the mortgages included in the underlying pool due to
the annual fees paid to the servicer of the mortgage pool for passing through
monthly payments to certificate holders and to any guarantor, such as GNMA, and
due to any yield retained by the issuer. Actual yield to the holder may vary
from the coupon rate, even if adjustable, if the mortgage-backed securities are
purchased or traded in the secondary market at a premium or discount. In
addition, there is normally some delay between the time the issuer receives
mortgage payments from the servicer and the time the issuer makes the payments
on the mortgage-backed securities, and this delay reduces the effective yield to
the holder of such securities.

               Asset-Backed Securities. Each Portfolio may invest in
asset-backed securities, which represent participations in, or are secured by
and payable from, assets such as motor vehicle installment sales, installment
loan contracts, leases of various types of real and personal property and
receivables from revolving credit (credit card) agreements. Such assets are
securitized through the use of trusts and special purpose corporations. Payments
or distributions of principal and interest may be guaranteed up to certain
amounts and for a certain time period by a letter of credit or a pool insurance
policy issued by a financial institution unaffiliated with the trust or
corporation.

               Asset-backed securities present certain risks that are not
presented by other securities in which the Portfolio may invest. Automobile
receivables generally are secured by automobiles. Most issuers of automobile
receivables permit the loan servicers to retain possession of the underlying
obligations. If the servicer were to sell these obligations to another party,
there is a risk that the purchaser would acquire an interest superior to that of
the holders of the asset-backed securities. In addition, because of the large
number of vehicles involved in a typical issuance and technical requirements
under state laws, the trustee for the holders of the automobile receivables may
not have a proper security interest in the underlying automobiles. Therefore,
there is the possibility that recoveries on repossessed collateral may not, in
some cases, be available to support payments on these securities. Credit card
receivables are generally unsecured, and the debtors are entitled to the
protection of a number of state and federal consumer credit laws, many of which
give such debtors the right to set off certain amounts owed on the credit cards,
thereby reducing the balance due. In addition, there is no assurance that the
security interest in the collateral can be realized. The Emerging Markets and
Japan Growth Portfolios may purchase asset-backed securities that are unrated.

               Structured Notes, Bonds or Debentures. Typically, the value of
the principal and/or interest on these instruments is determined by reference to
changes in the value of specific currencies, interest rates, commodities,
indexes or other financial indicators (the "Reference") or the relevant change
in two or more References. The interest rate or the principal amount payable
upon maturity or redemption may be increased or decreased depending upon changes
in the applicable Reference. The terms of the structured securities may provide
that in certain circumstances no principal is due at maturity and, therefore,
may result in the loss of a Portfolio's entire investment. The value of
structured securities may move in the same or the opposite direction as the
value of the Reference, so that appreciation of the Reference may produce an
increase or decrease in




                                       24
<PAGE>   108


the interest rate or value of the security at maturity. In addition, the change
in interest rate or the value of the security at maturity may be a multiple of
the change in the value of the Reference so that the security may be more or
less volatile than the Reference, depending on the multiple. Consequently,
structured securities may entail a greater degree of market risk and volatility
than other types of debt obligations.

               Loan Participations and Assignments. Each Portfolio may invest in
fixed and floating rate loans ("Loans") arranged through private negotiations
between a foreign government (a "Borrower") and one or more financial
institutions ("Lenders"). The majority of the Portfolio's investments in Loans
are expected to be in the form of participations in Loans ("Participations") and
assignments of portions of Loans from third parties ("Assignments").
Participations typically will result in the Portfolio having a contractual
relationship only with the Lender, not with the Borrower. The Portfolio will
have the right to receive payments of principal, interest and any fees to which
it is entitled only from the Lender selling the Participation and only upon
receipt by the Lender of the payments from the Borrower. In connection with
purchasing Participations, the Portfolio generally will have no right to enforce
compliance by the Borrower with the terms of the loan agreement relating to the
Loan, nor any rights of set-off against the Borrower, and the Portfolio may not
directly benefit from any collateral supporting the Loan in which it has
purchased the Participation. As a result, the Portfolio will assume the credit
risk of both the Borrower and the Lender that is selling the Participation. In
the event of the insolvency of the Lender selling a Participation, the Portfolio
may be treated as a general creditor of the Lender and may not benefit from any
set-off between the Lender and the Borrower. The Portfolio will acquire
Participations only if the Lender interpositioned between the Portfolio and the
Borrower is determined by Warburg to be creditworthy.

               When the Portfolio purchases Assignments from Lenders, the
Portfolio will acquire direct rights against the Borrower on the Loan. However,
since Assignments are generally arranged through private negotiations between
potential assignees and potential assignors, the rights and obligations acquired
by the Portfolio as the purchaser of an Assignment may differ from, and be more
limited than, those held by the assigning Lender.

               There are risks involved in investing in Participations and
Assignments. The Portfolio may have difficulty disposing of them because there
is no liquid market for such securities. The lack of a liquid secondary market
will have an adverse impact on the value of such securities and on the
Portfolio's ability to dispose of particular Participations or Assignments when
necessary to meet the Portfolio's liquidity needs or in response to a specific
economic event, such as a deterioration in the creditworthiness of the Borrower.
The lack of a liquid market for Participations and Assignments also may make it
more difficult for the Portfolio to assign a value to these securities for
purposes of valuing the Portfolio's portfolio and calculating its net asset
value.

               Temporary Defensive Strategies. When Warburg believes that a
defensive posture is warranted, each Portfolio may invest temporarily without
limit in investment grade debt obligations and in domestic and foreign money
market obligations, including repurchase agreements.



                                       25

<PAGE>   109




               Securities of Other Investment Companies. Each Portfolio may
invest in securities of other investment companies to the extent permitted under
the 1940 Act. Presently, under the 1940 Act, a Portfolio may hold securities of
another investment company in amounts which (i) do not exceed 3% of the total
outstanding voting stock of such company, (ii) do not exceed 5% of the value of
the Portfolio's total assets and (iii) when added to all other investment
company securities held by the Portfolio, do not exceed 10% of the value of the
Portfolio's total assets.

               Lending of Portfolio Securities. A Portfolio may lend portfolio
securities to brokers, dealers and other financial organizations that meet
capital and other credit requirements or other criteria established by the
Fund's Board of Directors (the "Board"). These loans, if and when made, may not
exceed 33-1/3% of a Portfolio's net assets (including the loan collateral) taken
at value. A Portfolio will not lend portfolio securities to its investment
adviser, any sub-investment adviser or their affiliates unless it has applied
for and received specific authority to do so from the SEC. Loans of portfolio
securities will be collateralized by cash, letters of credit or U.S. Government
Securities, which are maintained at all times in an amount equal to at least
100% of the current market value of the loaned securities. Any gain or loss in
the market price of the securities loaned that might occur during the term of
the loan would be for the account of the Portfolio involved. From time to time,
a Portfolio may return a part of the interest earned from the investment of
collateral received for securities loaned to the borrower and/or a third party
that is unaffiliated with the Portfolio and that is acting as a "finder."

               By lending its securities, the Portfolio can increase its income
by continuing to receive interest and any dividends on the loaned securities as
well as by either investing the collateral received for securities loaned in
short-term instruments or obtaining yield in the form of interest paid by the
borrower when U.S. Government Securities are used as collateral. Each Portfolio
will adhere to the following conditions whenever its portfolio securities are
loaned: (i) the Portfolio must receive at least 100% cash collateral or
equivalent securities of the type discussed in the preceding paragraph from the
borrower; (ii) the borrower must increase such collateral whenever the market
value of the securities rises above the level of such collateral; (iii) the
Portfolio must be able to terminate the loan at any time; (iv) the Portfolio
must receive reasonable interest on the loan, as well as any dividends, interest
or other distributions on the loaned securities and any increase in market
value; (v) the Portfolio may pay only reasonable custodian fees in connection
with the loan; and (vi) voting rights on the loaned securities may pass to the
borrower, provided, however, that if a material event adversely affecting the
investment occurs, the Board must terminate the loan and regain the right to
vote the securities. Loan agreements involve certain risks in the event of
default or insolvency of the other party including possible delays or
restrictions upon the Portfolio's ability to recover the loaned securities or
dispose of the collateral for the loan.

               When-Issued Securities and Delayed-Delivery Transactions. Each
Portfolio may utilize up to 20% of its total assets to purchase securities on a
when-issued basis and purchase or sell securities on a delayed-delivery basis.
In these transactions, payment for and delivery of the securities occurs beyond
the regular settlement dates. A Portfolio will not enter into a when-issued or
delayed-delivery transaction for the purpose of leverage, but may sell the right
to acquire a when-issued security prior to its acquisition or dispose of its
right to deliver or receive securities in a delayed-delivery transaction if
Warburg deems it




                                       26
<PAGE>   110


advantageous to do so. The payment obligation and the interest rate that will be
received in when-issued and delayed-delivery transactions are fixed at the time
the buyer enters into the commitment. Due to fluctuations in the value of
securities purchased or sold on a when-issued or delayed-delivery basis, the
prices of such securities may be higher or lower than the prices available in
the market on the dates when the investments are actually delivered to the
buyers. Each Portfolio will segregate with its custodian cash or liquid
securities in an amount equal to its when-issued and delayed-delivery purchase
commitments and will segregate the securities underlying commitments to sell
securities for delayed delivery. When a Portfolio agrees to purchase when-issued
or delayed-delivery securities, its custodian will set aside cash or liquid
securities equal to the amount of the commitment. Normally, the custodian will
set aside portfolio securities to satisfy a purchase commitment, and in such a
case a Portfolio may be required subsequently to segregate additional assets in
order to ensure that the value of the segregated assets remains equal to the
amount of the Portfolio's commitment. It may be expected that a Portfolio's net
assets will fluctuate to a greater degree when it sets aside portfolio
securities to cover such purchase commitments than when it sets aside cash. When
a Portfolio engages in when-issued or delayed-delivery transactions, it relies
on the other party to consummate the trade. Failure of the seller to do so may
result in the Portfolio incurring a loss or missing an opportunity to obtain a
price considered to be advantageous.

               Short Sales (Post-Venture Capital Portfolio). The Post-Venture
Capital Portfolio may engage in "short sales" that do not meet the definition of
short sales "against the box" with respect to up to 10% of its total assets. In
a short sale, the investor sells a borrowed security and has a corresponding
obligation to the lender to return the identical security. The seller does not
immediately deliver the securities sold and is said to have a short position in
those securities until delivery occurs. To deliver the securities to the buyer,
the Portfolio must arrange through a broker to borrow the securities and, in so
doing, the Portfolio becomes obligated to replace the securities borrowed at
their market price at the time of replacement, whatever that price may be. The
Portfolio will make a profit or incur a loss as a result of a short sale
depending on whether the price of the security decreases or increases between
the date of the short sale and the date on which the Portfolio purchases the
security to replace the borrowed securities that have been sold. The amount of
any loss would be increased (and any gain decreased) by any premium or interest
the Portfolio is required to pay in connection with a short sale.

               The Portfolio's obligation to replace the securities borrowed in
connection with a short sale will be secured by cash or liquid securities
deposited as collateral with the broker. In addition, the Portfolio will
segregate with its custodian or a qualified subcustodian an amount of cash or
liquid securities equal to the difference, if any, between (i) the market value
of the securities sold at the time they were sold short and (ii) any cash or
liquid securities deposited as collateral with the broker in connection with the
short sale (not including the proceeds of the short sale). Until it replaces the
borrowed securities, the Portfolio will maintain the segregated assets daily at
a level so that (a) the amount segregated plus the amount deposited with the
broker (not including the proceeds from the short sale) will equal the current
market value of the securities sold short and (b) the amount segregated plus the
amount deposited with the broker (not including the proceeds of the short sale)
will not be less than the market value of the securities at the time they were
sold short.




                                       27
<PAGE>   111




               Short Sales Against the Box. Each Portfolio may enter into short
sales "against the box." Not more than 10% of a Portfolio's net assets (taken at
current value) may be held as collateral for such sales at any one time, except
that the Emerging Markets Portfolio will not be subject to such limitation.
While a short sale is made by selling a security a Portfolio does not own, a
short sale is "against the box" to the extent that the Portfolio
contemporaneously owns or has the right to obtain, at no added cost, securities
identical to those sold short. A Portfolio will segregate with its custodian or
a qualified subcustodian, the securities sold short or convertible or
exchangeable preferred stocks or debt securities in connection with short sales
against the box. No Portfolio, other than the Small Company Value Portfolio,
intends to engage in short sales against the box for investment purposes. A
Portfolio may make a short sale as a hedge, when it believes that the price of a
security may decline, causing a decline in the value of a security owned by the
Portfolio (or a security convertible or exchangeable for such security). In such
case, any future losses in the Portfolio's long position should be offset by a
gain in the short position and, conversely, any gain in the long position should
be reduced by a loss in the short position. The extent to which such gains or
losses are reduced will depend upon the amount of the security sold short
relative to the amount the Portfolio owns. There will be certain additional
transaction costs associated with short sales against the box, but the Portfolio
will endeavor to offset these costs with the income from the investment of the
cash proceeds of short sales.

               If a Portfolio effects a short sale of securities at a time when
it has an unrealized gain on the securities, it may be required to recognize
that gain as if it had actually sold the securities (as a "constructive sale")
on the date it effects the short sale. However, such constructive sale treatment
may not apply if the Portfolio closes out the short sale with securities other
than the appreciated securities held at the time of the short sale and if
certain other conditions are satisfied. Uncertainty regarding the tax
consequences of effecting short sales may limit the extent to which a Portfolio
may effect short sales.

               Convertible Securities. Convertible securities in which a
Portfolio may invest, including both convertible debt and convertible preferred
stock, may be converted at either a stated price or stated rate into underlying
shares of common stock. Because of this feature, convertible securities enable
an investor to benefit from increases in the market price of the underlying
common stock. Convertible securities provide higher yields than the underlying
equity securities, but generally offer lower yields than non-convertible
securities of similar quality. Like bonds, the value of convertible securities
fluctuates in relation to changes in interest rates and, in addition, also
fluctuates in relation to the underlying common stock.

               Warrants. Each Portfolio may invest up to 10% of its net assets
in warrants. Warrants are securities that give the holder the right, but not the
obligation to purchase equity issues of the company issuing the warrants, or a
related company, at a fixed price either on a date certain or during a set
period. A Portfolio may invest in warrants to purchase equity securities
consisting of common and preferred stock. The equity security underlying a
warrant is authorized at the time the warrant is issued or is issued together
with the warrant.

               Investing in warrants can provide a greater potential for profit
or loss than an equivalent investment in the underlying security, and, thus, can
be a speculative investment. At the time of issue, the cost of a warrant is
substantially less than the cost of the underlying security itself, and price
movements in the underlying security are generally magnified in the



                                       28

<PAGE>   112


price movements of the warrant. This leveraging effect enables the investor to
gain exposure to the underlying security with a relatively low capital
investment. This leveraging increases an investor's risk, however, in the event
of a decline in the value of the underlying security and can result in a
complete loss of the amount invested in the warrant. In addition, the price of a
warrant tends to be more volatile than, and may not correlate exactly to, the
price of the underlying security. If the market price of the underlying security
is below the exercise price of the warrant on its expiration date, the warrant
will generally expire without value. The value of a warrant may decline because
of a decline in the value of the underlying security, the passage of time,
changes in interest rates or in the dividend or other policies of the company
whose equity underlies the warrant or a change in the perception as to the
future price of the underlying security, or any combination thereof. Warrants
generally pay no dividends and confer no voting or other rights other than to
purchase the underlying security.

               Non-Publicly Traded and Illiquid Securities. Each Portfolio
(other than the Post-Venture Capital, Value and Emerging Markets Portfolios) may
not invest more than 10% of its net assets in illiquid securities, including
securities that are illiquid by virtue of the absence of a readily available
market, repurchase agreements which have a maturity of longer than seven days,
certain Rule 144A Securities (as defined below), time deposits maturing in more
than seven days and, with respect to the Post-Venture Capital Portfolio, Private
Funds (as defined below). The Post-Venture Capital, Value and Emerging Markets
Portfolios may invest up to 15% of its net assets in such securities. Securities
that have legal or contractual restrictions on resale but have a readily
available market are not considered illiquid for purposes of this limitation.
Repurchase agreements subject to demand are deemed to have a maturity equal to
the notice period.

               Historically, illiquid securities have included securities
subject to contractual or legal restrictions on resale because they have not
been registered under the Securities Act of 1933, as amended (the "Securities
Act"), securities which are otherwise not readily marketable and repurchase
agreements having a maturity of longer than seven days. Securities which have
not been registered under the Securities Act are referred to as private
placements or restricted securities and are purchased directly from the issuer
or in the secondary market. Companies whose securities are not publicly traded
may not be subject to the disclosure and other investor protection requirements
applicable to companies whose securities are publicly traded. Limitations on
resale may have an adverse effect on the marketability of portfolio securities
and a mutual fund might be unable to dispose of restricted or other illiquid
securities promptly or at reasonable prices and might thereby experience
difficulty satisfying redemptions within seven days without borrowing. A mutual
fund might also have to register such restricted securities in order to dispose
of them resulting in additional expense and delay. Adverse market conditions
could impede such a public offering of securities.

               In recent years, however, a large institutional market has
developed for certain securities that are not registered under the Securities
Act including repurchase agreements, commercial paper, foreign securities,
municipal securities and corporate bonds and notes. Institutional investors
depend on an efficient institutional market in which the unregistered security
can be readily resold or on an issuer's ability to honor a demand for repayment.
The fact that there are contractual or legal restrictions on resale to the
general public or to certain institutions may not be indicative of the liquidity
of such investments.



                                       29

<PAGE>   113




               Rule 144A Securities. Rule 144A under the Securities Act adopted
by the SEC allows for a broader institutional trading market for securities
otherwise subject to restriction on resale to the general public. Rule 144A
establishes a "safe harbor" from the registration requirements of the Securities
Act for resales of certain securities to qualified institutional buyers. Warburg
anticipates that the market for certain restricted securities such as
institutional commercial paper will expand further as a result of this
regulation and use of automated systems for the trading, clearance and
settlement of unregistered securities of domestic and foreign issuers, such as
the PORTAL System sponsored by the National Association of Securities Dealers,
Inc.

               An investment in Rule 144A Securities will be considered illiquid
and therefore subject to a Portfolio's limit on the purchase of illiquid
securities unless the Board or its delegates determines that the Rule 144A
Securities are liquid. Warburg will monitor the liquidity of restricted
securities in a Portfolio under the supervision of the Board. In reaching
liquidity decisions, Warburg may consider, inter alia, the following factors:
(i) the unregistered nature of the security; (ii) the frequency of trades and
quotes for the security; (iii) the number of dealers wishing to purchase or sell
the security and the number of other potential purchasers; (iv) dealer
undertakings to make a market in the security and (v) the nature of the security
and the nature of the marketplace trades (e.g., the time needed to dispose of
the security, the method of soliciting offers and the mechanics of the
transfer).

               Investing in Rule 144A securities could have the effect of
increasing the level of illiquidity in the Portfolios to the extent that
qualified institutional buyers are unavailable or uninterested in purchasing
such securities from the Portfolios. The Board may adopt guidelines and delegate
to Warburg the daily function of determining and monitoring the liquidity of
Rule 144A Securities, although the Board will retain ultimate responsibility for
liquidity determinations.

               Emerging Growth and Smaller Capitalization Companies; Unseasoned
Issuers. Each Portfolio may invest in small- and medium- sized and emerging
growth companies and, except for the International Equity Portfolio, companies
with continuous operations of less than three years ("unseasoned issuers"),
which may include foreign securities, involve considerations that are not
applicable to investing in securities of established, larger-capitalization
issuers, including reduced and less reliable information about issuers and
markets, less stringent financial disclosure requirements, illiquidity of
securities and markets, higher brokerage commissions and fees and greater market
risk in general. In addition, securities of these companies may involve greater
risks since these securities may have limited marketability and, thus, may be
more volatile.

               Although investing in securities of small- and medium-sized and
emerging growth companies, unseasoned issuers or issuers in "special situations"
(see below) offers potential for above-average returns if the companies are
successful, the risk exists that the companies will not succeed and the prices
of the companies' shares could significantly decline in value. Therefore, an
investment in a Portfolio may involve a greater degree of risk than an




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investment in other mutual funds that seek growth of capital or capital
appreciation by investing in better-known, larger companies.

               "Special Situation Companies". "Special situation companies" are
involved in an actual or prospective acquisition or consolidation;
reorganization; recapitalization; merger, liquidation or distribution of cash,
securities or other assets; a tender or exchange offer; a breakup or workout of
a holding company; or litigation which, if resolved favorably, may provide an
attractive investment opportunity. If the actual or prospective situation does
not materialize as anticipated, the market price of the securities of a "special
situation company" may decline significantly.

               Private Funds (Post-Venture Capital Portfolio). Up to 10% of the
Portfolio's assets may be invested in United States or foreign private limited
partnerships or other investment funds ("Private Funds") that themselves invest
in equity or debt securities of (a) companies in the venture capital or
post-venture capital stages of development or (b) companies engaged in special
situations or changes in corporate control, including buyouts. In selecting
Private Funds for investment, Abbott Capital Management, LLC, the Portfolio's
sub-investment adviser with respect to Private Funds ("Abbott"), attempts to
invest in a mix of Private Funds that will provide an above average internal
rate of return (i.e., the discount rate at which the present value of an
investment's future cash inflows (dividend income and capital gains) are equal
to the cost of the investment). Warburg believes that the Portfolio's
investments in Private Funds offer individual investors a unique opportunity to
participate in venture capital and other private investment funds, providing
access to investment opportunities typically available only to large
institutions and accredited investors. Although investments in Private Funds
offer the opportunity for significant capital gains, these investments involve a
high degree of business and financial risk that can result in substantial losses
in the portion of the Post-Venture Capital Portfolio's assets invested in these
investments. Among these are the risks associated with investment in companies
in an early stage of development or with little or no operating history,
companies operating at a loss or with substantial variation in operation results
from period to period, companies with the need for substantial additional
capital to support expansion or to maintain a competitive position, or companies
with significant financial leverage. Such companies may also face intense
competition from others including those with greater financial resources or more
extensive development, manufacturing, distribution or other attributes, over
which the Portfolio will have no control.

               Interests in the Private Funds in which the Post-Venture Capital
Portfolio may invest will be subject to substantial restrictions on transfer
and, in some instances, may be non-transferable for a period of years. Private
Funds may participate in only a limited number of investments and, as a
consequence, the return of a particular Private Fund may be substantially
adversely affected by the unfavorable performance of even a single investment.
Certain of the Private Funds in which the Portfolio may invest may pay their
investment managers a fee based on the performance of the Portfolio, which may
create an incentive for the manager to make investments that are riskier or more
speculative than would be the case if the manager was paid a fixed fee. Private
Funds are not registered under the 1940 Act and, consequently, are not subject
to the restrictions on affiliated transactions and other protections applicable
to regulated investment companies. The valuation of companies held by Private
Funds, the securities of which are generally unlisted and illiquid, may be very
difficult and will often



                                       31

<PAGE>   115


depend on the subjective valuation of the managers of the Private Funds, which
may prove to be inaccurate. Inaccurate valuations of a Private Fund's portfolio
holdings may affect the Portfolio's net asset value calculations. Private Funds
in which the Portfolio invests will not borrow to increase the amount of assets
available for investment or otherwise engage in leverage. Debt securities held
by a Private Fund will tend to be rated below investment grade and may be rated
as low as C by Moody's or D by S&P. Securities in these rating categories are in
payment default or have extremely poor prospects of attaining any investment
standing. The Portfolio may also hold non-publicly traded equity securities of
companies in the venture and post-venture stages of development, such as those
of closely held companies or private placements of public companies. The portion
of the Portfolio's assets invested in these non-publicly traded securities will
vary over time depending on investment opportunities and other factors. The
Portfolio's illiquid assets, including interests in Private Funds and other
illiquid non-publicly traded securities, may not exceed 15% of the Portfolio's
net assets.

               Warburg believes that venture capital participation in a
company's capital structure can lead to revenue/earnings growth rates above
those of older, public companies such as those in the Dow Jones Industrial
Average, the Fortune 500 or the Morgan Stanley Capital International Europe,
Australasia, Far East ("EAFE") Index. Venture capitalists finance start-up
companies, companies in the early stages of developing new products or services
and companies undergoing a restructuring or recapitalization, since these
companies may not have access to conventional forms of financing (such as bank
loans or public issuances of stock). Venture capitalists may hold substantial
positions in companies that may have been acquired at prices significantly below
the initial public offering price. This may create a potential adverse impact in
the short-term on the market price of a company's stock due to sales in the open
market by a venture capitalist or others who acquired the stock at lower prices
prior to the company's IPO. Warburg will consider the impact of such sales in
selecting post-venture capital investments. Venture capitalists may be
individuals or funds organized by venture capitalists which are typically
offered only to large institutions, such as pension funds and endowments, and
certain accredited investors. Outside of the United States, venture capitalists
may also consist of merchant banks and other banking institutions that provide
venture capital financing in a manner similar to U.S. venture capitalists.
Venture capital participation in a company is often reduced when the company
engages in an IPO of its securities or when it is involved in a merger, tender
offer or acquisition.

               Warburg has experience in researching small companies, companies
in the early stages of development and venture capital-financed companies. Its
team of analysts, led by Elizabeth Dater and Stephen Lurito, regularly monitors
portfolio companies whose securities are held by over 400 of the larger domestic
venture capital funds. Ms. Dater and Mr. Lurito have managed post-venture equity
securities in separate accounts for institutions since 1989 and currently manage
over $1 billion of such assets for investment companies and other institutions.

               Borrowing. Each Portfolio may borrow up to 30% of its total
assets for temporary or emergency purposes, including to meet portfolio
redemption requests so as to permit the orderly disposition of portfolio
securities or to facilitate settlement transactions on portfolio securities.
Investments (including roll-overs) will not be made when borrowings exceed 5% of
the Portfolio's net assets. Although the principal of such borrowings will be
fixed, the Portfolio's assets may change in value during the time the borrowing
is outstanding.




                                       32
<PAGE>   116


Each Portfolio expects that some of its borrowings may be made on a secured
basis. In such situations, either the custodian will segregate the pledged
assets for the benefit of the lender or arrangements will be made with a
suitable subcustodian, which may include the lender.

               Reverse Repurchase Agreements and Dollar Rolls. Each of the
Portfolios may enter into reverse repurchase agreements with member banks of the
Federal Reserve System and certain non-bank dealers. Reverse repurchase
agreements involve the sale of securities held by the Portfolio pursuant to its
agreement to repurchase them at a mutually agreed upon date, price and rate of
interest. At the time the Portfolio enters into a reverse repurchase agreement,
it will segregate with an approved custodian cash or liquid securities having a
value not less than the repurchase price (including accrued interest). The
segregated assets will be marked-to-market daily and additional assets will be
segregated on any day in which the assets fall below the repurchase price (plus
accrued interest). The Portfolio's liquidity and ability to manage its assets
might be affected when it sets aside cash or portfolio securities to cover such
commitments. Reverse repurchase agreements involve the risk that the market
value of the securities retained in lieu of sale may decline below the price of
the securities the Portfolio has sold but is obligated to repurchase. In the
event the buyer of securities under a reverse repurchase agreement files for
bankruptcy or becomes insolvent, such buyer or its trustee or receiver may
receive an extension of time to determine whether to enforce the Portfolio's
obligation to repurchase the securities, and the Portfolio's use of the proceeds
of the reverse repurchase agreement may effectively be restricted pending such
decision.

               The Portfolios also may enter into "dollar rolls," in which the
Portfolio sells fixed-income securities for delivery in the current month and
simultaneously contracts to repurchase similar but not identical (same type,
coupon and maturity) securities on a specified future date. During the roll
period, the Portfolio would forego principal and interest paid on such
securities. The Portfolio would be compensated by the difference between the
current sales price and the forward price for the future purchase, as well as by
the interest earned on the cash proceeds of the initial sale. At the time the
Portfolio enters into a dollar roll transaction, it will segregate with an
approved custodian cash or liquid securities having a value not less than the
repurchase price (including accrued interest) and will subsequently monitor the
segregated assets to ensure that their value is maintained. Reverse repurchase
agreements and dollar rolls that are accounted for as financings are considered
to be borrowings under the 1940 Act.

               REITs. Each Portfolio may invest in real estate investment trusts
("REITs"), which are pooled investment vehicles that invest primarily in
income-producing real estate or real estate related loans or interests. Like
regulated investment companies such as the Fund, REITs are not taxed on income
distributed to shareholders provided they comply with several requirements of
the Internal Revenue Code of 1986, amended (the "Code"). By investing in a




                                       33
<PAGE>   117


REIT, the Portfolio will indirectly bear its proportionate share of any expenses
paid by the REIT in addition to the expenses of the Portfolio.

               Investing in REITs involves certain risks. A REIT may be affected
by changes in the value of the underlying property owned by such REIT or by the
quality of any credit extended by the REIT. REITs are dependent on management
skills, are not diversified (except to the extent the Code requires), and are
subject to the risks of financing projects. REITs are subject to heavy cash flow
dependency, default by borrowers, self-liquidation, the possibilities of failing
to qualify for the exemption from tax for distributed income under the Code and
failing to maintain their exemptions from the 1940 Act. REITs are also subject
to interest rate risks.

               Non-Diversified Status (Small Company Growth, Emerging Markets
and Japan Growth Portfolios). These Portfolios are classified as non-diversified
within the meaning of the 1940 Act, which means that each Portfolio is not
limited by such Act in the proportion of its assets that it may invest in
securities of a single issuer. As a non-diversified portfolio, each Portfolio
may invest a greater proportion of its assets in the obligations of a smaller
number of issuers and, as a result, may be subject to greater risk with respect
to portfolio securities. Each Portfolio's investments will be limited, however,
in order to qualify as a "regulated investment company" for purposes of the
Code. To qualify, the Portfolio will comply with certain requirements, including
limiting its investments so that at the close of each quarter of the taxable
year (i) not more than 25% of the market value of its total assets will be
invested in the securities of a single issuer, and (ii) with respect to 50% of
the market value of its total assets, not more than 5% of the market value of
its total assets will be invested in the securities of a single issuer and the
Portfolio will not own more than 10% of the outstanding voting securities of a
single issuer.

Investment Policies of the Emerging Markets Portfolio Only

               Stand-By Commitments (Emerging Markets Portfolio). The Emerging
Markets Portfolio may acquire "stand-by commitments" with respect to securities
held in its portfolio. Under a stand-by commitment, a dealer agrees to purchase
at the Portfolio's option specified securities at a specified price. The
Portfolio's right to exercise stand-by commitments is unconditional and
unqualified. Stand-by commitments acquired by the Portfolio may also be referred
to as "put" options. A stand-by commitment is not transferable by the Portfolio,
although the Portfolio can sell the underlying securities to a third party at
any time.

               The principal risk of stand-by commitments is that the writer of
a commitment may default on its obligation to repurchase the securities acquired
with it. When investing in stand-by commitments, the Portfolio will seek to
enter into stand-by commitments only




                                       34
<PAGE>   118


with brokers, dealers and banks that, in the opinion of Warburg, present minimal
credit risks. In evaluating the creditworthiness of the issuer of a stand-by
commitment, Warburg will periodically review relevant financial information
concerning the issuer's assets, liabilities and contingent claims.

               The amount payable to the Portfolio upon its exercise of a
stand-by commitment is normally (i) the Portfolio's acquisition cost of the
securities (excluding any accrued interest which the Portfolio paid on their
acquisition), less any amortized market premium or plus any amortized market or
original issue discount during the period the Portfolio owned the securities,
plus (ii) all interest accrued on the securities since the last interest payment
date during that period.

               The Portfolio expects that stand-by commitments will generally be
available without the payment of any direct or indirect consideration. However,
if necessary or advisable, the Portfolio may pay for a stand-by commitment
either separately in cash or by paying a higher price for portfolio securities
which are acquired subject to the commitment (thus reducing the yield to
maturity otherwise available for the same securities). The total amount paid in
either manner for outstanding stand-by commitments held in the Portfolio's
portfolio will not exceed 1/2 of 1 % of the value of the Portfolio's total
assets calculated immediately after each stand-by commitment is acquired.

               The Portfolio would acquire stand-by commitments solely to
facilitate portfolio liquidity and does not intend to exercise its rights
thereunder for trading purposes. The acquisition of a stand-by commitment would
not affect the valuation or assumed maturity of the underlying securities.
Stand-by commitments acquired by the Portfolio would be valued at zero in
determining net asset value. Where the Portfolio paid any consideration directly
or indirectly for a stand-by commitment, its cost would be reflected as
unrealized depreciation for the period during which the commitment was held by
the Portfolio. Stand-by commitments would not affect the average weighted
maturity of the Portfolio's portfolio.

               General. The Portfolio may invest in securities of companies of
any size, whether traded on or off a national securities exchange. Portfolio
holdings may include emerging growth companies, which are small- or medium-sized
companies that have passed their start-up phase and that show positive earnings
and prospects for achieving profit and gain in a relatively short period of
time.

               In appropriate circumstances, such as when a direct investment by
the Portfolio in the securities of a particular country cannot be made or when
the securities of an investment company are more liquid than the underlying
portfolio securities, the Portfolio may, consistent with the provisions of the
1940 Act, invest in the securities of closed-end investment companies that
invest in foreign securities. As a shareholder in a closed-end investment
company, the Portfolio will bear its ratable share of the investment company's
expenses, including management fees, and will remain subject to payment of the
Portfolio's administration fees and other expenses with respect to assets so
invested.



                                       35

<PAGE>   119




                             INVESTMENT RESTRICTIONS

               All Portfolios. Certain investment limitations may not be changed
without the affirmative vote of the holders of a majority of the relevant
Portfolio's outstanding shares ("Fundamental Restrictions"). Such majority is
defined as the lesser of (i) 67% or more of the shares present at the meeting,
if the holders of more than 50% of the outstanding shares of the Portfolio are
present or represented by proxy, or (ii) more than 50% of the outstanding
shares. If a percentage restriction (other than the percentage limitation set
forth in each No. 1 below) is adhered to at the time of an investment, a later
increase or decrease in the percentage of assets resulting from a change in the
values of portfolio securities or in the amount of the Portfolio's assets will
not constitute a violation of such restriction.

               International Equity Portfolio. The following investment
limitations numbered 1 through 12 are Fundamental Restrictions. Investment
limitations 13 through 14 may be changed by a vote of the Board at any time.

               The International Equity Portfolio may not:

               1. Borrow money or issue senior securities except that the
Portfolio may (a) borrow from banks for temporary or emergency purposes, and not
for leveraging, and then in amounts not in excess of 30% of the value of the
Portfolio's total assets at the time of such borrowing and (b) enter into
futures contracts; or mortgage, pledge or hypothecate any assets except in
connection with any bank borrowing and in amounts not in excess of the lesser of
the dollar amounts borrowed. Whenever borrowings described in (a) exceed 5% of
the value of the Portfolio's total assets, the Portfolio will not make any
investments (including roll-overs). For purposes of this restriction, (a) the
deposit of assets in escrow in connection with certain of the Portfolio's
investment strategies and (b) collateral arrangements with respect to initial or
variation margin for futures contracts will not be deemed to be pledges of the
Portfolio's assets.

               2. Purchase any securities which would cause 25% or more of the
value of the Portfolio's total assets at the time of purchase to be invested in
the securities of issuers conducting their principal business activities in the
same industry; provided that there shall be no limit on the purchase of U.S.
Government Securities.

               3. Make loans, except that the Portfolio may purchase or hold
publicly distributed fixed income securities, lend portfolio securities and
enter into repurchase agreements.

               4. Underwrite any issue of securities except to the extent that
the investment in restricted securities and the purchase of fixed income
securities directly from the issuer thereof in accordance with the Portfolio's
investment objective, policies and limitations may be deemed to be underwriting.

               5. Purchase or sell real estate, real estate investment trust
securities, commodities or commodity contracts, or invest in real estate limited
partnerships, oil, gas or




                                       36
<PAGE>   120


mineral exploration or development programs or oil, gas and mineral leases,
except that the Portfolio may invest in (a) securities secured by real estate,
mortgages or interests therein, (b) securities of companies that invest in or
sponsor oil, gas or mineral exploration or development programs and (c) futures
contracts and related options and commodity options. The entry into forward
foreign currency exchange contracts is not and shall not be deemed to involve
investing in commodities.

               6. Make short sales of securities or maintain a short position,
except that a Portfolio may maintain short positions in forward currency
contracts, options and futures contracts and make short sales "against the box."

               7. Purchase, write or sell puts, calls, straddles, spreads or
combinations thereof, except that the Portfolio may (a) purchase put and call
options on securities and foreign currencies, (b) write covered call options on
securities and (c) purchase or write options on futures contracts.

               8. Purchase securities of other investment companies except in
connection with a merger, consolidation, acquisition, reorganization or offer of
exchange, or as otherwise permitted under the 1940 Act.

               9. Purchase securities on margin, except that the Portfolio may
obtain any short-term credits necessary for the clearance of purchases and sales
of securities. For purposes of this restriction, the deposit or payment of
initial or variation margin in connection with futures contracts or related
options will not be deemed to be a purchase of securities on margin.

               10. Purchase the securities of any issuer if as a result more
than 5% of the value of the Portfolio's total assets would be invested in the
securities of such issuer, except that this 5% limitation does not apply to U.S.
Government Securities and except that up to 25% of the value of the Portfolio's
total assets may be invested without regard to this 5% limitation.

               11. Purchase any security if as a result the Portfolio would then
have more than 5% of its total assets invested in securities of companies
(including predecessors) that have been in continuous operation for fewer than
three years.

               12. Purchase more than 10% of the voting securities of any one
issuer; provided that this limitation shall not apply to investments in U.S.
Government Securities.

               13. Invest more than 10% of the value of the Portfolio's net
assets in securities which may be illiquid because of legal or contractual
restrictions on resale or securities for which there are no readily available
market quotations. For purposes of this limitation, (a) repurchase agreements
with maturities greater than seven days and (b) time deposits maturing in more
than seven calendar days shall be considered illiquid securities.

               14. Invest in oil, gas or mineral leases.



                                       37

<PAGE>   121




               Small Company Growth, Value and Emerging Markets Portfolios. The
following investment limitations numbered 1 through 9 are Fundamental
Restrictions. Investment limitations 10 through 13 may be changed by a vote of
the Board at any time.

               Each of the Small Company Growth, Value and Emerging Markets
Portfolios may not:

               1. Borrow money except that the Portfolios may (a) borrow from
banks for temporary or emergency purposes and (b) enter into reverse repurchase
agreements; provided that reverse repurchase agreements, dollar roll
transactions that are accounted for as financings and any other transactions
constituting borrowing by the Portfolios may not exceed 30% of the value of the
Portfolios' total assets at the time of such borrowing. For purposes of this
restriction, short sales, the entry into currency transactions, options, futures
contracts, options on futures contracts, forward commitment transactions and
dollar roll transactions that are not accounted for as financings (and the
segregation of assets in connection with any of the foregoing) shall not
constitute borrowing.

               2. Purchase any securities which would cause 25% or more of the
value of the Portfolios' total assets at the time of purchase to be invested in
the securities of issuers conducting their principal business activities in the
same industry; provided that there shall be no limit on the purchase of U.S.
Government Securities.

               3. Make loans, except that the Portfolios may purchase or hold
fixed-income securities, including loan participations, assignments and
structured securities, lend portfolio securities and enter into repurchase
agreements.

               4. Underwrite any securities issued by others except to the
extent that the investment in restricted securities and the sale of securities
in accordance with the Portfolios' investment objective, policies and
limitations may be deemed to be underwriting.

               5. Purchase or sell real estate or invest in oil, gas or mineral
exploration or development programs, except that the Portfolios may invest in
(a) securities secured by real estate, mortgages or interests therein and (b)
securities of companies that invest in or sponsor oil, gas or mineral
exploration or development programs.

               6. Make short sales of securities or maintain a short position,
except that the Portfolios may maintain short positions in forward currency
contracts, options, futures contracts and options on futures contracts and make
short sales "against the box".

               7. Purchase securities on margin, except that the Portfolios may
obtain any short-term credits necessary for the clearance of purchases and sales
of securities. For purposes of this restriction, the deposit or payment of
initial or variation margin in connection with transactions in currencies,
options, futures contracts or related options will not be deemed to be a
purchase of securities on margin.

               8. Invest in commodities, except that the Portfolios may purchase
and sell futures contracts, including those relating to securities, currencies
and indexes, and options on futures contracts, securities, currencies or
indexes, and purchase and sell currencies on a




                                       38
<PAGE>   122


forward commitment or delayed-delivery basis and, with respect to the Emerging
Markets Portfolio, enter into stand-by commitments.

               9. Issue any senior security except as permitted in the
Portfolios' investment limitations.

               10. Purchase securities of other investment companies except in
connection with a merger, consolidation, acquisition, reorganization or offer of
exchange, or as otherwise permitted under the 1940 Act.

               11. Pledge, mortgage or hypothecate its assets, except to the
extent necessary to secure permitted borrowings and to the extent related to the
deposit of assets in escrow and in connection with the purchase of securities on
a forward commitment or delayed-delivery basis and collateral and initial or
variation margin arrangements with respect to currency transactions, options,
futures contracts, and options on futures contracts and, with respect to the
Small Company Growth Portfolio and Value Portfolio, writing covered put and call
options.

               12. Invest more than 15% of each of the Value Portfolio's and the
Emerging Markets Portfolio's net assets and 10% of the Small Company Growth
Portfolio's net assets in securities which may be illiquid because of legal or
contractual restrictions on resale or securities for which there are no readily
available market quotations. For purposes of this limitation, repurchase
agreements with maturities greater than seven days shall be considered illiquid
securities.

               13. Make additional investments (including roll-overs) if the
Portfolios' borrowings exceed 5% of its net assets.

               Post-Venture Capital, Small Company Value and Japan Growth
Portfolios. The following investment limitations numbered 1 through 10 are
Fundamental Restrictions. Investment limitations 11 through 15 may be changed by
a vote of the Board at any time.

               Each of the Post-Venture Capital, Small Company Value and Japan
Growth Portfolios may not:

               1. Borrow money except that the Portfolios may (a) borrow from
banks for temporary or emergency purposes and (b) enter into reverse repurchase
agreements; provided that reverse repurchase agreements, dollar roll
transactions that are accounted for as financings and any other transactions
constituting borrowing by the Portfolios may not exceed 30% of the value of the
Portfolios' total assets at the time of such borrowing. For purposes of this
restriction, short sales, the entry into currency transactions, options, futures
contracts, options on futures contracts, forward commitment transactions and
dollar roll transactions that are not accounted for as financings (and the
segregation of assets in connection with any of the foregoing) shall not
constitute borrowing.

               2. Purchase any securities which would cause 25% or more of the
value of the Portfolios' total assets at the time of purchase to be invested in
the securities of issuers




                                       39
<PAGE>   123


conducting their principal business activities in the same industry; provided 
that there shall be no limit on the purchase of U.S. Government Securities.

               3. Make loans, except that the Portfolios may purchase or hold
fixed-income securities, including loan participations, assignments and
structured securities, lend portfolio securities and enter into repurchase
agreements.

               4. Underwrite any securities issued by others except to the
extent that the investment in restricted securities and the sale of securities
in accordance with the Portfolios' investment objective, policies and
limitations may be deemed to be underwriting.

               5. Purchase or sell real estate or invest in oil, gas or mineral
exploration or development programs, except that the Portfolios may invest in
(a) securities secured by real estate, mortgages or interests therein and (b)
securities of companies that invest in or sponsor oil, gas or mineral
exploration or development programs.

               6. With respect to the Small Company Value and Japan Growth
Portfolios only, make short sales of securities or maintain a short position,
except that each Portfolio may maintain short positions in forward currency
contracts, options, futures contracts and options on futures contracts and make
short sales "against the box."

               7. Purchase securities on margin, except that the Portfolios may
obtain any short-term credits necessary for the clearance of purchases and sales
of securities. For purposes of this restriction, the deposit or payment of
initial or variation margin in connection with transactions in currencies,
options, futures contracts or related options will not be deemed to be a
purchase of securities on margin.

               8. Invest in commodities, except that the Portfolios may purchase
and sell futures contracts, including those relating to securities, currencies
and indexes, and options on futures contracts, securities, currencies or
indexes, and purchase and sell currencies on a forward commitment or
delayed-delivery basis.

               9. Issue any senior security except as permitted in the
Portfolios' investment limitations.

               10. With respect to the Post-Venture Capital and Small Company
Value Portfolios only, purchase the securities of any issuer if as a result more
than 5% of the value of the Portfolio's total assets would be invested in the
securities of such issuer, except that this 5% limitation does not apply to U.S.
Government Securities and except that up to 25% of the value of the Portfolio's
total assets may be invested without regard to this 5% limitation.

               11. Purchase securities of other investment companies except in
connection with a merger, consolidation, acquisition, reorganization or offer of
exchange, or as otherwise permitted under the 1940 Act.

               12. Pledge, mortgage or hypothecate its assets, except to the
extent necessary to secure permitted borrowings and to the extent related to the
deposit of assets in escrow and in connection with the purchase of securities on
a forward commitment or delayed-



                                       40

<PAGE>   124


delivery basis and collateral and initial or variation margin arrangements with
respect to currency transactions, options, futures contracts, and options on
futures contracts.

               13. Invest more than 15% of each Portfolio's net assets in
securities which may be illiquid because of legal or contractual restrictions on
resale or securities for which there are no readily available market quotations.
For purposes of this limitation, repurchase agreements with maturities greater
than seven days shall be considered illiquid securities.

               14. Make additional investments (including roll-overs) if each
Portfolio's borrowings exceed 5% of its net assets.

               15. Invest in warrants (other than warrants acquired by the
Portfolio as part of a unit or attached to securities at the time of purchase)
if, as a result, the investments (valued at the lower of cost or market) would
exceed 10% of the value of the Portfolio's net assets.

                               PORTFOLIO VALUATION

               The following is a description of the procedures used by each
Portfolio in valuing its assets.

               Securities listed on a U.S. securities exchange (including
securities traded through the Nasdaq National Market System) or foreign
securities exchange or traded in an over-the-counter market will be valued at
the most recent sale as of the time the valuation is made or, in the absence of
sales, at the mean between the highest bid and lowest asked quotations. If there
are no such quotations, the value of the securities will be taken to be the most
recent bid quotation on the exchange or market. Options contracts will be valued
similarly. Futures contracts will be valued at the most recent settlement price
at the time of valuation. A security which is listed or traded on more than one
exchange is valued at the quotation on the exchange determined to be the primary
market for such security. Short-term obligations with maturities of 60 days or
less are valued at amortized cost, which constitutes fair value as determined by
the Board. Amortized cost involves valuing a portfolio instrument at its initial
cost and thereafter assuming a constant amortization to maturity of any discount
or premium, regardless of the impact of fluctuating interest rates on the market
value of the instrument. The amortized cost method of valuation may also be used
with respect to debt obligations with 60 days or less remaining to maturity.
Notwithstanding the foregoing, in determining the market value of portfolio
investments, the Portfolio may employ outside organizations (each, a "Pricing
Service") which may use a matrix formula or other objective method that takes
into consideration market indexes, matrices, yield curves and other specific
adjustments. The procedures of Pricing Services are reviewed periodically by the
officers of the Fund under the general supervision and responsibility of the
Board, which may replace a Pricing Service at any time. Securities, options,
futures contracts and other assets for which market quotations are not available
will be valued at their fair value as determined in good faith pursuant to
consistently applied procedures established by the Board. In addition, the Board
or its delegates may value a security at fair value if it determines that such
security's value determined by the methodology set forth above does not reflect
its fair value.




                                       41
<PAGE>   125



               Trading in securities in certain foreign countries is completed
at various times prior to the close of business on each business day in New York
(i.e., a day on which The New York Stock Exchange, Inc. (the "NYSE") is open for
trading). In addition, securities trading in a particular country or countries
may not take place on all business days in New York. Furthermore, trading takes
place in various foreign markets on days which are not business days in New York
and days on which a Portfolio's net asset value is not calculated. As a result,
calculation of the Portfolio's net asset value may not take place
contemporaneously with the determination of the prices of certain foreign
portfolio securities used in such calculation. All assets and liabilities
initially expressed in foreign currency values will be converted into U.S.
dollar values at the prevailing rate as quoted by a Pricing Service as of 12:00
noon (Eastern time). If such quotations are not available, the rate of exchange
will be determined in good faith pursuant to consistently applied procedures
established by the Board.

               Private Funds (Post-Venture Capital Portfolio). Private Funds are
initially valued at cost (i.e., the actual dollar amount invested). Thereafter,
Private Funds are valued at the prices set forth in periodic reports received by
Abbott from the Private Funds. These reports are generally made quarterly.
Neither Abbott nor the Portfolio will monitor interim changes in the value of
portfolio holdings of the Private Funds. As a result, these changes will not be
taken into account by the Portfolio in calculating its net asset value.

                             PORTFOLIO TRANSACTIONS

               Warburg is responsible for establishing, reviewing and, where
necessary, modifying each Portfolio's investment program to achieve its
investment objective. Purchases and sales of newly issued portfolio securities
are usually principal transactions without brokerage commissions effected
directly with the issuer or with an underwriter acting as principal. Other
purchases and sales may be effected on a securities exchange or
over-the-counter, depending on where it appears that the best price or execution
will be obtained. The purchase price paid by a Portfolio to underwriters of
newly issued securities usually includes a concession paid by the issuer to the
underwriter, and purchases of securities from dealers, acting as either
principals or agents in the after market, are normally executed at a price
between the bid and asked price, which includes a dealer's mark-up or mark-down.
Transactions on U.S. stock exchanges and some foreign stock exchanges involve
the payment of negotiated brokerage commissions. On exchanges on which
commissions are negotiated, the cost of transactions may vary among different
brokers. On most foreign exchanges, commissions are generally fixed. Purchases
of Private Funds by the Post-Venture Capital Portfolio through a broker or
placement agent may also involve a commission or other fee. There is generally
no stated commission in the case of securities traded in domestic or foreign
over-the-counter markets, but the price of securities traded in over-the-counter
markets includes an undisclosed commission or mark-up. U.S. Government
Securities are generally purchased from underwriters or dealers, although
certain newly issued U.S. Government Securities may be purchased directly from
the U.S. Treasury or from the issuing agency or instrumentality.

               Except for the Post-Venture Capital Portfolio's investments in
Private Funds, which will be managed by Abbott, Warburg will select specific
portfolio investments and effect transactions for each Portfolio and in doing so
seeks to obtain the overall best



                                       42

<PAGE>   126


execution of portfolio transactions. In evaluating prices and executions,
Warburg will consider the factors it deems relevant, which may include the
breadth of the market in the security, the price of the security, the financial
condition and execution capability of a broker or dealer and the reasonableness
of the commission, if any, for the specific transaction and on a continuing
basis. Warburg may, in its discretion, effect transactions in portfolio
securities with dealers who provide brokerage and research services (as those
terms are defined in Section 28(e) of the Securities Exchange Act of 1934) to a
Portfolio and/or other accounts over which Warburg exercises investment
discretion. Warburg may place portfolio transactions with a broker or dealer
with whom it has negotiated a commission that is in excess of the commission
another broker or dealer would have charged for effecting the transaction if
Warburg determines in good faith that such amount of commission was reasonable
in relation to the value of such brokerage and research services provided by
such broker or dealer viewed in terms of either that particular transaction or
of the overall responsibilities of Warburg. Research and other services received
due to brokerage business on behalf of the Portfolios may be useful to Warburg
in serving its other clients and, conversely, research or other services
obtained by the placement of business of other clients may be useful to Warburg
in carrying out its obligations to the Portfolios. Research may include
furnishing advice, either directly or through publications or writings, as to
the value of securities, the advisability of purchasing or selling specific
securities and the availability of securities or purchasers or sellers of
securities; furnishing seminars, information, analyses and reports concerning
issuers, industries, securities, trading markets and methods, legislative
developments, changes in accounting practices, economic factors and trends and
portfolio strategy; access to research analysts, corporate management personnel,
industry experts, economists and government officials; comparative performance
evaluation and technical measurement services and quotation services; and
products and other services (such as third party publications, reports and
analyses, and computer and electronic access, equipment, software, information
and accessories that deliver, process or otherwise utilize information,
including the research described above) that assist Warburg in carrying out its
responsibilities. For the fiscal year ended October 31, 1998, $30,744, $37,173,
$2,090, $484,734, $1,968 and $9,387 was paid by the Small Company Growth, Value,
Emerging Markets, International Equity, Post-Venture Capital and Small Company
Value Portfolios, respectively, to brokers and dealers who provided such
research and other services. Research received from brokers or dealers is
supplemental to Warburg's own research program. The fees to Warburg under its
agreements with each Portfolio are not reduced by reason of its receiving any
brokerage and research services.

               The Fund paid the following commissions to broker-dealers for
execution of portfolio transactions on behalf of the indicated Portfolios for
the indicated fiscal years ended October 31.



<TABLE>
<CAPTION>
                                   1998                      1997                      1996
<S>                             <C>                       <C>                        <C>        
Value                           $115,662                   $22,297                       N/A
Small Company Value              $27,058                         0                       N/A
Small Company Growth            $299,840                  $251,682                   $69,950
</TABLE>


                                       43

<PAGE>   127


<TABLE>
<CAPTION>
                                   1998                      1997                      1996
<S>                             <C>                       <C>                       <C>        

Post-Venture Capital                $3,314                         0                       N/A
International Equity            $6,610,396                $4,321,534                $1,273,733
Emerging Markets                  $294,677                  $289,393                   $90,762
Japan Growth                        $8,210                         0                       N/A
</TABLE>


               The table below shows the amount each of the following Portfolios
held, as of October 31, 1998, in securities of State Street Bank and Trust
Company, one of the regular broker-dealers of these Portfolios.


<TABLE>
<S>                                                 <C>       
Emerging Markets                                      $2,578,000
Small Company Growth                                 $10,795,000
Value                                                 $4,196,000
International Equity                                $118,376,000
Small Company Value                                     $165,000
</TABLE>

               Investment decisions for each Portfolio concerning specific
portfolio securities are made independently from those for other clients advised
by Warburg or Abbott, as relevant. Such other investment clients may invest in
the same securities as a Portfolio. When purchases or sales of the same security
are made at substantially the same time on behalf of such other clients,
transactions are averaged as to price and available investments allocated as to
amount, in a manner which Warburg or Abbott, as the case may be, believes to be
equitable to each client, including the Portfolios. In some instances, this
investment procedure may adversely affect the price paid or received by a
Portfolio or the size of the position obtained or sold for a Portfolio. To the
extent permitted by law, securities may be aggregated with those to be sold or
purchased for a Portfolio with those to be sold or purchased for such other
investment clients in order to obtain best execution.

               Any portfolio transaction for a Portfolio may be executed through
Counsellors Securities Inc. ("Counsellors Securities"), the Fund's distributor
and a wholly-owned subsidiary of Warburg, if, in Warburg's judgment, the use of
Counsellors Securities is likely to result in price and execution at least as
favorable as those of other qualified brokers, and if, in the transaction,
Counsellors Securities charges the Portfolio a commission rate consistent with
those charged by Counsellors Securities to comparable unaffiliated customers in
similar transactions. All transactions with affiliated brokers will comply with
Rule 17e-1 under the 1940 Act. No portfolio transactions have been executed
through Counsellors Securities since the commencement of each Portfolio's
operations.


                                       44


<PAGE>   128




               In no instance will portfolio securities be purchased from or
sold to Warburg, Abbott or Counsellors Securities, or any affiliated person of
such companies.

               Transactions for the Portfolios may be effected on foreign
securities exchanges. In transactions for securities not actively traded on a
foreign securities exchange, the Fund will deal directly with the dealers who
make a market in the securities involved, except in those circumstances where
better prices and execution are available elsewhere. Such dealers usually are
acting as principal for their own account. On occasion, securities may be
purchased directly from the issuer. Such portfolio securities are generally
traded on a net basis and do not normally involve brokerage commissions.
Securities firms may receive brokerage commissions on certain portfolio
transactions, including options, futures and options on futures transactions and
the purchase and sale of underlying securities upon exercise of options.

               Each Portfolio may participate, if and when practicable, in
bidding for the purchase of securities for the Portfolio's portfolio directly
from an issuer in order to take advantage of the lower purchase price available
to members of such a group. A Portfolio will engage in this practice, however,
only when Warburg, in its sole discretion, believes such practice to be
otherwise in the Portfolio's interest.

                               PORTFOLIO TURNOVER

               The Portfolios do not intend to seek profits through short-term
trading, but the rate of turnover will not be a limiting factor when a Portfolio
deems it desirable to sell or purchase securities. A Portfolio's portfolio
turnover rate is calculated by dividing the lesser of purchases or sales of its
portfolio securities for the year by the monthly average value of the portfolio
securities. Securities with remaining maturities of one year or less at the date
of acquisition are excluded from the calculation.

               Certain practices that may be employed by a Portfolio could
result in high portfolio turnover. For example, options on securities may be
sold in anticipation of a decline in the price of the underlying security
(market decline) or purchased in anticipation of a rise in the price of the
underlying security (market rise) and later sold. To the extent that its
portfolio is traded for the short-term, a Portfolio will be engaged essentially
in trading activities based on short-term considerations affecting the value of
an issuer's stock instead of long-term investments based on fundamental
valuation of securities. Because of this policy, portfolio securities may be
sold without regard to the length of time for which they have been held.
Consequently, the annual portfolio turnover rate of a Portfolio may be higher
than mutual funds having a similar objective that do not utilize these
strategies.

               It is not possible to predict the Portfolios' portfolio turnover
rates. High portfolio turnover rates (100% or more) may result in higher
brokerage commissions, dealer markups or underwriting commissions as well as
other transaction costs. In addition, gains realized from portfolio turnover may
be taxable to shareholders.

                             MANAGEMENT OF THE FUND

Officers and Board of Directors



                                       45

<PAGE>   129




               The business and affairs of the Fund are managed by the Board of
Directors in accordance with the laws of the State of Maryland. The Board elects
officers who are responsible for the day-to-day operations of the Fund and who
execute policies authorized by the Board. Under the Fund's Charter, the Board
may classify or reclassify any unissued shares of the Fund into one or more
additional classes by setting or changing in any one or more respects their
relative rights, voting powers, restrictions, limitations as to dividends,
qualifications and terms and conditions of redemption. The Board may similarly
classify or reclassify any class of its shares into one or more series and,
without shareholder approval, may increase the number of authorized shares of
the Fund.

               The names (and ages) of the Fund's Directors and officers, their
addresses, present positions and principal occupations during the past five
years and other affiliations are set forth below.

<TABLE>
<CAPTION>
<S>                                                  <C>                                       
Richard N. Cooper* (64)                              Director
Harvard University                                   Professor at Harvard University;  
1737 Cambridge Street                                National Intelligence Council from  
Cambridge, Massachusetts 02138                       June 1995 until January 1997; Director  
                                                     (retail electronics and appliances)and Phoenix 
                                                     or Trustee of CircuitCity Stores, Inc.                                        
                                                     Home Mutual Life Insurance Company;
                                                     Director/Trustee of other
                                                     investment companies in the
                                                     Warburg Pincus family of
                                                     funds.

Jack W. Fritz (71)                                   Director
2425 North Fish Creek Road                           Private investor; Consultant and Director 
P.O. Box 483                                         of Fritz Broadcasting, Inc. and Fritz 
Wilson, Wyoming 83014                                Communications (developers and operators of
                                                     radio stations); Director of Advo, Inc. (direct 
                                                     mail advertising);
                                                     Director/Trustee of other
                                                     investment companies in the
                                                     Warburg Pincus family of
                                                     funds.

John L. Furth* (68)                                  Chairman of the Board
466 Lexington Avenue                                 Chairman of the Board and Managing Director  
New York, New York 10017-3147                        of Warburg; Associated with Warburg since 1970. 
                                                     Chairman of the Board and officer of other 
                                                     investment companies advised by Warburg. Director/
                                                     Trustee of other investment companies in the 
                                                     Warburg Pincus family of funds.
</TABLE>

[FN]
* Indicates a Director who is an "interested person" of the Fund as defined in 
  the 1940 Act.
</FN>

                                       46
<PAGE>   130



<TABLE>
<S>                                                  <C>                                        
Jeffrey E. Garten (52)                               Director
Box 208200                                           Dean of Yale School of Management and 
New Haven, Connecticut 06520-8200                    William S. Beinecke Professor in the
                                                     Practice of International Trade and Finance; 
                                                     Undersecretary of Commerce
                                                     for International Trade
                                                     from November 1993 to
                                                     October 1995;
                                                     Director/Trustee of other
                                                     investment companies in the
                                                     Warburg Pincus family of
                                                     funds.

Thomas A. Melfe (67)                                 Director
1251 Avenue of the Americas                          Partner in the law firm of Piper & Marbury, 
29th Floor                                           L.L.P.; Partner in  the law firm of Donovan
New York, New York 10020-1104                        Leisure Newton & Irvine from April  1984  to 
                                                     April 1998; Chairman of the Board, 
                                                     Municipal Fund for New
                                                     York Investors, Inc.;
                                                     Director/Trustee of other
                                                     investment companies in the
                                                     Warburg Pincus family of
                                                     funds.

Arnold M. Reichman * (50)                            Director
466 Lexington Avenue                                 Managing Director, Chief Operating Officer and 
New York, New York 10017-3147                        Assistant Secretary of Warburg; Associated with 
                                                     Warburg since 1984; Officer of Counsellors
                                                     Securities;
                                                     Director/Trustee of other
                                                     investment companies in the
                                                     Warburg Pincus family of
                                                     funds.

Alexander B. Trowbridge (69)                         Director
1317 F Street, N.W., 5th Floor                       President of Trowbridge Partners, Inc. (business 
Washington, DC 20004                                 consulting) from January 1990 to November 1996; 
                                                     Director or Trustee of New England Mutual Life 
                                                     Insurance Co., ICOS Corporation (biopharmaceuticals), 
                                                     WMX Technologies Inc. (solid and hazardous waste 
                                                     collection and disposal), The Rouse Company  
                                                     (real estate development), Harris Corp. (electronics 
                                                     and communications equipment), The Gillette Co. 
                                                     (personal care products) and Sun Company Inc. (petroleum 
                                                     refining and marketing); Director/Trustee of other 
                                                     investment companies in the Warburg Pincus family of funds.


Eugene L. Podsiadlo (42)                             President
466 Lexington Avenue                                 Managing Director of Warburg; Associated with 
New York, New York 10017-3147                        Warburg since 1991; Officer of Counsellors Securities 
                                                     and of other investment companies in the Warburg Pincus 
                                                     family of funds.
</TABLE>



                                       47
<PAGE>   131



<TABLE>
<S>                                                  <C>                                                          
Steven B. Plump (40)                                 Executive Vice President
466 Lexington Avenue                                 Senior Vice President of Warburg; Associated 
New York, New York 10017-3147                        with Warburg since 1995; Associated with 
                                                     Chemical Investment Services and its
                                                     affiliates from 1993 until
                                                     1995. Officer of
                                                     Counsellors Securities and
                                                     other investment companies
                                                     in the Warburg Pincus
                                                     family of funds.

Stephen Distler (45)                                 Vice President
466 Lexington Avenue                                 Managing Director of Warburg; Associated 
New York, New York 10017-3147                        with Warburg since 1984; Officer of 
                                                     Counsellors Securities and of other investment 
                                                     companies in the Warburg Pincus family of funds.

Janna Manes, Esq. (31)                               Vice President and Secretary
466 Lexington Avenue                                 Vice President of Warburg; Associated with 
New York, New York 10017-3147                        Warburg since 1996; Associated with the law 
                                                     firm of Willkie Farr & Gallagher from 1993 to 
                                                     1996; Officer of other investment companies
                                                     in the Warburg Pincus
                                                     family of funds.

Howard Conroy, CPA (45)                              Vice President and Chief Financial Officer
466 Lexington Avenue                                 Vice President of Warburg; Associated with 
New York, New York 10017-3147                        Warburg since 1992; Officer of other investment
                                                     companies in the Warburg Pincus family of funds.

Daniel S. Madden, CPA (33)                           Treasurer and Chief Accounting Officer
466 Lexington Avenue                                 Vice President of Warburg; Associated with 
New York, New York 10017-3147                        Warburg since 1995; Associated with BlackRock 
                                                     Financial Management, Inc. from September 
                                                     1994 to October 1996; Associated with BEA
                                                     Associates from April 1993 to September 1994; Officer
                                                     of other investment companies in the Warburg
                                                     Pincus family of funds.

Stuart J. Cohen (30)                                 Assistant Secretary
466 Lexington Avenue                                 Vice President of Warburg; Associated with 
New York, New York 10017-3147                        Warburg since 1997; Associated with the law 
                                                     firm of Gordon Altman Butowsky Weitzed Shalov & 
                                                     Wein from 1995 to 1997; Officer of other
                                                     investment companies in the Warburg Pincus family of
                                                     funds.
</TABLE>

               No employee of Warburg, PFPC Inc., the Fund's co-administrator
("PFPC"), or any of their affiliates receives any compensation from the Fund for
acting as an officer or Director of the Fund. For each fund in the Warburg
Pincus family of funds, each Director/Trustee who is not a director, trustee,
officer or employee of Warburg, PFPC or any of their affiliates receives an
annual fee of $500, $1,000 or $2,000 per fund for


                                       48

<PAGE>   132


Director/Trustee services provided and $250 for each meeting attended in
addition to reimbursement for expenses incurred in connection with attendance at
Board meetings. Each member of the Audit Committee receives an annual fee of
$250, and the Chairman of the Audit Committee receives an annual fee of $325.

Directors' Compensation
(for the fiscal year ended October 31, 1998)

<TABLE>
<CAPTION>
                                           Total                   Total Compensation from
                                     Compensation from             all Investment Companies
     Name of Director                       Fund                      Managed by Warburg*
- -------------------------------   ---------------------------  --------------------------------
<S>                                        <C>                              <C>   
John L. Furth**                              None                              None
Arnold M. Reichman**                         None                              None
Richard N. Cooper                          $1,900                           $56,600
Donald J. Donohue***                        $ 475                           $13,525
Jack W. Fritz                              $2,150                           $63,100
Jeffrey E. Garten****                      $1,675                           $49,325
Thomas A. Melfe                            $2,150                           $60,700
Alexander B. Trowbridge                    $2,250                           $64,000
</TABLE>
[FN]
*        Each Director serves as a Director or Trustee of 39 investment
         companies in the Warburg Pincus family of funds, except for Mr. Melfe,
         who also serves as a Director or Trustee of 22 investment companies in
         the Warburg Pincus family of funds.

**       Mr. Furth and Mr. Reichman receive compensation as affiliates of 
         Warburg, and, accordingly, receive no compensation from the Fund or 
         any other investment company in the Warburg Pincus family of funds.

***      Mr. Donohue resigned as a Director of the Fund effective February 6, 
         1998.

****     Mr. Garten became a Director of the Fund effective February 6, 1998.
</FN>

               As of January 29, 1999, the Directors and officers of the Fund
as a group owned less than 1% of the outstanding shares of each Portfolio.

Portfolio Managers

               Post-Venture Capital Portfolio. Elizabeth B. Dater is
Co-Portfolio Manager of the Post-Venture Capital Portfolio and manages other
Warburg Pincus Funds. Prior to joining Warburg in 1978, she was a vice president
of Research at Fiduciary Trust Company of New York and an institutional sales
assistant at Lehman Brothers. Ms. Dater has been a regular panelist on Maryland
Public Television's Wall Street Week with Louis Rukeyser since 1976. Ms. Dater
earned a B.A. degree from Boston University in Massachusetts.

               Stephen J. Lurito is Co-Portfolio Manager of the Post-Venture
Capital Portfolio and manages other Warburg Pincus Funds. Mr. Lurito has been
with Warburg since 1987. Prior to that he was a research analyst at Sanford C.
Bernstein & Company, Inc. Mr. Lurito earned a B.A. degree from the University of
Virginia and a M.B.A. from the University of Pennsylvania.



                                       49

<PAGE>   133


               Robert S. Janis and Christopher M. Nawn are Associate Portfolio
Managers of the Post-Venture Portfolio and of other Warburg Pincus Funds. Prior
to joining Warburg in October 1994, Mr. Janis was a vice president and senior
research analyst at U.S. Trust Company of New York. He earned B.A. and M.B.A.
degrees from the University of Pennsylvania. Prior to joining Warburg in
September 1994, Mr. Nawn was a senior sector analyst and portfolio manager at
the Dreyfus Corporation. He earned a B.A. degree from the Colorado College and
an M.B.A. degree from the University of Texas.

               Raymond L. Held and Thaddeus I. Gray, Investment Managers and
Managing Directors of Abbott, manage the Post-Venture Capital Portfolio's
investments in Private Funds. Abbott also acts as sub-investment adviser for
other Warburg Pincus Funds. Prior to co-founding a predecessor of Abbott in
1986, Mr. Held had been an investment analyst and portfolio manager at
Manufacturers Hanover Investment Corporation since 1970, before which time he
had been a security analyst with Weis, Voisin, Cannon, Inc., L.M. Rosenthal &
Co., Shearson, Hammill & Co. and Standard & Poor's Corporation. Mr. Held earned
an M.B.A. from New York University, an M.A. from Columbia University and a B.A.
from Queens College.

               Prior to joining a predecessor of Abbott in 1989, Mr. Gray was an
assistant vice president at Commerzbank Capital Markets Corporation, where he
managed the area responsible for underwriting and distributing all new issues of
securities. Prior to this, he was an associate with Credit Commercial de France
in Paris in the Corporate Finance Department. Mr. Gray received his B.A. in
History from the University of Pennsylvania and his M.B.A. in Finance from New
York University. He is also a Chartered Financial Analyst.

               Small Company Growth Portfolio. Ms. Dater and Mr. Lurito are also
Co-Portfolio Managers of the Small Company Growth Portfolio (see biographies
above).

               Small Company Value Portfolio. Kyle F. Frey is the Portfolio
Manager of the Small Company Value Portfolio and is a Managing Director of
Warburg. Prior to joining Warburg in 1989, Mr. Frey was with Goldman, Sachs &
Co. in the institutional sales division. Mr. Frey earned a B.S. degree from the
University of New Hampshire and an M.B.A. from New York University.

               Value Portfolio. Brian S. Posner is the Portfolio Manager of the
Value Portfolio and manages other Warburg Pincus Funds. Prior to joining
Warburg, Mr. Posner was employed from 1987 to 1996 by Fidelity Investments,
where, most recently, he was the vice president and portfolio manager of the
Fidelity Equity-Income II Fund. Mr. Posner received an undergraduate degree from
Northwestern University and his M.B.A. in Finance from the University of
Chicago.

               International Equity Portfolio. Richard H. King is Co-Portfolio
Manager of the International Equity Portfolio and manages other Warburg Pincus
Funds. He resided in the Far East as an investment analyst from 1970 to 1977,
became director, and later relocated to the U.S. where he became founder and
president of W.I. Carr (America), based in New York. From 1982 to 1984 Mr. King
was a director in charge of the Far East equity



                                       50

<PAGE>   134


investments at N.M. Rothschild International Asset Management, a London 
merchant bank. In 1984 Mr. King became chief investment officer and
director for all international investment strategy with Fiduciary Trust Company
International S.A., in London. He managed an EAFE mutual fund (FTIT) 1985-1986
which grew from $3 million to over $100 million during this two-year period. Mr.
King earned a B.A. degree from Durham University in England.

               P. Nicholas Edwards is Co-Portfolio Manager of the International
Equity Portfolio and serves in similar positions with other Warburg Pincus
Funds. Prior to joining Warburg in August 1995, Mr. Edwards was a director at
Jardine Fleming Investment Advisers, Tokyo. He was a vice president of Robert
Fleming Inc. in New York City from 1988 to 1991. Mr. Edwards earned M.A. degrees
from Oxford University and Hiroshima University in Japan.

               Harold W. Ehrlich is Co-Portfolio Manager of the International
Equity Portfolio and serves in similar positions with other Warburg Pincus
Funds. Prior to joining Warburg in 1995, Mr. Ehrlich was a senior vice
president, portfolio manager and analyst at Templeton Investment Counsel Inc.
from 1987 to 1995. He was a research analyst and assistant portfolio manager at
Fundamental Management Corporation from 1985 to 1986 and a research analyst at
First Equity Corporation of Florida from 1983 to 1985. Mr. Ehrlich earned a
B.S.B.A. degree from University of Florida and earned his Chartered Financial
Analyst designation in 1990.

               Vincent J. McBride is Co-Portfolio Manager of the International
Equity Portfolio and serves in similar positions with other Warburg Pincus
Funds. Prior to joining Warburg in 1994, Mr. McBride was an international equity
analyst at Smith Barney Inc. from 1993 to 1994 and at General Electric
Investment Corporation from 1992 to 1993. He was also a portfolio
manager/analyst at United Jersey Bank from 1989 to 1992 and a portfolio manager
at First Fidelity Bank from 1987 to 1989. Mr. McBride earned a B.S. degree from
the University of Delaware and an M.B.A. degree from Rutgers University.

               Harold E. Sharon is Co-Portfolio Manager of the International
Equity Portfolio and serves in similar positions with other Warburg Pincus
Funds. Prior to joining Warburg in 1998, Mr. Sharon was an executive director
and portfolio manager at CIBC Oppenheimer from 1994 to 1998. Mr. Sharon was
previously a Vice President and Portfolio Manager at Warburg from 1990 to 1994.
Mr. Sharon earned a B.S. Degree with honors from the University of Rochester and
an M.S. degree in Management from the Sloan School of Management, M.I.T.

               Emerging Markets Portfolio. Mr. King and Mr. McBride are also
Co-Portfolio Managers of the Emerging Markets Portfolio (see biographies above).

               Mr. Morid Kamshad is an Associate Portfolio Manager of the
Emerging Markets Portfolio and serves in similar positions with other Warburg
Pincus Funds. Prior to joining Warburg in 1997, he was a senior investment
manager with Pictet Asset Management from 1995 to 1997. Mr. Morid was also an
investment analyst with HSBC Asset Management from 1994 to 1995 and a business
development manager with Air Products and Chemicals - France from 1989 to 1994.




                                       51
<PAGE>   135




               Mr. Jun Sung Kim is an Associate Portfolio Manager of the
Emerging Markets Portfolio and serves in similar positions with other Warburg
Pincus Funds. Prior to joining Warburg in 1997, he was an investment manager
with Asset Korea Ltd., Seoul from 1994 to 1995. He was also an assistant
investment manager with Koeneman Capital Management, Singapore from 1992 to
1994.

               Japan Growth Portfolio. Mr. Edwards also serves as Portfolio
Manager of the Japan Growth Portfolio (see biography above).

Investment Advisers and Co-Administrators

               Warburg serves as investment adviser to each Portfolio, Abbott
serves as sub-investment adviser to the Post-Venture Capital Portfolio,
Counsellors Funds Service, Inc. ("Counsellors Service") and PFPC serve as
co-administrators to the Fund pursuant to separate written agreements (the
"Advisory Agreements," the "Sub-Investment Advisory Agreement," the "Counsellors
Service Co-Administration Agreements" and the "PFPC Co-Administration
Agreements," respectively). Warburg, subject to the control of the Fund's
officers and the Board, manages the investment and reinvestment of the assets of
the Portfolios in accordance with each Portfolio's investment objective and
stated investment policies. Warburg makes investment decisions for each
Portfolio and places orders to purchase or sell securities on behalf of the
Portfolio and, with respect to the Post-Venture Capital Portfolio, supervises
the activities of Abbott. Warburg also employs a support staff of management
personnel to provide services to the Fund and furnishes the Fund with office
space, furnishings and equipment. Abbott, in accordance with the investment
objective and policies of the Post-Venture Capital Portfolio, makes investment
decisions for the Portfolio regarding investments in Private Funds, effects
transactions in Private Funds on behalf of the Portfolio and assists in other
administrative functions relating to investments in Private Funds.

               For the services provided by Warburg, the Fund pays Warburg a fee
calculated at an annual rate equal to percentages of the relevant Portfolio's
average daily net assets, as follows: Small Company Growth Portfolio -- .90%,
Small Company Value Portfolio -- .90%, Value Portfolio -- .75%, Emerging Markets
Portfolio -- 1.00%, International Equity Portfolio -- .80%, and Japan Growth
Portfolio -- 1.10%. For the services provided by Warburg, the Post-Venture
Capital Portfolio pays Warburg a fee calculated at an annual rate of 1.10% of
the Portfolio's average daily net assets, out of which Warburg pays Abbott for
sub-investment advisory services. Warburg and the Portfolios' co-administrators
may voluntarily waive a portion of their fees from time to time and temporarily
limit the expenses to be borne by the Portfolios.

               Warburg earned the following investment advisory fees with
respect to the Portfolios shown for the indicated fiscal years ended October 31
and voluntarily waived the amounts shown.



                                       52

<PAGE>   136




<TABLE>
<CAPTION>
                               1998*            Waiver            1997+           Waiver             1996          Waiver
<S>                         <C>              <C>               <C>               <C>             <C>             <C>             
Post-Venture Capital           $17,840          $17,840               N/A              N/A              N/A             N/A
Small Company Growth        $2,012,526         $396,698        $1,405,403          $314,893        $268,768        $122,453
Small Company Value            $55,629          $52,149               N/A              N/A              N/A             N/A
Value                         $382,122         $196,905           $22,250           $22,250             N/A             N/A
Emerging Markets              $314,334          $13,496          $376,368          $103,632         $21,487         $21,487
International Equity        $9,511,718       $1,511,306        $9,423,008        $1,627,352      $5,644,429      $1,182,795
Japan Growth                   $15,596          $14,514               N/A              N/A              N/A             N/A
</TABLE>

[FN]
+    Warburg reimbursed expenses in the amount of $24,195 to the Value
     Portfolio during the fiscal year ended October 31, 1997.

*    Warburg reimbursed expenses in the amount of $48,425, $43,388,
     $553 and $47,843 for the Post-Venture Capital Portfolio, Small
     Company Value Portfolio, Value Portfolio and Japan Growth
     Portfolio, respectively, during the fiscal year ended October 31,
     1998.
</FN>

               As co-administrator, Counsellors Service provides shareholder
liaison services to the Portfolios, including responding to shareholder
inquiries and providing information on shareholder investments. Counsellors
Service also performs a variety of other services, including furnishing certain
executive and administrative services, acting as liaison between each Portfolio
and its various service providers, furnishing corporate secretarial services,
which include preparing materials for meetings of the Board, preparing proxy
statements and annual and semiannual reports, assisting in the preparation of
tax returns and developing and monitoring compliance procedures for the
Portfolios. As compensation, each Portfolio pays Counsellors Service a fee
calculated at an annual rate of .10% of the Portfolio's average daily net
assets.

               Counsellors Service earned the following administration fees with
respect to the Portfolios shown for the indicated fiscal years ended October 31.

<TABLE>
<CAPTION>
                                      1998                1997                1996
<S>                                <C>                  <C>                 <C>                                              
Post-Venture Capital                 $1,622                  N/A                N/A
Small Company Growth               $223,614             $156,156            $29,863
</TABLE>


                                       53
<PAGE>   137


<TABLE>
<CAPTION>
                                      1998                1997                1996
<S>                              <C>                  <C>                 <C>                                              
Small Company Value                  $6,181                  N/A                N/A
Value                               $50,950               $2,967                N/A
Emerging Markets                    $31,433              $37,637             $2,149
International Equity             $1,188,965           $1,177,876           $705,554
Japan Growth                         $1,414                  N/A                N/A
</TABLE>

               As a co-administrator, PFPC calculates each Portfolio's net asset
value, provides all accounting services for the Portfolios and assists in
related aspects of the Portfolios' operations. As compensation, each U.S.
Portfolio pays PFPC a fee calculated at an annual rate of .10% of the
Portfolio's first $500 million in average daily net assets, .075% of the next $1
billion in average daily net assets, and .05% of average daily net assets over
$1.5 billion. The International Portfolios each pays PFPC a fee calculated at an
annual rate of .12% of the Portfolio's first $250 million in average daily net
assets, .10% of the next $250 million in average daily net assets, .08% of the
next $250 million in average daily net assets, and .05% of average daily net
assets over $750 million. PFPC has its principal offices at 400 Bellevue
Parkway, Wilmington, Delaware 19809.

               PFPC earned the following administration fees with respect to the
Portfolios shown for the indicated fiscal years ended October 31 and voluntarily
waived the amounts shown.

<TABLE>
<CAPTION>
                                 1998             Waiver          1997         Waiver          1996           Waiver
<S>                           <C>                <C>           <C>             <C>            <C>            <C>                 
Post-Venture Capital            $3,150            $1,622            N/A            N/A             N/A            N/A
Small Company Growth          $229,049                $0       $156,156              0         $29,863         $9,901
Small Company Value             $7,923            $6,181            N/A            N/A             N/A            N/A
Value                          $56,058           $27,867         $2,966         $2,966             N/A            N/A
Emerging Markets               $48,970           $37,720        $45,164        $45,164          $2,578         $2,578
International Equity          $995,886                $0       $963,938              0        $702,540       $119,850
</TABLE>


                                       54
<PAGE>   138


<TABLE>
<CAPTION>
                                 1998             Waiver          1997          Waiver          1996         Waiver
<S>                           <C>                <C>             <C>            <C>             <C>          <C>                
Japan Growth                  $4,474             $1,701            N/A            N/A            N/A           N/A
</TABLE>


Custodians and Transfer Agent

               Pursuant to separate custodian agreements (the "Custodian
Agreements"), PNC Bank, National Association ("PNC") and State Street Bank and
Trust Company ("State Street") serve as custodians of the each Portfolio's U.S.
and non-U.S. assets, respectively. Under the Custodian Agreements, PNC and State
Street each (i) maintains a separate account or accounts in the name of the
Portfolio, (ii) holds and transfers portfolio securities for the account of the
Portfolio, (iii) makes receipts and disbursements of money on behalf of the
Portfolio, (iv) collects and receives all income and other payments and
distributions on account of the Portfolio's portfolio securities held by it and
(v) makes periodic reports to the Board concerning the Portfolio's custodial
arrangements. PNC may delegate its duties under its Custodian Agreement with the
Fund to a wholly owned direct or indirect subsidiary of PNC or PNC Bank Corp.
upon notice to the Fund and upon the satisfaction of certain other conditions.
State Street is authorized to select one or more foreign banking institutions
and foreign securities depositaries as sub-custodian on behalf of the
Portfolios. PNC is an indirect, wholly owned subsidiary of PNC Bank Corp., and
its principal business address is 200 Stevens Drive, Suite 440, Lester,
Pennsylvania 19113. The principal business address of State Street is 225
Franklin Street, Boston, Massachusetts 02110.

               PNC also provides certain custodial services generally in
connection with purchases and sales of the International Equity Portfolio's
shares.

               State Street also serves as the shareholder servicing, transfer
and dividend disbursing agent of the Fund pursuant to a Transfer Agency and
Service Agreement, under which State Street (i) issues and redeems shares of
each Portfolio, (ii) addresses and mails all communications by the Fund to
record owners of Portfolio shares, including reports to shareholders, dividend
and distribution notices and proxy material for its meetings of shareholders,
(iii) maintains shareholder accounts and, if requested, sub-accounts and (iv)
makes periodic reports to the Board concerning the transfer agent's operations
with respect to the Fund. State Street has delegated to Boston Financial Data
Services, Inc., an affiliate of State Street ("BFDS"), responsibility for most
shareholder servicing functions. BFDS's principal business address is 2 Heritage
Drive, Boston, Massachusetts 02171.

Distributor

               Counsellors Securities, a wholly owned subsidiary of Warburg,
acts as the distributor of the Portfolios. Counsellors Securities' principal
business address is 466 Lexington Avenue, New York, New York 10017.

Organization of the Fund

               The Fund was incorporated on May 13, 1992 under the laws of the
State of Maryland under the name "Warburg, Pincus Institutional Fund, Inc." The
Fund's charter



                                       55

<PAGE>   139


authorizes the Board of Directors to issue thirteen billion full and fractional
shares of capital stock, par value $.001 per share. Shares of nine series have
been classified, seven of which constitute the interests in the Portfolios.

               The Post-Venture Capital, Small Company Value, Value and
International Equity Portfolios are diversified, open-end management investment
companies. The Small Company Growth, Emerging Markets and Japan Growth
Portfolios are non-diversified, open-end management investment companies.

               All shareholders of a Portfolio, upon liquidation, will
participate ratably in the Portfolio's net assets. Shares do not have cumulative
voting rights, which means that holders of more than 50% of the shares voting
for the election of Directors can elect all Directors. Shares are transferable
but have no preemptive, conversion or subscription rights.

                 ADDITIONAL PURCHASE AND REDEMPTION INFORMATION

               The offering price of each Portfolio's shares is equal to its per
share net asset value. Under the 1940 Act, a Portfolio may suspend the right of
redemption or postpone the date of payment upon redemption for any period during
which the NYSE is closed, other than customary weekend and holiday closings, or
during which trading on the NYSE is restricted, or during which (as determined
by the SEC) an emergency exists as a result of which disposal or fair valuation
of portfolio securities is not reasonably practicable, or for such other periods
as the SEC may permit. (A Portfolio may also suspend or postpone the recordation
of an exchange of its shares upon the occurrence of any of the foregoing
conditions.)

               If conditions exist which make payment of redemption proceeds
wholly in cash unwise or undesirable, a Portfolio may make payment wholly or
partly in securities or other investment instruments which may not constitute
securities as such term is defined in the applicable securities laws. If a
redemption is paid wholly or partly in securities or other property, a
shareholder would incur transaction costs in disposing of the redemption
proceeds. The Fund intends to comply with Rule 18f-1 promulgated under the 1940
Act with respect to redemptions in kind.

               A Portfolio may, in certain circumstances and in its discretion,
accept securities as payment for the purchase of the Portfolio's shares from an
investor who has received such securities as redemption proceeds from another
Warburg Pincus Fund.

                               EXCHANGE PRIVILEGE

               Shareholders of a Portfolio may exchange all or part of their
shares for shares of another Portfolio or other portfolios of the Fund organized
by Warburg in the future on the basis of their relative net asset values per
share at the time of exchange. The exchange privilege enables shareholders to
acquire shares in a Portfolio with a different investment objective when they
believe that a shift between Portfolios is an appropriate investment decision.

               If an exchange request is received by Warburg Pincus Funds or its
agent prior to the close of regular trading on the NYSE, the exchange will be
made at each Portfolio's net asset value determined at the end of that business
day. Exchanges will be effected without a




                                       56
<PAGE>   140


sales charge but must satisfy the minimum dollar amount necessary for new
purchases. A Portfolio may refuse exchange purchases at any time without notice.

               The exchange privilege is available to investors in any state in
which the shares being acquired may be legally sold. When an investor effects an
exchange of shares, the exchange is treated for federal income tax purposes as a
redemption. Therefore, the investor may realize a taxable gain or loss in
connection with the exchange. Investors wishing to exchange shares of a
Portfolio for shares in another portfolio of the Fund should review the
Prospectus of the other portfolio prior to making an exchange. For further
information regarding the exchange privilege or to obtain a current Prospectus
for another portfolio of the Fund, an investor should contact the Fund at
1-800-222-8977.

               Each Portfolio reserves the right to refuse exchange purchases by
any person or group if, in Warburg's judgment, a Portfolio would be unable to
invest the money effectively in accordance with its investment objective and
policies, or would otherwise potentially be adversely affected. Examples of when
an exchange purchase could be refused are when a Portfolio receives or
anticipates receiving large exchange orders at or about the same time and when a
pattern of exchanges within a short period of time (often associated with a
marketing timing strategy) is discerned. The Portfolios reserve the right to
terminate or modify the exchange privilege at any time upon 30 days' notice to
shareholders.

                     ADDITIONAL INFORMATION CONCERNING TAXES

               The following is a summary of the material United States federal
income tax considerations regarding the purchase, ownership and disposition of
shares in the Portfolios. Each prospective shareholder is urged to consult his
own tax adviser with respect to the specific federal, state, local and foreign
tax consequences of investing in the Portfolios. The summary is based on the
laws in effect on the date of this Statement of Additional Information, which
are subject to change.

The Portfolios and Their Investments

               Each Portfolio intends to continue to qualify to be treated as a
regulated investment company each taxable year under the Code. To so qualify, a
Portfolio must, among other things: (a) derive at least 90% of its gross income
in each taxable year from dividends, interest, payments with respect to
securities loans and gains from the sale or other disposition of stock or
securities or foreign currencies, or other income (including, but not limited
to, gains from options, futures or forward contracts) derived with respect to
its business of investing in such stock, securities or currencies; and (b)
diversify its holdings so that, at the end of each quarter of the Portfolio's
taxable year, (i) at least 50% of the market value of the Portfolio's assets is
represented by cash, securities of other regulated investment companies, United
States government securities and other securities, with such other securities
limited, in respect of any one issuer, to an amount not greater than 5% of the
Portfolio's assets and not greater than 10% of the outstanding voting securities
of such issuer and (ii) not more than 25% of the value of its assets is invested
in the securities (other than United States government securities or securities
of other regulated investment companies) of any one issuer or any two or more
issuers that the Portfolio controls and are determined to be engaged in the same
or similar trades or businesses or related trades or businesses. Each Portfolio
expects




                                       57
<PAGE>   141


that all of its foreign currency gains will be directly related to its principal
business of investing in stocks and securities.

               As a regulated investment company, a Portfolio will not be
subject to United States federal income tax on its net investment income (i.e.,
income other than its net realized long- and short-term capital gains) and its
net realized long- and short-term capital gains, if any, that it distributes to
its shareholders, provided that an amount equal to at least 90% of the sum of
its investment company taxable income (i.e., 90% of its taxable income minus the
excess, if any, of its net realized long-term capital gains over its net
realized short-term capital losses (including any capital loss carryovers), plus
or minus certain other adjustments as specified in the Code) is distributed, but
will be subject to tax at regular corporate rates on any taxable income or gains
that it does not distribute. Any dividend declared by a Portfolio in October,
November or December of any calendar year and payable to shareholders of record
on a specified date in such a month shall be deemed to have been received by
each shareholder on December 31 of such calendar year and to have been paid by
the Portfolio not later than such December 31, provided that such dividend is
actually paid by the Portfolio during January of the following calendar year.

               Each Portfolio intends to distribute annually to its shareholders
substantially all of its investment company taxable income. The Board will
determine annually whether to distribute any net realized long-term capital
gains in excess of net realized short-term capital losses (including any capital
loss carryovers). Each Portfolio currently expects to distribute any excess
annually to its shareholders. However, if a Portfolio retains for investment an
amount equal to all or a portion of its net long-term capital gains in excess of
its net short-term capital losses and capital loss carryovers, it will be
subject to a corporate tax (currently at a rate of 35%) on the amount retained.
In that event, the Portfolio will designate such retained amounts as
undistributed capital gains in a notice to its shareholders who (a) will be
required to include in income for United Stares federal income tax purposes, as
long-term capital gains, their proportionate shares of the undistributed amount,
(b) will be entitled to credit their proportionate shares of the 35% tax paid by
the Portfolio on the undistributed amount against their United States federal
income tax liabilities, if any, and to claim refunds to the extent their credits
exceed their liabilities, if any, and (c) will be entitled to increase their tax
basis, for United States federal income tax purposes, in their shares by an
amount equal to 65% of the amount of undistributed capital gains included in the
shareholder's income. Organizations or persons not subject to federal income tax
on such capital gains will be entitled to a refund of their pro rata share of
such taxes paid by the Portfolio upon filing appropriate returns or claims for
refund with the Internal Revenue Service (the "IRS").

               The Code imposes a 4% nondeductible excise tax on each Portfolio
to the extent the Portfolio does not distribute by the end of any calendar year
at least 98% of its net investment income for that year and 98% of the net
amount of its capital gains (both long-and short-term) for the one-year period
ending, as a general rule, on October 31 of that year. For this purpose,
however, any income or gain retained by the Portfolio that is subject to
corporate income tax will be considered to have been distributed by year-end. In
addition, the minimum amounts that must be distributed in any year to avoid the
excise tax will be increased or decreased to reflect any underdistribution or
overdistribution, as the case may be, from the



                                       58

<PAGE>   142


previous year. Each Portfolio anticipates that it will pay such dividends and
will make such distributions as are necessary in order to avoid the application
of this tax.

               If, in any taxable year, a Portfolio fails to qualify as a
regulated investment company under the Code or fails to meet the distribution
requirement, it would be taxed in the same manner as an ordinary corporation and
distributions to its shareholders would not be deductible by the Portfolio in
computing its taxable income. In addition, in the event of a failure to qualify,
the Portfolio's distributions, to the extent derived from the Portfolio's
current or accumulated earnings and profits would constitute dividends (eligible
for the corporate dividends-received deduction) which are taxable to
shareholders as ordinary income, even though those distributions might otherwise
(at least in part) have been treated in the shareholders' hands as long-term
capital gains. If a Portfolio fails to qualify as a regulated investment company
in any year, it must pay out its earnings and profits accumulated in that year
in order to qualify again as a regulated investment company. In addition, if a
Portfolio failed to qualify as a regulated investment company for a period
greater than one taxable year, the Portfolio may be required to recognize any
net built-in gains (the excess of the aggregate gains, including items of
income, over aggregate losses that would have been realized if it had been
liquidated) in order to qualify as a regulated investment company in a
subsequent year.

               A Portfolio's short sales against the box, if any, and
transactions in foreign currencies, forward contracts, options and futures
contracts (including options and futures contracts on foreign currencies) will
be subject to special provisions of the Code that, among other things, may
affect the character of gains and losses realized by the Portfolio (i.e., may
affect whether gains or losses are ordinary or capital), accelerate recognition
of income to the Portfolio and defer Portfolio losses. These rules could
therefore affect the character, amount and timing of distributions to
shareholders. These provisions also (a) will require the Portfolio to
mark-to-market certain types of the positions in its portfolio (i.e., treat them
as if they were closed out) and (b) may cause the Portfolio to recognize income
without receiving cash with which to pay dividends or make distributions in
amounts necessary to satisfy the distribution requirements for avoiding income
and excise taxes. Each Portfolio will monitor its transactions, will make the
appropriate tax elections and will make the appropriate entries in its books and
records when it engages in a short sale against-the-box or acquires any foreign
currency, forward contract, option, futures contract or hedged investment in
order to mitigate the effect of these rules and prevent disqualification of the
Portfolio as a regulated investment company.

               A Portfolio's investments in zero coupon securities may create
special tax consequences. Zero coupon securities do not make interest payments,
although a portion of the difference between zero coupon security's face value
and its purchase price is imputed as income to the Portfolio each year even
though the Portfolio receives no cash distribution until maturity. Under the
U.S. federal tax laws, the Portfolio will not be subject to tax on this income
if it pays dividends to its shareholders substantially equal to all the income
received from, or imputed with respect to, its investments during the year,
including its zero coupon securities. These dividends ordinarily will constitute
taxable income to the shareholders of the Portfolio.

Passive Foreign Investment Companies.




                                       59
<PAGE>   143




               If a Portfolio purchases shares in certain foreign investment
entities, called "passive foreign investment companies" (a "PFIC"), it may be
subject to United States federal income tax on a portion of any "excess
distribution" or gain from the disposition of such shares even if such income is
distributed as a taxable dividend by the Portfolio to its shareholders.
Additional charges in the nature of interest may be imposed on the Portfolio in
respect of deferred taxes arising from such distributions or gains. If a
Portfolio were to invest in a PFIC and elected to treat the PFIC as a "qualified
electing fund" under the Code, in lieu of the foregoing requirements, the
Portfolio might be required to include in income each year a portion of the
ordinary earnings and net capital gains of the qualified electing fund, even if
not distributed to the Portfolio, and such amounts would be subject to the 90%
and excise tax distribution requirements described above. In order to make this
election, the Portfolio would be required to obtain certain annual information
from the passive foreign investment companies in which it invests, which may be
difficult or not possible to obtain. If a Portfolio were able to make the
election described in this paragraph, the Portfolio would not be able to treat
any portion of the long-term capital gains included in income pursuant to the
election as eligible for the 20% maximum capital gains rate.

               Alternatively, a Portfolio may make mark-to-market elections that
will result in a Portfolio being treated as if it had sold and repurchased all
of the PFIC stock at the end of each year. In this case, the Portfolio would
report gains as ordinary income and would deduct losses as ordinary losses to
the extent of previously recognized gains. The election, once made, would be
effective for all subsequent taxable years of the Portfolio, unless revoked with
the consent of the IRS. By making the election, the Portfolio could potentially
ameliorate the adverse tax consequences with respect to its ownership of shares
in a PFIC, but in any particular year may be required to recognize income in
excess of the distributions it receives from PFICs and its proceeds from
dispositions of PFIC company stock. A Portfolio may have to distribute this
"phantom" income and gain to satisfy its distribution requirement and to avoid
imposition of the 4% excise tax. Each Portfolio will make the appropriate tax
elections, if possible, and take any additional steps that are necessary to
mitigate the effect of these rules.

Dividends and Distributions.

               Dividends of net investment income and distributions of net
realized short-term capital gains are taxable to a United States shareholder as
ordinary income, whether paid in cash or in shares. Distributions of
net-long-term capital gains, if any, that a Portfolio designates as capital
gains dividends are taxable as long-term capital gains, whether paid in cash or
in shares and regardless of how long a shareholder has held shares of the
Portfolio. Dividends and distributions paid by a Portfolio (except for the
portion thereof, if any, attributable to dividends on stock of U.S. corporations
received by the Portfolio) will not qualify for the deduction for dividends
received by corporations. Distributions in excess of a Portfolio's current and
accumulated earnings and profits will, as to each shareholder, be treated as a
tax-free return of capital, to the extent of a shareholder's basis in his shares
of the Portfolio, and as a capital gain thereafter (if the shareholder holds his
shares of the Portfolio as capital assets).

               Shareholders receiving dividends or distributions in the form of
additional shares should be treated for United States federal income tax
purposes as receiving a distribution in the amount equal to the amount of money
that the shareholders receiving cash




                                       60
<PAGE>   144


dividends or distributions will receive, and should have a cost basis in the
shares received equal to such amount.

               Investors considering buying shares just prior to a dividend or
capital gain distribution should be aware that, although the price of shares
just purchased at that time may reflect the amount of the forthcoming
distribution, such dividend or distribution may nevertheless be taxable to them.

               If a Portfolio is the holder of record of any stock on the record
date for any dividends payable with respect to such stock, such dividends are
included in the Portfolio's gross income not as of the date received but as of
the later of (a) the date such stock became ex-dividend with respect to such
dividends (i.e., the date on which a buyer of the stock would not be entitled to
receive the declared, but unpaid, dividends) or (b) the date the Portfolio
acquired such stock. Accordingly, in order to satisfy its income distribution
requirements, the Portfolio may be required to pay dividends based on
anticipated earnings, and shareholders may receive dividends in an earlier year
than would otherwise be the case.

Sales of Shares.

               Upon the sale or exchange of his shares, a shareholder will
realize a taxable gain or loss equal to the difference between the amount
realized and his basis in his shares. Such gain or loss will be treated as
capital gain or loss, if the shares are capital assets in the shareholder's
hands, and will be long-term capital gain or loss if the shares are held for
more than one year and short-term capital gain or loss if the shares are held
for one year or less. Any loss realized on a sale or exchange will be disallowed
to the extent the shares disposed of are replaced, including replacement through
the reinvesting of dividends and capital gains distributions in a Portfolio,
within a 61-day period beginning 30 days before and ending 30 days after the
disposition of the shares. In such a case, the basis of the shares acquired will
be increased to reflect the disallowed loss. Any loss realized by a shareholder
on the sale of a Portfolio share held by the shareholder for six months or less
will be treated for United States federal income tax purposes as a long-term
capital loss to the extent of any distributions or deemed distributions of
long-term capital gains received by the shareholder with respect to such share.

Foreign Taxes.

               Income received by a Portfolio from non-U.S. sources may be
subject to withholding and other taxes imposed by other countries. A Portfolio
may elect for U.S. income tax purposes to treat foreign income taxes paid by it
as paid by its shareholders if: (i) the Portfolio qualifies as a regulated
investment company, (ii) certain asset and distribution requirements are
satisfied, and (iii) more than 50% of the Portfolio's total assets at the close
of its fiscal year consists of stock or securities of foreign corporations. A
Portfolio may qualify for and make this election (the "Foreign Tax Credit
Election") in some, but not necessarily all, of its taxable years. If a
Portfolio were to make an election, shareholders of the Portfolio would be
required to take into account an amount equal to their pro rata portions of such
foreign taxes in computing their taxable income and then treat an amount equal
to those foreign taxes as a U.S. federal income tax deduction or as a foreign
tax credit against their U.S. federal income taxes. Shortly after any year for
which it makes such an election, a




                                       61

<PAGE>   145


Portfolio will report to its shareholders the amount per share of such foreign
income tax that must be included in each shareholder's gross income and the
amount which will be available for the deduction or credit. No deduction for
foreign taxes may be claimed by a shareholder who does not itemize deductions.
Certain limitations will be imposed on the extent to which the credit (but not
the deduction) for foreign taxes may be claimed.

               It is expected that the Portfolios other than the Emerging
Markets, International Equity and the Japan Growth Portfolios will not be
eligible to make the Foreign Tax Credit Election. In the absence of such an
election, the foreign taxes paid by a portfolio will reduce its investment
company taxable income, and distributions of investment company taxable income
received by the Portfolio from non-U.S. sources will be treated as United States
source income when distributed to shareholders.

               In the opinion of Japanese counsel for the Fund, the operations
of the Japan Growth Portfolio will not subject the Portfolio to any Japanese
income, capital gains or other taxes except for withholding taxes on interest
and dividends paid to the Portfolio by Japanese corporations and securities
transaction taxes payable in the event of sales of portfolio securities in
Japan. In the opinion of such counsel, under the tax convention between the
United States and Japan (the "Convention") as currently in force, a Japanese
withholding tax at a rate of 15% is, within certain exceptions, imposed upon
dividends paid by Japanese corporations to the Portfolio. Pursuant to the
present terms of the Convention, interest received by the Portfolio from sources
within Japan is subject to a Japanese withholding tax at a rate of 10%.

Backup Withholding.

               A Portfolio may be required to withhold, for United States
federal income tax purposes, 31% of the dividends and distributions payable to
shareholders who fail to provide the Portfolio with their correct taxpayer
identification number or to make required certifications, or who have been
notified by the IRS that they are subject to backup withholding. Certain
shareholders are exempt from backup withholding. Backup withholding is not an
additional tax and any amount withheld may be credited against a shareholder's
United States federal income tax liabilities.

Notices.

               Shareholders will be notified annually by the relevant Portfolio
as to the United States federal income tax status of the dividends,
distributions and deemed distributions attributable to undistributed capital
gains (discussed above in "The Portfolios and Their Investments") made by the
Portfolio to its shareholders. Furthermore, shareholders will also receive, if
appropriate, various written notices after the close of the Portfolio's taxable
year regarding the United States federal income tax status of certain dividends,
distributions and deemed distributions that were paid (or that are treated as
having been paid) by the Portfolio to its shareholders during the preceding
taxable year.

Other Taxation

               Distributions also may be subject to additional state, local and
foreign taxes depending on each shareholder's particular situation.



                                       62

<PAGE>   146




THE FOREGOING IS ONLY A SUMMARY OF CERTAIN MATERIAL TAX CONSEQUENCES AFFECTING 
THE PORTFOLIOS AND THEIR SHAREHOLDERS. SHAREHOLDERS ARE ADVISED TO CONSULT 
THEIR OWN TAX ADVISERS WITH RESPECT TO THE PARTICULAR TAX CONSEQUENCES TO THEM 
OF AN INVESTMENT IN THE PORTFOLIOS.


                          DETERMINATION OF PERFORMANCE

               From time to time, a Portfolio may quote its total return in
advertisements or in reports and other communications to shareholders. The total
return of each Portfolio listed below for the fiscal periods ended October 31,
1998 were as follows (performance figures calculated without waiver of fees by
the Fund's service provider(s), if any, are noted in italics):

<TABLE>
<CAPTION>
 PORTFOLIO (INCEPTION DATE)                     ONE-YEAR                    FIVE-YEARS                SINCE INCEPTION
 --------------------------                     --------                    ----------                ---------------
<S>                                     <C>             <C>              <C>          <C>         <C>            <C>     
Post-Venture Capital (10/31/97)         (17.70)%        (22.50)%          N/A          N/A        (17.70)%       (22.50)%

Small Company Growth (12/29/95)         (18.88)%        (19.07)%          N/A          N/A          9.34%          9.13%

Small Company Value (10/31/97)          (20.20)%        (24.70)%          N/A          N/A        (20.20)%       (24.70)%

Value (6/30/97)                           9.76%           9.22%           N/A          N/A         12.28%         11.60%

Emerging Markets (9/30/96)              (32.90)%        (33.06)%          N/A          N/A        (19.71)%       (20.04)%

International Equity (9/1/92)            (4.11)%         (4.27)%         6.03%        5.85%        10.25%         10.04%

Japan Growth Portfolio+ (10/31/97)       (7.84)%        (12.07)%          N/A          N/A         (7.84)%       (12.07)%
</TABLE>
[FN]
+        Not annualized.
</FN>

               These total return figures show the average percentage change in
value of an investment in a Portfolio from the beginning of the measurement
period to the end of the measurement period. The figures reflect changes in the
price of the Portfolio's shares assuming that any income dividends and/or
capital gain distributions made by the Portfolio during the period were
reinvested in shares of the Portfolio. Total return will be shown for recent
one-, five- and ten-year periods, and may be shown for other periods as well
(such as

                                       63

<PAGE>   147


from commencement of the Portfolio's operations or on a year-by-year, quarterly
or current year-to-date basis).

               A Portfolio's average annualized total return is calculated by
finding the average annual compounded rates of return for the one-, five- and
ten- (or such shorter period as the Portfolio has been offered) year periods
that would equate the initial amount invested to the ending redeemable value
according to the following formula: P (1 + T)n = ERV. For purposes of this
formula, "P" is a hypothetical investment of $1,000; "T" is average annual total
return; "n" is number of years; and "ERV" is the ending redeemable value of a
hypothetical $1,000 payment made at the beginning of the one-, five- or ten-year
periods (or fractional portion thereof). Total return or "T" is computed by
finding the average annual change in the value of an initial $1,000 investment
over the period and assumes that all dividends and distributions are reinvested
during the period.

               When considering average total return figures for periods longer
than one year, it is important to note that the annual total return for one year
in the period might have been greater or less than the average for the entire
period. When considering total return figures for periods shorter than one year,
investors should bear in mind that such return may not be representative of any
Portfolio's return over a longer market cycle. A Portfolio may also advertise
aggregate total return figures for various periods, representing the cumulative
change in value of an investment in the relevant Portfolio for the specific
period. Aggregate and average total returns may be shown by means of schedules,
charts or graphs, and may indicate various components of total return (i.e.,
change in value of initial investment, income dividends and capital gain
distributions).

               A Portfolio may advertise, from time to time, comparisons of its
performance with that of one or more other mutual funds with similar investment
objectives. A Portfolio may advertise average annual calendar-year-to-date and
calendar quarter returns, which are calculated according to the formula set
forth in the preceding paragraph except that the relevant measuring period would
be the number of months that have elapsed in the current calendar year or most
recent three months, as the case may be. Investors should note that this
performance may not be representative of the Portfolio's total return in longer
market cycles.

               A Portfolio's performance will vary from time to time depending
upon market conditions, the composition of its portfolio and operating expenses
allocable to it. As described above, total return is based on historical
earnings and is not intended to indicate future performance. Consequently, any
given performance quotation should not be considered as representative of
performance for any specified period in the future. Performance information may
be useful as a basis for comparison with other investment alternatives. However,
a Portfolio's performance will fluctuate, unlike certain bank deposits or other
investments which pay a fixed yield for a stated period of time.

               A Portfolio may compare its performance with (i) that of other
mutual funds with similar investment objectives and policies, which may be based
on the rankings prepared by Lipper Analytical Services, Inc. or similar
investment services that monitor the performance of mutual funds; (ii) in the
case of the Post-Venture Capital Portfolio, with the Nasdaq Industrials Index
and appropriate indexes prepared by Frank Russell Company relating to securities
represented in the Portfolio, which are unmanaged indexes of common


                                       64

<PAGE>   148


stocks; in the case of the Small Company Growth Portfolio, with appropriate
indexes prepared by Frank Russell Company relating to securities represented in
the Portfolio; in the case of the Small Company Value Portfolio, with
appropriate indexes prepared by Frank Russell Company relating to securities
represented in the Portfolio, which are unmanaged indexes; in the case of the
Value Portfolio, with appropriate indexes prepared by Frank Russell Company
relating to securities represented in the Portfolio; in the case of the Emerging
Markets Portfolio, with the Morgan Stanley Capital International Emerging
Markets Free Index; in the case of the International Equity Portfolio, the
Morgan Stanley Capital International All Country World Excluding U.S. Index
and/or other indexes prepared by Morgan Stanley relating to securities
represented in the Portfolio; and in the case of the Japan Growth Portfolio, the
Topix Index, which is an unmanaged index of common stocks; or (iii) other
appropriate indexes of investment securities or with data developed by Warburg
derived from such indexes. A Portfolio may also include evaluations of the
Portfolio published by nationally recognized ranking services and by financial
publications such as Barron's, Business Week, Financial Times, Forbes, Fortune,
Inc., Institutional Investor, Investor's Business Daily, Money, Morningstar,
Mutual Fund Magazine, SmartMoney, The Wall Street Journal and Worth.
Morningstar, Inc. rates funds in broad categories based on risk/reward analyses
over various time periods. In addition, each Portfolio may from time to time
compare its expense ratio to that of investment companies with similar
objectives and policies, based on data generated by Lipper Analytical Services,
Inc. or similar investment services that monitor mutual funds.

               In reports or other communications to investors or in
advertising, each Portfolio may also describe the general biography or work
experience of the portfolio managers of the Portfolio and may include quotations
attributable to the portfolio managers describing approaches taken in managing
the Portfolio's investments, research methodology underlying stock selection or
the Portfolio's investment objective. In addition, a Portfolio and its portfolio
managers may render updates of Portfolio activity, which may include a
discussion of significant portfolio holdings; analysis of holdings by industry,
country, credit quality and other characteristics; and comparison and analysis
of the Portfolio with respect to relevant market and industry benchmarks. The
Post-Venture Capital Portfolio may discuss characteristics of venture capital
financed companies and the benefits expected to be achieved from investing in
these companies. Each Portfolio may also discuss measures of risk, the continuum
of risk and return relating to different investments and the potential impact of
foreign stocks on a portfolio otherwise composed of domestic securities.

               Warburg believes that a diversified portfolio of international
equity securities, when combined with a similarly diversified portfolio of
domestic equity securities, tends to have a lower volatility than a portfolio
composed entirely of domestic securities. Furthermore, international equities
have been shown to reduce volatility in single asset portfolios regardless of
whether the investments are in all domestic equities or all domestic
fixed-income instruments, and research indicates that volatility can be
significantly decreased when international equities are added.

               To illustrate this point, the performance of international equity
securities, as measured by the Morgan Stanley Capital International Europe,
Australasia, Far East (EAFE(R)) Index (the "EAFE Index"), has equaled or
exceeded that of domestic equity securities, as measured by the Standard &
Poor's 500 Composite Stock Index (the "S&P 500 Index") in 14



                                       65

<PAGE>   149


of the last 26 years. The following table compares annual total returns of the
EAFE Index and the S&P 500 Index for the calendar years shown.

                          EAFE INDEX VS. S&P 500 INDEX
                                    1972-1998
                              ANNUAL TOTAL RETURN+

<TABLE>
<CAPTION>
    YEAR                     EAFE INDEX                  S&P 500 INDEX
    <S>                        <C>                         <C>                           
    1972*                       33.28                       15.63
    1973*                      -16.82                      -17.37
    1974*                      -25.60                      -29.72
    1975*                       31.21                       31.55
    1976                         -.36                       19.15
    1977*                       14.61                      -11.50
    1978*                       28.91                        1.06
    1979                         1.82                       12.31
    1980                        19.01                       25.77
    1981*                       -4.85                       -9.73
    1982                        -4.63                       14.76
    1983*                       20.91                       17.27
    1984*                        5.02                        1.40
    1985*                       52.97                       26.33
    1986*                       66.80                       14.62
    1987*                       23.18                        2.03
    1989                         9.22                       27.25
    1990                       -24.71                       -6.56
    1991                        10.19                       26.31
    1992                       -13.89                        4.46
    1993*                       30.49                        7.06
    1994*                        6.24                       -1.54
    1995                         9.42                       34.11
    1996                         4.40                       20.26
    1997                         0.24                       31.01
    1998                        18.29                       26.23
</TABLE>
- -------------------------
[FN]
+        Without reinvestment of dividends.

*        The EAFE Index has outperformed the S&P 500 Index 14 out of the last 
         26 years.
</FN>

Source:  Morgan Stanley Capital International; Bloomberg Financial Markets

               The quoted performance information shown above is not intended to
indicate the future performance of the International Equity or Emerging Markets
Portfolios. Advertising or supplemental sales literature relating to a Portfolio
may describe the percentage decline from all-time high levels for certain
foreign stock markets. It may also describe how the Portfolio differs from the
EAFE Index in composition.

                       INDEPENDENT ACCOUNTANTS AND COUNSEL

               PricewaterhouseCoopers LLP ("PwC"), with principal offices at
2400 Eleven Penn Center, Philadelphia, Pennsylvania 19103, serves as independent
accountants for the


                                       66

<PAGE>   150


 Fund. The financial statements for the Portfolios that are incorporated by
reference in this Statement of Additional Information have been audited by PwC,
and have been included herein by reference in reliance upon the report of such
firm of independent accountants given upon their authority as experts in
accounting and auditing.

               Willkie Farr & Gallagher serves as counsel for the Fund as well
as counsel to Warburg, Counsellors Service and Counsellors Securities.

                                  MISCELLANEOUS

               As of November 30, 1998, the names, addresses and percentage
ownership of each person that owned 5% or more of the outstanding shares of a
Portfolio are as follows:

<TABLE>
<CAPTION>
     Portfolio                      Name and Address                        Percentage Owned
<S>                         <C>                                                  <C>   
Post-Venture Capital        Warburg Pincus Asset Management, Inc.                 71.59%
                            Attn: Stephen Distler
                            466 Lexington Avenue, 10th Floor
                            New York, NY  10017-3140

                            Guarantee & Trust Co. TTEE                             8.92%
                            Stuart Goode IRA R/O
                            70 E 77th St. Apt. 9A
                            New York, NY  10021-1811

Small Company Growth        MAC & Co                                              12.38%
                            A/C BUCF 1831132
                            Mutual Funds Operations
                            P.O. Box 3198
                            Pittsburgh, PA  15230-3198

                            Trustees of Amherst College                           11.36%
                            Amherst College, Ms. Sharon Siegel
                            Treasurer Office
                            Box 2203 P.O. Box 5000
                            Amherst, MA 01002-5000

                            MAC & Co                                               6.43%
                            FBO Oberlin College
                            Mutual Fund Operations
                            P.O. Box 3198
                            Pittsburgh, PA 15230-3198

                            Northern Trust Co TTEE*                                5.60%
                            FBO Southern California
                            Rock Products C/O Mutual Funds
                            P.O. Box 92956
                            Chicago, IL 60675
</TABLE>



                                       67

<PAGE>   151


<TABLE>
<CAPTION>
     Portfolio                     Name and Address                          Percentage Owned
<S>                         <C>                                                   <C>   
                            National City Bank of KY TTEE                          5.22%
                            Baptist Healthcare System
                            UAD 05/06/97
                            Attn: Trust Mutual Funds
                            P.O. Box 94777
                            Cleveland, OH  44101-4777

Small Company Value         The American Numismatic Society                       40.03%
                            155th Street Broadway
                            New York, NY  10032

                            Wendel & Co. A/C 510105                                8.79%
                            C/O The Bank of New York
                            Mutual Fund/Reorg Dept.
                            P.O. Box 1066 Wall Street Station
                            New York, NY  10268-1066

                            Newman-Stein Profit Sharing Plan                       7.60%
                            C/O Mr. William Stein
                            Newman-Stein Inc.
                            902 Broadway
                            New York, NY  10010-6002

                            Guarantee & Trust Co. TTEE                             6.32%
                            Stuart Goode IRA R/O
                            70 E. 77th St. Apt.9A
                            New York, NY  10021-1811

Value                       National Financial Services Corp.*                    77.81%
                            FBO Customers
                            P.O. Box 3908
                            Church Street Station
                            New York, NY 10008-3908

                            Mandel Associated Foundations                         14.00%
                            1750 Euclid Avenue
                            Cleveland, OH  44115-2106

                            Foundations Investments of Ohio                        6.28%
                            P.O. Box 6609
                            Cleveland, OH  44101-1609

Emerging Markets            Louis R. Morrell/Irene A. Comito Co-Trustee           78.18%
                            Wake Forest University Trust
                            U/A DTD 6/25/41
                            P.O. Box 7354
                            Winston-Salem, NC 27109-7354

                            The Juilliard School                                   7.83%
                            60 Lincoln Center Plaza
                            New York, NY 10023-6588
</TABLE>



                                       68
<PAGE>   152



<TABLE>
<CAPTION>
     Portfolio                        Name and Address                      Percentage Owned
<S>                         <C>                                                   <C>   
Japan Growth                Warburg Pincus Asset Management, Inc.                 92.71%
                            Attn: Stephen Distler
                            466 Lexington Avenue, 10th Floor
                            New York, NY  10017-3140
</TABLE>

[FN]
*    Each Portfolio believes these entities are not the beneficial owners of 
     shares held of record by them.
</FN>

               As of November 30, 1998, Mr. Lionel I. Pincus, the Chief
Executive Officer of Warburg, may be deemed to have beneficially owned 18.57%,
7.47%, 94.95%, 22.00%, 5.39%, 5.66% and 6.03% of the outstanding shares of the
Post-Venture Capital, Small Company Growth, Small Company Value, Value, Emerging
Markets, International Equity and Japan Growth Portfolios, respectively,
including shares owned by clients for which Warburg has investment discretion
and by companies that Warburg Pincus & Co. may be deemed to control. Mr. Pincus
disclaims ownership of these shares and does not intend to exercise voting
rights with respect to these shares.

                              FINANCIAL STATEMENTS

               The Fund's audited Annual Report dated October 31, 1998, which
either accompanies this Statement of Additional Information or has previously
been provided to the investor to whom this Statement of Additional Information
is being sent, is incorporated herein by reference with respect to all
information regarding the Portfolios included therein. The Fund will furnish
without charge a copy of the Annual Report upon request by calling the Fund at
1-800-222-8977.


                                       69
<PAGE>   153


                                    APPENDIX

                             DESCRIPTION OF RATINGS

Commercial Paper Ratings

               Commercial paper rated A-1 by Standard and Poor's Ratings
Services ("S&P") indicates that the degree of safety regarding timely payment is
strong. Those issues determined to possess extremely strong safety
characteristics are denoted a plus sign designation. Capacity for timely payment
on commercial paper rated A-2 is satisfactory, but the relative degree of safety
is not as high as for issues designated A-1.

               The rating Prime-1 is the highest commercial paper rating
assigned by Moody's Investors Service, Inc. ("Moody's"). Issuers rated Prime-1
(or related supporting institutions) are considered to have a superior capacity
for repayment of short-term promissory obligations. Issuers rated Prime-2 (or
related supporting institutions) are considered to have a strong capacity for
repayment of short-term promissory obligations. This will normally be evidenced
by many of the characteristics of issuers rated Prime-1 but to a lesser degree.
Earnings trends and coverage ratios, while sound, will be more subject to
variation. Capitalization characteristics, while still appropriate, may be more
affected by external conditions. Ample alternative liquidity is maintained.

Corporate Bond Ratings

               The following summarizes the ratings used by S&P for corporate
bonds:

               AAA - This is the highest rating assigned by S&P to a debt
obligation and indicates an extremely strong capacity to pay interest and repay
principal.

               AA - Debt rated AA has a very strong capacity to pay interest and
repay principal and differs from AAA issues only in small degree.

               A - Debt rated A has a strong capacity to pay interest and repay
principal although they are somewhat more susceptible to the adverse effects of
changes in circumstances and economic conditions than debt in higher-rated
categories.

               BBB - This is the lowest investment grade. Debt rated BBB has an
adequate capacity to pay interest and repay principal. Although they normally
exhibit adequate protection parameters, adverse economic conditions or changing
circumstances are more likely to lead to a weakened capacity to pay interest and
repay principal for bonds in this category than for bonds in higher rated
categories.

               BB, B, CCC, CC and C - Debt rated BB and B is regarded, on
balance, as predominately speculative with respect to capacity to pay interest
and repay principal in accordance with the terms of the obligation. BB
represents a lower degree of speculation than B, and CCC the highest degree of
speculation. While such bonds will likely have some quality




                                      A-1
<PAGE>   154


and protective characteristics, these are outweighed by large uncertainties or
major risk exposures to adverse conditions.

               BB - Debt rated BB has less near-term vulnerability to default
than other speculative issues. However, it faces major ongoing uncertainties or
exposure to adverse business, financial, or economic conditions, which could
lead to inadequate capacity to meet timely interest and principal payments. The
BB rating category is also used for debt subordinated to senior debt that is
assigned an actual or implied BBB rating.

               B - Debt rated B has a greater vulnerability to default but
currently has the capacity to meet interest payments and principal repayments.
Adverse business, financial, or economic conditions will likely impair capacity
or willingness to pay interest and repay principal. The B rating category is
also used for debt subordinated to senior debt that is assigned an actual or
implied BB or BBB rating.

               CCC - Debt rated CCC has a currently identifiable vulnerability
to default and is dependent upon favorable business, financial and economic
conditions to meet timely payment of interest and repayment of principal. In the
event of adverse business, financial or economic conditions, it is not likely to
have the capacity to pay interest and repay principal. The CCC rating category
is also used for debt subordinated to senior debt that is assigned an actual or
implied B or B- rating.

               CC - This rating is typically applied to debt subordinated to
senior debt that is assigned an actual or implied CCC rating.

               C - This rating is typically applied to debt subordinated to
senior debt which is assigned an actual or implied CCC- debt rating. The C
rating may be used to cover a situation where a bankruptcy petition has been
filed, but debt service payments are continued.

               Additionally, the rating CI is reserved for income bonds on which
no interest is being paid. Such debt is rated between debt rated C and debt
rated D.

               To provide more detailed indications of credit quality, the
ratings may be modified by the addition of a plus or minus sign to show relative
standing within this major rating category.

               D - Debt rated D is in payment default. The D rating category is
used when interest payments or principal payments are not made on the date due
even if the applicable grace period has not expired, unless S&P believes that
such payments will be made during such grace period. The D rating also will be
used upon the filing of a bankruptcy petition if debt service payments are
jeopardized.

               The following summarizes the ratings used by Moody's for
corporate bonds:

               Aaa - Bonds that are rated Aaa are judged to be of the best
quality. They carry the smallest degree of investment risk and are generally
referred to as "gilt edge." Interest



                                      A-2
<PAGE>   155


payments are protected by a large or exceptionally stable margin and principal
is secure. While the various protective elements are likely to change, such
changes as can be visualized are most unlikely to impair the fundamentally
strong position of such issues.

               Aa - Bonds that are rated Aa are judged to be of high quality by
all standards. Together with the Aaa group they comprise what are generally
known as high-grade bonds. They are rated lower than the best bonds because
margins of protection may not be as large as in Aaa securities or fluctuation of
protective elements may be of greater amplitude or there may be other elements
present which make the long-term risks appear somewhat larger than in Aaa
securities.

               A - Bonds which are rated A possess many favorable investment
attributes and are to be considered as upper medium-grade obligations. Factors
giving security to principal and interest are considered adequate, but elements
may be present which suggest a susceptibility to impairment sometime in the
future.

               Baa - Bonds which are rated Baa are considered as medium-grade
obligations, i.e., they are neither highly protected nor poorly secured.
Interest payments and principal security appear adequate for the present but
certain protective elements may be lacking or may be characteristically
unreliable over any great length of time. Such bonds lack outstanding investment
characteristics and in fact have speculative characteristics as well.

               Ba - Bonds which are rated Ba are judged to have speculative
elements; their future cannot be considered as well assured. Often the
protection of interest and principal payments may be very moderate and thereby
not well safeguarded during both good and bad times over the future. Uncertainty
of position characterizes bonds in this class.

               B - Bonds which are rated B generally lack characteristics of the
desirable investments. Assurance of interest and principal payments or of
maintenance of other terms of the contract over any long period of time may be
small.

               Moody's applies numerical modifiers (1, 2 and 3) with respect to
the bonds rated "Aa" through "B". The modifier 1 indicates that the bond being
rated ranks in the higher end of its generic rating category; the modifier 2
indicates a mid-range ranking; and the modifier 3 indicates that the bond ranks
in the lower end of its generic rating category.

               Caa - Bonds that are rated Caa are of poor standing. These issues
may be in default or present elements of danger may exist with respect to
principal or interest.

               Ca - Bonds which are rated Ca represent obligations which are
speculative in a high degree. Such issues are often in default or have other
marked shortcomings.

               C - Bonds which are rated C comprise the lowest rated class of
bonds, and issues so rated can be regarded as having extremely poor prospects of
ever attaining any real investment standing.




                                      A-3






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